From:	vonbane AT my-deja DOT com
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: popen hanging eventually
Date:	Wed, 06 Dec 2000 15:34:39 GMT
Organization:	Deja.com - Before you buy.
Lines:	60
Message-ID:	<90lmag$b9b$1@nnrp1.deja.com>
References:	<Pine DOT SUN DOT 3 DOT 91 DOT 1001206095004 DOT 10098G-100000 AT is> <90ljch$8js$1 AT nnrp1 DOT deja DOT com>
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

pclose returns 4 on every loop after the first one that hangs like this
as well

In article <90ljch$8js$1 AT nnrp1 DOT deja DOT com>,
  vonbane AT my-deja DOT com wrote:
> the tmp file created by popen is empty when this happens.
>
> rsh is compiled by some other compiler.  it is a remote shell program
> that alows you to log on to a remote machine and run commands there.
in
> this instance i am telling it to basically spit out the contents of a
> file (binary) to stdout, which therefore is caught be popen.  i then
> write the results to a file locally.  basically i am copying a file
from
> one machine to the other.  as far as i know the rsh uses tcp/ip to do
> its networking.
>
> i post another reply earlier that this does not seem to happen when
> running in pure dos, only in windows so windows is somehow preventing
> this from happeneing to many times, or if i'm running into some kind
of
> limit.
>
> In article <Pine DOT SUN DOT 3 DOT 91 DOT 1001206095004 DOT 10098G-100000 AT is>,
>   djgpp AT delorie DOT com wrote:
> >
> > On Wed, 6 Dec 2000 vonbane AT my-deja DOT com wrote:
> >
> > > in dos mode it works fine, its only when running it from a dos
> window in
> > > windows when the problem occurs.  its usually been around 12-13
> loops
> > > before it fails to read anything from the pfp file pointer.
> >
> > Modify your program to pause when the problem happens (e.g., by
> > calling `getch').  Then open another DOS box, look at the temporary
> > file created by `popen', and tell what does it contain.
> >
> > (You can find the temporary file used by `popen' in the `tmp'
> > subdirectory of the DJGPP installation directory, by sorting the
files
> > there by their creation time.)
> >
> > Also, what kind of program is `rsh'?  Is it a Windows program, a
DJGPP
> > program, or compiled with some other compiler?  You say that it
works
> on
> > DOS, so I guess it's not a Windows program; in that case, what
network
> > library does it use to connect to the Unix host?
> >
>
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>


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