compiler-rt/test/tsan/libdispatch/io-cleanup.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 <stdlib.h>
   8
   9 long my_global = 0;
  10
  11 int main(int argc, const char *argv[]) {
  12   fprintf(stderr, "Hello world.\n");
  13
  14   dispatch_queue_t queue = dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);
  15   dispatch_semaphore_t sem = dispatch_semaphore_create(0);
  16   const char *path = tempnam(NULL, "libdispatch-io-cleanup-");
  17   dispatch_io_t channel;
  18
  19   dispatch_fd_t fd = open(path, O_CREAT | O_WRONLY, 0666);
  20   my_global++;
  21   channel = dispatch_io_create(DISPATCH_IO_STREAM, fd, queue, ^(int error) {
  22     my_global++;
  23     dispatch_semaphore_signal(sem);
  24   });
  25   if (! channel) abort();
  26   my_global++;
  27   dispatch_io_close(channel, 0);
  28   dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
  29
  30   my_global++;
  31   channel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path, O_CREAT | O_WRONLY, 0666, queue, ^(int error) {
  32     my_global++;
  33     dispatch_semaphore_signal(sem);
  34   });
  35   if (! channel) abort();
  36   my_global++;
  37   dispatch_io_close(channel, 0);
  38   dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
  39
  40   my_global++;
  41   dispatch_io_t other_channel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path, O_CREAT | O_WRONLY, 0666, queue, ^(int error) { });
  42   channel = dispatch_io_create_with_io(DISPATCH_IO_STREAM, other_channel, queue, ^(int error) {
  43     my_global++;
  44     dispatch_semaphore_signal(sem);
  45   });
  46   if (! channel) abort();
  47   my_global++;
  48   dispatch_io_close(channel, 0);
  49   dispatch_io_close(other_channel, 0);
  50   dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
  51
  52   fprintf(stderr, "Done.\n");
  53   return 0;
  54 }
  55
  56 // CHECK: Hello world.
  57 // CHECK: Done.