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add support for likely()/unlikely() type macros

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2032 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2007-11-09 01:28:56 +00:00
parent 14b974a6d8
commit c8cdb06135
1 changed files with 12 additions and 2 deletions
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14
src/pulsecore/gccmacro.h
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@ -60,7 +60,7 @@
#endif #endif
#ifndef PA_GCC_PURE #ifndef PA_GCC_PURE
#ifdef __GNUCC__ #ifdef __GNUC__
#define PA_GCC_PURE __attribute__ ((pure)) #define PA_GCC_PURE __attribute__ ((pure))
#else #else
/** This function's return value depends only the arguments list and global state **/ /** This function's return value depends only the arguments list and global state **/
@ -69,7 +69,7 @@
#endif #endif
#ifndef PA_GCC_CONST #ifndef PA_GCC_CONST
#ifdef __GNUCC__ #ifdef __GNUC__
#define PA_GCC_CONST __attribute__ ((const)) #define PA_GCC_CONST __attribute__ ((const))
#else #else
/** This function's return value depends only the arguments list (stricter version of PA_GCC_PURE) **/ /** This function's return value depends only the arguments list (stricter version of PA_GCC_PURE) **/
@ -77,4 +77,14 @@
#endif #endif
#endif #endif
#ifndef PA_LIKELY
#ifdef __GNUC__
#define PA_LIKELY(x) __builtin_expect((x),1)
#define PA_UNLIKELY(x) __builtin_expect((x),0)
#else
#define PA_LIKELY(x) (x)
#define PA_UNLIKELY(x) (x)
#endif
#endif
#endif #endif