mirror of
https://github.com/juce-framework/JUCE.git
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116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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//==============================================================================
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/* An internal message pump class used in OSX and iOS. */
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class MessageQueue
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{
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public:
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MessageQueue()
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{
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#if JUCE_IOS
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runLoop = CFRunLoopGetCurrent();
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#else
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runLoop = CFRunLoopGetMain();
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#endif
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CFRunLoopSourceContext sourceContext;
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zerostruct (sourceContext); // (can't use "= { 0 }" on this object because it's typedef'ed as a C struct)
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sourceContext.info = this;
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sourceContext.perform = runLoopSourceCallback;
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runLoopSource.reset (CFRunLoopSourceCreate (kCFAllocatorDefault, 1, &sourceContext));
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CFRunLoopAddSource (runLoop, runLoopSource.get(), kCFRunLoopCommonModes);
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}
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~MessageQueue() noexcept
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{
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CFRunLoopRemoveSource (runLoop, runLoopSource.get(), kCFRunLoopCommonModes);
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CFRunLoopSourceInvalidate (runLoopSource.get());
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}
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void post (MessageManager::MessageBase* const message)
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{
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messages.add (message);
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wakeUp();
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}
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private:
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ReferenceCountedArray<MessageManager::MessageBase, CriticalSection> messages;
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CFRunLoopRef runLoop;
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CFUniquePtr<CFRunLoopSourceRef> runLoopSource;
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void wakeUp() noexcept
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{
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CFRunLoopSourceSignal (runLoopSource.get());
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CFRunLoopWakeUp (runLoop);
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}
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bool deliverNextMessage()
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{
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const MessageManager::MessageBase::Ptr nextMessage (messages.removeAndReturn (0));
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if (nextMessage == nullptr)
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return false;
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JUCE_AUTORELEASEPOOL
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{
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JUCE_TRY
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{
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nextMessage->messageCallback();
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}
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JUCE_CATCH_EXCEPTION
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}
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return true;
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}
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void runLoopCallback() noexcept
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{
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for (int i = 4; --i >= 0;)
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if (! deliverNextMessage())
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return;
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wakeUp();
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}
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static void runLoopSourceCallback (void* info) noexcept
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{
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static_cast<MessageQueue*> (info)->runLoopCallback();
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}
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};
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} // namespace juce
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