new trunk (base for 1.5)

windows build only

Foundation/src/Thread_VX.cpp

@@ -0,0 +1,295 @@
+//
+// Thread_VX.cpp
+//
+// $Id: //poco/1.4/Foundation/src/Thread_VX.cpp#1 $
+//
+// Library: Foundation
+// Package: Threading
+// Module:  Thread
+//
+// Copyright (c) 2004-2011, 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_VX.h"
+#include "Poco/ErrorHandler.h"
+#include "Poco/Exception.h"
+#include "Poco/Timestamp.h"
+#include "Poco/Timespan.h"
+#include <timers.h>
+
+
+namespace Poco {
+
+
+ThreadImpl* ThreadImpl::_pCurrent(0);
+
+
+ThreadImpl::ThreadImpl():
+	_pData(new ThreadData)
+{
+}
+
+			
+ThreadImpl::~ThreadImpl()
+{
+}
+
+
+void ThreadImpl::setPriorityImpl(int prio)
+{
+	if (prio != _pData->prio)
+	{
+		_pData->prio   = prio;
+		_pData->osPrio = mapPrio(_pData->prio);
+		if (isRunningImpl())
+		{
+			if (taskPrioritySet(_pData->task, _pData->osPrio) != OK)
+				throw SystemException("cannot set task priority");
+		}
+	}
+}
+
+
+void ThreadImpl::setOSPriorityImpl(int prio)
+{
+	if (prio != _pData->osPrio)
+	{
+		_pData->prio   = reverseMapPrio(prio);
+		_pData->osPrio = prio;
+		if (_pData->pRunnableTarget || _pData->pCallbackTarget)
+		{
+			if (taskPrioritySet(_pData->task, prio) != OK)
+				throw SystemException("cannot set task priority");
+		}
+	}
+}
+
+
+int ThreadImpl::getMinOSPriorityImpl()
+{
+	return 255;
+}
+
+
+int ThreadImpl::getMaxOSPriorityImpl()
+{
+	return 0;
+}
+
+
+void ThreadImpl::setStackSizeImpl(int size)
+{
+	_pData->stackSize = size;
+}
+
+
+void ThreadImpl::startImpl(Runnable& target)
+{
+	if (_pData->pRunnableTarget)
+		throw SystemException("thread already running");
+
+	_pData->pRunnableTarget = &target;
+	
+	int stackSize = _pData->stackSize == 0 ? DEFAULT_THREAD_STACK_SIZE : _pData->stackSize;
+	int id = taskSpawn(NULL, _pData->osPrio, VX_FP_TASK, stackSize, reinterpret_cast<FUNCPTR>(runnableEntry), reinterpret_cast<int>(this), 0, 0, 0, 0, 0, 0, 0, 0, 0);
+	if (id == ERROR)
+		throw SystemException("cannot spawn task");
+
+	_pData->task = id;
+}
+
+
+void ThreadImpl::startImpl(Callable target, void* pData)
+{
+	if (_pData->pCallbackTarget && _pData->pCallbackTarget->callback)
+		throw SystemException("thread already running");
+
+	if (0 == _pData->pCallbackTarget.get())
+		_pData->pCallbackTarget = new CallbackData;
+
+	_pData->pCallbackTarget->callback = target;
+	_pData->pCallbackTarget->pData = pData;
+
+	int stackSize = _pData->stackSize == 0 ? DEFAULT_THREAD_STACK_SIZE : _pData->stackSize;
+	int id = taskSpawn(NULL, _pData->osPrio, VX_FP_TASK, stackSize, reinterpret_cast<FUNCPTR>(callableEntry), reinterpret_cast<int>(this), 0, 0, 0, 0, 0, 0, 0, 0, 0);
+	if (id == ERROR)
+		throw SystemException("cannot spawn task");
+
+	_pData->task = id;
+}
+
+
+void ThreadImpl::joinImpl()
+{
+	_pData->done.wait();
+}
+
+
+bool ThreadImpl::joinImpl(long milliseconds)
+{
+	return _pData->done.tryWait(milliseconds);
+}
+
+
+ThreadImpl* ThreadImpl::currentImpl()
+{
+	return _pCurrent;
+}
+
+
+ThreadImpl::TIDImpl ThreadImpl::currentTidImpl()
+{
+    return taskIdSelf();
+}
+
+
+void ThreadImpl::sleepImpl(long milliseconds)
+{
+	Poco::Timespan remainingTime(1000*Poco::Timespan::TimeDiff(milliseconds));
+	int rc;
+	do
+	{
+		struct timespec ts;
+		ts.tv_sec  = (long) remainingTime.totalSeconds();
+		ts.tv_nsec = (long) remainingTime.useconds()*1000;
+		Poco::Timestamp start;
+		rc = ::nanosleep(&ts, 0);
+		if (rc < 0 && errno == EINTR)
+		{
+			Poco::Timestamp end;
+			Poco::Timespan waited = start.elapsed();
+			if (waited < remainingTime)
+				remainingTime -= waited;
+			else
+				remainingTime = 0;
+		}
+	}
+	while (remainingTime > 0 && rc < 0 && errno == EINTR);
+	if (rc < 0 && remainingTime > 0) throw Poco::SystemException("Thread::sleep(): nanosleep() failed");
+}
+
+
+void ThreadImpl::runnableEntry(void* pThread, int, int, int, int, int, int, int, int, int)
+{
+	taskVarAdd(0, reinterpret_cast<int*>(&_pCurrent));
+	_pCurrent = reinterpret_cast<ThreadImpl*>(pThread);
+
+	AutoPtr<ThreadData> pData = _pCurrent->_pData;
+	try
+	{
+		pData->pRunnableTarget->run();
+	}
+	catch (Exception& exc)
+	{
+		ErrorHandler::handle(exc);
+	}
+	catch (std::exception& exc)
+	{
+		ErrorHandler::handle(exc);
+	}
+	catch (...)
+	{
+		ErrorHandler::handle();
+	}
+
+	pData->pRunnableTarget = 0;
+	pData->done.set();
+}
+
+
+void ThreadImpl::callableEntry(void* pThread, int, int, int, int, int, int, int, int, int)
+{
+	taskVarAdd(0, reinterpret_cast<int*>(&_pCurrent));
+	_pCurrent = reinterpret_cast<ThreadImpl*>(pThread);
+
+	AutoPtr<ThreadData> pData = _pCurrent->_pData;
+	try
+	{
+		pData->pCallbackTarget->callback(pData->pCallbackTarget->pData);
+	}
+	catch (Exception& exc)
+	{
+		ErrorHandler::handle(exc);
+	}
+	catch (std::exception& exc)
+	{
+		ErrorHandler::handle(exc);
+	}
+	catch (...)
+	{
+		ErrorHandler::handle();
+	}
+
+	pData->pCallbackTarget->callback = 0;
+	pData->pCallbackTarget->pData = 0;
+	pData->done.set();
+}
+
+
+int ThreadImpl::mapPrio(int prio)
+{
+	int pmin = getMinOSPriorityImpl();
+	int pmax = getMaxOSPriorityImpl();
+
+	switch (prio)
+	{
+	case PRIO_LOWEST_IMPL:
+		return pmin;
+	case PRIO_LOW_IMPL:
+		return pmin + (pmax - pmin)/4;
+	case PRIO_NORMAL_IMPL:
+		return pmin + (pmax - pmin)/2;
+	case PRIO_HIGH_IMPL:
+		return pmin + 3*(pmax - pmin)/4;
+	case PRIO_HIGHEST_IMPL:
+		return pmax;
+	default:
+		poco_bugcheck_msg("invalid thread priority");
+	}
+	return -1; // just to satisfy compiler - we'll never get here anyway
+}
+
+
+int ThreadImpl::reverseMapPrio(int prio)
+{
+	int pmin = getMinOSPriorityImpl();
+	int pmax = getMaxOSPriorityImpl();
+	int normal = pmin + (pmax - pmin)/2;
+	if (prio == pmax)
+		return PRIO_HIGHEST_IMPL;
+	if (prio > normal)
+		return PRIO_HIGH_IMPL;
+	else if (prio == normal)
+		return PRIO_NORMAL_IMPL;
+	else if (prio > pmin)
+		return PRIO_LOW_IMPL;
+	else
+		return PRIO_LOWEST_IMPL;
+}
+
+
+} // namespace Poco