test/tsan/cond_cancel.c

   1 // RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
   2 // CHECK-NOT: WARNING
   3 // CHECK: OK
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <pthread.h>
   8 #include <unistd.h>
   9
  10 pthread_mutex_t m;
  11 pthread_cond_t c;
  12 int x;
  13
  14 void *thr1(void *p) {
  15   pthread_mutex_lock(&m);
  16   pthread_cleanup_push((void(*)(void *arg))pthread_mutex_unlock, &m);
  17   while (x == 0)
  18     pthread_cond_wait(&c, &m);
  19   pthread_cleanup_pop(1);
  20   return 0;
  21 }
  22
  23 int main() {
  24   pthread_t th;
  25
  26   pthread_mutex_init(&m, 0);
  27   pthread_cond_init(&c, 0);
  28
  29   pthread_create(&th, 0, thr1, 0);
  30   sleep(1);  // let it block on cond var
  31   pthread_cancel(th);
  32
  33   pthread_join(th, 0);
  34   pthread_mutex_lock(&m);
  35   pthread_mutex_unlock(&m);
  36   fprintf(stderr, "OK\n");
  37 }