121 lines
3.9 KiB
Java
121 lines
3.9 KiB
Java
/*
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* Copyright (c) 2017, 2020, Red Hat, Inc. 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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/**
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* @test id=aggressive
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* @summary Tests JVMTI heap dumps
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* @requires vm.gc.Shenandoah
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* @requires vm.jvmti
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* @compile TestHeapDump.java
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* @run main/othervm/native/timeout=300 -agentlib:TestHeapDump
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* -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
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* -XX:+UseShenandoahGC -Xmx128m
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* -XX:ShenandoahGCHeuristics=aggressive
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* TestHeapDump
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*
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*/
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/**
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* @test id=no-coops-aggressive
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* @summary Tests JVMTI heap dumps
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* @requires vm.gc.Shenandoah
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* @requires vm.jvmti
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* @requires vm.bits == "64"
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* @compile TestHeapDump.java
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* @run main/othervm/native/timeout=300 -agentlib:TestHeapDump
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* -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
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* -XX:+UseShenandoahGC -Xmx128m
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* -XX:ShenandoahGCHeuristics=aggressive
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* -XX:-UseCompressedOops TestHeapDump
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*/
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/**
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* @test id=aggressive-strdedup
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* @summary Tests JVMTI heap dumps
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* @requires vm.gc.Shenandoah
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* @requires vm.jvmti
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* @compile TestHeapDump.java
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* @run main/othervm/native/timeout=300 -agentlib:TestHeapDump
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* -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
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* -XX:+UseShenandoahGC -Xmx128m
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* -XX:ShenandoahGCHeuristics=aggressive
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* -XX:+UseStringDeduplication TestHeapDump
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*/
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import java.lang.ref.Reference;
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public class TestHeapDump {
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private static final int NUM_ITER = 10000;
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private static final int ARRAY_SIZE = 1000;
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private static final int EXPECTED_OBJECTS =
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ARRAY_SIZE + // array reachable from instance field
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1 + // static field root
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1; // local field root
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static {
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try {
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System.loadLibrary("TestHeapDump");
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} catch (UnsatisfiedLinkError ule) {
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System.err.println("Could not load TestHeapDump library");
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System.err.println("java.library.path: "
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+ System.getProperty("java.library.path"));
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throw ule;
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}
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}
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native static int heapdump(Class<?> filterClass);
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public static void main(String args[]) {
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new TestHeapDump().run();
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}
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// This root needs to be discovered
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static Object root = new TestObject();
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// This field needs to be discovered
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TestObject[] array;
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public void run() {
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array = new TestObject[ARRAY_SIZE];
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for (int i = 0; i < ARRAY_SIZE; i++) {
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array[i] = new TestObject();
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}
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TestObject localRoot = new TestObject();
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for (int i = 0; i < NUM_ITER; i++) {
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int numObjs = heapdump(TestObject.class);
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if (numObjs != EXPECTED_OBJECTS) {
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throw new RuntimeException("Expected " + EXPECTED_OBJECTS + " objects, but got " + numObjs);
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}
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}
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Reference.reachabilityFence(array);
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Reference.reachabilityFence(localRoot);
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}
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// We look for the instances of this class during the heap scan
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public static class TestObject {}
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}
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