| 1 | // RUN: %clang_tsan %s -o %t |
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| 2 | // RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer' |
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| 3 | |
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| 4 | #include "dispatch/dispatch.h" |
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| 5 | |
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| 6 | #include <stdio.h> |
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| 7 | |
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| 8 | long global; |
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| 9 | dispatch_semaphore_t done; |
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| 10 | |
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| 11 | void handler(void *arg) { |
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| 12 | fprintf(stderr, format: "global = %ld\n" , global); |
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| 13 | |
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| 14 | dispatch_semaphore_signal(done); |
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| 15 | } |
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| 16 | |
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| 17 | int main(int argc, const char *argv[]) { |
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| 18 | done = dispatch_semaphore_create(0); |
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| 19 | |
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| 20 | dispatch_queue_t queue = |
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| 21 | dispatch_queue_create("my.queue" , DISPATCH_QUEUE_CONCURRENT); |
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| 22 | |
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| 23 | dispatch_source_t source = |
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| 24 | dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue); |
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| 25 | |
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| 26 | dispatch_source_set_timer(source, dispatch_walltime(NULL, 0), 1e9, 5); |
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| 27 | |
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| 28 | global = 42; |
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| 29 | |
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| 30 | dispatch_source_set_cancel_handler_f(source, &handler); |
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| 31 | |
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| 32 | dispatch_resume(source); |
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| 33 | dispatch_cancel(source); |
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| 34 | |
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| 35 | dispatch_semaphore_wait(done, DISPATCH_TIME_FOREVER); |
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| 36 | |
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| 37 | return 0; |
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| 38 | } |
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| 39 | |
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| 40 | // CHECK: global = 42 |
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| 41 | |
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