VMThreadMonitorRecordSlotIterator.cpp

/*******************************************************************************
 * Copyright IBM Corp. and others 1991
 *
 * 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
 *******************************************************************************/

/**
 * @file
 * @ingroup GC_Structs
 */

#include "j9.h"
#include "j9cfg.h"

#if defined(J9VM_INTERP_HOT_CODE_REPLACEMENT)

#include "VMThreadMonitorRecordSlotIterator.hpp"

/**
 * @return the next monitor record slot in the thread
 * @return NULL if there are no more such slots
 */
j9object_t *
GC_VMThreadMonitorRecordSlotIterator::nextSlot()
{
	if(_monitorRecord != NULL) {
		J9MonitorEnterRecord *currentMonitorRecord = _monitorRecord;
		_monitorRecord = currentMonitorRecord->next;
		return &currentMonitorRecord->object;
	} else if (_jniMonitorRecord != NULL) {
		J9MonitorEnterRecord *currentMonitorRecord = _jniMonitorRecord;
		_jniMonitorRecord = currentMonitorRecord->next;
		return &currentMonitorRecord->object;
	}
	return NULL;
}

#endif /* J9VM_INTERP_HOT_CODE_REPLACEMENT */