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mark some conditions as unlikely

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* assertion failure
* malloc_init failure
* malloc not already initialized (in malloc_init)
* running in valgrind
* thread cache disabled at runtime

Clang and GCC already consider a comparison with NULL or -1 to be cold,
so many branches (out-of-memory) are already correctly considered as
cold and marking them is not important.
This commit is contained in:
Daniel Micay 2014-09-09 15:26:05 -04:00
parent 6b5609d23b
commit 23fdf8b359
4 changed files with 31 additions and 31 deletions
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6
include/jemalloc/internal/util.h
View file

@ -41,7 +41,7 @@
*/
#ifndef assert
#define assert(e) do { \
if (config_debug && !(e)) { \
if (unlikely(config_debug && !(e))) { \
malloc_printf( \
"<jemalloc>: %s:%d: Failed assertion: \"%s\"\n", \
__FILE__, __LINE__, #e); \
@ -73,14 +73,14 @@
#ifndef assert_not_implemented
#define assert_not_implemented(e) do { \
if (config_debug && !(e)) \
if (unlikely(config_debug && !(e))) \
not_implemented(); \
} while (0)
#endif
/* Use to assert a particular configuration, e.g., cassert(config_debug). */
#define cassert(c) do { \
if ((c) == false) \
if (unlikely(!(c))) \
not_reached(); \
} while (0)