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task.h
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118 lines (97 loc) · 3.02 KB
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/*
* https://github.com/Kolkir/cpptask/
* Copyright (c) 2011, Kyrylo Kolodiazhnyi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT OWNER OR 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.
*/
#ifndef _CPP_TASK_TASK_H_
#define _CPP_TASK_TASK_H_
#include "event.h"
#include "alignedalloc.h"
#include "eventmanager.h"
#include "exception.h"
#include <atomic>
#ifdef _MSC_VER
#pragma warning( push )
#pragma warning( disable : 4324 )
#endif
namespace cpptask { namespace internal {
// wait for task finished only with TaskManager::WaitTask
class alignas(_CPP_TASK_CACHE_LINE_SIZE_) Task
{
public:
Task()
: isFinished(false)
{}
virtual ~Task()
{
}
Task(const Task&) = delete;
const Task& operator=(const Task&) = delete;
virtual void Execute() = 0;
void Run(EventManager& eventManager)
{
if (IsFinished())
{
throw exception("Task already finished");
}
try
{
Execute();
}
catch(...)
{
lastException = std::current_exception();
}
isFinished = true;
eventManager.notify(EventId::TaskFinishedEvent); //required for multiple waits
}
std::exception_ptr GetLastException() const
{
return lastException;
}
bool IsFinished()
{
return isFinished == true;
}
void* operator new(size_t size)
{
return aligned_alloc(_CPP_TASK_CACHE_LINE_SIZE_, size);
}
void operator delete(void* ptr)
{
free(ptr);
}
void operator delete(void* ptr, size_t)
{
free(ptr);
}
private:
std::exception_ptr lastException;
std::atomic<bool> isFinished;
};
}}
#ifdef _MSC_VER
#pragma warning( pop )
#endif
#endif