Autopsy  4.19.3
Graphical digital forensics platform for The Sleuth Kit and other tools.
IngestModuleReferenceCounter.java
Go to the documentation of this file.
1 /*
2  * Autopsy Forensic Browser
3  *
4  * Copyright 2011 - 2013 Basis Technology Corp.
5  * Contact: carrier <at> sleuthkit <dot> org
6  *
7  * Licensed under the Apache License, Version 2.0 (the "License");
8  * you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at
10  *
11  * http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing, software
14  * distributed under the License is distributed on an "AS IS" BASIS,
15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  * See the License for the specific language governing permissions and
17  * limitations under the License.
18  */
19 package org.sleuthkit.autopsy.ingest;
20 
21 import java.util.HashMap;
22 
30 
31  // Maps a JobId to the count of instances
32 
33  private HashMap<Long, Long> moduleRefCount = new HashMap<>();
34 
35  public synchronized long get(long jobId) {
36  return moduleRefCount.get(jobId);
37  }
38 
39  public synchronized long incrementAndGet(long jobId) {
40  long count = moduleRefCount.containsKey(jobId) ? moduleRefCount.get(jobId) : 0;
41  long nextCount = count + 1;
42  moduleRefCount.put(jobId, nextCount);
43  return nextCount;
44  }
45 
46  public synchronized long decrementAndGet(long jobId) {
47  if (moduleRefCount.containsKey(jobId)) {
48  long count = moduleRefCount.get(jobId);
49  if (--count == 0) {
50  moduleRefCount.remove(jobId);
51  } else {
52  moduleRefCount.put(jobId, count);
53  }
54  return count;
55  } else {
56  return -1;
57  }
58  }
59 }

Copyright © 2012-2022 Basis Technology. Generated on: Thu Sep 29 2022
This work is licensed under a Creative Commons Attribution-Share Alike 3.0 United States License.