blob: eed3c6116bd2ab596668bb2adee09641ea93d349 [file] [log] [blame]
/*
* Copyright (C) 2017 The Android Open Source Project
*
* 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.
*/
public class Main {
static volatile boolean done = false;
public static void main(String[] args) {
// Run a thread for 30 seconds, allocating memory and triggering garbage
// collection.
// Time is limited to 30 seconds to not make this test too long. The test used
// to trigger the failure around 1 every 10 runs.
Thread t = new Thread() {
public void run() {
long time = System.currentTimeMillis();
while (System.currentTimeMillis() - time < 30000) {
for (int j = 0; j < 10000; j++) {
o = new Object[1000];
}
Runtime.getRuntime().gc();
Thread.yield();
}
Main.done = true;
}
Object o;
};
// Make the thread a daemon to quit early in case of an
// exception thrown below.
t.setDaemon(true);
t.start();
// Run 'foo' as long as the test runs.
while (!done) {
double res = foo(staticMain);
if (res != 529.0) {
throw new Error("Unexpected result " + res);
}
}
}
public static double foo(Main main) {
// Use up all D registers on arm64.
double d1 = main.field1;
double d2 = main.field2;
double d3 = main.field3;
double d4 = main.field4;
double d5 = main.field5;
double d6 = main.field6;
double d7 = main.field7;
double d8 = main.field8;
double d9 = main.field9;
double d10 = main.field10;
double d11 = main.field11;
double d12 = main.field12;
double d13 = main.field13;
double d14 = main.field14;
double d15 = main.field15;
double d16 = main.field16;
double d17 = main.field17;
double d18 = main.field18;
double d19 = main.field19;
double d20 = main.field20;
double d21 = main.field21;
double d22 = main.field22;
double d23 = main.field23;
double d24 = main.field24;
double d25 = main.field25;
double d26 = main.field26;
double d27 = main.field27;
double d28 = main.field28;
double d29 = main.field29;
double d30 = main.field30;
double d31 = main.field31;
double d32 = main.field32;
// Trigger a read barrier. This used to make the test trip on ARM64 as
// the read barrier stub used to not restore the D registers.
double p = main.objectField.field1;
return p + d1 + d2 + d3 + d4 + d5 + d6 + d7 + d8 + d9 + d10 + d11 + d12 +
d13 + d14 + d15 + d16 + d17 + d18 + d19 + d20 + d21 + d22 + d23 + d24 +
d25 + d26 + d27 + d28 + d29 + d30 + d31 + d32;
}
// Initialize objects here and not in 'main' to avoid having
// these objects in roots.
public static Main staticMain = new Main();
static {
staticMain.objectField = new Main();
}
public Main objectField;
public double field1 = 1.0;
public double field2 = 2.0;
public double field3 = 3.0;
public double field4 = 4.0;
public double field5 = 5.0;
public double field6 = 6.0;
public double field7 = 7.0;
public double field8 = 8.0;
public double field9 = 9.0;
public double field10 = 10.0;
public double field11 = 11.0;
public double field12 = 12.0;
public double field13 = 13.0;
public double field14 = 14.0;
public double field15 = 15.0;
public double field16 = 16.0;
public double field17 = 17.0;
public double field18 = 18.0;
public double field19 = 19.0;
public double field20 = 20.0;
public double field21 = 21.0;
public double field22 = 22.0;
public double field23 = 23.0;
public double field24 = 24.0;
public double field25 = 25.0;
public double field26 = 26.0;
public double field27 = 27.0;
public double field28 = 28.0;
public double field29 = 29.0;
public double field30 = 30.0;
public double field31 = 31.0;
public double field32 = 32.0;
}