[Pkg-octave-devel] Bug#550823: octave3.2: Race condition with multiple Octave instances when creating M-files on the fly
Package: octave3.2
Version: 3.2.3-1
Severity: normal
The problem can be reproduced with the following example, composed of the following
two files:
* foo1.m which does nothing special
* foo2.m which creates foo3.m on the fly, and runs it.
----------------foo1.m------------------
1+1
----------------------------------------
----------------foo2.m------------------
system("echo 1+2 > foo3.m");
foo3;
----------------------------------------
The following shell command will fail most of time (but not always) on my machine:
$ rm -f foo3.m && octave foo1.m && octave foo2.m
When it fails, I get:
error: `foo3' undefined near line 2 column 1
error: called from:
error: foo2.m at line 2, column 1
This has to do with multiple instances of Octave since the following always works
fine:
$ rm -f foo3.m && octave foo2.m
Introducing a long-enough time delay between the two instances of Octave also
solves the problem:
$ rm -f foo3.m && octave foo1.m && sleep 1 && octave foo2.m
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.30-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages octave3.2 depends on:
ii libamd2.2.0 1:3.4.0-1 approximate minimum degree orderin
ii libarpack2 2.1+parpack96.dfsg-2+b1 Fortran77 subroutines to solve lar
ii libatlas3gf-base 3.6.0-24 Automatically Tuned Linear Algebra
ii libblas3gf [libb 1.2-2 Basic Linear Algebra Subroutines 3
ii libbz2-1.0 1.0.5-3 high-quality block-sorting file co
ii libc6 2.9-25 GNU C Library: Shared libraries
ii libcamd2.2.0 1:3.4.0-1 symmetric approximate minimum degr
ii libccolamd2.7.1 1:3.4.0-1 constrained column approximate lib
ii libcholmod1.7.1 1:3.4.0-1 sparse Cholesky factorization libr
ii libcolamd2.7.1 1:3.4.0-1 column approximate minimum degree
ii libcurl3-gnutls 7.19.5-1.1 Multi-protocol file transfer libra
ii libcxsparse2.2.3 1:3.4.0-1 concise sparse matrix library (com
ii libfftw3-3 3.2.1-2.1 library for computing Fast Fourier
ii libfltk1.1 1.1.9-6 Fast Light Toolkit - shared librar
ii libfreetype6 2.3.9-5 FreeType 2 font engine, shared lib
ii libftgl2 2.1.3~rc5-2 library to render text in OpenGL u
ii libgcc1 1:4.4.1-4 GCC support library
ii libgfortran3 4.4.1-4 Runtime library for GNU Fortran ap
ii libgl1-mesa-glx 7.5.1-1 A free implementation of the OpenG
ii libglpk0 4.38-1 linear programming kit with intege
ii libglu1-mesa [li 7.5.1-1 The OpenGL utility library (GLU)
ii libgomp1 4.4.1-4 GCC OpenMP (GOMP) support library
ii libgraphicsmagic 1.3.5-5.1 format-independent image processin
ii libgraphicsmagic 1.3.5-5.1 format-independent image processin
ii libhdf5-serial-1 1.8.3-2.1 Hierarchical Data Format 5 (HDF5)
ii libice6 2:1.0.5-1 X11 Inter-Client Exchange library
ii libjasper1 1.900.1-6 The JasPer JPEG-2000 runtime libra
ii libjpeg62 6b-15 The Independent JPEG Group's JPEG
ii liblapack3gf [li 3.2.1-1 library of linear algebra routines
ii liblcms1 1.18.dfsg-1 Color management library
ii libncurses5 5.7+20090803-2 shared libraries for terminal hand
ii libpcre3 7.8-2 Perl 5 Compatible Regular Expressi
ii libpng12-0 1.2.39-1 PNG library - runtime
ii libqhull5 2009.1-1 calculate convex hulls and related
ii libqrupdate1 1.0.1-1 Fast updates of QR and Cholesky de
ii libreadline6 6.0-5 GNU readline and history libraries
ii libsm6 2:1.1.1-1 X11 Session Management library
ii libstdc++6 4.4.1-4 The GNU Standard C++ Library v3
ii libtiff4 3.9.1-1 Tag Image File Format (TIFF) libra
ii libumfpack5.4.0 1:3.4.0-1 sparse LU factorization library
ii libwmf0.2-7 0.2.8.4-6.1 Windows metafile conversion librar
ii libx11-6 2:1.2.2-1 X11 client-side library
ii libxext6 2:1.0.4-1 X11 miscellaneous extension librar
ii libxml2 2.7.5.dfsg-1 GNOME XML library
ii octave3.2-common 3.2.3-1 architecture-independent files for
ii texinfo 4.13a.dfsg.1-5 Documentation system for on-line i
ii zlib1g 1:1.2.3.3.dfsg-15 compression library - runtime
Versions of packages octave3.2 recommends:
ii gnuplot 4.2.6-1 A command-line driven interactive
ii libatlas3gf-base 3.6.0-24 Automatically Tuned Linear Algebra
Versions of packages octave3.2 suggests:
ii octave3.2-doc 3.2.2-2 PDF documentation on the GNU Octav
ii octave3.2-emacsen 3.2.3-1 Emacs support for the GNU Octave l
ii octave3.2-headers 3.2.3-1 header files for the GNU Octave la
ii octave3.2-htmldoc 3.2.2-2 HTML documentation on the GNU Octa
ii octave3.2-info 3.2.2-2 GNU Info documentation on the GNU
-- no debconf information
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