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 <bugaevc@gmail.com>
This commit is contained in:
Sergey Bugaev 2023-04-27 17:42:11 +03:00 committed by Samuel Thibault
parent f56ad6174c
commit 0ab341b247

View File

@ -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. */