mirror of https://github.com/alibaba/arthas.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
65 KiB
HTML
57 lines
65 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="en-US">
|
|
<head>
|
|
<meta charset="utf-8">
|
|
<meta name="viewport" content="width=device-width,initial-scale=1">
|
|
<meta name="generator" content="VuePress 2.0.0-beta.49">
|
|
<style>
|
|
:root {
|
|
--c-bg: #fff;
|
|
}
|
|
html.dark {
|
|
--c-bg: #22272e;
|
|
}
|
|
html, body {
|
|
background-color: var(--c-bg);
|
|
}
|
|
</style>
|
|
<script>
|
|
const userMode = localStorage.getItem('vuepress-color-scheme');
|
|
const systemDarkMode = window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches;
|
|
if (userMode === 'dark' || (userMode !== 'light' && systemDarkMode)) {
|
|
document.documentElement.classList.toggle('dark', true);
|
|
}
|
|
</script>
|
|
<link rel="icon" href="/images/favicon.ico"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta property="og:title" content="Arthas"><meta property="og:image:alt" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><meta property="og:image" content="/images/arthas_mate_image.png"><meta property="og:description" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><meta property="og:image:width" content="1200"><meta property="og:image:height" content="600"><meta property="twitter:image:src" content="/images/arthas_mate_image.png"><meta property="twitter:image:alt" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><meta itemprop="name" content="Arthas"><meta itemprop="image" content="/images/arthas_mate_image.png"><meta itemprop="description" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><script>
|
|
var _hmt = _hmt || [];
|
|
(function() {
|
|
var hm = document.createElement("script");
|
|
hm.src = "https://hm.baidu.com/hm.js?d5c5e25b100f0eb51a4c35c8a86ea9b4";
|
|
var s = document.getElementsByTagName("script")[0];
|
|
s.parentNode.insertBefore(hm, s);
|
|
})();
|
|
</script><meta name="aes-config" content="pid=xux-opensource&user_type=101&uid=&username="><script src="//g.alicdn.com/alilog/mlog/aplus_v2.js" id="beacon-aplus" exparams="clog=o&aplus&sidx=aplusSidx&ckx=aplusCkx"></script><script src="//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>Fundamental Fields in Expressions | arthas</title><meta name="description" content="arthas user document">
|
|
<link rel="modulepreload" href="/assets/app.cdce46bf.js"><link rel="modulepreload" href="/assets/advice-class.html.198473e2.js"><link rel="modulepreload" href="/assets/advice-class.html.c85748d6.js"><link rel="prefetch" href="/assets/index.html.ec74869a.js"><link rel="prefetch" href="/assets/index.html.d3cced9f.js"><link rel="prefetch" href="/assets/index.html.99601dee.js"><link rel="prefetch" href="/assets/advanced-use.html.d690d46c.js"><link rel="prefetch" href="/assets/advice-class.html.4e93ebd7.js"><link rel="prefetch" href="/assets/agent.html.a02fd5cb.js"><link rel="prefetch" href="/assets/arthas-properties.html.e0301951.js"><link rel="prefetch" href="/assets/arthas3.html.d1633eb8.js"><link rel="prefetch" href="/assets/async.html.17ea43ab.js"><link rel="prefetch" href="/assets/auth.html.86a52c48.js"><link rel="prefetch" href="/assets/base64.html.2edc61dd.js"><link rel="prefetch" href="/assets/batch-support.html.83e73d71.js"><link rel="prefetch" href="/assets/cat.html.f09e3f3d.js"><link rel="prefetch" href="/assets/classloader.html.8b2deb9e.js"><link rel="prefetch" href="/assets/cls.html.af39fd39.js"><link rel="prefetch" href="/assets/commands.html.9dc0463a.js"><link rel="prefetch" href="/assets/contact-us.html.16fb01ac.js"><link rel="prefetch" href="/assets/dashboard.html.a9c23e86.js"><link rel="prefetch" href="/assets/docker.html.797da397.js"><link rel="prefetch" href="/assets/download.html.a75cd477.js"><link rel="prefetch" href="/assets/dump.html.6579f6db.js"><link rel="prefetch" href="/assets/echo.html.79f44daf.js"><link rel="prefetch" href="/assets/faq.html.abd854f1.js"><link rel="prefetch" href="/assets/getstatic.html.38b9ce31.js"><link rel="prefetch" href="/assets/grep.html.f67b96a2.js"><link rel="prefetch" href="/assets/groovy.html.bcb88dfe.js"><link rel="prefetch" href="/assets/heapdump.html.47f4a9f6.js"><link rel="prefetch" href="/assets/help.html.ee0f4863.js"><link rel="prefetch" href="/assets/history.html.d66d9e9d.js"><link rel="prefetch" href="/assets/http-api.html.53120123.js"><link rel="prefetch" href="/assets/idea-plugin.html.e2603f6f.js"><link rel="prefetch" href="/assets/install-detail.html.cfd3d763.js"><link rel="prefetch" href="/assets/jad.html.d3b26fc7.js"><link rel="prefetch" href="/assets/jvm.html.8e719ad4.js"><link rel="prefetch" href="/assets/keymap.html.87fd1593.js"><link rel="prefetch" href="/assets/logger.html.cf471c6c.js"><link rel="prefetch" href="/assets/manual-install.html.1daf5a51.js"><link rel="prefetch" href="/assets/mbean.html.5f200d32.js"><link rel="prefetch" href="/assets/mc.html.9375ea5e.js"><link rel="prefetch" href="/assets/memory.html.c3ade2e6.js"><link rel="prefetch" href="/assets/monitor.html.11513f32.js"><link rel="prefetch" href="/assets/ognl.html.84b34988.js"><link rel="prefetch" href="/assets/options.html.1f134957.js"><link rel="prefetch" href="/assets/perfcounter.html.3f818559.js"><link rel="prefetch" href="/assets/profiler.html.55cdd6a9.js"><link rel="prefetch" href="/assets/pwd.html.abacd813.js"><link rel="prefetch" href="/assets/quick-start.html.d9abe6d7.js"><link rel="prefetch" href="/assets/quit.html.3f89724d.js"><link rel="prefetch" href="/assets/redefine.html.d3754390.js"><link rel="prefetch" href="/assets/release-notes.html.dc8ff1f0.js"><link rel="prefetch" href="/assets/reset.html.a0f5f519.js"><link rel="prefetch" href="/assets/retransform.html.b0ba0863.js"><link rel="prefetch" href="/assets/save-log.html.6f759775.js"><link rel="prefetch" href="/assets/sc.html.6a0420ad.js"><link rel="prefetch" href="/assets/session.html.537ea477.js"><link rel="prefetch" href="/assets/sm.html.d57d9750.js"><link rel="prefetch" href="/assets/spring-boot-starter.html.02e93d34.js"><link rel="prefetch" href="/assets/stack.html.7ed4a520.js"><link rel="prefetch" href="/assets/start-arthas.html.5421937d.js"><link rel="prefetch" href="/assets/stop.html.aa8ba3f6.js"><link rel="prefetch" href="/assets/sysenv.html.169780ba.js"><link rel="prefetch" href="/assets/sysprop.html.0ea72780.js"><link rel="prefetch" href="/assets/tee.html.afeb55ba.js"><link rel="prefetch" href="/assets/thread.html.449bfcc3.js"><link rel="prefetch" href="/assets/trace.html.e9134871.js"><link rel="prefetch" href="/assets/tt.html.034674fb.js"><link rel="prefetch" href="/assets/tunnel.html.159817d5.js"><link rel="prefetch" href="/assets/version.html.611d9c4d.js"><link rel="prefetch" href="/assets/vmoption.html.822aee8b.js"><link rel="prefetch" href="/assets/vmtool.html.1c8e876b.js"><link rel="prefetch" href="/assets/watch.html.c9334857.js"><link rel="prefetch" href="/assets/web-console.html.412a2df9.js"><link rel="prefetch" href="/assets/index.html.beb1d552.js"><link rel="prefetch" href="/assets/advanced-use.html.cc1fae23.js"><link rel="prefetch" href="/assets/agent.html.6d5822c4.js"><link rel="prefetch" href="/assets/arthas-properties.html.0a5926f9.js"><link rel="prefetch" href="/assets/async.html.1026bdce.js"><link rel="prefetch" href="/assets/auth.html.41652f9f.js"><link rel="prefetch" href="/assets/base64.html.d6b5d140.js"><link rel="prefetch" href="/assets/batch-support.html.531ec63d.js"><link rel="prefetch" href="/assets/cat.html.6cfd08b7.js"><link rel="prefetch" href="/assets/classloader.html.7965a72b.js"><link rel="prefetch" href="/assets/cls.html.5c798b59.js"><link rel="prefetch" href="/assets/commands.html.06079b95.js"><link rel="prefetch" href="/assets/contact-us.html.157b2624.js"><link rel="prefetch" href="/assets/dashboard.html.4b1e592f.js"><link rel="prefetch" href="/assets/docker.html.d36bba26.js"><link rel="prefetch" href="/assets/download.html.73fc2f14.js"><link rel="prefetch" href="/assets/dump.html.91b813b1.js"><link rel="prefetch" href="/assets/echo.html.1c339010.js"><link rel="prefetch" href="/assets/faq.html.27684b86.js"><link rel="prefetch" href="/assets/getstatic.html.3136f1c9.js"><link rel="prefetch" href="/assets/grep.html.cb3e187c.js"><link rel="prefetch" href="/assets/groovy.html.a98236a6.js"><link rel="prefetch" href="/assets/heapdump.html.737deb32.js"><link rel="prefetch" href="/assets/help.html.ec7d92af.js"><link rel="prefetch" href="/assets/history.html.e9696cdd.js"><link rel="prefetch" href="/assets/http-api.html.05249956.js"><link rel="prefetch" href="/assets/idea-plugin.html.be6cfb55.js"><link rel="prefetch" href="/assets/install-detail.html.2a3c7491.js"><link rel="prefetch" href="/assets/jad.html.02d3f18d.js"><link rel="prefetch" href="/assets/jvm.html.4e139d4a.js"><link rel="prefetch" href="/assets/keymap.html.8f0ea4a7.js"><link rel="prefetch" href="/assets/logger.html.fffef16f.js"><link rel="prefetch" href="/assets/manual-install.html.94267611.js"><link rel="prefetch" href="/assets/mbean.html.f0f3934f.js"><link rel="prefetch" href="/assets/mc.html.b16a223d.js"><link rel="prefetch" href="/assets/memory.html.0ab053c8.js"><link rel="prefetch" href="/assets/monitor.html.ce1b96d6.js"><link rel="prefetch" href="/assets/ognl.html.b4aa4f42.js"><link rel="prefetch" href="/assets/options.html.5b322b8c.js"><link rel="prefetch" href="/assets/perfcounter.html.2b25a79d.js"><link rel="prefetch" href="/assets/profiler.html.e294e77d.js"><link rel="prefetch" href="/assets/pwd.html.4d365a64.js"><link rel="prefetch" href="/assets/quick-start.html.f017229d.js"><link rel="prefetch" href="/assets/quit.html.5f2533ff.js"><link rel="prefetch" href="/assets/redefine.html.924bf323.js"><link rel="prefetch" href="/assets/release-notes.html.b32334af.js"><link rel="prefetch" href="/assets/reset.html.c5433af0.js"><link rel="prefetch" href="/assets/retransform.html.090f4714.js"><link rel="prefetch" href="/assets/save-log.html.957eb564.js"><link rel="prefetch" href="/assets/sc.html.1c7f100d.js"><link rel="prefetch" href="/assets/session.html.1806b907.js"><link rel="prefetch" href="/assets/sm.html.c4976ce6.js"><link rel="prefetch" href="/assets/spring-boot-starter.html.6b51ce51.js"><link rel="prefetch" href="/assets/stack.html.7c836f09.js"><link rel="prefetch" href="/assets/start-arthas.html.da02bebb.js"><link rel="prefetch" href="/assets/stop.html.fa54851d.js"><link rel="prefetch" href="/assets/sysenv.html.f75c73b1.js"><link rel="prefetch" href="/assets/sysprop.html.5ccef151.js"><link rel="prefetch" href="/assets/tee.html.f3972ced.js"><link rel="prefetch" href="/assets/thread.html.907a97dd.js"><link rel="prefetch" href="/assets/trace.html.98f06c89.js"><link rel="prefetch" href="/assets/tt.html.f51e4330.js"><link rel="prefetch" href="/assets/tunnel.html.339adda9.js"><link rel="prefetch" href="/assets/version.html.ead47f70.js"><link rel="prefetch" href="/assets/vmoption.html.080fd0dc.js"><link rel="prefetch" href="/assets/vmtool.html.9c348547.js"><link rel="prefetch" href="/assets/watch.html.857d4dd8.js"><link rel="prefetch" href="/assets/web-console.html.a5d32a96.js"><link rel="prefetch" href="/assets/404.html.6ec8a9cd.js"><link rel="prefetch" href="/assets/index.html.9ebefbd8.js"><link rel="prefetch" href="/assets/index.html.c39f0260.js"><link rel="prefetch" href="/assets/index.html.da872277.js"><link rel="prefetch" href="/assets/advanced-use.html.ae7666ee.js"><link rel="prefetch" href="/assets/advice-class.html.be92da9e.js"><link rel="prefetch" href="/assets/agent.html.b4c19fe9.js"><link rel="prefetch" href="/assets/arthas-properties.html.1f7007c5.js"><link rel="prefetch" href="/assets/arthas3.html.5429fc3a.js"><link rel="prefetch" href="/assets/async.html.befad91b.js"><link rel="prefetch" href="/assets/auth.html.833ba665.js"><link rel="prefetch" href="/assets/base64.html.08572c4a.js"><link rel="prefetch" href="/assets/batch-support.html.894d869b.js"><link rel="prefetch" href="/assets/cat.html.eaf7aa24.js"><link rel="prefetch" href="/assets/classloader.html.e1a44a9b.js"><link rel="prefetch" href="/assets/cls.html.cf71596d.js"><link rel="prefetch" href="/assets/commands.html.62359cb9.js"><link rel="prefetch" href="/assets/contact-us.html.dbecd9e4.js"><link rel="prefetch" href="/assets/dashboard.html.b5c4eb73.js"><link rel="prefetch" href="/assets/docker.html.032a54f7.js"><link rel="prefetch" href="/assets/download.html.4efbe977.js"><link rel="prefetch" href="/assets/dump.html.db209a51.js"><link rel="prefetch" href="/assets/echo.html.a3651168.js"><link rel="prefetch" href="/assets/faq.html.f8d1721f.js"><link rel="prefetch" href="/assets/getstatic.html.f148713e.js"><link rel="prefetch" href="/assets/grep.html.cdb4de70.js"><link rel="prefetch" href="/assets/groovy.html.cfd98a51.js"><link rel="prefetch" href="/assets/heapdump.html.6ad7a87c.js"><link rel="prefetch" href="/assets/help.html.a4a38ea7.js"><link rel="prefetch" href="/assets/history.html.dcf27086.js"><link rel="prefetch" href="/assets/http-api.html.aaee5c9b.js"><link rel="prefetch" href="/assets/idea-plugin.html.719da9b8.js"><link rel="prefetch" href="/assets/install-detail.html.0377c428.js"><link rel="prefetch" href="/assets/jad.html.12ff2fd1.js"><link rel="prefetch" href="/assets/jvm.html.dec74902.js"><link rel="prefetch" href="/assets/keymap.html.e08cef0e.js"><link rel="prefetch" href="/assets/logger.html.09bc9881.js"><link rel="prefetch" href="/assets/manual-install.html.366f0436.js"><link rel="prefetch" href="/assets/mbean.html.734ea5d7.js"><link rel="prefetch" href="/assets/mc.html.789df5e4.js"><link rel="prefetch" href="/assets/memory.html.63fe7fd9.js"><link rel="prefetch" href="/assets/monitor.html.800c6765.js"><link rel="prefetch" href="/assets/ognl.html.e442c53b.js"><link rel="prefetch" href="/assets/options.html.f8414402.js"><link rel="prefetch" href="/assets/perfcounter.html.22bdae1f.js"><link rel="prefetch" href="/assets/profiler.html.081a1514.js"><link rel="prefetch" href="/assets/pwd.html.414a86a2.js"><link rel="prefetch" href="/assets/quick-start.html.cb25b4fd.js"><link rel="prefetch" href="/assets/quit.html.7a470778.js"><link rel="prefetch" href="/assets/redefine.html.7cdbebbb.js"><link rel="prefetch" href="/assets/release-notes.html.432a975a.js"><link rel="prefetch" href="/assets/reset.html.06f7850b.js"><link rel="prefetch" href="/assets/retransform.html.85c3b97a.js"><link rel="prefetch" href="/assets/save-log.html.3555e8ae.js"><link rel="prefetch" href="/assets/sc.html.f8607236.js"><link rel="prefetch" href="/assets/session.html.5c20c327.js"><link rel="prefetch" href="/assets/sm.html.5e6914d0.js"><link rel="prefetch" href="/assets/spring-boot-starter.html.41625dbf.js"><link rel="prefetch" href="/assets/stack.html.0658a450.js"><link rel="prefetch" href="/assets/start-arthas.html.0e7d3f5c.js"><link rel="prefetch" href="/assets/stop.html.cde876be.js"><link rel="prefetch" href="/assets/sysenv.html.e1ca3dc9.js"><link rel="prefetch" href="/assets/sysprop.html.01ec573e.js"><link rel="prefetch" href="/assets/tee.html.73d4c61a.js"><link rel="prefetch" href="/assets/thread.html.64445cca.js"><link rel="prefetch" href="/assets/trace.html.9d0aba75.js"><link rel="prefetch" href="/assets/tt.html.3ab71357.js"><link rel="prefetch" href="/assets/tunnel.html.48846c9c.js"><link rel="prefetch" href="/assets/version.html.39f9dce9.js"><link rel="prefetch" href="/assets/vmoption.html.41fdea4b.js"><link rel="prefetch" href="/assets/vmtool.html.1e0f8e78.js"><link rel="prefetch" href="/assets/watch.html.501e275f.js"><link rel="prefetch" href="/assets/web-console.html.882c52dc.js"><link rel="prefetch" href="/assets/index.html.0f37d0ef.js"><link rel="prefetch" href="/assets/advanced-use.html.94c319f7.js"><link rel="prefetch" href="/assets/agent.html.bc60b5ae.js"><link rel="prefetch" href="/assets/arthas-properties.html.2f366535.js"><link rel="prefetch" href="/assets/async.html.2d85bc77.js"><link rel="prefetch" href="/assets/auth.html.23b9b8b8.js"><link rel="prefetch" href="/assets/base64.html.6d044e6c.js"><link rel="prefetch" href="/assets/batch-support.html.88a19fb2.js"><link rel="prefetch" href="/assets/cat.html.3fb1bcbd.js"><link rel="prefetch" href="/assets/classloader.html.493b72d2.js"><link rel="prefetch" href="/assets/cls.html.4b113ac4.js"><link rel="prefetch" href="/assets/commands.html.19e0f58b.js"><link rel="prefetch" href="/assets/contact-us.html.3dae29c9.js"><link rel="prefetch" href="/assets/dashboard.html.5ca6e28f.js"><link rel="prefetch" href="/assets/docker.html.d920f7d8.js"><link rel="prefetch" href="/assets/download.html.2e5583ae.js"><link rel="prefetch" href="/assets/dump.html.04997e2f.js"><link rel="prefetch" href="/assets/echo.html.8d8c3eec.js"><link rel="prefetch" href="/assets/faq.html.a0765f67.js"><link rel="prefetch" href="/assets/getstatic.html.eadbb15c.js"><link rel="prefetch" href="/assets/grep.html.af3bd729.js"><link rel="prefetch" href="/assets/groovy.html.cc827b4d.js"><link rel="prefetch" href="/assets/heapdump.html.65bb1d34.js"><link rel="prefetch" href="/assets/help.html.ece04722.js"><link rel="prefetch" href="/assets/history.html.2b620553.js"><link rel="prefetch" href="/assets/http-api.html.ac9c987a.js"><link rel="prefetch" href="/assets/idea-plugin.html.518d052f.js"><link rel="prefetch" href="/assets/install-detail.html.d0be935d.js"><link rel="prefetch" href="/assets/jad.html.4ec57de1.js"><link rel="prefetch" href="/assets/jvm.html.c01c1d5a.js"><link rel="prefetch" href="/assets/keymap.html.94b1be08.js"><link rel="prefetch" href="/assets/logger.html.bd6c1d29.js"><link rel="prefetch" href="/assets/manual-install.html.8794f9b2.js"><link rel="prefetch" href="/assets/mbean.html.bbd905f2.js"><link rel="prefetch" href="/assets/mc.html.263da5a0.js"><link rel="prefetch" href="/assets/memory.html.16756f57.js"><link rel="prefetch" href="/assets/monitor.html.d75107ca.js"><link rel="prefetch" href="/assets/ognl.html.4cec53e3.js"><link rel="prefetch" href="/assets/options.html.4c746476.js"><link rel="prefetch" href="/assets/perfcounter.html.b25cc554.js"><link rel="prefetch" href="/assets/profiler.html.8935bfd6.js"><link rel="prefetch" href="/assets/pwd.html.b7bc28a8.js"><link rel="prefetch" href="/assets/quick-start.html.c40c5a96.js"><link rel="prefetch" href="/assets/quit.html.153d9d2d.js"><link rel="prefetch" href="/assets/redefine.html.131eda85.js"><link rel="prefetch" href="/assets/release-notes.html.04856ad8.js"><link rel="prefetch" href="/assets/reset.html.d0bfc483.js"><link rel="prefetch" href="/assets/retransform.html.c9192c21.js"><link rel="prefetch" href="/assets/save-log.html.98569baa.js"><link rel="prefetch" href="/assets/sc.html.ca90459f.js"><link rel="prefetch" href="/assets/session.html.c6d60170.js"><link rel="prefetch" href="/assets/sm.html.917b7686.js"><link rel="prefetch" href="/assets/spring-boot-starter.html.2275b1d1.js"><link rel="prefetch" href="/assets/stack.html.329f3718.js"><link rel="prefetch" href="/assets/start-arthas.html.7e78d61c.js"><link rel="prefetch" href="/assets/stop.html.ddd4dfcf.js"><link rel="prefetch" href="/assets/sysenv.html.550996fa.js"><link rel="prefetch" href="/assets/sysprop.html.316dbec1.js"><link rel="prefetch" href="/assets/tee.html.254ce742.js"><link rel="prefetch" href="/assets/thread.html.b59e3f87.js"><link rel="prefetch" href="/assets/trace.html.3395706c.js"><link rel="prefetch" href="/assets/tt.html.fd24ef06.js"><link rel="prefetch" href="/assets/tunnel.html.1b033e25.js"><link rel="prefetch" href="/assets/version.html.259284d9.js"><link rel="prefetch" href="/assets/vmoption.html.51f7f672.js"><link rel="prefetch" href="/assets/vmtool.html.bb462e44.js"><link rel="prefetch" href="/assets/watch.html.6f653872.js"><link rel="prefetch" href="/assets/web-console.html.5d069eff.js"><link rel="prefetch" href="/assets/404.html.34e1ef06.js"><link rel="prefetch" href="/assets/404.1c9c0342.js"><link rel="prefetch" href="/assets/Layout.a463f6d4.js">
|
|
<link rel="stylesheet" href="/assets/style.3627c3cf.css">
|
|
</head>
|
|
<body>
|
|
<div id="app"><!--[--><div class="theme-container"><!--[--><header class="navbar"><div class="toggle-sidebar-button" title="toggle sidebar" aria-expanded="false" role="button" tabindex="0"><div class="icon" aria-hidden="true"><span></span><span></span><span></span></div></div><span><a href="/en/" class="" data-v-2aa8cc94><!----><span class="site-name can-hide" data-v-2aa8cc94>arthas</span><span class="navbar-version" data-v-2aa8cc94>v3.6.4</span></a></span><div class="navbar-items-wrapper" style=""><!--[--><!--]--><nav class="navbar-items can-hide"><!--[--><div class="navbar-item"><a href="/en/" class="" aria-label="HOME"><!--[--><!--]--> HOME <!--[--><!--]--></a></div><div class="navbar-item"><a class="external-link" href="/doc/arthas-tutorials.html?language=en&id=arthas-basics" rel="noopener noreferrer" target="_blank" aria-label="ONLINE TUTORIALS"><!--[--><!--]--><span>ONLINE TUTORIALS</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></div><div class="navbar-item"><a href="/en/doc" class="router-link-active" aria-label="DOCS"><!--[--><!--]--> DOCS <!--[--><!--]--></a></div><div class="navbar-item"><a href="/en/doc/commands.md" class="" aria-label="COMMANDS"><!--[--><!--]--> COMMANDS <!--[--><!--]--></a></div><div class="navbar-item"><a href="/en/doc/download.md" class="" aria-label="DOWNLOAD"><!--[--><!--]--> DOWNLOAD <!--[--><!--]--></a></div><div class="navbar-item"><div class="navbar-dropdown-wrapper"><button class="navbar-dropdown-title" type="button" aria-label="SOLUTIONS"><span class="title">SOLUTIONS</span><span class="arrow down"></span></button><button class="navbar-dropdown-title-mobile" type="button" aria-label="SOLUTIONS"><span class="title">SOLUTIONS</span><span class="right arrow"></span></button><ul style="display:none;" class="navbar-dropdown"><!--[--><li class="navbar-dropdown-item"><a class="external-link" href="https://cn.aliyun.com/product/aliware/mse?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="Microservice solutions"><!--[--><!--]--><span>Microservice solutions</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a class="external-link" href="https://www.aliyun.com/aliware/txc?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="Distributed transaction solutions"><!--[--><!--]--><span>Distributed transaction solutions</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a class="external-link" href="https://www.aliyun.com/product/ahas?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="High-availability solution"><!--[--><!--]--><span>High-availability solution</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a class="external-link" href="https://cn.aliyun.com/product/aliware/sae?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="Serverless solution for miscoservices"><!--[--><!--]--><span>Serverless solution for miscoservices</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a class="external-link" href="https://www.aliyun.com/product/edas?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="PaaS solution"><!--[--><!--]--><span>PaaS solution</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a class="external-link" href="https://www.aliyun.com/product/servicemesh?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="Service mesh solution"><!--[--><!--]--><span>Service mesh solution</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><!--]--></ul></div></div><div class="navbar-item"><div class="navbar-dropdown-wrapper"><button class="navbar-dropdown-title" type="button" aria-label="Select language"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="1em" height="1em" style="height:1.25rem;width:1.25rem;vertical-align:bottom;" viewbox="0 0 24 24"><path fill="currentColor" d="M13.35 22q-.6 0-.862-.387q-.263-.388-.063-.963l3.65-9.675q.15-.4.563-.688Q17.05 10 17.5 10q.425 0 .85.287q.425.288.575.688l3.65 9.675q.2.575-.062.963q-.263.387-.888.387q-.275 0-.5-.175q-.225-.175-.325-.425l-.85-2.45H15.1l-.875 2.45q-.1.25-.35.425q-.25.175-.525.175Zm2.35-4.8h3.6l-1.75-4.95h-.1ZM7.15 8.55q.4.725.85 1.337q.45.613 1.05 1.263q1.1-1.2 1.825-2.462Q11.6 7.425 12.1 6H2q-.425 0-.712-.287Q1 5.425 1 5t.288-.713Q1.575 4 2 4h6V3q0-.425.288-.713Q8.575 2 9 2t.713.287Q10 2.575 10 3v1h6q.425 0 .712.287Q17 4.575 17 5t-.288.713Q16.425 6 16 6h-1.9q-.525 1.775-1.425 3.45q-.9 1.675-2.225 3.15l2.4 2.45l-.75 2.05L9 14l-4.3 4.3q-.275.275-.7.275q-.425 0-.7-.275q-.275-.275-.275-.7q0-.425.275-.7l4.35-4.35q-.675-.775-1.25-1.563q-.575-.787-1.025-1.662Q5.1 8.8 5.35 8.4t.875-.4q.25 0 .525.162q.275.163.4.388Z"></path></svg><span class="arrow down"></span></button><button class="navbar-dropdown-title-mobile" type="button" aria-label="Select language"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="1em" height="1em" style="height:1.25rem;width:1.25rem;vertical-align:bottom;" viewbox="0 0 24 24"><path fill="currentColor" d="M13.35 22q-.6 0-.862-.387q-.263-.388-.063-.963l3.65-9.675q.15-.4.563-.688Q17.05 10 17.5 10q.425 0 .85.287q.425.288.575.688l3.65 9.675q.2.575-.062.963q-.263.387-.888.387q-.275 0-.5-.175q-.225-.175-.325-.425l-.85-2.45H15.1l-.875 2.45q-.1.25-.35.425q-.25.175-.525.175Zm2.35-4.8h3.6l-1.75-4.95h-.1ZM7.15 8.55q.4.725.85 1.337q.45.613 1.05 1.263q1.1-1.2 1.825-2.462Q11.6 7.425 12.1 6H2q-.425 0-.712-.287Q1 5.425 1 5t.288-.713Q1.575 4 2 4h6V3q0-.425.288-.713Q8.575 2 9 2t.713.287Q10 2.575 10 3v1h6q.425 0 .712.287Q17 4.575 17 5t-.288.713Q16.425 6 16 6h-1.9q-.525 1.775-1.425 3.45q-.9 1.675-2.225 3.15l2.4 2.45l-.75 2.05L9 14l-4.3 4.3q-.275.275-.7.275q-.425 0-.7-.275q-.275-.275-.275-.7q0-.425.275-.7l4.35-4.35q-.675-.775-1.25-1.563q-.575-.787-1.025-1.662Q5.1 8.8 5.35 8.4t.875-.4q.25 0 .525.162q.275.163.4.388Z"></path></svg><span class="right arrow"></span></button><ul style="display:none;" class="navbar-dropdown"><!--[--><li class="navbar-dropdown-item"><a href="/doc/advice-class.html" class="" aria-label="简体中文"><!--[--><!--]--> 简体中文 <!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a aria-current="page" href="/en/doc/advice-class.html" class="router-link-active router-link-exact-active router-link-active" aria-label="English"><!--[--><!--]--> English <!--[--><!--]--></a></li><!--]--></ul></div></div><div class="navbar-item"><a class="external-link" href="https://github.com/alibaba/arthas" rel="noopener noreferrer" target="_blank" aria-label="GitHub"><!--[--><!--]--><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewbox="0 0 24 24" style="height:1.25rem;width:1.25rem;vertical-align:bottom;"><path fill="currentColor" d="M12 2A10 10 0 0 0 2 12c0 4.42 2.87 8.17 6.84 9.5c.5.08.66-.23.66-.5v-1.69c-2.77.6-3.36-1.34-3.36-1.34c-.46-1.16-1.11-1.47-1.11-1.47c-.91-.62.07-.6.07-.6c1 .07 1.53 1.03 1.53 1.03c.87 1.52 2.34 1.07 2.91.83c.09-.65.35-1.09.63-1.34c-2.22-.25-4.55-1.11-4.55-4.92c0-1.11.38-2 1.03-2.71c-.1-.25-.45-1.29.1-2.64c0 0 .84-.27 2.75 1.02c.79-.22 1.65-.33 2.5-.33c.85 0 1.71.11 2.5.33c1.91-1.29 2.75-1.02 2.75-1.02c.55 1.35.2 2.39.1 2.64c.65.71 1.03 1.6 1.03 2.71c0 3.82-2.34 4.66-4.57 4.91c.36.31.69.92.69 1.85V21c0 .27.16.59.67.5C19.14 20.16 22 16.42 22 12A10 10 0 0 0 12 2Z"></path></svg><!----><!--[--><!--]--></a></div><!--]--></nav><!--[--><!--]--><button class="toggle-color-mode-button" title="toggle color mode"><svg style="" class="icon" focusable="false" viewBox="0 0 32 32"><path d="M16 12.005a4 4 0 1 1-4 4a4.005 4.005 0 0 1 4-4m0-2a6 6 0 1 0 6 6a6 6 0 0 0-6-6z" fill="currentColor"></path><path d="M5.394 6.813l1.414-1.415l3.506 3.506L8.9 10.318z" fill="currentColor"></path><path d="M2 15.005h5v2H2z" fill="currentColor"></path><path d="M5.394 25.197L8.9 21.691l1.414 1.415l-3.506 3.505z" fill="currentColor"></path><path d="M15 25.005h2v5h-2z" fill="currentColor"></path><path d="M21.687 23.106l1.414-1.415l3.506 3.506l-1.414 1.414z" fill="currentColor"></path><path d="M25 15.005h5v2h-5z" fill="currentColor"></path><path d="M21.687 8.904l3.506-3.506l1.414 1.415l-3.506 3.505z" fill="currentColor"></path><path d="M15 2.005h2v5h-2z" fill="currentColor"></path></svg><svg style="display:none;" class="icon" focusable="false" viewBox="0 0 32 32"><path d="M13.502 5.414a15.075 15.075 0 0 0 11.594 18.194a11.113 11.113 0 0 1-7.975 3.39c-.138 0-.278.005-.418 0a11.094 11.094 0 0 1-3.2-21.584M14.98 3a1.002 1.002 0 0 0-.175.016a13.096 13.096 0 0 0 1.825 25.981c.164.006.328 0 .49 0a13.072 13.072 0 0 0 10.703-5.555a1.01 1.01 0 0 0-.783-1.565A13.08 13.08 0 0 1 15.89 4.38A1.015 1.015 0 0 0 14.98 3z" fill="currentColor"></path></svg></button><div id="docsearch-container"></div></div></header><!--]--><div class="sidebar-mask"></div><!--[--><aside class="sidebar"><nav class="navbar-items"><!--[--><div class="navbar-item"><a href="/en/" class="" aria-label="HOME"><!--[--><!--]--> HOME <!--[--><!--]--></a></div><div class="navbar-item"><a class="external-link" href="/doc/arthas-tutorials.html?language=en&id=arthas-basics" rel="noopener noreferrer" target="_blank" aria-label="ONLINE TUTORIALS"><!--[--><!--]--><span>ONLINE TUTORIALS</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></div><div class="navbar-item"><a href="/en/doc" class="router-link-active" aria-label="DOCS"><!--[--><!--]--> DOCS <!--[--><!--]--></a></div><div class="navbar-item"><a href="/en/doc/commands.md" class="" aria-label="COMMANDS"><!--[--><!--]--> COMMANDS <!--[--><!--]--></a></div><div class="navbar-item"><a href="/en/doc/download.md" class="" aria-label="DOWNLOAD"><!--[--><!--]--> DOWNLOAD <!--[--><!--]--></a></div><div class="navbar-item"><div class="navbar-dropdown-wrapper"><button class="navbar-dropdown-title" type="button" aria-label="SOLUTIONS"><span class="title">SOLUTIONS</span><span class="arrow down"></span></button><button class="navbar-dropdown-title-mobile" type="button" aria-label="SOLUTIONS"><span class="title">SOLUTIONS</span><span class="right arrow"></span></button><ul style="display:none;" class="navbar-dropdown"><!--[--><li class="navbar-dropdown-item"><a class="external-link" href="https://cn.aliyun.com/product/aliware/mse?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="Microservice solutions"><!--[--><!--]--><span>Microservice solutions</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a class="external-link" href="https://www.aliyun.com/aliware/txc?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="Distributed transaction solutions"><!--[--><!--]--><span>Distributed transaction solutions</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a class="external-link" href="https://www.aliyun.com/product/ahas?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="High-availability solution"><!--[--><!--]--><span>High-availability solution</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a class="external-link" href="https://cn.aliyun.com/product/aliware/sae?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="Serverless solution for miscoservices"><!--[--><!--]--><span>Serverless solution for miscoservices</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a class="external-link" href="https://www.aliyun.com/product/edas?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="PaaS solution"><!--[--><!--]--><span>PaaS solution</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a class="external-link" href="https://www.aliyun.com/product/servicemesh?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="Service mesh solution"><!--[--><!--]--><span>Service mesh solution</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></li><!--]--></ul></div></div><div class="navbar-item"><div class="navbar-dropdown-wrapper"><button class="navbar-dropdown-title" type="button" aria-label="Select language"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="1em" height="1em" style="height:1.25rem;width:1.25rem;vertical-align:bottom;" viewbox="0 0 24 24"><path fill="currentColor" d="M13.35 22q-.6 0-.862-.387q-.263-.388-.063-.963l3.65-9.675q.15-.4.563-.688Q17.05 10 17.5 10q.425 0 .85.287q.425.288.575.688l3.65 9.675q.2.575-.062.963q-.263.387-.888.387q-.275 0-.5-.175q-.225-.175-.325-.425l-.85-2.45H15.1l-.875 2.45q-.1.25-.35.425q-.25.175-.525.175Zm2.35-4.8h3.6l-1.75-4.95h-.1ZM7.15 8.55q.4.725.85 1.337q.45.613 1.05 1.263q1.1-1.2 1.825-2.462Q11.6 7.425 12.1 6H2q-.425 0-.712-.287Q1 5.425 1 5t.288-.713Q1.575 4 2 4h6V3q0-.425.288-.713Q8.575 2 9 2t.713.287Q10 2.575 10 3v1h6q.425 0 .712.287Q17 4.575 17 5t-.288.713Q16.425 6 16 6h-1.9q-.525 1.775-1.425 3.45q-.9 1.675-2.225 3.15l2.4 2.45l-.75 2.05L9 14l-4.3 4.3q-.275.275-.7.275q-.425 0-.7-.275q-.275-.275-.275-.7q0-.425.275-.7l4.35-4.35q-.675-.775-1.25-1.563q-.575-.787-1.025-1.662Q5.1 8.8 5.35 8.4t.875-.4q.25 0 .525.162q.275.163.4.388Z"></path></svg><span class="arrow down"></span></button><button class="navbar-dropdown-title-mobile" type="button" aria-label="Select language"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="1em" height="1em" style="height:1.25rem;width:1.25rem;vertical-align:bottom;" viewbox="0 0 24 24"><path fill="currentColor" d="M13.35 22q-.6 0-.862-.387q-.263-.388-.063-.963l3.65-9.675q.15-.4.563-.688Q17.05 10 17.5 10q.425 0 .85.287q.425.288.575.688l3.65 9.675q.2.575-.062.963q-.263.387-.888.387q-.275 0-.5-.175q-.225-.175-.325-.425l-.85-2.45H15.1l-.875 2.45q-.1.25-.35.425q-.25.175-.525.175Zm2.35-4.8h3.6l-1.75-4.95h-.1ZM7.15 8.55q.4.725.85 1.337q.45.613 1.05 1.263q1.1-1.2 1.825-2.462Q11.6 7.425 12.1 6H2q-.425 0-.712-.287Q1 5.425 1 5t.288-.713Q1.575 4 2 4h6V3q0-.425.288-.713Q8.575 2 9 2t.713.287Q10 2.575 10 3v1h6q.425 0 .712.287Q17 4.575 17 5t-.288.713Q16.425 6 16 6h-1.9q-.525 1.775-1.425 3.45q-.9 1.675-2.225 3.15l2.4 2.45l-.75 2.05L9 14l-4.3 4.3q-.275.275-.7.275q-.425 0-.7-.275q-.275-.275-.275-.7q0-.425.275-.7l4.35-4.35q-.675-.775-1.25-1.563q-.575-.787-1.025-1.662Q5.1 8.8 5.35 8.4t.875-.4q.25 0 .525.162q.275.163.4.388Z"></path></svg><span class="right arrow"></span></button><ul style="display:none;" class="navbar-dropdown"><!--[--><li class="navbar-dropdown-item"><a href="/doc/advice-class.html" class="" aria-label="简体中文"><!--[--><!--]--> 简体中文 <!--[--><!--]--></a></li><li class="navbar-dropdown-item"><a aria-current="page" href="/en/doc/advice-class.html" class="router-link-active router-link-exact-active router-link-active" aria-label="English"><!--[--><!--]--> English <!--[--><!--]--></a></li><!--]--></ul></div></div><div class="navbar-item"><a class="external-link" href="https://github.com/alibaba/arthas" rel="noopener noreferrer" target="_blank" aria-label="GitHub"><!--[--><!--]--><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewbox="0 0 24 24" style="height:1.25rem;width:1.25rem;vertical-align:bottom;"><path fill="currentColor" d="M12 2A10 10 0 0 0 2 12c0 4.42 2.87 8.17 6.84 9.5c.5.08.66-.23.66-.5v-1.69c-2.77.6-3.36-1.34-3.36-1.34c-.46-1.16-1.11-1.47-1.11-1.47c-.91-.62.07-.6.07-.6c1 .07 1.53 1.03 1.53 1.03c.87 1.52 2.34 1.07 2.91.83c.09-.65.35-1.09.63-1.34c-2.22-.25-4.55-1.11-4.55-4.92c0-1.11.38-2 1.03-2.71c-.1-.25-.45-1.29.1-2.64c0 0 .84-.27 2.75 1.02c.79-.22 1.65-.33 2.5-.33c.85 0 1.71.11 2.5.33c1.91-1.29 2.75-1.02 2.75-1.02c.55 1.35.2 2.39.1 2.64c.65.71 1.03 1.6 1.03 2.71c0 3.82-2.34 4.66-4.57 4.91c.36.31.69.92.69 1.85V21c0 .27.16.59.67.5C19.14 20.16 22 16.42 22 12A10 10 0 0 0 12 2Z"></path></svg><!----><!--[--><!--]--></a></div><!--]--></nav><!--[--><!--]--><ul class="sidebar-items"><!--[--><li><p tabindex="0" class="sidebar-item sidebar-heading">DOCS <!----></p><ul style="display:none;" class="sidebar-item-children"><!--[--><li><a href="/en/doc/" class="router-link-active sidebar-item" aria-label="Introduction"><!--[--><!--]--> Introduction <!--[--><!--]--></a><!----></li><li><a href="/en/doc/quick-start.html" class="sidebar-item" aria-label="Quick Start"><!--[--><!--]--> Quick Start <!--[--><!--]--></a><!----></li><li><a href="/en/doc/install-detail.html" class="sidebar-item" aria-label="Install Arthas"><!--[--><!--]--> Install Arthas <!--[--><!--]--></a><!----></li><li><a href="/en/doc/download.html" class="sidebar-item" aria-label="Download"><!--[--><!--]--> Download <!--[--><!--]--></a><!----></li><li><a href="/en/doc/advanced-use.html" class="sidebar-item" aria-label="Advanced Usage"><!--[--><!--]--> Advanced Usage <!--[--><!--]--></a><!----></li><li><p tabindex="0" class="sidebar-item collapsible">Other features <span class="right arrow"></span></p><ul style="display:none;" class="sidebar-item-children"><!--[--><li><a href="/en/doc/async.html" class="sidebar-item" aria-label="Arthas Async Jobs"><!--[--><!--]--> Arthas Async Jobs <!--[--><!--]--></a><!----></li><li><a href="/en/doc/save-log.html" class="sidebar-item" aria-label="Log command outputs"><!--[--><!--]--> Log command outputs <!--[--><!--]--></a><!----></li><li><a href="/en/doc/batch-support.html" class="sidebar-item" aria-label="Batch Processing"><!--[--><!--]--> Batch Processing <!--[--><!--]--></a><!----></li><li><p tabindex="0" class="sidebar-item">How to use ognl <!----></p><ul style="display:none;" class="sidebar-item-children"><!--[--><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/issues/11" rel="noopener noreferrer" target="_blank" aria-label="Basic ognl example"><!--[--><!--]--><span>Basic ognl example</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/issues/71" rel="noopener noreferrer" target="_blank" aria-label="Ognl special uses"><!--[--><!--]--><span>Ognl special uses</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a><!----></li><!--]--></ul></li><!--]--></ul></li><li><a href="/en/doc/commands.md" class="sidebar-item collapsible" aria-label="All Commands"><!--[--><!--]--> All Commands <!--[--><!--]--></a><ul style="display:none;" class="sidebar-item-children"><!--[--><li><a href="/en/doc/dashboard.html" class="sidebar-item" aria-label="dashboard"><!--[--><!--]--> dashboard <!--[--><!--]--></a><!----></li><li><a href="/en/doc/getstatic.html" class="sidebar-item" aria-label="getstatic"><!--[--><!--]--> getstatic <!--[--><!--]--></a><!----></li><li><a href="/en/doc/heapdump.html" class="sidebar-item" aria-label="heapdump"><!--[--><!--]--> heapdump <!--[--><!--]--></a><!----></li><li><a href="/en/doc/jvm.html" class="sidebar-item" aria-label="jvm"><!--[--><!--]--> jvm <!--[--><!--]--></a><!----></li><li><a href="/en/doc/logger.html" class="sidebar-item" aria-label="logger"><!--[--><!--]--> logger <!--[--><!--]--></a><!----></li><li><a href="/en/doc/mbean.html" class="sidebar-item" aria-label="mbean"><!--[--><!--]--> mbean <!--[--><!--]--></a><!----></li><li><a href="/en/doc/memory.html" class="sidebar-item" aria-label="memory"><!--[--><!--]--> memory <!--[--><!--]--></a><!----></li><li><a href="/en/doc/ognl.html" class="sidebar-item" aria-label="ognl"><!--[--><!--]--> ognl <!--[--><!--]--></a><!----></li><li><a href="/en/doc/perfcounter.html" class="sidebar-item" aria-label="perfcounter"><!--[--><!--]--> perfcounter <!--[--><!--]--></a><!----></li><li><a href="/en/doc/sysenv.html" class="sidebar-item" aria-label="sysenv"><!--[--><!--]--> sysenv <!--[--><!--]--></a><!----></li><li><a href="/en/doc/sysprop.html" class="sidebar-item" aria-label="sysprop"><!--[--><!--]--> sysprop <!--[--><!--]--></a><!----></li><li><a href="/en/doc/thread.html" class="sidebar-item" aria-label="thread"><!--[--><!--]--> thread <!--[--><!--]--></a><!----></li><li><a href="/en/doc/vmoption.html" class="sidebar-item" aria-label="vmoption"><!--[--><!--]--> vmoption <!--[--><!--]--></a><!----></li><li><a href="/en/doc/vmtool.html" class="sidebar-item" aria-label="vmtool"><!--[--><!--]--> vmtool <!--[--><!--]--></a><!----></li><li><a href="/en/doc/classloader.html" class="sidebar-item" aria-label="classloader"><!--[--><!--]--> classloader <!--[--><!--]--></a><!----></li><li><a href="/en/doc/dump.html" class="sidebar-item" aria-label="dump"><!--[--><!--]--> dump <!--[--><!--]--></a><!----></li><li><a href="/en/doc/jad.html" class="sidebar-item" aria-label="jad"><!--[--><!--]--> jad <!--[--><!--]--></a><!----></li><li><a href="/en/doc/mc.html" class="sidebar-item" aria-label="mc"><!--[--><!--]--> mc <!--[--><!--]--></a><!----></li><li><a href="/en/doc/redefine.html" class="sidebar-item" aria-label="redefine"><!--[--><!--]--> redefine <!--[--><!--]--></a><!----></li><li><a href="/en/doc/retransform.html" class="sidebar-item" aria-label="retransform"><!--[--><!--]--> retransform <!--[--><!--]--></a><!----></li><li><a href="/en/doc/sc.html" class="sidebar-item" aria-label="sc"><!--[--><!--]--> sc <!--[--><!--]--></a><!----></li><li><a href="/en/doc/sm.html" class="sidebar-item" aria-label="sm"><!--[--><!--]--> sm <!--[--><!--]--></a><!----></li><li><a href="/en/doc/monitor.html" class="sidebar-item" aria-label="monitor"><!--[--><!--]--> monitor <!--[--><!--]--></a><!----></li><li><a href="/en/doc/stack.html" class="sidebar-item" aria-label="stack"><!--[--><!--]--> stack <!--[--><!--]--></a><!----></li><li><a href="/en/doc/trace.html" class="sidebar-item" aria-label="trace"><!--[--><!--]--> trace <!--[--><!--]--></a><!----></li><li><a href="/en/doc/tt.html" class="sidebar-item" aria-label="tt"><!--[--><!--]--> tt <!--[--><!--]--></a><!----></li><li><a href="/en/doc/watch.html" class="sidebar-item" aria-label="watch"><!--[--><!--]--> watch <!--[--><!--]--></a><!----></li><li><a href="/en/doc/profiler.html" class="sidebar-item" aria-label="profiler"><!--[--><!--]--> profiler <!--[--><!--]--></a><!----></li><li><a href="/en/doc/auth.html" class="sidebar-item" aria-label="auth"><!--[--><!--]--> auth <!--[--><!--]--></a><!----></li><li><a href="/en/doc/options.html" class="sidebar-item" aria-label="options"><!--[--><!--]--> options <!--[--><!--]--></a><!----></li><li><a href="/en/doc/base64.html" class="sidebar-item" aria-label="base64"><!--[--><!--]--> base64 <!--[--><!--]--></a><!----></li><li><a href="/en/doc/cat.html" class="sidebar-item" aria-label="cat"><!--[--><!--]--> cat <!--[--><!--]--></a><!----></li><li><a href="/en/doc/cls.html" class="sidebar-item" aria-label="cls"><!--[--><!--]--> cls <!--[--><!--]--></a><!----></li><li><a href="/en/doc/echo.html" class="sidebar-item" aria-label="echo"><!--[--><!--]--> echo <!--[--><!--]--></a><!----></li><li><a href="/en/doc/grep.html" class="sidebar-item" aria-label="grep"><!--[--><!--]--> grep <!--[--><!--]--></a><!----></li><li><a href="/en/doc/help.html" class="sidebar-item" aria-label="help"><!--[--><!--]--> help <!--[--><!--]--></a><!----></li><li><a href="/en/doc/history.html" class="sidebar-item" aria-label="history"><!--[--><!--]--> history <!--[--><!--]--></a><!----></li><li><a href="/en/doc/keymap.html" class="sidebar-item" aria-label="keymap"><!--[--><!--]--> keymap <!--[--><!--]--></a><!----></li><li><a href="/en/doc/pwd.html" class="sidebar-item" aria-label="pwd"><!--[--><!--]--> pwd <!--[--><!--]--></a><!----></li><li><a href="/en/doc/quit.html" class="sidebar-item" aria-label="quit"><!--[--><!--]--> quit <!--[--><!--]--></a><!----></li><li><a href="/en/doc/reset.html" class="sidebar-item" aria-label="reset"><!--[--><!--]--> reset <!--[--><!--]--></a><!----></li><li><a href="/en/doc/session.html" class="sidebar-item" aria-label="session"><!--[--><!--]--> session <!--[--><!--]--></a><!----></li><li><a href="/en/doc/stop.html" class="sidebar-item" aria-label="stop"><!--[--><!--]--> stop <!--[--><!--]--></a><!----></li><li><a href="/en/doc/tee.html" class="sidebar-item" aria-label="tee"><!--[--><!--]--> tee <!--[--><!--]--></a><!----></li><li><a href="/en/doc/version.html" class="sidebar-item" aria-label="version"><!--[--><!--]--> version <!--[--><!--]--></a><!----></li><!--]--></ul></li><li><a href="/en/doc/web-console.html" class="sidebar-item" aria-label="Web Console"><!--[--><!--]--> Web Console <!--[--><!--]--></a><!----></li><li><a href="/en/doc/tunnel.html" class="sidebar-item" aria-label="Arthas Tunnel"><!--[--><!--]--> Arthas Tunnel <!--[--><!--]--></a><!----></li><li><a href="/en/doc/http-api.html" class="sidebar-item" aria-label="Http API"><!--[--><!--]--> Http API <!--[--><!--]--></a><!----></li><li><a href="/en/doc/docker.html" class="sidebar-item" aria-label="Docker"><!--[--><!--]--> Docker <!--[--><!--]--></a><!----></li><li><a href="/en/doc/spring-boot-starter.html" class="sidebar-item" aria-label="Arthas Spring Boot Starter"><!--[--><!--]--> Arthas Spring Boot Starter <!--[--><!--]--></a><!----></li><li><a href="/en/doc/idea-plugin.html" class="sidebar-item" aria-label="IDEA Plugin"><!--[--><!--]--> IDEA Plugin <!--[--><!--]--></a><!----></li><li><a href="/en/doc/faq.html" class="sidebar-item" aria-label="FAQ"><!--[--><!--]--> FAQ <!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/issues?q=label%3Auser-case" rel="noopener noreferrer" target="_blank" aria-label="User cases"><!--[--><!--]--><span>User cases</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas" rel="noopener noreferrer" target="_blank" aria-label="Start me at github"><!--[--><!--]--><span>Start me at github</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/blob/master/CONTRIBUTING.md" rel="noopener noreferrer" target="_blank" aria-label="Compile and debug/CONTRIBUTING"><!--[--><!--]--><span>Compile and debug/CONTRIBUTING</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/releases" rel="noopener noreferrer" target="_blank" aria-label="Release Notes"><!--[--><!--]--><span>Release Notes</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a><!----></li><li><a href="/en/doc/contact-us.md" class="sidebar-item" aria-label="Contact us"><!--[--><!--]--> Contact us <!--[--><!--]--></a><!----></li><!--]--></ul></li><!--]--></ul><!--[--><!--]--></aside><!--]--><!--[--><main class="page" data-v-8e2a76de><!--[--><!--]--><div class="theme-default-content" data-v-8e2a76de><!--[--><!--]--><!----><div data-v-8e2a76de><h1 id="fundamental-fields-in-expressions" tabindex="-1"><a class="header-anchor" href="#fundamental-fields-in-expressions" aria-hidden="true">#</a> Fundamental Fields in Expressions</h1><p>There is a very fundamental class <code>Advice</code> for the expressions used in filtering, tracing or monitoring and other aspects in commands.</p><div class="language-java ext-java line-numbers-mode"><pre class="language-java"><code><span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">Advice</span> <span class="token punctuation">{</span>
|
|
|
|
<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token class-name">ClassLoader</span> loader<span class="token punctuation">;</span>
|
|
<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token class-name">Class</span><span class="token generics"><span class="token punctuation"><</span><span class="token operator">?</span><span class="token punctuation">></span></span> clazz<span class="token punctuation">;</span>
|
|
<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token class-name">ArthasMethod</span> method<span class="token punctuation">;</span>
|
|
<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token class-name">Object</span> target<span class="token punctuation">;</span>
|
|
<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token class-name">Object</span><span class="token punctuation">[</span><span class="token punctuation">]</span> params<span class="token punctuation">;</span>
|
|
<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token class-name">Object</span> returnObj<span class="token punctuation">;</span>
|
|
<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token class-name">Throwable</span> throwExp<span class="token punctuation">;</span>
|
|
<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token keyword">boolean</span> isBefore<span class="token punctuation">;</span>
|
|
<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token keyword">boolean</span> isThrow<span class="token punctuation">;</span>
|
|
<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token keyword">boolean</span> isReturn<span class="token punctuation">;</span>
|
|
|
|
<span class="token comment">// getter/setter</span>
|
|
<span class="token punctuation">}</span>
|
|
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>Description for the variables in the class <code>Advice</code>:</p><table><thead><tr><th style="text-align:right;">Name</th><th style="text-align:left;">Specification</th></tr></thead><tbody><tr><td style="text-align:right;">loader</td><td style="text-align:left;">the class loader for the current called class</td></tr><tr><td style="text-align:right;">clazz</td><td style="text-align:left;">the reference to the current called class</td></tr><tr><td style="text-align:right;">method</td><td style="text-align:left;">the reference to the current called method</td></tr><tr><td style="text-align:right;">target</td><td style="text-align:left;">the instance of the current called class</td></tr><tr><td style="text-align:right;">params</td><td style="text-align:left;">the parameters for the current call, which is an array (when there's no parameter, it will be an empty array)</td></tr><tr><td style="text-align:right;">returnObj</td><td style="text-align:left;">the return value from the current call - only available when the method call returns normally (<code>isReturn==true</code>), and <code>null</code> is for <code>void</code> return value</td></tr><tr><td style="text-align:right;">throwExp</td><td style="text-align:left;">the exceptions thrown from the current call - only available when the method call throws exception (<code>isThrow==true</code>)</td></tr><tr><td style="text-align:right;">isBefore</td><td style="text-align:left;">flag to indicate the method is about to execute. <code>isBefore==true</code> but <code>isThrow==false</code> and <code>isReturn==false</code> since it's no way to know how the method call will end</td></tr><tr><td style="text-align:right;">isThrow</td><td style="text-align:left;">flag to indicate the method call ends with exception thrown</td></tr><tr><td style="text-align:right;">isReturn</td><td style="text-align:left;">flag to indicate the method call ends normally without exception thrown</td></tr></tbody></table><p>All variables listed above can be used directly in the <a href="https://commons.apache.org/proper/commons-ognl/language-guide.html" target="_blank" rel="noopener noreferrer">OGNL expression<span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span></a>. The command will not execute and exit if there's illegal OGNL grammar or unexpected variable in the expression.</p><ul><li><a href="https://github.com/alibaba/arthas/issues/71" target="_blank" rel="noopener noreferrer">typical use cases<span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span></a>;</li><li><a href="https://commons.apache.org/proper/commons-ognl/language-guide.html" target="_blank" rel="noopener noreferrer">OGNL language guide<span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span></a>.</li></ul></div><!--[--><!--]--></div><footer class="page-meta" data-v-8e2a76de><div class="meta-item edit-link"><a class="external-link meta-item-label" href="https://github.com/alibaba/arthas/edit/master/site/docs/en/doc/advice-class.md" rel="noopener noreferrer" target="_blank" aria-label="Edit this page on GitHub"><!--[--><!--]--><span>Edit this page on GitHub</span><span><svg class="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"><path fill="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><polygon fill="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><span class="external-link-icon-sr-only">open in new window</span></span><!--[--><!--]--></a></div><div class="meta-item last-updated"><span class="meta-item-label">Last Updated: </span><!----></div><div class="meta-item contributors"><span class="meta-item-label">Contributors: </span><span class="meta-item-info"><!--[--><!--[--><span class="contributor" title="email: hengyunabc@gmail.com">hengyunabc</span><!--[-->, <!--]--><!--]--><!--[--><span class="contributor" title="email: LHearen@126.com">Hearen</span><!--[-->, <!--]--><!--]--><!--[--><span class="contributor" title="email: ian.luo@gmail.com">beiwei30</span><!----><!--]--><!--]--></span></div></footer><!----><!--[--><!--]--></main><!--]--></div><!----><!--]--></div>
|
|
<script type="module" src="/assets/app.cdce46bf.js" defer></script>
|
|
</body>
|
|
</html>
|