Bug#516267: gcj-4.3: number of processors reported by Runtime.getRuntime().availableProcessors() is incorrect

[Folkert van Heusden <folkert@vanheusden.com>]

Package: gcj-4.3
Version: 4.3.2-2
Severity: normal


A java-program compiled using gcj returns different output for Runtime.getRuntime().availableProcessors() compared to one ran via the sun java jre.

folkert@belle:~/pos/work$ gcj --version
gcj (Debian 4.3.2-2) 4.3.2
Copyright (C) 2008 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

folkert@belle:~/pos/work$ java -version
java version "1.6.0_07"
Java(TM) SE Runtime Environment (build 1.6.0_07-b06)
Java HotSpot(TM) 64-Bit Server VM (build 10.0-b23, mixed mode)

folkert@belle:~/pos/work$ javac numprocs.java 
folkert@belle:~/pos/work$ java numprocs 
number of processors: 4

folkert@belle:~/pos/work$ gcj --main=numprocs -o numprocs numprocs.java 
folkert@belle:~/pos/work$ ./numprocs 
number of processors: 1

folkert@belle:~/pos/work$ grep Q9450 /proc/cpuinfo 
model name      : Intel(R) Core(TM)2 Quad  CPU   Q9450  @ 2.66GHz
model name      : Intel(R) Core(TM)2 Quad  CPU   Q9450  @ 2.66GHz
model name      : Intel(R) Core(TM)2 Quad  CPU   Q9450  @ 2.66GHz
model name      : Intel(R) Core(TM)2 Quad  CPU   Q9450  @ 2.66GHz

folkert@belle:~/pos/work$ cat numprocs.java 
class numprocs
{
        public static void main(String [] args)
        {
                System.out.println("number of processors: " + Runtime.getRuntime().availableProcessors());
        }
}


-- System Information:
Debian Release: 5.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-pps (SMP w/4 CPU cores)
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1)
Shell: /bin/sh linked to /bin/bash

Versions of packages gcj-4.3 depends on:
ii  gcc-4.3                4.3.2-1           The GNU C compiler
ii  gcj-4.3-base           4.3.2-2           The GNU Compiler Collection (gcj b
ii  gij-4.3                4.3.2-2           The GNU Java bytecode interpreter
ii  java-common            0.30              Base of all Java packages
ii  libc6                  2.7-16            GNU C Library: Shared libraries
ii  libc6-dev              2.7-16            GNU C Library: Development Librari
ii  libecj-java            3.3.0+0728-9      Eclipse Java compiler (library)
ii  libgcc1                1:4.3.2-1         GCC support library
ii  libgcj-bc              4.3.2-2           Link time only library for use wit
ii  libgcj9-0              4.3.2-2           Java runtime library for use with 
ii  libgcj9-dev            4.3.2-2           Java development headers for use w
ii  libgcj9-jar            4.3.2-2           Java runtime library for use with 
ii  libgmp3c2              2:4.2.2+dfsg-3    Multiprecision arithmetic library
ii  libmpfr1ldbl           2.3.1.dfsg.1-2    multiple precision floating-point 
ii  zlib1g                 1:1.2.3.3.dfsg-12 compression library - runtime

Versions of packages gcj-4.3 recommends:
pn  fastjar                       <none>     (no description available)
pn  libecj-java-gcj               <none>     (no description available)

Versions of packages gcj-4.3 suggests:
pn  java-gcj-compat-dev           <none>     (no description available)
pn  libgcj9-dbg                   <none>     (no description available)

-- no debconf information