| /* |
| * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @key stress gc |
| * |
| * @summary converted from VM Testbase gc/gctests/FinalizeTest01. |
| * VM Testbase keywords: [gc, stress, stressopt, nonconcurrent, monitoring] |
| * |
| * @library /vmTestbase |
| * /test/lib |
| * @run driver jdk.test.lib.FileInstaller . . |
| * @run main/othervm -XX:-UseGCOverheadLimit gc.gctests.FinalizeTest01.FinalizeTest01 |
| */ |
| |
| package gc.gctests.FinalizeTest01; |
| |
| import java.lang.management.ManagementFactory; |
| import java.lang.management.MemoryMXBean; |
| import nsk.share.gc.*; |
| import nsk.share.TestFailure; |
| import nsk.share.test.ExecutionController; |
| import nsk.share.test.Stresser; |
| |
| /** |
| * Tests that GC works correctly with finalizers. |
| * |
| * Create a number of objects, some of which register their |
| * creation/finalization. Then try to eat available memory |
| * which forces garbage collection of created objects. |
| * Garbage collector should try to collect the garbage and thus |
| * call finalizers. The test checks that all finalizers have been called. |
| */ |
| |
| /* |
| Reworked original test (4933478). Original comment: |
| |
| Tests that objects w/finalizers will eventually finalize |
| (and by the way, the system doesn't crash!). |
| |
| Returns exit code 0 on success, and 1 on failure. |
| |
| */ |
| /** |
| * Class with finalizer that throws Exception. |
| * Used for FinalizeTest02 |
| */ |
| class FinExceptMemoryObject extends FinMemoryObject { |
| |
| public FinExceptMemoryObject(int size) { |
| super(size); |
| } |
| |
| protected void finalize() { |
| super.finalize(); |
| throw new RuntimeException("Exception in finalizer"); |
| } |
| } |
| |
| public class FinalizeTest01 extends GCTestBase { |
| |
| private final int allocRatio = 5; |
| private final int size = 1024 * 2; |
| private int count = 1000; |
| private static boolean throwExceptions = false; |
| private ExecutionController stresser; |
| |
| private void runOne() { |
| Object o; |
| for (int i = 0; i < count; i++) { |
| if (i % allocRatio == 0) { |
| if (throwExceptions) { |
| o = new FinExceptMemoryObject(size); |
| } else { |
| o = new FinMemoryObject(size); |
| } |
| } else { |
| o = new byte[size - Memory.getObjectExtraSize()]; |
| } |
| } |
| o = null; |
| |
| MemoryMXBean mbean = ManagementFactory.getMemoryMXBean(); |
| long finalizationMaxTime = 1000 * 60; // 1min |
| |
| /* Provoke GC to start finalization. */ |
| Algorithms.eatMemory(stresser); |
| if (!stresser.continueExecution()) { |
| // we did not eat all memory |
| return; |
| } |
| long waitTime = System.currentTimeMillis() + finalizationMaxTime; |
| |
| /* |
| * Before we force finalization it is needed to check that we have |
| * any object pending for finazlization. If not then is a GC bug. |
| */ |
| while (FinMemoryObject.getFinalizedCount() |
| + mbean.getObjectPendingFinalizationCount() == 0 |
| && (System.currentTimeMillis() < waitTime)) { |
| System.out.println("No objects are found in the finalization queue. Waiting.."); |
| try { |
| Thread.sleep(1000); |
| } catch (InterruptedException ie) { |
| } |
| } |
| if (FinMemoryObject.getFinalizedCount() |
| + mbean.getObjectPendingFinalizationCount() == 0) { |
| throw new TestFailure("Test failed. (No objects were not queued for finalization during 1min)"); |
| } |
| |
| /* force finalization and wait for it finishs */ |
| Runtime.getRuntime().runFinalization(); |
| |
| boolean error = (FinMemoryObject.getLiveCount() != 0); |
| |
| /* |
| * The runFinalization() starts the second finalization thread and wait until it finishs. |
| * However it is a very little probability (less then 1%) that not all object are finalized yet. |
| * Possibly the regular Finalizer thread have not finished its work when we check getLiveCount() |
| * or GC is still clearing memory and adding objects to the queue. |
| */ |
| waitTime = System.currentTimeMillis() + finalizationMaxTime; |
| while (error && (System.currentTimeMillis() < waitTime)) { |
| // wait 1 sec (it could be less due to potential InterruptedException) |
| try { |
| Thread.sleep(1000); |
| } catch (InterruptedException ie) { |
| } |
| error = (FinMemoryObject.getLiveCount() != 0); |
| } |
| |
| if (error) { |
| throw new TestFailure("Test failed (objects were not finalized during 1min)"); |
| } |
| |
| |
| System.out.println("Allocated: " + FinMemoryObject.getAllocatedCount()); |
| System.out.println("Finalized: " + FinMemoryObject.getFinalizedCount()); |
| error = (FinMemoryObject.getLiveCount() != 0); |
| if (error) { |
| throw new TestFailure("Test failed."); |
| } |
| } |
| |
| public void run() { |
| stresser = new Stresser(runParams.getStressOptions()); |
| stresser.start(runParams.getIterations()); |
| count = (int) Math.min(runParams.getTestMemory() / size, Integer.MAX_VALUE); |
| System.out.println("Allocating " + count |
| + " objects. 1 out of " + allocRatio |
| + " will have a finalizer."); |
| System.out.flush(); |
| runOne(); |
| } |
| |
| public static void main(String[] args) { |
| for (int i = 0; i < args.length; ++i) { |
| if (args[i].equals("-throwExceptions")) { |
| throwExceptions = true; |
| } |
| } |
| GC.runTest(new FinalizeTest01(), args); |
| } |
| } |