1*7c3d14c8STreehugger Robot// RUN: %clang_tsan %s -o %t -framework Foundation 2*7c3d14c8STreehugger Robot// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %run %t 2>&1 | FileCheck %s 3*7c3d14c8STreehugger Robot 4*7c3d14c8STreehugger Robot#import <Foundation/Foundation.h> 5*7c3d14c8STreehugger Robot 6*7c3d14c8STreehugger Robotlong my_global = 0; 7*7c3d14c8STreehugger Robot 8*7c3d14c8STreehugger Robotint main(int argc, const char *argv[]) { 9*7c3d14c8STreehugger Robot fprintf(stderr, "Hello world.\n"); 10*7c3d14c8STreehugger Robot 11*7c3d14c8STreehugger Robot dispatch_queue_t queue = dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT); 12*7c3d14c8STreehugger Robot dispatch_semaphore_t sem = dispatch_semaphore_create(0); 13*7c3d14c8STreehugger Robot NSString *ns_path = [NSTemporaryDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"temp-gcd-io.%d", getpid()]]; 14*7c3d14c8STreehugger Robot const char *path = ns_path.fileSystemRepresentation; 15*7c3d14c8STreehugger Robot dispatch_io_t channel; 16*7c3d14c8STreehugger Robot 17*7c3d14c8STreehugger Robot dispatch_fd_t fd = open(path, O_CREAT | O_WRONLY, 0666); 18*7c3d14c8STreehugger Robot my_global++; 19*7c3d14c8STreehugger Robot channel = dispatch_io_create(DISPATCH_IO_STREAM, fd, queue, ^(int error) { 20*7c3d14c8STreehugger Robot my_global++; 21*7c3d14c8STreehugger Robot dispatch_semaphore_signal(sem); 22*7c3d14c8STreehugger Robot }); 23*7c3d14c8STreehugger Robot if (! channel) abort(); 24*7c3d14c8STreehugger Robot my_global++; 25*7c3d14c8STreehugger Robot dispatch_io_close(channel, 0); 26*7c3d14c8STreehugger Robot dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); 27*7c3d14c8STreehugger Robot 28*7c3d14c8STreehugger Robot my_global++; 29*7c3d14c8STreehugger Robot channel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path, O_CREAT | O_WRONLY, 0666, queue, ^(int error) { 30*7c3d14c8STreehugger Robot my_global++; 31*7c3d14c8STreehugger Robot dispatch_semaphore_signal(sem); 32*7c3d14c8STreehugger Robot }); 33*7c3d14c8STreehugger Robot if (! channel) abort(); 34*7c3d14c8STreehugger Robot my_global++; 35*7c3d14c8STreehugger Robot dispatch_io_close(channel, 0); 36*7c3d14c8STreehugger Robot dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); 37*7c3d14c8STreehugger Robot 38*7c3d14c8STreehugger Robot my_global++; 39*7c3d14c8STreehugger Robot dispatch_io_t other_channel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path, O_CREAT | O_WRONLY, 0666, queue, ^(int error) { }); 40*7c3d14c8STreehugger Robot channel = dispatch_io_create_with_io(DISPATCH_IO_STREAM, other_channel, queue, ^(int error) { 41*7c3d14c8STreehugger Robot my_global++; 42*7c3d14c8STreehugger Robot dispatch_semaphore_signal(sem); 43*7c3d14c8STreehugger Robot }); 44*7c3d14c8STreehugger Robot if (! channel) abort(); 45*7c3d14c8STreehugger Robot my_global++; 46*7c3d14c8STreehugger Robot dispatch_io_close(channel, 0); 47*7c3d14c8STreehugger Robot dispatch_io_close(other_channel, 0); 48*7c3d14c8STreehugger Robot dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); 49*7c3d14c8STreehugger Robot 50*7c3d14c8STreehugger Robot fprintf(stderr, "Done.\n"); 51*7c3d14c8STreehugger Robot return 0; 52*7c3d14c8STreehugger Robot} 53*7c3d14c8STreehugger Robot 54*7c3d14c8STreehugger Robot// CHECK: Hello world. 55*7c3d14c8STreehugger Robot// CHECK-NOT: WARNING: ThreadSanitizer 56*7c3d14c8STreehugger Robot// CHECK: Done. 57