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define a global null_frame object so when queueing a null frame, you don't

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have to allocate one on the stack


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@9001 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2006-01-31 17:18:58 +00:00
parent 18eac350af
commit e01861fafd
11 changed files with 51 additions and 64 deletions
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4
include/asterisk/frame.h
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@@ -111,6 +111,10 @@ struct ast_frame {
struct ast_frame *next;
};
/*! Queueing a null frame is fairly common, so we declare a global null frame object
for this purpose instead of having to declare one on the stack */
extern struct ast_frame ast_null_frame;
#define AST_FRIENDLY_OFFSET 64 /*! It's polite for a a new frame to
have this number of bytes for additional
headers. */