35 lines
761 B
C++
35 lines
761 B
C++
// RUN: %clangxx -O1 %s -o %t && %run %t
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// RUN: %clangxx -O1 -DUSE_GLIBC %s -o %t && %run %t
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// UNSUPPORTED: android
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#include <pthread.h>
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#ifdef USE_GLIBC
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extern "C" int __pthread_mutex_lock(pthread_mutex_t *__mutex);
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extern "C" int __pthread_mutex_unlock(pthread_mutex_t *__mutex);
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#define LOCK __pthread_mutex_lock
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#define UNLOCK __pthread_mutex_unlock
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#else
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#define LOCK pthread_mutex_lock
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#define UNLOCK pthread_mutex_unlock
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#endif
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pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
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int x;
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static void *Start(void *arg) {
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LOCK(&m);
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++x;
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UNLOCK(&m);
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return nullptr;
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}
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int main() {
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pthread_t threads[2] = {};
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for (pthread_t &t : threads)
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pthread_create(&t, 0, &Start, 0);
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for (pthread_t &t : threads)
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pthread_join(t, 0);
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return 0;
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}
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