You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
96 lines
3.3 KiB
96 lines
3.3 KiB
/*
|
|
* Copyright (C) 2007 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.
|
|
*/
|
|
|
|
import dalvik.system.VMRuntime;
|
|
import java.util.concurrent.CountDownLatch;
|
|
import static java.util.concurrent.TimeUnit.MINUTES;
|
|
|
|
/**
|
|
* Test a class with a bad finalizer in an environment with a short finalizer timeout.
|
|
*
|
|
* This test is inherently flaky. It assumes that the system will schedule the finalizer daemon
|
|
* and finalizer watchdog daemon enough to reach the timeout and throwing the fatal exception.
|
|
* Largely cloned from 030-bad-finalizer.
|
|
*/
|
|
public class Main {
|
|
public static void main(String[] args) throws Exception {
|
|
CountDownLatch finalizerWait = new CountDownLatch(1);
|
|
|
|
System.out.println("Finalizer timeout = "
|
|
+ VMRuntime.getRuntime().getFinalizerTimeoutMs() + " msecs.");
|
|
// A separate method to ensure no dex register keeps the object alive.
|
|
createBadFinalizer(finalizerWait);
|
|
|
|
for (int i = 0; i < 2; i++) {
|
|
Runtime.getRuntime().gc();
|
|
}
|
|
|
|
// Now wait for the finalizer to start running.
|
|
if (!finalizerWait.await(1, MINUTES)) {
|
|
System.out.println("finalizerWait timed out.");
|
|
}
|
|
|
|
// Sleep for less time than the default finalizer timeout, but significantly more than
|
|
// the new timeout plus the 5 seconds we wait to dump thread stacks before actually
|
|
// exiting.
|
|
snooze(9800);
|
|
|
|
// We should not get here, since it should only take 5.5 seconds for the timed out
|
|
// fiinalizer to kill the process.
|
|
System.out.println("UNREACHABLE");
|
|
System.exit(0);
|
|
}
|
|
|
|
private static void createBadFinalizer(CountDownLatch finalizerWait) {
|
|
BadFinalizer bf = new BadFinalizer(finalizerWait);
|
|
|
|
System.out.println("About to null reference.");
|
|
bf = null; // Not that this would make a difference, could be eliminated earlier.
|
|
}
|
|
|
|
public static void snooze(int ms) {
|
|
try {
|
|
Thread.sleep(ms);
|
|
} catch (InterruptedException ie) {
|
|
System.out.println("Snooze(" + ms + ") interrupted");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Class with a bad finalizer.
|
|
*/
|
|
public static class BadFinalizer {
|
|
private CountDownLatch finalizerWait;
|
|
private volatile int j = 0; // Volatile in an effort to curb loop optimization.
|
|
|
|
public BadFinalizer(CountDownLatch finalizerWait) {
|
|
this.finalizerWait = finalizerWait;
|
|
}
|
|
|
|
protected void finalize() {
|
|
System.out.println("Finalizer started and snoozing...");
|
|
finalizerWait.countDown();
|
|
snooze(200);
|
|
System.out.println("Finalizer done snoozing.");
|
|
|
|
System.out.println("Finalizer sleeping forever now.");
|
|
while (true) {
|
|
snooze(10000);
|
|
}
|
|
}
|
|
}
|
|
}
|