/*
* Copyright (C) 2012 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.facebook.collections;
public interface SnapshotProvider<T> {
/**
* Make the latest snapshot.
*
* @return the latest snapshot of T
*/
public T makeSnapshot();
/**
* same as above, but the implementation may use alternative data structures
* to improve cpu efficiency over memory since the caller is indicating
* this copy will be short-lived
*
* @return
*/
public T makeTransientSnapshot();
}