1 // RUN: %clangxx_tsan -O1 %s -o %t && TSAN_OPTIONS="atexit_sleep_ms=50" %run %t 2>&1 | FileCheck %s
2 #include "test.h"
3 #include <errno.h>
4 #include <sys/types.h>
5 #include <sys/wait.h>
6
7 int counter;
8
incrementer(void * p)9 static void *incrementer(void *p) {
10 for (;;)
11 __sync_fetch_and_add(&counter, 1);
12 return 0;
13 }
14
watchdog(void * p)15 static void *watchdog(void *p) {
16 sleep(100); // is not intended to exit
17 fprintf(stderr, "timed out after 100 seconds\n");
18 exit(1);
19 return 0;
20 }
21
main()22 int main() {
23 barrier_init(&barrier, 2);
24 pthread_t th1, th2;
25 pthread_create(&th1, 0, incrementer, 0);
26 pthread_create(&th2, 0, watchdog, 0);
27 for (int i = 0; i < 10; i++) {
28 switch (fork()) {
29 default: // parent
30 while (wait(0) < 0) {}
31 fprintf(stderr, ".");
32 break;
33 case 0: // child
34 __sync_fetch_and_add(&counter, 1);
35 exit(0);
36 break;
37 case -1: // error
38 fprintf(stderr, "failed to fork (%d)\n", errno);
39 exit(1);
40 }
41 }
42 fprintf(stderr, "OK\n");
43 }
44
45 // CHECK: OK
46
47