39 lines
1003 B
C
39 lines
1003 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(int argc, const char *argv[]) {
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fprintf(stderr, "Hello world.\n");
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dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_SERIAL);
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dispatch_source_t timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, q);
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long long interval_ms = 10;
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dispatch_source_set_timer(timer, dispatch_time(DISPATCH_TIME_NOW, 0), interval_ms * NSEC_PER_MSEC, 0);
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dispatch_semaphore_t sem = dispatch_semaphore_create(0);
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dispatch_source_set_event_handler(timer, ^{
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fprintf(stderr, "timer\n");
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global++;
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if (global > 50) {
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dispatch_semaphore_signal(sem);
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dispatch_suspend(timer);
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}
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});
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dispatch_resume(timer);
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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: timer
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// CHECK: Done.
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// CHECK-NOT: timer
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