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<div class="section" id="stack">
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<span id="stack"></span><h1>stack<a class="headerlink" href="#stack" title="Permalink to this headline">¶</a></h1>
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<p>Print out the full call stack trace containing the current method.</p>
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<p>Most of the time, we know the method being invoked but not always we know <strong>HOW being invoked</strong>; <code class="docutils literal notranslate"><span class="pre">stack</span></code> can be a great help to locate the <em>source</em> for you.</p>
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<div class="section" id="parameters">
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<span id="parameters"></span><h2>Parameters<a class="headerlink" href="#parameters" title="Permalink to this headline">¶</a></h2>
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<table border="1" class="docutils">
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<thead>
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<th align="right">Name</th>
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<th align="left">Specification</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td align="right"><em>class-pattern</em></td>
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<td align="left">pattern for the class name</td>
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</tr>
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<tr>
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<td align="right"><em>method-pattern</em></td>
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<td align="left">pattern for the method name</td>
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</tr>
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<tr>
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<td align="right"><em>condition-expression</em></td>
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<td align="left">condition expression</td>
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</tr>
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<tr>
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<td align="right">[E]</td>
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<td align="left">turn on regex matching while the default is wildcard matching</td>
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</tr>
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<tr>
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<td align="right">[n:]</td>
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<td align="left">calling times</td>
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</tr>
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</tbody>
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</table><p>F.Y.I</p>
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<ol class="simple">
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<li>any valid OGNL expression as <code class="docutils literal notranslate"><span class="pre">"{params,returnObj}"</span></code> supported;</li>
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<li>filter by time cost as <code class="docutils literal notranslate"><span class="pre">trace</span> <span class="pre">*StringUtils</span> <span class="pre">isBlank</span> <span class="pre">'#cost>100'</span></code>; calling stack with only time cost higher than <code class="docutils literal notranslate"><span class="pre">100ms</span></code> will be printed.</li>
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</ol>
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<p>Attention:</p>
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<ol class="simple">
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<li><code class="docutils literal notranslate"><span class="pre">#cost</span></code> can be used in <code class="docutils literal notranslate"><span class="pre">watch/stack/trace</span></code>;</li>
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<li>using <code class="docutils literal notranslate"><span class="pre">#cost</span></code> in Arthas 3.0 instead of <code class="docutils literal notranslate"><span class="pre">$cost</span></code>.</li>
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</ol>
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<p>Advanced:</p>
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<div class="toctree-wrapper compound">
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="advice-class.html">Critical fields in expression</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues/71">Special usage</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://commons.apache.org/proper/commons-ognl/language-guide.html">OGNL official guide</a></li>
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</ul>
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</div>
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</div>
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<div class="section" id="usage">
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<span id="usage"></span><h2>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h2>
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<p>The quoting rules: if there are quotes within the expression, use another type of quotes to quote the whole expression (single <code class="docutils literal notranslate"><span class="pre">''</span></code> or double <code class="docutils literal notranslate"><span class="pre">""</span></code> quotes).</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ stack com.alibaba.sample.petstore.dal.dao.ProductDao getProductById 'params[0]=="K9-BD-01"'
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Press Ctrl+C to abort.
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Affect(class-cnt:1 , method-cnt:1) cost in 51 ms.
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thread_name="http-bio-8080-exec-4" thread_id=0x4a;is_daemon=true;priority=5;
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@com.alibaba.sample.petstore.dal.dao.ibatis.IbatisProductDao.getProductById()
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at com.alibaba.sample.petstore.web.store.module.screen.ItemList.execute(ItemList.java:50)
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at com.alibaba.sample.petstore.web.store.module.screen.ItemList$$FastClassByCGLIB$$40b2f45f.invoke(<generated>:-1)
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at net.sf.cglib.reflect.FastMethod.invoke(FastMethod.java:53)
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at com.alibaba.citrus.service.moduleloader.impl.adapter.MethodInvoker.invoke(MethodInvoker.java:70)
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at com.alibaba.citrus.service.moduleloader.impl.adapter.DataBindingAdapter.executeAndReturn(DataBindingAdapter.java:41)
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at com.alibaba.citrus.turbine.pipeline.valve.PerformScreenValve.performScreenModule(PerformScreenValve.java:111)
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at com.alibaba.citrus.turbine.pipeline.valve.PerformScreenValve.invoke(PerformScreenValve.java:74)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.turbine.pipeline.valve.PerformActionValve.invoke(PerformActionValve.java:73)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invoke(PipelineImpl.java:210)
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......
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thread_name="http-bio-8080-exec-2" thread_id=0x48;is_daemon=true;priority=5;
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@com.alibaba.sample.petstore.dal.dao.ibatis.IbatisProductDao.getProductById()
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at com.alibaba.sample.petstore.web.store.module.screen.ItemList.execute(ItemList.java:50)
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at com.alibaba.sample.petstore.web.store.module.screen.ItemList$$FastClassByCGLIB$$40b2f45f.invoke(<generated>:-1)
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at net.sf.cglib.reflect.FastMethod.invoke(FastMethod.java:53)
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at com.alibaba.citrus.service.moduleloader.impl.adapter.MethodInvoker.invoke(MethodInvoker.java:70)
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at com.alibaba.citrus.service.moduleloader.impl.adapter.DataBindingAdapter.executeAndReturn(DataBindingAdapter.java:41)
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at com.alibaba.citrus.turbine.pipeline.valve.PerformScreenValve.performScreenModule(PerformScreenValve.java:111)
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at com.alibaba.citrus.turbine.pipeline.valve.PerformScreenValve.invoke(PerformScreenValve.java:74)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.turbine.pipeline.valve.PerformActionValve.invoke(PerformActionValve.java:73)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invoke(PipelineImpl.java:210)
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at com.alibaba.citrus.service.pipeline.impl.valve.ChooseValve.invoke(ChooseValve.java:98)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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...
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</pre></div>
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</div>
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<p>Filtering by time cost:</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ stack com.alibaba.sample.petstore.web.store.module.screen.ItemList execute #cost>30
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Press Ctrl+C to abort.
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Affect(class-cnt:1 , method-cnt:1) cost in 123 ms.
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stack com.alibaba.sample.petstore.web.store.module.screen.ItemList execute #cost>30
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thread_name=http-nio-8080-exec-10;id=31;is_daemon=true;priority=5;TCCL=com.taobao.pandora.boot.embedded.tomcat.TomcatEmbeddedWebappClassLoader
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@com.alibaba.sample.petstore.web.store.module.screen.ItemList.execute()
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at com.alibaba.sample.petstore.web.store.module.screen.ItemList$$FastClassByCGLIB$$40b2f45f.invoke(<generated>:-1)
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at net.sf.cglib.reflect.FastMethod.invoke(FastMethod.java:53)
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at com.alibaba.citrus.service.moduleloader.impl.adapter.MethodInvoker.invoke(MethodInvoker.java:70)
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at com.alibaba.citrus.service.moduleloader.impl.adapter.DataBindingAdapter.executeAndReturn(DataBindingAdapter.java:41)
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at com.alibaba.citrus.turbine.pipeline.valve.PerformScreenValve.performScreenModule(PerformScreenValve.java:111)
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at com.alibaba.citrus.turbine.pipeline.valve.PerformScreenValve.invoke(PerformScreenValve.java:74)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.turbine.pipeline.valve.PerformActionValve.invoke(PerformActionValve.java:73)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invoke(PipelineImpl.java:210)
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at com.alibaba.citrus.service.pipeline.impl.valve.ChooseValve.invoke(ChooseValve.java:98)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invoke(PipelineImpl.java:210)
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at com.alibaba.citrus.service.pipeline.impl.valve.LoopValve.invokeBody(LoopValve.java:105)
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at com.alibaba.citrus.service.pipeline.impl.valve.LoopValve.invoke(LoopValve.java:83)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.turbine.pipeline.valve.PageAuthorizationValve.invoke(PageAuthorizationValve.java:105)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.turbine.pipeline.valve.CheckCsrfTokenValve.invoke(CheckCsrfTokenValve.java:123)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.turbine.pipeline.valve.AnalyzeURLValve.invoke(AnalyzeURLValve.java:126)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.turbine.pipeline.valve.SetLoggingContextValve.invoke(SetLoggingContextValve.java:66)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.turbine.pipeline.valve.PrepareForTurbineValve.invoke(PrepareForTurbineValve.java:52)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invokeNext(PipelineImpl.java:157)
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at com.alibaba.citrus.service.pipeline.impl.PipelineImpl$PipelineContextImpl.invoke(PipelineImpl.java:210)
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at com.alibaba.citrus.webx.impl.WebxControllerImpl.service(WebxControllerImpl.java:43)
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at com.alibaba.citrus.webx.impl.WebxRootControllerImpl.handleRequest(WebxRootControllerImpl.java:53)
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at com.alibaba.citrus.webx.support.AbstractWebxRootController.service(AbstractWebxRootController.java:165)
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...
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</pre></div>
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