godot/thirdparty/icu4c/common/sharedobject.h

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
* Copyright (C) 2015-2016, International Business Machines
* Corporation and others.  All Rights Reserved.
******************************************************************************
* sharedobject.h
*/

#ifndef __SHAREDOBJECT_H__
#define __SHAREDOBJECT_H__


#include "unicode/uobject.h"
#include "umutex.h"

U_NAMESPACE_BEGIN

class SharedObject;

/**
 * Base class for unified cache exposing enough methods to SharedObject
 * instances to allow their addRef() and removeRef() methods to
 * update cache metrics. No other part of ICU, except for SharedObject,
 * should directly call the methods of this base class.
 */
class U_COMMON_API UnifiedCacheBase : public UObject { … };

/**
 * Base class for shared, reference-counted, auto-deleted objects.
 * Subclasses can be immutable.
 * If they are mutable, then they must implement their copy constructor
 * so that copyOnWrite() works.
 *
 * Either stack-allocate, use LocalPointer, or use addRef()/removeRef().
 * Sharing requires reference-counting.
 */
class U_COMMON_API SharedObject : public UObject { … };

U_NAMESPACE_END

#endif