From 7b51049f159b77b22bf1ac0f562e1a68598424e2 Mon Sep 17 00:00:00 2001 From: naruse Date: Thu, 21 Apr 2016 20:59:39 +0000 Subject: * include/ruby/ruby.h (LIKELY): moved from internal.h. * include/ruby/ruby.h (UNLIKELY): ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54662 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- include/ruby/ruby.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include') diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h index 5c942c95ce..71a91b558f 100644 --- a/include/ruby/ruby.h +++ b/include/ruby/ruby.h @@ -62,6 +62,15 @@ extern "C" { # define UNREACHABLE ((void)0) /* unreachable */ #endif +/* likely */ +#if __GNUC__ >= 3 +#define LIKELY(x) (__builtin_expect(!!(x), 1)) +#define UNLIKELY(x) (__builtin_expect(!!(x), 0)) +#else /* __GNUC__ >= 3 */ +#define LIKELY(x) (x) +#define UNLIKELY(x) (x) +#endif /* __GNUC__ >= 3 */ + #ifdef __GNUC__ #define PRINTF_ARGS(decl, string_index, first_to_check) \ decl __attribute__((format(printf, string_index, first_to_check))) -- cgit v1.2.3