paulxstretch/deps/juce/modules/juce_events/native/juce_osx_MessageQueue.h
essej 25bd5d8adb git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce
subrepo:
  subdir:   "deps/juce"
  merged:   "b13f9084e"
upstream:
  origin:   "https://github.com/essej/JUCE.git"
  branch:   "sono6good"
  commit:   "b13f9084e"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"
2022-04-18 17:51:22 -04:00

105 lines
3.0 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.
The code included in this file is provided under the terms of the ISC license
http://www.isc.org/downloads/software-support-policy/isc-license. Permission
To use, copy, modify, and/or distribute this software for any purpose with or
without fee is hereby granted provided that the above copyright notice and
this permission notice appear in all copies.
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
namespace juce
{
//==============================================================================
/* An internal message pump class used in OSX and iOS. */
class MessageQueue
{
public:
MessageQueue()
{
#if JUCE_IOS
runLoop = CFRunLoopGetCurrent();
#else
runLoop = CFRunLoopGetMain();
#endif
CFRunLoopSourceContext sourceContext;
zerostruct (sourceContext); // (can't use "= { 0 }" on this object because it's typedef'ed as a C struct)
sourceContext.info = this;
sourceContext.perform = runLoopSourceCallback;
runLoopSource.reset (CFRunLoopSourceCreate (kCFAllocatorDefault, 1, &sourceContext));
CFRunLoopAddSource (runLoop, runLoopSource.get(), kCFRunLoopCommonModes);
}
~MessageQueue() noexcept
{
CFRunLoopRemoveSource (runLoop, runLoopSource.get(), kCFRunLoopCommonModes);
CFRunLoopSourceInvalidate (runLoopSource.get());
}
void post (MessageManager::MessageBase* const message)
{
messages.add (message);
wakeUp();
}
private:
ReferenceCountedArray<MessageManager::MessageBase, CriticalSection> messages;
CFRunLoopRef runLoop;
CFUniquePtr<CFRunLoopSourceRef> runLoopSource;
void wakeUp() noexcept
{
CFRunLoopSourceSignal (runLoopSource.get());
CFRunLoopWakeUp (runLoop);
}
bool deliverNextMessage()
{
const MessageManager::MessageBase::Ptr nextMessage (messages.removeAndReturn (0));
if (nextMessage == nullptr)
return false;
JUCE_AUTORELEASEPOOL
{
JUCE_TRY
{
nextMessage->messageCallback();
}
JUCE_CATCH_EXCEPTION
}
return true;
}
void runLoopCallback() noexcept
{
for (int i = 4; --i >= 0;)
if (! deliverNextMessage())
return;
wakeUp();
}
static void runLoopSourceCallback (void* info) noexcept
{
static_cast<MessageQueue*> (info)->runLoopCallback();
}
};
} // namespace juce