compiler-rt/test/tsan/libdispatch/source-registration.c

   1 // RUN: %clang_tsan %s -o %t
   2 // RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer'
   3
   4 #include "dispatch/dispatch.h"
   5
   6 #include <stdio.h>
   7
   8 long global;
   9
  10 int main(int argc, const char *argv[]) {
  11   dispatch_semaphore_t done = dispatch_semaphore_create(0);
  12
  13   dispatch_queue_t queue =
  14       dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);
  15
  16   dispatch_source_t source =
  17       dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGHUP, 0, queue);
  18
  19   global = 42;
  20
  21   dispatch_source_set_registration_handler(source, ^{
  22     fprintf(stderr, "global = %ld\n", global);
  23
  24     dispatch_semaphore_signal(done);
  25   });
  26
  27   dispatch_resume(source);
  28
  29   dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);
  30
  31   return 0;
  32 }
  33
  34 // CHECK: global = 42