Killing a java.lang.Process not killing subprocess()

Question

I have a GUI that has many buttons. Each button creates a Process (ProcessBuilder.start()) that send of a predetermined ClearCase command with pre-set arguments.

After calling ProcessBuilder.start(), I add the process to a list. When the program shuts down, I iterate through this list and call destroy() on each process. I'm using Runtime.getRuntime().addShutdownHook() to try to iterate through my list.

However, when I look in Windows Task Manager, I see that some conhost.exe and cleartool.exe processes are still alive. I suspect Process.destroy() is either not working or not propagating. Is there a way to completely clean up the program and kill all subprocesses when the user clicks X?

I tried `destroyForcibly()` at first but no change. I'm using a snapshot view just having the process run in the `view` dir. — RockManX77777, Mar 09 '17 at 13:29

score 2 · Answer 1 · answered Oct 25 '22 at 15:49

With Java 9, you can kill the subprocess of the main process reference.

LOGGER.info("Going to stop the process descendants (subprocesses) {}", this.process.descendants().collect(Collectors.toList()));
process.descendants().forEach((ProcessHandle d) -> {
    d.destroy();
});

LOGGER.info("Going to stop the process {}", this.process);
process.destroy();

score 0 · Answer 2 · edited May 23 '17 at 10:30

0

see: Killing a process using Java

But be aware that if the process that you invoke creates new sub-processes, those may not be terminated (see http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4770092).

edited May 23 '17 at 10:30

Community

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answered Mar 08 '17 at 22:50

guillaume girod-vitouchkina

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Killing a java.lang.Process not killing subprocess()

2 Answers2