forked from OSchip/llvm-project
57 lines
1.2 KiB
Plaintext
57 lines
1.2 KiB
Plaintext
// RUN: %clang_tsan %s -o %t -framework Foundation
|
|
// RUN: %run %t 2>&1 | FileCheck %s
|
|
|
|
#import <Foundation/Foundation.h>
|
|
|
|
#import "../test.h"
|
|
|
|
dispatch_semaphore_t sem;
|
|
|
|
long global;
|
|
long global2;
|
|
|
|
void callback(void *context) {
|
|
global2 = 48;
|
|
barrier_wait(&barrier);
|
|
|
|
dispatch_semaphore_signal(sem);
|
|
}
|
|
|
|
int main() {
|
|
fprintf(stderr, "Hello world.\n");
|
|
barrier_init(&barrier, 2);
|
|
|
|
dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);
|
|
dispatch_group_t g = dispatch_group_create();
|
|
sem = dispatch_semaphore_create(0);
|
|
|
|
dispatch_group_enter(g);
|
|
dispatch_async(q, ^{
|
|
global = 47;
|
|
dispatch_group_leave(g);
|
|
barrier_wait(&barrier);
|
|
});
|
|
dispatch_group_notify(g, q, ^{
|
|
global = 48;
|
|
barrier_wait(&barrier);
|
|
|
|
dispatch_semaphore_signal(sem);
|
|
});
|
|
dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
|
|
|
|
dispatch_group_enter(g);
|
|
dispatch_async(q, ^{
|
|
global2 = 47;
|
|
dispatch_group_leave(g);
|
|
barrier_wait(&barrier);
|
|
});
|
|
dispatch_group_notify_f(g, q, NULL, &callback);
|
|
dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
|
|
|
|
fprintf(stderr, "Done.\n");
|
|
}
|
|
|
|
// CHECK: Hello world.
|
|
// CHECK-NOT: WARNING: ThreadSanitizer
|
|
// CHECK: Done.
|