Android code JIT friendliness detection tool

During the weekend, I wrote a tool to detect the JIT friendliness of Android code, named droid jitchecker. I hope it can help you quickly find bad code and correct it in time.

Noun interpretation

what is it?

Premise preparation

install

Installing the jitwatch component

Get code

git clone git@github.com :AdoptOpenJDK/jitwatch. git

compile

Enter the above repo directory and use one of the following three methods

ant

ant clean compile test run

Maven

mvn clean compile test exec:java

Gradle

gradlew clean build run

to configure

Get the code of this repo and open config INI file modification

Modification Description

How to use

It is easy to use. Open the terminal and execute the following statement

ruby jitChecker. rb your_ android_ project jarTask

Note: jartask is a task to compile the java files of the project into jar packages, which can be executed by/ View gradlew tasks, and then select the task that starts with jar.

View results

A typical content example

MD4. mdfour64

How to solve

Contribution code

Any helpful suggestions are welcome.

The following code contributions are welcome

Beautify the result display page (HTML, CSS)

problem

Q: do methods with large bytes have to be modified? Can they be JIT compiled after modification

A: it is recommended to modify the method with large bytes, which is not mandatory. After modification, it may not be able to JIT compile, because JIT optimization does not mean that JIT compiles the method. Other factors are required, such as the call frequency of the method. So this is something you love and I want.

Why ruby

A: I'm very tangled with idea because I'm not sure what language to use, especially between Python and ruby. I asked many students for this. Finally, I decided to use ruby. I don't like Python's forced alignment and I really like Ruby's string template. Ruby is very simple and user-friendly. I'm sure you'll like it.

Source code

DroidJitChecker@Github

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