| = Thread Dump |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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. |
| |
| The Thread Dump screen lets you inspect the currently active threads on your server. |
| |
| Each thread is listed and access to the stacktraces is available where applicable. Icons to the left indicate the state of the thread: for example, threads with a green check-mark in a green circle are in a "RUNNABLE" state. On the right of the thread name, a down-arrow means you can expand to see the stacktrace for that thread. |
| |
| .List of Threads |
| image::images/thread-dump/thread_dump_1.png[image,width=484,height=250] |
| |
| |
| When you move your cursor over a thread name, a box floats over the name with the state for that thread. Thread states can be: |
| |
| // TODO: Change column width to %autowidth.spread when https://github.com/asciidoctor/asciidoctor-pdf/issues/599 is fixed |
| |
| [cols="25,75",options="header"] |
| |=== |
| |State |Meaning |
| |NEW |A thread that has not yet started. |
| |RUNNABLE |A thread executing in the Java virtual machine. |
| |BLOCKED |A thread that is blocked waiting for a monitor lock. |
| |WAITING |A thread that is waiting indefinitely for another thread to perform a particular action. |
| |TIMED_WAITING |A thread that is waiting for another thread to perform an action for up to a specified waiting time. |
| |TERMINATED |A thread that has exited. |
| |=== |
| |
| When you click on one of the threads that can be expanded, you'll see the stacktrace, as in the example below: |
| |
| .Inspecting a Thread |
| image::images/thread-dump/thread_dump_2.png[image,width=453,height=250] |
| |
| You can also check the *Show all Stacktraces* button to automatically enable expansion for all threads. |
