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* add agent performance analysis * Application performance analysis, supporting the following features. - ThreadDump - DeadLockDetect - JavaFlameGraph - Metrics - JTop - VMFlags - HeapDump - JMapHisto - JHat * No more init performance analysis code inside the femas agent. * Resolving conflicts with develop branches
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@@ -402,4 +402,4 @@ private int findEndpointPort(EndpointSubset s, String serviceId, String primaryP | |
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...ent-core/src/main/java/com/tencent/tsf/femas/agent/classloader/JvmMonitorClassloader.java
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| /** | ||
| * Copyright 2010-2021 the original author or authors | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining | ||
| * a copy of this software and associated documentation files (the | ||
| * "Software"), to deal in the Software without restriction, including | ||
| * without limitation the rights to use, copy, modify, merge, publish, | ||
| * distribute, sublicense, and/or sell copies of the Software, and to | ||
| * permit persons to whom the Software is furnished to do so, subject to | ||
| * the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be | ||
| * included in all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | ||
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | ||
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | ||
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
| */ | ||
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| package com.tencent.tsf.femas.agent.classloader; | ||
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| import com.tencent.tsf.femas.agent.tools.Logger; | ||
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| import java.io.BufferedInputStream; | ||
| import java.io.ByteArrayOutputStream; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.net.URL; | ||
| import java.net.URLClassLoader; | ||
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| public class JvmMonitorClassloader extends URLClassLoader { | ||
| private static final Logger LOGGER = Logger.getLogger(JvmMonitorClassloader.class); | ||
| // only enable at develop phase. | ||
| private static final Boolean DUMP_LOADED_CLASSES = false; | ||
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| public JvmMonitorClassloader(URL[] urls) { | ||
| super(urls); | ||
| } | ||
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| @Override | ||
| protected Class<?> findClass(String name) throws ClassNotFoundException { | ||
| byte[] b = loadClassData(name); | ||
| return defineClass(name, b, 0, b.length); | ||
| } | ||
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| private byte[] loadClassData(String className) { | ||
| if (DUMP_LOADED_CLASSES) { | ||
| LOGGER.debug("load class: " + className.replace(".", "/") + ".class"); | ||
| } | ||
| // read class | ||
| InputStream is = getClass().getClassLoader().getResourceAsStream( | ||
| className.replace(".", "/") + ".class"); | ||
| ByteArrayOutputStream byteSt = new ByteArrayOutputStream(); | ||
| // write into byte | ||
| int len = 0; | ||
| try { | ||
| while ((len = is.read()) != -1) { | ||
| byteSt.write(len); | ||
| } | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| // convert into byte array | ||
| return byteSt.toByteArray(); | ||
| } | ||
| } |
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