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/*
* This file is part of the Omni C++ framework
*
* Copyright (c) 2016, Zeriph Enterprises, LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of Zeriph, Zeriph Enterprises, LLC, nor the names
* of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY ZERIPH AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ZERIPH AND CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if !defined(OMNI_TICK_T_HPP)
#define OMNI_TICK_T_HPP 1
#include <omni/defs/global.hpp>
#if !defined(OMNI_OS_WIN)
#include <cstring> // memset
#endif
#if defined(OMNI_OS_WIN) && defined(OMNI_WIN_API)
#if !defined(OMNI_WIN_MONO_TICK_QPC) && !defined(OMNI_WIN_MONO_TICK_COUNT) && !defined(OMNI_WIN_MONO_TICK_COUNT64)
#define OMNI_WIN_MONO_TICK_QPC
#endif
#if defined(OMNI_WIN_MONO_TICK_QPC)
#define OMNI_CLOCK_TICK_T LARGE_INTEGER
#elif defined(OMNI_WIN_MONO_TICK_COUNT)
#define OMNI_CLOCK_TICK_T DWORD
#elif defined(OMNI_WIN_MONO_TICK_COUNT64)
#define OMNI_CLOCK_TICK_T ULONGLONG
#endif
#elif defined(OMNI_OS_APPLE)
#include <unistd.h>
#include <sys/time.h>
#include <mach/mach_time.h> // mach_time func's
#define OMNI_CLOCK_TICK_T uint64_t
#define OMNI_CLOCK_FREQ_T mach_timebase_info_data_t
#else
// DEV_NOTE: some systems might need -lrt
#include <ctime>
// DEV_NOTE: csignal contains a reference to CLOCK_MONOTONIC
#include <csignal>
#if defined(OMNI_OS_WIN)
#define OMNI_CLOCK_TICK_T clock_t
#else
// non Win/OSX use clock_gettime for tick call
#define OMNI_CLOCK_TICK_T struct timespec
#if !defined(CLOCK_MONOTONIC)
#error CLOCK_MONOTONIC is not defined
#endif
#endif
/* DEV_NOTE: some systems (like QNX) only take CLOCK_REALTIME for clock_getres, but will return correct
values for clock_gettime with CLOCK_MONOTONIC, use OMNI_CLOCK_GETRES_REALTIME to change this behaviour */
#if defined(OMNI_CLOCK_GETRES_REALTIME)
#define OMNI_CLOCK_GETRES_CID_FW CLOCK_REALTIME
#else
#define OMNI_CLOCK_GETRES_CID_FW CLOCK_MONOTONIC
#endif
#endif
#if !defined(OMNI_CLOCK_FREQ_T)
#define OMNI_CLOCK_FREQ_T omni::chrono::tick_t
#endif
namespace omni {
namespace chrono {
typedef OMNI_CLOCK_TICK_T tick_t;
typedef OMNI_CLOCK_FREQ_T freq_t;
}
}
#endif // OMNI_TICK_T_HPP