[PATCH 1/3] cdefs.h: Define __COLD
Sergey Bugaev
bugaevc@gmail.com
Sat Apr 29 13:12:21 GMT 2023
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>
---
I can change __COLD to __attribute_cold__ if that is preferred.
misc/sys/cdefs.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index 23ec0ebd..8eec4b94 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 \
--
2.40.1
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