xref: /aosp_15_r20/art/test/148-multithread-gc-annotations/src/MovingGCThread.java (revision 795d594fd825385562da6b089ea9b2033f3abf5a)
1*795d594fSAndroid Build Coastguard Worker /*
2*795d594fSAndroid Build Coastguard Worker  * Copyright (C) 2016 The Android Open Source Project
3*795d594fSAndroid Build Coastguard Worker  *
4*795d594fSAndroid Build Coastguard Worker  * Licensed under the Apache License, Version 2.0 (the "License");
5*795d594fSAndroid Build Coastguard Worker  * you may not use this file except in compliance with the License.
6*795d594fSAndroid Build Coastguard Worker  * You may obtain a copy of the License at
7*795d594fSAndroid Build Coastguard Worker  *
8*795d594fSAndroid Build Coastguard Worker  *      http://www.apache.org/licenses/LICENSE-2.0
9*795d594fSAndroid Build Coastguard Worker  *
10*795d594fSAndroid Build Coastguard Worker  * Unless required by applicable law or agreed to in writing, software
11*795d594fSAndroid Build Coastguard Worker  * distributed under the License is distributed on an "AS IS" BASIS,
12*795d594fSAndroid Build Coastguard Worker  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13*795d594fSAndroid Build Coastguard Worker  * See the License for the specific language governing permissions and
14*795d594fSAndroid Build Coastguard Worker  * limitations under the License.
15*795d594fSAndroid Build Coastguard Worker  */
16*795d594fSAndroid Build Coastguard Worker 
17*795d594fSAndroid Build Coastguard Worker import java.util.TreeMap;
18*795d594fSAndroid Build Coastguard Worker 
19*795d594fSAndroid Build Coastguard Worker public class MovingGCThread implements Runnable {
20*795d594fSAndroid Build Coastguard Worker     private static TreeMap treeMap = new TreeMap();
21*795d594fSAndroid Build Coastguard Worker 
run()22*795d594fSAndroid Build Coastguard Worker     public void run() {
23*795d594fSAndroid Build Coastguard Worker         for (int i = 0; i < 20; i++) {
24*795d594fSAndroid Build Coastguard Worker             testHomogeneousCompaction();
25*795d594fSAndroid Build Coastguard Worker         }
26*795d594fSAndroid Build Coastguard Worker     }
27*795d594fSAndroid Build Coastguard Worker 
testHomogeneousCompaction()28*795d594fSAndroid Build Coastguard Worker     public static void testHomogeneousCompaction() {
29*795d594fSAndroid Build Coastguard Worker         final boolean supportHSC = supportHomogeneousSpaceCompact();
30*795d594fSAndroid Build Coastguard Worker         if (!supportHSC) {
31*795d594fSAndroid Build Coastguard Worker             return;
32*795d594fSAndroid Build Coastguard Worker         }
33*795d594fSAndroid Build Coastguard Worker         Object o = new Object();
34*795d594fSAndroid Build Coastguard Worker         long addressBefore = objectAddress(o);
35*795d594fSAndroid Build Coastguard Worker         allocateStuff();
36*795d594fSAndroid Build Coastguard Worker         final boolean success = performHomogeneousSpaceCompact();
37*795d594fSAndroid Build Coastguard Worker         allocateStuff();
38*795d594fSAndroid Build Coastguard Worker         if (!success) {
39*795d594fSAndroid Build Coastguard Worker             System.out.println("error: Expected " + supportHSC + " but got " + success);
40*795d594fSAndroid Build Coastguard Worker         }
41*795d594fSAndroid Build Coastguard Worker         allocateStuff();
42*795d594fSAndroid Build Coastguard Worker         long addressAfter = objectAddress(o);
43*795d594fSAndroid Build Coastguard Worker         // This relies on the compaction copying from one space to another space and there being
44*795d594fSAndroid Build Coastguard Worker         // no overlap.
45*795d594fSAndroid Build Coastguard Worker         if (addressBefore == addressAfter) {
46*795d594fSAndroid Build Coastguard Worker             System.out.println("error: Expected different adddress " + addressBefore + " vs " +
47*795d594fSAndroid Build Coastguard Worker                     addressAfter);
48*795d594fSAndroid Build Coastguard Worker         }
49*795d594fSAndroid Build Coastguard Worker     }
50*795d594fSAndroid Build Coastguard Worker 
allocateStuff()51*795d594fSAndroid Build Coastguard Worker     private static void allocateStuff() {
52*795d594fSAndroid Build Coastguard Worker         for (int i = 0; i < 1000; ++i) {
53*795d594fSAndroid Build Coastguard Worker             Object o = new Object();
54*795d594fSAndroid Build Coastguard Worker             treeMap.put(o.hashCode(), o);
55*795d594fSAndroid Build Coastguard Worker         }
56*795d594fSAndroid Build Coastguard Worker     }
57*795d594fSAndroid Build Coastguard Worker 
58*795d594fSAndroid Build Coastguard Worker     // Methods to get access to ART internals.
supportHomogeneousSpaceCompact()59*795d594fSAndroid Build Coastguard Worker     private static native boolean supportHomogeneousSpaceCompact();
performHomogeneousSpaceCompact()60*795d594fSAndroid Build Coastguard Worker     private static native boolean performHomogeneousSpaceCompact();
objectAddress(Object object)61*795d594fSAndroid Build Coastguard Worker     private static native long objectAddress(Object object);
62*795d594fSAndroid Build Coastguard Worker }
63