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// RUN: %clang_tsan %s -o %t -framework Foundation
// RUN: %run %t 2>&1 | FileCheck %s
#import <Foundation/Foundation.h>
long my_global = 0;
int main(int argc, const char *argv[]) {
fprintf(stderr, "Hello world.\n");
dispatch_queue_t queue = dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);
dispatch_semaphore_t sem = dispatch_semaphore_create(0);
NSString *ns_path = [NSTemporaryDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"temp-gcd-io.%d", getpid()]];
const char *path = ns_path.fileSystemRepresentation;
dispatch_io_t channel;
dispatch_fd_t fd = open(path, O_CREAT | O_WRONLY, 0666);
my_global++;
channel = dispatch_io_create(DISPATCH_IO_STREAM, fd, queue, ^(int error) {
my_global++;
dispatch_semaphore_signal(sem);
});
if (! channel) abort();
my_global++;
dispatch_io_close(channel, 0);
dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
my_global++;
channel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path, O_CREAT | O_WRONLY, 0666, queue, ^(int error) {
my_global++;
dispatch_semaphore_signal(sem);
});
if (! channel) abort();
my_global++;
dispatch_io_close(channel, 0);
dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
my_global++;
dispatch_io_t other_channel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path, O_CREAT | O_WRONLY, 0666, queue, ^(int error) { });
channel = dispatch_io_create_with_io(DISPATCH_IO_STREAM, other_channel, queue, ^(int error) {
my_global++;
dispatch_semaphore_signal(sem);
});
if (! channel) abort();
my_global++;
dispatch_io_close(channel, 0);
dispatch_io_close(other_channel, 0);
dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
fprintf(stderr, "Done.\n");
return 0;
}
// CHECK: Hello world.
// CHECK-NOT: WARNING: ThreadSanitizer
// CHECK: Done.
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