Re: file-format-problem?

[anuradha arora <anuradhampls yahoo com>]

i am using mutex, and dont think there is a problem
there.....since it is working fine with other things
that i am protecting.....
 
> --- Harring Figueiredo <harringf yahoo com> wrote:
> >  Wha tis the machanism to lock the file (fcntl ?
> > mutex ?)
> >
> > Harring
> > --- anuradha arora <anuradhampls yahoo com> wrote:
> > > hi,
> > > i cant seem to figure this out...
> > >
> > > i have a file which is written to (append mode)
> > using
> > > fwrite, from a c program, which spawns the
> gtk-gui
> > as
> > > a seperate thread. there is a gtk_timeout_add 
> > > function in the gui which reads the file using
> > fread.
> > > I do have locks to protect the file.
> > >
> > > The problem is that the text widget does not
> > accept
> > > and display the data read from the file, it
> > crashes
> > > with a segmentation fault.
> > >
> > > And when i open the file to have a look at the
> > > contents, i see unreadable symbols. 
> > >
> > > On the other hand, if i create the file myself
> > with an
> > > editer, with readable data, and disable the file
> > > creation through the program, that also works
> > fine. 
> > > Also passing my own string to the text widget at
> > the
> > > last stage when i have to display is also fine,
> no
> > > crash.
> > >
> > > I cant understand, is there some problem with
> the
> > way
> > > i am writing to the file? i write with fwrite
> and
> > put
> > > unsigned long data and read it with char (byte
> > > wise),after a certain no of unsigned long reads.
> > Why
> > > is there a problem in displaying that char data?
>
> > > Maybe this is more a general question, but also
> > why is
> > > the file not in a readable form when i open and
> > see
> > > it?
> > >
> > > thanks in advance,
> > > regards,
> > > anuradha.
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> >
> >
> > Harring Figueiredo
> >
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