From 0ab341b247fc1c2cd101a87c78f38d2da00c335c Mon Sep 17 00:00:00 2001 From: Sergey Bugaev Date: Thu, 27 Apr 2023 17:42:11 +0300 Subject: cdefs.h: Define __COLD This expands to __attribute__ ((cold)) when supported. It should be used to mark up functions that are invoked rarely. Signed-off-by: Sergey Bugaev --- misc/sys/cdefs.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'misc/sys/cdefs.h') diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h index 23ec0ebd2a..9a07e297a6 100644 --- a/misc/sys/cdefs.h +++ b/misc/sys/cdefs.h @@ -98,6 +98,12 @@ # endif # endif +# if __GNUC_PREREQ (4, 3) || __glibc_has_attribute (__cold__) +# define __COLD __attribute__ ((__cold__)) +# else +# define __COLD +# endif + #else /* Not GCC or clang. */ # if (defined __cplusplus \ @@ -110,6 +116,7 @@ # define __THROW # define __THROWNL # define __NTH(fct) fct +# define __COLD #endif /* GCC || clang. */ -- cgit 1.4.1