Joseph,
1. I don't know by heart
2. Wt is waiting on the session that calls WServer::stop(). It is not
intended to be called from a Wt session, since stop() will only return
after all sessions are terminated, but it can't terminate because it's
an active session that calls it.
3. Run with Wt in valgrind without passing --gdb to Wt; press Ctrl-C
on the console and Wt will terminate cleanly (destroy all WApplciation
objects etc). Your report will contain the memory leaks you're looking
for.
BR,
Wim.
2012/11/5 Joseph VanAndel <vanan...@ucar.edu>:
> Using Wt 3.2.3 with Boost 1_41 on Scientific Linux 6.3, I've added a shutdown
> button that calls
>
> Wt::Wserver::instance()->stop()
>
> For testing purposes, I want to shutdown my Wt based application cleanly, so
> I can debug my application's memory use using Valgrind.
>
> However, Wt::WServer::waitForShutdown() sleeps forever:
>
> #if !defined(WIN32)
> if (!CatchSignals) {
> for(;;)
> sleep(0x1<<16);
> }
> #endif // WIN32
>
> I verified: CatchSignals==false
>
>
>
> Question 1)
> Is this code correct? - if CatchSignals == false, waitForShutdown() will
> never terminate.
>
> (apparently CatchSignals == false, if you pass the --gdb command line flag.)
>
> I ran my application again, without the --gdb flag. When I click my shutdown
> button, I see the message:
> WebController: shutdown: stopping sessions.
>
> but my application does not terminate.
>
> if I hit ^C, then I see the message:
> "WServer/wthttp: shutdown (signal = 2)"
>
> but the application still does not terminate.
>
> Question 2)
> How do I determine what Wt is waiting on? In particular, if I have to omit
> the --gdb flag, how do I used the debugger to look at the state of Wt?
>
> Question 3)
> Does anyone have any additional advice on cleanly terminating Wt applications?
>
>
>
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