Open Menu / libkern / c++ / OSCollection.cpp
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/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* IOArray.h created by rsulack on Thu 11-Sep-1997 */

#include <libkern/OSDebug.h>

#include <libkern/c++/OSCollection.h>
#include <libkern/c++/OSDictionary.h>

#include <IOKit/IOKitDebug.h>

#define super OSObject

OSDefineMetaClassAndAbstractStructors(OSCollection, OSObject)


OSMetaClassDefineReservedUsed(OSCollection, 0);
OSMetaClassDefineReservedUsed(OSCollection, 1);
OSMetaClassDefineReservedUnused(OSCollection, 2);
OSMetaClassDefineReservedUnused(OSCollection, 3);
OSMetaClassDefineReservedUnused(OSCollection, 4);
OSMetaClassDefineReservedUnused(OSCollection, 5);
OSMetaClassDefineReservedUnused(OSCollection, 6);
OSMetaClassDefineReservedUnused(OSCollection, 7);

bool OSCollection::init()
{
    if (!super::init())
        return false;

    updateStamp = 0;

    return true;
}

void OSCollection::haveUpdated()
{
    if ( (gIOKitDebug & kOSLogRegistryMods) && (fOptions & kImmutable) )
	OSReportWithBacktrace("Trying to change a collection in the registry");

    updateStamp++;
}

unsigned OSCollection::setOptions(unsigned options, unsigned mask, void *)
{
    unsigned old = fOptions;

    if (mask)
	fOptions = (old & ~mask) | (options & mask);

    return old;
}

OSCollection *  OSCollection::copyCollection(OSDictionary *cycleDict)
{
    if (cycleDict) {
	OSObject *obj = cycleDict->getObject((const OSSymbol *) this);
	if (obj)
	    obj->retain();

	return reinterpret_cast<OSCollection *>(obj);
    }
    else {
	// If we are here it means that there is a collection subclass that
	// hasn't overridden the copyCollection method.  In which case just
	// return a reference to ourselves.  
	// Hopefully this collection will not be inserted into the registry
	retain();
	return this;
    }
}