46 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s2#include "test.h"3 4int Global;5pthread_mutex_t mtx1;6pthread_mutex_t mtx2;7 8void *Thread1(void *x) {9 pthread_mutex_lock(&mtx1);10 pthread_mutex_lock(&mtx2);11 Global++;12 pthread_mutex_unlock(&mtx2);13 pthread_mutex_unlock(&mtx1);14 barrier_wait(&barrier);15 return NULL;16}17 18void *Thread2(void *x) {19 barrier_wait(&barrier);20 Global--;21 return NULL;22}23 24int main() {25 barrier_init(&barrier, 2);26 // CHECK: WARNING: ThreadSanitizer: data race27 // CHECK: Write of size 4 at {{.*}} by thread T2:28 // CHECK: Previous write of size 4 at {{.*}} by thread T129 // CHECK: (mutexes: write [[M1:M[0-9]+]], write [[M2:M[0-9]+]]):30 // CHECK: Mutex [[M1]] (0x{{.*}}) created at:31 // CHECK: #0 pthread_mutex_init32 // CHECK: #1 main {{.*}}mutexset4.cpp:[[@LINE+4]]33 // CHECK: Mutex [[M2]] (0x{{.*}}) created at:34 // CHECK: #0 pthread_mutex_init35 // CHECK: #1 main {{.*}}mutexset4.cpp:[[@LINE+2]]36 pthread_mutex_init(&mtx1, 0);37 pthread_mutex_init(&mtx2, 0);38 pthread_t t[2];39 pthread_create(&t[0], NULL, Thread1, NULL);40 pthread_create(&t[1], NULL, Thread2, NULL);41 pthread_join(t[0], NULL);42 pthread_join(t[1], NULL);43 pthread_mutex_destroy(&mtx1);44 pthread_mutex_destroy(&mtx2);45}46