source: XMLIO_V2/external/src/POCO/Foundation/Thread_WIN32.hpp @ 80

//
// Thread_WIN32.h
//
// $Id: //poco/1.3/Foundation/src/Thread_WIN32.cpp#9 $
//
// Library: Foundation
// Package: Threading
// Module:  Thread
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include <Poco/Thread_WIN32.h>
#include <Poco/Exception.h>
#include <Poco/ErrorHandler.h>
#include <process.h>


namespace Poco {


ThreadImpl::CurrentThreadHolder ThreadImpl::_currentThreadHolder;


ThreadImpl::ThreadImpl():
        _pRunnableTarget(0),
        _thread(0),
        _threadId(0),
        _prio(PRIO_NORMAL_IMPL),
        _stackSize(POCO_THREAD_STACK_SIZE)
{
}

                        
ThreadImpl::~ThreadImpl()
{
        if (_thread) CloseHandle(_thread);
}


void ThreadImpl::setPriorityImpl(int prio)
{
        if (prio != _prio)
        {
                _prio = prio;
                if (_thread)
                {
                        if (SetThreadPriority(_thread, _prio) == 0)
                                throw SystemException("cannot set thread priority");
                }
        }
}


void ThreadImpl::setOSPriorityImpl(int prio)
{
        setPriorityImpl(prio);
}


void ThreadImpl::startImpl(Runnable& target)
{
        if (isRunningImpl())
                throw SystemException("thread already running");

        _pRunnableTarget = &target;

        createImpl(runnableEntry, this);
}


void ThreadImpl::startImpl(Callable target, void* pData)
{
        if (isRunningImpl())
                throw SystemException("thread already running");

        _callbackTarget.callback = target;
        _callbackTarget.pData = pData;

        createImpl(callableEntry, this);
}


void ThreadImpl::createImpl(Entry ent, void* pData)
{
#if defined(_DLL)
        _thread = CreateThread(NULL, _stackSize, ent, pData, 0, &_threadId);
#else
        unsigned threadId;
        _thread = (HANDLE) _beginthreadex(NULL, _stackSize, ent, this, 0, &threadId);
        _threadId = static_cast<DWORD>(threadId);
#endif
        if (!_thread)
                throw SystemException("cannot create thread");
        if (_prio != PRIO_NORMAL_IMPL && !SetThreadPriority(_thread, _prio))
                throw SystemException("cannot set thread priority");
}


void ThreadImpl::joinImpl()
{
        if (!_thread) return;

        switch (WaitForSingleObject(_thread, INFINITE))
        {
        case WAIT_OBJECT_0:
                threadCleanup();
                return;
        default:
                throw SystemException("cannot join thread");
        }
}


bool ThreadImpl::joinImpl(long milliseconds)
{
        if (!_thread) return true;

        switch (WaitForSingleObject(_thread, milliseconds + 1))
        {
        case WAIT_TIMEOUT:
                return false;
        case WAIT_OBJECT_0:
                threadCleanup();
                return true;
        default:
                throw SystemException("cannot join thread");
        }
}


bool ThreadImpl::isRunningImpl() const
{
        if (_thread)
        {
                DWORD ec = 0;
                return GetExitCodeThread(_thread, &ec) && ec == STILL_ACTIVE;
        }
        return false;
}


void ThreadImpl::threadCleanup()
{
        if (!_thread) return;
        if (CloseHandle(_thread)) _thread = 0;
}


ThreadImpl* ThreadImpl::currentImpl()
{
        return _currentThreadHolder.get();
}


ThreadImpl::TIDImpl ThreadImpl::currentTidImpl()
{
    return GetCurrentThreadId();
}


#if defined(_DLL)
DWORD WINAPI ThreadImpl::runnableEntry(LPVOID pThread)
#else
unsigned __stdcall ThreadImpl::runnableEntry(void* pThread)
#endif
{
        _currentThreadHolder.set(reinterpret_cast<ThreadImpl*>(pThread));
        try
        {
                reinterpret_cast<ThreadImpl*>(pThread)->_pRunnableTarget->run();
        }
        catch (Exception& exc)
        {
                ErrorHandler::handle(exc);
        }
        catch (std::exception& exc)
        {
                ErrorHandler::handle(exc);
        }
        catch (...)
        {
                ErrorHandler::handle();
        }
        return 0;
}


#if defined(_DLL)
DWORD WINAPI ThreadImpl::callableEntry(LPVOID pThread)
#else
unsigned __stdcall ThreadImpl::callableEntry(void* pThread)
#endif
{
        _currentThreadHolder.set(reinterpret_cast<ThreadImpl*>(pThread));
        try
        {
                ThreadImpl* pTI = reinterpret_cast<ThreadImpl*>(pThread);
                pTI->_callbackTarget.callback(pTI->_callbackTarget.pData);
        }
        catch (Exception& exc)
        {
                ErrorHandler::handle(exc);
        }
        catch (std::exception& exc)
        {
                ErrorHandler::handle(exc);
        }
        catch (...)
        {
                ErrorHandler::handle();
        }
        return 0;
}


} // namespace Poco