RE: GC seems to kill process

["Boehm, Hans" <hans dot boehm at hp dot com>]

Does the system log say anything more useful?

This often means that a SIGSEGV was generated while SIGSEGV was blocked.
A semi-friendly kernel would at least put the PC value in the system
log, which might give us some chance at determining what's happening,
possibly by setting a breakpoint in a debugger just before this happens.

Hans



> -----Original Message-----
> From: java-owner@gcc.gnu.org [mailto:java-owner@gcc.gnu.org] 
> On Behalf Of Andi Vajda
> Sent: Wednesday, March 22, 2006 8:08 AM
> To: java@gcc.gnu.org
> Cc: Andi Vajda
> Subject: GC seems to kill process
> 
> 
> On my gentoo Linux system, I built gcc 4.1.0 configured with:
>    ../gcc-4.1.0/configure --enable-threads=posix 
> --prefix=/usr/local/gcc-4.1.0
>                           --enable-languages=c,c++,java
> 
> Whenever I run my compiled java code, as soon as the garbage 
> collector kicks in, the process is "Killed". The easiest way 
> for me to reproduce this is to simply invoke System.gc():
> 
> > python
> Python 2.4 (#2, Dec 20 2004, 17:30:16)
> [GCC 3.3.4 20040623 (Gentoo Linux 3.3.4-r1, ssp-3.3.2-2, 
> pie-8.7.6)] on linux2 Type "help", "copyright", "credits" or 
> "license" for more information.
> >>> import PyLucene
> >>> PyLucene.System.gc()
> >>> Killed
> 
> Each of the .jar files making up PyLucene's java code are 
> compiled with:
>    /usr/local/gcc-4.1.0/bin/gcj --encoding=UTF-8 -O2 -fPIC -c -o
>    release/lucene.o
>    
> lucene-java-2.0-rc1-dev-382522/build/lucene-core-2.0-rc1-dev-3
> 82522.jar
> 
> The final executable, _PyLucene.so, is produced with:
> 
> /usr/local/gcc-4.1.0/bin/g++ -shared -o release/_PyLucene.so 
> -O2 -fPIC -DPYLUCENE_VER="'2.0rc1-1'" 
> -DLUCENE_VER="'2.0-rc1-dev-382522'" 
> -Ilucene-java-2.0-rc1-dev-382522/build/classes/java
> -Ilucene-java-2.0-rc1-dev-382522/build/contrib/highlighter/cla
> sses/java
> -Ilucene-java-2.0-rc1-dev-382522/build/contrib/snowball/classes/java
> -Ilucene-java-2.0-rc1-dev-382522/build/contrib/analyzers/classes/java
> -Ilucene-java-2.0-rc1-dev-382522/build/contrib/regex/classes/java
> -Irelease/classes -I/usr/local/include/python2.4 
> -I/usr/local/gcc-4.1.0/include PyLucene_wrap.cxx 
> release/lucene.o release/snowball.o release/highlighter.o 
> release/analyzers.o release/regex.o release/regex.cpp.o 
> release/util.java.o release/util.cpp.o release/io.java.o 
> release/io.cpp.o release/store.java.o release/store.cpp.o 
> release/search.java.o release/search.cpp.o 
> release/queryParser.java.o release/queryParser.cpp.o 
> release/analysis.java.o release/analysis.cpp.o 
> release/highlight.java.o release/highlight.cpp.o 
> -L/usr/local/gcc-4.1.0/lib -lgcj
> 
> When I do the very same with gcc 3.4.4 it works fine.
> What's changed ?
> What am I doing wrong ?
> 
> Thanks !
> 
> Andi..
>