1*bcaeed49SFangrui Song // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2*bcaeed49SFangrui Song #include "test.h"
3*bcaeed49SFangrui Song
4*bcaeed49SFangrui Song int Global;
5*bcaeed49SFangrui Song pthread_mutex_t mtx1;
6*bcaeed49SFangrui Song pthread_mutex_t mtx2;
7*bcaeed49SFangrui Song
Thread1(void * x)8*bcaeed49SFangrui Song void *Thread1(void *x) {
9*bcaeed49SFangrui Song barrier_wait(&barrier);
10*bcaeed49SFangrui Song pthread_mutex_lock(&mtx1);
11*bcaeed49SFangrui Song pthread_mutex_lock(&mtx2);
12*bcaeed49SFangrui Song Global++;
13*bcaeed49SFangrui Song pthread_mutex_unlock(&mtx2);
14*bcaeed49SFangrui Song pthread_mutex_unlock(&mtx1);
15*bcaeed49SFangrui Song return NULL;
16*bcaeed49SFangrui Song }
17*bcaeed49SFangrui Song
Thread2(void * x)18*bcaeed49SFangrui Song void *Thread2(void *x) {
19*bcaeed49SFangrui Song Global--;
20*bcaeed49SFangrui Song barrier_wait(&barrier);
21*bcaeed49SFangrui Song return NULL;
22*bcaeed49SFangrui Song }
23*bcaeed49SFangrui Song
main()24*bcaeed49SFangrui Song int main() {
25*bcaeed49SFangrui Song barrier_init(&barrier, 2);
26*bcaeed49SFangrui Song // CHECK: WARNING: ThreadSanitizer: data race
27*bcaeed49SFangrui Song // CHECK: Write of size 4 at {{.*}} by thread T1
28*bcaeed49SFangrui Song // CHECK: (mutexes: write [[M1:M[0-9]+]], write [[M2:M[0-9]+]]):
29*bcaeed49SFangrui Song // CHECK: Previous write of size 4 at {{.*}} by thread T2:
30*bcaeed49SFangrui Song // CHECK: Mutex [[M1]] (0x{{.*}}) created at:
31*bcaeed49SFangrui Song // CHECK: #0 pthread_mutex_init
32*bcaeed49SFangrui Song // CHECK: #1 main {{.*}}mutexset3.cpp:[[@LINE+4]]
33*bcaeed49SFangrui Song // CHECK: Mutex [[M2]] (0x{{.*}}) created at:
34*bcaeed49SFangrui Song // CHECK: #0 pthread_mutex_init
35*bcaeed49SFangrui Song // CHECK: #1 main {{.*}}mutexset3.cpp:[[@LINE+2]]
36*bcaeed49SFangrui Song pthread_mutex_init(&mtx1, 0);
37*bcaeed49SFangrui Song pthread_mutex_init(&mtx2, 0);
38*bcaeed49SFangrui Song pthread_t t[2];
39*bcaeed49SFangrui Song pthread_create(&t[0], NULL, Thread1, NULL);
40*bcaeed49SFangrui Song pthread_create(&t[1], NULL, Thread2, NULL);
41*bcaeed49SFangrui Song pthread_join(t[0], NULL);
42*bcaeed49SFangrui Song pthread_join(t[1], NULL);
43*bcaeed49SFangrui Song pthread_mutex_destroy(&mtx1);
44*bcaeed49SFangrui Song pthread_mutex_destroy(&mtx2);
45*bcaeed49SFangrui Song }
46