tree a73bbc5ed7635ab34d02794b2fadb30cefa862b2
parent e604209cb930c5bc7e53f58625407b82e6899d0f
author Brad King <brad.king@kitware.com> 1400511231 -0400
committer Brad King <brad.king@kitware.com> 1400593715 -0400

KWSys Process: Workaround child kill trouble on Cygwin

When we kill a child we send SIGSTOP first so that we can traverse its
child processes recursively.  On unwinding the recursion we then send
SIGKILL.  Current Cygwin has trouble when both signals are sent in quick
succession by the parent process.  Add a usleep(1) after sending the
first signal to give up our time slice and give Cygwin a chance to
process the first signal before sending the second.