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/*
* Copyright (c) 20017 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@
*/
/*
* IMPORTANT: This header file describes INTERNAL interfaces to libdispatch
* which are subject to change in future releases. Any applications relying on
* these interfaces WILL break.
*/
#ifndef __DISPATCH_TIME_PRIVATE__
#define __DISPATCH_TIME_PRIVATE__
#ifndef __DISPATCH_INDIRECT__
#error "Please #include <dispatch/private.h> instead of this file directly."
#include <dispatch/base.h> // for HeaderDoc
#endif
/*
* @constant DISPATCH_MONOTONICTIME_NOW
* A dispatch_time_t value that corresponds to the current value of the
* platform's monotonic clock. On Apple platforms, this clock is based on
* mach_continuous_time(). Use this value with the dispatch_time() function to
* derive a time value for a timer in monotonic time (i.e. a timer that
* continues to tick while the system is asleep). For example:
*
* dispatch_time_t t = dispatch_time(DISPATCH_MONOTONICTIME_NOW,5*NSEC_PER_SEC);
* dispatch_source_t ds = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER,
* 0, 0, q);
* dispatch_source_set_event_handler(ds, ^{ ... });
* dispatch_source_set_timer(ds, t, 10 * NSEC_PER_SEC, 0);
* dispatch_activate(ds);
*/
enum {
DISPATCH_MONOTONICTIME_NOW DISPATCH_ENUM_API_AVAILABLE(macos(10.14), ios(12.0), tvos(12.0), watchos(5.0)) = (1ull << 63)
};
#ifdef __APPLE__
// Helper macros for up time, montonic time and wall time.
#define _dispatch_uptime_after_nsec(t) \
dispatch_time(DISPATCH_TIME_NOW, (t))
#define _dispatch_uptime_after_usec(t) \
dispatch_time(DISPATCH_TIME_NOW, (t) * NSEC_PER_USEC)
#define _dispatch_uptime_after_msec(t) \
dispatch_time(DISPATCH_TIME_NOW, (t) * NSEC_PER_MSEC)
#define _dispatch_uptime_after_sec(t) \
dispatch_time(DISPATCH_TIME_NOW, (t) * NSEC_PER_SEC)
#define _dispatch_monotonictime_after_nsec(t) \
dispatch_time(DISPATCH_MONOTONICTIME_NOW, (t))
#define _dispatch_monotonictime_after_usec(t) \
dispatch_time(DISPATCH_MONOTONICTIME_NOW, (t) * NSEC_PER_USEC)
#define _dispatch_monotonictime_after_msec(t) \
dispatch_time(DISPATCH_MONOTONICTIME_NOW, (t) * NSEC_PER_MSEC)
#define _dispatch_monotonictime_after_sec(t) \
dispatch_time(DISPATCH_MONOTONICTIME_NOW, (t) * NSEC_PER_SEC)
#define _dispatch_walltime_after_nsec(t) \
dispatch_time(DISPATCH_WALLTIME_NOW, (t))
#define _dispatch_walltime_after_usec(t) \
dispatch_time(DISPATCH_WALLTIME_NOW, (t) * NSEC_PER_USEC)
#define _dispatch_walltime_after_msec(t) \
dispatch_time(DISPATCH_WALLTIME_NOW, (t) * NSEC_PER_MSEC)
#define _dispatch_walltime_after_sec(t) \
dispatch_time(DISPATCH_WALLTIME_NOW, (t) * NSEC_PER_SEC)
#endif // __APPLE__
#endif
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