This minimal library is essentially a way to encapsulate the somewhat non-portable way in which a handler for the SIGHUP Unix signal can be installed. The following code
MainLoop ml = MainLoop.newInstance();
ml.installReloadHandler(onReload);
ml.run();
will install the onReload handler and then wait around until the process is told to exit by sending SIGTERM.
This library uses non-standard functionality, i.e. sun.misc.Signal, that might not be available in Java everywhere. Additionally the unit test assumes that there is a kill command that can be executed on the host system to signal the current process.
This software is released under the Apache License 2.0. More information in the file LICENSE distributed with this project.