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Re: wait_for_file ??
From: |
Ben Abbott |
Subject: |
Re: wait_for_file ?? |
Date: |
Fri, 03 Sep 2010 08:21:35 -0400 |
On Sep 3, 2010, at 1:45 AM, Michael D Godfrey wrote:
> On 09/02/2010 04:57 AM, Ben Abbott wrote:
>> Pls try the attached.
>>
>> When not using Gnuplot, I've replaced the drawnow() with
>> drawnow("eps","/dev/null")
>>
> Here are my results:
>
> 1. When I run tests using ssh within our lab (everything is on 1Gb ethernet)
> I find
> no problems with the code as in your changesets using ssh.
>
> 2. When I run from my DSL line at home I get the following.
>
> First, here is an example of my modified __wait_for_file:
> function __wait_for_file__ (filename, delay)
>
> if (nargin < 2)
> ## FIXME -- is 1 second sufficient?
> delay = 1.0;
> endif
>
> max_iter = 10;
>
> status = 0;
> iter = 0;
> printf("dev/null used for %s delay: %d\n", filename, delay);
> if (nargin > 0 && numel (filename) > 0)
> while (file_is_missing (filename) && iter++ < max_iter)
> if (strcmp (get (gcf, "__backend__"), "gnuplot"))
> drawnow ();
> else
> drawnow ("eps", "/dev/null");
> ## drawnow ("eps", filename);
> endif
> printf("drawnow iter %d\n", iter);
> pause (delay / max_iter);
> rehash ()
> endwhile
> if (file_is_missing (filename))
> status = -1;
> endif
> else
> status = -1;
> print_usage ();
> return
> endif
>
> if (status < 0)
> error ("print:filedoesnotexist",
> "print.m: missing file '%s'.", filename);
> endif
>
> endfunction
> ====================================
> I put in printf statements and tried 2 drawnow commands.
> And, I tried 2 tests:
> 1. ssh from my home machine.
> 2. Run NX client in home machine so that all the processing in Octave is
> local to the server -- only the desktop is copied to my home machine.
>
> In these cases the wait loop with drawnow("eps", "/dev/null") always times
> out:
> octave:1> plot(1:20)
> octave:2> print ('gl2ps_t1x.pdf','-dpdf')
> dev/null used for /tmp/oct-xPh3WV.ps delay: 20
> dev/null used for /tmp/oct-FtfuzB.eps delay: 20
> drawnow iter 1
> drawnow iter 2
> drawnow iter 3
> drawnow iter 4
> drawnow iter 5
> drawnow iter 6
> drawnow iter 7
> drawnow iter 8
> drawnow iter 9
> drawnow iter 10
> error: print.m: missing file '/tmp/oct-FtfuzB.eps'.
> error: called from:
> error: /d/src/octave/hg/octave/scripts/plot/private/__wait_for_file__.m at
> line 59, column 5
> error: /d/src/octave/hg/octave/scripts/plot/private/__ghostscript__.m at
> line 117, column 3
> warning: print.m: No such file or directory, '/tmp/oct-FtfuzB.eps'.
> error: /d/src/octave/hg/octave/scripts/plot/__fltk_print__.m at line 142,
> column 14
> error: /d/src/octave/hg/octave/scripts/plot/print.m at line 332, column 1
> ===================================
> If I change to drawnow("eps", filename); I get using NX:
> octave:1> plot(1:20)
> octave:2> print ('gl2ps_t1x.pdf','-dpdf')
> filename used for /tmp/oct-3HNOzV.ps delay: 1
> filename used for /tmp/oct-nSyK73.eps delay: 1
> drawnow iter 1
> drawnow iter 2
> drawnow iter 3
> drawnow iter 4
> drawnow iter 5
> drawnow iter 6
> drawnow iter 7
> drawnow iter 8
> drawnow iter 9
> octave:3>
> ======================
> Using ssh:
> octave:1> plot(1:20)
> octave:2> print ('gl2ps_t1x.pdf','-dpdf')
> filename used for /tmp/oct-85Dd2k.ps delay: 1
> filename used for /tmp/oct-TuWU4Y.eps delay: 1
> drawnow iter 1
> octave:3>
> ===========================
>
> So, in this environment 2 things are required:
> 1. Use drawnow("eps", filename);
> 2. Increase delay to 2.0 or 4.0, since using 1.0 results in
> almost hitting the timeout.
>
> If you decide to use this, it would be good to flag it as ##FIXME##
> -- find out how to ensure the correct sequencing of writing the eps
> before gs tries to read it. --
>
> Michael
The approach in 1, has a problem. I'd intended that the __wait_for_file__ to be
used when calling fig2dev, pstoedit (whose input is eps, so that's ok), and
when appending pages which may be ps or pdf.
Thus, using `drawnow("eps", filename)' won't work since the format may not be
"eps", and we'd over-write the file we're waiting for.
Ben
- Re: wait_for_file ??, (continued)
- Message not available
- Message not available
- Re: wait_for_file ??, Michael D Godfrey, 2010/09/03
- Re: wait_for_file ??, Shai Ayal, 2010/09/03
- Re: wait_for_file ??, Michael D Godfrey, 2010/09/03
- Re: wait_for_file ??, Michael D Godfrey, 2010/09/03
- Re: wait_for_file ??, Shai Ayal, 2010/09/03
- Re: wait_for_file ??, Olaf Till, 2010/09/03
- Re: wait_for_file ??, Michael D Godfrey, 2010/09/03
- Re: wait_for_file ??, Michael D Godfrey, 2010/09/03
- Re: wait_for_file ??, Michael D Godfrey, 2010/09/03
- Re: wait_for_file ??,
Ben Abbott <=
- Re: wait_for_file ??, Michael D Godfrey, 2010/09/03
- Re: wait_for_file ??, John W. Eaton, 2010/09/03
- Re: wait_for_file ??, Michael D Godfrey, 2010/09/03
- Re: wait_for_file ??, Michael D Godfrey, 2010/09/03
- Re: wait_for_file ??, bpabbott, 2010/09/03
- Re: wait_for_file ??, bpabbott, 2010/09/03
- Re: wait_for_file ??, Michael D Godfrey, 2010/09/03
- Re: wait_for_file ??, Ben Abbott, 2010/09/03
- Re: wait_for_file ??, Michael D Godfrey, 2010/09/03
- Re: wait_for_file ??, Ben Abbott, 2010/09/03