<!DOCTYPE html>
<!-- [if IE 8]><html class="no - js lt - ie9" lang="zh - CN" > <![endif] -->
<!-- [if gt IE 8]><! --> < html class = "no-js" lang = "zh-CN" > <!-- <![endif] -->
< head >
< meta charset = "utf-8" >
< meta name = "viewport" content = "width=device-width, initial-scale=1.0" >
< title > Arthas异步调用 — Arthas 3.0.1-RC-SNAPSHOT 文档< / title >
< link rel = "stylesheet" href = "_static/css/theme.css" type = "text/css" / >
< link rel = "stylesheet" href = "_static/pygments.css" type = "text/css" / >
< link rel = "stylesheet" href = "_static/overrides.css" type = "text/css" / >
< link rel = "index" title = "索引" href = "genindex.html" / >
< link rel = "search" title = "搜索" href = "search.html" / >
< link rel = "next" title = "执行结果存日志" href = "save-log.html" / >
< link rel = "prev" title = "进阶使用" href = "advanced-use.html" / >
< script src = "_static/center_page.js" > < / script >
< script src = "_static/js/modernizr.min.js" > < / script >
< / head >
< body class = "wy-body-for-nav" >
< div class = "wy-grid-for-nav" >
< nav data-toggle = "wy-nav-shift" class = "wy-nav-side" >
< div class = "wy-side-scroll" >
< div class = "wy-side-nav-search" >
< a href = "index.html" class = "icon icon-home" > Arthas
< / a >
< div class = "version" >
3.0.1-RC-SNAPSHOT
< / div >
< div role = "search" >
< form id = "rtd-search-form" class = "wy-form" action = "search.html" method = "get" >
< input type = "text" name = "q" placeholder = "Search docs" / >
< input type = "hidden" name = "check_keywords" value = "yes" / >
< input type = "hidden" name = "area" value = "default" / >
< / form >
< / div >
< / div >
< div class = "wy-menu wy-menu-vertical" data-spy = "affix" role = "navigation" aria-label = "main navigation" >
< ul class = "current" >
< li class = "toctree-l1" > < a class = "reference internal" href = "install-detail.html" > 安装< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "quick-start.html" > 快速入门< / a > < / li >
< li class = "toctree-l1 current" > < a class = "reference internal" href = "advanced-use.html" > 进阶使用< / a > < ul class = "current" >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#" > 基础命令< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#jvm" > jvm相关< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#class-classloader" > class/classloader相关< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#monitor-watch-trace" > monitor/watch/trace相关< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#options" > options< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#" > 管道< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "advanced-use.html#" > 后台异步任务< / a > < / li >
< li class = "toctree-l2 current" > < a class = "reference internal" href = "advanced-use.html#" > 其他特性< / a > < ul class = "current" >
< li class = "toctree-l3 current" > < a class = "current reference internal" href = "#" > 异步命令支持< / a > < ul >
< li class = "toctree-l4" > < a class = "reference internal" href = "#" > 1. 使用& 在后台执行任务< / a > < / li >
< li class = "toctree-l4" > < a class = "reference internal" href = "#jobs" > 2. 通过jobs查看任务< / a > < / li >
< li class = "toctree-l4" > < a class = "reference internal" href = "#" > 3. 任务暂停和取消< / a > < / li >
< li class = "toctree-l4" > < a class = "reference internal" href = "#fgbg" > 4. fg、bg命令， < / a > < / li >
< li class = "toctree-l4" > < a class = "reference internal" href = "#" > 5. 任务输出重定向< / a > < / li >
< li class = "toctree-l4" > < a class = "reference internal" href = "#" > 6. 停止命令< / a > < / li >
< li class = "toctree-l4" > < a class = "reference internal" href = "#" > 7. 其他< / a > < / li >
< / ul >
< / li >
< li class = "toctree-l3" > < a class = "reference internal" href = "save-log.html" > 执行结果存日志< / a > < / li >
< li class = "toctree-l3" > < a class = "reference internal" href = "batch-support.html" > 批处理的支持< / a > < / li >
< li class = "toctree-l3" > < a class = "reference external" href = "https://github.com/alibaba/arthas/issues/11" > ognl表达式的用法说明< / a > < / li >
< / ul >
< / li >
< / ul >
< / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "commands.html" > 命令列表< / a > < / li >
< li class = "toctree-l1" > < a class = "reference external" href = "https://github.com/alibaba/arthas/labels/user-case" > 用户案例< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "release-notes.html" > Release Notes< / a > < / li >
< li class = "toctree-l1" > < a class = "reference external" href = "https://github.com/alibaba/arthas/labels/question-answered" > Questions and answers< / a > < / li >
< li class = "toctree-l1" > < a class = "reference external" href = "https://github.com/alibaba/arthas" > Fork me at GitHub< / a > < / li >
< li class = "toctree-l1" > < a class = "reference external" href = "https://github.com/alibaba/arthas/CONTRIBUTING.md" > 参与贡献< / a > < / li >
< / ul >
< / div >
< / div >
< / nav >
< section data-toggle = "wy-nav-shift" class = "wy-nav-content-wrap" >
< nav class = "wy-nav-top" aria-label = "top navigation" >
< i data-toggle = "wy-nav-top" class = "fa fa-bars" > < / i >
< a href = "index.html" > Arthas< / a >
< / nav >
< div class = "wy-nav-content" >
< div class = "rst-content" >
< div role = "navigation" aria-label = "breadcrumbs navigation" >
< ul class = "wy-breadcrumbs" >
< li > < a href = "index.html" > Docs< / a > » < / li >
< li > < a href = "advanced-use.html" > 进阶使用< / a > » < / li >
< li > Arthas异步调用< / li >
< li class = "wy-breadcrumbs-aside" >
< a href = "https://github.com/alibaba/arthas/blob/master/site/src/site/sphinx/async.md" class = "fa fa-github" > Edit on GitHub< / a >
< / li >
< / ul >
< hr / >
< / div >
< div role = "main" class = "document" itemscope = "itemscope" itemtype = "http://schema.org/Article" >
< div itemprop = "articleBody" >
< div class = "section" id = "arthas" >
< span id = "arthas" > < / span > < h1 > Arthas异步调用< a class = "headerlink" href = "#arthas" title = "永久链接至标题" > ¶< / a > < / h1 >
< p > arthas中的异步调用， < a class = "reference external" href = "https://ehlxr.me/2017/01/18/Linux-%E4%B8%AD-fg%E3%80%81bg%E3%80%81jobs%E3%80%81-%E6%8C%87%E4%BB%A4/" > linux任务相关介绍< / a > 。< / p >
< div class = "section" id = "" >
< span id = "id1" > < / span > < h2 > 1. 使用& 在后台执行任务< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h2 >
< p > 比如希望执行后台执行trace命令， < / p >
< div class = "highlight-sh notranslate" > < div class = "highlight" > < pre > < span > < / span > trace Test t < span class = "p" > & < / span >
< / pre > < / div >
< / div >
< p > 这时命令在后台执行， < / p >
< / div >
< div class = "section" id = "jobs" >
< span id = "jobs" > < / span > < h2 > 2. 通过jobs查看任务< a class = "headerlink" href = "#jobs" title = "永久链接至标题" > ¶< / a > < / h2 >
< p > 如果希望查看当前有哪些arthas任务在执行， ， < / p >
< div class = "highlight-sh notranslate" > < div class = "highlight" > < pre > < span > < / span > $ < span class = "nb" > jobs< / span >
< span class = "o" > [< / span > < span class = "m" > 10< / span > < span class = "o" > ]< / span > *
Stopped watch com.taobao.container.Test < span class = "nb" > test< / span > < span class = "s2" > " params[0].{? #this.name == null }" < / span > -x < span class = "m" > 2< / span >
execution count : < span class = "m" > 19< / span >
start < span class = "nb" > time< / span > : Fri Sep < span class = "m" > 22< / span > < span class = "m" > 09< / span > :59:55 CST < span class = "m" > 2017< / span >
timeout date : Sat Sep < span class = "m" > 23< / span > < span class = "m" > 09< / span > :59:55 CST < span class = "m" > 2017< / span >
session : 3648e874-5e69-473f-9eed-7f89660b079b < span class = "o" > (< / span > current< span class = "o" > )< / span >
< / pre > < / div >
< / div >
< p > 可以看到目前有一个后台任务在执行。< / p >
< ul class = "simple" >
< li > job id是10, < code class = "docutils literal notranslate" > < span class = "pre" > *< / span > < / code > 表示此job是当前session创建< / li >
< li > 状态是Stopped< / li >
< li > execution count是执行次数， < / li >
< li > timeout date是超时的时间， ， < / li >
< / ul >
< / div >
< div class = "section" id = "" >
< span id = "id2" > < / span > < h2 > 3. 任务暂停和取消< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h2 >
< p > 当任务正在前台执行，比如直接调用命令< code class = "docutils literal notranslate" > < span class = "pre" > trace< / span > < span class = "pre" > Test< / span > < span class = "pre" > t< / span > < / code > 或者调用后台执行命令< code class = "docutils literal notranslate" > < span class = "pre" > trace< / span > < span class = "pre" > Test< / span > < span class = "pre" > t< / span > < span class = "pre" > & < / span > < / code > 后又通过< code class = "docutils literal notranslate" > < span class = "pre" > fg< / span > < / code > 命令将任务转到前台。这时console中无法继续执行命令， ： < / p >
< ul class = "simple" >
< li > ‘ ’ ： < code class = "docutils literal notranslate" > < span class = "pre" > jbos< / span > < / code > 查看任务状态将会变为Stopped， < code class = "docutils literal notranslate" > < span class = "pre" > bg< / span > < span class = "pre" > < job-id> < / span > < / code > 或者< code class = "docutils literal notranslate" > < span class = "pre" > fg< / span > < span class = "pre" > < job-id> < / span > < / code > 可让任务重新开始执行< / li >
< li > ‘ ’ ： < / li >
< li > ‘ ’ ： ， ， < / li >
< / ul >
< / div >
< div class = "section" id = "fgbg" >
< span id = "fgbg" > < / span > < h2 > 4. fg、bg命令， < a class = "headerlink" href = "#fgbg" title = "永久链接至标题" > ¶< / a > < / h2 >
< ul class = "simple" >
< li > 任务在后台执行或者暂停状态（ ‘ ’ ） ， < job-id> 将可以把对应的任务转到前台继续执行。在前台执行时， < / li >
< li > 当任务处于暂停状态时（ ‘ ’ ） ， < job-id> 将可以把对应的任务在后台继续执行< / li >
< li > 非当前session创建的job， < / li >
< / ul >
< / div >
< div class = "section" id = "" >
< span id = "id3" > < / span > < h2 > 5. 任务输出重定向< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h2 >
< p > 可通过< code class = "docutils literal notranslate" > < span class = "pre" > > < / span > < / code > 或者< code class = "docutils literal notranslate" > < span class = "pre" > > > < / span > < / code > 将任务输出结果输出到指定的文件中，可以和< code class = "docutils literal notranslate" > < span class = "pre" > & < / span > < / code > 一起使用， ： < / p >
< div class = "highlight-sh notranslate" > < div class = "highlight" > < pre > < span > < / span > $ trace Test t > > test.out < span class = "p" > & < / span >
< / pre > < / div >
< / div >
< p > 这时trace命令会在后台执行， < / p >
< p > 当远程调用时， ， ： < / p >
< div class = "highlight-sh notranslate" > < div class = "highlight" > < pre > < span > < / span > $ trace Test t > > < span class = "p" > & < / span >
job id : < span class = "m" > 2< / span >
cache location : /Users/gehui/logs/arthas-cache/28198/2
< / pre > < / div >
< / div >
< p > 可以看到并没有指定重定向文件位置， ， ， ， ， < code class = "docutils literal notranslate" > < span class = "pre" > /Users/gehui/logs/arthas-cache/28198/2< / span > < / code > 中， < / p >
< / div >
< div class = "section" id = "" >
< span id = "id4" > < / span > < h2 > 6. 停止命令< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h2 >
< p > 异步执行的命令， ， < job-id> < / p >
< / div >
< div class = "section" id = "" >
< span id = "id5" > < / span > < h2 > 7. 其他< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h2 >
< ul class = "simple" >
< li > 最多同时支持8个命令< / li >
< li > 请勿同时开启过多的后台异步命令， < / li >
< / ul >
< / div >
< / div >
< / div >
< / div >
< footer >
< div class = "rst-footer-buttons" role = "navigation" aria-label = "footer navigation" >
< a href = "save-log.html" class = "btn btn-neutral float-right" title = "执行结果存日志" accesskey = "n" rel = "next" > Next < span class = "fa fa-arrow-circle-right" > < / span > < / a >
< a href = "advanced-use.html" class = "btn btn-neutral" title = "进阶使用" accesskey = "p" rel = "prev" > < span class = "fa fa-arrow-circle-left" > < / span > Previous< / a >
< / div >
< hr / >
< div role = "contentinfo" >
< p >
© Copyright 2018, Alibaba Middleware Group, and contributors.
< / p >
< / div >
Built with < a href = "http://sphinx-doc.org/" > Sphinx< / a > using a < a href = "https://github.com/rtfd/sphinx_rtd_theme" > theme< / a > provided by < a href = "https://readthedocs.org" > Read the Docs< / a > .
< / footer >
< / div >
< / div >
< / section >
< / div >
< script type = "text/javascript" >
var DOCUMENTATION_OPTIONS = {
URL_ROOT:'./',
VERSION:'3.0.1-RC-SNAPSHOT',
LANGUAGE:'zh_CN',
COLLAPSE_INDEX:false,
FILE_SUFFIX:'.html',
HAS_SOURCE: true,
SOURCELINK_SUFFIX: '.txt'
};
< / script >
< script type = "text/javascript" src = "_static/jquery.js" > < / script >
< script type = "text/javascript" src = "_static/underscore.js" > < / script >
< script type = "text/javascript" src = "_static/doctools.js" > < / script >
< script type = "text/javascript" src = "_static/translations.js" > < / script >
< script type = "text/javascript" src = "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML" > < / script >
< script type = "text/javascript" src = "_static/js/theme.js" > < / script >
< script type = "text/javascript" >
jQuery(function () {
SphinxRtdTheme.Navigation.enable(true);
});
< / script >
< div class = "github-fork-ribbon-wrapper right" >
< div class = "github-fork-ribbon" >
< a href = "https://github.com/alibaba/arthas" > Fork me at GitHub< / a >
< / div >
< / div >
< script type = "text/javascript" src = "_static/add_badges.js" > < / script >
< 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 >
< / body >
< / html >
