62 lines
1.7 KiB
C
62 lines
1.7 KiB
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 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 queue = dispatch_queue_create("my.queue", DISPATCH_QUEUE_SERIAL);
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dispatch_semaphore_t sem = dispatch_semaphore_create(0);
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const char *path = tempnam(NULL, "libdispatch-fd-");
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dispatch_io_t channel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path, O_CREAT | O_WRONLY,
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0666, queue, ^(int error) { });
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dispatch_io_set_high_water(channel, 1);
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char buf[1000];
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dispatch_data_t data = dispatch_data_create(buf, sizeof(buf), NULL, DISPATCH_DATA_DESTRUCTOR_DEFAULT);
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my_global++;
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dispatch_io_write(channel, 0, data, queue, ^(bool done, dispatch_data_t remainingData, int error) {
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my_global++;
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dispatch_async(queue, ^{
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my_global++;
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if (done) {
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dispatch_semaphore_signal(sem);
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}
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});
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});
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dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
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my_global++;
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dispatch_io_close(channel, 0);
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channel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path, O_RDONLY,
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0, queue, ^(int error) { });
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dispatch_io_set_high_water(channel, 1);
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my_global++;
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dispatch_io_read(channel, 0, SIZE_MAX, queue, ^(bool done, dispatch_data_t remainingData, int error) {
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my_global++;
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dispatch_async(queue, ^{
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my_global++;
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if (done) {
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dispatch_semaphore_signal(sem);
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}
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});
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});
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dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
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my_global++;
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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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