mirror of
https://github.com/qbittorrent/qBittorrent
synced 2025-07-12 16:23:07 -07:00
a5c531f0a4
Some linux distros seem to alter TMPDIR environment variable and therefore hamper qbt ability to find the lock files. So use config folder instead of TMPDIR folder to create/locate the lock files. Note that this change will also make qbt become one instance per-user instead of one instance per-system. Closes #15646.
84 lines
3 KiB
C++
84 lines
3 KiB
C++
/*
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* Bittorrent Client using Qt and libtorrent.
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* Copyright (C) 2019 Vladimir Golovnev <glassez@yandex.ru>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* In addition, as a special exception, the copyright holders give permission to
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* link this program with the OpenSSL project's "OpenSSL" library (or with
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* modified versions of it that use the same license as the "OpenSSL" library),
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* and distribute the linked executables. You must obey the GNU General Public
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* License in all respects for all of the code used other than "OpenSSL". If you
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* modify file(s), you may extend this exception to your version of the file(s),
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* but you are not obligated to do so. If you do not wish to do so, delete this
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* exception statement from your version.
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*/
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#include "applicationinstancemanager.h"
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#include <QtGlobal>
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#ifdef Q_OS_WIN
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#include <windows.h>
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#include <QDebug>
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#include <QSharedMemory>
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#endif
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#include "qtlocalpeer/qtlocalpeer.h"
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ApplicationInstanceManager::ApplicationInstanceManager(const QString &instancePath, QObject *parent)
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: QObject {parent}
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, m_peer {new QtLocalPeer {instancePath, this}}
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, m_isFirstInstance {!m_peer->isClient()}
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{
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connect(m_peer, &QtLocalPeer::messageReceived, this, &ApplicationInstanceManager::messageReceived);
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#ifdef Q_OS_WIN
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const QString sharedMemoryKey = instancePath + QLatin1String {"/shared-memory"};
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auto sharedMem = new QSharedMemory {sharedMemoryKey, this};
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if (m_isFirstInstance)
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{
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// First instance creates shared memory and store PID
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if (sharedMem->create(sizeof(DWORD)) && sharedMem->lock())
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{
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*(static_cast<DWORD *>(sharedMem->data())) = ::GetCurrentProcessId();
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sharedMem->unlock();
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}
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}
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else
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{
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// Later instances attach to shared memory and retrieve PID
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if (sharedMem->attach() && sharedMem->lock())
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{
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::AllowSetForegroundWindow(*(static_cast<DWORD *>(sharedMem->data())));
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sharedMem->unlock();
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}
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}
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if (!sharedMem->isAttached())
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qCritical() << "Failed to initialize shared memory: " << sharedMem->errorString();
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#endif
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}
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bool ApplicationInstanceManager::isFirstInstance() const
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{
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return m_isFirstInstance;
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}
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bool ApplicationInstanceManager::sendMessage(const QString &message, const int timeout)
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{
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return m_peer->sendMessage(message, timeout);
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}
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