1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.camera.one.v2.sharedimagereader.ticketpool;
18 
19 import com.android.camera.async.SafeCloseable;
20 
21 /**
22  * Tickets store the logical-ability to hold on to an instance of a managed,
23  * finite resource (e.g. hardware-backed media images).
24  * <p>
25  * They may be released by calling {@link #close}.
26  * <p>
27  */
28 public interface Ticket extends SafeCloseable {
29     /**
30      * Releases the ticket. Implementations must be idempotent.
31      */
32     @Override
close()33     public void close();
34 }
35