org.glassfish.grizzly.memory.MemoryProbe Maven / Gradle / Ivy
/*
* Copyright (c) 2010, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-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, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.grizzly.memory;
/**
* {@link MemoryManager} monitoring probe.
*
* @author Alexey Stashok
*/
public interface MemoryProbe {
/**
* Called by {@link MemoryManager}, when new buffer gets allocated
*
* @param size buffer size
*/
void onBufferAllocateEvent(int size);
/**
* Called by {@link MemoryManager}, when buffer gets allocated from some pool
*
* @param size buffer size
*/
void onBufferAllocateFromPoolEvent(int size);
/**
* Called by {@link MemoryManager}, when buffer gets released into a buffer pool
*
* @param size buffer size
*/
void onBufferReleaseToPoolEvent(int size);
// ---------------------------------------------------------- Nested Classes
/**
* {@link MemoryProbe} adapter that provides no-op implementations for all interface methods allowing easy extension by
* the developer.
*
* @since 2.1.9
*/
@SuppressWarnings("UnusedDeclaration")
class Adapter implements MemoryProbe {
// -------------------------------------------- Methods from MemoryProbe
/**
* {@inheritDoc}
*/
@Override
public void onBufferAllocateEvent(int size) {
}
/**
* {@inheritDoc}
*/
@Override
public void onBufferAllocateFromPoolEvent(int size) {
}
/**
* {@inheritDoc}
*/
@Override
public void onBufferReleaseToPoolEvent(int size) {
}
} // END Adapter
}