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47 lines
1.0 KiB
47 lines
1.0 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 <stdio.h>
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long my_global = 0;
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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 q1 = dispatch_queue_create("queue1", NULL);
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dispatch_queue_t q2 = dispatch_queue_create("queue2", NULL);
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dispatch_group_t g = dispatch_group_create();
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dispatch_sync(q1, ^{
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dispatch_suspend(q1);
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dispatch_async(q2, ^{
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my_global++;
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dispatch_resume(q1);
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});
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});
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dispatch_sync(q1, ^{
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my_global++;
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});
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dispatch_sync(q1, ^{
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dispatch_suspend(q1);
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dispatch_group_enter(g);
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dispatch_async(q1,^{ my_global++; });
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dispatch_async(q1,^{ my_global++; });
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dispatch_async(q1,^{ my_global++; dispatch_group_leave(g); });
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my_global++;
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dispatch_resume(q1);
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});
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dispatch_group_wait(g, DISPATCH_TIME_FOREVER);
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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: Done.
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