include/libdispatch/time.h

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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@
 */

#ifndef __DISPATCH_TIME__
#define __DISPATCH_TIME__

#ifndef __DISPATCH_INDIRECT__
#error "Please #include <xdispatch/dispatch.h> instead of this file directly."
#include "base.h" // for HeaderDoc
#endif

#include <stdint.h>

__DISPATCH_BEGIN_DECLS

struct timespec;

// 6368156
#ifdef NSEC_PER_SEC
#undef NSEC_PER_SEC
#endif
#ifdef USEC_PER_SEC
#undef USEC_PER_SEC
#endif
#ifdef NSEC_PER_USEC
#undef NSEC_PER_USEC
#endif
#ifdef NSEC_PER_MSEC
#undef NSEC_PER_MSEC
#endif
#define NSEC_PER_SEC (uint64_t)1000000000
#define NSEC_PER_MSEC (uint64_t)1000000
#define USEC_PER_SEC (uint64_t)1000000
#define NSEC_PER_USEC (uint64_t)1000

typedef uint64_t dispatch_time_t;

#define DISPATCH_TIME_NOW 0
#define DISPATCH_TIME_FOREVER (~0ull)

__OSX_AVAILABLE_STARTING(__MAC_10_6,__IPHONE_4_0)
DISPATCH_EXPORT DISPATCH_NOTHROW
dispatch_time_t
dispatch_time(dispatch_time_t when, int64_t delta);

__OSX_AVAILABLE_STARTING(__MAC_10_6,__IPHONE_4_0)
DISPATCH_EXPORT DISPATCH_NOTHROW
dispatch_time_t
dispatch_walltime(const struct timespec *when, int64_t delta);

__DISPATCH_END_DECLS

#endif