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The nxt_expect() macro.

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This commit is contained in:
Valentin Bartenev
2017-04-11 19:28:23 +03:00
parent 60ae0314c0
commit e0881fd85c
1 changed files with 10 additions and 2 deletions
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12
src/nxt_clang.h
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@@ -30,17 +30,25 @@ nxt_pragma_loop_disable_vectorization
#if (NXT_HAVE_BUILTIN_EXPECT) #if (NXT_HAVE_BUILTIN_EXPECT)
#define \
nxt_expect(c, x) \
__builtin_expect((long) (x), (c))
#define \ #define \
nxt_fast_path(x) \ nxt_fast_path(x) \
__builtin_expect((long) (x), 1) nxt_expect(1, x)
#define \ #define \
nxt_slow_path(x) \ nxt_slow_path(x) \
__builtin_expect((long) (x), 0) nxt_expect(0, x)
#else #else
#define \
nxt_expect(c, x) \
(x)
#define \ #define \
nxt_fast_path(x) \ nxt_fast_path(x) \
(x) (x)