mirror of https://github.com/alibaba/arthas.git
update doc
hengyunabc
6 years ago
parent
ed31d35e1f
commit
2ff6ec16c6
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classloader
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===========
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Check the inheritance tree, urls and classes loading profiles of the class loaders.
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It can be a great help for `ResourceNotFoundException` when you can use command `classloader`to specify a class loader to `getResources` and print all the urls of the valid resources.
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### Options
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|Name|Specification|
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|---:|:---|
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|[l]|count based on the class loader instance|
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|[t]|print all the inheritance structure of the class loaders|
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|[a]|list all the classes loaded by all the class loaders (use it with great caution since the output can be huge)|
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|`[c:]`|get the hashcode of the class loader|
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|`[c: r:]`|using class loader to search resource|
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### Usage
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* categorised by class loader
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```s
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$ classloader
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name numberOfInstances loadedCountTotal
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com.taobao.pandora.service.loader.ModuleClassLoader 29 11659
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com.taobao.pandora.boot.loader.ReLaunchURLClassLoader 1 5308
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BootstrapClassLoader 1 3711
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com.taobao.arthas.agent.ArthasClassloader 2 2825
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sun.reflect.DelegatingClassLoader 332 332
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java.net.URLClassLoader 1 285
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sun.misc.Launcher$AppClassLoader 1 77
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sun.misc.Launcher$ExtClassLoader 1 46
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com.alibaba.fastjson.util.ASMClassLoader 2 3
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org.jvnet.hk2.internal.DelegatingClassLoader 2 2
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sun.reflect.misc.MethodUtil 1 1
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Affect(row-cnt:11) cost in 66 ms.
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```
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* Categorized by class loader instance
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```sh
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$ classloader -l
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name loadedCount hash parent
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BootstrapClassLoader 3711 null null
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com.alibaba.fastjson.util.ASMClassLoader@3bbaa1b8 2 3bbaa1b8 monitor's ModuleClassLoader
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com.alibaba.fastjson.util.ASMClassLoader@5e255d0b 1 5e255d0b eagleeye-core's ModuleClassLoader
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com.taobao.arthas.agent.ArthasClassloader@4fa2d7e6 1795 4fa2d7e6 sun.misc.Launcher$ExtClassLoader@a38d7a3
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com.taobao.arthas.agent.ArthasClassloader@522400c2 1033 522400c2 sun.misc.Launcher$ExtClassLoader@a38d7a3
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com.taobao.pandora.boot.loader.ReLaunchURLClassLoader@1817d444 5308 1817d444 sun.misc.Launcher$AppClassLoader@14dad5dc
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tbsession's ModuleClassLoader 285 609cd4d8 null
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pandora-qos-service's ModuleClassLoader 267 2f8dad04 null
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pandora-framework's ModuleClassLoader 78 4009e306 null
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filesync-client's ModuleClassLoader 4 4b8ee4de null
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rocketmq-client's ModuleClassLoader 431 247bddad null
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eagleeye-core's ModuleClassLoader 451 1ba9117e null
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alimonitor-jmonitor's ModuleClassLoader 134 22fcf7ab null
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metaq-client's ModuleClassLoader 35 41a2befb null
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hsf-mock's ModuleClassLoader 3 2002fc1d null
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monitor's ModuleClassLoader 1427 131ef10 null
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spas-sdk-service's ModuleClassLoader 7 10d307f1 null
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vipserver-client's ModuleClassLoader 137 7a419da4 null
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metrics's ModuleClassLoader 146 696da30b null
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mtop-uncenter's ModuleClassLoader 922 79d8407f null
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spas-sdk-client's ModuleClassLoader 235 4944252c null
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live-profiler-pandora's ModuleClassLoader 1 6913c1fb null
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notify-tr-client's ModuleClassLoader 472 fba92d3 null
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ons-sdk's ModuleClassLoader 70 23348b5d null
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tair-plugin's ModuleClassLoader 1053 7c9d8e2 null
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tddl-client's ModuleClassLoader 2354 4988d8b8 null
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config-client's ModuleClassLoader 93 429bffaa null
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diamond-client's ModuleClassLoader 360 3d5c822d null
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pandolet's ModuleClassLoader 99 41e1e210 null
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hsf's ModuleClassLoader 1796 3232a28a null
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acl.plugin's ModuleClassLoader 379 67080771 null
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buc.sso.client.plugin's ModuleClassLoader 195 13b6aecc null
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unitrouter's ModuleClassLoader 64 7e5afaa6 null
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switch's ModuleClassLoader 104 24313fcc null
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hsf-notify-client's ModuleClassLoader 57 4d0f2471 null
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java.net.URLClassLoader@7ec7ffd3 285 7ec7ffd3 sun.misc.Launcher$ExtClassLoader@a38d7a3
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javax.management.remote.rmi.NoCallStackClassLoader@53f65459 1 53f65459 null
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javax.management.remote.rmi.NoCallStackClassLoader@2833cc44 1 2833cc44 null
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org.jvnet.hk2.internal.DelegatingClassLoader@72cda8ee 1 72cda8ee monitor's ModuleClassLoader
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org.jvnet.hk2.internal.DelegatingClassLoader@1f57f96d 1 1f57f96d monitor's ModuleClassLoader
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sun.misc.Launcher$AppClassLoader@14dad5dc 77 14dad5dc sun.misc.Launcher$ExtClassLoader@a38d7a3
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sun.misc.Launcher$ExtClassLoader@a38d7a3 46 a38d7a3 null
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sun.reflect.misc.MethodUtil@1201f221 1 1201f221 sun.misc.Launcher$AppClassLoader@14dad5dc
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```
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* Check inheritance tree of the class loaders
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```shell
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$ classloader -t
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+-BootstrapClassLoader
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+-unitrouter's ModuleClassLoader
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+-diamond-client's ModuleClassLoader
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+-sun.misc.Launcher$ExtClassLoader@548a102f
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| +-sun.misc.Launcher$AppClassLoader@14dad5dc
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| +-com.taobao.arthas.agent.AgentLauncher$1@334e6bb8
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| | +-sun.reflect.DelegatingClassLoader@328b3a05
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```
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* Check the real urls of `URLClassLoader`
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```shell
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$ classloader -c 5ffe9775
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file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/commons-lang-2.6.jar
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file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/log4j-1.2.16.jar
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file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/logger.api-0.1.4.jar
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file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/pandora.api-2.0.7-SNAPSHOT.jar
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file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/pandora.container-2.0.7-SNAPSHOT.jar
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file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/pandora.thirdcontainer-2.0.7-SNAPSHOT.jar
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file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/picocontainer-2.14.3.jar
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```
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* Using class loader to search for resource
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```shell
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$ classloader -c 226b143b -r META-INF/MANIFEST.MF
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jar:file:/Users/hello/.m2/repository/javax/enterprise/cdi-api/1.0/cdi-api-1.0.jar!/META-INF/MANIFEST.MF
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jar:file:/Users/hello/.m2/repository/javax/annotation/jsr250-api/1.0/jsr250-api-1.0.jar!/META-INF/MANIFEST.MF
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```
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* Using class loader to look for `*.class` file
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```shell
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$ classloader -c 1b6d3586 -r java/lang/String.class
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jar:file:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/rt.jar!/java/lang/String.class
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```
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@ -0,0 +1,40 @@
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dump
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===
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Dump the bytecode the loaded classes to a specified directory.
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### Options
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|Name|Specification|
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|---:|:---|
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|*class-pattern*|pattern for the class name|
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|`[c:]`|hashcode of the class loader that loaded the class|
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|[E]|turn on regx matching while the default is wildcards matching|
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### Usage
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```shell
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$ dump -E org\.apache\.commons\.lang\.StringUtils
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HASHCODE CLASSLOADER LOCATION
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29505d69 +-tddl-client's ModuleClassLoader /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/com.taobao.pandora
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.service.loader.ModuleClassLoader-29505d69/org.apache.commons.lang.StringUtils.class
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6e51ad67 +-java.net.URLClassLoader@6e51ad67 /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/java.net.URLClassL
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+-sun.misc.Launcher$AppClassLoader@6951a712 oader-6e51ad67/org.apache.commons.lang.StringUtils.class
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+-sun.misc.Launcher$ExtClassLoader@6fafc4c2
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2bdd9114 +-pandora-qos-service's ModuleClassLoader /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/com.taobao.pandora
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.service.loader.ModuleClassLoader-2bdd9114/org.apache.commons.lang.StringUtils.class
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544dc9ba +-com.taobao.tomcat.container.context.loader.AliWebappClassLoader /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/com.taobao.tomcat.
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+-org.apache.catalina.loader.StandardClassLoader@2302e984 container.context.loader.AliWebappClassLoader-544dc9ba/org.apache.commons.lang.String
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+-sun.misc.Launcher$AppClassLoader@6951a712 Utils.class
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+-sun.misc.Launcher$ExtClassLoader@6fafc4c2
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22880c2b +-java.net.URLClassLoader@22880c2b /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/java.net.URLClassL
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+-sun.misc.Launcher$AppClassLoader@6951a712 oader-22880c2b/org.apache.commons.lang.StringUtils.class
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+-sun.misc.Launcher$ExtClassLoader@6fafc4c2
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Affect(row-cnt:5) cost in 156 ms.
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$ dump -E org\.apache\.commons\.lang\.StringUtils -c 22880c2b
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HASHCODE CLASSLOADER LOCATION
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22880c2b +-java.net.URLClassLoader@22880c2b /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/java.net.URLClassLoader-22880c2b/org
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+-sun.misc.Launcher$AppClassLoader@6951a712 .apache.commons.lang.StringUtils.class
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+-sun.misc.Launcher$ExtClassLoader@6fafc4c2
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Affect(row-cnt:1) cost in 67 ms.
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```
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@ -0,0 +1,24 @@
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getstatic
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=========
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Check the static fields of classes conveniently as `getstatic class_name field_name`
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Tip: if the *field* is a composite object, you can even use [`OGNL`](https://en.wikipedia.org/wiki/OGNL) to traverse, filter and access the internal properties of it.
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E.g. suppose `n` is a `Map` and the key is a `Enum` then if you want to get the key with a specific `Enum` value - `STOP` or `a`, you can achieve it as:
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```
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$ getstatic com.alibaba.arthas.Test n 'entrySet().iterator.{? #this.key.name()=="STOP"}'
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field: n
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@ArrayList[
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@Node[STOP=bbb],
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]
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Affect(row-cnt:1) cost in 68 ms.
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$ getstatic com.alibaba.arthas.Test m 'entrySet().iterator.{? #this.key=="a"}'
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field: m
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@ArrayList[
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@Node[a=aaa],
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]
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```
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@ -0,0 +1,158 @@
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jad
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===
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De-compile specified loaded classes.
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`jad` helps to *de-compile* the byte code in JVM to the source code to assist you to better understand the logic behind.
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F.Y.I
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* the de-compiled code will be grammatically highlighted for readability in Arthas Console;
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* you have to understand there might be some trivial grammar errors but it won't affect the logic understanding.
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### Options
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|Name|Specification|
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|---:|:---|
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|*class-pattern*|pattern for the class name|
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|`[c:]`|hashcode of the class loader that loaded the class|
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|[E]|turn on regx matching while the default is wildcards matching|
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### Usage
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When several class loaders loaded the same class:
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1. `jad` to get the hashcode of the class loader;
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2. `jad -c <hashcode>` to get the de-compiled class loaded by the class loader.
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```java
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$ jad org.apache.log4j.Logger
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Found more than one class for: org.apache.log4j.Logger, Please use jad -c hashcode org.apache.log4j.Logger
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HASHCODE CLASSLOADER
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69dcaba4 +-monitor's ModuleClassLoader
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6e51ad67 +-java.net.URLClassLoader@6e51ad67
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+-sun.misc.Launcher$AppClassLoader@6951a712
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+-sun.misc.Launcher$ExtClassLoader@6fafc4c2
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2bdd9114 +-pandora-qos-service's ModuleClassLoader
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4c0df5f8 +-pandora-framework's ModuleClassLoader
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Affect(row-cnt:0) cost in 38 ms.
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$ jad org.apache.log4j.Logger -c 69dcaba4
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ClassLoader:
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+-monitor's ModuleClassLoader
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Location:
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/Users/zhuyong/Downloads/taobao-hsf.sar/plugins/monitor/lib/log4j-1.2.14.jar
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package org.apache.log4j;
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import org.apache.log4j.spi.*;
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public class Logger extends Category
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{
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private static final String FQCN;
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protected Logger(String name)
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{
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super(name);
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}
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public static Logger getLogger(String name)
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{
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return LogManager.getLogger(name);
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}
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public static Logger getLogger(Class clazz)
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{
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return LogManager.getLogger(clazz.getName());
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}
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public static Logger getRootLogger()
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{
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return LogManager.getRootLogger();
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}
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public static Logger getLogger(String name, LoggerFactory factory)
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{
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return LogManager.getLogger(name, factory);
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}
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public void trace(Object message)
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{
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if (repository.isDisabled(5000))
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{
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return;
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}
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if (Level.TRACE.isGreaterOrEqual(getEffectiveLevel()))
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{
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forcedLog(Logger.FQCN, Level.TRACE, message, null);
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}
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}
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public void trace(Object message, Throwable t)
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{
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if (repository.isDisabled(5000))
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{
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return;
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}
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if (Level.TRACE.isGreaterOrEqual(getEffectiveLevel()))
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{
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forcedLog(Logger.FQCN, Level.TRACE, message, t);
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}
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}
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public boolean isTraceEnabled()
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{
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if (repository.isDisabled(5000))
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{
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return false;
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}
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return Level.TRACE.isGreaterOrEqual(getEffectiveLevel());
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}
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static
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{
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Logger.FQCN = Logger.class.getName();
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}
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}
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Affect(row-cnt:1) cost in 190 ms.
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```
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||||||
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De-compile the specified method:
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||||||
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```sh
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$ jad com.taobao.container.web.arthas.rest.MetricsController directMetrics
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ClassLoader:
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+-com.taobao.pandora.boot.loader.ReLaunchURLClassLoader@1817d444
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||||||
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+-sun.misc.Launcher$AppClassLoader@14dad5dc
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||||||
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+-sun.misc.Launcher$ExtClassLoader@a38d7a3
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||||||
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||||||
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Location:
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/Users/zhuyong/middleware/tomcat-web/tomcat-web-web/target/classes/
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||||||
|
|
||||||
|
private Map<String, Object> directMetrics(String ip, String[] metrics) {
|
||||||
|
JSONObject obj;
|
||||||
|
HashMap<String, Object> result = new HashMap<String, Object>();
|
||||||
|
result.put("success", false);
|
||||||
|
String metricUrl = "http://" + ip + ":8006/metrics/specific";
|
||||||
|
String postBody = Arrays.stream(metrics).map(metric -> "metric=" + metric).collect(Collectors.joining("&"));
|
||||||
|
HttpClientUtils.Response resp = HttpClientUtils.sendPostRequest((String)metricUrl, (String)postBody);
|
||||||
|
if (resp.isSuccess() && (obj = JSON.parseObject(resp.getContent())).containsKey("success") && obj.getBoolean("success").booleanValue() && obj.containsKey("data")) {
|
||||||
|
JSONArray dataArray = obj.getJSONArray("data");
|
||||||
|
HashMap<String, Object> metricMap = new HashMap<String, Object>();
|
||||||
|
for (Object aDataArray : dataArray) {
|
||||||
|
JSONObject o = (JSONObject)aDataArray;
|
||||||
|
metricMap.put(o.getString("metric"), o.get("value"));
|
||||||
|
}
|
||||||
|
result.put("data", metricMap);
|
||||||
|
result.put("success", true);
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
Affect(row-cnt:1) cost in 1508 ms.
|
||||||
|
```
|
||||||
@ -0,0 +1,97 @@
|
|||||||
|
jvm
|
||||||
|
===
|
||||||
|
|
||||||
|
Check the JVM profile
|
||||||
|
|
||||||
|
### Usage
|
||||||
|
|
||||||
|
```
|
||||||
|
$ jvm
|
||||||
|
CATEGORY INFO
|
||||||
|
------------------------------------------------------------------------------------------------------------------------------------
|
||||||
|
|
||||||
|
RUNTIME MACHINE-NAME hellodeMacBook-Air.local
|
||||||
|
JVM-START-TIME 2015-12-23 10:54:18
|
||||||
|
MANAGEMENT-SPEC-VERSION 1.2
|
||||||
|
SPEC-NAME Java Virtual Machine Specification
|
||||||
|
SPEC-VENDOR Oracle Corporation
|
||||||
|
SPEC-VERSION 1.8
|
||||||
|
VM-NAME Java HotSpot(TM) 64-Bit Server VM
|
||||||
|
VM-VENDOR Oracle Corporation
|
||||||
|
VM-VERSION 25.60-b23
|
||||||
|
INPUT-ARGUMENTS -Xbootclasspath/a:/Users/hello/.jenv/versions/1.8/lib/tools.jar
|
||||||
|
-Djava.util.logging.config.file=/Users/hello/code/java/crash/packaging/target/
|
||||||
|
conf/logging.properties
|
||||||
|
|
||||||
|
CLASS-PATH /Users/hello/.jenv/versions/1.8/lib/tools.jar:/Users/hello/code/java/cras
|
||||||
|
h/packaging/target/bin/crash.cli-1.3.2-SNAPSHOT.jar::/Users/hello/code/java/cr
|
||||||
|
ash/packaging/target/lib/bcpkix-jdk15on-1.51.jar:/Users/hello/code/java/crash/
|
||||||
|
packaging/target/lib/bcprov-jdk15on-1.51.jar:/Users/hello/code/java/crash/pack
|
||||||
|
aging/target/lib/crash.connectors.ssh-1.3.2-SNAPSHOT-standalone.jar:/Users/hengyuna
|
||||||
|
bc/code/java/crash/packaging/target/lib/crash.connectors.telnet-1.3.2-SNAPSHOT-stan
|
||||||
|
dalone.jar:/Users/hello/code/java/crash/packaging/target/lib/crash.shell-1.3.2
|
||||||
|
-SNAPSHOT.jar:/Users/hello/code/java/crash/packaging/target/lib/groovy-all-1.8
|
||||||
|
.9.jar:/Users/hello/code/java/crash/packaging/target/lib/ivy-2.2.0.jar
|
||||||
|
BOOT-CLASS-PATH /Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/resources.j
|
||||||
|
ar:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/rt.jar:/
|
||||||
|
Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/sunrsasign.j
|
||||||
|
ar:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jsse.jar
|
||||||
|
:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jce.jar:/L
|
||||||
|
ibrary/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/charsets.jar:
|
||||||
|
/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jfr.jar:/Li
|
||||||
|
brary/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/classes:/Users/hen
|
||||||
|
gyunabc/.jenv/versions/1.8/lib/tools.jar
|
||||||
|
LIBRARY-PATH /Users/hello/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library
|
||||||
|
/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.
|
||||||
|
|
||||||
|
CLASS-LOADING LOADED-CLASS-COUNT 4264
|
||||||
|
TOTAL-LOADED-CLASS-COUNT 4264
|
||||||
|
UNLOADED-CLASS-COUNT 0
|
||||||
|
IS-VERBOSE false
|
||||||
|
|
||||||
|
COMPILATION NAME HotSpot 64-Bit Tiered Compilers
|
||||||
|
TOTAL-COMPILE-TIME 5145(ms)
|
||||||
|
|
||||||
|
GARBAGE-COLLECTORS PS Scavenge 6/74(ms)
|
||||||
|
[count/time]
|
||||||
|
PS MarkSweep 1/64(ms)
|
||||||
|
[count/time]
|
||||||
|
|
||||||
|
MEMORY-MANAGERS CodeCacheManager Code Cache
|
||||||
|
|
||||||
|
Metaspace Manager Metaspace
|
||||||
|
Compressed Class Space
|
||||||
|
|
||||||
|
PS Scavenge PS Eden Space
|
||||||
|
PS Survivor Space
|
||||||
|
|
||||||
|
PS MarkSweep PS Eden Space
|
||||||
|
PS Survivor Space
|
||||||
|
PS Old Gen
|
||||||
|
|
||||||
|
|
||||||
|
MEMORY HEAP-MEMORY-USAGE 186646528/134217728/1908932608/31245568
|
||||||
|
[committed/init/max/used]
|
||||||
|
NO-HEAP-MEMORY-USAGE 35520512/2555904/-1/34584616
|
||||||
|
[committed/init/max/used]
|
||||||
|
PENDING-FINALIZE-COUNT 0
|
||||||
|
|
||||||
|
OPERATING-SYSTEM OS Mac OS X
|
||||||
|
ARCH x86_64
|
||||||
|
PROCESSORS-COUNT 4
|
||||||
|
LOAD-AVERAGE 2.328125
|
||||||
|
VERSION 10.10.5
|
||||||
|
|
||||||
|
THREAD COUNT 16
|
||||||
|
DAEMON-COUNT 10
|
||||||
|
LIVE-COUNT 18
|
||||||
|
STARTED-COUNT 19
|
||||||
|
Affect cost in 2 ms.
|
||||||
|
```
|
||||||
|
|
||||||
|
### thread-related
|
||||||
|
|
||||||
|
* COUNT: the count of active threads
|
||||||
|
* DAEMON-COUNT: the count of active daemon threads
|
||||||
|
* LIVE-COUNT: the maximum count of the live threads since JVM starts
|
||||||
|
* STARTED-COUNT: the total count of the created threads since JVM starts
|
||||||
@ -0,0 +1,68 @@
|
|||||||
|
sc
|
||||||
|
==
|
||||||
|
|
||||||
|
Check the profiles of the loaded classes.
|
||||||
|
|
||||||
|
Abbreviated from “Search-Class”; with the help of this command, you can search out all the loaded classes in JVM. Supported options are: `[d]`、`[E]`、`[f]` and `[x:]`.
|
||||||
|
|
||||||
|
Options
|
||||||
|
-------
|
||||||
|
|
||||||
|
### Specification
|
||||||
|
|
||||||
|
|Name|Specification|
|
||||||
|
|---:|:---|
|
||||||
|
|*class-pattern*|pattern for the class name|
|
||||||
|
|*method-pattern*|pattern for the method name|
|
||||||
|
|[d]|print the details of the current class including the source file, class declaration, the class loaders and the like.<br/>F.Y.I if a class is loaded by several class loaders, then the class will be printed several times|
|
||||||
|
|[E]|turn on regx matching while the default is wildcards matching|
|
||||||
|
|[f]|print the fields info of the current class, which should be used along with `-d`|
|
||||||
|
|[x:]|the depth to print the static fields, whose default is `0` - directly invoke the `toString()`|
|
||||||
|
|
||||||
|
Tip:
|
||||||
|
1. *class-patten* supports full qualified class name (e.g. com.taobao.test.AAA and com/taobao/test/AAA)
|
||||||
|
2. `sc` turned on the `sub-class` matching in default mode, if you do want to hide the `sub-class` please just turn it off via `options disable-sub-class true`.
|
||||||
|
|
||||||
|
### Usage
|
||||||
|
|
||||||
|
Check the static fields of a class using `sc -df class-name`
|
||||||
|
|
||||||
|
```shell
|
||||||
|
$ sc -df org.apache.commons.lang.StringUtils
|
||||||
|
|
||||||
|
class-info org.apache.commons.lang.StringUtils
|
||||||
|
code-source /Users/zhuyong/middleware/citrus-sample/petstore/web/target/petstore/WEB-INF/lib/commons-lang-2.4.jar
|
||||||
|
name org.apache.commons.lang.StringUtils
|
||||||
|
isInterface false
|
||||||
|
isAnnotation false
|
||||||
|
isEnum false
|
||||||
|
isAnonymousClass false
|
||||||
|
isArray false
|
||||||
|
isLocalClass false
|
||||||
|
isMemberClass false
|
||||||
|
isPrimitive false
|
||||||
|
isSynthetic false
|
||||||
|
simple-name StringUtils
|
||||||
|
modifier public
|
||||||
|
annotation
|
||||||
|
interfaces
|
||||||
|
super-class +-java.lang.Object
|
||||||
|
class-loader +-com.taobao.tomcat.container.context.loader.AliWebappClassLoader
|
||||||
|
+-org.apache.catalina.loader.StandardClassLoader@1d44eef3
|
||||||
|
+-sun.misc.Launcher$AppClassLoader@57a462c9
|
||||||
|
+-sun.misc.Launcher$ExtClassLoader@6951a712
|
||||||
|
fields modifier final,public,static
|
||||||
|
type java.lang.String
|
||||||
|
name EMPTY
|
||||||
|
value
|
||||||
|
|
||||||
|
modifier final,public,static
|
||||||
|
type int
|
||||||
|
name INDEX_NOT_FOUND
|
||||||
|
value -1
|
||||||
|
|
||||||
|
modifier final,private,static
|
||||||
|
type int
|
||||||
|
name PAD_LIMIT
|
||||||
|
value 8192
|
||||||
|
```
|
||||||
@ -0,0 +1,89 @@
|
|||||||
|
sm
|
||||||
|
==
|
||||||
|
|
||||||
|
Check the method profile of the loaded classes;
|
||||||
|
|
||||||
|
Abbreviated from “Search-Method”, with which you can search out all methods profiles of the loaded classes.
|
||||||
|
|
||||||
|
F.Y.I
|
||||||
|
`sm` only shows the methods declared in the current class; methods declared in ancestors will not be presented.
|
||||||
|
|
||||||
|
### Options
|
||||||
|
|
||||||
|
|Name|Specification|
|
||||||
|
|---:|:---|
|
||||||
|
|*class-pattern*|pattern for class name|
|
||||||
|
|*method-pattern*|pattern for method name|
|
||||||
|
|[d]|print the details of the method|
|
||||||
|
|[E]|turn the regex matching on while the default mode is wildcards matching|
|
||||||
|
|
||||||
|
### Usage
|
||||||
|
|
||||||
|
```
|
||||||
|
$ sm org.apache.catalina.connector.Connector
|
||||||
|
org.apache.catalina.connector.Connector-><init>
|
||||||
|
org.apache.catalina.connector.Connector->setProperty
|
||||||
|
org.apache.catalina.connector.Connector->getProperty
|
||||||
|
org.apache.catalina.connector.Connector->toString
|
||||||
|
org.apache.catalina.connector.Connector->resume
|
||||||
|
org.apache.catalina.connector.Connector->getScheme
|
||||||
|
org.apache.catalina.connector.Connector->getProtocol
|
||||||
|
org.apache.catalina.connector.Connector->getPort
|
||||||
|
org.apache.catalina.connector.Connector->setService
|
||||||
|
org.apache.catalina.connector.Connector->setPort
|
||||||
|
org.apache.catalina.connector.Connector->getService
|
||||||
|
org.apache.catalina.connector.Connector->getAttribute
|
||||||
|
org.apache.catalina.connector.Connector->setAttribute
|
||||||
|
org.apache.catalina.connector.Connector->getLocalPort
|
||||||
|
org.apache.catalina.connector.Connector->pause
|
||||||
|
org.apache.catalina.connector.Connector->setProtocol
|
||||||
|
org.apache.catalina.connector.Connector->initInternal
|
||||||
|
org.apache.catalina.connector.Connector->setSecure
|
||||||
|
org.apache.catalina.connector.Connector->getSecure
|
||||||
|
org.apache.catalina.connector.Connector->startInternal
|
||||||
|
org.apache.catalina.connector.Connector->stopInternal
|
||||||
|
org.apache.catalina.connector.Connector->setScheme
|
||||||
|
org.apache.catalina.connector.Connector->createRequest
|
||||||
|
org.apache.catalina.connector.Connector->getDomainInternal
|
||||||
|
org.apache.catalina.connector.Connector->getProtocolHandler
|
||||||
|
org.apache.catalina.connector.Connector->setURIEncoding
|
||||||
|
org.apache.catalina.connector.Connector->findSslHostConfigs
|
||||||
|
org.apache.catalina.connector.Connector->destroyInternal
|
||||||
|
org.apache.catalina.connector.Connector->getObjectNameKeyProperties
|
||||||
|
org.apache.catalina.connector.Connector->getAllowTrace
|
||||||
|
org.apache.catalina.connector.Connector->setAllowTrace
|
||||||
|
org.apache.catalina.connector.Connector->getAsyncTimeout
|
||||||
|
org.apache.catalina.connector.Connector->setAsyncTimeout
|
||||||
|
org.apache.catalina.connector.Connector->getEnableLookups
|
||||||
|
org.apache.catalina.connector.Connector->setEnableLookups
|
||||||
|
org.apache.catalina.connector.Connector->getMaxCookieCount
|
||||||
|
...
|
||||||
|
|
||||||
|
```
|
||||||
|
|
||||||
|
```sh
|
||||||
|
$ sm org.apache.catalina.connector.Connector -d
|
||||||
|
declaring-class org.apache.catalina.connector.Connector
|
||||||
|
constructor-name <init>
|
||||||
|
modifier public
|
||||||
|
annotation
|
||||||
|
parameters
|
||||||
|
exceptions
|
||||||
|
|
||||||
|
declaring-class org.apache.catalina.connector.Connector
|
||||||
|
constructor-name <init>
|
||||||
|
modifier public
|
||||||
|
annotation
|
||||||
|
parameters java.lang.String
|
||||||
|
exceptions
|
||||||
|
|
||||||
|
declaring-class org.apache.catalina.connector.Connector
|
||||||
|
method-name setProperty
|
||||||
|
modifier public
|
||||||
|
annotation
|
||||||
|
parameters java.lang.String
|
||||||
|
java.lang.String
|
||||||
|
return boolean
|
||||||
|
exceptions
|
||||||
|
......
|
||||||
|
```
|
||||||
@ -0,0 +1,122 @@
|
|||||||
|
sysprop
|
||||||
|
=======
|
||||||
|
|
||||||
|
Check the JVM system properties.
|
||||||
|
|
||||||
|
### Usage
|
||||||
|
|
||||||
|
```
|
||||||
|
USAGE:
|
||||||
|
sysprop [-h] [property-name] [property-value]
|
||||||
|
|
||||||
|
SUMMARY:
|
||||||
|
Display, and change all the system properties.
|
||||||
|
|
||||||
|
EXAMPLES:
|
||||||
|
sysprop
|
||||||
|
sysprop file.encoding
|
||||||
|
sysprop production.mode true
|
||||||
|
|
||||||
|
WIKI:
|
||||||
|
https://alibaba.github.io/arthas/sysprop
|
||||||
|
|
||||||
|
OPTIONS:
|
||||||
|
-h, --help this help
|
||||||
|
<property-name> property name
|
||||||
|
<property-value> property value
|
||||||
|
```
|
||||||
|
|
||||||
|
#### Check all properties
|
||||||
|
|
||||||
|
|
||||||
|
```
|
||||||
|
$ sysprop
|
||||||
|
KEY VALUE
|
||||||
|
-------------------------------------------------------------------------------------------------------------------------------------
|
||||||
|
java.runtime.name Java(TM) SE Runtime Environment
|
||||||
|
sun.boot.library.path /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib
|
||||||
|
java.vm.version 25.51-b03
|
||||||
|
user.country.format CN
|
||||||
|
gopherProxySet false
|
||||||
|
java.vm.vendor Oracle Corporation
|
||||||
|
java.vendor.url http://java.oracle.com/
|
||||||
|
path.separator :
|
||||||
|
java.vm.name Java HotSpot(TM) 64-Bit Server VM
|
||||||
|
file.encoding.pkg sun.io
|
||||||
|
user.country US
|
||||||
|
sun.java.launcher SUN_STANDARD
|
||||||
|
sun.os.patch.level unknown
|
||||||
|
java.vm.specification.name Java Virtual Machine Specification
|
||||||
|
user.dir /private/var/tmp
|
||||||
|
java.runtime.version 1.8.0_51-b16
|
||||||
|
java.awt.graphicsenv sun.awt.CGraphicsEnvironment
|
||||||
|
java.endorsed.dirs /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib/endors
|
||||||
|
ed
|
||||||
|
os.arch x86_64
|
||||||
|
java.io.tmpdir /var/folders/2c/tbxwzs4s4sbcvh7frbcc7n000000gn/T/
|
||||||
|
line.separator
|
||||||
|
|
||||||
|
java.vm.specification.vendor Oracle Corporation
|
||||||
|
os.name Mac OS X
|
||||||
|
sun.jnu.encoding UTF-8
|
||||||
|
java.library.path /Users/wangtao/Library/Java/Extensions:/Library/Java/Extensions:/Network/Libra
|
||||||
|
ry/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.
|
||||||
|
sun.nio.ch.bugLevel
|
||||||
|
java.specification.name Java Platform API Specification
|
||||||
|
java.class.version 52.0
|
||||||
|
sun.management.compiler HotSpot 64-Bit Tiered Compilers
|
||||||
|
os.version 10.12.6
|
||||||
|
user.home /Users/wangtao
|
||||||
|
user.timezone Asia/Shanghai
|
||||||
|
java.awt.printerjob sun.lwawt.macosx.CPrinterJob
|
||||||
|
file.encoding UTF-8
|
||||||
|
java.specification.version 1.8
|
||||||
|
user.name wangtao
|
||||||
|
java.class.path .
|
||||||
|
java.vm.specification.version 1.8
|
||||||
|
sun.arch.data.model 64
|
||||||
|
java.home /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre
|
||||||
|
sun.java.command Test
|
||||||
|
java.specification.vendor Oracle Corporation
|
||||||
|
user.language en
|
||||||
|
awt.toolkit sun.lwawt.macosx.LWCToolkit
|
||||||
|
java.vm.info mixed mode
|
||||||
|
java.version 1.8.0_51
|
||||||
|
java.ext.dirs /Users/wangtao/Library/Java/Extensions:/Library/Java/JavaVirtualMachines/jdk1.
|
||||||
|
8.0_51.jdk/Contents/Home/jre/lib/ext:/Library/Java/Extensions:/Network/Library
|
||||||
|
/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java
|
||||||
|
sun.boot.class.path /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib/resour
|
||||||
|
ces.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/li
|
||||||
|
b/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/l
|
||||||
|
ib/sunrsasign.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/H
|
||||||
|
ome/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Content
|
||||||
|
s/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Conte
|
||||||
|
nts/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jd
|
||||||
|
k/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.
|
||||||
|
jdk/Contents/Home/jre/classes
|
||||||
|
java.vendor Oracle Corporation
|
||||||
|
file.separator /
|
||||||
|
java.vendor.url.bug http://bugreport.sun.com/bugreport/
|
||||||
|
sun.cpu.endian little
|
||||||
|
sun.io.unicode.encoding UnicodeBig
|
||||||
|
sun.cpu.isalist
|
||||||
|
```
|
||||||
|
|
||||||
|
#### Check a single property
|
||||||
|
|
||||||
|
Tip: `tab` auto-completion supported
|
||||||
|
|
||||||
|
```
|
||||||
|
$ sysprop java.version
|
||||||
|
java.version=1.8.0_51
|
||||||
|
```
|
||||||
|
|
||||||
|
#### Modify a single property
|
||||||
|
|
||||||
|
```
|
||||||
|
$ sysprop user.country
|
||||||
|
user.country=US
|
||||||
|
$ sysprop user.country CN
|
||||||
|
Successfully changed the system property.
|
||||||
|
user.country=CN
|
||||||
|
```
|
||||||
@ -0,0 +1,166 @@
|
|||||||
|
thread
|
||||||
|
======
|
||||||
|
|
||||||
|
Check the basic profile and stack trace of the threads.
|
||||||
|
|
||||||
|
### Parameters
|
||||||
|
|
||||||
|
|Name|Specification|
|
||||||
|
|---:|:---|
|
||||||
|
|*id*|thread id in JVM|
|
||||||
|
|[n:]|the top n busiest with stack traces|
|
||||||
|
|[b]|locate the threads blocking others|
|
||||||
|
|[i `<value>`]|specify the interval to collect data to compute CPU ratios (ms)|
|
||||||
|
|
||||||
|
How to get the CPU ratios?
|
||||||
|
|
||||||
|
> Within an *specified* interval, the time cost by the thread compared to the total CPU time.
|
||||||
|
> Take a sample (using `java.lang.management.ThreadMXBean#getThreadCpuTime`) to get the CPU time cost for all the threads and after a *specified* interval (default *100 ms*, which can be specified by `-i`), take another sample and we have the CPU time cost and the ratios naturally.
|
||||||
|
|
||||||
|
> Attention: this kind of operation will take time, to decrease the extra cost, you'd better expand the interval to like `5000 ms` for less performance overhead.
|
||||||
|
|
||||||
|
F.Y.I
|
||||||
|
|
||||||
|
If you'd like to check the CPU ratios from the very start of the Java process, [show-busy-java-threads](https://github.com/oldratlee/useful-scripts/blob/master/docs/java.md#-show-busy-java-threads) can be a help.
|
||||||
|
|
||||||
|
### Usage
|
||||||
|
|
||||||
|
#### List the top n busiest with detailed stack trace
|
||||||
|
|
||||||
|
```shell
|
||||||
|
$ thread -n 3
|
||||||
|
"as-command-execute-daemon" Id=29 cpuUsage=75% RUNNABLE
|
||||||
|
at sun.management.ThreadImpl.dumpThreads0(Native Method)
|
||||||
|
at sun.management.ThreadImpl.getThreadInfo(ThreadImpl.java:440)
|
||||||
|
at com.taobao.arthas.core.command.monitor200.ThreadCommand$1.action(ThreadCommand.java:58)
|
||||||
|
at com.taobao.arthas.core.command.handler.AbstractCommandHandler.execute(AbstractCommandHandler.java:238)
|
||||||
|
at com.taobao.arthas.core.command.handler.DefaultCommandHandler.handleCommand(DefaultCommandHandler.java:67)
|
||||||
|
at com.taobao.arthas.core.server.ArthasServer$4.run(ArthasServer.java:276)
|
||||||
|
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
|
||||||
|
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
|
||||||
|
at java.lang.Thread.run(Thread.java:745)
|
||||||
|
|
||||||
|
Number of locked synchronizers = 1
|
||||||
|
- java.util.concurrent.ThreadPoolExecutor$Worker@6cd0b6f8
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
"as-session-expire-daemon" Id=25 cpuUsage=24% TIMED_WAITING
|
||||||
|
at java.lang.Thread.sleep(Native Method)
|
||||||
|
at com.taobao.arthas.core.server.DefaultSessionManager$2.run(DefaultSessionManager.java:85)
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
"Reference Handler" Id=2 cpuUsage=0% WAITING on java.lang.ref.Reference$Lock@69ba0f27
|
||||||
|
at java.lang.Object.wait(Native Method)
|
||||||
|
- waiting on java.lang.ref.Reference$Lock@69ba0f27
|
||||||
|
at java.lang.Object.wait(Object.java:503)
|
||||||
|
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)
|
||||||
|
```
|
||||||
|
|
||||||
|
#### List all info when no options provided
|
||||||
|
|
||||||
|
```shell
|
||||||
|
$ thread
|
||||||
|
Threads Total: 16, NEW: 0, RUNNABLE: 7, BLOCKED: 0, WAITING: 5, TIMED_WAITING: 4, TERMINATED: 0
|
||||||
|
ID NAME GROUP PRIORITY STATE %CPU TIME INTERRUPTE DAEMON
|
||||||
|
30 as-command-execute-daemon system 9 RUNNABLE 72 0:0 false true
|
||||||
|
23 as-session-expire-daemon system 9 TIMED_WAIT 27 0:0 false true
|
||||||
|
22 Attach Listener system 9 RUNNABLE 0 0:0 false true
|
||||||
|
11 pool-2-thread-1 main 5 TIMED_WAIT 0 0:0 false false
|
||||||
|
12 Thread-2 main 5 RUNNABLE 0 0:0 false true
|
||||||
|
13 pool-3-thread-1 main 5 TIMED_WAIT 0 0:0 false false
|
||||||
|
25 as-selector-daemon system 9 RUNNABLE 0 0:0 false true
|
||||||
|
14 Thread-3 main 5 TIMED_WAIT 0 0:0 false false
|
||||||
|
26 pool-5-thread-1 system 5 WAITING 0 0:0 false false
|
||||||
|
15 Thread-4 main 5 RUNNABLE 0 0:0 false false
|
||||||
|
1 main main 5 WAITING 0 0:2 false false
|
||||||
|
2 Reference Handler system 10 WAITING 0 0:0 false true
|
||||||
|
3 Finalizer system 8 WAITING 0 0:0 false true
|
||||||
|
4 Signal Dispatcher system 9 RUNNABLE 0 0:0 false true
|
||||||
|
20 NonBlockingInputStreamThread main 5 WAITING 0 0:0 false true
|
||||||
|
21 Thread-8 main 5 RUNNABLE 0 0:0 false true
|
||||||
|
```
|
||||||
|
|
||||||
|
#### thread <thread_id> present the specified thread profile
|
||||||
|
|
||||||
|
```shell
|
||||||
|
$ thread 1
|
||||||
|
"main" Id=1 WAITING on java.util.concurrent.CountDownLatch$Sync@29fafb28
|
||||||
|
at sun.misc.Unsafe.park(Native Method)
|
||||||
|
- waiting on java.util.concurrent.CountDownLatch$Sync@29fafb28
|
||||||
|
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
|
||||||
|
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
|
||||||
|
at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:997)
|
||||||
|
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1304)
|
||||||
|
at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:231)
|
||||||
|
```
|
||||||
|
|
||||||
|
#### thread -b locate the blocking threads
|
||||||
|
|
||||||
|
Using `-b`, we can effectively locate the threads holding locks blocking other threads resulting in a frozen system.
|
||||||
|
|
||||||
|
```sh
|
||||||
|
$ thread -b
|
||||||
|
"http-bio-8080-exec-4" Id=27 TIMED_WAITING
|
||||||
|
at java.lang.Thread.sleep(Native Method)
|
||||||
|
at test.arthas.TestThreadBlocking.doGet(TestThreadBlocking.java:22)
|
||||||
|
- locked java.lang.Object@725be470 <---- but blocks 4 other threads!
|
||||||
|
at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
|
||||||
|
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
|
||||||
|
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
|
||||||
|
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
|
||||||
|
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
|
||||||
|
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
|
||||||
|
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
|
||||||
|
at test.filter.TestDurexFilter.doFilter(TestDurexFilter.java:46)
|
||||||
|
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
|
||||||
|
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
|
||||||
|
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
|
||||||
|
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
|
||||||
|
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
|
||||||
|
at com.taobao.tomcat.valves.ContextLoadFilterValve$FilterChainAdapter.doFilter(ContextLoadFilterValve.java:191)
|
||||||
|
at com.taobao.eagleeye.EagleEyeFilter.doFilter(EagleEyeFilter.java:81)
|
||||||
|
at com.taobao.tomcat.valves.ContextLoadFilterValve.invoke(ContextLoadFilterValve.java:150)
|
||||||
|
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
|
||||||
|
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
|
||||||
|
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
|
||||||
|
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:429)
|
||||||
|
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085)
|
||||||
|
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
|
||||||
|
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
|
||||||
|
- locked org.apache.tomcat.util.net.SocketWrapper@7127ee12
|
||||||
|
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
|
||||||
|
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
|
||||||
|
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
|
||||||
|
at java.lang.Thread.run(Thread.java:745)
|
||||||
|
|
||||||
|
Number of locked synchronizers = 1
|
||||||
|
- java.util.concurrent.ThreadPoolExecutor$Worker@31a6493e
|
||||||
|
```
|
||||||
|
|
||||||
|
> Attention: only `synchronized` blocked threads can be located for now, `JUL` not supported yet.
|
||||||
|
|
||||||
|
|
||||||
|
#### thread -i specify the collecting interval
|
||||||
|
|
||||||
|
```sh
|
||||||
|
$ thread -n 3 -i 1000
|
||||||
|
"as-command-execute-daemon" Id=4759 cpuUsage=23% RUNNABLE
|
||||||
|
at sun.management.ThreadImpl.dumpThreads0(Native Method)
|
||||||
|
at sun.management.ThreadImpl.getThreadInfo(ThreadImpl.java:440)
|
||||||
|
at com.taobao.arthas.core.command.monitor200.ThreadCommand.processTopBusyThreads(ThreadCommand.java:133)
|
||||||
|
at com.taobao.arthas.core.command.monitor200.ThreadCommand.process(ThreadCommand.java:79)
|
||||||
|
at com.taobao.arthas.core.shell.command.impl.AnnotatedCommandImpl.process(AnnotatedCommandImpl.java:96)
|
||||||
|
at com.taobao.arthas.core.shell.command.impl.AnnotatedCommandImpl.access$100(AnnotatedCommandImpl.java:27)
|
||||||
|
at com.taobao.arthas.core.shell.command.impl.AnnotatedCommandImpl$ProcessHandler.handle(AnnotatedCommandImpl.java:125)
|
||||||
|
at com.taobao.arthas.core.shell.command.impl.AnnotatedCommandImpl$ProcessHandler.handle(AnnotatedCommandImpl.java:122)
|
||||||
|
at com.taobao.arthas.core.shell.system.impl.ProcessImpl$CommandProcessTask.run(ProcessImpl.java:332)
|
||||||
|
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
|
||||||
|
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
|
||||||
|
at java.lang.Thread.run(Thread.java:756)
|
||||||
|
|
||||||
|
Number of locked synchronizers = 1
|
||||||
|
- java.util.concurrent.ThreadPoolExecutor$Worker@546aeec1
|
||||||
|
...
|
||||||
|
```
|
||||||
@ -0,0 +1,427 @@
|
|||||||
|
|
||||||
|
|
||||||
|
<!DOCTYPE html>
|
||||||
|
<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
|
||||||
|
<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
|
||||||
|
<head>
|
||||||
|
<meta charset="utf-8">
|
||||||
|
|
||||||
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||||
|
|
||||||
|
<title>classloader — Arthas 3.0.5-SNAPSHOT documentation</title>
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
<link rel="shortcut icon" href="_static/favicon.ico"/>
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
<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="Index" href="genindex.html" />
|
||||||
|
<link rel="search" title="Search" href="search.html" />
|
||||||
|
<link rel="prev" title="jad" href="jad.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">
|
||||||
|
3.0.5-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">Installation</a></li>
|
||||||
|
<li class="toctree-l1"><a class="reference internal" href="quick-start.html">Quick start</a></li>
|
||||||
|
<li class="toctree-l1"><a class="reference internal" href="advanced-use.html">Advanced usage</a></li>
|
||||||
|
<li class="toctree-l1 current"><a class="reference internal" href="commands.html">Commands</a><ul class="current">
|
||||||
|
<li class="toctree-l2"><a class="reference internal" href="dashboard.html">dashboard</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference internal" href="thread.html">thread</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference internal" href="jvm.html">jvm</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference internal" href="sysprop.html">sysprop</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference internal" href="getstatic.html">getstatic</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference internal" href="sc.html">sc</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference internal" href="sm.html">sm</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference internal" href="dump.html">dump</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference internal" href="jad.html">jad</a></li>
|
||||||
|
<li class="toctree-l2 current"><a class="current reference internal" href="#">classloader</a><ul>
|
||||||
|
<li class="toctree-l3"><a class="reference internal" href="#options">Options</a></li>
|
||||||
|
<li class="toctree-l3"><a class="reference internal" href="#usage">Usage</a></li>
|
||||||
|
</ul>
|
||||||
|
</li>
|
||||||
|
<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/redefine.md">redefine</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/monitor.md">monitor</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/watch.md">watch</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/trace.md">trace</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/stack.md">stack</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/tt.md">tt</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/options.md">options</a></li>
|
||||||
|
<li class="toctree-l2"><a class="reference internal" href="commands.html#arthas-basic-commands">Arthas Basic Commands</a></li>
|
||||||
|
</ul>
|
||||||
|
</li>
|
||||||
|
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues?q=label%3Auser-case">User cases</a></li>
|
||||||
|
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/release-notes.md">Release Notes</a></li>
|
||||||
|
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues?q=label%3Aquestion-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/blob/master/CONTRIBUTING.md">CONTRIBUTING</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">
|
||||||
|
|
||||||
|
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|
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||||||
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|
||||||
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|
||||||
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|
||||||
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|
||||||
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|
||||||
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|
||||||
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|
||||||
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|
||||||
|
|
||||||
|
|
||||||
|
<div role="navigation" aria-label="breadcrumbs navigation">
|
||||||
|
|
||||||
|
<ul class="wy-breadcrumbs">
|
||||||
|
|
||||||
|
<li><a href="index.html">Docs</a> »</li>
|
||||||
|
|
||||||
|
<li><a href="commands.html">Commands List</a> »</li>
|
||||||
|
|
||||||
|
<li>classloader</li>
|
||||||
|
|
||||||
|
|
||||||
|
<li class="wy-breadcrumbs-aside">
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
<a href="https://github.com/alibaba/arthas/blob/master/site/src/site/sphinx/classloader.md" class="fa fa-github"> Edit on GitHub</a>
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
</li>
|
||||||
|
|
||||||
|
</ul>
|
||||||
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|
||||||
|
|
||||||
|
<hr/>
|
||||||
|
</div>
|
||||||
|
<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
|
||||||
|
<div itemprop="articleBody">
|
||||||
|
|
||||||
|
<div class="section" id="classloader">
|
||||||
|
<span id="classloader"></span><h1>classloader<a class="headerlink" href="#classloader" title="Permalink to this headline">¶</a></h1>
|
||||||
|
<p>Check the inheritance tree, urls and classes loading profiles of the class loaders.</p>
|
||||||
|
<p>It can be a great help for <code class="docutils literal notranslate"><span class="pre">ResourceNotFoundException</span></code> when you can use command <code class="docutils literal notranslate"><span class="pre">classloader</span></code>to specify a class loader to <code class="docutils literal notranslate"><span class="pre">getResources</span></code> and print all the urls of the valid resources.</p>
|
||||||
|
<div class="section" id="options">
|
||||||
|
<span id="options"></span><h2>Options<a class="headerlink" href="#options" title="Permalink to this headline">¶</a></h2>
|
||||||
|
<table border="1" class="docutils">
|
||||||
|
<thead>
|
||||||
|
<tr>
|
||||||
|
<th align="right">Name</th>
|
||||||
|
<th align="left">Specification</th>
|
||||||
|
</tr>
|
||||||
|
</thead>
|
||||||
|
<tbody>
|
||||||
|
<tr>
|
||||||
|
<td align="right">[l]</td>
|
||||||
|
<td align="left">count based on the class loader instance</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right">[t]</td>
|
||||||
|
<td align="left">print all the inheritance structure of the class loaders</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right">[a]</td>
|
||||||
|
<td align="left">list all the classes loaded by all the class loaders (use it with great caution since the output can be huge)</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right"><code>[c:]</code></td>
|
||||||
|
<td align="left">get the hashcode of the class loader</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right"><code>[c: r:]</code></td>
|
||||||
|
<td align="left">using class loader to search resource</td>
|
||||||
|
</tr>
|
||||||
|
</tbody>
|
||||||
|
</table></div>
|
||||||
|
<div class="section" id="usage">
|
||||||
|
<span id="usage"></span><h2>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h2>
|
||||||
|
<ul class="simple">
|
||||||
|
<li>categorised by class loader</li>
|
||||||
|
</ul>
|
||||||
|
<div class="highlight-s notranslate"><div class="highlight"><pre><span></span><span class="o">$</span> classloader
|
||||||
|
name numberOfInstances loadedCountTotal
|
||||||
|
com.taobao.pandora.service.loader.ModuleClassLoader <span class="m">29</span> <span class="m">11659</span>
|
||||||
|
com.taobao.pandora.boot.loader.ReLaunchURLClassLoader <span class="m">1</span> <span class="m">5308</span>
|
||||||
|
BootstrapClassLoader <span class="m">1</span> <span class="m">3711</span>
|
||||||
|
com.taobao.arthas.agent.ArthasClassloader <span class="m">2</span> <span class="m">2825</span>
|
||||||
|
sun.reflect.DelegatingClassLoader <span class="m">332</span> <span class="m">332</span>
|
||||||
|
java.net.URLClassLoader <span class="m">1</span> <span class="m">285</span>
|
||||||
|
sun.misc.Launcher<span class="o">$</span>AppClassLoader <span class="m">1</span> <span class="m">77</span>
|
||||||
|
sun.misc.Launcher<span class="o">$</span>ExtClassLoader <span class="m">1</span> <span class="m">46</span>
|
||||||
|
com.alibaba.fastjson.util.ASMClassLoader <span class="m">2</span> <span class="m">3</span>
|
||||||
|
org.jvnet.hk2.internal.DelegatingClassLoader <span class="m">2</span> <span class="m">2</span>
|
||||||
|
sun.reflect.misc.MethodUtil <span class="m">1</span> <span class="m">1</span>
|
||||||
|
Affect<span class="p">(</span><span class="kp">row</span><span class="o">-</span>cnt<span class="o">:</span><span class="m">11</span><span class="p">)</span> cost <span class="kr">in</span> <span class="m">66</span> ms.
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
<ul class="simple">
|
||||||
|
<li>Categorized by class loader instance</li>
|
||||||
|
</ul>
|
||||||
|
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>$ classloader -l
|
||||||
|
name loadedCount hash parent
|
||||||
|
BootstrapClassLoader 3711 null null
|
||||||
|
com.alibaba.fastjson.util.ASMClassLoader@3bbaa1b8 2 3bbaa1b8 monitor's ModuleClassLoader
|
||||||
|
com.alibaba.fastjson.util.ASMClassLoader@5e255d0b 1 5e255d0b eagleeye-core's ModuleClassLoader
|
||||||
|
com.taobao.arthas.agent.ArthasClassloader@4fa2d7e6 1795 4fa2d7e6 sun.misc.Launcher$ExtClassLoader@a38d7a3
|
||||||
|
com.taobao.arthas.agent.ArthasClassloader@522400c2 1033 522400c2 sun.misc.Launcher$ExtClassLoader@a38d7a3
|
||||||
|
com.taobao.pandora.boot.loader.ReLaunchURLClassLoader@1817d444 5308 1817d444 sun.misc.Launcher$AppClassLoader@14dad5dc
|
||||||
|
tbsession's ModuleClassLoader 285 609cd4d8 null
|
||||||
|
pandora-qos-service's ModuleClassLoader 267 2f8dad04 null
|
||||||
|
pandora-framework's ModuleClassLoader 78 4009e306 null
|
||||||
|
filesync-client's ModuleClassLoader 4 4b8ee4de null
|
||||||
|
rocketmq-client's ModuleClassLoader 431 247bddad null
|
||||||
|
eagleeye-core's ModuleClassLoader 451 1ba9117e null
|
||||||
|
alimonitor-jmonitor's ModuleClassLoader 134 22fcf7ab null
|
||||||
|
metaq-client's ModuleClassLoader 35 41a2befb null
|
||||||
|
hsf-mock's ModuleClassLoader 3 2002fc1d null
|
||||||
|
monitor's ModuleClassLoader 1427 131ef10 null
|
||||||
|
spas-sdk-service's ModuleClassLoader 7 10d307f1 null
|
||||||
|
vipserver-client's ModuleClassLoader 137 7a419da4 null
|
||||||
|
metrics's ModuleClassLoader 146 696da30b null
|
||||||
|
mtop-uncenter's ModuleClassLoader 922 79d8407f null
|
||||||
|
spas-sdk-client's ModuleClassLoader 235 4944252c null
|
||||||
|
live-profiler-pandora's ModuleClassLoader 1 6913c1fb null
|
||||||
|
notify-tr-client's ModuleClassLoader 472 fba92d3 null
|
||||||
|
ons-sdk's ModuleClassLoader 70 23348b5d null
|
||||||
|
tair-plugin's ModuleClassLoader 1053 7c9d8e2 null
|
||||||
|
tddl-client's ModuleClassLoader 2354 4988d8b8 null
|
||||||
|
config-client's ModuleClassLoader 93 429bffaa null
|
||||||
|
diamond-client's ModuleClassLoader 360 3d5c822d null
|
||||||
|
pandolet's ModuleClassLoader 99 41e1e210 null
|
||||||
|
hsf's ModuleClassLoader 1796 3232a28a null
|
||||||
|
acl.plugin's ModuleClassLoader 379 67080771 null
|
||||||
|
buc.sso.client.plugin's ModuleClassLoader 195 13b6aecc null
|
||||||
|
unitrouter's ModuleClassLoader 64 7e5afaa6 null
|
||||||
|
switch's ModuleClassLoader 104 24313fcc null
|
||||||
|
hsf-notify-client's ModuleClassLoader 57 4d0f2471 null
|
||||||
|
java.net.URLClassLoader@7ec7ffd3 285 7ec7ffd3 sun.misc.Launcher$ExtClassLoader@a38d7a3
|
||||||
|
javax.management.remote.rmi.NoCallStackClassLoader@53f65459 1 53f65459 null
|
||||||
|
javax.management.remote.rmi.NoCallStackClassLoader@2833cc44 1 2833cc44 null
|
||||||
|
org.jvnet.hk2.internal.DelegatingClassLoader@72cda8ee 1 72cda8ee monitor's ModuleClassLoader
|
||||||
|
org.jvnet.hk2.internal.DelegatingClassLoader@1f57f96d 1 1f57f96d monitor's ModuleClassLoader
|
||||||
|
sun.misc.Launcher$AppClassLoader@14dad5dc 77 14dad5dc sun.misc.Launcher$ExtClassLoader@a38d7a3
|
||||||
|
sun.misc.Launcher$ExtClassLoader@a38d7a3 46 a38d7a3 null
|
||||||
|
sun.reflect.misc.MethodUtil@1201f221 1 1201f221 sun.misc.Launcher$AppClassLoader@14dad5dc
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
<ul class="simple">
|
||||||
|
<li>Check inheritance tree of the class loaders</li>
|
||||||
|
</ul>
|
||||||
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ classloader -t
|
||||||
|
+-BootstrapClassLoader
|
||||||
|
+-unitrouter<span class="s1">'s ModuleClassLoader</span>
|
||||||
|
<span class="s1">+-diamond-client'</span>s ModuleClassLoader
|
||||||
|
+-sun.misc.Launcher<span class="nv">$ExtClassLoader</span>@548a102f
|
||||||
|
<span class="p">|</span> +-sun.misc.Launcher<span class="nv">$AppClassLoader</span>@14dad5dc
|
||||||
|
<span class="p">|</span> +-com.taobao.arthas.agent.AgentLauncher<span class="nv">$1</span>@334e6bb8
|
||||||
|
<span class="p">|</span> <span class="p">|</span> +-sun.reflect.DelegatingClassLoader@328b3a05
|
||||||
|
<span class="p">|</span> <span class="p">|</span> +-sun.reflect.DelegatingClassLoader@73f44f24
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
<ul class="simple">
|
||||||
|
<li>Check the real urls of <code class="docutils literal notranslate"><span class="pre">URLClassLoader</span></code></li>
|
||||||
|
</ul>
|
||||||
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ classloader -c 5ffe9775
|
||||||
|
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/commons-lang-2.6.jar
|
||||||
|
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/log4j-1.2.16.jar
|
||||||
|
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/logger.api-0.1.4.jar
|
||||||
|
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/pandora.api-2.0.7-SNAPSHOT.jar
|
||||||
|
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/pandora.container-2.0.7-SNAPSHOT.jar
|
||||||
|
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/pandora.thirdcontainer-2.0.7-SNAPSHOT.jar
|
||||||
|
file:/Users/hello/soft/taobao-tomcat-7.0.64/deploy/taobao-hsf.sar/lib/picocontainer-2.14.3.jar
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
<ul class="simple">
|
||||||
|
<li>Using class loader to search for resource</li>
|
||||||
|
</ul>
|
||||||
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ classloader -c 226b143b -r META-INF/MANIFEST.MF
|
||||||
|
jar:file:/Users/hello/.m2/repository/javax/enterprise/cdi-api/1.0/cdi-api-1.0.jar!/META-INF/MANIFEST.MF
|
||||||
|
jar:file:/Users/hello/.m2/repository/javax/annotation/jsr250-api/1.0/jsr250-api-1.0.jar!/META-INF/MANIFEST.MF
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
<ul class="simple">
|
||||||
|
<li>Using class loader to look for <code class="docutils literal notranslate"><span class="pre">*.class</span></code> file</li>
|
||||||
|
</ul>
|
||||||
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ classloader -c 1b6d3586 -r java/lang/String.class
|
||||||
|
jar:file:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/rt.jar!/java/lang/String.class
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
|
||||||
|
|
||||||
|
</div>
|
||||||
|
|
||||||
|
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|
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|
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|
||||||
|
|
||||||
|
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
|
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|
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|
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<a href="jad.html" class="btn btn-neutral" title="jad" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
|
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|
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|
||||||
|
|
||||||
|
|
||||||
|
<hr/>
|
||||||
|
|
||||||
|
<div role="contentinfo">
|
||||||
|
<p>
|
||||||
|
© Copyright 2018, Alibaba Middleware Group, and contributors.
|
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|
|
||||||
|
</p>
|
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|
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|
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|
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|
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|
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|
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|
||||||
|
</section>
|
||||||
|
|
||||||
|
</div>
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
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|
|
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|
<script type="text/javascript">
|
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|
var DOCUMENTATION_OPTIONS = {
|
||||||
|
URL_ROOT:'./',
|
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|
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||||||
|
LANGUAGE:'None',
|
||||||
|
COLLAPSE_INDEX:false,
|
||||||
|
FILE_SUFFIX:'.html',
|
||||||
|
HAS_SOURCE: true,
|
||||||
|
SOURCELINK_SUFFIX: '.txt'
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|
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|
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|
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<script type="text/javascript" src="_static/underscore.js"></script>
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<script type="text/javascript" src="_static/doctools.js"></script>
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<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
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|
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|
|
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|
<script type="text/javascript" src="_static/js/theme.js"></script>
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<script type="text/javascript">
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|
jQuery(function () {
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|
SphinxRtdTheme.Navigation.enable(true);
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});
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</script>
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<div class="github-fork-ribbon-wrapper right">
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||||||
|
<div class="github-fork-ribbon">
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3.0.5-SNAPSHOT
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<li class="toctree-l2 current"><a class="current reference internal" href="#">dump</a><ul>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/redefine.md">redefine</a></li>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/monitor.md">monitor</a></li>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/watch.md">watch</a></li>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/trace.md">trace</a></li>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/stack.md">stack</a></li>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/tt.md">tt</a></li>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/options.md">options</a></li>
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<li class="toctree-l2"><a class="reference internal" href="commands.html#arthas-basic-commands">Arthas Basic Commands</a></li>
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</ul>
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</li>
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||||||
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues?q=label%3Auser-case">User cases</a></li>
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||||||
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/release-notes.md">Release Notes</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues?q=label%3Aquestion-answered">Questions and answers</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas">Fork me at GitHub</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/blob/master/CONTRIBUTING.md">CONTRIBUTING</a></li>
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<li><a href="index.html">Docs</a> »</li>
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<li><a href="commands.html">Commands List</a> »</li>
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<hr/>
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</div>
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<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
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<div itemprop="articleBody">
|
||||||
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||||||
|
<div class="section" id="dump">
|
||||||
|
<span id="dump"></span><h1>dump<a class="headerlink" href="#dump" title="Permalink to this headline">¶</a></h1>
|
||||||
|
<p>Dump the bytecode the loaded classes to a specified directory.</p>
|
||||||
|
<div class="section" id="options">
|
||||||
|
<span id="options"></span><h2>Options<a class="headerlink" href="#options" title="Permalink to this headline">¶</a></h2>
|
||||||
|
<table border="1" class="docutils">
|
||||||
|
<thead>
|
||||||
|
<tr>
|
||||||
|
<th align="right">Name</th>
|
||||||
|
<th align="left">Specification</th>
|
||||||
|
</tr>
|
||||||
|
</thead>
|
||||||
|
<tbody>
|
||||||
|
<tr>
|
||||||
|
<td align="right"><em>class-pattern</em></td>
|
||||||
|
<td align="left">pattern for the class name</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right"><code>[c:]</code></td>
|
||||||
|
<td align="left">hashcode of the class loader that loaded the class</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right">[E]</td>
|
||||||
|
<td align="left">turn on regx matching while the default is wildcards matching</td>
|
||||||
|
</tr>
|
||||||
|
</tbody>
|
||||||
|
</table></div>
|
||||||
|
<div class="section" id="usage">
|
||||||
|
<span id="usage"></span><h2>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h2>
|
||||||
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ dump -E org<span class="se">\.</span>apache<span class="se">\.</span>commons<span class="se">\.</span>lang<span class="se">\.</span>StringUtils
|
||||||
|
HASHCODE CLASSLOADER LOCATION
|
||||||
|
29505d69 +-tddl-client<span class="s1">'s ModuleClassLoader /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/com.taobao.pandora</span>
|
||||||
|
<span class="s1"> .service.loader.ModuleClassLoader-29505d69/org.apache.commons.lang.StringUtils.class</span>
|
||||||
|
<span class="s1"> 6e51ad67 +-java.net.URLClassLoader@6e51ad67 /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/java.net.URLClassL</span>
|
||||||
|
<span class="s1"> +-sun.misc.Launcher$AppClassLoader@6951a712 oader-6e51ad67/org.apache.commons.lang.StringUtils.class</span>
|
||||||
|
<span class="s1"> +-sun.misc.Launcher$ExtClassLoader@6fafc4c2</span>
|
||||||
|
<span class="s1"> 2bdd9114 +-pandora-qos-service'</span>s ModuleClassLoader /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/com.taobao.pandora
|
||||||
|
.service.loader.ModuleClassLoader-2bdd9114/org.apache.commons.lang.StringUtils.class
|
||||||
|
544dc9ba +-com.taobao.tomcat.container.context.loader.AliWebappClassLoader /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/com.taobao.tomcat.
|
||||||
|
+-org.apache.catalina.loader.StandardClassLoader@2302e984 container.context.loader.AliWebappClassLoader-544dc9ba/org.apache.commons.lang.String
|
||||||
|
+-sun.misc.Launcher<span class="nv">$AppClassLoader</span>@6951a712 Utils.class
|
||||||
|
+-sun.misc.Launcher<span class="nv">$ExtClassLoader</span>@6fafc4c2
|
||||||
|
22880c2b +-java.net.URLClassLoader@22880c2b /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/java.net.URLClassL
|
||||||
|
+-sun.misc.Launcher<span class="nv">$AppClassLoader</span>@6951a712 oader-22880c2b/org.apache.commons.lang.StringUtils.class
|
||||||
|
+-sun.misc.Launcher<span class="nv">$ExtClassLoader</span>@6fafc4c2
|
||||||
|
Affect<span class="o">(</span>row-cnt:5<span class="o">)</span> cost in <span class="m">156</span> ms.
|
||||||
|
$ dump -E org<span class="se">\.</span>apache<span class="se">\.</span>commons<span class="se">\.</span>lang<span class="se">\.</span>StringUtils -c 22880c2b
|
||||||
|
HASHCODE CLASSLOADER LOCATION
|
||||||
|
22880c2b +-java.net.URLClassLoader@22880c2b /Users/zhuyong/middleware/taobao-tomcat/output/build/bin/classdump/java.net.URLClassLoader-22880c2b/org
|
||||||
|
+-sun.misc.Launcher<span class="nv">$AppClassLoader</span>@6951a712 .apache.commons.lang.StringUtils.class
|
||||||
|
+-sun.misc.Launcher<span class="nv">$ExtClassLoader</span>@6fafc4c2
|
||||||
|
Affect<span class="o">(</span>row-cnt:1<span class="o">)</span> cost in <span class="m">67</span> ms.
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
|
||||||
|
|
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|
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|
||||||
|
|
||||||
|
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|
||||||
|
<footer>
|
||||||
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|
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|
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
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|
<a href="jad.html" class="btn btn-neutral float-right" title="jad" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a>
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<a href="sm.html" class="btn btn-neutral" title="sm" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
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|
<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>.
|
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</footer>
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|
</div>
|
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|
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|
</section>
|
||||||
|
|
||||||
|
</div>
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
<script type="text/javascript">
|
||||||
|
var DOCUMENTATION_OPTIONS = {
|
||||||
|
URL_ROOT:'./',
|
||||||
|
VERSION:'3.0.5-SNAPSHOT',
|
||||||
|
LANGUAGE:'None',
|
||||||
|
COLLAPSE_INDEX:false,
|
||||||
|
FILE_SUFFIX:'.html',
|
||||||
|
HAS_SOURCE: true,
|
||||||
|
SOURCELINK_SUFFIX: '.txt'
|
||||||
|
};
|
||||||
|
</script>
|
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|
<script type="text/javascript" src="_static/jquery.js"></script>
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<script type="text/javascript" src="_static/underscore.js"></script>
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<script type="text/javascript" src="_static/doctools.js"></script>
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<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>
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<script type="text/javascript" src="_static/js/theme.js"></script>
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<script type="text/javascript">
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jQuery(function () {
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SphinxRtdTheme.Navigation.enable(true);
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});
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</script>
|
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<div class="github-fork-ribbon-wrapper right">
|
||||||
|
<div class="github-fork-ribbon">
|
||||||
|
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<div class="section" id="getstatic">
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<span id="getstatic"></span><h1>getstatic<a class="headerlink" href="#getstatic" title="Permalink to this headline">¶</a></h1>
|
||||||
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<p>Check the static fields of classes conveniently as <code class="docutils literal notranslate"><span class="pre">getstatic</span> <span class="pre">class_name</span> <span class="pre">field_name</span></code></p>
|
||||||
|
<p>Tip: if the <em>field</em> is a composite object, you can even use <a class="reference external" href="https://en.wikipedia.org/wiki/OGNL"><code class="docutils literal notranslate"><span class="pre">OGNL</span></code></a> to traverse, filter and access the internal properties of it.</p>
|
||||||
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<p>E.g. suppose <code class="docutils literal notranslate"><span class="pre">n</span></code> is a <code class="docutils literal notranslate"><span class="pre">Map</span></code> and the key is a <code class="docutils literal notranslate"><span class="pre">Enum</span></code> then if you want to get the key with a specific <code class="docutils literal notranslate"><span class="pre">Enum</span></code> value - <code class="docutils literal notranslate"><span class="pre">STOP</span></code> or <code class="docutils literal notranslate"><span class="pre">a</span></code>, you can achieve it as:</p>
|
||||||
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ getstatic com.alibaba.arthas.Test n 'entrySet().iterator.{? #this.key.name()=="STOP"}'
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field: n
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@ArrayList[
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@Node[STOP=bbb],
|
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]
|
||||||
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Affect(row-cnt:1) cost in 68 ms.
|
||||||
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||||||
|
$ getstatic com.alibaba.arthas.Test m 'entrySet().iterator.{? #this.key=="a"}'
|
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field: m
|
||||||
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@ArrayList[
|
||||||
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@Node[a=aaa],
|
||||||
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]
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||||||
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</pre></div>
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<a href="index.html" class="icon icon-home"> Arthas
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<li class="toctree-l2 current"><a class="current reference internal" href="#">jvm</a><ul>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/tt.md">tt</a></li>
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<li class="toctree-l2"><a class="reference internal" href="commands.html#arthas-basic-commands">Arthas Basic Commands</a></li>
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<li><a href="commands.html">Commands List</a> »</li>
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||||||
|
<div class="section" id="jvm">
|
||||||
|
<span id="jvm"></span><h1>jvm<a class="headerlink" href="#jvm" title="Permalink to this headline">¶</a></h1>
|
||||||
|
<p>Check the JVM profile</p>
|
||||||
|
<div class="section" id="usage">
|
||||||
|
<span id="usage"></span><h2>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h2>
|
||||||
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ jvm
|
||||||
|
CATEGORY INFO
|
||||||
|
------------------------------------------------------------------------------------------------------------------------------------
|
||||||
|
|
||||||
|
RUNTIME MACHINE-NAME hellodeMacBook-Air.local
|
||||||
|
JVM-START-TIME 2015-12-23 10:54:18
|
||||||
|
MANAGEMENT-SPEC-VERSION 1.2
|
||||||
|
SPEC-NAME Java Virtual Machine Specification
|
||||||
|
SPEC-VENDOR Oracle Corporation
|
||||||
|
SPEC-VERSION 1.8
|
||||||
|
VM-NAME Java HotSpot(TM) 64-Bit Server VM
|
||||||
|
VM-VENDOR Oracle Corporation
|
||||||
|
VM-VERSION 25.60-b23
|
||||||
|
INPUT-ARGUMENTS -Xbootclasspath/a:/Users/hello/.jenv/versions/1.8/lib/tools.jar
|
||||||
|
-Djava.util.logging.config.file=/Users/hello/code/java/crash/packaging/target/
|
||||||
|
conf/logging.properties
|
||||||
|
|
||||||
|
CLASS-PATH /Users/hello/.jenv/versions/1.8/lib/tools.jar:/Users/hello/code/java/cras
|
||||||
|
h/packaging/target/bin/crash.cli-1.3.2-SNAPSHOT.jar::/Users/hello/code/java/cr
|
||||||
|
ash/packaging/target/lib/bcpkix-jdk15on-1.51.jar:/Users/hello/code/java/crash/
|
||||||
|
packaging/target/lib/bcprov-jdk15on-1.51.jar:/Users/hello/code/java/crash/pack
|
||||||
|
aging/target/lib/crash.connectors.ssh-1.3.2-SNAPSHOT-standalone.jar:/Users/hengyuna
|
||||||
|
bc/code/java/crash/packaging/target/lib/crash.connectors.telnet-1.3.2-SNAPSHOT-stan
|
||||||
|
dalone.jar:/Users/hello/code/java/crash/packaging/target/lib/crash.shell-1.3.2
|
||||||
|
-SNAPSHOT.jar:/Users/hello/code/java/crash/packaging/target/lib/groovy-all-1.8
|
||||||
|
.9.jar:/Users/hello/code/java/crash/packaging/target/lib/ivy-2.2.0.jar
|
||||||
|
BOOT-CLASS-PATH /Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/resources.j
|
||||||
|
ar:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/rt.jar:/
|
||||||
|
Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/sunrsasign.j
|
||||||
|
ar:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jsse.jar
|
||||||
|
:/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jce.jar:/L
|
||||||
|
ibrary/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/charsets.jar:
|
||||||
|
/Library/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/lib/jfr.jar:/Li
|
||||||
|
brary/Java/JavaVirtualMachines/jdk1.8.0_60.jdk/Contents/Home/jre/classes:/Users/hen
|
||||||
|
gyunabc/.jenv/versions/1.8/lib/tools.jar
|
||||||
|
LIBRARY-PATH /Users/hello/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library
|
||||||
|
/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.
|
||||||
|
|
||||||
|
CLASS-LOADING LOADED-CLASS-COUNT 4264
|
||||||
|
TOTAL-LOADED-CLASS-COUNT 4264
|
||||||
|
UNLOADED-CLASS-COUNT 0
|
||||||
|
IS-VERBOSE false
|
||||||
|
|
||||||
|
COMPILATION NAME HotSpot 64-Bit Tiered Compilers
|
||||||
|
TOTAL-COMPILE-TIME 5145(ms)
|
||||||
|
|
||||||
|
GARBAGE-COLLECTORS PS Scavenge 6/74(ms)
|
||||||
|
[count/time]
|
||||||
|
PS MarkSweep 1/64(ms)
|
||||||
|
[count/time]
|
||||||
|
|
||||||
|
MEMORY-MANAGERS CodeCacheManager Code Cache
|
||||||
|
|
||||||
|
Metaspace Manager Metaspace
|
||||||
|
Compressed Class Space
|
||||||
|
|
||||||
|
PS Scavenge PS Eden Space
|
||||||
|
PS Survivor Space
|
||||||
|
|
||||||
|
PS MarkSweep PS Eden Space
|
||||||
|
PS Survivor Space
|
||||||
|
PS Old Gen
|
||||||
|
|
||||||
|
MEMORY HEAP-MEMORY-USAGE 186646528/134217728/1908932608/31245568
|
||||||
|
[committed/init/max/used]
|
||||||
|
NO-HEAP-MEMORY-USAGE 35520512/2555904/-1/34584616
|
||||||
|
[committed/init/max/used]
|
||||||
|
PENDING-FINALIZE-COUNT 0
|
||||||
|
|
||||||
|
OPERATING-SYSTEM OS Mac OS X
|
||||||
|
ARCH x86_64
|
||||||
|
PROCESSORS-COUNT 4
|
||||||
|
LOAD-AVERAGE 2.328125
|
||||||
|
VERSION 10.10.5
|
||||||
|
|
||||||
|
THREAD COUNT 16
|
||||||
|
DAEMON-COUNT 10
|
||||||
|
LIVE-COUNT 18
|
||||||
|
STARTED-COUNT 19
|
||||||
|
Affect cost in 2 ms.
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
<div class="section" id="thread-related">
|
||||||
|
<span id="thread-related"></span><h2>thread-related<a class="headerlink" href="#thread-related" title="Permalink to this headline">¶</a></h2>
|
||||||
|
<ul class="simple">
|
||||||
|
<li>COUNT: the count of active threads</li>
|
||||||
|
<li>DAEMON-COUNT: the count of active daemon threads</li>
|
||||||
|
<li>LIVE-COUNT: the maximum count of the live threads since JVM starts</li>
|
||||||
|
<li>STARTED-COUNT: the total count of the created threads since JVM starts</li>
|
||||||
|
</ul>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
|
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|
|
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|
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|
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|
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|
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|
<hr/>
|
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||||||
|
<div role="contentinfo">
|
||||||
|
<p>
|
||||||
|
© Copyright 2018, Alibaba Middleware Group, and contributors.
|
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|
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|
</p>
|
||||||
|
</div>
|
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|
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>.
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</section>
|
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|
</div>
|
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|
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<script type="text/javascript">
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var DOCUMENTATION_OPTIONS = {
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|
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|
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|
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|
LANGUAGE:'None',
|
||||||
|
COLLAPSE_INDEX:false,
|
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|
FILE_SUFFIX:'.html',
|
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|
HAS_SOURCE: true,
|
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|
SOURCELINK_SUFFIX: '.txt'
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|
<div class="github-fork-ribbon">
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<a href="https://github.com/alibaba/arthas">Fork me at GitHub</a>
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<script type="text/javascript" src="_static/add_badges.js"></script>
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|
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|
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|
</body>
|
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</html>
|
||||||
@ -0,0 +1,374 @@
|
|||||||
|
|
||||||
|
|
||||||
|
<!DOCTYPE html>
|
||||||
|
<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
|
||||||
|
<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
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<head>
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<meta charset="utf-8">
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|
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|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
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|
||||||
|
<title>sc — Arthas 3.0.5-SNAPSHOT documentation</title>
|
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|
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|
|
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|
|
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|
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|
<link rel="shortcut icon" href="_static/favicon.ico"/>
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|
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|
|
||||||
|
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<li class="toctree-l2"><a class="reference internal" href="commands.html#arthas-basic-commands">Arthas Basic Commands</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas">Fork me at GitHub</a></li>
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<li><a href="commands.html">Commands List</a> »</li>
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<li>sc</li>
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<li class="wy-breadcrumbs-aside">
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</div>
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<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
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<div itemprop="articleBody">
|
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|
||||||
|
<div class="section" id="sc">
|
||||||
|
<span id="sc"></span><h1>sc<a class="headerlink" href="#sc" title="Permalink to this headline">¶</a></h1>
|
||||||
|
<p>Check the profiles of the loaded classes.</p>
|
||||||
|
<p>Abbreviated from “Search-Class”; with the help of this command, you can search out all the loaded classes in JVM. Supported options are: <code class="docutils literal notranslate"><span class="pre">[d]</span></code>、<code class="docutils literal notranslate"><span class="pre">[E]</span></code>、<code class="docutils literal notranslate"><span class="pre">[f]</span></code> and <code class="docutils literal notranslate"><span class="pre">[x:]</span></code>.</p>
|
||||||
|
<div class="section" id="options">
|
||||||
|
<span id="options"></span><h2>Options<a class="headerlink" href="#options" title="Permalink to this headline">¶</a></h2>
|
||||||
|
<div class="section" id="specification">
|
||||||
|
<span id="specification"></span><h3>Specification<a class="headerlink" href="#specification" title="Permalink to this headline">¶</a></h3>
|
||||||
|
<table border="1" class="docutils">
|
||||||
|
<thead>
|
||||||
|
<tr>
|
||||||
|
<th align="right">Name</th>
|
||||||
|
<th align="left">Specification</th>
|
||||||
|
</tr>
|
||||||
|
</thead>
|
||||||
|
<tbody>
|
||||||
|
<tr>
|
||||||
|
<td align="right"><em>class-pattern</em></td>
|
||||||
|
<td align="left">pattern for the class name</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right"><em>method-pattern</em></td>
|
||||||
|
<td align="left">pattern for the method name</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right">[d]</td>
|
||||||
|
<td align="left">print the details of the current class including the source file, class declaration, the class loaders and the like.<br/>F.Y.I if a class is loaded by several class loaders, then the class will be printed several times</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right">[E]</td>
|
||||||
|
<td align="left">turn on regx matching while the default is wildcards matching</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right">[f]</td>
|
||||||
|
<td align="left">print the fields info of the current class, which should be used along with <code>-d</code></td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right">[x:]</td>
|
||||||
|
<td align="left">the depth to print the static fields, whose default is <code>0</code> - directly invoke the <code>toString()</code></td>
|
||||||
|
</tr>
|
||||||
|
</tbody>
|
||||||
|
</table><p>Tip:</p>
|
||||||
|
<ol class="simple">
|
||||||
|
<li><em>class-patten</em> supports full qualified class name (e.g. com.taobao.test.AAA and com/taobao/test/AAA)</li>
|
||||||
|
<li><code class="docutils literal notranslate"><span class="pre">sc</span></code> turned on the <code class="docutils literal notranslate"><span class="pre">sub-class</span></code> matching in default mode, if you do want to hide the <code class="docutils literal notranslate"><span class="pre">sub-class</span></code> please just turn it off via <code class="docutils literal notranslate"><span class="pre">options</span> <span class="pre">disable-sub-class</span> <span class="pre">true</span></code>.</li>
|
||||||
|
</ol>
|
||||||
|
</div>
|
||||||
|
<div class="section" id="usage">
|
||||||
|
<span id="usage"></span><h3>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h3>
|
||||||
|
<p>Check the static fields of a class using <code class="docutils literal notranslate"><span class="pre">sc</span> <span class="pre">-df</span> <span class="pre">class-name</span></code></p>
|
||||||
|
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>$ sc -df org.apache.commons.lang.StringUtils
|
||||||
|
|
||||||
|
class-info org.apache.commons.lang.StringUtils
|
||||||
|
code-source /Users/zhuyong/middleware/citrus-sample/petstore/web/target/petstore/WEB-INF/lib/commons-lang-2.4.jar
|
||||||
|
name org.apache.commons.lang.StringUtils
|
||||||
|
isInterface <span class="nb">false</span>
|
||||||
|
isAnnotation <span class="nb">false</span>
|
||||||
|
isEnum <span class="nb">false</span>
|
||||||
|
isAnonymousClass <span class="nb">false</span>
|
||||||
|
isArray <span class="nb">false</span>
|
||||||
|
isLocalClass <span class="nb">false</span>
|
||||||
|
isMemberClass <span class="nb">false</span>
|
||||||
|
isPrimitive <span class="nb">false</span>
|
||||||
|
isSynthetic <span class="nb">false</span>
|
||||||
|
simple-name StringUtils
|
||||||
|
modifier public
|
||||||
|
annotation
|
||||||
|
interfaces
|
||||||
|
super-class +-java.lang.Object
|
||||||
|
class-loader +-com.taobao.tomcat.container.context.loader.AliWebappClassLoader
|
||||||
|
+-org.apache.catalina.loader.StandardClassLoader@1d44eef3
|
||||||
|
+-sun.misc.Launcher<span class="nv">$AppClassLoader</span>@57a462c9
|
||||||
|
+-sun.misc.Launcher<span class="nv">$ExtClassLoader</span>@6951a712
|
||||||
|
fields modifier final,public,static
|
||||||
|
<span class="nb">type</span> java.lang.String
|
||||||
|
name EMPTY
|
||||||
|
value
|
||||||
|
|
||||||
|
modifier final,public,static
|
||||||
|
<span class="nb">type</span> int
|
||||||
|
name INDEX_NOT_FOUND
|
||||||
|
value -1
|
||||||
|
|
||||||
|
modifier final,private,static
|
||||||
|
<span class="nb">type</span> int
|
||||||
|
name PAD_LIMIT
|
||||||
|
value <span class="m">8192</span>
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
|
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<hr/>
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|
<div role="contentinfo">
|
||||||
|
<p>
|
||||||
|
© Copyright 2018, Alibaba Middleware Group, and contributors.
|
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|
</p>
|
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|
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|
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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>.
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</section>
|
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</div>
|
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<script type="text/javascript">
|
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var DOCUMENTATION_OPTIONS = {
|
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URL_ROOT:'./',
|
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|
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|
LANGUAGE:'None',
|
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|
COLLAPSE_INDEX:false,
|
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|
FILE_SUFFIX:'.html',
|
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|
HAS_SOURCE: true,
|
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|
SOURCELINK_SUFFIX: '.txt'
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};
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</script>
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<script type="text/javascript" src="_static/jquery.js"></script>
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<script type="text/javascript">
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jQuery(function () {
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SphinxRtdTheme.Navigation.enable(true);
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</script>
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<div class="github-fork-ribbon-wrapper right">
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<div class="github-fork-ribbon">
|
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|
<a href="https://github.com/alibaba/arthas">Fork me at GitHub</a>
|
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<script type="text/javascript" src="_static/add_badges.js"></script>
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var hm = document.createElement("script");
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3.0.5-SNAPSHOT
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/redefine.md">redefine</a></li>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/watch.md">watch</a></li>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/trace.md">trace</a></li>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/stack.md">stack</a></li>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/tt.md">tt</a></li>
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<li class="toctree-l2"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/options.md">options</a></li>
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<li class="toctree-l2"><a class="reference internal" href="commands.html#arthas-basic-commands">Arthas Basic Commands</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues?q=label%3Auser-case">User cases</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/release-notes.md">Release Notes</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas">Fork me at GitHub</a></li>
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<li><a href="commands.html">Commands List</a> »</li>
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<li>sm</li>
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<a href="https://github.com/alibaba/arthas/blob/master/site/src/site/sphinx/sm.md" class="fa fa-github"> Edit on GitHub</a>
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<hr/>
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</div>
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<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
|
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<div itemprop="articleBody">
|
||||||
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|
||||||
|
<div class="section" id="sm">
|
||||||
|
<span id="sm"></span><h1>sm<a class="headerlink" href="#sm" title="Permalink to this headline">¶</a></h1>
|
||||||
|
<p>Check the method profile of the loaded classes;</p>
|
||||||
|
<p>Abbreviated from “Search-Method”, with which you can search out all methods profiles of the loaded classes.</p>
|
||||||
|
<p>F.Y.I
|
||||||
|
<code class="docutils literal notranslate"><span class="pre">sm</span></code> only shows the methods declared in the current class; methods declared in ancestors will not be presented.</p>
|
||||||
|
<div class="section" id="options">
|
||||||
|
<span id="options"></span><h2>Options<a class="headerlink" href="#options" title="Permalink to this headline">¶</a></h2>
|
||||||
|
<table border="1" class="docutils">
|
||||||
|
<thead>
|
||||||
|
<tr>
|
||||||
|
<th align="right">Name</th>
|
||||||
|
<th align="left">Specification</th>
|
||||||
|
</tr>
|
||||||
|
</thead>
|
||||||
|
<tbody>
|
||||||
|
<tr>
|
||||||
|
<td align="right"><em>class-pattern</em></td>
|
||||||
|
<td align="left">pattern for class name</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right"><em>method-pattern</em></td>
|
||||||
|
<td align="left">pattern for method name</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right">[d]</td>
|
||||||
|
<td align="left">print the details of the method</td>
|
||||||
|
</tr>
|
||||||
|
<tr>
|
||||||
|
<td align="right">[E]</td>
|
||||||
|
<td align="left">turn the regex matching on while the default mode is wildcards matching</td>
|
||||||
|
</tr>
|
||||||
|
</tbody>
|
||||||
|
</table></div>
|
||||||
|
<div class="section" id="usage">
|
||||||
|
<span id="usage"></span><h2>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h2>
|
||||||
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ sm org.apache.catalina.connector.Connector
|
||||||
|
org.apache.catalina.connector.Connector-><init>
|
||||||
|
org.apache.catalina.connector.Connector->setProperty
|
||||||
|
org.apache.catalina.connector.Connector->getProperty
|
||||||
|
org.apache.catalina.connector.Connector->toString
|
||||||
|
org.apache.catalina.connector.Connector->resume
|
||||||
|
org.apache.catalina.connector.Connector->getScheme
|
||||||
|
org.apache.catalina.connector.Connector->getProtocol
|
||||||
|
org.apache.catalina.connector.Connector->getPort
|
||||||
|
org.apache.catalina.connector.Connector->setService
|
||||||
|
org.apache.catalina.connector.Connector->setPort
|
||||||
|
org.apache.catalina.connector.Connector->getService
|
||||||
|
org.apache.catalina.connector.Connector->getAttribute
|
||||||
|
org.apache.catalina.connector.Connector->setAttribute
|
||||||
|
org.apache.catalina.connector.Connector->getLocalPort
|
||||||
|
org.apache.catalina.connector.Connector->pause
|
||||||
|
org.apache.catalina.connector.Connector->setProtocol
|
||||||
|
org.apache.catalina.connector.Connector->initInternal
|
||||||
|
org.apache.catalina.connector.Connector->setSecure
|
||||||
|
org.apache.catalina.connector.Connector->getSecure
|
||||||
|
org.apache.catalina.connector.Connector->startInternal
|
||||||
|
org.apache.catalina.connector.Connector->stopInternal
|
||||||
|
org.apache.catalina.connector.Connector->setScheme
|
||||||
|
org.apache.catalina.connector.Connector->createRequest
|
||||||
|
org.apache.catalina.connector.Connector->getDomainInternal
|
||||||
|
org.apache.catalina.connector.Connector->getProtocolHandler
|
||||||
|
org.apache.catalina.connector.Connector->setURIEncoding
|
||||||
|
org.apache.catalina.connector.Connector->findSslHostConfigs
|
||||||
|
org.apache.catalina.connector.Connector->destroyInternal
|
||||||
|
org.apache.catalina.connector.Connector->getObjectNameKeyProperties
|
||||||
|
org.apache.catalina.connector.Connector->getAllowTrace
|
||||||
|
org.apache.catalina.connector.Connector->setAllowTrace
|
||||||
|
org.apache.catalina.connector.Connector->getAsyncTimeout
|
||||||
|
org.apache.catalina.connector.Connector->setAsyncTimeout
|
||||||
|
org.apache.catalina.connector.Connector->getEnableLookups
|
||||||
|
org.apache.catalina.connector.Connector->setEnableLookups
|
||||||
|
org.apache.catalina.connector.Connector->getMaxCookieCount
|
||||||
|
...
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>$ sm org.apache.catalina.connector.Connector -d
|
||||||
|
declaring-class org.apache.catalina.connector.Connector
|
||||||
|
constructor-name <init>
|
||||||
|
modifier public
|
||||||
|
annotation
|
||||||
|
parameters
|
||||||
|
exceptions
|
||||||
|
|
||||||
|
declaring-class org.apache.catalina.connector.Connector
|
||||||
|
constructor-name <init>
|
||||||
|
modifier public
|
||||||
|
annotation
|
||||||
|
parameters java.lang.String
|
||||||
|
exceptions
|
||||||
|
|
||||||
|
declaring-class org.apache.catalina.connector.Connector
|
||||||
|
method-name setProperty
|
||||||
|
modifier public
|
||||||
|
annotation
|
||||||
|
parameters java.lang.String
|
||||||
|
java.lang.String
|
||||||
|
<span class="k">return</span> boolean
|
||||||
|
exceptions
|
||||||
|
......
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
|
||||||
|
|
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|
</div>
|
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|
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|
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|
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<footer>
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|
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
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|
<a href="dump.html" class="btn btn-neutral float-right" title="dump" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a>
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<a href="sc.html" class="btn btn-neutral" title="sc" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
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|
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|
<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>.
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|
</section>
|
||||||
|
|
||||||
|
</div>
|
||||||
|
|
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|
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|
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|
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|
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|
<script type="text/javascript">
|
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var DOCUMENTATION_OPTIONS = {
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LANGUAGE:'None',
|
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|
COLLAPSE_INDEX:false,
|
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|
FILE_SUFFIX:'.html',
|
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|
HAS_SOURCE: true,
|
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|
SOURCELINK_SUFFIX: '.txt'
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<li class="toctree-l2 current"><a class="current reference internal" href="#">sysprop</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="#usage">Usage</a><ul>
|
||||||
|
<li class="toctree-l4"><a class="reference internal" href="#check-all-properties">Check all properties</a></li>
|
||||||
|
<li class="toctree-l4"><a class="reference internal" href="#check-a-single-property">Check a single property</a></li>
|
||||||
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<li class="toctree-l4"><a class="reference internal" href="#modify-a-single-property">Modify a single property</a></li>
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<li class="toctree-l2"><a class="reference internal" href="commands.html#arthas-basic-commands">Arthas Basic Commands</a></li>
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|
||||||
|
<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues?q=label%3Auser-case">User cases</a></li>
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||||||
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<hr/>
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</div>
|
||||||
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<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
|
||||||
|
<div itemprop="articleBody">
|
||||||
|
|
||||||
|
<div class="section" id="sysprop">
|
||||||
|
<span id="sysprop"></span><h1>sysprop<a class="headerlink" href="#sysprop" title="Permalink to this headline">¶</a></h1>
|
||||||
|
<p>Check the JVM system properties.</p>
|
||||||
|
<div class="section" id="usage">
|
||||||
|
<span id="usage"></span><h2>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h2>
|
||||||
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> <span class="n">USAGE</span><span class="p">:</span>
|
||||||
|
<span class="n">sysprop</span> <span class="p">[</span><span class="o">-</span><span class="n">h</span><span class="p">]</span> <span class="p">[</span><span class="nb">property</span><span class="o">-</span><span class="n">name</span><span class="p">]</span> <span class="p">[</span><span class="nb">property</span><span class="o">-</span><span class="n">value</span><span class="p">]</span>
|
||||||
|
|
||||||
|
<span class="n">SUMMARY</span><span class="p">:</span>
|
||||||
|
<span class="n">Display</span><span class="p">,</span> <span class="ow">and</span> <span class="n">change</span> <span class="nb">all</span> <span class="n">the</span> <span class="n">system</span> <span class="n">properties</span><span class="o">.</span>
|
||||||
|
|
||||||
|
<span class="n">EXAMPLES</span><span class="p">:</span>
|
||||||
|
<span class="n">sysprop</span>
|
||||||
|
<span class="n">sysprop</span> <span class="n">file</span><span class="o">.</span><span class="n">encoding</span>
|
||||||
|
<span class="n">sysprop</span> <span class="n">production</span><span class="o">.</span><span class="n">mode</span> <span class="n">true</span>
|
||||||
|
|
||||||
|
<span class="n">WIKI</span><span class="p">:</span>
|
||||||
|
<span class="n">https</span><span class="p">:</span><span class="o">//</span><span class="n">alibaba</span><span class="o">.</span><span class="n">github</span><span class="o">.</span><span class="n">io</span><span class="o">/</span><span class="n">arthas</span><span class="o">/</span><span class="n">sysprop</span>
|
||||||
|
|
||||||
|
<span class="n">OPTIONS</span><span class="p">:</span>
|
||||||
|
<span class="o">-</span><span class="n">h</span><span class="p">,</span> <span class="o">--</span><span class="n">help</span> <span class="n">this</span> <span class="n">help</span>
|
||||||
|
<span class="o"><</span><span class="nb">property</span><span class="o">-</span><span class="n">name</span><span class="o">></span> <span class="nb">property</span> <span class="n">name</span>
|
||||||
|
<span class="o"><</span><span class="nb">property</span><span class="o">-</span><span class="n">value</span><span class="o">></span> <span class="nb">property</span> <span class="n">value</span>
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
<div class="section" id="check-all-properties">
|
||||||
|
<span id="check-all-properties"></span><h3>Check all properties<a class="headerlink" href="#check-all-properties" title="Permalink to this headline">¶</a></h3>
|
||||||
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ sysprop
|
||||||
|
KEY VALUE
|
||||||
|
-------------------------------------------------------------------------------------------------------------------------------------
|
||||||
|
java.runtime.name Java(TM) SE Runtime Environment
|
||||||
|
sun.boot.library.path /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib
|
||||||
|
java.vm.version 25.51-b03
|
||||||
|
user.country.format CN
|
||||||
|
gopherProxySet false
|
||||||
|
java.vm.vendor Oracle Corporation
|
||||||
|
java.vendor.url http://java.oracle.com/
|
||||||
|
path.separator :
|
||||||
|
java.vm.name Java HotSpot(TM) 64-Bit Server VM
|
||||||
|
file.encoding.pkg sun.io
|
||||||
|
user.country US
|
||||||
|
sun.java.launcher SUN_STANDARD
|
||||||
|
sun.os.patch.level unknown
|
||||||
|
java.vm.specification.name Java Virtual Machine Specification
|
||||||
|
user.dir /private/var/tmp
|
||||||
|
java.runtime.version 1.8.0_51-b16
|
||||||
|
java.awt.graphicsenv sun.awt.CGraphicsEnvironment
|
||||||
|
java.endorsed.dirs /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib/endors
|
||||||
|
ed
|
||||||
|
os.arch x86_64
|
||||||
|
java.io.tmpdir /var/folders/2c/tbxwzs4s4sbcvh7frbcc7n000000gn/T/
|
||||||
|
line.separator
|
||||||
|
|
||||||
|
java.vm.specification.vendor Oracle Corporation
|
||||||
|
os.name Mac OS X
|
||||||
|
sun.jnu.encoding UTF-8
|
||||||
|
java.library.path /Users/wangtao/Library/Java/Extensions:/Library/Java/Extensions:/Network/Libra
|
||||||
|
ry/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.
|
||||||
|
sun.nio.ch.bugLevel
|
||||||
|
java.specification.name Java Platform API Specification
|
||||||
|
java.class.version 52.0
|
||||||
|
sun.management.compiler HotSpot 64-Bit Tiered Compilers
|
||||||
|
os.version 10.12.6
|
||||||
|
user.home /Users/wangtao
|
||||||
|
user.timezone Asia/Shanghai
|
||||||
|
java.awt.printerjob sun.lwawt.macosx.CPrinterJob
|
||||||
|
file.encoding UTF-8
|
||||||
|
java.specification.version 1.8
|
||||||
|
user.name wangtao
|
||||||
|
java.class.path .
|
||||||
|
java.vm.specification.version 1.8
|
||||||
|
sun.arch.data.model 64
|
||||||
|
java.home /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre
|
||||||
|
sun.java.command Test
|
||||||
|
java.specification.vendor Oracle Corporation
|
||||||
|
user.language en
|
||||||
|
awt.toolkit sun.lwawt.macosx.LWCToolkit
|
||||||
|
java.vm.info mixed mode
|
||||||
|
java.version 1.8.0_51
|
||||||
|
java.ext.dirs /Users/wangtao/Library/Java/Extensions:/Library/Java/JavaVirtualMachines/jdk1.
|
||||||
|
8.0_51.jdk/Contents/Home/jre/lib/ext:/Library/Java/Extensions:/Network/Library
|
||||||
|
/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java
|
||||||
|
sun.boot.class.path /Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/lib/resour
|
||||||
|
ces.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/li
|
||||||
|
b/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home/jre/l
|
||||||
|
ib/sunrsasign.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/H
|
||||||
|
ome/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Content
|
||||||
|
s/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Conte
|
||||||
|
nts/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jd
|
||||||
|
k/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_51.
|
||||||
|
jdk/Contents/Home/jre/classes
|
||||||
|
java.vendor Oracle Corporation
|
||||||
|
file.separator /
|
||||||
|
java.vendor.url.bug http://bugreport.sun.com/bugreport/
|
||||||
|
sun.cpu.endian little
|
||||||
|
sun.io.unicode.encoding UnicodeBig
|
||||||
|
sun.cpu.isalist
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
<div class="section" id="check-a-single-property">
|
||||||
|
<span id="check-a-single-property"></span><h3>Check a single property<a class="headerlink" href="#check-a-single-property" title="Permalink to this headline">¶</a></h3>
|
||||||
|
<p>Tip: <code class="docutils literal notranslate"><span class="pre">tab</span></code> auto-completion supported</p>
|
||||||
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ sysprop java.version
|
||||||
|
java.version=1.8.0_51
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
<div class="section" id="modify-a-single-property">
|
||||||
|
<span id="modify-a-single-property"></span><h3>Modify a single property<a class="headerlink" href="#modify-a-single-property" title="Permalink to this headline">¶</a></h3>
|
||||||
|
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ sysprop user.country
|
||||||
|
user.country=US
|
||||||
|
$ sysprop user.country CN
|
||||||
|
Successfully changed the system property.
|
||||||
|
user.country=CN
|
||||||
|
</pre></div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
</div>
|
||||||
|
|
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|
|
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|
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|
||||||
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<hr/>
|
||||||
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|
||||||
|
<div role="contentinfo">
|
||||||
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<p>
|
||||||
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© Copyright 2018, Alibaba Middleware Group, and contributors.
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|
</section>
|
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|
||||||
|
</div>
|
||||||
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<div class="github-fork-ribbon">
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<a href="https://github.com/alibaba/arthas">Fork me at GitHub</a>
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Reference in New Issue