ConcurrentMarkingDelegate.cpp

/*******************************************************************************
 * Copyright IBM Corp. and others 2017
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
 * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
 * or the Apache License, Version 2.0 which accompanies this distribution
 * and is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License, v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception [1] and GNU General Public
 * License, version 2 with the OpenJDK Assembly Exception [2].
 *
 * [1] https://www.gnu.org/software/classpath/license.html
 * [2] https://openjdk.org/legal/assembly-exception.html
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
 *******************************************************************************/

#include "ConcurrentMarkingDelegate.hpp"
#if defined(OMR_GC_MODRON_CONCURRENT_MARK)
#include "ConcurrentGC.hpp"
#include "MarkingScheme.hpp"

bool
MM_ConcurrentMarkingDelegate::initialize(MM_EnvironmentBase *env, MM_ConcurrentGC *collector)
{
	MM_GCExtensionsBase *extensions = env->getExtensions();
	_objectModel = &(extensions->objectModel);
	_markingScheme = collector->getMarkingScheme();
	_collector = collector;
	return true;
}

uintptr_t
MM_ConcurrentMarkingDelegate::collectRoots(MM_EnvironmentBase *env, uintptr_t concurrentStatus, bool *collectedRoots, bool *paidTax)
{
	uintptr_t bytesScanned = 0;
	*collectedRoots = true;
	*paidTax = true;

	switch (concurrentStatus) {
	case CONCURRENT_ROOT_TRACING1:
		_markingScheme->markLiveObjectsRoots(env);
		break;
	default:
		Assert_MM_unreachable();
	}

	return bytesScanned;
}
#endif /* defined(OMR_GC_MODRON_CONCURRENT_MARK) */