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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_THIS_THREAD_HPP)
#define OMNI_THIS_THREAD_HPP 1
#include <omni/types/thread_t.hpp>
namespace omni {
namespace sync {
/**
* Gets the current system thread handle
*
* @return A thread_handle_t of the system thread handle
*/
inline omni::sync::thread_handle_t thread_handle()
{
#if defined(OMNI_OS_WIN)
#if defined(OMNI_WIN_API)
return ::GetCurrentThread();
#else
return reinterpret_cast<omni::sync::thread_handle_t>(::GetCurrentThread());
#endif
#else
return ::pthread_self();
#endif
}
/**
* Gets the system ID for the current thread
*
* @return A thread_t thread ID type of the current TID
*/
inline omni::sync::thread_t thread_id()
{
#if defined(OMNI_OS_WIN)
return ::GetCurrentThreadId();
#else
return ::pthread_self();
#endif
}
/**
* Stops the current thread from processing messages for the specified time
*
* @param milliseconds The number of milliseconds to sleep the current thread
*/
inline void sleep(unsigned long ms)
{
switch (ms) {
case 0: { // 0 sleep is equivalent to yield
OMNI_THREAD_YIELD();
} break;
case 1: {
OMNI_SLEEP_INIT();
OMNI_SLEEP1();
} break;
default: {
OMNI_SLEEP_INIT();
OMNI_SLEEP(ms);
} break;
}
}
/**
* Causes the current thread to be rescheduled by the OS.
* Not to be confused with sleep, this function does not
* stop the current thread, it merely calls the OS to have
* its thread scheduler move the current thread to a new
* thread schedule. If the current thread is of higher priority
* (or 'real time') this call might not have an effect.
*/
inline bool yield_thread()
{
#if defined(OMNI_OS_WIN)
return (::SwitchToThread() != 0);
#else
return (::sched_yield() == 0);
#endif
}
}
}
#endif // OMNI_THIS_THREAD_HPP