/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.vm.facade;
import java.io.IOException;
/**
* Heap statistical data collection.
*
* @author Martin Husted Hartvig (hagar@jnode.org)
*/
public interface HeapStatistics {
/**
* Sets the minimum number of instances a class must have before
* it is listed in toString.
*
* @param count
*/
void setMinimumInstanceCount(int count);
/**
* Sets the minimum bytes of occupied memory by all instances of a class
* before it is listed in toString.
*
* @param bytes
*/
void setMinimumTotalSize(long bytes);
/**
* Sets the object filter. If the filter accept the object,
* then it will be added to statistics.
* @param objectFilter
*
*/
void setObjectFilter(ObjectFilter objectFilter);
/**
* Write the statistical data to an {@link Appendable}.
*
* @param a
* @throws IOException
*/
void writeTo(Appendable a) throws IOException;
}