47 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 barrier_wait(&barrier);10 pthread_mutex_lock(&mtx1);11 Global++;12 pthread_mutex_unlock(&mtx1);13 return NULL;14}15 16void *Thread2(void *x) {17 pthread_mutex_lock(&mtx2);18 Global--;19 pthread_mutex_unlock(&mtx2);20 barrier_wait(&barrier);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 T128 // CHECK: (mutexes: write [[M1:M[0-9]+]]):29 // CHECK: Previous write of size 4 at {{.*}} by thread T230 // CHECK: (mutexes: write [[M2:M[0-9]+]]):31 // CHECK: Mutex [[M1]] (0x{{.*}}) created at:32 // CHECK: #0 pthread_mutex_init33 // CHECK: #1 main {{.*}}mutexset5.cpp:[[@LINE+4]]34 // CHECK: Mutex [[M2]] (0x{{.*}}) created at:35 // CHECK: #0 pthread_mutex_init36 // CHECK: #1 main {{.*}}mutexset5.cpp:[[@LINE+2]]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