plugin.h (invoke_plugin_callbacks): New inline function.

2010-04-29  Brian Hackett   <bhackett1024@gmail.com>

	* plugin.h (invoke_plugin_callbacks): New inline function.
	* plugin.c (flag_plugin_added): New global flag.
	(add_new_plugin): Initialize above flag.
	(invoke_plugin_callbacks): Rename to ...
	(invoke_plugin_callbacks_full): ... this.

From-SVN: r158896

gcc/ChangeLog

+2010-04-29  Brian Hackett   <bhackett1024@gmail.com>
+
+	* plugin.h (invoke_plugin_callbacks): New inline function.
+	* plugin.c (flag_plugin_added): New global flag.
+	(add_new_plugin): Initialize above flag.
+	(invoke_plugin_callbacks): Rename to ...
+	(invoke_plugin_callbacks_full): ... this.
+
 2010-04-28  Jan Hubicka  <jh@suse.cz>
 
 	* lto-symtab.c (lto_symtab_entry_def) Add vnode.

gcc/plugin.c

@@ -86,6 +86,8 @@ struct callback_info
 static struct callback_info *plugin_callbacks_init[PLUGIN_EVENT_FIRST_DYNAMIC];
 static struct callback_info **plugin_callbacks = plugin_callbacks_init;
 
+/* For invoke_plugin_callbacks(), see plugin.h.  */
+bool flag_plugin_added = false;
 
 #ifdef ENABLE_PLUGIN
 /* Each plugin should define an initialization function with exactly
@@ -137,6 +139,8 @@ add_new_plugin (const char* plugin_name)
   bool name_is_short;
   const char *pc;
 
+  flag_plugin_added = true;
+
   /* Replace short names by their full path when relevant.  */
   name_is_short  = !IS_ABSOLUTE_PATH (plugin_name);
   for (pc = plugin_name; name_is_short && *pc; pc++)
@@ -483,16 +487,11 @@ unregister_callback (const char *plugin_name, int event)
   return PLUGEVT_NO_CALLBACK;
 }
 
-/* Called from inside GCC.  Invoke all plug-in callbacks registered with
-   the specified event.
-   Return PLUGEVT_SUCCESS if at least one callback was called,
-   PLUGEVT_NO_CALLBACK if there was no callback.
-
-   EVENT    - the event identifier
-   GCC_DATA - event-specific data provided by the compiler  */
+/* Invoke all plugin callbacks registered with the specified event,
+   called from invoke_plugin_callbacks().  */
 
 int
-invoke_plugin_callbacks (int event, void *gcc_data)
+invoke_plugin_callbacks_full (int event, void *gcc_data)
 {
   int retval = PLUGEVT_SUCCESS;
 

gcc/plugin.h

 /* Header file for internal GCC plugin mechanism.
-   Copyright (C) 2009 Free Software Foundation, Inc.
+   Copyright (C) 2009, 2010 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -26,7 +26,7 @@ struct attribute_spec;
 
 extern void add_new_plugin (const char *);
 extern void parse_plugin_arg_opt (const char *);
-extern int invoke_plugin_callbacks (int, void *);
+extern int invoke_plugin_callbacks_full (int, void *);
 extern void initialize_plugins (void);
 extern bool plugins_active_p (void);
 extern void dump_active_plugins (FILE *);
@@ -35,6 +35,28 @@ extern void print_plugins_versions (FILE *file, const char *indent);
 extern void print_plugins_help (FILE *file, const char *indent);
 extern void finalize_plugins (void);
 
+/* Called from inside GCC.  Invoke all plugin callbacks registered with
+   the specified event.
+   Return PLUGEVT_SUCCESS if at least one callback was called,
+   PLUGEVT_NO_CALLBACK if there was no callback.
+
+   EVENT    - the event identifier
+   GCC_DATA - event-specific data provided by the compiler  */
+
+static inline int
+invoke_plugin_callbacks (int event, void *gcc_data)
+{
+#ifdef ENABLE_PLUGIN
+  /* True iff at least one plugin has been added.  */
+  extern bool flag_plugin_added;
+
+  if (flag_plugin_added)
+    return invoke_plugin_callbacks_full (event, gcc_data);
+#endif
+
+  return PLUGEVT_NO_CALLBACK;
+}
+
 /* In attribs.c.  */
 
 extern void register_attribute (const struct attribute_spec *attr);