1 /* 2 * Copyright (c) 2017, 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 package org.graalvm.compiler.hotspot.jmx; 24 25 import java.util.ArrayList; 26 import java.util.Collections; 27 import java.util.List; 28 import java.util.Map; 29 import java.util.Set; 30 import jdk.vm.ci.runtime.JVMCI; 31 import jdk.vm.ci.runtime.JVMCICompiler; 32 import jdk.vm.ci.runtime.JVMCIRuntime; 33 import org.graalvm.compiler.hotspot.HotSpotGraalCompiler; 34 import sun.management.spi.PlatformMBeanProvider; 35 import sun.management.spi.PlatformMBeanProvider.PlatformComponent; 36 37 public final class GraalMBeans extends PlatformMBeanProvider { 38 @Override 39 public List<PlatformComponent<?>> getPlatformComponentList() { 40 List<PlatformComponent<?>> components = new ArrayList<>(); 41 try { 42 Object bean = findGraalRuntimeBean(); 43 if (bean != null) { 44 components.add(new HotSpotRuntimeMBeanComponent(bean)); 45 } 46 } catch (InternalError | LinkageError err) { 47 // go on and ignore 48 } 49 return components; 50 } 51 52 public static Object findGraalRuntimeBean() { 53 JVMCIRuntime r = JVMCI.getRuntime(); 54 JVMCICompiler c = r.getCompiler(); 55 if (c instanceof HotSpotGraalCompiler) { 56 return ((HotSpotGraalCompiler) c).mbean(); 57 } 58 return null; 59 } 60 61 private static final class HotSpotRuntimeMBeanComponent implements PlatformComponent<Object> { 62 63 private final String name; 64 private final Object mbean; 65 66 HotSpotRuntimeMBeanComponent(Object mbean) { 67 this.name = "org.graalvm.compiler.hotspot:type=Options"; 68 this.mbean = mbean; 69 } 70 71 @Override 72 public Set<Class<?>> mbeanInterfaces() { 73 return Collections.emptySet(); 74 } 75 76 @Override 77 public Set<String> mbeanInterfaceNames() { 78 return Collections.emptySet(); 79 } 80 81 @Override 82 public String getObjectNamePattern() { 83 return name; 84 } 85 86 @Override 87 public Map<String, Object> nameToMBeanMap() { 88 return Collections.<String, Object>singletonMap(name, mbean); 89 } 90 } 91 }