57 lines
1.8 KiB
Plaintext
57 lines
1.8 KiB
Plaintext
// RUN: %clang_tsan %s -o %t -framework Foundation
|
|
// RUN: %deflake %run %t 2>&1 | FileCheck %s
|
|
|
|
// REQUIRES: disabled
|
|
|
|
#import <Foundation/Foundation.h>
|
|
|
|
#import "../test.h"
|
|
|
|
dispatch_queue_t queue;
|
|
dispatch_data_t data;
|
|
dispatch_semaphore_t sem;
|
|
const char *path;
|
|
|
|
long my_global = 0;
|
|
|
|
int main(int argc, const char *argv[]) {
|
|
fprintf(stderr, "Hello world.\n");
|
|
print_address("addr=", 1, &my_global);
|
|
barrier_init(&barrier, 2);
|
|
|
|
queue = dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);
|
|
sem = dispatch_semaphore_create(0);
|
|
NSString *ns_path = [NSTemporaryDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"temp-gcd-io.%d", getpid()]];
|
|
path = ns_path.fileSystemRepresentation;
|
|
NSData *ns_data = [NSMutableData dataWithLength:1000];
|
|
data = dispatch_data_create(ns_data.bytes, ns_data.length, NULL, DISPATCH_DATA_DESTRUCTOR_DEFAULT);
|
|
|
|
dispatch_io_t channel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path, O_CREAT | O_WRONLY, 0666, queue, ^(int error) { });
|
|
if (! channel) abort();
|
|
dispatch_io_set_high_water(channel, 1);
|
|
|
|
dispatch_io_write(channel, 0, data, queue, ^(bool done, dispatch_data_t remainingData, int error) {
|
|
my_global = 42;
|
|
barrier_wait(&barrier);
|
|
});
|
|
|
|
dispatch_io_write(channel, 0, data, queue, ^(bool done, dispatch_data_t remainingData, int error) {
|
|
barrier_wait(&barrier);
|
|
my_global = 42;
|
|
|
|
dispatch_semaphore_signal(sem);
|
|
});
|
|
|
|
dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
|
|
dispatch_io_close(channel, 0);
|
|
|
|
fprintf(stderr, "Done.\n");
|
|
return 0;
|
|
}
|
|
|
|
// CHECK: Hello world.
|
|
// CHECK: addr=[[ADDR:0x[0-9,a-f]+]]
|
|
// CHECK: WARNING: ThreadSanitizer: data race
|
|
// CHECK: Location is global 'my_global' {{(of size 8 )?}}at [[ADDR]] (gcd-io-race.mm.tmp+0x{{[0-9,a-f]+}})
|
|
// CHECK: Done.
|