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[WFCORE-5968] log thread dump upon management timeout
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129 changes: 129 additions & 0 deletions
129
controller/src/main/java/org/jboss/as/controller/ThreadDumpUtil.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| /* | ||
| * JBoss, Home of Professional Open Source. | ||
| * | ||
| * Copyright 2022 Red Hat, Inc., and individual contributors | ||
| * as indicated by the @author tags. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
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| package org.jboss.as.controller; | ||
|
|
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| import org.jboss.as.controller.logging.ControllerLogger; | ||
|
|
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| import java.io.PrintWriter; | ||
| import java.io.StringWriter; | ||
| import java.lang.management.LockInfo; | ||
| import java.lang.management.ManagementFactory; | ||
| import java.lang.management.MonitorInfo; | ||
| import java.lang.management.ThreadInfo; | ||
| import java.lang.management.ThreadMXBean; | ||
|
|
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| final class ThreadDumpUtil { | ||
|
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| public static void threadDump() { | ||
|
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| try ( | ||
| StringWriter dumpstr = new StringWriter(); | ||
| PrintWriter dumpout = new PrintWriter(dumpstr); | ||
| StringWriter deadlockstr = new StringWriter(); | ||
| PrintWriter deadlockout = new PrintWriter(deadlockstr); | ||
| ) { | ||
|
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| ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean(); | ||
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| for (ThreadInfo threadInfo : threadMXBean.dumpAllThreads(true, true)) { | ||
| dumpout.println(threadInfoToString(threadInfo)); | ||
| } | ||
|
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| ControllerLogger.MGMT_OP_LOGGER.threadDump(dumpstr.toString()); | ||
|
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| long[] deadlockedThreads = threadMXBean.findDeadlockedThreads(); | ||
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| if (deadlockedThreads != null && deadlockedThreads.length > 0) { | ||
| for (ThreadInfo threadInfo : threadMXBean.getThreadInfo(deadlockedThreads, true, true)) { | ||
| deadlockout.println(threadInfoToString(threadInfo)); | ||
| } | ||
|
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| ControllerLogger.MGMT_OP_LOGGER.deadLock(deadlockstr.toString()); | ||
| } | ||
|
|
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| } catch (Exception e) { | ||
| ControllerLogger.ROOT_LOGGER.threadDumpException(e); | ||
| } | ||
| } | ||
|
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| private static String threadInfoToString(ThreadInfo threadInfo) { | ||
| StringBuilder sb = new StringBuilder("\"" + threadInfo.getThreadName() + "\"" + | ||
| " Id=" + threadInfo.getThreadId() + " " + | ||
| threadInfo.getThreadState()); | ||
| if (threadInfo.getLockName() != null) { | ||
| sb.append(" on " + threadInfo.getLockName()); | ||
| } | ||
| if (threadInfo.getLockOwnerName() != null) { | ||
| sb.append(" owned by \"" + threadInfo.getLockOwnerName() + | ||
| "\" Id=" + threadInfo.getLockOwnerId()); | ||
| } | ||
| if (threadInfo.isSuspended()) { | ||
| sb.append(" (suspended)"); | ||
| } | ||
| if (threadInfo.isInNative()) { | ||
| sb.append(" (in native)"); | ||
| } | ||
| sb.append('\n'); | ||
| int i = 0; | ||
| for (; i < threadInfo.getStackTrace().length; i++) { | ||
| StackTraceElement ste = threadInfo.getStackTrace()[i]; | ||
| sb.append("\tat " + ste.toString()); | ||
| sb.append('\n'); | ||
| if (i == 0 && threadInfo.getLockInfo() != null) { | ||
| Thread.State ts = threadInfo.getThreadState(); | ||
| switch (ts) { | ||
| case BLOCKED: | ||
| sb.append("\t- blocked on " + threadInfo.getLockInfo()); | ||
| sb.append('\n'); | ||
| break; | ||
| case WAITING: | ||
| sb.append("\t- waiting on " + threadInfo.getLockInfo()); | ||
| sb.append('\n'); | ||
| break; | ||
| case TIMED_WAITING: | ||
| sb.append("\t- waiting on " + threadInfo.getLockInfo()); | ||
| sb.append('\n'); | ||
| break; | ||
| default: | ||
| } | ||
| } | ||
|
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| for (MonitorInfo mi : threadInfo.getLockedMonitors()) { | ||
| if (mi.getLockedStackDepth() == i) { | ||
| sb.append("\t- locked " + mi); | ||
| sb.append('\n'); | ||
| } | ||
| } | ||
| } | ||
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| LockInfo[] locks = threadInfo.getLockedSynchronizers(); | ||
| if (locks.length > 0) { | ||
| sb.append("\n\tNumber of locked synchronizers = " + locks.length); | ||
| sb.append('\n'); | ||
| for (LockInfo li : locks) { | ||
| sb.append("\t- " + li); | ||
| sb.append('\n'); | ||
| } | ||
| } | ||
| sb.append('\n'); | ||
| return sb.toString(); | ||
| } | ||
|
|
||
| } |
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