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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 <assert.h>
#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <dispatch/dispatch.h>
#include "dispatch_test.h"
//
// There were several bugs related to sign extension / integer overflow that
// were encountered during development. Create a timer whose interval has the
// 31st bit of the word set to verify that it behaves correctly.
//
// 2 s < 0x80000000ull ns < 4 s
//
int
main(void)
{
test_start("Dispatch Source Timer, bit 31");
dispatch_queue_t main_q = dispatch_get_main_queue();
test_ptr("dispatch_get_main_queue", main_q, dispatch_get_current_queue());
dispatch_source_t timer;
struct timeval start_time;
gettimeofday(&start_time, NULL);
timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, main_q);
test_ptr_notnull("DISPATCH_SOURCE_TYPE_TIMER", timer);
dispatch_source_set_timer(timer, dispatch_time(DISPATCH_TIME_NOW, 0x80000000ull), 0, 0);
dispatch_source_set_event_handler(timer, ^{
dispatch_source_cancel(timer);
});
dispatch_source_set_cancel_handler(timer, ^{
struct timeval end_time;
gettimeofday(&end_time, NULL);
test_long_less_than("elapsed time < 4s", end_time.tv_sec - start_time.tv_sec, 4);
test_long_less_than("elapsed time > 2s", 1, end_time.tv_sec - start_time.tv_sec);
test_stop();
});
dispatch_resume(timer);
dispatch_main();
return 0;
}
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