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
9long my_global = 0;
10
11int main(int argc, const char *argv[]) {
12 fprintf(stderr, format: "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, pfx: "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, format: "Done.\n");
53 return 0;
54}
55
56// CHECK: Hello world.
57// CHECK: Done.
58

source code of compiler-rt/test/tsan/libdispatch/io-cleanup.c