| /* |
| * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package org.graalvm.compiler.debug; |
| |
| import static java.lang.Thread.currentThread; |
| |
| import java.lang.management.ManagementFactory; |
| import java.lang.management.ThreadInfo; |
| import java.lang.management.ThreadMXBean; |
| |
| import javax.management.ObjectName; |
| |
| public class Management { |
| |
| private static final com.sun.management.ThreadMXBean threadMXBean = Management.initThreadMXBean(); |
| |
| /** |
| * The amount of memory allocated by |
| * {@link com.sun.management.ThreadMXBean#getThreadAllocatedBytes(long)} itself. |
| */ |
| private static final long threadMXBeanOverhead = -getCurrentThreadAllocatedBytes() + getCurrentThreadAllocatedBytes(); |
| |
| public static long getCurrentThreadAllocatedBytes() { |
| return threadMXBean.getThreadAllocatedBytes(currentThread().getId()) - threadMXBeanOverhead; |
| } |
| |
| private static com.sun.management.ThreadMXBean initThreadMXBean() { |
| try { |
| return (com.sun.management.ThreadMXBean) ManagementFactory.getThreadMXBean(); |
| } catch (Error err) { |
| return new UnimplementedBean(); |
| } |
| } |
| |
| public static ThreadMXBean getThreadMXBean() { |
| return threadMXBean; |
| } |
| |
| private static class UnimplementedBean implements ThreadMXBean, com.sun.management.ThreadMXBean { |
| |
| @Override |
| public ObjectName getObjectName() { |
| return null; |
| } |
| |
| @Override |
| public long getThreadAllocatedBytes(long arg0) { |
| return 0; |
| } |
| |
| @Override |
| public long[] getThreadAllocatedBytes(long[] arg0) { |
| return null; |
| } |
| |
| @Override |
| public long[] getThreadCpuTime(long[] arg0) { |
| return null; |
| } |
| |
| @Override |
| public long[] getThreadUserTime(long[] arg0) { |
| return null; |
| } |
| |
| @Override |
| public boolean isThreadAllocatedMemoryEnabled() { |
| return false; |
| } |
| |
| @Override |
| public boolean isThreadAllocatedMemorySupported() { |
| return false; |
| } |
| |
| @Override |
| public void setThreadAllocatedMemoryEnabled(boolean arg0) { |
| } |
| |
| @Override |
| public int getThreadCount() { |
| return 0; |
| } |
| |
| @Override |
| public int getPeakThreadCount() { |
| return 0; |
| } |
| |
| @Override |
| public long getTotalStartedThreadCount() { |
| return 0; |
| } |
| |
| @Override |
| public int getDaemonThreadCount() { |
| return 0; |
| } |
| |
| @Override |
| public long[] getAllThreadIds() { |
| return null; |
| } |
| |
| @Override |
| public ThreadInfo getThreadInfo(long id) { |
| return null; |
| } |
| |
| @Override |
| public ThreadInfo[] getThreadInfo(long[] ids) { |
| return null; |
| } |
| |
| @Override |
| public ThreadInfo getThreadInfo(long id, int maxDepth) { |
| return null; |
| } |
| |
| @Override |
| public ThreadInfo[] getThreadInfo(long[] ids, int maxDepth) { |
| return null; |
| } |
| |
| @Override |
| public boolean isThreadContentionMonitoringSupported() { |
| return false; |
| } |
| |
| @Override |
| public boolean isThreadContentionMonitoringEnabled() { |
| return false; |
| } |
| |
| @Override |
| public void setThreadContentionMonitoringEnabled(boolean enable) { |
| } |
| |
| @Override |
| public long getCurrentThreadCpuTime() { |
| return 0; |
| } |
| |
| @Override |
| public long getCurrentThreadUserTime() { |
| return 0; |
| } |
| |
| @Override |
| public long getThreadCpuTime(long id) { |
| return 0; |
| } |
| |
| @Override |
| public long getThreadUserTime(long id) { |
| return 0; |
| } |
| |
| @Override |
| public boolean isThreadCpuTimeSupported() { |
| return false; |
| } |
| |
| @Override |
| public boolean isCurrentThreadCpuTimeSupported() { |
| return false; |
| } |
| |
| @Override |
| public boolean isThreadCpuTimeEnabled() { |
| return false; |
| } |
| |
| @Override |
| public void setThreadCpuTimeEnabled(boolean enable) { |
| } |
| |
| @Override |
| public long[] findMonitorDeadlockedThreads() { |
| return null; |
| } |
| |
| @Override |
| public void resetPeakThreadCount() { |
| } |
| |
| @Override |
| public long[] findDeadlockedThreads() { |
| return null; |
| } |
| |
| @Override |
| public boolean isObjectMonitorUsageSupported() { |
| return false; |
| } |
| |
| @Override |
| public boolean isSynchronizerUsageSupported() { |
| return false; |
| } |
| |
| @Override |
| public ThreadInfo[] getThreadInfo(long[] ids, boolean lockedMonitors, boolean lockedSynchronizers) { |
| return null; |
| } |
| |
| @Override |
| public ThreadInfo[] dumpAllThreads(boolean lockedMonitors, boolean lockedSynchronizers) { |
| return null; |
| } |
| } |
| } |