224 lines
7.9 KiB
Java
224 lines
7.9 KiB
Java
/*
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* Copyright (c) 2003, 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
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* @bug 4530538
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* @summary Basic unit test of MemoryMXBean.getMemoryPools() and
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* MemoryMXBean.getMemoryManager().
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* @requires vm.gc != "Z" & vm.gc != "Shenandoah" & !vm.gc.G1
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* @author Mandy Chung
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*
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* @modules jdk.management
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* @run main MemoryTest 2 3
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*/
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/*
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* @test id=Z
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* @bug 4530538
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* @summary Basic unit test of MemoryMXBean.getMemoryPools() and
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* MemoryMXBean.getMemoryManager().
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* @requires vm.gc.Z
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* @author Mandy Chung
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*
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* @modules jdk.management
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* @run main/othervm -XX:+UseZGC MemoryTest 4 2
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*/
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/*
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* @test
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* @bug 4530538
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* @summary Basic unit test of MemoryMXBean.getMemoryPools() and
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* MemoryMXBean.getMemoryManager().
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* @requires vm.gc == "Shenandoah"
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* @author Mandy Chung
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*
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* @modules jdk.management
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* @run main MemoryTest 2 1
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*/
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/*
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* @test
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* @bug 4530538
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* @summary Basic unit test of MemoryMXBean.getMemoryPools() and
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* MemoryMXBean.getMemoryManager().
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* @requires vm.gc.G1
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* @author Mandy Chung
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*
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* @modules jdk.management
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* @run main/othervm -XX:+UseG1GC MemoryTest 3 3
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*/
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/*
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* NOTE: This expected result is hardcoded in this test and this test
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* will be affected if the heap memory layout is changed in
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* the future implementation.
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*/
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import java.lang.management.*;
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import java.util.*;
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public class MemoryTest {
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private static boolean testFailed = false;
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private static MemoryMXBean mm = ManagementFactory.getMemoryMXBean();
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private static final int HEAP = 0;
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private static final int NONHEAP = 1;
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private static final int NUM_TYPES = 2;
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// WARNING: if the number of pools changes in the future,
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// this test needs to be modified to handle different version of VMs.
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// Hotspot VM 1.5 expected to have
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// heap memory pools = 3 (Eden, Survivor spaces, Old gen)
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// non-heap memory pools = 2 (Perm gen, Code cache)
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// or 4 if Class Sharing is enabled.
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// Number of memory managers = 3
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// They are: Copy/Scavenger + MSC + CodeCache manager
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// (or equivalent for other collectors)
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// Number of GC memory managers = 2
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// Hotspot VM 1.8+ after perm gen removal is expected to have between two
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// or five non-heap memory pools:
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// - Code cache (between one and three depending on the -XX:SegmentedCodeCache option)
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// - Metaspace
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// - Compressed Class Space (if compressed class pointers are used)
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private static int[] expectedMinNumPools = new int[2];
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private static int[] expectedMaxNumPools = new int[2];
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private static int expectedNumGCMgrs;
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private static int expectedNumMgrs;
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private static String[] types = { "heap", "non-heap" };
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public static void main(String args[]) throws Exception {
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expectedNumGCMgrs = Integer.valueOf(args[0]);
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expectedNumMgrs = expectedNumGCMgrs + 2;
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int expectedNumPools = Integer.valueOf(args[1]);
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expectedMinNumPools[HEAP] = expectedNumPools;
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expectedMaxNumPools[HEAP] = expectedNumPools;
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expectedMinNumPools[NONHEAP] = 2;
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expectedMaxNumPools[NONHEAP] = 5;
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checkMemoryPools();
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checkMemoryManagers();
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if (testFailed)
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throw new RuntimeException("TEST FAILED.");
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System.out.println("Test passed.");
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}
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private static void checkMemoryPools() throws Exception {
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List pools = ManagementFactory.getMemoryPoolMXBeans();
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boolean hasPerm = false;
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int[] numPools = new int[NUM_TYPES];
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for (ListIterator iter = pools.listIterator(); iter.hasNext();) {
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MemoryPoolMXBean pool = (MemoryPoolMXBean) iter.next();
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if (pool.getType() == MemoryType.HEAP) {
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numPools[HEAP]++;
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}
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if (pool.getType() == MemoryType.NON_HEAP) {
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numPools[NONHEAP]++;
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}
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if (pool.getName().toLowerCase().contains("perm")) {
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hasPerm = true;
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}
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}
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if (hasPerm) {
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// If the VM has perm gen there will be between 2 and 4 non heap
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// pools (4 if class data sharing is used)
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expectedMinNumPools[NONHEAP] = 2;
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expectedMaxNumPools[NONHEAP] = 4;
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}
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// Check the number of Memory pools
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for (int i = 0; i < NUM_TYPES; i++) {
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if (numPools[i] < expectedMinNumPools[i] ||
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numPools[i] > expectedMaxNumPools[i]) {
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throw new RuntimeException("TEST FAILED: " +
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"Number of " + types[i] + " pools = " + numPools[i] +
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" but expected <= " + expectedMaxNumPools[i] +
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" and >= " + expectedMinNumPools[i]);
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}
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}
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}
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private static void checkMemoryManagers() throws Exception {
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List mgrs = ManagementFactory.getMemoryManagerMXBeans();
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int numGCMgr = 0;
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// Check the number of Memory Managers
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for (ListIterator iter = mgrs.listIterator(); iter.hasNext();) {
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MemoryManagerMXBean mgr = (MemoryManagerMXBean) iter.next();
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String[] poolNames = mgr.getMemoryPoolNames();
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if (poolNames == null || poolNames.length == 0) {
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throw new RuntimeException("TEST FAILED: " +
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"Expected to have one or more pools for " +
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mgr.getName() + "manager.");
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}
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if (mgr instanceof GarbageCollectorMXBean) {
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numGCMgr++;
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} else {
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for (int i = 0; i < poolNames.length; i++) {
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checkPoolType(poolNames[i], MemoryType.NON_HEAP);
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}
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}
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}
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if (mgrs.size() != expectedNumMgrs) {
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throw new RuntimeException("TEST FAILED: " +
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"Number of memory managers = " + mgrs.size() +
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" but expected = " + expectedNumMgrs);
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}
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if (numGCMgr != expectedNumGCMgrs) {
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throw new RuntimeException("TEST FAILED: " +
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"Number of GC managers = " + numGCMgr + " but expected = " +
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expectedNumGCMgrs);
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}
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}
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private static List pools = ManagementFactory.getMemoryPoolMXBeans();
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private static void checkPoolType(String name, MemoryType type)
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throws Exception {
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for (ListIterator iter = pools.listIterator(); iter.hasNext(); ) {
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MemoryPoolMXBean pool = (MemoryPoolMXBean) iter.next();
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if (pool.getName().equals(name)) {
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if (pool.getType() != type) {
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throw new RuntimeException("TEST FAILED: " +
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"Pool " + pool.getName() + " is of type " +
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pool.getType() + " but expected to be " + type);
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} else {
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return;
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}
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}
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}
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throw new RuntimeException("TEST FAILED: " +
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"Pool " + name + " is of type " + type +
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" not found");
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}
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}
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