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48 lines
1.1 KiB
48 lines
1.1 KiB
4 months ago
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// RUN: %clang_tsan %s -o %t -framework Foundation
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// RUN: %deflake %run %t 2>&1 | FileCheck %s
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#import <Foundation/Foundation.h>
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#import "../test.h"
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pthread_mutex_t m1;
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pthread_mutex_t m2;
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int main(int argc, const char *argv[]) {
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barrier_init(&barrier, 2);
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fprintf(stderr, "Hello world.\n");
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pthread_mutex_init(&m1, NULL);
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pthread_mutex_init(&m2, NULL);
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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pthread_mutex_lock(&m1);
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pthread_mutex_lock(&m2);
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pthread_mutex_unlock(&m2);
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pthread_mutex_unlock(&m1);
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barrier_wait(&barrier);
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});
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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barrier_wait(&barrier);
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pthread_mutex_lock(&m2);
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pthread_mutex_lock(&m1);
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pthread_mutex_unlock(&m1);
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pthread_mutex_unlock(&m2);
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dispatch_sync(dispatch_get_main_queue(), ^{
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CFRunLoopStop(CFRunLoopGetCurrent());
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});
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});
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CFRunLoopRun();
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fprintf(stderr, "Done.\n");
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return 0;
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}
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// CHECK: Hello world.
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// CHECK: WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock)
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// CHECK: Done.
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