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add likely / unlikely macros

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This commit is contained in:
Daniel Micay 2014-09-08 22:18:49 -04:00
parent 61beeb9f69
commit 6b5609d23b
1 changed files with 8 additions and 0 deletions
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8
include/jemalloc/internal/util.h
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@ -27,6 +27,14 @@
# define JEMALLOC_CC_SILENCE_INIT(v)
#endif
#ifdef __GNUC__
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#else
#define likely(x) !!(x)
#define unlikely(x) !!(x)
#endif
/*
* Define a custom assert() in order to reduce the chances of deadlock during
* assertion failure.