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suppress masked cancellation in pthread_join

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like close, pthread_join is a resource-deallocation function which is
also a cancellation point. the intent of masked cancellation mode is
to exempt such functions from failure with ECANCELED.
This commit is contained in:
Rich Felker 2015-03-02 18:52:31 -05:00
parent a3de8f7fbc
commit eb4bd8d8bb
1 changed files with 5 additions and 1 deletions
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6
src/thread/pthread_join.c
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@ -3,12 +3,16 @@
int __munmap(void *, size_t); int __munmap(void *, size_t);
void __pthread_testcancel(void); void __pthread_testcancel(void);
int __pthread_setcancelstate(int, int *);
int __pthread_join(pthread_t t, void **res) int __pthread_join(pthread_t t, void **res)
{ {
int tmp; int tmp, cs;
__pthread_testcancel(); __pthread_testcancel();
__pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
if (cs == PTHREAD_CANCEL_ENABLE) __pthread_setcancelstate(cs, 0);
while ((tmp = t->tid)) __timedwait_cp(&t->tid, tmp, 0, 0, 0); while ((tmp = t->tid)) __timedwait_cp(&t->tid, tmp, 0, 0, 0);
__pthread_setcancelstate(cs, 0);
if (res) *res = t->result; if (res) *res = t->result;
if (t->map_base) __munmap(t->map_base, t->map_size); if (t->map_base) __munmap(t->map_base, t->map_size);
return 0; return 0;