mirror of
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147 lines
5.5 KiB
C++
147 lines
5.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2020 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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// Copyright (C) 2021 Jon Beniston, M7RCE <jon@beniston.com> //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef SDRBASE_PIPES_ELEMNTPIPESGCWORKER_H_
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#define SDRBASE_PIPES_ELEMNTPIPESGCWORKER_H_
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#include <QMap>
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#include <QList>
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#include <QMutex>
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#include "elementpipescommon.h"
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template<typename Producer, typename Consumer, typename Element>
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class ElementPipesGC
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{
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public:
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ElementPipesGC() :
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m_mutex(nullptr),
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m_elements(nullptr),
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m_consumers(nullptr)
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{}
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~ElementPipesGC()
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{}
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void setRegistrations(
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QMutex *mutex,
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QMap<ElementPipesCommon::RegistrationKey<Producer>, QList<Element*>> *elements,
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QMap<ElementPipesCommon::RegistrationKey<Producer>, QList<Consumer*>> *consumers
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)
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{
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m_mutex = mutex;
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m_elements = elements;
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m_consumers = consumers;
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}
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void addElementToDelete(Element *element)
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{
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m_elementsToDelete.append(element);
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}
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void processGC()
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{
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if (m_mutex)
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{
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QMutexLocker mlock(m_mutex);
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typename QMap<ElementPipesCommon::RegistrationKey<Producer>, QList<Consumer*>>::iterator cIt = m_consumers->begin();
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// remove fifos to be deleted from last run
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for (typename QList<Element*>::iterator elIt = m_elementsToDelete.begin(); elIt != m_elementsToDelete.end(); ++elIt) {
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delete *elIt;
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}
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m_elementsToDelete.clear();
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// remove keys with empty features
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while (cIt != m_consumers->end())
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{
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if (cIt.value().size() == 0) {
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cIt = m_consumers->erase(cIt);
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} else {
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++cIt;
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}
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}
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// remove keys with empty fifos
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typename QMap<ElementPipesCommon::RegistrationKey<Producer>, QList<Element*>>::iterator elIt = m_elements->begin();
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while (elIt != m_elements->end())
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{
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if (elIt.value().size() == 0) {
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elIt = m_elements->erase(elIt);
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} else {
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++elIt;
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}
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}
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// check deleted channels and features
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cIt = m_consumers->begin();
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for (;cIt != m_consumers->end(); ++cIt)
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{
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ElementPipesCommon::RegistrationKey<Producer> producerKey = cIt.key();
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const Producer *producer = producerKey.m_key;
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if (existsProducer(producer)) // look for deleted features
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{
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QList<Consumer*>& consumers = cIt.value();
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int i = 0;
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while (i < consumers.size())
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{
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if (existsConsumer(consumers[i])) {
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i++;
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}
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else
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{
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consumers.removeAt(i);
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Element *element = m_elements->operator[](producerKey)[i];
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m_elementsToDelete.append(element);
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m_elements->operator[](producerKey).removeAt(i);
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}
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}
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}
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else // channel was destroyed
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{
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QList<Consumer*>& consumers = cIt.value();
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for (int i = 0; i < consumers.size(); i++) {
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if (existsConsumer(consumers[i]))
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sendMessageToConsumer(m_elements->operator[](producerKey)[i], producerKey, consumers[i]);
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}
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}
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}
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}
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}
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protected:
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virtual bool existsProducer(const Producer *producer) = 0;
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virtual bool existsConsumer(const Consumer *consumer) = 0;
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virtual void sendMessageToConsumer(const Element *element, ElementPipesCommon::RegistrationKey<Producer> producerKey, Consumer *consumer) = 0;
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private:
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QMutex *m_mutex;
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QMap<ElementPipesCommon::RegistrationKey<Producer>, QList<Element*>> *m_elements;
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QMap<ElementPipesCommon::RegistrationKey<Producer>, QList<Consumer*>> *m_consumers;
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QList<Element*> m_elementsToDelete;
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};
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#endif // SDRBASE_PIPES_ELEMNTPIPESGCWORKER_H_
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