| // RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s |
| #include <pthread.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| |
| int Global; |
| pthread_mutex_t mtx1; |
| pthread_mutex_t mtx2; |
| |
| void *Thread1(void *x) { |
| pthread_mutex_lock(&mtx1); |
| pthread_mutex_lock(&mtx2); |
| Global++; |
| pthread_mutex_unlock(&mtx2); |
| pthread_mutex_unlock(&mtx1); |
| return NULL; |
| } |
| |
| void *Thread2(void *x) { |
| sleep(1); |
| Global--; |
| return NULL; |
| } |
| |
| int main() { |
| // 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]+]], write [[M2:M[0-9]+]]): |
| // CHECK: Mutex [[M1]] created at: |
| // CHECK: #0 pthread_mutex_init |
| // CHECK: #1 main {{.*}}/mutexset4.cc:[[@LINE+4]] |
| // CHECK: Mutex [[M2]] created at: |
| // CHECK: #0 pthread_mutex_init |
| // CHECK: #1 main {{.*}}/mutexset4.cc:[[@LINE+2]] |
| pthread_mutex_init(&mtx1, 0); |
| pthread_mutex_init(&mtx2, 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(&mtx1); |
| pthread_mutex_destroy(&mtx2); |
| } |