1 /* 2 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import jdk.test.lib.Asserts; 25 import java.lang.management.ManagementFactory; 26 import java.lang.management.MemoryManagerMXBean; 27 import java.util.HashMap; 28 import java.util.List; 29 import java.util.Map; 30 import java.util.Optional; 31 import sun.hotspot.code.BlobType; 32 33 /** 34 * @test MemoryPoolsPresenceTest 35 * @library /testlibrary /test/lib 36 * @modules java.management 37 * @build MemoryPoolsPresenceTest 38 * @run main ClassFileInstaller sun.hotspot.WhiteBox 39 * sun.hotspot.WhiteBox$WhiteBoxPermission 40 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 41 * -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache MemoryPoolsPresenceTest 42 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 43 * -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache MemoryPoolsPresenceTest 44 * @summary verify that MemoryManagerMXBean exists for every code cache segment 45 */ 46 public class MemoryPoolsPresenceTest { 47 48 private static final String CC_MANAGER = "CodeCacheManager"; 49 private final Map<String, Integer> counters = new HashMap<>(); 50 51 public static void main(String args[]) { 52 new MemoryPoolsPresenceTest().runTest(); 53 } 54 55 protected void runTest() { 56 List<MemoryManagerMXBean> beans 57 = ManagementFactory.getMemoryManagerMXBeans(); 58 Optional<MemoryManagerMXBean> any = beans 59 .stream() 60 .filter(bean -> CC_MANAGER.equals(bean.getName())) 61 .findAny(); 62 Asserts.assertTrue(any.isPresent(), "Bean not found: " + CC_MANAGER); 63 MemoryManagerMXBean ccManager = any.get(); 64 Asserts.assertNotNull(ccManager, "Found null for " + CC_MANAGER); 65 String names[] = ccManager.getMemoryPoolNames(); 66 for (String name : names) { 67 counters.put(name, counters.containsKey(name) 68 ? counters.get(name) + 1 : 1); 69 } 70 for (BlobType btype : BlobType.getAvailable()) { 71 Asserts.assertEQ(counters.get(btype.getMemoryPool().getName()), 1, 72 "Found unexpected amount of beans for pool " 73 + btype.getMemoryPool().getName()); 74 } 75 Asserts.assertEQ(BlobType.getAvailable().size(), 76 counters.keySet().size(), "Unexpected amount of bean names"); 77 } 78 }