don't do frame header caching in the core if LOW_MEMORY is defined

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@49461 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/frame.c

@@ -49,6 +49,7 @@ static int headers;
 static AST_LIST_HEAD_STATIC(headerlist, ast_frame);
 #endif
 
+#if !defined(LOW_MEMORY)
 static void frame_cache_cleanup(void *data);
 
 /*! \brief A per-thread cache of frame headers */
@@ -73,6 +74,7 @@ struct ast_frame_cache {
 	struct ast_frames list;
 	size_t size;
 };
+#endif
 
 #define SMOOTHER_SIZE 8000
 
@@ -284,6 +286,8 @@ void ast_smoother_free(struct ast_smoother *s)
 static struct ast_frame *ast_frame_header_new(void)
 {
 	struct ast_frame *f;
+
+#if !defined(LOW_MEMORY)
 	struct ast_frame_cache *frames;
 
 	if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) {
@@ -296,6 +300,7 @@ static struct ast_frame *ast_frame_header_new(void)
 			return f;
 		}
 	}
+#endif
 
 	if (!(f = ast_calloc_cache(1, sizeof(*f))))
 		return NULL;
@@ -311,6 +316,7 @@ static struct ast_frame *ast_frame_header_new(void)
 	return f;
 }
 
+#if !defined(LOW_MEMORY)
 static void frame_cache_cleanup(void *data)
 {
 	struct ast_frame_cache *frames = data;
@@ -321,12 +327,14 @@ static void frame_cache_cleanup(void *data)
 	
 	free(frames);
 }
+#endif
 
 void ast_frame_free(struct ast_frame *fr, int cache)
 {
 	if (!fr->mallocd)
 		return;
 
+#if !defined(LOW_MEMORY)
 	if (cache && fr->mallocd == AST_MALLOCD_HDR) {
 		/* Cool, only the header is malloc'd, let's just cache those for now 
 		 * to keep things simple... */
@@ -339,6 +347,7 @@ void ast_frame_free(struct ast_frame *fr, int cache)
 			return;
 		}
 	}
+#endif
 	
 	if (fr->mallocd & AST_MALLOCD_DATA) {
 		if (fr->data) 
@@ -422,11 +431,14 @@ struct ast_frame *ast_frisolate(struct ast_frame *fr)
 
 struct ast_frame *ast_frdup(const struct ast_frame *f)
 {
-	struct ast_frame_cache *frames;
 	struct ast_frame *out = NULL;
 	int len, srclen = 0;
 	void *buf = NULL;
 
+#if !defined(LOW_MEMORY)
+	struct ast_frame_cache *frames;
+#endif
+
 	/* Start with standard stuff */
 	len = sizeof(*out) + AST_FRIENDLY_OFFSET + f->datalen;
 	/* If we have a source, add space for it */
@@ -439,6 +451,7 @@ struct ast_frame *ast_frdup(const struct ast_frame *f)
 	if (srclen > 0)
 		len += srclen + 1;
 	
+#if !defined(LOW_MEMORY)
 	if ((frames = ast_threadstorage_get(&frame_cache, sizeof(*frames)))) {
 		AST_LIST_TRAVERSE_SAFE_BEGIN(&frames->list, out, frame_list) {
 			if (out->mallocd_hdr_len >= len) {
@@ -453,6 +466,8 @@ struct ast_frame *ast_frdup(const struct ast_frame *f)
 		}
 		AST_LIST_TRAVERSE_SAFE_END
 	}
+#endif
+
 	if (!buf) {
 		if (!(buf = ast_calloc_cache(1, len)))
 			return NULL;