Axel Simon <axel.si...@in.tum.de> writes: > On Mar 9, 2010, at 18:19, Andy Stewart wrote: > >> Axel Simon <axel.si...@in.tum.de> writes: >> >>> Is this with the current darcs version of Gtk2Hs? >> Yes. >> gtk2hs darcs version with GHC 6.12.1 on Ubuntu 9.10 > > Ok, so maybe there is still a bug with respect to finalizers in the threaded > RTS. However, I'm not > sure what happens when you do a 'forkProcess'. Are you following the advice > on > > http://www.haskell.org/ghc/docs/latest/html/libraries/unix-2.4.0.0/ > System-Posix-Process.html#v%3AforkProcess > > that tells you not to do anything but run 'executeFile' in the forked process? Default, first time startup program, it will run `socketMain` as GtkSocket process.
When you press `m`, it will create notebook and GtkSocket in `socketMain`, then got NativeWindowId from GtkSocket. Then it will use `forkProcess` create child process for run `plugMain` when you transform `NativeWindowId` as program argument. `forkProcess` and `executeFile` just startup program in child process, nothing else. Problem, this error not always occur, sometimes failed, sometime success. So i guess some place got *race condition*: It's okay if socket process have ready before plug process create GtkPlug. If socket process haven't ready when plug process create GtkPlug, GtkPlug can't found corresponding GtkSocket to plug-in (even it got GtkSocket's NativeWindowId), then will got `BadWindow` error. Above just my guess, i'm not sure. Do you know how to use gdb debug this program to get hint? I don't know how to use gdb debugging gtk2hs program. Thanks, -- Andy > > Axel. > >>> >>> Axel >>> >>> On Mar 9, 2010, at 12:51, Andy Stewart wrote: >>> >>>> Hi Axel, >>>> >>>> Look Embedded.hs under `demo/embedded`, default it use `initGUI` and >>>> everything is okay, but when i changed it to >>>> `unsafeInitGUIForThreadedRTS` with `-threaded` flags. I will got below X >>>> error: >>>> >>>> ------------------------------> X error start >>>> <------------------------------ >>>> (Embedded:12316): Gdk-WARNING **: GdkWindow 0x5000003 unexpectedly >>>> destroyed >>>> The program 'Embedded' received an X Window System error. >>>> This probably reflects a bug in the program. >>>> The error was 'BadWindow (invalid Window parameter)'. >>>> (Details: serial 180 error_code 3 request_code 18 minor_code 0) >>>> (Note to programmers: normally, X errors are reported asynchronously; >>>> that is, you will receive the error a while after causing it. >>>> To debug your program, run it with the --sync command line >>>> option to change this behavior. You can then get a meaningful >>>> backtrace from your debugger if you break on the gdk_x_error() >>>> function.) >>>> ------------------------------> X error end >>>> <------------------------------ >>>> >>>> And this error not always occur, sometimes looks running well. >>>> So you need test *many* times if you want to recur this error. >>>> >>>> I guess X window changes when i `forkProcess` plugMain, but i'm not >>>> sure. >>>> It's make me crazy. >>>> >>>> Any idea? >>>> >>>> -- Andy >>>> >>>> >>>> >>>> >>>> >>>> >>>> -------------------------------------------------------------------- >>>> -- >>>> -------- >>>> Download Intel® Parallel Studio Eval >>>> Try the new software tools for yourself. Speed compiling, find bugs >>>> proactively, and fine-tune applications for parallel performance. >>>> See why Intel Parallel Studio got high marks during beta. >>>> http://p.sf.net/sfu/intel-sw-dev >>>> _______________________________________________ >>>> Gtk2hs-devel mailing list >>>> Gtk2hs-devel@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/gtk2hs-devel ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Gtk2hs-devel mailing list Gtk2hs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gtk2hs-devel
