</script><metaname="aes-config"content="pid=xux-opensource&user_type=101&uid=&username=&dim10=arthas"><scriptsrc="//g.alicdn.com/alilog/mlog/aplus_v2.js"id="beacon-aplus"exparams="clog=o&aplus&sidx=aplusSidx&ckx=aplusCkx"></script><scriptsrc="//g.alicdn.com/aes/??tracker/1.0.34/index.js,tracker-plugin-pv/2.4.5/index.js,tracker-plugin-event/1.2.5/index.js,tracker-plugin-jserror/1.0.13/index.js,tracker-plugin-api/1.1.14/index.js,tracker-plugin-perf/1.1.8/index.js,tracker-plugin-eventTiming/1.0.4/index.js"></script><title>dump | arthas</title><metaname="description"content="arthas user document">
</code></pre><divclass="line-numbers"aria-hidden="true"><divclass="line-number"></div><divclass="line-number"></div><divclass="line-number"></div><divclass="line-number"></div></div></div><ul><li>Specify classLoader</li></ul><p>Note that the hashcode changes, you need to check the current ClassLoader information first, and extract the hashcode corresponding to the ClassLoader.</p><p>if you use<code>-c</code>, you have to manually type hashcode by <code>-c <hashcode></code>.</p><divclass="language-bash ext-sh line-numbers-mode"><preclass="language-bash"><code>$ dump <spanclass="token parameter variable">-c</span> 3d4eac69 demo.*
</code></pre><divclass="line-numbers"aria-hidden="true"><divclass="line-number"></div></div></div><p>For classloader with only one instance, it can be specified by <code>--classLoaderClass</code> using class name, which is more convenient to use.</p><divclass="language-bash ext-sh line-numbers-mode"><preclass="language-bash"><code>$ dump <spanclass="token parameter variable">--classLoaderClass</span> sun.misc.Launcher<spanclass="token variable">$AppClassLoader</span> demo.*
</code></pre><divclass="line-numbers"aria-hidden="true"><divclass="line-number"></div><divclass="line-number"></div><divclass="line-number"></div><divclass="line-number"></div><divclass="line-number"></div></div></div><ul><li>PS: Here the classLoaderClass in java 8 is sun.misc.Launcher$AppClassLoader, while in java 11 it's jdk.internal.loader.ClassLoaders$AppClassLoader. Currently killercoda using java 11.</li></ul><p>The value of <code>--classloaderclass</code> is the class name of classloader. It can only work when it matches a unique classloader instance. The purpose is to facilitate the input of general commands. However, <code>-c <hashcode></code> is dynamic.</p></div><!--[--><!--]--></div><footerclass="page-meta right-menu-padding"data-v-fdd717e0><divclass="meta-item edit-link"><aclass="external-link meta-item-label"href="https://github.com/alibaba/arthas/edit/master/site/docs/en/doc/dump.md"rel="noopener noreferrer"target="_blank"aria-label="Edit this page on GitHub"><!--[--><!--]--><span>Edit this page on GitHub</span><span><svgclass="external-link-icon"xmlns="http://www.w3.org/2000/svg"aria-hidden="true"focusable="false"x="0px"y="0px"viewbox="0 0 100 100"width="15"height="15"><pathfill="currentColor"d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygonfill="currentColor"points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><spanclass="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></div><divclass="meta-item last-updated"><spanclass="meta-item-label">Last Updated: </span><!----></div><divclass="meta-item contributors"><spanclass="meta-item-label">Contributors: </span><spanclass="meta-item-info"><!--[--><!--[--><spanclass="contributor"title="email: i@fatpandac.com">Fatpandac</span><!--[-->, <!--]--><!--]--><!--[--><spanclass="contributor"title="email: hengyunabc@gmail.com">hengyunabc</span><!--[-->, <!--]--><!--]--><!--[--><spanclass="contributor"title="email: LHearen@126.com">Hearen</span><!--[-->, <!--]--><!--]--><!--[--><spanclass="contributor"title="email: hollowman186@vip.qq.com">Hollow Man</span><!--[-->, <!--]--><!--]--><!--[--><spanclass="contributor"title="email: hollowman@hollowman.ml">Hollow Man</span><!--[-->, <!--]--><!--]--><!--[--><spanclass="contributor"title="email: ian.luo@gmail.com">beiwei30</span><!----><!--]--><!--]--></span></div></footer><navclass="page-nav right-menu-padding"data-v-fdd717e0><pclass="inner"><spanclass="prev"><ahref="/en/doc/dashboard.html"class=""aria-label="dashboard"><!--[--><!--]--> dashboard <!--[--><!--]--></a></span><spanclass="next"><ahref="/en/doc/echo.html"class=""aria-label="echo"><!--[--><!--]--> echo <!--[--><!--]--></a></span></p></nav><!--[--><!--]--></main><!--]--></div><!----><!--]--></div>
