Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
| 2 | #include "test.h" |
| 3 | |
| 4 | int fds[2]; |
| 5 | |
| 6 | void *ThreadCreatePipe(void *x) { |
| 7 | pipe(fds); |
| 8 | return NULL; |
| 9 | } |
| 10 | |
| 11 | void *ThreadDummy(void *x) { |
| 12 | return NULL; |
| 13 | } |
| 14 | |
| 15 | void *ThreadWrite(void *x) { |
| 16 | write(fds[1], "a", 1); |
| 17 | barrier_wait(&barrier); |
| 18 | return NULL; |
| 19 | } |
| 20 | |
| 21 | void *ThreadClose(void *x) { |
| 22 | barrier_wait(&barrier); |
| 23 | close(fds[0]); |
| 24 | close(fds[1]); |
| 25 | return NULL; |
| 26 | } |
| 27 | |
| 28 | int main() { |
| 29 | barrier_init(&barrier, 2); |
| 30 | pthread_t t_create; |
| 31 | pthread_create(&t_create, NULL, ThreadCreatePipe, NULL); |
| 32 | pthread_join(t_create, NULL); |
| 33 | |
| 34 | for (int i = 0; i < 100; i++) { |
| 35 | pthread_t t_dummy; |
| 36 | pthread_create(&t_dummy, NULL, ThreadDummy, NULL); |
| 37 | pthread_join(t_dummy, NULL); |
| 38 | } |
| 39 | |
| 40 | pthread_t t[2]; |
| 41 | pthread_create(&t[0], NULL, ThreadWrite, NULL); |
| 42 | pthread_create(&t[1], NULL, ThreadClose, NULL); |
| 43 | pthread_join(t[0], NULL); |
| 44 | pthread_join(t[1], NULL); |
| 45 | } |
| 46 | |
| 47 | // CHECK-NOT: CHECK failed |
| 48 | // CHECK: WARNING: ThreadSanitizer: data race |
| 49 | // CHECK: Write of size 8 |
| 50 | // CHECK: #0 close |
| 51 | // CHECK: #1 ThreadClose |
| 52 | // CHECK: Previous read of size 8 |
| 53 | // CHECK: #0 write |
| 54 | // CHECK: #1 ThreadWrite |