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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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include/asterisk/channel.h
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@@ -410,7 +410,7 @@ struct ast_channel {
unsigned int pickupgroup; /*!< Pickup group - which calls groups can be picked up? */
unsigned int flags; /*!< channel flags of AST_FLAG_ type */
unsigned short transfercapability; /*!< ISDN Transfer Capbility - AST_FLAG_DIGITAL is not enough */
struct ast_frame *readq;
AST_LIST_HEAD_NOLOCK(, ast_frame) readq;
int alertpipe[2];
int nativeformats; /*!< Kinds of data this channel can natively handle */