JCarder

JCarder is a software tool that is designed to help users identify potential deadlocks in concurrent multi-threaded Java programs, and it does this using a unique approach. Unlike many other tools that rely on static code analysis, JCarder works by instrumenting Java byte code dynamically. By doing so, it can easily detect cycles in the graph of acquired locks in the program.

One of the great things about JCarder is that it is very easy to use. All you need is a program that can be run in an ordinary JVM that is compliant with Java 5.0 or higher. You do not need any special JVMs or build procedures to use this tool.

JCarder is an open-source tool that has been released to the community by Enea under the GNU GPL v2 license. This means that it is free to use, and it can be modified and improved by developers who want to add new features or fix existing bugs.

To use JCarder, all you need to do is follow a few simple steps. First, you need to run your program together with the JCarder agent. This can be done by running the following command:

java -javaagent:jcarder.jar -jar yourprogram.jar

Next, you need to run the JCarder analyzer on the result. This can be done by running the following command:

java -jar jcarder.jar

Once the analysis is complete, you can visualize the information from the analysis step by running the following command:

dotty jcarder_result_0.dot

Overall, JCarder is a powerful and user-friendly software tool that can help developers easily identify potential deadlocks in concurrent multi-threaded Java programs. Its open-source nature also makes it a great choice for developers who want to modify and improve its functionality.