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Merge team/russell/frame_caching

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There are some situations in Asterisk where ast_frame and/or iax_frame
structures are rapidly allocatted and freed (at least 50 times per second
for one call).

This code significantly improves the performance of ast_frame_header_new(), 
ast_frdup(), ast_frfree(), iax_frame_new(), and iax_frame_free() by keeping
a thread-local cache of these structures and using frames from the cache 
whenever possible instead of calling malloc/free every time.

This commit also converts the ast_frame and iax_frame structures to use the
linked list macros.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@41278 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2006-08-29 20:50:36 +00:00
parent d22476348a
commit f7e7161607
16 changed files with 345 additions and 313 deletions
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7
channels/iax2-parser.h
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@@ -18,6 +18,8 @@
#ifndef _IAX2_PARSER_H
#define _IAX2_PARSER_H
#include "asterisk/linkedlists.h"
struct iax_ies {
char *called_number;
char *calling_number;
@@ -115,10 +117,11 @@ struct iax_frame {
/* Retransmission ID */
int retrans;
/* Easy linking */
struct iax_frame *next;
struct iax_frame *prev;
AST_LIST_ENTRY(iax_frame) list;
/* Actual, isolated frame header */
struct ast_frame af;
/*! Amount of space _allocated_ for data */
size_t mallocd_datalen;
unsigned char unused[AST_FRIENDLY_OFFSET];
unsigned char afdata[0]; /* Data for frame */
};