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Make futexes cancellable by pthreads

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This commit is contained in:
Justine Tunney 2022-11-04 18:19:05 -07:00
parent 2278327eba
commit 022536cab6
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GPG key ID: BE714B4575D6E328
101 changed files with 627 additions and 391 deletions
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10
libc/thread/pthread_join.c
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@ -27,14 +27,16 @@
* @param value_ptr if non-null will receive pthread_exit() argument
* if the thread called pthread_exit(), or `PTHREAD_CANCELED` if
* pthread_cancel() destroyed the thread instead
* @return 0 on success, or errno with error
* @return 0 on success, or errno on error
* @raise ECANCELED if calling thread was cancelled in masked mode
* @raise EDEADLK if `thread` is the current thread
* @raise EINVAL if `thread` is detached
* @cancellationpoint
* @returnserrno
* @threadsafe
*/
int pthread_join(pthread_t thread, void **value_ptr) {
errno_t pthread_join(pthread_t thread, void **value_ptr) {
errno_t rc;
struct PosixThread *pt;
if (thread == __get_tls()->tib_pthread) {
return EDEADLK;
@ -44,7 +46,9 @@ int pthread_join(pthread_t thread, void **value_ptr) {
pt->status == kPosixThreadDetached) {
return EINVAL;
}
_pthread_wait(pt);
if ((rc = _pthread_wait(pt))) {
return rc;
}
if (value_ptr) {
*value_ptr = pt->rc;
}