testsuite_hooks.h (__set_testsuite_memlimit): Retrieve current limits before setting.

	* testsuite/testsuite_hooks.h (__set_testsuite_memlimit):
	Retrieve current limits before setting.

From-SVN: r53490

libstdc++-v3/ChangeLog

+2002-05-15  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
+
+	* testsuite/testsuite_hooks.h (__set_testsuite_memlimit):
+	Retrieve current limits before setting.
+
 2002-05-15  Benjamin Kosnik  <bkoz@redhat.com>
 
 	PR libstdc++/6518

libstdc++-v3/testsuite/testsuite_hooks.h

@@ -81,25 +81,33 @@ void
 __set_testsuite_memlimit(float __size = MEMLIMIT_MB)
 {
     struct rlimit r;
-    r.rlim_cur = (rlim_t)(__size * 1048576);
+    rlim_t limit = (rlim_t)(__size * 1048576);
 
     // Heap size, seems to be common.
 #if _GLIBCPP_HAVE_MEMLIMIT_DATA
+    getrlimit(RLIMIT_DATA, &r);
+    r.rlim_cur = limit;
     setrlimit(RLIMIT_DATA, &r);
 #endif
 
     // Resident set size.
 #if _GLIBCPP_HAVE_MEMLIMIT_RSS
+    getrlimit(RLIMIT_RSS, &r);
+    r.rlim_cur = limit;
     setrlimit(RLIMIT_RSS, &r);
 #endif
 
     // Mapped memory (brk + mmap).
 #if _GLIBCPP_HAVE_MEMLIMIT_VMEM
+    getrlimit(RLIMIT_VMEM, &r);
+    r.rlim_cur = limit;
     setrlimit(RLIMIT_VMEM, &r);
 #endif
 
     // Virtual memory.
 #if _GLIBCPP_HAVE_MEMLIMIT_AS
+    getrlimit(RLIMIT_AS, &r);
+    r.rlim_cur = limit;
     setrlimit(RLIMIT_AS, &r);
 #endif
 }