[Mono-dev] Socket.Accept() causes + Stopped
robertj at gmx.net
Wed Sep 28 15:02:34 EDT 2011
On 27.09.2011 15:28, DJL wrote:
> Hi everyone, first post on here.
> I'm getting a bizzarre behaviour and I'm hoping you guys can help.
> Sorry if this is the wrong place to post this.
> Short version:
> Calling Socket.Accept() is causing my application to freeze. A commandline
> "fg" resumes it.
It's not your application that freezes. You seem to be invoking
bash and some tool that sends SIGTSTP to itself. SIGTSTP is used
when an application/command requires a terminal for user input,
e.g. password input.
> Long version:
> Ok so I have a multi-threaded, Multi DLL application.
> Several of these DLLs are calling Socket.Accept() without issue.
> However the newest of these is causing the application to stop every time.
> The commandline shows "+ Stopped" and no other output.
> typing "fg" causes the application to continue as if nothing happened.
> Here is an excerpt from my code:
> Log(9, "pcsBash.Start()");
> Log(9, "<");
> stStdIn = pcsBash.StandardInput.BaseStream;
> stStdErr = pcsBash.StandardOutput.BaseStream;
> Log(9, "Accept()");
> sktStdOut = sktStdOutListen.Accept();
> Log(9, "<");
> stStdOut = new System.Net.Sockets.NetworkStream(sktStdOut, true);
> Log(9, "<");/
> Looking in the log when it stops (before typing fg) the last entry is
> (And yes the log is being flushed after each line).
> It is always in this same place, which leads me to suspect it is NOT one of
> the other threads causing this.
> Anyone have any ideas what could possibly cause this?
> Incidentally - the same code running on Windows in Microsoft's .Net does not
> do anything out of the ordinary - although I imagine if it did the symptoms
> might be quite different?
> Once again, thanks for any help you can give on this baffling issue
> System info:
> /#mono --version
> Mono JIT compiler version 2.8.2 (tarball Wed Feb 23 09:31:21 UTC 2011)
> Copyright (C) 2002-2010 Novell, Inc and Contributors. www.mono-project.com
> TLS: __thread
> SIGSEGV: altstack
> Notifications: epoll
> Architecture: amd64
> Disabled: none
> Misc: debugger softdebug
> LLVM: supported, not enabled.
> GC: Included Boehm (with typed GC and Parallel Mark)
> #uname -a
> Linux svn 184.108.40.206-0.7-desktop #1 SMP PREEMPT 2011-07-21 02:17:24 +0200
> x86_64 x86_64 x86_64 GNU/Linux
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