1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s 2 #include "test.h" 3 4 int Global; 5 pthread_mutex_t mtx1; 6 pthread_mutex_t mtx2; 7 8 void *Thread1(void *x) { 9 barrier_wait(&barrier); 10 pthread_mutex_lock(&mtx1); 11 Global++; 12 pthread_mutex_unlock(&mtx1); 13 return NULL; 14 } 15 16 void *Thread2(void *x) { 17 pthread_mutex_lock(&mtx2); 18 Global--; 19 pthread_mutex_unlock(&mtx2); 20 barrier_wait(&barrier); 21 return NULL; 22 } 23 24 int main() { 25 barrier_init(&barrier, 2); 26 // CHECK: WARNING: ThreadSanitizer: data race 27 // CHECK: Write of size 4 at {{.*}} by thread T1 28 // CHECK: (mutexes: write [[M1:M[0-9]+]]): 29 // CHECK: Previous write of size 4 at {{.*}} by thread T2 30 // CHECK: (mutexes: write [[M2:M[0-9]+]]): 31 // CHECK: Mutex [[M1]] (0x{{.*}}) created at: 32 // CHECK: #0 pthread_mutex_init 33 // CHECK: #1 main {{.*}}mutexset5.cc:[[@LINE+4]] 34 // CHECK: Mutex [[M2]] (0x{{.*}}) created at: 35 // CHECK: #0 pthread_mutex_init 36 // CHECK: #1 main {{.*}}mutexset5.cc:[[@LINE+5]] 37 pthread_mutex_init(&mtx1, 0); 38 pthread_mutex_init(&mtx2, 0); 39 pthread_t t[2]; 40 pthread_create(&t[0], NULL, Thread1, NULL); 41 pthread_create(&t[1], NULL, Thread2, NULL); 42 pthread_join(t[0], NULL); 43 pthread_join(t[1], NULL); 44 pthread_mutex_destroy(&mtx1); 45 pthread_mutex_destroy(&mtx2); 46 } 47
