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optimize POSIX TSD for fast pthread_getspecific

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This commit is contained in:
Rich Felker 2011-03-03 18:30:44 -05:00
commit b480808a6a
4 changed files with 14 additions and 9 deletions
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8
src/thread/pthread_setspecific.c
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@ -2,13 +2,7 @@
int pthread_setspecific(pthread_key_t k, const void *x)
{
struct pthread *self = pthread_self();
/* Handle the case of the main thread */
if (!self->tsd) {
if (!x) return 0;
if (!(self->tsd = calloc(sizeof(void *), PTHREAD_KEYS_MAX)))
return ENOMEM;
}
struct pthread *self = __pthread_self();
/* Avoid unnecessary COW */
if (self->tsd[k] != x) {
self->tsd[k] = (void *)x;