github-forks
/
arthas
mirror of https://github.com/alibaba/arthas.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
master
gh-pages
3.x
grpc-service
killercoda
dependabot/npm_and_yarn/web-ui/arthasWebConsole/vite-2.9.16
channel-server
object-view-model
oneagent
improve-http-api
http-api
4.0.x
arthas-all-3.4.3
arthas-all-3.4.2
arthas-all-3.4.1
arthas-all-3.4.0
arthas-all-3.3.9
arthas-all-3.3.8
arthas-all-3.3.7
arthas-all-3.3.6
arthas-all-3.3.5
arthas-all-3.3.3
arthas-all-3.3.2
arthas-all-3.3.1
arthas-all-3.3.0
arthas-all-3.2.0
arthas-all-3.1.8
arthas-all-3.1.7
arthas-all-3.1.6
arthas-all-3.1.5
arthas-all-3.1.4
arthas-all-3.1.3
arthas-all-3.1.2
arthas-all-3.1.1
3.1.0
arthas-all-3.0.5
arthas-all-3.0.4
arthas-all-3.0.3
arthas-all-3.0.0-RC
3.0.0-SNAPSHOT
arthas-all-3.3.4
arthas-all-3.4.4
arthas-all-3.4.5
arthas-all-3.4.6
arthas-all-3.4.7
arthas-all-3.4.8
arthas-all-3.5.0
arthas-all-3.5.1
arthas-all-3.5.2
arthas-all-3.5.3
arthas-all-3.5.4
arthas-all-3.5.5
arthas-all-3.5.6
arthas-all-3.6.0
arthas-all-3.6.1
arthas-all-3.6.2
arthas-all-3.6.3
arthas-all-3.6.4
arthas-all-3.6.5
arthas-all-3.6.6
arthas-all-3.6.7
arthas-all-3.6.8
arthas-all-3.6.9
arthas-all-3.7.0
arthas-all-3.7.1
arthas-all-3.7.2
arthas-all-3.7.3
arthas-all-4.0.0
arthas-all-4.0.1
arthas-all-4.0.2
arthas-all-4.0.3
arthas-all-4.0.4
doc-3.0.4-20181112
doc-3.0.4-20181128
doc-3.0.5-20190213
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '3fcb654a35'
${ noResults }
arthas/site/docs/en/doc/mc.md

1.1 KiB
Raw Blame History

mc

mc-retransform online tutorial

Usage

::: tip Memory compiler, compiles .java files into .class files in memory. :::

mc /tmp/Test.java

The classloader can be specified with the -c option:

mc -c 327a647b /tmp/Test.java

You can also specify the ClassLoader with the --classLoaderClass option:

$ mc --classLoaderClass org.springframework.boot.loader.LaunchedURLClassLoader /tmp/UserController.java -d /tmp
Memory compiler output:
/tmp/com/example/demo/arthas/user/UserController.class
Affect(row-cnt:1) cost in 346 ms

The output directory can be specified with the -d option:

mc -d /tmp/output /tmp/ClassA.java /tmp/ClassB.java

After compiling the .class file, you can use the retransform command to re-define the loaded classes in JVM.

::: warning Note that the mc command may fail. If the compilation fails, the .class file can be compiled locally and uploaded to the server. Refer to the retransform command description for details. :::