[svn-commits] russell: trunk r134815 - /trunk/channels/iax2-parser.c

[SVN commits to the Digium repositories]

Author: russell
Date: Thu Jul 31 11:50:10 2008
New Revision: 134815

URL: http://svn.digium.com/view/asterisk?view=rev&rev=134815
Log:
Merged revisions 134814 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r134814 | russell | 2008-07-31 11:45:31 -0500 (Thu, 31 Jul 2008) | 7 lines

In case we have some processing threads that free more frames than they allocate,
do not let the frame cache grow forever.

(closes issue #13160)
Reported by: tavius
Tested by: tavius, russell

........

Modified:
    trunk/channels/iax2-parser.c

Modified: trunk/channels/iax2-parser.c
URL: http://svn.digium.com/view/asterisk/trunk/channels/iax2-parser.c?view=diff&rev=134815&r1=134814&r2=134815
==============================================================================
--- trunk/channels/iax2-parser.c (original)
+++ trunk/channels/iax2-parser.c Thu Jul 31 11:50:10 2008
@@ -54,7 +54,14 @@
 
 /*! \brief This is just so iax_frames, a list head struct for holding a list of
  *  iax_frame structures, is defined. */
-AST_LIST_HEAD_NOLOCK(iax_frames, iax_frame);
+AST_LIST_HEAD_NOLOCK(iax_frame_list, iax_frame);
+
+struct iax_frames {
+	struct iax_frame_list list;
+	size_t size;
+};
+
+#define FRAME_CACHE_MAX_SIZE	20
 #endif
 
 static void internaloutput(const char *str)
@@ -995,10 +1002,11 @@
 
 	/* Attempt to get a frame from this thread's cache */
 	if ((iax_frames = ast_threadstorage_get(&frame_cache, sizeof(*iax_frames)))) {
-		AST_LIST_TRAVERSE_SAFE_BEGIN(iax_frames, fr, list) {
+		AST_LIST_TRAVERSE_SAFE_BEGIN(&iax_frames->list, fr, list) {
 			if (fr->afdatalen >= datalen) {
 				size_t afdatalen = fr->afdatalen;
 				AST_LIST_REMOVE_CURRENT(list);
+				iax_frames->size--;
 				memset(fr, 0, sizeof(*fr));
 				fr->afdatalen = afdatalen;
 				break;
@@ -1055,11 +1063,14 @@
 		return;
 	}
 
-	fr->direction = 0;
-	AST_LIST_INSERT_HEAD(iax_frames, fr, list);
-#else
+	if (iax_frames->size < FRAME_CACHE_MAX_SIZE) {
+		fr->direction = 0;
+		AST_LIST_INSERT_HEAD(&iax_frames->list, fr, list);
+		iax_frames->size++;
+		return;
+	}
+#endif
 	ast_free(fr);
-#endif
 }
 
 #if !defined(LOW_MEMORY)
@@ -1068,7 +1079,7 @@
 	struct iax_frames *frames = data;
 	struct iax_frame *cur;
 
-	while ((cur = AST_LIST_REMOVE_HEAD(frames, list)))
+	while ((cur = AST_LIST_REMOVE_HEAD(&frames->list, list)))
 		ast_free(cur);
 
 	ast_free(frames);