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"

deps/juce/modules/juce_events/messages/juce_DeletedAtShutdown.cpp

@@ -0,0 +1,89 @@
+/*
+  ==============================================================================
+
+   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
+{
+
+static SpinLock deletedAtShutdownLock; // use a spin lock because it can be statically initialised
+
+static Array<DeletedAtShutdown*>& getDeletedAtShutdownObjects()
+{
+    static Array<DeletedAtShutdown*> objects;
+    return objects;
+}
+
+DeletedAtShutdown::DeletedAtShutdown()
+{
+    const SpinLock::ScopedLockType sl (deletedAtShutdownLock);
+    getDeletedAtShutdownObjects().add (this);
+}
+
+DeletedAtShutdown::~DeletedAtShutdown()
+{
+    const SpinLock::ScopedLockType sl (deletedAtShutdownLock);
+    getDeletedAtShutdownObjects().removeFirstMatchingValue (this);
+}
+
+// Disable unreachable code warning, in case the compiler manages to figure out that
+// you have no classes of DeletedAtShutdown that could throw an exception in their destructor.
+JUCE_BEGIN_IGNORE_WARNINGS_MSVC (4702)
+
+void DeletedAtShutdown::deleteAll()
+{
+    // make a local copy of the array, so it can't get into a loop if something
+    // creates another DeletedAtShutdown object during its destructor.
+    Array<DeletedAtShutdown*> localCopy;
+
+    {
+        const SpinLock::ScopedLockType sl (deletedAtShutdownLock);
+        localCopy = getDeletedAtShutdownObjects();
+    }
+
+    for (int i = localCopy.size(); --i >= 0;)
+    {
+        JUCE_TRY
+        {
+            auto* deletee = localCopy.getUnchecked(i);
+
+            // double-check that it's not already been deleted during another object's destructor.
+            {
+                const SpinLock::ScopedLockType sl (deletedAtShutdownLock);
+
+                if (! getDeletedAtShutdownObjects().contains (deletee))
+                    deletee = nullptr;
+            }
+
+            delete deletee;
+        }
+        JUCE_CATCH_EXCEPTION
+    }
+
+    // if this fails, then it's likely that some new DeletedAtShutdown objects were
+    // created while executing the destructors of the other ones.
+    jassert (getDeletedAtShutdownObjects().isEmpty());
+
+    getDeletedAtShutdownObjects().clear(); // just to make sure the array doesn't have any memory still allocated
+}
+
+JUCE_END_IGNORE_WARNINGS_MSVC
+
+} // namespace juce