Thanks. Who knows about kwsys? I only need this on a couple of platforms and don't mind doing it once for each.
Sent from my iPhone On Jun 27, 2012, at 14:09, David Cole <david.c...@kitware.com> wrote: > ctest uses the kwsys utilities to launch and monitor sub-processes. > > Theoretically, it goes like this, with variations in implementation > from platform to platform: > > After a call to a kwsysProcessCreate function (which spawns a process > asynchronously and returns control to ctest), we loop while calling > either a WaitForData or WaitForExit function, collecting stdout and > std err from the sub-process. Those wait functions may simply return a > value to us that says "hey, the timeout has expired" and ctest does > not even have to kill anything at that point. > > We hand the timeout value to the ProcessCreate function, so the system > can kill it for us if it knows how to do that. > > If not, we also have a kwsysProcessKill function that we can call if > necessary. > > So ... you can't use a sig trap reliably unless you know the > implementation details of the whole system under the hood and you know > for a fact that it's going to work on a given system. > > > HTH, > David > > > On Tue, Jun 26, 2012 at 11:25 PM, Leif Walsh <leif.wa...@gmail.com> wrote: >> I'd like to be able to get a backtrace when a test times out with ctest, so >> I can analyze where the test was stuck, if at all. >> >> I tried writing a fake test to tell me what signal ctest was using to kill a >> timing out test, but it couldn't. I imagine this is because it uses SIGKILL >> and I can't trap that. >> >> Is this the case? Is there a way to change what ctest uses (perhaps >> SIGALRM, SIGPROF, or SIGUSR1/SIGUSR2) so I can have my tests trap that, dump >> a backtrace, and then abort? If not, could I request this feature? >> >> -- >> Cheers, >> Leif >> >> -- >> >> Powered by www.kitware.com >> >> Visit other Kitware open-source projects at >> http://www.kitware.com/opensource/opensource.html >> >> Please keep messages on-topic and check the CMake FAQ at: >> http://www.cmake.org/Wiki/CMake_FAQ >> >> Follow this link to subscribe/unsubscribe: >> http://www.cmake.org/mailman/listinfo/cmake -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
