/*
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
package com.facebook.common.memory;
/**
* A class which keeps a list of other classes to be notified of system memory events.
*
* <p>If a class uses a lot of memory and needs these notices from the system, it should implement
* the {@link MemoryTrimmable} interface.
*
* <p>Implementations of this class should notify all the trimmables that have registered with it
* when they need to trim their memory usage.
*/
public interface MemoryTrimmableRegistry {
/** Register an object. */
void registerMemoryTrimmable(MemoryTrimmable trimmable);
/** Unregister an object. */
void unregisterMemoryTrimmable(MemoryTrimmable trimmable);
}