Merge pull request #59385 from al45tair/fix-pthreads-cond-wait

swift-ci · web-flow · commit fecba2eb904d · 2022-06-11T14:06:31.000-07:00
[Threading][Pthreads] Fix pthread_cond_wait() call.
diff --git a/lib/Threading/Pthreads.cpp b/lib/Threading/Pthreads.cpp
@@ -71,7 +71,7 @@ void swift::threading_impl::once_slow(once_t &predicate, void (*fn)(void *),
 
   pthread_mutex_lock(&onceMutex);
   while (predicate.load(std::memory_order_acquire) >= (std::int64_t)0) {
-    pthread_cond_wait(&onceCond);
+    pthread_cond_wait(&onceCond, &onceMutex);
   }
   pthread_mutex_unlock(&onceMutex);
 }

Original file line number	Diff line number	Diff line change
`@@ -71,7 +71,7 @@ void swift::threading_impl::once_slow(once_t &predicate, void (fn)(void ),`
`71`	`71`
`72`	`72`	`pthread_mutex_lock(&onceMutex);`
`73`	`73`	`while (predicate.load(std::memory_order_acquire) >= (std::int64_t)0) {`
`74`		`- pthread_cond_wait(&onceCond);`
	`74`	`+ pthread_cond_wait(&onceCond, &onceMutex);`
`75`	`75`	`}`
`76`	`76`	`pthread_mutex_unlock(&onceMutex);`
`77`	`77`	`}`