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// RUN: %clang_tsan %s -o %t
// RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer'
#include "dispatch/dispatch.h"
#include <stdio.h>
long global;
int main(int argc, const char *argv[]) {
dispatch_semaphore_t done = dispatch_semaphore_create(0);
dispatch_queue_t target_queue = dispatch_queue_create(NULL, DISPATCH_QUEUE_SERIAL);
dispatch_queue_t q1 = dispatch_queue_create(NULL, DISPATCH_QUEUE_CONCURRENT);
dispatch_queue_t q2 = dispatch_queue_create(NULL, DISPATCH_QUEUE_CONCURRENT);
dispatch_set_target_queue(q1, target_queue);
dispatch_set_target_queue(q2, target_queue);
for (int i = 0; i < 100000; i++) {
dispatch_async(q1, ^{
global++;
if (global == 200000) {
dispatch_semaphore_signal(done);
}
});
dispatch_async(q2, ^{
global++;
if (global == 200000) {
dispatch_semaphore_signal(done);
}
});
}
dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);
fprintf(stderr, "Done.\n");
return 0;
}
// CHECK: Done.
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