| 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=atexit_sleep_ms=50 %run %t 2>&1 | FileCheck %s |
|---|---|
| 2 | #include "../test.h" |
| 3 | #include "syscall.h" |
| 4 | #include <errno.h> |
| 5 | #include <sys/types.h> |
| 6 | #include <sys/wait.h> |
| 7 | |
| 8 | int counter; |
| 9 | |
| 10 | static void *incrementer(void *p) { |
| 11 | for (;;) |
| 12 | __sync_fetch_and_add(&counter, 1); |
| 13 | return 0; |
| 14 | } |
| 15 | |
| 16 | int main() { |
| 17 | pthread_t th1; |
| 18 | pthread_create(newthread: &th1, attr: 0, start_routine: incrementer, arg: 0); |
| 19 | for (int i = 0; i < 10; i++) { |
| 20 | switch (myfork()) { |
| 21 | default: // parent |
| 22 | while (wait(stat_loc: 0) < 0) { |
| 23 | } |
| 24 | fprintf(stderr, format: "."); |
| 25 | break; |
| 26 | case 0: // child |
| 27 | __sync_fetch_and_add(&counter, 1); |
| 28 | exit(status: 0); |
| 29 | break; |
| 30 | case -1: // error |
| 31 | fprintf(stderr, format: "failed to fork (%d)\n", errno); |
| 32 | exit(status: 1); |
| 33 | } |
| 34 | } |
| 35 | fprintf(stderr, format: "OK\n"); |
| 36 | } |
| 37 | |
| 38 | // CHECK: OK |
| 39 |