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Add GNU likely/unlikely support

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c9s 2015-11-10 20:41:52 +08:00
parent 4ce9068963
commit cd430968ef
1 changed files with 7 additions and 0 deletions
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7
src/node.c
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@ -13,6 +13,13 @@
#include "slug.h" #include "slug.h"
#include "zmalloc.h" #include "zmalloc.h"
#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 CHECK_PTR(ptr) if (ptr == NULL) return NULL; #define CHECK_PTR(ptr) if (ptr == NULL) return NULL;