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/*
* Copyright (C) 2019 ~ 2020 UnionTech Software Technology Co.,Ltd
*
* Author: zyc <zyc@uniontech.com>
* Maintainer: zyc <zyc@uniontech.com>
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SHAREDMEMORYMANAGER_H
#define SHAREDMEMORYMANAGER_H
#include <QObject>
#include <mutex>
struct ShareMemoryInfo {
bool isStart = true ;
};
class QSharedMemory;
class SharedMemoryManager : public QObject
{
public:
static SharedMemoryManager *instance()
{
SharedMemoryManager *sin = m_instance.load();
if (!sin) {
std::lock_guard<std::mutex> lock(m_mutex);
sin = m_instance.load();
if (!sin) {
sin = new SharedMemoryManager();
m_instance.store(sin);
}
}
return sin;
}
void setRunnableTag(ShareMemoryInfo iShareInfo);
QString getRunnableKey();
bool isAttached();
void releaseMemory();
protected:
explicit SharedMemoryManager(QObject *parent = nullptr);
void init();
private:
static std::atomic<SharedMemoryManager *> m_instance;
static std::mutex m_mutex;
QSharedMemory *m_commondM = nullptr;
ShareMemoryInfo *m_pShareMemoryInfo = nullptr;
};
#endif // SHAREDMEMORYMANAGER_H
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