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103 lines
3.2 KiB
103 lines
3.2 KiB
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found at: www.gnu.org/licenses
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.juce.com for more information.
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==============================================================================
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*/
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#ifndef JUCE_OSX_MESSAGEQUEUE_H_INCLUDED
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#define JUCE_OSX_MESSAGEQUEUE_H_INCLUDED
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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 MAC_OS_X_VERSION_MIN_REQUIRED > MAC_OS_X_VERSION_10_4 && ! JUCE_IOS
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runLoop = CFRunLoopGetMain();
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#else
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runLoop = CFRunLoopGetCurrent();
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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 = CFRunLoopSourceCreate (kCFAllocatorDefault, 1, &sourceContext);
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CFRunLoopAddSource (runLoop, runLoopSource, kCFRunLoopCommonModes);
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}
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~MessageQueue()
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{
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CFRunLoopRemoveSource (runLoop, runLoopSource, kCFRunLoopCommonModes);
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CFRunLoopSourceInvalidate (runLoopSource);
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CFRelease (runLoopSource);
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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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CFRunLoopSourceSignal (runLoopSource);
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CFRunLoopWakeUp (runLoop);
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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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CFRunLoopSourceRef runLoopSource;
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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()
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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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CFRunLoopSourceSignal (runLoopSource);
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CFRunLoopWakeUp (runLoop);
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}
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static void runLoopSourceCallback (void* info)
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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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#endif // JUCE_OSX_MESSAGEQUEUE_H_INCLUDED
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