| // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
| #include "test.h" |
| |
| int Global; |
| pthread_mutex_t mtx; |
| |
| void *Thread1(void *x) { |
| pthread_mutex_lock(&mtx); |
| Global++; |
| pthread_mutex_unlock(&mtx); |
| barrier_wait(&barrier); |
| return NULL; |
| } |
| |
| void *Thread2(void *x) { |
| barrier_wait(&barrier); |
| Global--; |
| return NULL; |
| } |
| |
| int main() { |
| barrier_init(&barrier, 2); |
| // CHECK: WARNING: ThreadSanitizer: data race |
| // CHECK: Write of size 4 at {{.*}} by thread T2: |
| // CHECK: Previous write of size 4 at {{.*}} by thread T1 |
| // CHECK: (mutexes: write [[M1:M[0-9]+]]): |
| // CHECK: Mutex [[M1]] (0x{{.*}}) created at: |
| // CHECK: #0 pthread_mutex_init |
| // CHECK: #1 main {{.*}}mutexset2.cpp:[[@LINE+1]] |
| pthread_mutex_init(&mtx, 0); |
| pthread_t t[2]; |
| pthread_create(&t[0], NULL, Thread1, NULL); |
| pthread_create(&t[1], NULL, Thread2, NULL); |
| pthread_join(t[0], NULL); |
| pthread_join(t[1], NULL); |
| pthread_mutex_destroy(&mtx); |
| } |