107 lines
4.6 KiB
Java
107 lines
4.6 KiB
Java
/*
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* Copyright (c) 2018, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test TestHeapDumpOnOutOfMemoryError
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* @summary Test verifies that -XX:HeapDumpOnOutOfMemoryError dumps heap when OutOfMemory is thrown in heap
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* @library /test/lib
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* @requires vm.flagless
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* @run driver TestHeapDumpOnOutOfMemoryError run heap
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*/
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/*
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* @test TestHeapDumpOnOutOfMemoryError
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* @summary Test verifies that -XX:HeapDumpOnOutOfMemoryError dumps heap when OutOfMemory is thrown in metaspace.
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* @library /test/lib
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* @requires vm.flagless
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* @run driver/timeout=240 TestHeapDumpOnOutOfMemoryError run metaspace
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*/
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import jdk.test.lib.Asserts;
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import jdk.test.lib.Platform;
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import jdk.test.lib.classloader.GeneratingClassLoader;
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import jdk.test.lib.hprof.HprofParser;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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import java.io.File;
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public class TestHeapDumpOnOutOfMemoryError {
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public static final String HEAP_OOME = "heap";
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public static final String METASPACE_OOME = "metaspace";
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public static void main(String[] args) throws Exception {
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if (args.length == 1) {
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try {
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if (args[0].equals(HEAP_OOME)) {
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Object[] oa = new Object[Integer.MAX_VALUE];
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for(int i = 0; i < oa.length; i++) {
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oa[i] = new Object[Integer.MAX_VALUE];
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}
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} else {
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GeneratingClassLoader loader = new GeneratingClassLoader();
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for (int i = 0; ; i++) {
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loader.loadClass(loader.getClassName(i));
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}
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}
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throw new Error("OOME not triggered");
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} catch (OutOfMemoryError err) {
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return;
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}
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}
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test(args[1]);
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}
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static void test(String type) throws Exception {
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String heapdumpFilename = type + ".hprof";
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder("-XX:+HeapDumpOnOutOfMemoryError",
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"-XX:HeapDumpPath=" + heapdumpFilename,
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// Note: When trying to provoke a metaspace OOM we may generate a lot of classes. In debug VMs this
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// can cause considerable wait times since:
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// - Compiler Dependencies verification iterates the class tree
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// - Before exit, the CLDG is checked.
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// Both verifications show quadratic time or worse wrt to number of loaded classes. Therefore it
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// makes sense to switch one or both off and limit the metaspace size to something sensible.
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// Example numbers on a slow ppc64 machine:
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// MaxMetaspaceSize=64M - ~60-70K classes - ~20min runtime with all verifications
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// MaxMetaspaceSize=16M - ~12-15K classes - ~12sec runtime with all verifications
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// MaxMetaspaceSize=16M - ~12-15K classes - VerifyDependencies off - ~3seconds on ppc
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"-XX:MaxMetaspaceSize=16m",
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"-Xmx128m",
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Platform.isDebugBuild() ? "-XX:-VerifyDependencies" : "-Dx",
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TestHeapDumpOnOutOfMemoryError.class.getName(), type);
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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output.stdoutShouldNotBeEmpty();
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output.shouldContain("Dumping heap to " + type + ".hprof");
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File dump = new File(heapdumpFilename);
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Asserts.assertTrue(dump.exists() && dump.isFile(),
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"Could not find dump file " + dump.getAbsolutePath());
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HprofParser.parse(new File(heapdumpFilename));
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System.out.println("PASSED");
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}
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}
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