Terminate descendents of a supervisor process.

Terminate descendents of a process.

reap signals subprocesses of a process identified by PID. If the process called PR_SET_CHILD_SUBREAPER, background and daemonized subprocesses will also be terminated.

Note: terminating subprocesses using this method is subject to race conditions:

• new processes may have been forked

• processes may have exited and unrelated processes assigned the PID

• processes may ignore some signals

• processes may not immediately exit after signalling