]>
Commit | Line | Data |
---|---|---|
1a4d82fc JJ |
1 | // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
2 | // CHECK-NOT: WARNING: ThreadSanitizer: data race | |
3 | // CHECK-NOT: ThreadSanitizer WARNING: double lock | |
4 | // CHECK-NOT: ThreadSanitizer WARNING: mutex unlock by another thread | |
5 | // CHECK: OK | |
6 | ||
7 | #include <stdio.h> | |
8 | #include <stdlib.h> | |
9 | #include <pthread.h> | |
10 | ||
11 | pthread_mutex_t m; | |
12 | pthread_cond_t c; | |
13 | int x; | |
14 | ||
15 | void *thr1(void *p) { | |
16 | int i; | |
17 | ||
18 | for (i = 0; i < 10; i += 2) { | |
19 | pthread_mutex_lock(&m); | |
20 | while (x != i) | |
21 | pthread_cond_wait(&c, &m); | |
22 | x = i + 1; | |
23 | pthread_cond_signal(&c); | |
24 | pthread_mutex_unlock(&m); | |
25 | } | |
26 | return 0; | |
27 | } | |
28 | ||
29 | void *thr2(void *p) { | |
30 | int i; | |
31 | ||
32 | for (i = 1; i < 10; i += 2) { | |
33 | pthread_mutex_lock(&m); | |
34 | while (x != i) | |
35 | pthread_cond_wait(&c, &m); | |
36 | x = i + 1; | |
37 | pthread_mutex_unlock(&m); | |
38 | pthread_cond_broadcast(&c); | |
39 | } | |
40 | return 0; | |
41 | } | |
42 | ||
43 | int main() { | |
44 | pthread_t th1, th2; | |
45 | ||
46 | pthread_mutex_init(&m, 0); | |
47 | pthread_cond_init(&c, 0); | |
48 | pthread_create(&th1, 0, thr1, 0); | |
49 | pthread_create(&th2, 0, thr2, 0); | |
50 | pthread_join(th1, 0); | |
51 | pthread_join(th2, 0); | |
52 | fprintf(stderr, "OK\n"); | |
53 | } |