| 1 | // RUN: %clangxx -O1 %s -o %t && %run %t |
|---|
| 2 | // RUN: %clangxx -O1 -DUSE_GLIBC %s -o %t && %run %t |
|---|
| 3 | // UNSUPPORTED: android |
|---|
| 4 | |
|---|
| 5 | #include <pthread.h> |
|---|
| 6 | |
|---|
| 7 | #if !defined(__GLIBC_PREREQ) |
|---|
| 8 | #define __GLIBC_PREREQ(a, b) 0 |
|---|
| 9 | #endif |
|---|
| 10 | |
|---|
| 11 | #if defined(USE_GLIBC) && !__GLIBC_PREREQ(2, 34) |
|---|
| 12 | // They were removed from GLIBC 2.34 |
|---|
| 13 | extern "C" int __pthread_mutex_lock(pthread_mutex_t *__mutex); |
|---|
| 14 | extern "C" int __pthread_mutex_unlock(pthread_mutex_t *__mutex); |
|---|
| 15 | #define LOCK __pthread_mutex_lock |
|---|
| 16 | #define UNLOCK __pthread_mutex_unlock |
|---|
| 17 | #else |
|---|
| 18 | #define LOCK pthread_mutex_lock |
|---|
| 19 | #define UNLOCK pthread_mutex_unlock |
|---|
| 20 | #endif |
|---|
| 21 | |
|---|
| 22 | pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER; |
|---|
| 23 | int x; |
|---|
| 24 | |
|---|
| 25 | static void *Start(void *arg) { |
|---|
| 26 | LOCK(mutex: &m); |
|---|
| 27 | ++x; |
|---|
| 28 | UNLOCK(mutex: &m); |
|---|
| 29 | return nullptr; |
|---|
| 30 | } |
|---|
| 31 | |
|---|
| 32 | int main() { |
|---|
| 33 | pthread_t threads[2] = {}; |
|---|
| 34 | for (pthread_t &t : threads) |
|---|
| 35 | pthread_create(newthread: &t, attr: 0, start_routine: &Start, arg: 0); |
|---|
| 36 | for (pthread_t &t : threads) |
|---|
| 37 | pthread_join(th: t, thread_return: 0); |
|---|
| 38 | return 0; |
|---|
| 39 | } |
|---|
| 40 | |
|---|
