mirror of
https://github.com/nzbget/nzbget.git
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135 lines
2.7 KiB
C++
135 lines
2.7 KiB
C++
/*
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* This file is part of nzbget. See <http://nzbget.net>.
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*
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* Copyright (C) 2004 Sven Henkel <sidddy@users.sourceforge.net>
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* Copyright (C) 2007-2019 Andrey Prygunkov <hugbug@users.sourceforge.net>
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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; either version 2 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 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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#include "nzbget.h"
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#include "Log.h"
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#include "Thread.h"
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int Thread::m_threadCount = 1; // take the main program thread into account
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std::unique_ptr<Mutex> Thread::m_threadMutex;
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void Thread::Init()
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{
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debug("Initializing global thread data");
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m_threadMutex = std::make_unique<Mutex>();
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}
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Thread::Thread()
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{
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debug("Creating Thread");
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}
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Thread::~Thread()
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{
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debug("Destroying Thread");
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}
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void Thread::Start()
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{
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debug("Starting Thread");
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m_running = true;
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// NOTE: "m_threadMutex" ensures that "t" lives until the very end of the function
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Guard guard(m_threadMutex);
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// start the new thread
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std::thread t([&]{
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{
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// trying to lock "m_threadMutex", this will wait until function "Start()" is completed
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// and "t" is detached.
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Guard guard(m_threadMutex);
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}
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thread_handler();
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});
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// save the native handle to be able to cancel (Kill) the thread and then detach
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m_threadObj = t.native_handle();
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t.detach();
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}
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void Thread::Stop()
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{
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debug("Stopping Thread");
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m_stopped = true;
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}
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void Thread::Resume()
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{
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debug("Resuming Thread");
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m_stopped = false;
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}
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bool Thread::Kill()
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{
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debug("Killing Thread");
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Guard guard(m_threadMutex);
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#ifdef WIN32
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bool terminated = TerminateThread(m_threadObj, 0) != 0;
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#else
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#ifdef HAVE_PTHREAD_CANCEL
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bool terminated = pthread_cancel(m_threadObj) == 0;
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#else
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bool terminated = false;
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warn("Could not kill thread: thread cancelling isn't supported on this platform");
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#endif
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#endif
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if (terminated)
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{
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m_threadCount--;
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}
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return terminated;
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}
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void Thread::thread_handler()
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{
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m_threadCount++;
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debug("Entering Thread-func");
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Run();
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debug("Thread-func exited");
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m_running = false;
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m_threadCount--;
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if (m_autoDestroy)
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{
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debug("Autodestroying Thread-object");
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delete this;
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}
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}
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int Thread::GetThreadCount()
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{
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Guard guard(m_threadMutex);
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return m_threadCount;
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}
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