darling-libdispatch/tests/dispatch_overcommit.c
Ariel Abreu 5bceb4b74b
Import and build tests from apple/swift-corelibs-libdispatch
They were imported from apple/swift-corelibs-libdispatch@34f383d344, so the tests are slightly newer than the actual libdispatch code, but that shouldn't be a problem.
2021-05-22 11:38:55 -04:00

73 lines
1.7 KiB
C

/*
* Copyright (c) 2008-2011 Apple Inc. All rights reserved.
*
* @APPLE_APACHE_LICENSE_HEADER_START@
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @APPLE_APACHE_LICENSE_HEADER_END@
*/
#ifdef __linux__
// for asprintf
#define _GNU_SOURCE 1
#endif
#include <dispatch/dispatch.h>
#include <dispatch/private.h>
#include <stdio.h>
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
#include <unistd.h>
#endif
#include <stdlib.h>
#include <assert.h>
#ifdef __APPLE__
#include <libkern/OSAtomic.h>
#endif
#include <bsdtests.h>
#include "dispatch_test.h"
int32_t count = 0;
const int32_t final = 32;
int
main(void)
{
dispatch_test_start("Dispatch Overcommit");
int i;
for (i = 0; i < final; ++i) {
char* name;
(void)asprintf(&name, "test.overcommit.%d", i);
dispatch_queue_t queue = dispatch_queue_create(name, NULL);
test_ptr_notnull("dispatch_queue_create", queue);
free(name);
dispatch_set_target_queue(queue, dispatch_get_global_queue(0, DISPATCH_QUEUE_OVERCOMMIT));
dispatch_async(queue, ^{
OSAtomicIncrement32(&count);
if (count == final) {
test_long("count", count, final);
test_stop();
} else {
while (1); // spin
}
});
}
dispatch_main();
return 0;
}