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TEIID-2813 adding cpu time to source command log entries
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89 changes: 89 additions & 0 deletions
89
engine/src/main/java/org/teiid/dqp/internal/datamgr/ThreadCpuTimer.java
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| @@ -0,0 +1,89 @@ | ||
| /* | ||
| * JBoss, Home of Professional Open Source. | ||
| * See the COPYRIGHT.txt file distributed with this work for information | ||
| * regarding copyright ownership. Some portions may be licensed | ||
| * to Red Hat, Inc. under one or more contributor license agreements. | ||
| * | ||
| * This library is free software; you can redistribute it and/or | ||
| * modify it under the terms of the GNU Lesser General Public | ||
| * License as published by the Free Software Foundation; either | ||
| * version 2.1 of the License, or (at your option) any later version. | ||
| * | ||
| * This library 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 | ||
| * Lesser General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public | ||
| * License along with this library; if not, write to the Free Software | ||
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | ||
| * 02110-1301 USA. | ||
| */ | ||
|
|
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| package org.teiid.dqp.internal.datamgr; | ||
|
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| import java.lang.management.ManagementFactory; | ||
| import java.lang.management.ThreadMXBean; | ||
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| import org.teiid.logging.LogConstants; | ||
| import org.teiid.logging.LogManager; | ||
| import org.teiid.logging.MessageLevel; | ||
|
|
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| /** | ||
| * Timer class that uses the ThreadMXBean for CPU timing | ||
| */ | ||
| public class ThreadCpuTimer { | ||
|
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| private static ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean(); | ||
| private int totalTime = -1; | ||
| private long lastTime = -1; | ||
| private boolean active; | ||
|
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| public ThreadCpuTimer() { | ||
| active = threadMXBean.isThreadCpuTimeSupported() | ||
| && threadMXBean.isThreadCpuTimeEnabled() | ||
| && LogManager.isMessageToBeRecorded(LogConstants.CTX_COMMANDLOGGING, MessageLevel.DETAIL); | ||
| } | ||
|
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| public void start() { | ||
| if (!active) { | ||
| return; | ||
| } | ||
| try { | ||
| lastTime = threadMXBean.getCurrentThreadCpuTime(); | ||
| } catch (UnsupportedOperationException e) { | ||
| inactivate(); | ||
| } | ||
|
|
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| } | ||
|
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| private void inactivate() { | ||
| active = false; | ||
| lastTime = -1; | ||
| totalTime = -1; | ||
| } | ||
|
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| public long stop() { | ||
| if (!active) { | ||
| return -1; | ||
| } | ||
| if (lastTime != -1) { | ||
| try { | ||
| long time = threadMXBean.getCurrentThreadCpuTime(); | ||
| if (time != -1) { | ||
| if (totalTime == -1) { | ||
| totalTime = 0; | ||
| } | ||
| totalTime += (time - lastTime); | ||
| } else { | ||
| inactivate(); | ||
| } | ||
| } catch (UnsupportedOperationException e) { | ||
| inactivate(); | ||
| } | ||
| } | ||
| lastTime = -1; | ||
| return totalTime; | ||
| } | ||
|
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| } |