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define likely/unlikely

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This commit is contained in:
Adam Ierymenko 2017-05-09 20:22:08 -07:00
parent 73f7088b45
commit f479b76772
2 changed files with 20 additions and 0 deletions
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18
node/Constants.hpp
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@ -60,6 +60,8 @@
#endif
#ifdef __APPLE__
#define likely(x) __builtin_expect((x),1)
#define unlikely(x) __builtin_expect((x),0)
#include <TargetConditionals.h>
#ifndef __UNIX_LIKE__
#define __UNIX_LIKE__
@ -132,6 +134,22 @@
#include <endian.h>
#endif
#if (defined(__GNUC__) && (__GNUC__ >= 3)) || (defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 800)) || defined(__clang__)
#ifndef likely
#define likely(x) __builtin_expect((x),1)
#endif
#ifndef unlikely
#define unlikely(x) __builtin_expect((x),0)
#endif
#else
#ifndef likely
#define likely(x) (x)
#endif
#ifndef unlikely
#define unlikely(x) (x)
#endif
#endif
/**
* Length of a ZeroTier address in bytes
*/