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//
// Thread_VX.cpp
//
// Library: Foundation
// Package: Threading
// Module: Thread
//
// Copyright (c) 2004-2011, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Thread_VX.h"
#include "Poco/ErrorHandler.h"
#include "Poco/Exception.h"
#include "Poco/Timestamp.h"
#include "Poco/Timespan.h"
#error #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, int /* policy */)
{
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(int /* policy */)
{
return 255;
}
int ThreadImpl::getMaxOSPriorityImpl(int /* policy */)
{
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 = ⌖
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
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