1  /* { dg-set-target-env-var TSAN_OPTIONS "halt_on_error=1" } */
       2  /* { dg-shouldfail "tsan" } */
       3  /* { dg-additional-options "-ldl" } */
       4  
       5  #include <pthread.h>
       6  #include <unistd.h>
       7  #include "tsan_barrier.h"
       8  
       9  #define MAX_ITERATIONS_NUMBER 1
      10  #define SLEEP_STEP 128000
      11  
      12  static pthread_barrier_t barrier;
      13  unsigned int delay_time = 1000;
      14  
      15  static inline void delay () {
      16    usleep(delay_time);
      17  }
      18  
      19  extern int main_1();
      20  
      21  int main() {
      22    barrier_init(&barrier, 2);
      23    int i;
      24    for (i = 0; i < MAX_ITERATIONS_NUMBER; i++) {
      25      main_1();
      26      delay_time += delay_time < 256000 ? delay_time : SLEEP_STEP;
      27    }
      28    return 0;
      29  }
      30  
      31  int Global;
      32  
      33  void *Thread1(void *x) {
      34    barrier_wait(&barrier);
      35    delay();
      36    Global = 42;
      37    return NULL;
      38  }
      39  
      40  void *Thread2(void *x) {
      41    Global = 43;
      42    barrier_wait(&barrier);
      43    return NULL;
      44  }
      45  
      46  int main_1() {
      47    pthread_t t[2];
      48    pthread_create(&t[0], NULL, Thread1, NULL);
      49    pthread_create(&t[1], NULL, Thread2, NULL);
      50    pthread_join(t[0], NULL);
      51    pthread_join(t[1], NULL);
      52    return 0;
      53  }
      54  
      55  /* { dg-output "WARNING: ThreadSanitizer: data race.*(\n|\r\n|\r)" } */