38 lines
851 B
C
38 lines
851 B
C
// RUN: %clang_tsan %s -o %t
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// RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer'
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#include "dispatch/dispatch.h"
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#include <stdio.h>
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long global;
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int main() {
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fprintf(stderr, "Hello world.\n");
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dispatch_semaphore_t done = dispatch_semaphore_create(0);
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dispatch_queue_t q1 = dispatch_queue_create("my.queue1", DISPATCH_QUEUE_CONCURRENT);
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dispatch_queue_t q2 = dispatch_queue_create("my.queue2", DISPATCH_QUEUE_SERIAL);
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global = 42;
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for (int i = 0; i < 10; i++) {
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dispatch_async(q1, ^{
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for (int i = 0; i < 100; i++) {
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dispatch_sync(q2, ^{
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global++;
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});
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}
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});
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}
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dispatch_barrier_async(q1, ^{
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dispatch_semaphore_signal(done);
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});
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dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER);
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fprintf(stderr, "Done.\n");
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}
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// CHECK: Hello world.
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// CHECK: Done.
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