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      1 /*
      2  * Copyright (C) 2016 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.bugreport.stacks;
     18 
     19 import java.util.ArrayList;
     20 
     21 /**
     22  * Represents an instance of a held lock (java monitor object) in a thread.
     23  */
     24 public class LockSnapshot implements Comparable<LockSnapshot> {
     25     public static final int LOCKED = 1;
     26     public static final int WAITING = 2;
     27     public static final int SLEEPING = 4;
     28     public static final int BLOCKED = 8;
     29 
     30     public static final int ANY = LOCKED | WAITING | SLEEPING | BLOCKED;
     31 
     32     public int type;
     33     public String address;
     34     public String packageName;
     35     public String className;
     36     public int threadId = -1;
     37 
     38     public LockSnapshot() {
     39     }
     40 
     41     public LockSnapshot(LockSnapshot that) {
     42         this.type = that.type;
     43         this.address = that.address;
     44         this.packageName = that.packageName;
     45         this.className = that.className;
     46         this.threadId = that.threadId;
     47     }
     48 
     49     @Override
     50     public LockSnapshot clone() {
     51         return new LockSnapshot(this);
     52     }
     53 
     54     public boolean equals(LockSnapshot that) {
     55         return this.address == that.address
     56                 || (this.address != null && that.address != null
     57                     && this.address.equals(that.address));
     58     }
     59 
     60     @Override
     61     public int hashCode() {
     62         int hash = 7;
     63         if (this.address != null) {
     64             hash = hash * 31 + this.address.hashCode();
     65         }
     66         return hash;
     67     }
     68 
     69     public int compareTo(LockSnapshot that) {
     70         if (this.address == that.address) {
     71             return 0;
     72         } else if (this.address == null) {
     73             return -1;
     74         } else if (that.address == null) {
     75             return 1;
     76         } else {
     77             return this.address.compareTo(that.address);
     78         }
     79     }
     80 
     81 }
     82 
     83