src/compiler-rt/test/tsan/Darwin/gcd-source-cancel.mm

   1 // RUN: %clang_tsan %s -o %t -framework Foundation
   2 // RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %run %t 2>&1 | FileCheck %s
   3
   4 #import <Foundation/Foundation.h>
   5
   6 long global;
   7
   8 int main(int argc, const char *argv[]) {
   9   dispatch_queue_t queue =
  10       dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);
  11
  12   dispatch_source_t source =
  13       dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue);
  14
  15   dispatch_source_set_timer(source, dispatch_walltime(NULL, 0), 1e9, 5);
  16
  17   global = 42;
  18
  19   dispatch_source_set_cancel_handler(source, ^{
  20     fprintf(stderr, "global = %ld\n", global);
  21
  22     dispatch_sync(dispatch_get_main_queue(), ^{
  23       CFRunLoopStop(CFRunLoopGetCurrent());
  24     });
  25   });
  26
  27   dispatch_resume(source);
  28   dispatch_cancel(source);
  29
  30   CFRunLoopRun();
  31
  32   return 0;
  33 }
  34
  35 // CHECK: global = 42
  36 // CHECK-NOT: WARNING: ThreadSanitizer