mirror of
https://github.com/pocoproject/poco.git
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trunk: backport eventing from 1.4.3
This commit is contained in:
Marian Krivos
@@ -1,203 +1,203 @@
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//
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// TimedNotificationQueue.cpp
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//
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// $Id: //poco/1.3/Foundation/src/TimedNotificationQueue.cpp#5 $
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//
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// Library: Foundation
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// Package: Notifications
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// Module: TimedNotificationQueue
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//
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// Copyright (c) 2009, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Poco/TimedNotificationQueue.h"
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#include "Poco/Notification.h"
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#include <limits>
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namespace Poco {
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TimedNotificationQueue::TimedNotificationQueue()
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{
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}
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TimedNotificationQueue::~TimedNotificationQueue()
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{
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clear();
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}
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void TimedNotificationQueue::enqueueNotification(Notification::Ptr pNotification, Timestamp timestamp)
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{
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poco_check_ptr (pNotification);
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FastMutex::ScopedLock lock(_mutex);
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_nfQueue.insert(NfQueue::value_type(timestamp, pNotification));
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_nfAvailable.set();
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}
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Notification* TimedNotificationQueue::dequeueNotification()
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{
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FastMutex::ScopedLock lock(_mutex);
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NfQueue::iterator it = _nfQueue.begin();
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if (it != _nfQueue.end())
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{
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Timestamp::TimeDiff sleep = -it->first.elapsed();
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if (sleep <= 0)
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{
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Notification::Ptr pNf = it->second;
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_nfQueue.erase(it);
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return pNf.duplicate();
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}
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}
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return 0;
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}
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Notification* TimedNotificationQueue::waitDequeueNotification()
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{
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for (;;)
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{
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_mutex.lock();
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NfQueue::iterator it = _nfQueue.begin();
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if (it != _nfQueue.end())
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{
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_mutex.unlock();
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Timestamp::TimeDiff sleep = -it->first.elapsed();
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if (sleep <= 0)
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{
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return dequeueOne(it).duplicate();
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}
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else if (!wait(sleep))
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{
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return dequeueOne(it).duplicate();
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}
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else continue;
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}
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else
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{
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_mutex.unlock();
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}
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_nfAvailable.wait();
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}
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}
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Notification* TimedNotificationQueue::waitDequeueNotification(long milliseconds)
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{
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while (milliseconds >= 0)
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{
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_mutex.lock();
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NfQueue::iterator it = _nfQueue.begin();
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if (it != _nfQueue.end())
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{
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_mutex.unlock();
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Poco::Timestamp now;
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Timestamp::TimeDiff sleep = it->first - now;
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if (sleep <= 0)
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{
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return dequeueOne(it).duplicate();
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}
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else if (sleep <= 1000*Timestamp::TimeDiff(milliseconds))
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{
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if (!wait(sleep))
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{
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return dequeueOne(it).duplicate();
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}
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else
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{
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milliseconds -= static_cast<long>((now.elapsed() + 999)/1000);
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continue;
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}
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}
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}
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else
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{
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_mutex.unlock();
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}
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if (milliseconds > 0)
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{
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Poco::Timestamp now;
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_nfAvailable.tryWait(milliseconds);
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milliseconds -= static_cast<long>((now.elapsed() + 999)/1000);
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}
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else return 0;
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}
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return 0;
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}
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bool TimedNotificationQueue::wait(Timestamp::TimeDiff interval)
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{
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const Timestamp::TimeDiff MAX_SLEEP = 8*60*60*Timestamp::TimeDiff(1000000); // sleep at most 8 hours at a time
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while (interval > 0)
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{
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Timestamp now;
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Timestamp::TimeDiff sleep = interval <= MAX_SLEEP ? interval : MAX_SLEEP;
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if (_nfAvailable.tryWait(static_cast<long>((sleep + 999)/1000)))
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return true;
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interval -= now.elapsed();
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}
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return false;
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}
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bool TimedNotificationQueue::empty() const
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{
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FastMutex::ScopedLock lock(_mutex);
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return _nfQueue.empty();
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}
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int TimedNotificationQueue::size() const
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{
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FastMutex::ScopedLock lock(_mutex);
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return static_cast<int>(_nfQueue.size());
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}
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void TimedNotificationQueue::clear()
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{
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FastMutex::ScopedLock lock(_mutex);
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_nfQueue.clear();
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}
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Notification::Ptr TimedNotificationQueue::dequeueOne(NfQueue::iterator& it)
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{
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FastMutex::ScopedLock lock(_mutex);
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Notification::Ptr pNf = it->second;
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_nfQueue.erase(it);
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return pNf;
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}
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} // namespace Poco
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//
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// TimedNotificationQueue.cpp
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//
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// $Id: //poco/1.4/Foundation/src/TimedNotificationQueue.cpp#1 $
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//
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// Library: Foundation
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// Package: Notifications
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// Module: TimedNotificationQueue
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//
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// Copyright (c) 2009, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
|
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// this license (the "Software") to use, reproduce, display, distribute,
|
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// execute, and transmit the Software, and to prepare derivative works of the
|
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// Software, and to permit third-parties to whom the Software is furnished to
|
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// do so, all subject to the following:
|
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
|
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Poco/TimedNotificationQueue.h"
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#include "Poco/Notification.h"
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#include <limits>
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namespace Poco {
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TimedNotificationQueue::TimedNotificationQueue()
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{
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}
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TimedNotificationQueue::~TimedNotificationQueue()
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{
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clear();
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}
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void TimedNotificationQueue::enqueueNotification(Notification::Ptr pNotification, Timestamp timestamp)
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{
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poco_check_ptr (pNotification);
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FastMutex::ScopedLock lock(_mutex);
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_nfQueue.insert(NfQueue::value_type(timestamp, pNotification));
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_nfAvailable.set();
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}
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Notification* TimedNotificationQueue::dequeueNotification()
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{
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FastMutex::ScopedLock lock(_mutex);
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NfQueue::iterator it = _nfQueue.begin();
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if (it != _nfQueue.end())
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{
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Timestamp::TimeDiff sleep = -it->first.elapsed();
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if (sleep <= 0)
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{
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Notification::Ptr pNf = it->second;
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_nfQueue.erase(it);
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return pNf.duplicate();
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}
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}
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return 0;
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}
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Notification* TimedNotificationQueue::waitDequeueNotification()
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{
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for (;;)
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{
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_mutex.lock();
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NfQueue::iterator it = _nfQueue.begin();
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if (it != _nfQueue.end())
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{
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_mutex.unlock();
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Timestamp::TimeDiff sleep = -it->first.elapsed();
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if (sleep <= 0)
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{
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return dequeueOne(it).duplicate();
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}
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else if (!wait(sleep))
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{
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return dequeueOne(it).duplicate();
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}
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else continue;
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}
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else
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{
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_mutex.unlock();
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}
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_nfAvailable.wait();
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}
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}
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Notification* TimedNotificationQueue::waitDequeueNotification(long milliseconds)
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{
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while (milliseconds >= 0)
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{
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_mutex.lock();
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NfQueue::iterator it = _nfQueue.begin();
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if (it != _nfQueue.end())
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{
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_mutex.unlock();
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Poco::Timestamp now;
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Timestamp::TimeDiff sleep = it->first - now;
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if (sleep <= 0)
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{
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return dequeueOne(it).duplicate();
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}
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else if (sleep <= 1000*Timestamp::TimeDiff(milliseconds))
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{
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if (!wait(sleep))
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{
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return dequeueOne(it).duplicate();
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}
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else
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{
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milliseconds -= static_cast<long>((now.elapsed() + 999)/1000);
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continue;
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}
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}
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}
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else
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{
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_mutex.unlock();
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}
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if (milliseconds > 0)
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{
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Poco::Timestamp now;
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_nfAvailable.tryWait(milliseconds);
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milliseconds -= static_cast<long>((now.elapsed() + 999)/1000);
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}
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else return 0;
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}
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return 0;
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}
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bool TimedNotificationQueue::wait(Timestamp::TimeDiff interval)
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{
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const Timestamp::TimeDiff MAX_SLEEP = 8*60*60*Timestamp::TimeDiff(1000000); // sleep at most 8 hours at a time
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while (interval > 0)
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{
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Timestamp now;
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Timestamp::TimeDiff sleep = interval <= MAX_SLEEP ? interval : MAX_SLEEP;
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if (_nfAvailable.tryWait(static_cast<long>((sleep + 999)/1000)))
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return true;
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interval -= now.elapsed();
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}
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return false;
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}
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bool TimedNotificationQueue::empty() const
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{
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FastMutex::ScopedLock lock(_mutex);
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return _nfQueue.empty();
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}
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int TimedNotificationQueue::size() const
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{
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FastMutex::ScopedLock lock(_mutex);
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return static_cast<int>(_nfQueue.size());
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}
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void TimedNotificationQueue::clear()
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{
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FastMutex::ScopedLock lock(_mutex);
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_nfQueue.clear();
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}
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Notification::Ptr TimedNotificationQueue::dequeueOne(NfQueue::iterator& it)
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{
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FastMutex::ScopedLock lock(_mutex);
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Notification::Ptr pNf = it->second;
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_nfQueue.erase(it);
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return pNf;
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}
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} // namespace Poco
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