src/compiler-rt/test/tsan/Darwin/gcd-target-queue-norace.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 target_queue = dispatch_queue_create(NULL, DISPATCH_QUEUE_SERIAL);
  10   dispatch_queue_t q1 = dispatch_queue_create(NULL, DISPATCH_QUEUE_CONCURRENT);
  11   dispatch_queue_t q2 = dispatch_queue_create(NULL, DISPATCH_QUEUE_CONCURRENT);
  12   dispatch_set_target_queue(q1, target_queue);
  13   dispatch_set_target_queue(q2, target_queue);
  14
  15   for (int i = 0; i < 100000; i++) {
  16     dispatch_async(q1, ^{
  17       global++;
  18
  19       if (global == 200000) {
  20         dispatch_sync(dispatch_get_main_queue(), ^{
  21           CFRunLoopStop(CFRunLoopGetCurrent());
  22         });
  23       }
  24     });
  25     dispatch_async(q2, ^{
  26       global++;
  27
  28       if (global == 200000) {
  29         dispatch_sync(dispatch_get_main_queue(), ^{
  30           CFRunLoopStop(CFRunLoopGetCurrent());
  31         });
  32       }
  33     });
  34   }
  35
  36   CFRunLoopRun();
  37   NSLog(@"Done.");
  38   return 0;
  39 }
  40
  41 // CHECK-NOT: WARNING: ThreadSanitizer