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scouter.util.ThreadUtil Maven / Gradle / Ivy
/*
* Copyright 2015 the original author or authors.
* @https://github.com/scouter-project/scouter
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package scouter.util;
import scouter.lang.pack.MapPack;
import scouter.lang.value.DecimalValue;
import scouter.lang.value.ListValue;
import scouter.lang.value.TextValue;
import java.lang.management.ManagementFactory;
import java.lang.management.ThreadInfo;
import java.lang.management.ThreadMXBean;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
public class ThreadUtil {
public static void sleep(long tm) {
try {
Thread.sleep(tm);
} catch (InterruptedException e) {
}
}
public static void qWait() {
sleep(1);
}
public static void wait(Object o) {
try {
o.wait();
} catch (InterruptedException e) {
}
}
public static void wait(Object o, long time) {
try {
o.wait(time);
} catch (InterruptedException e) {
}
}
public static String getName(Thread t) {
return getName(t.getClass());
}
public static String getName(Class clazz) {
String name = clazz.getName();
if (name.startsWith("scouter.agent.") == false)
return name;
return "Scouter-" + name.substring(name.lastIndexOf('.') + 1);
}
public static MapPack getThreadDetail(long thread_id) {
MapPack m = new MapPack();
return appendThreadDetail(thread_id, m);
}
public static MapPack appendThreadDetail(long thread_id, MapPack m) {
if (thread_id == 0)
return m;
ThreadMXBean tmb = ManagementFactory.getThreadMXBean();
ThreadInfo f = tmb.getThreadInfo(thread_id, 500);
if (f == null)
return m;
m.put("Thread Id", new DecimalValue(f.getThreadId()));
m.put("Thread Cpu Time", new DecimalValue(tmb.getThreadCpuTime(thread_id) / 1000000));
m.put("Thread User Time", new DecimalValue(tmb.getThreadUserTime(thread_id) / 1000000));
m.put("Blocked Count", new DecimalValue(f.getBlockedCount()));
m.put("Blocked Time", new DecimalValue(f.getBlockedTime()));
m.put("Waited Count", new DecimalValue(f.getWaitedCount()));
m.put("Waited Time", new DecimalValue(f.getWaitedTime()));
m.put("Lock Owner Id", new DecimalValue(f.getLockOwnerId()));
m.put("Lock Name", new TextValue(f.getLockName()));
m.put("Lock Owner Name", new TextValue(f.getLockOwnerName()));
m.put("Thread Name", new TextValue(f.getThreadName()));
m.put("Stack Trace", new TextValue(getStackTrace(f.getStackTrace()).toString()));
m.put("State", new TextValue(f.getThreadState().toString()));
return m;
}
public static String getThreadStack(long id) {
ThreadMXBean tmb = ManagementFactory.getThreadMXBean();
ThreadInfo f = tmb.getThreadInfo(id, 500);
if (f == null)
return null;
return getStackTrace(f.getStackTrace());
}
public static String getThreadStack() {
return getStackTrace(Thread.currentThread().getStackTrace());
}
public static String getStackTrace(StackTraceElement[] se) {
return getStackTrace(se, 0);
}
public static String getStackTrace(StackTraceElement[] se, int skip) {
if (se == null || se.length <= skip)
return "";
String CRLF = System.getProperty("line.separator");
StringBuffer sb = new StringBuffer();
for (int i = skip; i < se.length; i++) {
if (sb.length() > 0) {
sb.append(CRLF);
}
sb.append(se[i]);
}
return sb.toString();
}
private static String getDumpStack(StackTraceElement[] se) {
String CRLF = System.getProperty("line.separator");
StringBuffer sb = new StringBuffer();
for (int i = 0; i < se.length; i++) {
if (sb.length() > 0) {
sb.append(CRLF);
}
sb.append("\t" + se[i]);
}
return sb.toString();
}
private static void getDumpStack(List buff, StackTraceElement[] se) {
for (int i = 0; i < se.length; i++) {
buff.add("\t" + se[i]);
}
}
public static MapPack getThreadList() {
ThreadMXBean tmb = ManagementFactory.getThreadMXBean();
long[] thread = tmb.getAllThreadIds();
MapPack pack = new MapPack();
ListValue id = pack.newList("id");
ListValue name = pack.newList("name");
ListValue stat = pack.newList("stat");
ListValue cpu = pack.newList("cpu");
for (int i = 0; i < thread.length; i++) {
ThreadInfo fo = tmb.getThreadInfo(thread[i]);
if (fo == null) {
continue;
}
id.add(fo.getThreadId());
name.add(fo.getThreadName());
stat.add(fo.getThreadState().toString());
cpu.add(tmb.getThreadCpuTime(thread[i]) / 1000000);
}
return pack;
}
public static ThreadPoolExecutor createExecutor(final String name, int count, int keepAlive, final boolean isDaemon) {
ThreadPoolExecutor exe = new ThreadPoolExecutor(count, count, keepAlive, TimeUnit.MILLISECONDS, new LinkedBlockingQueue(), new ThreadFactory() {
private int threadNum = 1;
public Thread newThread(Runnable r) {
Thread t = new Thread(r, name + (threadNum++));
t.setDaemon(isDaemon);
return t;
}
});
// if (keepAlive > 0) {
// // FIXME JDK 1.7 ?
// if (SystemUtils.IS_JAVA_1_5 == false) {
// try {
// exe.allowCoreThreadTimeOut(true);
// } catch(Throwable t) { }
// }
// }
return exe;
}
public static String getStackTrace(Throwable t) {
String CRLF = System.getProperty("line.separator");
StringBuffer sb = new StringBuffer();
sb.append(t.toString() + CRLF);
StackTraceElement[] se = t.getStackTrace();
if (se != null) {
for (int i = 0; i < se.length; i++) {
if (se[i] != null) {
sb.append("\t" + se[i].toString());
if (i != se.length - 1) {
sb.append(CRLF);
}
}
}
}
return sb.toString();
}
public static void getStackTrace(StringBuffer sb, Throwable t, int max) {
if (t == null)
return;
if (max <= 0) {
max = 10000;
}
String CRLF = System.getProperty("line.separator");
sb.append(t);
StackTraceElement[] se = t.getStackTrace();
if (se != null && se.length > 0) {
for (int i = 0; i < se.length && i < max; i++) {
sb.append(CRLF);
sb.append("\t" + se[i]);
}
if (max < se.length) {
sb.append(CRLF + "\t...more lines " + (se.length - max));
}
} else {
sb.append(CRLF + "\tno stack info ");
}
}
public static void main(String[] args) {
System.out.println( Long.toHexString(100));
}
public static String getThreadDump() {
StringBuffer dump = new StringBuffer(2048);
dump.append(DateUtil.format(System.currentTimeMillis(), "yyyy-MM-dd HH:mm:ss")).append("\n");
dump.append("Scouter thread dump " + System.getProperty("java.vm.name")).append("\n");
ThreadMXBean tmb = ManagementFactory.getThreadMXBean();
long[] thread = tmb.getAllThreadIds();
for (int i = 0; i < thread.length; i++) {
dump.append("\n");
ThreadInfo f = tmb.getThreadInfo(thread[i], 500);
StackTraceElement[] se = f.getStackTrace();
if (se.length > 0) {
dump.append(getThreadHead(f)).append("\n");
dump.append(" java.lang.Thread.State: ").append(f.getThreadState()).append("\n");
dump.append(getDumpStack(se)).append("\n");
} else {
dump.append(getThreadHead(f)).append(" ").append(f.getThreadState().toString().toLowerCase()).append("\n");
}
}
return dump.toString();
}
private static String getThreadHead(ThreadInfo f) {
StringBuffer sb = new StringBuffer();
sb.append('"').append(f.getThreadName()).append('"');
sb.append(" tid=0x" + Long.toHexString(f.getThreadId()));
sb.append(" native=" + f.isInNative());
sb.append(" suspended=" + f.isSuspended());
return sb.toString();
}
public static List getThreadDumpList() {
ArrayList dump = new ArrayList();
dump.add(DateUtil.format(System.currentTimeMillis(), "yyyy-MM-dd HH:mm:ss"));
dump.add("Scouter thread dump " + System.getProperty("java.vm.name"));
ThreadMXBean tmb = ManagementFactory.getThreadMXBean();
long[] thread = tmb.getAllThreadIds();
for (int i = 0; i < thread.length; i++) {
dump.add("");
ThreadInfo f = tmb.getThreadInfo(thread[i], 500);
StackTraceElement[] se = f.getStackTrace();
if (se.length > 0) {
dump.add(getThreadHead(f));
dump.add(" java.lang.Thread.State: " + f.getThreadState());
getDumpStack(dump, se);
} else {
dump.add(getThreadHead(f) + " " + f.getThreadState().toString().toLowerCase());
}
}
return dump;
}
}
