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聊聊 Java 自带的那些*逆天*工具
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<p>原谅我的标题党，其实这些工具的确很厉害，之前其实介绍过一点相关的，是从我一次问题排查的过程中用到的，但是最近又有碰到一次排查问题，发现其实用 idea 直接 <code>dump thread</code> 是不现实的，毕竟服务器环境的没法这么操作，那就得用 Java 的那些工具了</p>
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<h3 id="jstack-amp-jps"><a href="#jstack-amp-jps" class="headerlink" title="jstack & jps"></a>jstack & jps</h3><p>譬如 <code>jstack</code>，这个命令其实不能更简单了<br>看看 help 信息<br><img data-src="https://gitee.com/nicksxs/images/raw/master/uPic/1eYvcu.png" alt=""><br>用<code>-l</code>参数可以打出锁的额外信息，然后后面的 pid 就是进程 id 咯，机智的小伙伴会问了（就你这个小白才问这么蠢的问题🤦♂️），怎么看 Java 应用的进程呢<br>那就是 <code>jps</code> 了，命令也很简单，一般直接用 <code>jps</code>命令就好了，不过也可以 help 看一下<br><img data-src="https://gitee.com/nicksxs/images/raw/master/uPic/DqWZe1.png" alt=""><br>稍微解释下，-q是只显示进程 id，-m是输出给main 方法的参数，比如我在配置中加给参数<br><img data-src="https://gitee.com/nicksxs/images/raw/master/uPic/4A0pqD.png" alt=""><br>然后用 <code>jps -m</code>查看<br><img data-src="https://gitee.com/nicksxs/images/raw/master/uPic/LlGPfU.png" alt=""><br><code>-v</code>加上小 v 的话就是打印 jvm 参数<br><img data-src="https://gitee.com/nicksxs/images/raw/master/uPic/3UTgsd.png" alt=""><br>还是有点东西，然后就继续介绍 jstack 了，然后我们看看 jstack 出来是啥，为了加点内容我加了个死锁</p>
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<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br></pre></td><td class="code"><pre><span class="line"><span class="function"><span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">void</span> <span class="title">main</span><span class="params">(String[] args)</span> <span class="keyword">throws</span> InterruptedException </span>{</span><br><span class="line"> SpringApplication.run(ThreadDumpDemoApplication<span class="class">.<span class="keyword">class</span>, <span class="title">args</span>)</span>;</span><br><span class="line"> ReentrantLock lock1 = <span class="keyword">new</span> ReentrantLock();</span><br><span class="line"> ReentrantLock lock2 = <span class="keyword">new</span> ReentrantLock();</span><br><span class="line"> Thread t1 = <span class="keyword">new</span> Thread() {</span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">run</span><span class="params">()</span> </span>{</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> lock1.lock();</span><br><span class="line"> TimeUnit.SECONDS.sleep(<span class="number">1</span>);</span><br><span class="line"> lock2.lock();</span><br><span class="line"> } <span class="keyword">catch</span> (InterruptedException e) {</span><br><span class="line"> e.printStackTrace();</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> };</span><br><span class="line"> Thread t2 = <span class="keyword">new</span> Thread() {</span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="function"><span class="keyword">public</span> <span class="keyword">void</span> <span class="title">run</span><span class="params">()</span> </span>{</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> lock2.lock();</span><br><span class="line"> TimeUnit.SECONDS.sleep(<span class="number">1</span>);</span><br><span class="line"> lock1.lock();</span><br><span class="line"> } <span class="keyword">catch</span> (InterruptedException e) {</span><br><span class="line"> e.printStackTrace();</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> };</span><br><span class="line"> t1.setName(<span class="string">"mythread1"</span>);</span><br><span class="line"> t2.setName(<span class="string">"mythread2"</span>);</span><br><span class="line"> t1.start();</span><br><span class="line"> t2.start();</span><br><span class="line"> Thread.sleep(<span class="number">10000</span>);</span><br><span class="line"> }</span><br></pre></td></tr></table></figure>
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<p>然后看看出来时怎么样的</p>
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<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span 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class="line">302</span><br><span class="line">303</span><br><span class="line">304</span><br><span class="line">305</span><br><span class="line">306</span><br><span class="line">307</span><br><span class="line">308</span><br><span class="line">309</span><br><span class="line">310</span><br><span class="line">311</span><br><span class="line">312</span><br><span class="line">313</span><br><span class="line">314</span><br><span class="line">315</span><br><span class="line">316</span><br><span class="line">317</span><br><span class="line">318</span><br><span class="line">319</span><br><span class="line">320</span><br><span class="line">321</span><br><span class="line">322</span><br><span class="line">323</span><br><span class="line">324</span><br><span class="line">325</span><br><span class="line">326</span><br><span class="line">327</span><br><span class="line">328</span><br><span class="line">329</span><br><span class="line">330</span><br><span class="line">331</span><br><span class="line">332</span><br><span class="line">333</span><br><span class="line">334</span><br><span class="line">335</span><br><span class="line">336</span><br><span class="line">337</span><br><span class="line">338</span><br><span class="line">339</span><br><span class="line">340</span><br><span class="line">341</span><br><span class="line">342</span><br><span class="line">343</span><br><span class="line">344</span><br><span class="line">345</span><br><span class="line">346</span><br><span class="line">347</span><br><span class="line">348</span><br><span class="line">349</span><br><span class="line">350</span><br><span class="line">351</span><br><span class="line">352</span><br><span class="line">353</span><br><span class="line">354</span><br><span class="line">355</span><br><span class="line">356</span><br><span class="line">357</span><br><span class="line">358</span><br><span class="line">359</span><br><span class="line">360</span><br><span class="line">361</span><br><span class="line">362</span><br><span class="line">363</span><br><span class="line">364</span><br><span class="line">365</span><br><span class="line">366</span><br><span class="line">367</span><br><span class="line">368</span><br><span class="line">369</span><br><span class="line">370</span><br><span class="line">371</span><br><span class="line">372</span><br><span class="line">373</span><br><span class="line">374</span><br><span class="line">375</span><br><span class="line">376</span><br><span class="line">377</span><br><span class="line">378</span><br><span class="line">379</span><br><span class="line">380</span><br><span class="line">381</span><br><span class="line">382</span><br><span class="line">383</span><br><span class="line">384</span><br><span class="line">385</span><br><span class="line">386</span><br><span class="line">387</span><br><span class="line">388</span><br><span class="line">389</span><br><span class="line">390</span><br><span class="line">391</span><br><span class="line">392</span><br><span class="line">393</span><br><span class="line">394</span><br><span class="line">395</span><br><span class="line">396</span><br><span class="line">397</span><br><span class="line">398</span><br><span class="line">399</span><br><span class="line">400</span><br><span class="line">401</span><br><span class="line">402</span><br><span class="line">403</span><br><span class="line">404</span><br><span class="line">405</span><br><span class="line">406</span><br><span class="line">407</span><br><span class="line">408</span><br><span class="line">409</span><br><span class="line">410</span><br><span class="line">411</span><br><span class="line">412</span><br><span class="line">413</span><br><span class="line">414</span><br><span class="line">415</span><br><span class="line">416</span><br><span class="line">417</span><br><span class="line">418</span><br><span class="line">419</span><br><span class="line">420</span><br><span class="line">421</span><br><span class="line">422</span><br><span class="line">423</span><br><span class="line">424</span><br><span class="line">425</span><br><span class="line">426</span><br><span class="line">427</span><br><span class="line">428</span><br><span class="line">429</span><br><span class="line">430</span><br><span class="line">431</span><br><span class="line">432</span><br><span class="line">433</span><br><span class="line">434</span><br><span class="line">435</span><br><span class="line">436</span><br><span class="line">437</span><br><span class="line">438</span><br><span class="line">439</span><br><span class="line">440</span><br><span class="line">441</span><br><span class="line">442</span><br><span class="line">443</span><br><span class="line">444</span><br><span class="line">445</span><br><span class="line">446</span><br><span class="line">447</span><br><span class="line">448</span><br><span class="line">449</span><br><span class="line">450</span><br><span class="line">451</span><br><span class="line">452</span><br><span class="line">453</span><br><span class="line">454</span><br><span class="line">455</span><br><span class="line">456</span><br><span class="line">457</span><br><span class="line">458</span><br><span class="line">459</span><br><span class="line">460</span><br><span class="line">461</span><br><span class="line">462</span><br><span class="line">463</span><br><span class="line">464</span><br><span class="line">465</span><br></pre></td><td class="code"><pre><span class="line"><span class="number">2020</span>-<span class="number">08</span>-<span class="number">02</span> <span class="number">21</span>:<span class="number">50</span>:<span class="number">32</span></span><br><span class="line"><span class="function">Full thread dump Java <span class="title">HotSpot</span><span class="params">(TM)</span> 64-Bit Server <span class="title">VM</span> <span class="params">(<span class="number">25.201</span>-b09 mixed mode)</span>:</span></span><br><span class="line"><span class="function"></span></span><br><span class="line"><span class="function">"DestroyJavaVM" #147 prio</span>=<span class="number">5</span> os_prio=<span class="number">31</span> tid=<span class="number">0x00007fc9dd807000</span> nid=<span class="number">0x2603</span> waiting on condition [<span class="number">0x0000000000000000</span>]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"mythread2" #140 prio=5 os_prio=31 tid=0x00007fc9dd877000 nid=0x9903 waiting on condition [0x0000700006fb9000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f5d4330</span>> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:<span class="number">836</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:<span class="number">870</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:<span class="number">1199</span>)</span><br><span class="line"> at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:<span class="number">209</span>)</span><br><span class="line"> at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:<span class="number">285</span>)</span><br><span class="line"> at com.nicksxs.thread_dump_demo.ThreadDumpDemoApplication$<span class="number">2</span>.run(ThreadDumpDemoApplication.java:<span class="number">34</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - <<span class="number">0x000000076f5d4360</span>> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)</span><br><span class="line"></span><br><span class="line">"mythread1" #139 prio=5 os_prio=31 tid=0x00007fc9de873800 nid=0x9a03 waiting on condition [0x0000700006eb6000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f5d4360</span>> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:<span class="number">836</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:<span class="number">870</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:<span class="number">1199</span>)</span><br><span class="line"> at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:<span class="number">209</span>)</span><br><span class="line"> at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:<span class="number">285</span>)</span><br><span class="line"> at com.nicksxs.thread_dump_demo.ThreadDumpDemoApplication$<span class="number">1</span>.run(ThreadDumpDemoApplication.java:<span class="number">22</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - <<span class="number">0x000000076f5d4330</span>> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)</span><br><span class="line"></span><br><span class="line">"http-nio-8080-Acceptor" #137 daemon prio=5 os_prio=31 tid=0x00007fc9de1ac000 nid=0x9b03 runnable [0x0000700006db3000]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"> at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)</span><br><span class="line"> at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:<span class="number">422</span>)</span><br><span class="line"> at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:<span class="number">250</span>)</span><br><span class="line"> - locked <<span class="number">0x000000076f1e4820</span>> (a java.lang.Object)</span><br><span class="line"> at org.apache.tomcat.util.net.NioEndpoint.serverSocketAccept(NioEndpoint.java:<span class="number">469</span>)</span><br><span class="line"> at org.apache.tomcat.util.net.NioEndpoint.serverSocketAccept(NioEndpoint.java:<span class="number">71</span>)</span><br><span class="line"> at org.apache.tomcat.util.net.Acceptor.run(Acceptor.java:<span class="number">95</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-ClientPoller" #136 daemon prio=5 os_prio=31 tid=0x00007fc9dd876800 nid=0x6503 runnable [0x0000700006cb0000]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"> at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)</span><br><span class="line"> at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:<span class="number">198</span>)</span><br><span class="line"> at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:<span class="number">117</span>)</span><br><span class="line"> at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:<span class="number">86</span>)</span><br><span class="line"> - locked <<span class="number">0x000000076f2978c8</span>> (a sun.nio.ch.Util$<span class="number">3</span>)</span><br><span class="line"> - locked <<span class="number">0x000000076f2978b8</span>> (a java.util.Collections$UnmodifiableSet)</span><br><span class="line"> - locked <<span class="number">0x000000076f297798</span>> (a sun.nio.ch.KQueueSelectorImpl)</span><br><span class="line"> at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:<span class="number">97</span>)</span><br><span class="line"> at org.apache.tomcat.util.net.NioEndpoint$Poller.run(NioEndpoint.java:<span class="number">709</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-exec-10" #135 daemon prio=5 os_prio=31 tid=0x00007fc9de1af000 nid=0x9d03 waiting on condition [0x0000700006bad000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f26aa00</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:<span class="number">2039</span>)</span><br><span class="line"> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:<span class="number">442</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">107</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">33</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-exec-9" #134 daemon prio=5 os_prio=31 tid=0x00007fc9de1ab800 nid=0x6403 waiting on condition [0x0000700006aaa000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f26aa00</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:<span class="number">2039</span>)</span><br><span class="line"> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:<span class="number">442</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">107</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">33</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-exec-8" #133 daemon prio=5 os_prio=31 tid=0x00007fc9de873000 nid=0x9f03 waiting on condition [0x00007000069a7000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f26aa00</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:<span class="number">2039</span>)</span><br><span class="line"> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:<span class="number">442</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">107</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">33</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-exec-7" #132 daemon prio=5 os_prio=31 tid=0x00007fc9df0a1800 nid=0xa103 waiting on condition [0x00007000068a4000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f26aa00</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:<span class="number">2039</span>)</span><br><span class="line"> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:<span class="number">442</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">107</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">33</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-exec-6" #131 daemon prio=5 os_prio=31 tid=0x00007fc9df242800 nid=0x6103 waiting on condition [0x00007000067a1000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f26aa00</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:<span class="number">2039</span>)</span><br><span class="line"> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:<span class="number">442</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">107</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">33</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-exec-5" #130 daemon prio=5 os_prio=31 tid=0x00007fc9de872000 nid=0x5f03 waiting on condition [0x000070000669e000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f26aa00</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:<span class="number">2039</span>)</span><br><span class="line"> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:<span class="number">442</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">107</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">33</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-exec-4" #129 daemon prio=5 os_prio=31 tid=0x00007fc9de1a6000 nid=0x5e03 waiting on condition [0x000070000659b000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f26aa00</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:<span class="number">2039</span>)</span><br><span class="line"> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:<span class="number">442</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">107</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">33</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-exec-3" #128 daemon prio=5 os_prio=31 tid=0x00007fc9de871800 nid=0x5c03 waiting on condition [0x0000700006498000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f26aa00</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:<span class="number">2039</span>)</span><br><span class="line"> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:<span class="number">442</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">107</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">33</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-exec-2" #127 daemon prio=5 os_prio=31 tid=0x00007fc9dead9000 nid=0x5b03 waiting on condition [0x0000700006395000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f26aa00</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:<span class="number">2039</span>)</span><br><span class="line"> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:<span class="number">442</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">107</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">33</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-exec-1" #126 daemon prio=5 os_prio=31 tid=0x00007fc9ddb00000 nid=0x5a03 waiting on condition [0x0000700006292000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f26aa00</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:<span class="number">2039</span>)</span><br><span class="line"> at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:<span class="number">442</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">107</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskQueue.take(TaskQueue.java:<span class="number">33</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"http-nio-8080-BlockPoller" #125 daemon prio=5 os_prio=31 tid=0x00007fc9df242000 nid=0xa503 runnable [0x000070000618f000]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"> at sun.nio.ch.KQueueArrayWrapper.kevent0(Native Method)</span><br><span class="line"> at sun.nio.ch.KQueueArrayWrapper.poll(KQueueArrayWrapper.java:<span class="number">198</span>)</span><br><span class="line"> at sun.nio.ch.KQueueSelectorImpl.doSelect(KQueueSelectorImpl.java:<span class="number">117</span>)</span><br><span class="line"> at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:<span class="number">86</span>)</span><br><span class="line"> - locked <<span class="number">0x000000076f1eea30</span>> (a sun.nio.ch.Util$<span class="number">3</span>)</span><br><span class="line"> - locked <<span class="number">0x000000076f1ee198</span>> (a java.util.Collections$UnmodifiableSet)</span><br><span class="line"> - locked <<span class="number">0x000000076f1ee010</span>> (a sun.nio.ch.KQueueSelectorImpl)</span><br><span class="line"> at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:<span class="number">97</span>)</span><br><span class="line"> at org.apache.tomcat.util.net.NioBlockingSelector$BlockPoller.run(NioBlockingSelector.java:<span class="number">313</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"container-0" #124 prio=5 os_prio=31 tid=0x00007fc9df06a000 nid=0x5803 waiting on condition [0x000070000608c000]</span><br><span class="line"> java.lang.Thread.State: TIMED_WAITING (sleeping)</span><br><span class="line"> at java.lang.Thread.sleep(Native Method)</span><br><span class="line"> at org.apache.catalina.core.StandardServer.await(StandardServer.java:<span class="number">570</span>)</span><br><span class="line"> at org.springframework.boot.web.embedded.tomcat.TomcatWebServer$<span class="number">1</span>.run(TomcatWebServer.java:<span class="number">197</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"Catalina-utility-2" #123 prio=1 os_prio=31 tid=0x00007fc9de886000 nid=0xa80f waiting on condition [0x0000700005f89000]</span><br><span class="line"> java.lang.Thread.State: WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076c88ab58</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:<span class="number">2039</span>)</span><br><span class="line"> at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:<span class="number">1088</span>)</span><br><span class="line"> at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:<span class="number">809</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"Catalina-utility-1" #122 prio=1 os_prio=31 tid=0x00007fc9de884000 nid=0x5667 waiting on condition [0x0000700005e86000]</span><br><span class="line"> java.lang.Thread.State: TIMED_WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076c88ab58</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:<span class="number">215</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:<span class="number">2078</span>)</span><br><span class="line"> at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:<span class="number">1093</span>)</span><br><span class="line"> at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:<span class="number">809</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:<span class="number">61</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"RMI Scheduler(0)" #15 daemon prio=5 os_prio=31 tid=0x00007fc9de9ee000 nid=0x5503 waiting on condition [0x0000700005d83000]</span><br><span class="line"> java.lang.Thread.State: TIMED_WAITING (parking)</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x00000006c0015410</span>> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:<span class="number">215</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:<span class="number">2078</span>)</span><br><span class="line"> at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:<span class="number">1093</span>)</span><br><span class="line"> at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:<span class="number">809</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:<span class="number">1074</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:<span class="number">1134</span>)</span><br><span class="line"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:<span class="number">624</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"Attach Listener" #13 daemon prio=9 os_prio=31 tid=0x00007fc9df149800 nid=0x3c07 waiting on condition [0x0000000000000000]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"RMI TCP Accept-0" #11 daemon prio=5 os_prio=31 tid=0x00007fc9df100000 nid=0x4003 runnable [0x0000700005977000]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"> at java.net.PlainSocketImpl.socketAccept(Native Method)</span><br><span class="line"> at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:<span class="number">409</span>)</span><br><span class="line"> at java.net.ServerSocket.implAccept(ServerSocket.java:<span class="number">545</span>)</span><br><span class="line"> at java.net.ServerSocket.accept(ServerSocket.java:<span class="number">513</span>)</span><br><span class="line"> at sun.management.jmxremote.LocalRMIServerSocketFactory$<span class="number">1</span>.accept(LocalRMIServerSocketFactory.java:<span class="number">52</span>)</span><br><span class="line"> at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:<span class="number">405</span>)</span><br><span class="line"> at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:<span class="number">377</span>)</span><br><span class="line"> at java.lang.Thread.run(Thread.java:<span class="number">748</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"Service Thread" #9 daemon prio=9 os_prio=31 tid=0x00007fc9df0ce800 nid=0x4103 runnable [0x0000000000000000]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"C1 CompilerThread2" #8 daemon prio=9 os_prio=31 tid=0x00007fc9df0ce000 nid=0x4203 waiting on condition [0x0000000000000000]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"C2 CompilerThread1" #7 daemon prio=9 os_prio=31 tid=0x00007fc9de0a3800 nid=0x3503 waiting on condition [0x0000000000000000]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"C2 CompilerThread0" #6 daemon prio=9 os_prio=31 tid=0x00007fc9de89b000 nid=0x3403 waiting on condition [0x0000000000000000]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"Monitor Ctrl-Break" #5 daemon prio=5 os_prio=31 tid=0x00007fc9df0ca000 nid=0x3303 runnable [0x0000700005468000]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"> at java.net.SocketInputStream.socketRead0(Native Method)</span><br><span class="line"> at java.net.SocketInputStream.socketRead(SocketInputStream.java:<span class="number">116</span>)</span><br><span class="line"> at java.net.SocketInputStream.read(SocketInputStream.java:<span class="number">171</span>)</span><br><span class="line"> at java.net.SocketInputStream.read(SocketInputStream.java:<span class="number">141</span>)</span><br><span class="line"> at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:<span class="number">284</span>)</span><br><span class="line"> at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:<span class="number">326</span>)</span><br><span class="line"> at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:<span class="number">178</span>)</span><br><span class="line"> - locked <<span class="number">0x00000006c001b760</span>> (a java.io.InputStreamReader)</span><br><span class="line"> at java.io.InputStreamReader.read(InputStreamReader.java:<span class="number">184</span>)</span><br><span class="line"> at java.io.BufferedReader.fill(BufferedReader.java:<span class="number">161</span>)</span><br><span class="line"> at java.io.BufferedReader.readLine(BufferedReader.java:<span class="number">324</span>)</span><br><span class="line"> - locked <<span class="number">0x00000006c001b760</span>> (a java.io.InputStreamReader)</span><br><span class="line"> at java.io.BufferedReader.readLine(BufferedReader.java:<span class="number">389</span>)</span><br><span class="line"> at com.intellij.rt.execution.application.AppMainV2$<span class="number">1</span>.run(AppMainV2.java:<span class="number">64</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"Signal Dispatcher" #4 daemon prio=9 os_prio=31 tid=0x00007fc9de824000 nid=0x4503 runnable [0x0000000000000000]</span><br><span class="line"> java.lang.Thread.State: RUNNABLE</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"Finalizer" #3 daemon prio=8 os_prio=31 tid=0x00007fc9dd811800 nid=0x4f03 in Object.wait() [0x0000700005262000]</span><br><span class="line"> java.lang.Thread.State: WAITING (on object monitor)</span><br><span class="line"> at java.lang.Object.wait(Native Method)</span><br><span class="line"> - waiting on <<span class="number">0x00000006c0008348</span>> (a java.lang.ref.ReferenceQueue$Lock)</span><br><span class="line"> at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:<span class="number">144</span>)</span><br><span class="line"> - locked <<span class="number">0x00000006c0008348</span>> (a java.lang.ref.ReferenceQueue$Lock)</span><br><span class="line"> at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:<span class="number">165</span>)</span><br><span class="line"> at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:<span class="number">216</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line">"Reference Handler" #2 daemon prio=10 os_prio=31 tid=0x00007fc9de02a000 nid=0x5003 in Object.wait() [0x000070000515f000]</span><br><span class="line"> java.lang.Thread.State: WAITING (on object monitor)</span><br><span class="line"> at java.lang.Object.wait(Native Method)</span><br><span class="line"> - waiting on <<span class="number">0x00000006c001b940</span>> (a java.lang.ref.Reference$Lock)</span><br><span class="line"> at java.lang.Object.wait(Object.java:<span class="number">502</span>)</span><br><span class="line"> at java.lang.ref.Reference.tryHandlePending(Reference.java:<span class="number">191</span>)</span><br><span class="line"> - locked <<span class="number">0x00000006c001b940</span>> (a java.lang.ref.Reference$Lock)</span><br><span class="line"> at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:<span class="number">153</span>)</span><br><span class="line"></span><br><span class="line"> Locked ownable synchronizers:</span><br><span class="line"> - None</span><br><span class="line"></span><br><span class="line"><span class="string">"VM Thread"</span> os_prio=<span class="number">31</span> tid=<span class="number">0x00007fc9df00b800</span> nid=<span class="number">0x2c03</span> runnable </span><br><span class="line"></span><br><span class="line"><span class="string">"GC task thread#0 (ParallelGC)"</span> os_prio=<span class="number">31</span> tid=<span class="number">0x00007fc9de805000</span> nid=<span class="number">0x1e07</span> runnable </span><br><span class="line"></span><br><span class="line"><span class="string">"GC task thread#1 (ParallelGC)"</span> os_prio=<span class="number">31</span> tid=<span class="number">0x00007fc9de003800</span> nid=<span class="number">0x2a03</span> runnable </span><br><span class="line"></span><br><span class="line"><span class="string">"GC task thread#2 (ParallelGC)"</span> os_prio=<span class="number">31</span> tid=<span class="number">0x00007fc9df002000</span> nid=<span class="number">0x5403</span> runnable </span><br><span class="line"></span><br><span class="line"><span class="string">"GC task thread#3 (ParallelGC)"</span> os_prio=<span class="number">31</span> tid=<span class="number">0x00007fc9df002800</span> nid=<span class="number">0x5203</span> runnable </span><br><span class="line"></span><br><span class="line"><span class="string">"VM Periodic Task Thread"</span> os_prio=<span class="number">31</span> tid=<span class="number">0x00007fc9df11a800</span> nid=<span class="number">0x3a03</span> waiting on condition </span><br><span class="line"></span><br><span class="line">JNI global references: <span class="number">1087</span></span><br><span class="line"></span><br><span class="line"></span><br><span class="line">Found one Java-level deadlock:</span><br><span class="line">=============================</span><br><span class="line"><span class="string">"mythread2"</span>:</span><br><span class="line"> waiting <span class="keyword">for</span> ownable synchronizer <span class="number">0x000000076f5d4330</span>, (a java.util.concurrent.locks.ReentrantLock$NonfairSync),</span><br><span class="line"> which is held by <span class="string">"mythread1"</span></span><br><span class="line"><span class="string">"mythread1"</span>:</span><br><span class="line"> waiting <span class="keyword">for</span> ownable synchronizer <span class="number">0x000000076f5d4360</span>, (a java.util.concurrent.locks.ReentrantLock$NonfairSync),</span><br><span class="line"> which is held by <span class="string">"mythread2"</span></span><br><span class="line"></span><br><span class="line">Java stack information <span class="keyword">for</span> the threads listed above:</span><br><span class="line">===================================================</span><br><span class="line"><span class="string">"mythread2"</span>:</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f5d4330</span>> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:<span class="number">836</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:<span class="number">870</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:<span class="number">1199</span>)</span><br><span class="line"> at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:<span class="number">209</span>)</span><br><span class="line"> at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:<span class="number">285</span>)</span><br><span class="line"> at com.nicksxs.thread_dump_demo.ThreadDumpDemoApplication$<span class="number">2</span>.run(ThreadDumpDemoApplication.java:<span class="number">34</span>)</span><br><span class="line"><span class="string">"mythread1"</span>:</span><br><span class="line"> at sun.misc.Unsafe.park(Native Method)</span><br><span class="line"> - parking to wait <span class="keyword">for</span> <<span class="number">0x000000076f5d4360</span>> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)</span><br><span class="line"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:<span class="number">175</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:<span class="number">836</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:<span class="number">870</span>)</span><br><span class="line"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:<span class="number">1199</span>)</span><br><span class="line"> at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:<span class="number">209</span>)</span><br><span class="line"> at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:<span class="number">285</span>)</span><br><span class="line"> at com.nicksxs.thread_dump_demo.ThreadDumpDemoApplication$<span class="number">1</span>.run(ThreadDumpDemoApplication.java:<span class="number">22</span>)</span><br><span class="line"></span><br><span class="line">Found <span class="number">1</span> deadlock.</span><br></pre></td></tr></table></figure>
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<p>前面的信息其实上次就看过了，后面就可以发现有个死锁了，<br><img data-src="https://gitee.com/nicksxs/images/raw/master/uPic/a1I2vj.png" alt=""><br>上面比较长，把主要的截出来，就是这边的，这点就很强大了。</p>
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<h3 id="jmap"><a href="#jmap" class="headerlink" title="jmap"></a>jmap</h3><p>惯例还是看一下帮助信息<br><img data-src="https://gitee.com/nicksxs/images/raw/master/uPic/dBiPqS.png" alt=""><br>这个相对命令比较多，不过因为现在 dump 下来我们可能会用文件模式，然后将文件下载下来使用 mat 进行分析，所以可以使用<br><code>jmap -dump:live,format=b,file=heap.bin <pid></code><br>命令照着上面看的就是打印活着的对象，然后以二进制格式，文件名叫 heap.bin 然后最后就是进程 id，打印出来以后可以用 mat 打开<br><img data-src="https://gitee.com/nicksxs/images/raw/master/uPic/NRWowU.png" alt=""><br>这样就可以很清晰的看到应用里的各种信息，jmap 直接在命令中还可以看很多信息，比如使用<code>jmap -histo <pid></code>打印对象的实例数和对象占用的内存<br><img data-src="https://gitee.com/nicksxs/images/raw/master/uPic/1GTBrY.png" alt=""><br><code>jmap -finalizerinfo <pid></code> 打印正在等候回收的对象<br><img data-src="https://gitee.com/nicksxs/images/raw/master/uPic/Tb8uHP.png" alt=""></p>
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};
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|
NexT.utils.loadComments(document.querySelector('#disqus_thread'), () => {
|
|
if (window.DISQUS) {
|
|
DISQUS.reset({
|
|
reload: true,
|
|
config: disqus_config
|
|
});
|
|
} else {
|
|
var d = document, s = d.createElement('script');
|
|
s.src = 'https://nicksxs.disqus.com/embed.js';
|
|
s.setAttribute('data-timestamp', '' + +new Date());
|
|
(d.head || d.body).appendChild(s);
|
|
}
|
|
});
|
|
</script>
|
|
|
|
</body>
|
|
</html>
|