mirror of
https://github.com/juce-framework/JUCE.git
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97 lines
3.5 KiB
C++
97 lines
3.5 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2016 - ROLI Ltd.
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Permission is granted to use this software under the terms of the ISC license
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http://www.isc.org/downloads/software-support-policy/isc-license/
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH REGARD
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TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT,
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OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
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USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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OF THIS SOFTWARE.
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-----------------------------------------------------------------------------
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To release a closed-source product which uses other parts of JUCE not
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licensed under the ISC terms, commercial licenses are available: visit
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www.juce.com for more information.
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==============================================================================
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*/
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static SpinLock deletedAtShutdownLock; // use a spin lock because it can be statically initialised
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static Array<DeletedAtShutdown*>& getDeletedAtShutdownObjects()
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{
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static Array<DeletedAtShutdown*> objects;
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return objects;
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}
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DeletedAtShutdown::DeletedAtShutdown()
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{
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const SpinLock::ScopedLockType sl (deletedAtShutdownLock);
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getDeletedAtShutdownObjects().add (this);
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}
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DeletedAtShutdown::~DeletedAtShutdown()
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{
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const SpinLock::ScopedLockType sl (deletedAtShutdownLock);
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getDeletedAtShutdownObjects().removeFirstMatchingValue (this);
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}
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#if JUCE_MSVC
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// Disable unreachable code warning, in case the compiler manages to figure out that
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// you have no classes of DeletedAtShutdown that could throw an exception in their destructor.
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#pragma warning (push)
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#pragma warning (disable: 4702)
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#endif
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void DeletedAtShutdown::deleteAll()
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{
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// make a local copy of the array, so it can't get into a loop if something
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// creates another DeletedAtShutdown object during its destructor.
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Array<DeletedAtShutdown*> localCopy;
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{
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const SpinLock::ScopedLockType sl (deletedAtShutdownLock);
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localCopy = getDeletedAtShutdownObjects();
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}
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for (int i = localCopy.size(); --i >= 0;)
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{
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JUCE_TRY
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{
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auto* deletee = localCopy.getUnchecked(i);
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// double-check that it's not already been deleted during another object's destructor.
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{
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const SpinLock::ScopedLockType sl (deletedAtShutdownLock);
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if (! getDeletedAtShutdownObjects().contains (deletee))
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deletee = nullptr;
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}
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delete deletee;
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}
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JUCE_CATCH_EXCEPTION
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}
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// if this fails, then it's likely that some new DeletedAtShutdown objects were
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// created while executing the destructors of the other ones.
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jassert (getDeletedAtShutdownObjects().isEmpty());
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getDeletedAtShutdownObjects().clear(); // just to make sure the array doesn't have any memory still allocated
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}
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#if JUCE_MSVC
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#pragma warning (pop)
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#endif
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