This is a really simple Java library for starting, stopping, and controlling
daemon processes written in Java on Unix/Linux. To allow your program
to run as a daemon, just link this library into your program.
The library does not use native code, nor does it require external
shell scripts. All OS-dependent functionality is implemented by executing
subprocesses, specifically sh, ps, and mkfifo.
The intended use is to make it easy to build deployable jar files for server or other long-running applications. For example, you might use this library as part of packaging your Java web application into a single jar file (using embedded Jetty): this library allows the application to run as a background process, handle runtime configuration commands, and to shut itself down cleanly. Once everything is set up you can then do cool things like the following:
# Start the application in the background
java -jar myApp.jar start
# Send a command (purgecache) to the running application
# (note that this is just an example: handling non-built-in
# commands is done by logic in your application)
java -jar myApp.jar purgecache
# Start (or restart) the application if it is not
# currently running (or has crashed)
java -jar myApp.jar poke
# Shut down the running application
java -jar myApp.jar shutdownDetailed information can be found at the wiki.
The library is open source distributed under the MIT license.
David Hovemeyer david.hovemeyer@gmail.com