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/*
* Copyright (c) 2008-2009 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@
*/
#include "config/config.h"
#include <dispatch/dispatch.h>
#define __DISPATCH_INDIRECT__
#include "src/queue_private.h"
#include <pthread.h>
#include <stdio.h>
#include <stdint.h>
#include <limits.h>
#include <assert.h>
#include "dispatch_test.h"
#define LAPS 10000
#define INTERVAL 100
static size_t r_count = LAPS;
static size_t w_count = LAPS / INTERVAL;
static void
writer(void *ctxt __attribute__((unused)))
{
if (--w_count == 0) {
if (r_count == 0) {
test_stop();
}
}
}
static void
reader(void *ctxt __attribute__((unused)))
{
if (__sync_sub_and_fetch(&r_count, 1) == 0) {
if (r_count == 0) {
test_stop();
}
}
}
int
main(void)
{
dispatch_queue_t dq;
test_start("Dispatch Reader/Writer Queues");
dq = dispatch_queue_create("com.apple.libdispatch.test_readsync", NULL);
assert(dq);
dispatch_queue_set_width(dq, LONG_MAX);
dispatch_apply(LAPS, dispatch_get_global_queue(0, 0), ^(size_t idx) {
dispatch_sync_f(dq, NULL, reader);
if (idx % INTERVAL) {
dispatch_barrier_async_f(dq, NULL, writer);
}
});
dispatch_release(dq);
dispatch_main();
}
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