diff options
| author | Daniel Stone <daniel@fooishbar.org> | 2006-10-26 00:45:36 +0300 |
|---|---|---|
| committer | Daniel Stone <daniels@endtroducing.fooishbar.org> | 2006-10-26 00:45:36 +0300 |
| commit | ab484c934301a61edc66dc1e4f554ec97b53aaf8 (patch) | |
| tree | 8a9ac153b75ae3052cbc27cfaf284b47ebc20d35 /Xfuncproto.h.in | |
| parent | 178cae180bc8b2e8feaaeda6d7c0317cf2715e14 (diff) | |
Xfuncproto: add _X_LIKELY and _X_UNLIKELY
Add gcc branch hinting annotations.
Diffstat (limited to 'Xfuncproto.h.in')
| -rw-r--r-- | Xfuncproto.h.in | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Xfuncproto.h.in b/Xfuncproto.h.in index ef9702f..e8f02be 100644 --- a/Xfuncproto.h.in +++ b/Xfuncproto.h.in @@ -89,16 +89,22 @@ in this Software without prior written authorization from The Open Group. # define _X_EXPORT __attribute__((visibility("default"))) # define _X_HIDDEN __attribute__((visibility("hidden"))) # define _X_INTERNAL __attribute__((visibility("internal"))) +# define _X_LIKELY(x) __builtin_expect(!!(x), 1) +# define _X_UNLIKELY(x) __builtin_expect(!!(x), 0) # define _X_INLINE inline #elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550) # define _X_EXPORT __global # define _X_HIDDEN __hidden # define _X_INTERNAL __hidden +# define _X_LIKELY(x) (x) +# define _X_UNLIKELY(x) (x) # define _X_INLINE inline #else /* not gcc >= 3.3 and not Sun Studio >= 8 */ # define _X_EXPORT # define _X_HIDDEN # define _X_INTERNAL +# define _X_LIKELY(x) (x) +# define _X_UNLIKELY(x) (x) # define _X_INLINE #endif |