compiler-rt/test/tsan/libdispatch/data.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 #include <string.h>
   8
   9 long global = 42;
  10
  11 int main(int argc, const char *argv[]) {
  12   fprintf(stderr, "Hello world.\n");
  13
  14   dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_SERIAL);
  15   dispatch_semaphore_t sem = dispatch_semaphore_create(0);
  16
  17   const char *buffer = "buffer";
  18   size_t size = strlen(buffer);
  19
  20   dispatch_data_t data = dispatch_data_create(buffer, size, q, ^{
  21     fprintf(stderr, "Data destructor.\n");
  22     global++;
  23
  24     dispatch_semaphore_signal(sem);
  25   });
  26   dispatch_release(data);
  27
  28   dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
  29
  30   data = dispatch_data_create(buffer, size, q, DISPATCH_DATA_DESTRUCTOR_DEFAULT);
  31   dispatch_release(data);
  32
  33   fprintf(stderr, "Done.\n");
  34 }
  35
  36 // CHECK: Hello world.
  37 // CHECK: Data destructor.
  38 // CHECK: Done.