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56 lines
1.2 KiB
56 lines
1.2 KiB
4 months ago
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// 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 "../test.h"
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dispatch_semaphore_t sem;
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long global;
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long global2;
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void callback(void *context) {
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global2 = 48;
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barrier_wait(&barrier);
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dispatch_semaphore_signal(sem);
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}
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int main() {
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fprintf(stderr, "Hello world.\n");
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barrier_init(&barrier, 2);
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dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_CONCURRENT);
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dispatch_group_t g = dispatch_group_create();
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sem = dispatch_semaphore_create(0);
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dispatch_group_enter(g);
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dispatch_async(q, ^{
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global = 47;
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dispatch_group_leave(g);
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barrier_wait(&barrier);
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});
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dispatch_group_notify(g, q, ^{
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global = 48;
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barrier_wait(&barrier);
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dispatch_semaphore_signal(sem);
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});
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dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
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dispatch_group_enter(g);
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dispatch_async(q, ^{
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global2 = 47;
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dispatch_group_leave(g);
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barrier_wait(&barrier);
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});
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dispatch_group_notify_f(g, q, NULL, &callback);
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dispatch_semaphore_wait(sem, 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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