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JUCE/modules/juce_audio_plugin_client/utility/juce_LinuxMessageThread.h
2021-09-29 16:11:30 +01:00

104 lines
2.5 KiB
C++

/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2020 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 6 End-User License
Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
End User License Agreement: www.juce.com/juce-6-licence
Privacy Policy: www.juce.com/juce-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
#if JUCE_LINUX || JUCE_BSD
#include <thread>
namespace juce
{
// Implemented in juce_linux_Messaging.cpp
bool dispatchNextMessageOnSystemQueue (bool returnIfNoPendingMessages);
/** @internal */
class MessageThread
{
public:
MessageThread()
{
start();
}
~MessageThread()
{
MessageManager::getInstance()->stopDispatchLoop();
stop();
}
void start()
{
if (isRunning())
stop();
shouldExit = false;
thread = std::thread { [this]
{
Thread::setCurrentThreadPriority (7);
Thread::setCurrentThreadName ("JUCE Plugin Message Thread");
MessageManager::getInstance()->setCurrentThreadAsMessageThread();
XWindowSystem::getInstance();
threadInitialised.signal();
for (;;)
{
if (! dispatchNextMessageOnSystemQueue (true))
Thread::sleep (1);
if (shouldExit)
break;
}
} };
threadInitialised.wait();
}
void stop()
{
if (! isRunning())
return;
shouldExit = true;
thread.join();
}
bool isRunning() const noexcept { return thread.joinable(); }
private:
WaitableEvent threadInitialised;
std::thread thread;
std::atomic<bool> shouldExit { false };
JUCE_DECLARE_NON_MOVEABLE (MessageThread)
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MessageThread)
};
} // namespace juce
#endif