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evolution.xml: Update for 4.4 and 4.5 releases. 

2010-01-05  Benjamin Kosnik  <bkoz@redhat.com>

	* doc/xml/manual/evolution.xml: Update for 4.4 and 4.5 releases.
	* doc/html: Regenerate.

From-SVN: r155661
parent 43d4b97d
Showing with 335 additions and 319 deletions
libstdc++-v3/ChangeLog
2010-01-05 Benjamin Kosnik <bkoz@redhat.com>
* doc/xml/manual/evolution.xml: Update for 4.4 and 4.5 releases.
* doc/html: Regenerate.
2010-01-05 Paolo Carlini <paolo.carlini@oracle.com>
PR libstdc++/38081
......
libstdc++-v3/doc/html/api.html
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>API and Source Level Documentation</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><link rel="home" href="spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="bk02.html" title="" /><link rel="prev" href="bk02.html" title="" /><link rel="next" href="bk03.html" title="" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">API and Source Level Documentation</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk02.html">Prev</a> </td><th width="60%" align="center"></th><td width="20%" align="right"> <a accesskey="n" href="bk03.html">Next</a></td></tr></table><hr /></div><div class="article" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="api"></a>API and Source Level Documentation</h2></div><div><p class="copyright">Copyright ©
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>API and Source Level Documentation</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="bk02.html" title="" /><link rel="prev" href="bk02.html" title="" /><link rel="next" href="bk03.html" title="" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">API and Source Level Documentation</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk02.html">Prev</a> </td><th width="60%" align="center"></th><td width="20%" align="right"> <a accesskey="n" href="bk03.html">Next</a></td></tr></table><hr /></div><div class="article" title="API and Source Level Documentation"><div class="titlepage"><div><div><h2 class="title"><a id="api"></a>API and Source Level Documentation</h2></div><div><p class="copyright">Copyright ©
2008
<a class="ulink" href="http://www.fsf.org/" target="_top">FSF
</a>
</p></div><div><div class="legalnotice"><a id="id596116"></a><p>
</p></div><div><div class="legalnotice" title="Legal Notice"><a id="id379526"></a><p>
<a class="link" href="manual/license.html" title="License">License
</a>
</p></div></div></div><hr /></div><p>
......@@ -19,22 +19,22 @@ file, looking at inheritance diagrams, etc.
</p><p>
The source-level documentation for the most recent releases can be
viewed online:
</p><div class="itemizedlist"><ul type="disc"><li><p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
<a class="ulink" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-3.4/index.html" target="_top">for the 3.4 release
</a>
</p></li><li><p>
</p></li><li class="listitem"><p>
<a class="ulink" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.1/index.html" target="_top">for the 4.1 release
</a>
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</p></li><li class="listitem"><p>
<a class="ulink" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.2/index.html" target="_top">for the 4.2 release
</a>
</p></li><li><p>
</p></li><li class="listitem"><p>
<a class="ulink" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.3/index.html" target="_top">for the 4.3 release
</a>
</p></li><li><p>
</p></li><li class="listitem"><p>
<a class="ulink" href="http://gcc.gnu.org/onlinedocs/libstdc++/libstdc++-html-USERS-4.4/index.html" target="_top">for the 4.4 release
</a>
</p></li><li><p>
</p></li><li class="listitem"><p>
<a class="ulink" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/index.html" target="_top">"the latest collection"
</a>
(For the main development tree; see the date on the first page.)
......
libstdc++-v3/doc/html/bk02.html
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title></title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="spine.html" title="The GNU C++ Library Documentation" /><link rel="prev" href="api.html" title="API and Source Level Documentation" /><link rel="next" href="faq.html" title="Frequently Asked Questions" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="api.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="faq.html">Next</a></td></tr></table><hr /></div><div class="book"><div class="titlepage"><hr /></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="article"><a href="faq.html">Frequently Asked Questions</a></span></dt></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="api.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="faq.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">API and Source Level Documentation </td><td width="20%" align="center"><a accesskey="h" href="spine.html">Home</a></td><td width="40%" align="right" valign="top"> Frequently Asked Questions</td></tr></table></div></body></html>
libstdc++-v3/doc/html/manual/algorithms.html
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Part IX.  Algorithms</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; , &#10; algorithm&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="spine.html" title="The GNU C++ Library" /><link rel="prev" href="bk01pt08ch19s02.html" title="One Past the End" /><link rel="next" href="bk01pt09pr02.html" title="" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Part IX. 
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Part IX.  Algorithms</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; , &#10; algorithm&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="spine.html" title="The GNU C++ Library" /><link rel="prev" href="bk01pt08ch19s02.html" title="One Past the End" /><link rel="next" href="bk01pt09pr02.html" title="" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Part IX. 
Algorithms
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt08ch19s02.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt09pr02.html">Next</a></td></tr></table><hr /></div><div class="part" lang="en" xml:lang="en"><div class="titlepage"><div><div><h1 class="title"><a id="manual.algorithms"></a>Part IX. 
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Algorithms
<a id="id721514" class="indexterm"></a>
</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="preface"><a href="bk01pt09pr02.html"></a></span></dt><dt><span class="chapter"><a href="bk01pt09ch20.html">20. Mutating</a></span></dt><dd><dl><dt><span class="sect1"><a href="bk01pt09ch20.html#algorithms.mutating.swap">swap</a></span></dt><dd><dl><dt><span class="sect2"><a href="bk01pt09ch20.html#algorithms.swap.specializations">Specializations</a></span></dt></dl></dd></dl></dd></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt08ch19s02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="spine.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt09pr02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">One Past the End </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
<a id="id455873" class="indexterm"></a>
</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="preface"><a href="bk01pt09pr02.html"></a></span></dt><dt><span class="chapter"><a href="bk01pt09ch20.html">20. Mutating</a></span></dt><dd><dl><dt><span class="sect1"><a href="bk01pt09ch20.html#algorithms.mutating.swap"><code class="function">swap</code></a></span></dt><dd><dl><dt><span class="sect2"><a href="bk01pt09ch20.html#algorithms.swap.specializations">Specializations</a></span></dt></dl></dd></dl></dd></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt08ch19s02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="spine.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt09pr02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">One Past the End </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
libstdc++-v3/doc/html/manual/appendix_free.html
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Appendix C.  Free Software Needs Free Documentation</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="spine.html" title="The GNU C++ Library" /><link rel="prev" href="backwards.html" title="Backwards Compatibility" /><link rel="next" href="appendix_gpl.html" title="Appendix D.  GNU General Public License version 3" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix C. 
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Appendix C.  Free Software Needs Free Documentation</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="spine.html" title="The GNU C++ Library" /><link rel="prev" href="backwards.html" title="Backwards Compatibility" /><link rel="next" href="appendix_gpl.html" title="Appendix D.  GNU General Public License version 3" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix C. 
Free Software Needs Free Documentation
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="backwards.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library</th><td width="20%" align="right"> <a accesskey="n" href="appendix_gpl.html">Next</a></td></tr></table><hr /></div><div class="appendix" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="appendix.free"></a>Appendix C. 
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="backwards.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library</th><td width="20%" align="right"> <a accesskey="n" href="appendix_gpl.html">Next</a></td></tr></table><hr /></div><div class="appendix" title="Appendix C.  Free Software Needs Free Documentation"><div class="titlepage"><div><div><h2 class="title"><a id="appendix.free"></a>Appendix C. 
Free Software Needs Free Documentation
<a id="id675332" class="indexterm"></a>
<a id="id519719" class="indexterm"></a>
</h2></div></div></div><p>
The biggest deficiency in free operating systems is not in the
software--it is the lack of good free manuals that we can include in
......@@ -120,5 +120,5 @@ that lists free books available from other publishers</a>].
</p><p>Copyright © 2004, 2005, 2006, 2007 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA</p><p>Verbatim copying and distribution of this entire article are
permitted worldwide, without royalty, in any medium, provided this
notice is preserved.</p><p>Report any problems or suggestions to <code class="email">&lt;<a class="email" href="mailto:webmaster@fsf.org">webmaster@fsf.org</a>&gt;</code>.</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="backwards.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="spine.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="appendix_gpl.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Backwards Compatibility </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> Appendix D. 
GNU General Public License version 3
<acronym class="acronym">GNU</acronym> General Public License version 3
</td></tr></table></div></body></html>
libstdc++-v3/doc/html/manual/appendix_gfdl.html
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Appendix E. GNU Free Documentation License</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="spine.html" title="The GNU C++ Library" /><link rel="prev" href="appendix_gpl.html" title="Appendix D.  GNU General Public License version 3" /><link rel="next" href="bk01ix01.html" title="Index" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix E. GNU Free Documentation License</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="appendix_gpl.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library</th><td width="20%" align="right"> <a accesskey="n" href="bk01ix01.html">Next</a></td></tr></table><hr /></div><div class="appendix" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="appendix.gfdl-1.2"></a>Appendix E. GNU Free Documentation License</h2></div></div></div><p>
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Appendix E. GNU Free Documentation License</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="spine.html" title="The GNU C++ Library" /><link rel="prev" href="appendix_gpl.html" title="Appendix D.  GNU General Public License version 3" /><link rel="next" href="bk01ix01.html" title="Index" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix E. GNU Free Documentation License</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="appendix_gpl.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library</th><td width="20%" align="right"> <a accesskey="n" href="bk01ix01.html">Next</a></td></tr></table><hr /></div><div class="appendix" title="Appendix E. GNU Free Documentation License"><div class="titlepage"><div><div><h2 class="title"><a id="appendix.gfdl-1.2"></a>Appendix E. GNU Free Documentation License</h2></div></div></div><p>
Copyright (C) 2000, 2001, 2002 Free Software Foundation,
<abbr class="abbrev">Inc.</abbr> 51 Franklin <abbr class="abbrev">St</abbr>, Fifth Floor,
Boston, <abbr class="abbrev">MA</abbr> 02110-1301 <abbr class="abbrev">USA</abbr>. Everyone is permitted to copy and
......@@ -173,36 +173,36 @@
filling the role of the Document, thus licensing distribution and
modification of the Modified Version to whoever possesses a copy of it.
In addition, you must do these things in the Modified Version:
</p><div class="orderedlist"><ol type="A"><li>
</p><div class="orderedlist"><ol class="orderedlist" type="A"><li class="listitem">
Use in the Title Page (and on the covers, if any) a title distinct
from that of the Document, and from those of previous versions (which
should, if there were any, be listed in the History section of the
Document). You may use the same title as a previous version if the
original publisher of that version gives permission.
</li><li>
</li><li class="listitem">
List on the Title Page, as authors, one or more persons or entities
responsible for authorship of the modifications in the Modified
Version, together with at least five of the principal authors of the
Document (all of its principal authors, if it has fewer than five),
unless they release you from this requirement.
</li><li>
</li><li class="listitem">
State on the Title page the name of the publisher of the Modified
Version, as the publisher.
</li><li>
</li><li class="listitem">
Preserve all the copyright notices of the Document.
</li><li>
</li><li class="listitem">
Add an appropriate copyright notice for your modifications adjacent to
the other copyright notices.
</li><li>
</li><li class="listitem">
Include, immediately after the copyright notices, a license notice
giving the public permission to use the Modified Version under the
terms of this License, in the form shown in the Addendum below.
</li><li>
</li><li class="listitem">
Preserve in that license notice the full lists of Invariant Sections
and required Cover Texts given in the Document's license notice.
</li><li>
</li><li class="listitem">
Include an unaltered copy of this License.
</li><li>
</li><li class="listitem">
Preserve the section Entitled "History", Preserve its Title, and add
to it an item stating at least the title, year, new authors, and
publisher of the Modified Version as given on the Title Page. If
......@@ -210,7 +210,7 @@
stating the title, year, authors, and publisher of the Document as
given on its Title Page, then add an item describing the Modified
Version as stated in the previous sentence.
</li><li>
</li><li class="listitem">
Preserve the network location, if any, given in the Document for
public access to a Transparent copy of the Document, and likewise the
network locations given in the Document for previous versions it was
......@@ -218,22 +218,22 @@
a network location for a work that was published at least four years
before the Document itself, or if the original publisher of the
version it refers to gives permission.
</li><li>
</li><li class="listitem">
For any section Entitled "Acknowledgements" or "Dedications", Preserve
the Title of the section, and preserve in the section all the
substance and tone of each of the contributor acknowledgements and/or
dedications given therein.
</li><li>
</li><li class="listitem">
Preserve all the Invariant Sections of the Document, unaltered in
their text and in their titles. Section numbers or the equivalent are
not considered part of the section titles.
</li><li>
</li><li class="listitem">
Delete any section Entitled "Endorsements". Such a section may not be
included in the Modified Version.
</li><li>
</li><li class="listitem">
Do not retitle any existing section to be Entitled "Endorsements" or
to conflict in title with any Invariant Section.
</li><li>
</li><li class="listitem">
Preserve any Warranty Disclaimers.
</li></ol></div><p>
If the Modified Version includes new front-matter sections or appendices
......@@ -391,5 +391,5 @@
software license, such as the GNU General Public License, to permit their
use in free software.
</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="appendix_gpl.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="spine.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01ix01.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Appendix D. 
GNU General Public License version 3
<acronym class="acronym">GNU</acronym> General Public License version 3
 </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> Index</td></tr></table></div></body></html>
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GNU General Public License version 3
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Appendix D.  GNU General Public License version 3</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="spine.html" title="The GNU C++ Library" /><link rel="prev" href="appendix_free.html" title="Appendix C.  Free Software Needs Free Documentation" /><link rel="next" href="appendix_gfdl.html" title="Appendix E. GNU Free Documentation License" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix D. 
<acronym class="acronym">GNU</acronym> General Public License version 3
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="appendix_free.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library</th><td width="20%" align="right"> <a accesskey="n" href="appendix_gfdl.html">Next</a></td></tr></table><hr /></div><div class="appendix" title="Appendix D.  GNU General Public License version 3"><div class="titlepage"><div><div><h2 class="title"><a id="appendix.gpl-3.0"></a>Appendix D. 
<acronym class="acronym">GNU</acronym> General Public License version 3
</h2></div></div></div><p>
Version 3, 29 June 2007
......@@ -76,7 +76,7 @@
</p><p>
The precise terms and conditions for copying, distribution and modification
follow.
</p><h2><a id="id746936"></a>
</p><h2><a id="id521172"></a>
TERMS AND CONDITIONS
</h2><h2><a id="gpl-3-definitions"></a>
0. Definitions.
......@@ -219,15 +219,15 @@
You may convey a work based on the Program, or the modifications to produce
it from the Program, in the form of source code under the terms of section
4, provided that you also meet all of these conditions:
</p><div class="orderedlist"><ol type="a"><li><p>
</p><div class="orderedlist"><ol class="orderedlist" type="a"><li class="listitem"><p>
The work must carry prominent notices stating that you modified it, and
giving a relevant date.
</p></li><li><p>
</p></li><li class="listitem"><p>
The work must carry prominent notices stating that it is released under
this License and any conditions added under section 7. This requirement
modifies the requirement in section 4 to “keep intact all
notices”.
</p></li><li><p>
</p></li><li class="listitem"><p>
You must license the entire work, as a whole, under this License to
anyone who comes into possession of a copy. This License will therefore
apply, along with any applicable section 7 additional terms, to the
......@@ -235,7 +235,7 @@
packaged. This License gives no permission to license the work in any
other way, but it does not invalidate such permission if you have
separately received it.
</p></li><li><p>
</p></li><li class="listitem"><p>
If the work has interactive user interfaces, each must display
Appropriate Legal Notices; however, if the Program has interactive
interfaces that do not display Appropriate Legal Notices, your work need
......@@ -255,12 +255,12 @@
You may convey a covered work in object code form under the terms of
sections 4 and 5, provided that you also convey the machine-readable
Corresponding Source under the terms of this License, in one of these ways:
</p><div class="orderedlist"><ol type="a"><li><p>
</p><div class="orderedlist"><ol class="orderedlist" type="a"><li class="listitem"><p>
Convey the object code in, or embodied in, a physical product (including
a physical distribution medium), accompanied by the Corresponding Source
fixed on a durable physical medium customarily used for software
interchange.
</p></li><li><p>
</p></li><li class="listitem"><p>
Convey the object code in, or embodied in, a physical product (including
a physical distribution medium), accompanied by a written offer, valid
for at least three years and valid for as long as you offer spare parts
......@@ -271,12 +271,12 @@
price no more than your reasonable cost of physically performing this
conveying of source, or (2) access to copy the Corresponding Source from
a network server at no charge.
</p></li><li><p>
</p></li><li class="listitem"><p>
Convey individual copies of the object code with a copy of the written
offer to provide the Corresponding Source. This alternative is allowed
only occasionally and noncommercially, and only if you received the
object code with such an offer, in accord with subsection 6b.
</p></li><li><p>
</p></li><li class="listitem"><p>
Convey the object code by offering access from a designated place
(gratis or for a charge), and offer equivalent access to the
Corresponding Source in the same way through the same place at no
......@@ -289,7 +289,7 @@
Regardless of what server hosts the Corresponding Source, you remain
obligated to ensure that it is available for as long as needed to
satisfy these requirements.
</p></li><li><p>
</p></li><li class="listitem"><p>
Convey the object code using peer-to-peer transmission, provided you
inform other peers where the object code and Corresponding Source of the
work are being offered to the general public at no charge under
......@@ -366,24 +366,24 @@
Notwithstanding any other provision of this License, for material you add
to a covered work, you may (if authorized by the copyright holders of that
material) supplement the terms of this License with terms:
</p><div class="orderedlist"><ol type="a"><li><p>
</p><div class="orderedlist"><ol class="orderedlist" type="a"><li class="listitem"><p>
Disclaiming warranty or limiting liability differently from the terms
of sections 15 and 16 of this License; or
</p></li><li><p>
</p></li><li class="listitem"><p>
Requiring preservation of specified reasonable legal notices or author
attributions in that material or in the Appropriate Legal Notices
displayed by works containing it; or
</p></li><li><p>
</p></li><li class="listitem"><p>
Prohibiting misrepresentation of the origin of that material, or
requiring that modified versions of such material be marked in
reasonable ways as different from the original version; or
</p></li><li><p>
</p></li><li class="listitem"><p>
Limiting the use for publicity purposes of names of licensors or
authors of the material; or
</p></li><li><p>
</p></li><li class="listitem"><p>
Declining to grant rights under trademark law for use of some trade
names, trademarks, or service marks; or
</p></li><li><p>
</p></li><li class="listitem"><p>
Requiring indemnification of licensors and authors of that material by
anyone who conveys the material (or modified versions of it) with
contractual assumptions of liability to the recipient, for any
......@@ -617,7 +617,7 @@
waiver of all civil liability in connection with the Program, unless a
warranty or assumption of liability accompanies a copy of the Program in
return for a fee.
</p><h2><a id="id654357"></a>
</p><h2><a id="id519116"></a>
END OF TERMS AND CONDITIONS
</h2><h2><a id="HowToApply"></a>
How to Apply These Terms to Your New Programs
......
libstdc++-v3/doc/html/manual/associative.html
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 17. Associative</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="containers.html" title="Part VII.  Containers" /><link rel="prev" href="vector.html" title="vector" /><link rel="next" href="bitset.html" title="bitset" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 17. Associative</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="vector.html">Prev</a> </td><th width="60%" align="center">Part VII. 
Containers
</th><td width="20%" align="right"> <a accesskey="n" href="bitset.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="manual.containers.associative"></a>Chapter 17. Associative</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="associative.html#containers.associative.insert_hints">Insertion Hints</a></span></dt><dt><span class="sect1"><a href="bitset.html">bitset</a></span></dt><dd><dl><dt><span class="sect2"><a href="bitset.html#associative.bitset.size_variable">Size Variable</a></span></dt><dt><span class="sect2"><a href="bitset.html#associative.bitset.type_string">Type String</a></span></dt></dl></dd></dl></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="containers.associative.insert_hints"></a>Insertion Hints</h2></div></div></div><p>
</th><td width="20%" align="right"> <a accesskey="n" href="bitset.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 17. Associative"><div class="titlepage"><div><div><h2 class="title"><a id="manual.containers.associative"></a>Chapter 17. Associative</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="associative.html#containers.associative.insert_hints">Insertion Hints</a></span></dt><dt><span class="sect1"><a href="bitset.html">bitset</a></span></dt><dd><dl><dt><span class="sect2"><a href="bitset.html#associative.bitset.size_variable">Size Variable</a></span></dt><dt><span class="sect2"><a href="bitset.html#associative.bitset.type_string">Type String</a></span></dt></dl></dd></dl></div><div class="sect1" title="Insertion Hints"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="containers.associative.insert_hints"></a>Insertion Hints</h2></div></div></div><p>
Section [23.1.2], Table 69, of the C++ standard lists this
function for all of the associative containers (map, set, etc):
</p><pre class="programlisting">
a.insert(p,t);
</pre><p>
where 'p' is an iterator into the container 'a', and 't' is the
item to insert. The standard says that “<span class="quote"><code class="code">t</code> is
item to insert. The standard says that <span class="quote">“<span class="quote"><code class="code">t</code> is
inserted as close as possible to the position just prior to
<code class="code">p</code>.</span>” (Library DR #233 addresses this topic,
<code class="code">p</code>.</span>”</span> (Library DR #233 addresses this topic,
referring to <a class="ulink" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1780.html" target="_top">N1780</a>.
Since version 4.2 GCC implements the resolution to DR 233, so
that insertions happen as close as possible to the hint. For
......@@ -31,25 +31,25 @@
than</em></span> and <span class="emphasis"><em>less than</em></span> refer to the
results of the strict weak ordering imposed on the container by
its comparison object, which defaults to (basically)
“<span class="quote">&lt;</span>”. Using those phrases is semantically sloppy,
<span class="quote">“<span class="quote">&lt;</span>”</span>. Using those phrases is semantically sloppy,
but I didn't want to get bogged down in syntax. I assume that if
you are intelligent enough to use your own comparison objects,
you are also intelligent enough to assign “<span class="quote">greater</span>”
and “<span class="quote">lesser</span>” their new meanings in the next
you are also intelligent enough to assign <span class="quote">“<span class="quote">greater</span>”</span>
and <span class="quote">“<span class="quote">lesser</span>”</span> their new meanings in the next
paragraph. *grin*
</p><p>
If the <code class="code">hint</code> parameter ('p' above) is equivalent to:
</p><div class="itemizedlist"><ul type="disc"><li><p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
<code class="code">begin()</code>, then the item being inserted should
have a key less than all the other keys in the container.
The item will be inserted at the beginning of the container,
becoming the new entry at <code class="code">begin()</code>.
</p></li><li><p>
</p></li><li class="listitem"><p>
<code class="code">end()</code>, then the item being inserted should have
a key greater than all the other keys in the container. The
item will be inserted at the end of the container, becoming
the new entry at <code class="code">end()</code>.
</p></li><li><p>
</p></li><li class="listitem"><p>
neither <code class="code">begin()</code> nor <code class="code">end()</code>, then:
Let <code class="code">h</code> be the entry in the container pointed to
by <code class="code">hint</code>, that is, <code class="code">h = *hint</code>. Then
......@@ -59,10 +59,10 @@
<code class="code">h</code> and <code class="code">h</code>'s predecessor.
</p></li></ul></div><p>
For <code class="code">multimap</code> and <code class="code">multiset</code>, the
restrictions are slightly looser: “<span class="quote">greater than</span>”
should be replaced by “<span class="quote">not less than</span>”and “<span class="quote">less
than</span>” should be replaced by “<span class="quote">not greater
than.</span>” (Why not replace greater with
restrictions are slightly looser: <span class="quote">“<span class="quote">greater than</span>”</span>
should be replaced by <span class="quote">“<span class="quote">not less than</span>”</span>and <span class="quote">“<span class="quote">less
than</span>”</span> should be replaced by <span class="quote">“<span class="quote">not greater
than.</span>”</span> (Why not replace greater with
greater-than-or-equal-to? You probably could in your head, but
the mathematicians will tell you that it isn't the same thing.)
</p><p>
......
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>auto_ptr</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; auto_ptr&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="memory.html" title="Chapter 11. Memory" /><link rel="prev" href="memory.html" title="Chapter 11. Memory" /><link rel="next" href="shared_ptr.html" title="shared_ptr" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">auto_ptr</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="memory.html">Prev</a> </td><th width="60%" align="center">Chapter 11. Memory</th><td width="20%" align="right"> <a accesskey="n" href="shared_ptr.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.util.memory.auto_ptr"></a>auto_ptr</h2></div></div></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="auto_ptr.limitations"></a>Limitations</h3></div></div></div><p>Explaining all of the fun and delicious things that can
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>auto_ptr</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; auto_ptr&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="memory.html" title="Chapter 11. Memory" /><link rel="prev" href="memory.html" title="Chapter 11. Memory" /><link rel="next" href="shared_ptr.html" title="shared_ptr" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">auto_ptr</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="memory.html">Prev</a> </td><th width="60%" align="center">Chapter 11. Memory</th><td width="20%" align="right"> <a accesskey="n" href="shared_ptr.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="auto_ptr"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.util.memory.auto_ptr"></a>auto_ptr</h2></div></div></div><div class="sect2" title="Limitations"><div class="titlepage"><div><div><h3 class="title"><a id="auto_ptr.limitations"></a>Limitations</h3></div></div></div><p>Explaining all of the fun and delicious things that can
happen with misuse of the <code class="classname">auto_ptr</code> class
template (called <acronym class="acronym">AP</acronym> here) would take some
time. Suffice it to say that the use of <acronym class="acronym">AP</acronym>
......@@ -51,7 +51,7 @@
to die. AP is trivial to write, however, so you could write your
own <code class="code">auto_array_ptr</code> for that situation (in fact, this has
been done many times; check the mailing lists, Usenet, Boost, etc).
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="auto_ptr.using"></a>Use in Containers</h3></div></div></div><p>
</p></div><div class="sect2" title="Use in Containers"><div class="titlepage"><div><div><h3 class="title"><a id="auto_ptr.using"></a>Use in Containers</h3></div></div></div><p>
</p><p>All of the <a class="link" href="containers.html" title="Part VII.  Containers">containers</a>
described in the standard library require their contained types
to have, among other things, a copy constructor like this:
......@@ -70,7 +70,7 @@
</p><p>
The resulting rule is simple: <span class="emphasis"><em>Never ever use a
container of auto_ptr objects</em></span>. The standard says that
“<span class="quote">undefined</span>” behavior is the result, but it is
<span class="quote">“<span class="quote">undefined</span>”</span> behavior is the result, but it is
guaranteed to be messy.
</p><p>
To prevent you from doing this to yourself, the
......
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>bitset</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="associative.html" title="Chapter 17. Associative" /><link rel="prev" href="associative.html" title="Chapter 17. Associative" /><link rel="next" href="containers_and_c.html" title="Chapter 18. Interacting with C" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">bitset</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="associative.html">Prev</a> </td><th width="60%" align="center">Chapter 17. Associative</th><td width="20%" align="right"> <a accesskey="n" href="containers_and_c.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="bitset"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="containers.associative.bitset"></a>bitset</h2></div></div></div><div class="sect2" title="Size Variable"><div class="titlepage"><div><div><h3 class="title"><a id="associative.bitset.size_variable"></a>Size Variable</h3></div></div></div><p>
No, you cannot write code of the form
</p><pre class="programlisting">
#include &lt;bitset&gt;
......@@ -18,7 +18,7 @@
There are a couple of ways to handle this kind of thing. Please
consider all of them before passing judgement. They include, in
no particular order:
</p><div class="itemizedlist"><ul type="disc"><li><p>A very large N in <code class="code">bitset&lt;N&gt;</code>.</p></li><li><p>A container&lt;bool&gt;.</p></li><li><p>Extremely weird solutions.</p></li></ul></div><p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>A very large N in <code class="code">bitset&lt;N&gt;</code>.</p></li><li class="listitem"><p>A container&lt;bool&gt;.</p></li><li class="listitem"><p>Extremely weird solutions.</p></li></ul></div><p>
<span class="emphasis"><em>A very large N in
<code class="code">bitset&lt;N&gt;</code>.  </em></span> It has been
pointed out a few times in newsgroups that N bits only takes up
......@@ -28,10 +28,10 @@
housekeeping info; it is known at compile time exactly how large
the set is) will hold over four million bits. If you're using
those bits as status flags (e.g.,
“<span class="quote">changed</span>”/“<span class="quote">unchanged</span>” flags), that's a
<span class="quote">“<span class="quote">changed</span>”</span>/<span class="quote">“<span class="quote">unchanged</span>”</span> flags), that's a
<span class="emphasis"><em>lot</em></span> of state.
</p><p>
You can then keep track of the “<span class="quote">maximum bit used</span>”
You can then keep track of the <span class="quote">“<span class="quote">maximum bit used</span>”</span>
during some testing runs on representative data, make note of how
many of those bits really need to be there, and then reduce N to
a smaller number. Leave some extra space, of course. (If you
......@@ -85,21 +85,21 @@
</p><p>
Also note that the implementation of bitset used in libstdc++ has
<a class="link" href="bk01pt12ch34s02.html" title="HP/SGI">some extensions</a>.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="associative.bitset.type_string"></a>Type String</h3></div></div></div><p>
</p></div><div class="sect2" title="Type String"><div class="titlepage"><div><div><h3 class="title"><a id="associative.bitset.type_string"></a>Type String</h3></div></div></div><p>
</p><p>
Bitmasks do not take char* nor const char* arguments in their
constructors. This is something of an accident, but you can read
about the problem: follow the library's “<span class="quote">Links</span>” from
the homepage, and from the C++ information “<span class="quote">defect
reflector</span>” link, select the library issues list. Issue
about the problem: follow the library's <span class="quote">“<span class="quote">Links</span>”</span> from
the homepage, and from the C++ information <span class="quote">“<span class="quote">defect
reflector</span>”</span> link, select the library issues list. Issue
number 116 describes the problem.
</p><p>
For now you can simply make a temporary string object using the
constructor expression:
</p><pre class="programlisting">
std::bitset&lt;5&gt; b ( std::string(“<span class="quote">10110</span>”) );
std::bitset&lt;5&gt; b ( std::string(<span class="quote">“<span class="quote">10110</span>”</span>) );
</pre><p>
instead of
</p><pre class="programlisting">
std::bitset&lt;5&gt; b ( “<span class="quote">10110</span>” ); // invalid
std::bitset&lt;5&gt; b ( <span class="quote">“<span class="quote">10110</span>”</span> ); // invalid
</pre></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="associative.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="associative.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="containers_and_c.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 17. Associative </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 18. Interacting with C</td></tr></table></div></body></html>
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......@@ -42,7 +42,10 @@
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Qualifying Exception Safety Guarantees
</a></dt></dl></dd></dl></div><div class="indexdiv"><h3>U</h3><dl><dt>Utilities, <a class="indexterm" href="utilities.html">
Utilities
</a></dt></dl></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="appendix_gfdl.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="spine.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="../bk02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Appendix E. GNU Free Documentation License </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> </td></tr></table></div></body></html>
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The header <code class="filename">limits</code> defines
traits classes to give access to various implementation
defined-aspects of the fundamental types. The traits classes --
......
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The only change that might affect people is the type of
<code class="constant">NULL</code>: while it is required to be a macro,
the definition of that macro is <span class="emphasis"><em>not</em></span> allowed
......@@ -12,7 +12,7 @@
<span class="command"><strong>g++</strong></span>.
</p><p>
The biggest problem of #defining <code class="constant">NULL</code> to be
something like “<span class="quote">0L</span>” is that the compiler will view
something like <span class="quote">“<span class="quote">0L</span>”</span> is that the compiler will view
that as a long integer before it views it as a pointer, so
overloading won't do what you expect. (This is why
<span class="command"><strong>g++</strong></span> has a magic extension, so that
......
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</th><td width="20%" align="right"> <a accesskey="n" href="fundamental_types.html">Next</a></td></tr></table><hr /></div><div class="preface"><div class="titlepage"><div><div><h2 class="title"><a id="id507716"></a></h2></div></div></div><p>
This part deals with the functions called and objects created
automatically during the course of a program's existence.
</p><p>
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The standard exception classes carry with them a single string as
data (usually describing what went wrong or where the 'throw' took
place). It's good to remember that you can add your own data to
......
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In 1999, SGI added “<span class="quote">concept checkers</span>” to their
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In 1999, SGI added <span class="quote">“<span class="quote">concept checkers</span>”</span> to their
implementation of the STL: code which checked the template
parameters of instantiated pieces of the STL, in order to insure
that the parameters being used met the requirements of the
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Here are Standard, simple, and portable ways to perform common
transformations on a <code class="code">string</code> instance, such as
"convert to all upper case." The word transformations
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</p><p>The well-known-and-if-it-isn't-well-known-it-ought-to-be
<a class="ulink" href="http://www.gotw.ca/gotw/" target="_top">Guru of the Week</a>
discussions held on Usenet covered this topic in January of 1998.
Briefly, the challenge was, “<span class="quote">write a 'ci_string' class which
Briefly, the challenge was, <span class="quote">“<span class="quote">write a 'ci_string' class which
is identical to the standard 'string' class, but is
case-insensitive in the same way as the (common but nonstandard)
C function stricmp()</span>”.
C function stricmp()</span>”</span>.
</p><pre class="programlisting">
ci_string s( "AbCdE" );
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Arbitrary Character Types</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="bk01pt05ch13.html" title="Chapter 13. String Classes" /><link rel="prev" href="bk01pt05ch13s02.html" title="Case Sensitivity" /><link rel="next" href="bk01pt05ch13s04.html" title="Tokenizing" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Arbitrary Character Types</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt05ch13s02.html">Prev</a> </td><th width="60%" align="center">Chapter 13. String Classes</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt05ch13s04.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Arbitrary Character Types"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="strings.string.character_types"></a>Arbitrary Character Types</h2></div></div></div><p>
</p><p>The <code class="code">std::basic_string</code> is tantalizingly general, in that
it is parameterized on the type of the characters which it holds.
In theory, you could whip up a Unicode character class and instantiate
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</p><p>The Standard C (and C++) function <code class="code">strtok()</code> leaves a lot to
be desired in terms of user-friendliness. It's unintuitive, it
destroys the character string on which it operates, and it requires
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</p><p>From GCC 3.4 calling <code class="code">s.reserve(res)</code> on a
<code class="code">string s</code> with <code class="code">res &lt; s.capacity()</code> will
reduce the string's capacity to <code class="code">std::max(s.size(), res)</code>.
......@@ -10,7 +10,7 @@
std::string(str.data(), str.size()).swap(str);
</pre><p>This is similar to the idiom for reducing
a <code class="code">vector</code>'s memory usage
(see <a class="link" href="../faq.html#faq.size_equals_capacity" title="Question">this FAQ
(see <a class="link" href="../faq.html#faq.size_equals_capacity" title="7.8.">this FAQ
entry</a>) but the regular copy constructor cannot be used
because libstdc++'s <code class="code">string</code> is Copy-On-Write.
</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt05ch13s04.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bk01pt05ch13.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt05ch13s06.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Tokenizing </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> CString (MFC)</td></tr></table></div></body></html>
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</p><p>A common lament seen in various newsgroups deals with the Standard
string class as opposed to the Microsoft Foundation Class called
CString. Often programmers realize that a standard portable
......@@ -10,12 +10,12 @@
</p><p>Things are not as bad as they seem. In
<a class="ulink" href="http://gcc.gnu.org/ml/gcc/1999-04n/msg00236.html" target="_top">this
message</a>, Joe Buck points out a few very important things:
</p><div class="itemizedlist"><ul type="disc"><li><p>The Standard <code class="code">string</code> supports all the operations
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>The Standard <code class="code">string</code> supports all the operations
that CString does, with three exceptions.
</p></li><li><p>Two of those exceptions (whitespace trimming and case
</p></li><li class="listitem"><p>Two of those exceptions (whitespace trimming and case
conversion) are trivial to implement. In fact, we do so
on this page.
</p></li><li><p>The third is <code class="code">CString::Format</code>, which allows formatting
</p></li><li class="listitem"><p>The third is <code class="code">CString::Format</code>, which allows formatting
in the style of <code class="code">sprintf</code>. This deserves some mention:
</p></li></ul></div><p>
The old libg++ library had a function called form(), which did much
......@@ -68,18 +68,18 @@
performance is O(n).
</pre><p>Joe Buck also pointed out some other things to keep in mind when
comparing CString and the Standard string class:
</p><div class="itemizedlist"><ul type="disc"><li><p>CString permits access to its internal representation; coders
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>CString permits access to its internal representation; coders
who exploited that may have problems moving to <code class="code">string</code>.
</p></li><li><p>Microsoft ships the source to CString (in the files
</p></li><li class="listitem"><p>Microsoft ships the source to CString (in the files
MFC\SRC\Str{core,ex}.cpp), so you could fix the allocation
bug and rebuild your MFC libraries.
<span class="emphasis"><em><span class="emphasis"><em>Note:</em></span> It looks like the CString shipped
with VC++6.0 has fixed this, although it may in fact have been
one of the VC++ SPs that did it.</em></span>
</p></li><li><p><code class="code">string</code> operations like this have O(n) complexity
</p></li><li class="listitem"><p><code class="code">string</code> operations like this have O(n) complexity
<span class="emphasis"><em>if the implementors do it correctly</em></span>. The libstdc++
implementors did it correctly. Other vendors might not.
</p></li><li><p>While parts of the SGI STL are used in libstdc++, their
</p></li><li class="listitem"><p>While parts of the SGI STL are used in libstdc++, their
string class is not. The SGI <code class="code">string</code> is essentially
<code class="code">vector&lt;char&gt;</code> and does not do any reference
counting like libstdc++'s does. (It is O(n), though.)
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Iterators
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</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt08ch19s02.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 19. Predefined"><div class="titlepage"><div><div><h2 class="title"><a id="manual.iterators.predefined"></a>Chapter 19. Predefined</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="bk01pt08ch19.html#iterators.predefined.vs_pointers">Iterators vs. Pointers</a></span></dt><dt><span class="sect1"><a href="bk01pt08ch19s02.html">One Past the End</a></span></dt></dl></div><div class="sect1" title="Iterators vs. Pointers"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="iterators.predefined.vs_pointers"></a>Iterators vs. Pointers</h2></div></div></div><p>
The following
FAQ <a class="link" href="../faq.html#faq.iterator_as_pod" title="Question">entry</a> points out that
FAQ <a class="link" href="../faq.html#faq.iterator_as_pod" title="7.1.">entry</a> points out that
iterators are not implemented as pointers. They are a generalization
of pointers, but they are implemented in libstdc++ as separate
classes.
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>One Past the End</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="bk01pt08ch19.html" title="Chapter 19. Predefined" /><link rel="prev" href="bk01pt08ch19.html" title="Chapter 19. Predefined" /><link rel="next" href="algorithms.html" title="Part IX.  Algorithms" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">One Past the End</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt08ch19.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Predefined</th><td width="20%" align="right"> <a accesskey="n" href="algorithms.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="iterators.predefined.end"></a>One Past the End</h2></div></div></div><p>This starts off sounding complicated, but is actually very easy,
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>One Past the End</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="bk01pt08ch19.html" title="Chapter 19. Predefined" /><link rel="prev" href="bk01pt08ch19.html" title="Chapter 19. Predefined" /><link rel="next" href="algorithms.html" title="Part IX.  Algorithms" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">One Past the End</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt08ch19.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Predefined</th><td width="20%" align="right"> <a accesskey="n" href="algorithms.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="One Past the End"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="iterators.predefined.end"></a>One Past the End</h2></div></div></div><p>This starts off sounding complicated, but is actually very easy,
especially towards the end. Trust me.
</p><p>Beginners usually have a little trouble understand the whole
'past-the-end' thing, until they remember their early algebra classes
......@@ -9,15 +9,15 @@
</p><p>First, some history, and a reminder of some of the funkier rules in
C and C++ for builtin arrays. The following rules have always been
true for both languages:
</p><div class="orderedlist"><ol type="1"><li><p>You can point anywhere in the array, <span class="emphasis"><em>or to the first element
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>You can point anywhere in the array, <span class="emphasis"><em>or to the first element
past the end of the array</em></span>. A pointer that points to one
past the end of the array is guaranteed to be as unique as a
pointer to somewhere inside the array, so that you can compare
such pointers safely.
</p></li><li><p>You can only dereference a pointer that points into an array.
</p></li><li class="listitem"><p>You can only dereference a pointer that points into an array.
If your array pointer points outside the array -- even to just
one past the end -- and you dereference it, Bad Things happen.
</p></li><li><p>Strictly speaking, simply pointing anywhere else invokes
</p></li><li class="listitem"><p>Strictly speaking, simply pointing anywhere else invokes
undefined behavior. Most programs won't puke until such a
pointer is actually dereferenced, but the standards leave that
up to the platform.
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 20. Mutating</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; , &#10; algorithm&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="algorithms.html" title="Part IX.  Algorithms" /><link rel="prev" href="bk01pt09pr02.html" title="" /><link rel="next" href="numerics.html" title="Part X.  Numerics" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 20. Mutating</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt09pr02.html">Prev</a> </td><th width="60%" align="center">Part IX. 
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Algorithms
</th><td width="20%" align="right"> <a accesskey="n" href="numerics.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="manual.algorithms.mutating"></a>Chapter 20. Mutating</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="bk01pt09ch20.html#algorithms.mutating.swap">swap</a></span></dt><dd><dl><dt><span class="sect2"><a href="bk01pt09ch20.html#algorithms.swap.specializations">Specializations</a></span></dt></dl></dd></dl></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="algorithms.mutating.swap"></a><code class="function">swap</code></h2></div></div></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="algorithms.swap.specializations"></a>Specializations</h3></div></div></div><p>If you call <code class="code"> std::swap(x,y); </code> where x and y are standard
</th><td width="20%" align="right"> <a accesskey="n" href="numerics.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 20. Mutating"><div class="titlepage"><div><div><h2 class="title"><a id="manual.algorithms.mutating"></a>Chapter 20. Mutating</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="bk01pt09ch20.html#algorithms.mutating.swap"><code class="function">swap</code></a></span></dt><dd><dl><dt><span class="sect2"><a href="bk01pt09ch20.html#algorithms.swap.specializations">Specializations</a></span></dt></dl></dd></dl></div><div class="sect1" title="swap"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="algorithms.mutating.swap"></a><code class="function">swap</code></h2></div></div></div><div class="sect2" title="Specializations"><div class="titlepage"><div><div><h3 class="title"><a id="algorithms.swap.specializations"></a>Specializations</h3></div></div></div><p>If you call <code class="code"> std::swap(x,y); </code> where x and y are standard
containers, then the call will automatically be replaced by a call to
<code class="code"> x.swap(y); </code> instead.
</p><p>This allows member functions of each container class to take over, and
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Algorithms
</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt09ch20.html">Next</a></td></tr></table><hr /></div><div class="preface" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="id617760"></a></h2></div></div></div><p>
</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt09ch20.html">Next</a></td></tr></table><hr /></div><div class="preface"><div class="titlepage"><div><div><h2 class="title"><a id="id455881"></a></h2></div></div></div><p>
The neatest accomplishment of the algorithms chapter is that all the
work is done via iterators, not containers directly. This means two
important things:
</p><div class="orderedlist"><ol type="1"><li><p>
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
Anything that behaves like an iterator can be used in one of
these algorithms. Raw pointers make great candidates, thus
built-in arrays are fine containers, as well as your own iterators.
</p></li><li><p>
</p></li><li class="listitem"><p>
The algorithms do not (and cannot) affect the container as a
whole; only the things between the two iterator endpoints. If
you pass a range of iterators only enclosing the middle third of
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>C99</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="numerics_and_c.html" title="Chapter 23. Interacting with C" /><link rel="prev" href="numerics_and_c.html" title="Chapter 23. Interacting with C" /><link rel="next" href="io.html" title="Part XI.  Input and Output" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">C99</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="numerics_and_c.html">Prev</a> </td><th width="60%" align="center">Chapter 23. Interacting with C</th><td width="20%" align="right"> <a accesskey="n" href="io.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="numerics.c.c99"></a>C99</h2></div></div></div><p>In addition to the other topics on this page, we'll note here some
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>C99</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="numerics_and_c.html" title="Chapter 23. Interacting with C" /><link rel="prev" href="numerics_and_c.html" title="Chapter 23. Interacting with C" /><link rel="next" href="io.html" title="Part XI.  Input and Output" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">C99</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="numerics_and_c.html">Prev</a> </td><th width="60%" align="center">Chapter 23. Interacting with C</th><td width="20%" align="right"> <a accesskey="n" href="io.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="C99"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="numerics.c.c99"></a>C99</h2></div></div></div><p>In addition to the other topics on this page, we'll note here some
of the C99 features that appear in libstdc++.
</p><p>The C99 features depend on the <code class="code">--enable-c99</code> configure flag.
This flag is already on by default, but it can be disabled by the
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Buffering</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="streambufs.html" title="Chapter 25. Stream Buffers" /><link rel="prev" href="streambufs.html" title="Chapter 25. Stream Buffers" /><link rel="next" href="stringstreams.html" title="Chapter 26. Memory Based Streams" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Buffering</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="streambufs.html">Prev</a> </td><th width="60%" align="center">Chapter 25. Stream Buffers</th><td width="20%" align="right"> <a accesskey="n" href="stringstreams.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Buffering"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="io.streambuf.buffering"></a>Buffering</h2></div></div></div><p>First, are you sure that you understand buffering? Particularly
the fact that C++ may not, in fact, have anything to do with it?
</p><p>The rules for buffering can be a little odd, but they aren't any
different from those of C. (Maybe that's why they can be a bit
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Binary Input and Output</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="fstreams.html" title="Chapter 27. File Based Streams" /><link rel="prev" href="fstreams.html" title="Chapter 27. File Based Streams" /><link rel="next" href="io_and_c.html" title="Chapter 28. Interacting with C" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Binary Input and Output</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="fstreams.html">Prev</a> </td><th width="60%" align="center">Chapter 27. File Based Streams</th><td width="20%" align="right"> <a accesskey="n" href="io_and_c.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Binary Input and Output"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.io.filestreams.binary"></a>Binary Input and Output</h2></div></div></div><p>
</p><p>The first and most important thing to remember about binary I/O is
that opening a file with <code class="code">ios::binary</code> is not, repeat
<span class="emphasis"><em>not</em></span>, the only thing you have to do. It is not a silver
......@@ -38,26 +38,26 @@
of <span class="emphasis"><em>formatting</em></span> functions and classes to perform something
which <span class="emphasis"><em>requires</em></span> that formatting not be done? There are a
seemingly infinite number of solutions, and a few are listed here:
</p><div class="itemizedlist"><ul type="disc"><li><p>“<span class="quote">Derive your own fstream-type classes and write your own
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="quote">“<span class="quote">Derive your own fstream-type classes and write your own
&lt;&lt;/&gt;&gt; operators to do binary I/O on whatever data
types you're using.</span>”
types you're using.</span>”</span>
</p><p>
This is a Bad Thing, because while
the compiler would probably be just fine with it, other humans
are going to be confused. The overloaded bitshift operators
have a well-defined meaning (formatting), and this breaks it.
</p></li><li><p>
“<span class="quote">Build the file structure in memory, then
</p></li><li class="listitem"><p>
<span class="quote">“<span class="quote">Build the file structure in memory, then
<code class="code">mmap()</code> the file and copy the
structure.
</span>”
</span>”</span>
</p><p>
Well, this is easy to make work, and easy to break, and is
pretty equivalent to using <code class="code">::read()</code> and
<code class="code">::write()</code> directly, and makes no use of the
iostream library at all...
</p></li><li><p>
“<span class="quote">Use streambufs, that's what they're there for.</span>”
</p></li><li class="listitem"><p>
<span class="quote">“<span class="quote">Use streambufs, that's what they're there for.</span>”</span>
</p><p>
While not trivial for the beginner, this is the best of all
solutions. The streambuf/filebuf layer is the layer that is
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Performance</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="io_and_c.html" title="Chapter 28. Interacting with C" /><link rel="prev" href="io_and_c.html" title="Chapter 28. Interacting with C" /><link rel="next" href="extensions.html" title="Part XII.  Extensions" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Performance</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="io_and_c.html">Prev</a> </td><th width="60%" align="center">Chapter 28. Interacting with C</th><td width="20%" align="right"> <a accesskey="n" href="extensions.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Performance"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.io.c.sync"></a>Performance</h2></div></div></div><p>
Pathetic Performance? Ditch C.
</p><p>It sounds like a flame on C, but it isn't. Really. Calm down.
I'm just saying it to get your attention.
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Semantics</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; C++&#10; , &#10; library&#10; , &#10; debug&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="debug_mode.html" title="Chapter 30. Debug Mode" /><link rel="prev" href="debug_mode.html" title="Chapter 30. Debug Mode" /><link rel="next" href="bk01pt12ch30s03.html" title="Using" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Semantics</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="debug_mode.html">Prev</a> </td><th width="60%" align="center">Chapter 30. Debug Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch30s03.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Semantics"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.debug_mode.semantics"></a>Semantics</h2></div></div></div><p>
</p><p>A program that uses the C++ standard library correctly
will maintain the same semantics under debug mode as it had with
the normal (release) library. All functional and exception-handling
......@@ -36,7 +36,7 @@
(N.B. In GCC 3.4.x and 4.0.0, due to a bug,
<code class="code">-D_GLIBXX_DEBUG_PEDANTIC</code> was also needed. The problem has
been fixed in GCC 4.0.1 and later versions.) </p><p>The following library components provide extra debugging
capabilities in debug mode:</p><div class="itemizedlist"><ul type="disc"><li><p><code class="code">std::basic_string</code> (no safe iterators and see note below)</p></li><li><p><code class="code">std::bitset</code></p></li><li><p><code class="code">std::deque</code></p></li><li><p><code class="code">std::list</code></p></li><li><p><code class="code">std::map</code></p></li><li><p><code class="code">std::multimap</code></p></li><li><p><code class="code">std::multiset</code></p></li><li><p><code class="code">std::set</code></p></li><li><p><code class="code">std::vector</code></p></li><li><p><code class="code">std::unordered_map</code></p></li><li><p><code class="code">std::unordered_multimap</code></p></li><li><p><code class="code">std::unordered_set</code></p></li><li><p><code class="code">std::unordered_multiset</code></p></li></ul></div><p>N.B. although there are precondition checks for some string operations,
capabilities in debug mode:</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">std::basic_string</code> (no safe iterators and see note below)</p></li><li class="listitem"><p><code class="code">std::bitset</code></p></li><li class="listitem"><p><code class="code">std::deque</code></p></li><li class="listitem"><p><code class="code">std::list</code></p></li><li class="listitem"><p><code class="code">std::map</code></p></li><li class="listitem"><p><code class="code">std::multimap</code></p></li><li class="listitem"><p><code class="code">std::multiset</code></p></li><li class="listitem"><p><code class="code">std::set</code></p></li><li class="listitem"><p><code class="code">std::vector</code></p></li><li class="listitem"><p><code class="code">std::unordered_map</code></p></li><li class="listitem"><p><code class="code">std::unordered_multimap</code></p></li><li class="listitem"><p><code class="code">std::unordered_set</code></p></li><li class="listitem"><p><code class="code">std::unordered_multiset</code></p></li></ul></div><p>N.B. although there are precondition checks for some string operations,
e.g. <code class="code">operator[]</code>,
they will not always be run when using the <code class="code">char</code> and
<code class="code">wchar_t</code> specialisations (<code class="code">std::string</code> and
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Semantics</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; C++&#10; , &#10; library&#10; , &#10; parallel&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="parallel_mode.html" title="Chapter 31. Parallel Mode" /><link rel="prev" href="parallel_mode.html" title="Chapter 31. Parallel Mode" /><link rel="next" href="bk01pt12ch31s03.html" title="Using" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Semantics</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="parallel_mode.html">Prev</a> </td><th width="60%" align="center">Chapter 31. Parallel Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch31s03.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.parallel_mode.semantics"></a>Semantics</h2></div></div></div><p> The parallel mode STL algorithms are currently not exception-safe,
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Semantics</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; C++&#10; , &#10; library&#10; , &#10; parallel&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="parallel_mode.html" title="Chapter 31. Parallel Mode" /><link rel="prev" href="parallel_mode.html" title="Chapter 31. Parallel Mode" /><link rel="next" href="bk01pt12ch31s03.html" title="Using" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Semantics</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="parallel_mode.html">Prev</a> </td><th width="60%" align="center">Chapter 31. Parallel Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch31s03.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Semantics"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.parallel_mode.semantics"></a>Semantics</h2></div></div></div><p> The parallel mode STL algorithms are currently not exception-safe,
i.e. user-defined functors must not throw exceptions.
Also, the order of execution is not guaranteed for some functions, of course.
Therefore, user-defined functors should not have any concurrent side effects.
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</p><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="parallel_mode.design.intro"></a>Interface Basics</h3></div></div></div><p>
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</p><div class="sect2" title="Interface Basics"><div class="titlepage"><div><div><h3 class="title"><a id="parallel_mode.design.intro"></a>Interface Basics</h3></div></div></div><p>
All parallel algorithms are intended to have signatures that are
equivalent to the ISO C++ algorithms replaced. For instance, the
<code class="function">std::adjacent_find</code> function is declared as:
......@@ -36,13 +36,13 @@ function, if no parallel functions are deemed worthy), based on either
compile-time or run-time conditions.
</p><p> The available signature options are specific for the different
algorithms/algorithm classes.</p><p> The general view of overloads for the parallel algorithms look like this:
</p><div class="itemizedlist"><ul type="disc"><li><p>ISO C++ signature</p></li><li><p>ISO C++ signature + sequential_tag argument</p></li><li><p>ISO C++ signature + algorithm-specific tag type
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>ISO C++ signature</p></li><li class="listitem"><p>ISO C++ signature + sequential_tag argument</p></li><li class="listitem"><p>ISO C++ signature + algorithm-specific tag type
(several signatures)</p></li></ul></div><p> Please note that the implementation may use additional functions
(designated with the <code class="code">_switch</code> suffix) to dispatch from the
ISO C++ signature to the correct parallel version. Also, some of the
algorithms do not have support for run-time conditions, so the last
overload is therefore missing.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="parallel_mode.design.tuning"></a>Configuration and Tuning</h3></div></div></div><div class="sect3" lang="en" xml:lang="en"><div class="titlepage"><div><div><h4 class="title"><a id="parallel_mode.design.tuning.omp"></a>Setting up the OpenMP Environment</h4></div></div></div><p>
</p></div><div class="sect2" title="Configuration and Tuning"><div class="titlepage"><div><div><h3 class="title"><a id="parallel_mode.design.tuning"></a>Configuration and Tuning</h3></div></div></div><div class="sect3" title="Setting up the OpenMP Environment"><div class="titlepage"><div><div><h4 class="title"><a id="parallel_mode.design.tuning.omp"></a>Setting up the OpenMP Environment</h4></div></div></div><p>
Several aspects of the overall runtime environment can be manipulated
by standard OpenMP function calls.
</p><p>
......@@ -72,7 +72,7 @@ Other parts of the runtime environment able to be manipulated include
nested parallelism (<code class="function">omp_set_nested</code>), schedule kind
(<code class="function">omp_set_schedule</code>), and others. See the OpenMP
documentation for more information.
</p></div><div class="sect3" lang="en" xml:lang="en"><div class="titlepage"><div><div><h4 class="title"><a id="parallel_mode.design.tuning.compile"></a>Compile Time Switches</h4></div></div></div><p>
</p></div><div class="sect3" title="Compile Time Switches"><div class="titlepage"><div><div><h4 class="title"><a id="parallel_mode.design.tuning.compile"></a>Compile Time Switches</h4></div></div></div><p>
To force an algorithm to execute sequentially, even though parallelism
is switched on in general via the macro <code class="constant">_GLIBCXX_PARALLEL</code>,
add <code class="classname">__gnu_parallel::sequential_tag()</code> to the end
......@@ -126,7 +126,7 @@ several additional choices, namely
<code class="code">__gnu_parallel::balanced_quicksort_tag</code>.
Multiway mergesort comes with the two splitting strategies for multi-way
merging. The quicksort options cannot be used for <code class="code">stable_sort</code>.
</p></div><div class="sect3" lang="en" xml:lang="en"><div class="titlepage"><div><div><h4 class="title"><a id="parallel_mode.design.tuning.settings"></a>Run Time Settings and Defaults</h4></div></div></div><p>
</p></div><div class="sect3" title="Run Time Settings and Defaults"><div class="titlepage"><div><div><h4 class="title"><a id="parallel_mode.design.tuning.settings"></a>Run Time Settings and Defaults</h4></div></div></div><p>
The default parallelization strategy, the choice of specific algorithm
strategy, the minimum threshold limits for individual parallel
algorithms, and aspects of the underlying hardware can be specified as
......@@ -194,7 +194,7 @@ int main()
return 0;
}
</pre></div></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="parallel_mode.design.impl"></a>Implementation Namespaces</h3></div></div></div><p> One namespace contain versions of code that are always
</pre></div></div><div class="sect2" title="Implementation Namespaces"><div class="titlepage"><div><div><h3 class="title"><a id="parallel_mode.design.impl"></a>Implementation Namespaces</h3></div></div></div><p> One namespace contain versions of code that are always
explicitly sequential:
<code class="code">__gnu_serial</code>.
</p><p> Two namespaces contain the parallel mode:
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Testing</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; C++&#10; , &#10; library&#10; , &#10; parallel&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="parallel_mode.html" title="Chapter 31. Parallel Mode" /><link rel="prev" href="bk01pt12ch31s04.html" title="Design" /><link rel="next" href="profile_mode.html" title="Chapter 32. Profile Mode" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Testing</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt12ch31s04.html">Prev</a> </td><th width="60%" align="center">Chapter 31. Parallel Mode</th><td width="20%" align="right"> <a accesskey="n" href="profile_mode.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Testing"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.parallel_mode.test"></a>Testing</h2></div></div></div><p>
Both the normal conformance and regression tests and the
supplemental performance tests work.
</p><p>
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Extensions for Custom Containers</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; C++&#10; , &#10; library&#10; , &#10; profile&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="profile_mode.html" title="Chapter 32. Profile Mode" /><link rel="prev" href="bk01pt12ch32s02.html" title="Design" /><link rel="next" href="bk01pt12ch32s04.html" title="Empirical Cost Model" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Extensions for Custom Containers</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt12ch32s02.html">Prev</a> </td><th width="60%" align="center">Chapter 32. Profile Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch32s04.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Extensions for Custom Containers"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.profile_mode.api"></a>Extensions for Custom Containers</h2></div></div></div><p>
Many large projects use their own data structures instead of the ones in the
standard library. If these data structures are similar in functionality
to the standard library, they can be instrumented with the same hooks
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Empirical Cost Model</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; C++&#10; , &#10; library&#10; , &#10; profile&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="profile_mode.html" title="Chapter 32. Profile Mode" /><link rel="prev" href="bk01pt12ch32s03.html" title="Extensions for Custom Containers" /><link rel="next" href="bk01pt12ch32s05.html" title="Implementation Issues" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Empirical Cost Model</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt12ch32s03.html">Prev</a> </td><th width="60%" align="center">Chapter 32. Profile Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch32s05.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Empirical Cost Model"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.profile_mode.cost_model"></a>Empirical Cost Model</h2></div></div></div><p>
Currently, the cost model uses formulas with predefined relative weights
for alternative containers or container implementations. For instance,
iterating through a vector is X times faster than iterating through a list.
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Implementation Issues</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; C++&#10; , &#10; library&#10; , &#10; profile&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="profile_mode.html" title="Chapter 32. Profile Mode" /><link rel="prev" href="bk01pt12ch32s04.html" title="Empirical Cost Model" /><link rel="next" href="bk01pt12ch32s06.html" title="Developer Information" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Implementation Issues</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt12ch32s04.html">Prev</a> </td><th width="60%" align="center">Chapter 32. Profile Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch32s06.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Implementation Issues"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.profile_mode.implementation"></a>Implementation Issues</h2></div></div></div><div class="sect2" title="Stack Traces"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.stack"></a>Stack Traces</h3></div></div></div><p>
Accurate stack traces are needed during profiling since we group events by
call context and dynamic instance. Without accurate traces, diagnostics
may be hard to interpret. For instance, when giving advice to the user
......@@ -11,24 +11,24 @@
<code class="code">_GLIBCXX_PROFILE_STACK_DEPTH</code> can be set
to 0 if you are willing to give up call context information, or to a small
positive value to reduce run time overhead.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.symbols"></a>Symbolization of Instruction Addresses</h3></div></div></div><p>
</p></div><div class="sect2" title="Symbolization of Instruction Addresses"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.symbols"></a>Symbolization of Instruction Addresses</h3></div></div></div><p>
The profiling and analysis phases use only instruction addresses.
An external utility such as addr2line is needed to postprocess the result.
We do not plan to add symbolization support in the profile extension.
This would require access to symbol tables, debug information tables,
external programs or libraries and other system dependent information.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.concurrency"></a>Concurrency</h3></div></div></div><p>
</p></div><div class="sect2" title="Concurrency"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.concurrency"></a>Concurrency</h3></div></div></div><p>
Our current model is simplistic, but precise.
We cannot afford to approximate because some of our diagnostics require
precise matching of operations to container instance and call context.
During profiling, we keep a single information table per diagnostic.
There is a single lock per information table.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.stdlib-in-proflib"></a>Using the Standard Library in the Instrumentation Implementation</h3></div></div></div><p>
</p></div><div class="sect2" title="Using the Standard Library in the Instrumentation Implementation"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.stdlib-in-proflib"></a>Using the Standard Library in the Instrumentation Implementation</h3></div></div></div><p>
As much as we would like to avoid uses of stdlibc++ within our
instrumentation library, containers such as unordered_map are very
appealing. We plan to use them as long as they are named properly
to avoid ambiguity.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.malloc-hooks"></a>Malloc Hooks</h3></div></div></div><p>
</p></div><div class="sect2" title="Malloc Hooks"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.malloc-hooks"></a>Malloc Hooks</h3></div></div></div><p>
User applications/libraries can provide malloc hooks.
When the implementation of the malloc hooks uses stdlibc++, there can
be an infinite cycle between the profile mode instrumentation and the
......@@ -42,7 +42,7 @@
uses non-recursive locks.
XXX: A definitive solution to this problem would be for the profile extension
to use a custom allocator internally, and perhaps not to use libstdc++.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.construction-destruction"></a>Construction and Destruction of Global Objects</h3></div></div></div><p>
</p></div><div class="sect2" title="Construction and Destruction of Global Objects"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.implementation.construction-destruction"></a>Construction and Destruction of Global Objects</h3></div></div></div><p>
The profiling library state is initialized at the first call to a profiling
method. This allows us to record the construction of all global objects.
However, we cannot do the same at destruction time. The trace is written
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Developer Information</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; C++&#10; , &#10; library&#10; , &#10; profile&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="profile_mode.html" title="Chapter 32. Profile Mode" /><link rel="prev" href="bk01pt12ch32s05.html" title="Implementation Issues" /><link rel="next" href="bk01pt12ch32s07.html" title="Diagnostics" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Developer Information</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt12ch32s05.html">Prev</a> </td><th width="60%" align="center">Chapter 32. Profile Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch32s07.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Developer Information"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.profile_mode.developer"></a>Developer Information</h2></div></div></div><div class="sect2" title="Big Picture"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.developer.bigpic"></a>Big Picture</h3></div></div></div><p>The profile mode headers are included with
<code class="code">-D_GLIBCXX_PROFILE</code> through preprocessor directives in
<code class="code">include/std/*</code>.
</p><p>Instrumented implementations are provided in
......@@ -14,7 +14,7 @@
must ensure (1) that the call is guarded against reentrance and
(2) that the call can be turned off at compile time using a
<code class="code">-D_GLIBCXX_PROFILE_...</code> compiler option.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.developer.howto"></a>How To Add A Diagnostic</h3></div></div></div><p>Let's say the diagnostic name is "magic".
</p></div><div class="sect2" title="How To Add A Diagnostic"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.profile_mode.developer.howto"></a>How To Add A Diagnostic</h3></div></div></div><p>Let's say the diagnostic name is "magic".
</p><p>If you need to instrument a header not already under
<code class="code">include/profile/*</code>, first edit the corresponding header
under <code class="code">include/std/</code> and add a preprocessor directive such
......@@ -36,15 +36,15 @@
Hook names must start with <code class="code">__profcxx_</code>.
Make sure they transform
in no code with <code class="code">-D_NO_GLBICXX_PROFILE_MAGIC</code>.
Make sure all calls to any method in namespace <code class="code">__cxxprof_impl</code>
Make sure all calls to any method in namespace <code class="code">__gnu_profile</code>
is protected against reentrance using macro
<code class="code">_GLIBCXX_PROFILE_IMPL_REENTRANCE_GUARD</code>.
All names of methods in namespace <code class="code">__cxxprof_impl</code> called from
<code class="code">_GLIBCXX_PROFILE_REENTRANCE_GUARD</code>.
All names of methods in namespace <code class="code">__gnu_profile</code> called from
<code class="code">profiler.h</code> must start with <code class="code">__trace_magic_</code>.
</p><p>Add the implementation of the diagnostic.
</p><div class="itemizedlist"><ul type="disc"><li><p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
Create new file <code class="code">include/profile/impl/profiler_magic.h</code>.
</p></li><li><p>
</p></li><li class="listitem"><p>
Define class <code class="code">__magic_info: public __object_info_base</code>.
This is the representation of a line in the object table.
The <code class="code">__merge</code> method is used to aggregate information
......@@ -53,10 +53,10 @@
as a number of small operations, e.g., number of words copied.
The <code class="code">__write</code> method is used to produce the raw trace.
The <code class="code">__advice</code> method is used to produce the advice string.
</p></li><li><p>
</p></li><li class="listitem"><p>
Define class <code class="code">__magic_stack_info: public __magic_info</code>.
This defines the content of a line in the stack table.
</p></li><li><p>
</p></li><li class="listitem"><p>
Define class <code class="code">__trace_magic: public __trace_base&lt;__magic_info,
__magic_stack_info&gt;</code>.
It defines the content of the trace associated with this diagnostic.
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>HP/SGI</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="ext_containers.html" title="Chapter 34. Containers" /><link rel="prev" href="ext_containers.html" title="Chapter 34. Containers" /><link rel="next" href="bk01pt12ch34s03.html" title="Deprecated HP/SGI" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">HP/SGI</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_containers.html">Prev</a> </td><th width="60%" align="center">Chapter 34. Containers</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch34s03.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.containers.sgi"></a>HP/SGI</h2></div></div></div><p>
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>HP/SGI</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="ext_containers.html" title="Chapter 34. Containers" /><link rel="prev" href="ext_containers.html" title="Chapter 34. Containers" /><link rel="next" href="bk01pt12ch34s03.html" title="Deprecated HP/SGI" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">HP/SGI</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_containers.html">Prev</a> </td><th width="60%" align="center">Chapter 34. Containers</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch34s03.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="HP/SGI"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.containers.sgi"></a>HP/SGI</h2></div></div></div><p>
</p><p>A few extensions and nods to backwards-compatibility have been made with
containers. Those dealing with older SGI-style allocators are dealt with
elsewhere. The remaining ones all deal with bits:
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Deprecated HP/SGI</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="ext_containers.html" title="Chapter 34. Containers" /><link rel="prev" href="bk01pt12ch34s02.html" title="HP/SGI" /><link rel="next" href="ext_utilities.html" title="Chapter 35. Utilities" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Deprecated HP/SGI</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt12ch34s02.html">Prev</a> </td><th width="60%" align="center">Chapter 34. Containers</th><td width="20%" align="right"> <a accesskey="n" href="ext_utilities.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.containers.deprecated_sgi"></a>Deprecated HP/SGI</h2></div></div></div><p>
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Deprecated HP/SGI</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="ext_containers.html" title="Chapter 34. Containers" /><link rel="prev" href="bk01pt12ch34s02.html" title="HP/SGI" /><link rel="next" href="ext_utilities.html" title="Chapter 35. Utilities" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Deprecated HP/SGI</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt12ch34s02.html">Prev</a> </td><th width="60%" align="center">Chapter 34. Containers</th><td width="20%" align="right"> <a accesskey="n" href="ext_utilities.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Deprecated HP/SGI"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.containers.deprecated_sgi"></a>Deprecated HP/SGI</h2></div></div></div><p>
The SGI hashing classes <code class="classname">hash_set</code> and
<code class="classname">hash_set</code> have been deprecated by the
unordered_set, unordered_multiset, unordered_map,
......@@ -37,7 +37,7 @@
functions, as well as some extra constructors specifying the number
of buckets, etc.
</p><p>Why would you want to use a hashing class instead of the
“<span class="quote">normal</span>”implementations? Matt Austern writes:
<span class="quote">“<span class="quote">normal</span>”</span>implementations? Matt Austern writes:
</p><div class="blockquote"><blockquote class="blockquote"><p>
<span class="emphasis"><em>[W]ith a well chosen hash function, hash tables
generally provide much better average-case performance than
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Implementation</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="ext_concurrency.html" title="Chapter 41. Concurrency" /><link rel="prev" href="ext_concurrency.html" title="Chapter 41. Concurrency" /><link rel="next" href="bk01pt12ch41s03.html" title="Use" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Implementation</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_concurrency.html">Prev</a> </td><th width="60%" align="center">Chapter 41. Concurrency</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch41s03.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.concurrency.impl"></a>Implementation</h2></div></div></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.concurrency.impl.atomic_fallbacks"></a>Using Builtin Atomic Functions</h3></div></div></div><p>The functions for atomic operations described above are either
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Implementation</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="ext_concurrency.html" title="Chapter 41. Concurrency" /><link rel="prev" href="ext_concurrency.html" title="Chapter 41. Concurrency" /><link rel="next" href="bk01pt12ch41s03.html" title="Use" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Implementation</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ext_concurrency.html">Prev</a> </td><th width="60%" align="center">Chapter 41. Concurrency</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch41s03.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Implementation"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.concurrency.impl"></a>Implementation</h2></div></div></div><div class="sect2" title="Using Builtin Atomic Functions"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.concurrency.impl.atomic_fallbacks"></a>Using Builtin Atomic Functions</h3></div></div></div><p>The functions for atomic operations described above are either
implemented via compiler intrinsics (if the underlying host is
capable) or by library fallbacks.</p><p>Compiler intrinsics (builtins) are always preferred. However, as
the compiler builtins for atomics are not universally implemented,
......@@ -18,14 +18,14 @@ If builtins are possible for bool-sized integral types,
If builtins are possible for int-sized integral types,
<code class="code">_GLIBCXX_ATOMIC_BUILTINS_4</code> will be defined.
</p><p>For the following hosts, intrinsics are enabled by default.
</p><div class="itemizedlist"><ul type="disc"><li><p>alpha</p></li><li><p>ia64</p></li><li><p>powerpc</p></li><li><p>s390</p></li></ul></div><p>For others, some form of <code class="code">-march</code> may work. On
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>alpha</p></li><li class="listitem"><p>ia64</p></li><li class="listitem"><p>powerpc</p></li><li class="listitem"><p>s390</p></li></ul></div><p>For others, some form of <code class="code">-march</code> may work. On
non-ancient x86 hardware, <code class="code">-march=native</code> usually does the
trick.</p><p> For hosts without compiler intrinsics, but with capable
hardware, hand-crafted assembly is selected. This is the case for the following hosts:
</p><div class="itemizedlist"><ul type="disc"><li><p>cris</p></li><li><p>hppa</p></li><li><p>i386</p></li><li><p>i486</p></li><li><p>m48k</p></li><li><p>mips</p></li><li><p>sparc</p></li></ul></div><p>And for the rest, a simulated atomic lock via pthreads.
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>cris</p></li><li class="listitem"><p>hppa</p></li><li class="listitem"><p>i386</p></li><li class="listitem"><p>i486</p></li><li class="listitem"><p>m48k</p></li><li class="listitem"><p>mips</p></li><li class="listitem"><p>sparc</p></li></ul></div><p>And for the rest, a simulated atomic lock via pthreads.
</p><p> Detailed information about compiler intrinsics for atomic operations can be found in the GCC <a class="ulink" href="http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html" target="_top"> documentation</a>.
</p><p> More details on the library fallbacks from the porting <a class="link" href="internals.html#internals.thread_safety" title="Thread Safety">section</a>.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.concurrency.impl.thread"></a>Thread Abstraction</h3></div></div></div><p>A thin layer above IEEE 1003.1 (i.e. pthreads) is used to abstract
</p></div><div class="sect2" title="Thread Abstraction"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.concurrency.impl.thread"></a>Thread Abstraction</h3></div></div></div><p>A thin layer above IEEE 1003.1 (i.e. pthreads) is used to abstract
the thread interface for GCC. This layer is called "gthread," and is
comprised of one header file that wraps the host's default thread layer with
a POSIX-like interface.
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Use</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="ext_concurrency.html" title="Chapter 41. Concurrency" /><link rel="prev" href="bk01pt12ch41s02.html" title="Implementation" /><link rel="next" href="appendix_contributing.html" title="Appendix A.  Contributing" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Use</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt12ch41s02.html">Prev</a> </td><th width="60%" align="center">Chapter 41. Concurrency</th><td width="20%" align="right"> <a accesskey="n" href="appendix_contributing.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.concurrency.use"></a>Use</h2></div></div></div><p>Typical usage of the last two constructs is demonstrated as follows:
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Use</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="ext_concurrency.html" title="Chapter 41. Concurrency" /><link rel="prev" href="bk01pt12ch41s02.html" title="Implementation" /><link rel="next" href="appendix_contributing.html" title="Appendix A.  Contributing" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Use</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt12ch41s02.html">Prev</a> </td><th width="60%" align="center">Chapter 41. Concurrency</th><td width="20%" align="right"> <a accesskey="n" href="appendix_contributing.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Use"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.concurrency.use"></a>Use</h2></div></div></div><p>Typical usage of the last two constructs is demonstrated as follows:
</p><pre class="programlisting">
#include &lt;ext/concurrence.h&gt;
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title></title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="extensions.html" title="Part XII.  Extensions" /><link rel="prev" href="extensions.html" title="Part XII.  Extensions" /><link rel="next" href="ext_compile_checks.html" title="Chapter 29. Compile Time Checks" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="extensions.html">Prev</a> </td><th width="60%" align="center">Part XII. 
Extensions
</th><td width="20%" align="right"> <a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr></table><hr /></div><div class="preface" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="id646774"></a></h2></div></div></div><p>
</th><td width="20%" align="right"> <a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr></table><hr /></div><div class="preface"><div class="titlepage"><div><div><h2 class="title"><a id="id455799"></a></h2></div></div></div><p>
Here we will make an attempt at describing the non-Standard extensions to
the library. Some of these are from SGI's STL, some of these are GNU's,
and some just seemed to appear on the doorstep.
</p><p><span class="emphasis"><em>Before</em></span> you leap in and use any of these
extensions, be aware of two things:
</p><div class="orderedlist"><ol type="1"><li><p>
</p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><p>
Non-Standard means exactly that.
</p><p>
The behavior, and the very
......@@ -18,7 +18,7 @@ extensions, be aware of two things:
revision of C++.) Also, other platforms, other compilers, other
versions of g++ or libstdc++ may not recognize these names, or
treat them differently, or...
</p></li><li><p>
</p></li><li class="listitem"><p>
You should know how to access these headers properly.
</p></li></ol></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="extensions.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="extensions.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ext_compile_checks.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Part XII. 
Extensions
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Bugs</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="status.html" title="Chapter 1. Status" /><link rel="prev" href="license.html" title="License" /><link rel="next" href="setup.html" title="Chapter 2. Setup" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Bugs</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="license.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Status</th><td width="20%" align="right"> <a accesskey="n" href="setup.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.status.bugs"></a>Bugs</h2></div></div></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.bugs.impl"></a>Implementation Bugs</h3></div></div></div><p>
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Bugs</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="status.html" title="Chapter 1. Status" /><link rel="prev" href="license.html" title="License" /><link rel="next" href="setup.html" title="Chapter 2. Setup" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Bugs</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="license.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Status</th><td width="20%" align="right"> <a accesskey="n" href="setup.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Bugs"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.status.bugs"></a>Bugs</h2></div></div></div><div class="sect2" title="Implementation Bugs"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.bugs.impl"></a>Implementation Bugs</h3></div></div></div><p>
Information on known bugs, details on efforts to fix them, and
fixed bugs are all available as part of the GCC bug tracking
system, <a class="ulink" href="http://gcc.gnu.org/bugzilla" target="_top">bugzilla</a>, with the
category set to <code class="literal">libstdc++</code>.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.bugs.iso"></a>Standard Bugs</h3></div></div></div><p>
fixed bugs are all available as part of the <a class="ulink" href="http://gcc.gnu.org/bugs/" target="_top">GCC bug tracking system</a>,
with the category set to <code class="literal">libstdc++</code>.
</p></div><div class="sect2" title="Standard Bugs"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.bugs.iso"></a>Standard Bugs</h3></div></div></div><p>
Everybody's got issues. Even the C++ Standard Library.
</p><p>
The Library Working Group, or LWG, is the ISO subcommittee responsible
......@@ -248,7 +247,7 @@
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-defects.html#409" target="_top">409</a>:
<span class="emphasis"><em>Closing an fstream should clear the error state</em></span>
</span></dt><dd><p>Have <code class="code">open</code> clear the error flags.
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-active.html#431" target="_top">431</a>:
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-closed.html#431" target="_top">431</a>:
<span class="emphasis"><em>Swapping containers with unequal allocators</em></span>
</span></dt><dd><p>Implement Option 3, as per N1599.
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-defects.html#432" target="_top">432</a>:
......@@ -286,6 +285,11 @@
and Assignable?</em></span>
</span></dt><dd><p>In case of input_iterator/output_iterator rely on Assignability of
input_iterator' value_type.
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-active.html#539" target="_top">539</a>:
<span class="emphasis"><em>partial_sum and adjacent_difference should mention
requirements</em></span>
</span></dt><dd><p>We were almost doing the right thing, just use std::move
in adjacent_difference.
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-defects.html#541" target="_top">541</a>:
<span class="emphasis"><em>shared_ptr template assignment and void</em></span>
</span></dt><dd><p>Add an auto_ptr&lt;void&gt; specialization.
......@@ -301,7 +305,7 @@
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-defects.html#596" target="_top">596</a>:
<span class="emphasis"><em>27.8.1.3 Table 112 omits "a+" and "a+b" modes</em></span>
</span></dt><dd><p>Add the missing modes to fopen_mode.
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-active.html#630" target="_top">630</a>:
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-defects.html#630" target="_top">630</a>:
<span class="emphasis"><em>arrays of valarray</em></span>
</span></dt><dd><p>Implement the simple resolution.
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-defects.html#660" target="_top">660</a>:
......@@ -317,7 +321,7 @@
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-defects.html#695" target="_top">695</a>:
<span class="emphasis"><em>ctype&lt;char&gt;::classic_table() not accessible</em></span>
</span></dt><dd><p>Make the member functions table and classic_table public.
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-active.html#696" target="_top">696</a>:
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-defects.html#696" target="_top">696</a>:
<span class="emphasis"><em>istream::operator&gt;&gt;(int&amp;) broken</em></span>
</span></dt><dd><p>Implement the straightforward resolution.
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-defects.html#761" target="_top">761</a>:
......@@ -341,4 +345,8 @@
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-defects.html#853" target="_top">853</a>:
<span class="emphasis"><em>to_string needs updating with zero and one</em></span>
</span></dt><dd><p>Update / add the signatures.
</p></dd><dt><span class="term"><a class="ulink" href="../ext/lwg-active.html#865" target="_top">865</a>:
<span class="emphasis"><em>More algorithms that throw away information</em></span>
</span></dt><dd><p>The traditional HP / SGI return type and value is blessed
by the resolution of the DR.
</p></dd></dl></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="license.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="status.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="setup.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">License </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 2. Setup</td></tr></table></div></body></html>
libstdc++-v3/doc/html/manual/complex.html
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</p><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="numerics.complex.processing"></a>complex Processing</h2></div></div></div><p>
</th><td width="20%" align="right"> <a accesskey="n" href="generalized_numeric_operations.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 21. Complex"><div class="titlepage"><div><div><h2 class="title"><a id="manual.numerics.complex"></a>Chapter 21. Complex</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="complex.html#numerics.complex.processing">complex Processing</a></span></dt></dl></div><p>
</p><div class="sect1" title="complex Processing"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="numerics.complex.processing"></a>complex Processing</h2></div></div></div><p>
</p><p>Using <code class="code">complex&lt;&gt;</code> becomes even more comple- er, sorry,
<span class="emphasis"><em>complicated</em></span>, with the not-quite-gratuitously-incompatible
addition of complex types to the C language. David Tribble has
......
libstdc++-v3/doc/html/manual/configure.html
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Configure</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; configure&#10; , &#10; options&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="setup.html" title="Chapter 2. Setup" /><link rel="prev" href="setup.html" title="Chapter 2. Setup" /><link rel="next" href="make.html" title="Make" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Configure</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="setup.html">Prev</a> </td><th width="60%" align="center">Chapter 2. Setup</th><td width="20%" align="right"> <a accesskey="n" href="make.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Configure"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.setup.configure"></a>Configure</h2></div></div></div><p>
When configuring libstdc++, you'll have to configure the entire
<span class="emphasis"><em>gccsrcdir</em></span> directory. Consider using the
toplevel gcc configuration option
......
libstdc++-v3/doc/html/manual/containers.html
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</th><td width="20%" align="right"> <a accesskey="n" href="iterators.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 18. Interacting with C"><div class="titlepage"><div><div><h2 class="title"><a id="manual.containers.c"></a>Chapter 18. Interacting with C</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="containers_and_c.html#containers.c.vs_array">Containers vs. Arrays</a></span></dt></dl></div><div class="sect1" title="Containers vs. Arrays"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="containers.c.vs_array"></a>Containers vs. Arrays</h2></div></div></div><p>
You're writing some code and can't decide whether to use builtin
arrays or some kind of container. There are compelling reasons
to use one of the container classes, but you're afraid that
......@@ -13,7 +13,7 @@
</p><p>
If your code makes use of the standard algorithms, this isn't as
scary as it sounds. The algorithms don't know, nor care, about
the kind of “<span class="quote">container</span>” on which they work, since
the kind of <span class="quote">“<span class="quote">container</span>”</span> on which they work, since
the algorithms are only given endpoints to work with. For the
container classes, these are iterators (usually
<code class="code">begin()</code> and <code class="code">end()</code>, but not always).
......
libstdc++-v3/doc/html/manual/debug.html
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Debugging Support</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; C++&#10; , &#10; debug&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="using.html" title="Chapter 3. Using" /><link rel="prev" href="using_exceptions.html" title="Exceptions" /><link rel="next" href="support.html" title="Part II.  Support" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Debugging Support</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="using_exceptions.html">Prev</a> </td><th width="60%" align="center">Chapter 3. Using</th><td width="20%" align="right"> <a accesskey="n" href="support.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.using.debug"></a>Debugging Support</h2></div></div></div><p>
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Debugging Support</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; C++&#10; , &#10; debug&#10; " /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="using.html" title="Chapter 3. Using" /><link rel="prev" href="using_exceptions.html" title="Exceptions" /><link rel="next" href="support.html" title="Part II.  Support" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Debugging Support</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="using_exceptions.html">Prev</a> </td><th width="60%" align="center">Chapter 3. Using</th><td width="20%" align="right"> <a accesskey="n" href="support.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Debugging Support"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.using.debug"></a>Debugging Support</h2></div></div></div><p>
There are numerous things that can be done to improve the ease with
which C++ binaries are debugged when using the GNU tool chain. Here
are some of them.
</p><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="debug.compiler"></a>Using <span class="command"><strong>g++</strong></span></h3></div></div></div><p>
</p><div class="sect2" title="Using g++"><div class="titlepage"><div><div><h3 class="title"><a id="debug.compiler"></a>Using <span class="command"><strong>g++</strong></span></h3></div></div></div><p>
Compiler flags determine how debug information is transmitted
between compilation and debug or analysis tools.
</p><p>
......@@ -31,7 +31,7 @@
Many other options are available: please see <a class="ulink" href="http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html#Debugging%20Options" target="_top">"Options
for Debugging Your Program"</a> in Using the GNU Compiler
Collection (GCC) for a complete list.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="debug.req"></a>Debug Versions of Library Binary Files</h3></div></div></div><p>
</p></div><div class="sect2" title="Debug Versions of Library Binary Files"><div class="titlepage"><div><div><h3 class="title"><a id="debug.req"></a>Debug Versions of Library Binary Files</h3></div></div></div><p>
If you would like debug symbols in libstdc++, there are two ways to
build libstdc++ with debug flags. The first is to run make from the
toplevel in a freshly-configured tree with
......@@ -52,7 +52,7 @@
</pre><p>
This quick and dirty approach is often sufficient for quick
debugging tasks, when you cannot or don't want to recompile your
application to use the <a class="link" href="debug_mode.html" title="Chapter 30. Debug Mode">debug mode</a>.</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="debug.memory"></a>Memory Leak Hunting</h3></div></div></div><p>
application to use the <a class="link" href="debug_mode.html" title="Chapter 30. Debug Mode">debug mode</a>.</p></div><div class="sect2" title="Memory Leak Hunting"><div class="titlepage"><div><div><h3 class="title"><a id="debug.memory"></a>Memory Leak Hunting</h3></div></div></div><p>
There are various third party memory tracing and debug utilities
that can be used to provide detailed memory allocation information
about C++ code. An exhaustive list of tools is not going to be
......@@ -121,7 +121,7 @@
up the runtime environment, library, and test file, might be:
</p><pre class="programlisting">
valgrind -v --num-callers=20 --leak-check=yes --leak-resolution=high --show-reachable=yes a.out
</pre></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="debug.gdb"></a>Using <span class="command"><strong>gdb</strong></span></h3></div></div></div><p>
</pre></div><div class="sect2" title="Using gdb"><div class="titlepage"><div><div><h3 class="title"><a id="debug.gdb"></a>Using <span class="command"><strong>gdb</strong></span></h3></div></div></div><p>
</p><p>
Many options are available for gdb itself: please see <a class="ulink" href="http://sources.redhat.com/gdb/current/onlinedocs/gdb_13.html#SEC125" target="_top">
"GDB features for C++" </a> in the gdb documentation. Also
......@@ -174,16 +174,16 @@
on-line versions of the GDB user manual in GDB's homepage, at
<a class="ulink" href="http://sourceware.org/gdb/" target="_top"> "GDB: The GNU Project
Debugger" </a>.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="debug.exceptions"></a>Tracking uncaught exceptions</h3></div></div></div><p>
</p></div><div class="sect2" title="Tracking uncaught exceptions"><div class="titlepage"><div><div><h3 class="title"><a id="debug.exceptions"></a>Tracking uncaught exceptions</h3></div></div></div><p>
The <a class="link" href="verbose_termination.html" title="Verbose Terminate Handler">verbose
termination handler</a> gives information about uncaught
exceptions which are killing the program. It is described in the
linked-to page.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="debug.debug_mode"></a>Debug Mode</h3></div></div></div><p> The <a class="link" href="debug_mode.html" title="Chapter 30. Debug Mode">Debug Mode</a>
</p></div><div class="sect2" title="Debug Mode"><div class="titlepage"><div><div><h3 class="title"><a id="debug.debug_mode"></a>Debug Mode</h3></div></div></div><p> The <a class="link" href="debug_mode.html" title="Chapter 30. Debug Mode">Debug Mode</a>
has compile and run-time checks for many containers.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="debug.compile_time_checks"></a>Compile Time Checking</h3></div></div></div><p> The <a class="link" href="ext_compile_checks.html" title="Chapter 29. Compile Time Checks">Compile-Time
</p></div><div class="sect2" title="Compile Time Checking"><div class="titlepage"><div><div><h3 class="title"><a id="debug.compile_time_checks"></a>Compile Time Checking</h3></div></div></div><p> The <a class="link" href="ext_compile_checks.html" title="Chapter 29. Compile Time Checks">Compile-Time
Checks</a> Extension has compile-time checks for many algorithms.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="debug.profile_mode"></a>Profile-based Performance Analysis</h3></div></div></div><p> The <a class="link" href="profile_mode.html" title="Chapter 32. Profile Mode">Profile-based
</p></div><div class="sect2" title="Profile-based Performance Analysis"><div class="titlepage"><div><div><h3 class="title"><a id="debug.profile_mode"></a>Profile-based Performance Analysis</h3></div></div></div><p> The <a class="link" href="profile_mode.html" title="Chapter 32. Profile Mode">Profile-based
Performance Analysis</a> Extension has performance checks for many
algorithms.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="using_exceptions.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="using.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="support.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Exceptions </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> Part II. 
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</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch30s02.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 30. Debug Mode"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.debug_mode"></a>Chapter 30. Debug Mode</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="debug_mode.html#manual.ext.debug_mode.intro">Intro</a></span></dt><dt><span class="sect1"><a href="bk01pt12ch30s02.html">Semantics</a></span></dt><dt><span class="sect1"><a href="bk01pt12ch30s03.html">Using</a></span></dt><dd><dl><dt><span class="sect2"><a href="bk01pt12ch30s03.html#debug_mode.using.mode">Using the Debug Mode</a></span></dt><dt><span class="sect2"><a href="bk01pt12ch30s03.html#debug_mode.using.specific">Using a Specific Debug Container</a></span></dt></dl></dd><dt><span class="sect1"><a href="bk01pt12ch30s04.html">Design</a></span></dt><dd><dl><dt><span class="sect2"><a href="bk01pt12ch30s04.html#debug_mode.design.goals">Goals</a></span></dt><dt><span class="sect2"><a href="bk01pt12ch30s04.html#debug_mode.design.methods">Methods</a></span></dt><dt><span class="sect2"><a href="bk01pt12ch30s04.html#debug_mode.design.other">Other Implementations</a></span></dt></dl></dd></dl></div><div class="sect1" title="Intro"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.debug_mode.intro"></a>Intro</h2></div></div></div><p>
By default, libstdc++ is built with efficiency in mind, and
therefore performs little or no error checking that is not
required by the C++ standard. This means that programs that
......@@ -20,11 +20,11 @@
The libstdc++ debug mode performs checking for many areas of the
C++ standard, but the focus is on checking interactions among
standard iterators, containers, and algorithms, including:
</p><div class="itemizedlist"><ul type="disc"><li><p><span class="emphasis"><em>Safe iterators</em></span>: Iterators keep track of the
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><span class="emphasis"><em>Safe iterators</em></span>: Iterators keep track of the
container whose elements they reference, so errors such as
incrementing a past-the-end iterator or dereferencing an iterator
that points to a container that has been destructed are diagnosed
immediately.</p></li><li><p><span class="emphasis"><em>Algorithm preconditions</em></span>: Algorithms attempt to
immediately.</p></li><li class="listitem"><p><span class="emphasis"><em>Algorithm preconditions</em></span>: Algorithms attempt to
validate their input parameters to detect errors as early as
possible. For instance, the <code class="code">set_intersection</code>
algorithm requires that its iterator
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There are six flavors each of <code class="function">new</code> and
<code class="function">delete</code>, so make certain that you're using the right
ones. Here are quickie descriptions of <code class="function">new</code>:
</p><div class="itemizedlist"><ul type="disc"><li><p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
single object form, throwing a
<code class="classname">bad_alloc</code> on errors; this is what most
people are used to using
</p></li><li><p>
</p></li><li class="listitem"><p>
Single object "nothrow" form, returning NULL on errors
</p></li><li><p>
</p></li><li class="listitem"><p>
Array <code class="function">new</code>, throwing
<code class="classname">bad_alloc</code> on errors
</p></li><li><p>
</p></li><li class="listitem"><p>
Array nothrow <code class="function">new</code>, returning
<code class="constant">NULL</code> on errors
</p></li><li><p>
</p></li><li class="listitem"><p>
Placement <code class="function">new</code>, which does nothing (like
it's supposed to)
</p></li><li><p>
</p></li><li class="listitem"><p>
Placement array <code class="function">new</code>, which also does
nothing
</p></li></ul></div><p>
......@@ -36,7 +36,7 @@
NULL pointer! Nothing happens, by definition. That is not the
same thing as deleting a pointer twice.
</p><p>
By default, if one of the “<span class="quote">throwing <code class="function">new</code>s</span>” can't
By default, if one of the <span class="quote">“<span class="quote">throwing <code class="function">new</code>s</span>”</span> can't
allocate the memory requested, it tosses an instance of a
<code class="classname">bad_alloc</code> exception (or, technically, some class derived
from it). You can change this by writing your own function (called a
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</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch07s02.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 7. Exceptions"><div class="titlepage"><div><div><h2 class="title"><a id="manual.diagnostics.exceptions"></a>Chapter 7. Exceptions</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="exceptions.html#manual.diagnostics.exceptions.hierarchy">Exception Classes</a></span></dt><dt><span class="sect1"><a href="bk01pt03ch07s02.html">Adding Data to Exceptions</a></span></dt></dl></div><div class="sect1" title="Exception Classes"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.diagnostics.exceptions.hierarchy"></a>Exception Classes</h2></div></div></div><p>
All exception objects are defined in one of the standard header
files: <code class="filename">exception</code>,
<code class="filename">stdexcept</code>, <code class="filename">new</code>, and
......
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</th><td width="20%" align="right"> <a accesskey="n" href="ext_numerics.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 36. Algorithms"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.algorithms"></a>Chapter 36. Algorithms</h2></div></div></div><p>25.1.6 (count, count_if) is extended with two more versions of count
and count_if. The standard versions return their results. The
additional signatures return void, but take a final parameter by
reference to which they assign their results, e.g.,
......@@ -15,7 +15,7 @@
copy_n (_InputIter first, _Size count, _OutputIter result);</pre><p>which copies the first 'count' elements at 'first' into 'result'.
</p><p>25.3 (sorting 'n' heaps 'n' stuff) is extended with some helper
predicates. Look in the doxygen-generated pages for notes on these.
</p><div class="itemizedlist"><ul type="disc"><li><p><code class="code">is_heap</code> tests whether or not a range is a heap.</p></li><li><p><code class="code">is_sorted</code> tests whether or not a range is sorted in
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">is_heap</code> tests whether or not a range is a heap.</p></li><li class="listitem"><p><code class="code">is_sorted</code> tests whether or not a range is sorted in
nondescending order.</p></li></ul></div><p>25.3.8 (lexicographical_compare) is extended with
</p><pre class="programlisting">
lexicographical_compare_3way(_InputIter1 first1, _InputIter1 last1,
......
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</th><td width="20%" align="right"> <a accesskey="n" href="debug_mode.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 29. Compile Time Checks"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.compile_checks"></a>Chapter 29. Compile Time Checks</h2></div></div></div><p>
Also known as concept checking.
</p><p>In 1999, SGI added <span class="emphasis"><em>concept checkers</em></span> to their implementation
of the STL: code which checked the template parameters of
instantiated pieces of the STL, in order to insure that the parameters
being used met the requirements of the standard. For example,
the Standard requires that types passed as template parameters to
<code class="code">vector</code> be “<span class="quote">Assignable</span>” (which means what you think
<code class="code">vector</code> be <span class="quote">“<span class="quote">Assignable</span>”</span> (which means what you think
it means). The checking was done during compilation, and none of
the code was executed at runtime.
</p><p>Unfortunately, the size of the compiler files grew significantly
......
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</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt12ch41s02.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 41. Concurrency"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.concurrency"></a>Chapter 41. Concurrency</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="ext_concurrency.html#manual.ext.concurrency.design">Design</a></span></dt><dd><dl><dt><span class="sect2"><a href="ext_concurrency.html#manual.ext.concurrency.design.threads">Interface to Locks and Mutexes</a></span></dt><dt><span class="sect2"><a href="ext_concurrency.html#manual.ext.concurrency.design.atomics">Interface to Atomic Functions</a></span></dt></dl></dd><dt><span class="sect1"><a href="bk01pt12ch41s02.html">Implementation</a></span></dt><dd><dl><dt><span class="sect2"><a href="bk01pt12ch41s02.html#manual.ext.concurrency.impl.atomic_fallbacks">Using Builtin Atomic Functions</a></span></dt><dt><span class="sect2"><a href="bk01pt12ch41s02.html#manual.ext.concurrency.impl.thread">Thread Abstraction</a></span></dt></dl></dd><dt><span class="sect1"><a href="bk01pt12ch41s03.html">Use</a></span></dt></dl></div><div class="sect1" title="Design"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.concurrency.design"></a>Design</h2></div></div></div><div class="sect2" title="Interface to Locks and Mutexes"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.concurrency.design.threads"></a>Interface to Locks and Mutexes</h3></div></div></div><p>The file &lt;ext/concurrence.h&gt; contains all the higher-level
constructs for playing with threads. In contrast to the atomics layer,
the concurrence layer consists largely of types. All types are defined within <code class="code">namespace __gnu_cxx</code>.
</p><p>
......@@ -16,9 +16,9 @@ that support multiple threads.)
available locking
policies: <code class="code">_S_single</code>, <code class="code">_S_mutex</code>,
and <code class="code">_S_atomic</code>.
</p><div class="itemizedlist"><ul type="disc"><li><p><code class="code">_S_single</code></p><p>Indicates single-threaded code that does not need locking.
</p></li><li><p><code class="code">_S_mutex</code></p><p>Indicates multi-threaded code using thread-layer abstractions.
</p></li><li><p><code class="code">_S_atomic</code></p><p>Indicates multi-threaded code using atomic operations.
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">_S_single</code></p><p>Indicates single-threaded code that does not need locking.
</p></li><li class="listitem"><p><code class="code">_S_mutex</code></p><p>Indicates multi-threaded code using thread-layer abstractions.
</p></li><li class="listitem"><p><code class="code">_S_atomic</code></p><p>Indicates multi-threaded code using atomic operations.
</p></li></ul></div><p>The compile-time constant <code class="code">__default_lock_policy</code> is set
to one of the three values above, depending on characteristics of the
host environment and the current compilation flags.
......@@ -30,7 +30,7 @@ community. This version takes a <code class="code">__mutex</code> reference, and
locks it during construction of <code class="code">__scoped_locke</code> and
unlocks it during destruction. This is an efficient way of locking
critical sections, while retaining exception-safety.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.concurrency.design.atomics"></a>Interface to Atomic Functions</h3></div></div></div><p>
</p></div><div class="sect2" title="Interface to Atomic Functions"><div class="titlepage"><div><div><h3 class="title"><a id="manual.ext.concurrency.design.atomics"></a>Interface to Atomic Functions</h3></div></div></div><p>
Two functions and one type form the base of atomic support.
</p><p>The type <code class="code">_Atomic_word</code> is a signed integral type
supporting atomic operations.
......@@ -44,12 +44,12 @@ void
__atomic_add_dispatch(volatile _Atomic_word*, int);
</pre><p>Both of these functions are declared in the header file
&lt;ext/atomicity.h&gt;, and are in <code class="code">namespace __gnu_cxx</code>.
</p><div class="itemizedlist"><ul type="disc"><li><p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
<code class="code">
__exchange_and_add_dispatch
</code>
</p><p>Adds the second argument's value to the first argument. Returns the old value.
</p></li><li><p>
</p></li><li class="listitem"><p>
<code class="code">
__atomic_add_dispatch
</code>
......@@ -63,11 +63,11 @@ __exchange_and_add_dispatch
</code>
</p><p>
Calls through to either of:
</p><div class="itemizedlist"><ul type="disc"><li><p><code class="code">__exchange_and_add</code>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">__exchange_and_add</code>
</p><p>Multi-thread version. Inlined if compiler-generated builtin atomics
can be used, otherwise resolved at link time to a non-builtin code
sequence.
</p></li><li><p><code class="code">__exchange_and_add_single</code>
</p></li><li class="listitem"><p><code class="code">__exchange_and_add_single</code>
</p><p>Single threaded version. Inlined.</p></li></ul></div><p>However, only <code class="code">__exchange_and_add_dispatch</code>
and <code class="code">__atomic_add_dispatch</code> should be used. These functions
can be used in a portable manner, regardless of the specific
......
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Transforming C++ ABI identifiers (like RTTI symbols) into the
original C++ source identifiers is called
“<span class="quote">demangling.</span>”
<span class="quote">“<span class="quote">demangling.</span>”</span>
</p><p>
If you have read the <a class="ulink" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/namespaceabi.html" target="_top">source
documentation for <code class="code">namespace abi</code></a> then you are
......
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Extensions allowing <code class="code">filebuf</code>s to be constructed from
"C" types like FILE*s and file descriptors.
</p><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.io.filebuf_derived"></a>Derived filebufs</h2></div></div></div><p>The v2 library included non-standard extensions to construct
</p><div class="sect1" title="Derived filebufs"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.io.filebuf_derived"></a>Derived filebufs</h2></div></div></div><p>The v2 library included non-standard extensions to construct
<code class="code">std::filebuf</code>s from C stdio types such as
<code class="code">FILE*</code>s and POSIX file descriptors.
Today the recommended way to use stdio types with libstdc++
IOStreams is via the <code class="code">stdio_filebuf</code> class (see below),
but earlier releases provided slightly different mechanisms.
</p><div class="itemizedlist"><ul type="disc"><li><p>3.0.x <code class="code">filebuf</code>s have another ctor with this signature:
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>3.0.x <code class="code">filebuf</code>s have another ctor with this signature:
<code class="code">basic_filebuf(__c_file_type*, ios_base::openmode, int_type);
</code>
This comes in very handy in a number of places, such as
attaching Unix sockets, pipes, and anything else which uses file
descriptors, into the IOStream buffering classes. The three
arguments are as follows:
</p><div class="itemizedlist"><ul type="circle"><li><p><code class="code">__c_file_type* F </code>
</p><div class="itemizedlist"><ul class="itemizedlist" type="circle"><li class="listitem"><p><code class="code">__c_file_type* F </code>
// the __c_file_type typedef usually boils down to stdio's FILE
</p></li><li><p><code class="code">ios_base::openmode M </code>
</p></li><li class="listitem"><p><code class="code">ios_base::openmode M </code>
// same as all the other uses of openmode
</p></li><li><p><code class="code">int_type B </code>
</p></li><li class="listitem"><p><code class="code">int_type B </code>
// buffer size, defaults to BUFSIZ if not specified
</p></li></ul></div><p>
For those wanting to use file descriptors instead of FILE*'s, I
invite you to contemplate the mysteries of C's <code class="code">fdopen()</code>.
</p></li><li><p>In library snapshot 3.0.95 and later, <code class="code">filebuf</code>s bring
</p></li><li class="listitem"><p>In library snapshot 3.0.95 and later, <code class="code">filebuf</code>s bring
back an old extension: the <code class="code">fd()</code> member function. The
integer returned from this function can be used for whatever file
descriptors can be used for on your platform. Naturally, the
library cannot track what you do on your own with a file descriptor,
so if you perform any I/O directly, don't expect the library to be
aware of it.
</p></li><li><p>Beginning with 3.1, the extra <code class="code">filebuf</code> constructor and
</p></li><li class="listitem"><p>Beginning with 3.1, the extra <code class="code">filebuf</code> constructor and
the <code class="code">fd()</code> function were removed from the standard
filebuf. Instead, <code class="code">&lt;ext/stdio_filebuf.h&gt;</code> contains
a derived class called
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</th><td width="20%" align="right"> <a accesskey="n" href="ext_io.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.iterators"></a>Chapter 38. Iterators</h2></div></div></div><p>24.3.2 describes <code class="code">struct iterator</code>, which didn't exist in the
</th><td width="20%" align="right"> <a accesskey="n" href="ext_io.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 38. Iterators"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.iterators"></a>Chapter 38. Iterators</h2></div></div></div><p>24.3.2 describes <code class="code">struct iterator</code>, which didn't exist in the
original HP STL implementation (the language wasn't rich enough at the
time). For backwards compatibility, base classes are provided which
declare the same nested typedefs:
</p><div class="itemizedlist"><ul type="disc"><li><p>input_iterator</p></li><li><p>output_iterator</p></li><li><p>forward_iterator</p></li><li><p>bidirectional_iterator</p></li><li><p>random_access_iterator</p></li></ul></div><p>24.3.4 describes iterator operation <code class="code">distance</code>, which takes
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>input_iterator</p></li><li class="listitem"><p>output_iterator</p></li><li class="listitem"><p>forward_iterator</p></li><li class="listitem"><p>bidirectional_iterator</p></li><li class="listitem"><p>random_access_iterator</p></li></ul></div><p>24.3.4 describes iterator operation <code class="code">distance</code>, which takes
two iterators and returns a result. It is extended by another signature
which takes two iterators and a reference to a result. The result is
modified, and the function returns nothing.
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</th><td width="20%" align="right"> <a accesskey="n" href="ext_iterators.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.numerics"></a>Chapter 37. Numerics</h2></div></div></div><p>26.4, the generalized numeric operations such as accumulate, are extended
</th><td width="20%" align="right"> <a accesskey="n" href="ext_iterators.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 37. Numerics"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.numerics"></a>Chapter 37. Numerics</h2></div></div></div><p>26.4, the generalized numeric operations such as accumulate, are extended
with the following functions:
</p><pre class="programlisting">
power (x, n);
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</th><td width="20%" align="right"> <a accesskey="n" href="ext_algorithms.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 35. Utilities"><div class="titlepage"><div><div><h2 class="title"><a id="manual.ext.util"></a>Chapter 35. Utilities</h2></div></div></div><p>
The &lt;functional&gt; header contains many additional functors
and helper functions, extending section 20.3. They are
implemented in the file stl_function.h:
</p><div class="itemizedlist"><ul type="disc"><li><p><code class="code">identity_element</code> for addition and multiplication. *
</p></li><li><p>The functor <code class="code">identity</code>, whose <code class="code">operator()</code>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">identity_element</code> for addition and multiplication. *
</p></li><li class="listitem"><p>The functor <code class="code">identity</code>, whose <code class="code">operator()</code>
returns the argument unchanged. *
</p></li><li><p>Composition functors <code class="code">unary_function</code> and
</p></li><li class="listitem"><p>Composition functors <code class="code">unary_function</code> and
<code class="code">binary_function</code>, and their helpers <code class="code">compose1</code>
and <code class="code">compose2</code>. *
</p></li><li><p><code class="code">select1st</code> and <code class="code">select2nd</code>, to strip pairs. *
</p></li><li><p><code class="code">project1st</code> and <code class="code">project2nd</code>. * </p></li><li><p>A set of functors/functions which always return the same result. They
</p></li><li class="listitem"><p><code class="code">select1st</code> and <code class="code">select2nd</code>, to strip pairs. *
</p></li><li class="listitem"><p><code class="code">project1st</code> and <code class="code">project2nd</code>. * </p></li><li class="listitem"><p>A set of functors/functions which always return the same result. They
are <code class="code">constant_void_fun</code>, <code class="code">constant_binary_fun</code>,
<code class="code">constant_unary_fun</code>, <code class="code">constant0</code>,
<code class="code">constant1</code>, and <code class="code">constant2</code>. * </p></li><li><p>The class <code class="code">subtractive_rng</code>. * </p></li><li><p>mem_fun adaptor helpers <code class="code">mem_fun1</code> and
<code class="code">constant1</code>, and <code class="code">constant2</code>. * </p></li><li class="listitem"><p>The class <code class="code">subtractive_rng</code>. * </p></li><li class="listitem"><p>mem_fun adaptor helpers <code class="code">mem_fun1</code> and
<code class="code">mem_fun1_ref</code> are provided for backwards compatibility. </p></li></ul></div><p>
20.4.1 can use several different allocators; they are described on the
main extensions page.
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</p><p>So you want to copy a file quickly and easily, and most important,
completely portably. And since this is C++, you have an open
ifstream (call it IN) and an open ofstream (call it OUT):
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</th><td width="20%" align="right"> <a accesskey="n" href="pairs.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 9. Functors"><div class="titlepage"><div><div><h2 class="title"><a id="manual.util.functors"></a>Chapter 9. Functors</h2></div></div></div><p>If you don't know what functors are, you're not alone. Many people
get slightly the wrong idea. In the interest of not reinventing
the wheel, we will refer you to the introduction to the functor
concept written by SGI as part of their STL, in
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</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt02ch04s02.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 4. Types"><div class="titlepage"><div><div><h2 class="title"><a id="manual.support.types"></a>Chapter 4. Types</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="fundamental_types.html#manual.support.types.fundamental">Fundamental Types</a></span></dt><dt><span class="sect1"><a href="bk01pt02ch04s02.html">Numeric Properties</a></span></dt><dt><span class="sect1"><a href="bk01pt02ch04s03.html">NULL</a></span></dt></dl></div><div class="sect1" title="Fundamental Types"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.support.types.fundamental"></a>Fundamental Types</h2></div></div></div><p>
C++ has the following builtin types:
</p><div class="itemizedlist"><ul type="disc"><li><p>
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
char
</p></li><li><p>
</p></li><li class="listitem"><p>
signed char
</p></li><li><p>
</p></li><li class="listitem"><p>
unsigned char
</p></li><li><p>
</p></li><li class="listitem"><p>
signed short
</p></li><li><p>
</p></li><li class="listitem"><p>
signed int
</p></li><li><p>
</p></li><li class="listitem"><p>
signed long
</p></li><li><p>
</p></li><li class="listitem"><p>
unsigned short
</p></li><li><p>
</p></li><li class="listitem"><p>
unsigned int
</p></li><li><p>
</p></li><li class="listitem"><p>
unsigned long
</p></li><li><p>
</p></li><li class="listitem"><p>
bool
</p></li><li><p>
</p></li><li class="listitem"><p>
wchar_t
</p></li><li><p>
</p></li><li class="listitem"><p>
float
</p></li><li><p>
</p></li><li class="listitem"><p>
double
</p></li><li><p>
</p></li><li class="listitem"><p>
long double
</p></li></ul></div><p>
These fundamental types are always available, without having to
......
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Numerics
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</th><td width="20%" align="right"> <a accesskey="n" href="numerics_and_c.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 22. Generalized Operations"><div class="titlepage"><div><div><h2 class="title"><a id="manual.numerics.generalized_ops"></a>Chapter 22. Generalized Operations</h2></div></div></div><p>
</p><p>There are four generalized functions in the &lt;numeric&gt; header
that follow the same conventions as those in &lt;algorithm&gt;. Each
of them is overloaded: one signature for common default operations,
and a second for fully general operations. Their names are
self-explanatory to anyone who works with numerics on a regular basis:
</p><div class="itemizedlist"><ul type="disc"><li><p><code class="code">accumulate</code></p></li><li><p><code class="code">inner_product</code></p></li><li><p><code class="code">partial_sum</code></p></li><li><p><code class="code">adjacent_difference</code></p></li></ul></div><p>Here is a simple example of the two forms of <code class="code">accumulate</code>.
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><code class="code">accumulate</code></p></li><li class="listitem"><p><code class="code">inner_product</code></p></li><li class="listitem"><p><code class="code">partial_sum</code></p></li><li class="listitem"><p><code class="code">adjacent_difference</code></p></li></ul></div><p>Here is a simple example of the two forms of <code class="code">accumulate</code>.
</p><pre class="programlisting">
int ar[50];
int someval = somefunction();
......
libstdc++-v3/doc/html/manual/internals.html
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</th><td width="20%" align="right"> <a accesskey="n" href="test.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="appendix.porting.internals"></a>Porting to New Hardware or Operating Systems</h2></div></div></div><p>
</th><td width="20%" align="right"> <a accesskey="n" href="test.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Porting to New Hardware or Operating Systems"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="appendix.porting.internals"></a>Porting to New Hardware or Operating Systems</h2></div></div></div><p>
</p><p>This document explains how to port libstdc++ (the GNU C++ library) to
a new target.
</p><p>In order to make the GNU C++ library (libstdc++) work with a new
......@@ -20,7 +20,7 @@ works. It is difficult to test the C++ compiler without a working
library, but you should at least try some minimal test cases.
</p><p>(Note that what we think of as a "target," the library refers to as
a "host." The comment at the top of <code class="code">configure.ac</code> explains why.)
</p><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="internals.os"></a>Operating System</h3></div></div></div><p>If you are porting to a new operating system (as opposed to a new chip
</p><div class="sect2" title="Operating System"><div class="titlepage"><div><div><h3 class="title"><a id="internals.os"></a>Operating System</h3></div></div></div><p>If you are porting to a new operating system (as opposed to a new chip
using an existing operating system), you will need to create a new
directory in the <code class="code">config/os</code> hierarchy. For example, the IRIX
configuration files are all in <code class="code">config/os/irix</code>. There is no set
......@@ -99,7 +99,7 @@ this:
#endif
</pre><p>We recommend copying an existing <code class="code">os_defines.h</code> to use as a
starting point.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="internals.cpu"></a>CPU</h3></div></div></div><p>If you are porting to a new chip (as opposed to a new operating system
</p></div><div class="sect2" title="CPU"><div class="titlepage"><div><div><h3 class="title"><a id="internals.cpu"></a>CPU</h3></div></div></div><p>If you are porting to a new chip (as opposed to a new operating system
running on an existing chip), you will need to create a new directory in the
<code class="code">config/cpu</code> hierarchy. Much like the <a class="link" href="internals.html#internals.os" title="Operating System">Operating system</a> setup,
there are no strict rules on how to organize the CPU configuration
......@@ -117,7 +117,7 @@ example, <code class="code">alpha</code>, <code class="code">alphaev5</code>, an
</p><p>The <code class="code">cpu_include_dir</code> sets default locations for the files controlling
<a class="link" href="internals.html#internals.thread_safety" title="Thread Safety">Thread safety</a> and <a class="link" href="internals.html#internals.numeric_limits" title="Numeric Limits">Numeric limits</a>, if the defaults are not
appropriate for your chip.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="internals.char_types"></a>Character Types</h3></div></div></div><p>The library requires that you provide three header files to implement
</p></div><div class="sect2" title="Character Types"><div class="titlepage"><div><div><h3 class="title"><a id="internals.char_types"></a>Character Types</h3></div></div></div><p>The library requires that you provide three header files to implement
character classification, analogous to that provided by the C libraries
<code class="code">&lt;ctype.h&gt;</code> header. You can model these on the files provided in
<code class="code">config/os/generic</code>. However, these files will almost
......@@ -279,7 +279,7 @@ from <code class="code">__low</code> up until <code class="code">__high</code> i
++__low;
return __low;
}
</pre></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="internals.thread_safety"></a>Thread Safety</h3></div></div></div><p>The C++ library string functionality requires a couple of atomic
</pre></div><div class="sect2" title="Thread Safety"><div class="titlepage"><div><div><h3 class="title"><a id="internals.thread_safety"></a>Thread Safety</h3></div></div></div><p>The C++ library string functionality requires a couple of atomic
operations to provide thread-safety. If you don't take any special
action, the library will use stub versions of these functions that are
not thread-safe. They will work fine, unless your applications are
......@@ -334,7 +334,7 @@ must be equivalent to those provided here, but using atomic operations:
{
*__mem += __val;
}
</pre></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="internals.numeric_limits"></a>Numeric Limits</h3></div></div></div><p>The C++ library requires information about the fundamental data types,
</pre></div><div class="sect2" title="Numeric Limits"><div class="titlepage"><div><div><h3 class="title"><a id="internals.numeric_limits"></a>Numeric Limits</h3></div></div></div><p>The C++ library requires information about the fundamental data types,
such as the minimum and maximum representable values of each type.
You can define each of these values individually, but it is usually
easiest just to indicate how many bits are used in each of the data
......@@ -346,7 +346,7 @@ same values, you can provide a CPU-specific file instead so that you
do not have to provide the same definitions for each operating system.
To take that approach, create a new file called <code class="code">cpu_limits.h</code> in
your CPU configuration directory (see <a class="link" href="internals.html#internals.cpu" title="CPU">CPU</a>).
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="internals.libtool"></a>Libtool</h3></div></div></div><p>The C++ library is compiled, archived and linked with libtool.
</p></div><div class="sect2" title="Libtool"><div class="titlepage"><div><div><h3 class="title"><a id="internals.libtool"></a>Libtool</h3></div></div></div><p>The C++ library is compiled, archived and linked with libtool.
Explaining the full workings of libtool is beyond the scope of this
document, but there are a few, particular bits that are necessary for
porting.
......
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</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt11ch28s02.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 28. Interacting with C"><div class="titlepage"><div><div><h2 class="title"><a id="manual.io.c"></a>Chapter 28. Interacting with C</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="io_and_c.html#manual.io.c.FILE">Using FILE* and file descriptors</a></span></dt><dt><span class="sect1"><a href="bk01pt11ch28s02.html">Performance</a></span></dt></dl></div><div class="sect1" title="Using FILE* and file descriptors"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.io.c.FILE"></a>Using FILE* and file descriptors</h2></div></div></div><p>
See the <a class="link" href="ext_io.html" title="Chapter 39. Input and Output">extensions</a> for using
<span class="type">FILE</span> and <span class="type">file descriptors</span> with
<code class="classname">ofstream</code> and
......
libstdc++-v3/doc/html/manual/iostream_objects.html
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Input and Output
</th><td width="20%" align="right"> <a accesskey="n" href="streambufs.html">Next</a></td></tr></table><hr /></div><div class="chapter" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title"><a id="manual.io.objects"></a>Chapter 24. Iostream Objects</h2></div></div></div><p>To minimize the time you have to wait on the compiler, it's good to
</th><td width="20%" align="right"> <a accesskey="n" href="streambufs.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 24. Iostream Objects"><div class="titlepage"><div><div><h2 class="title"><a id="manual.io.objects"></a>Chapter 24. Iostream Objects</h2></div></div></div><p>To minimize the time you have to wait on the compiler, it's good to
only include the headers you really need. Many people simply include
&lt;iostream&gt; when they don't need to -- and that can <span class="emphasis"><em>penalize
your runtime as well.</em></span> Here are some tips on which header to use
......
libstdc++-v3/doc/html/manual/iterators.html
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Iterators
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</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bitset.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt08ch19.html">Next</a></td></tr></table><hr /></div><div class="part" title="Part VIII.  Iterators"><div class="titlepage"><div><div><h1 class="title"><a id="manual.iterators"></a>Part VIII. 
Iterators
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</h1></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="chapter"><a href="bk01pt08ch19.html">19. Predefined</a></span></dt><dd><dl><dt><span class="sect1"><a href="bk01pt08ch19.html#iterators.predefined.vs_pointers">Iterators vs. Pointers</a></span></dt><dt><span class="sect1"><a href="bk01pt08ch19s02.html">One Past the End</a></span></dt></dl></dd></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bitset.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="spine.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt08ch19.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">bitset </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 19. Predefined</td></tr></table></div></body></html>
libstdc++-v3/doc/html/manual/license.html
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>License</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="status.html" title="Chapter 1. Status" /><link rel="prev" href="status.html" title="Chapter 1. Status" /><link rel="next" href="bugs.html" title="Bugs" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">License</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="status.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Status</th><td width="20%" align="right"> <a accesskey="n" href="bugs.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.status.license"></a>License</h2></div></div></div><p>
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>License</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="status.html" title="Chapter 1. Status" /><link rel="prev" href="status.html" title="Chapter 1. Status" /><link rel="next" href="bugs.html" title="Bugs" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">License</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="status.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Status</th><td width="20%" align="right"> <a accesskey="n" href="bugs.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="License"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.status.license"></a>License</h2></div></div></div><p>
There are two licenses affecting GNU libstdc++: one for the code,
and one for the documentation.
</p><p>
There is a license section in the FAQ regarding common <a class="link" href="../faq.html#faq.license" title="License">questions</a>. If you have more
questions, ask the FSF or the <a class="ulink" href="http://gcc.gnu.org/lists.html" target="_top">gcc mailing list</a>.
</p><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.license.gpl"></a>The Code: GPL</h3></div></div></div><p>
</p><div class="sect2" title="The Code: GPL"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.license.gpl"></a>The Code: GPL</h3></div></div></div><p>
The source code is distributed under the <a class="link" href="appendix_gpl.html" title="Appendix D.  GNU General Public License version 3">GNU General Public License version 3</a>,
with the addition under section 7 of an exception described in
the “<span class="quote">GCC Runtime Library Exception, version 3.1</span>”
the <span class="quote">“<span class="quote">GCC Runtime Library Exception, version 3.1</span>”</span>
as follows (or see the file COPYING.RUNTIME):
</p><div class="literallayout"><p><br />
GCC RUNTIME LIBRARY EXCEPTION<br />
......@@ -87,7 +87,7 @@ requirements of the license of GCC.<br />
    </p></div><p>
Hopefully that text is self-explanatory. If it isn't, you need to speak
to your lawyer, or the Free Software Foundation.
</p></div><div class="sect2" lang="en" xml:lang="en"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.license.fdl"></a>The Documentation: GPL, FDL</h3></div></div></div><p>
</p></div><div class="sect2" title="The Documentation: GPL, FDL"><div class="titlepage"><div><div><h3 class="title"><a id="manual.intro.status.license.fdl"></a>The Documentation: GPL, FDL</h3></div></div></div><p>
The documentation shipped with the library and made available over
the web, excluding the pages generated from source comments, are
copyrighted by the Free Software Foundation, and placed under the
......
libstdc++-v3/doc/html/manual/localization.html
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Localization
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt05ch13s06.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library</th><td width="20%" align="right"> <a accesskey="n" href="locales.html">Next</a></td></tr></table><hr /></div><div class="part" lang="en" xml:lang="en"><div class="titlepage"><div><div><h1 class="title"><a id="manual.localization"></a>Part VI. 
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Localization
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libstdc++-v3/doc/html/manual/make.html
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Make</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="setup.html" title="Chapter 2. Setup" /><link rel="prev" href="configure.html" title="Configure" /><link rel="next" href="using.html" title="Chapter 3. Using" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Make</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="configure.html">Prev</a> </td><th width="60%" align="center">Chapter 2. Setup</th><td width="20%" align="right"> <a accesskey="n" href="using.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Make"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.setup.make"></a>Make</h2></div></div></div><p>If you have never done this before, you should read the basic
<a class="ulink" href="http://gcc.gnu.org/install/" target="_top">GCC Installation
Instructions</a> first. Read <span class="emphasis"><em>all of them</em></span>.
<span class="emphasis"><em>Twice.</em></span>
......
libstdc++-v3/doc/html/manual/numerics.html
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Part X.  Numerics</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="spine.html" title="The GNU C++ Library" /><link rel="prev" href="bk01pt09ch20.html" title="Chapter 20. Mutating" /><link rel="next" href="complex.html" title="Chapter 21. Complex" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Part X. 
Numerics
</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt09ch20.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library</th><td width="20%" align="right"> <a accesskey="n" href="complex.html">Next</a></td></tr></table><hr /></div><div class="part" lang="en" xml:lang="en"><div class="titlepage"><div><div><h1 class="title"><a id="manual.numerics"></a>Part X. 
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Numerics
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Numerics
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is that it is defined to be free of pointer aliasing, an assumption
that C89 is not allowed to make, and neither is C++98. C99 adds a new
keyword, <code class="code">restrict</code>, to apply to individual pointers. The
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Utilities
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</th><td width="20%" align="right"> <a accesskey="n" href="memory.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 10. Pairs"><div class="titlepage"><div><div><h2 class="title"><a id="manual.util.pairs"></a>Chapter 10. Pairs</h2></div></div></div><p>The <code class="code">pair&lt;T1,T2&gt;</code> is a simple and handy way to
carry around a pair of objects. One is of type T1, and another of
type T2; they may be the same type, but you don't get anything
extra if they are. The two members can be accessed directly, as
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