Re: Threading and DBI in perl 5.8.0
I got this working finally. I originally grabbed the wrong patch for DBD::Oracle. The one that I ended up using was at: http:[EMAIL PROTECTED]/msg01291.html Thanks for the pointers on where to find what I needed Tim, and thanks to Gerald Richter for putting the patch together. Scott On Fri, Aug 09, 2002 at 06:16:08PM +, Scott Alexander wrote: I'm doing some testing with perl 5.8.0 and trying to use DBI. I know that the DBI and ithreads are listed as beta and not production ready, but the problem I think I'm having is that this fails to even make the clone. It never gets to using the dbi itself. The script is a Sendmail::Milter filter that I'm working on. It dies right after I make a connection to the sendmail engine. Thats why I'm pretty sure that this is caused by the cloning. The actual error is: Starting Sendmail::Milter 0.18 engine. Assertion tbl failed: file sv.c, line 8798 That's Perl_ptr_table_fetch(). A stack trace from the core file would be a big help.
Re: Threading and DBI in perl 5.8.0
On Fri, Aug 09, 2002 at 06:16:08PM +, Scott Alexander wrote: I'm doing some testing with perl 5.8.0 and trying to use DBI. I know that the DBI and ithreads are listed as beta and not production ready, but the problem I think I'm having is that this fails to even make the clone. It never gets to using the dbi itself. The script is a Sendmail::Milter filter that I'm working on. It dies right after I make a connection to the sendmail engine. Thats why I'm pretty sure that this is caused by the cloning. The actual error is: Starting Sendmail::Milter 0.18 engine. Assertion tbl failed: file sv.c, line 8798 That's Perl_ptr_table_fetch(). A stack trace from the core file would be a big help. at /home/mm/installs/lib/perl5/site_perl/5.8.0/i686-linux-thread-multi/DBI.pm line 425. That's inside the DBI's CLONE sub. Try commenting out this line in DBI.xs: DBIS-logfp = parent_dbis ? fp_dup(parent_dbis-logfp,'',0) : PerlIO_stderr(); Is this just something where I need to wait for the next version of DBI? Nope. At this stage I'm not using or testing or developing threads support for DBI. I'm just responding to any issues that crop up. Does DBD::Oracle not support this yet? See archives for some changes you can make to DBD::Oracle to improve things. The next release will be better. Tim. Thanks, Scott This is DBI 1.30 with DBD::Oracle 1.12. Platform is Redhat 7.3 perl -V is: Summary of my perl5 (revision 5.0 version 8 subversion 0) configuration: Platform: osname=linux, osvers=2.4.18-3, archname=i686-linux-thread-multi uname='linux scotts_lap 2.4.18-3 #1 thu apr 18 07:37:53 edt 2002 i686 unknown ' config_args='-Doptimize=-g -Dusethreads -Dprefix=/home/mm/installs -de' hint=recommended, useposix=true, d_sigaction=define usethreads=define use5005threads=undef useithreads=define usemultiplicity=define useperlio=define d_sfio=undef uselargefiles=define usesocks=undef use64bitint=undef use64bitall=undef uselongdouble=undef usemymalloc=n, bincompat5005=undef Compiler: cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBUGGING -fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm', optimize='-g', cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBUGGING -fno-strict-aliasing -I/usr/local/include -I/usr/include/gdbm' ccversion='', gccversion='2.96 2731 (Red Hat Linux 7.3 2.96-110)', gccosandvers='' intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234 d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12 ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8 alignbytes=4, prototype=define Linker and Libraries: ld='cc', ldflags =' -L/usr/local/lib' libpth=/usr/local/lib /lib /usr/lib libs=-lnsl -lndbm -lgdbm -ldl -lm -lpthread -lc -lcrypt -lutil perllibs=-lnsl -ldl -lm -lpthread -lc -lcrypt -lutil libc=/lib/libc-2.2.5.so, so=so, useshrplib=false, libperl=libperl.a gnulibc_version='2.2.5' Dynamic Linking: dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic' cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib' Characteristics of this binary (from libperl): Compile-time options: DEBUGGING MULTIPLICITY USE_ITHREADS USE_LARGE_FILES PERL_IMPLICIT_CONTEXT Built under linux Compiled at Jul 30 2002 10:58:24 INC: /home/mm/installs/lib/perl5/5.8.0/i686-linux-thread-multi /home/mm/installs/lib/perl5/5.8.0 /home/mm/installs/lib/perl5/site_perl/5.8.0/i686-linux-thread-multi /home/mm/installs/lib/perl5/site_perl/5.8.0 /home/mm/installs/lib/perl5/site_perl
Re: Threading and DBI in perl 5.8.0
Thanks for the response Tim. Commenting out this line appears to have fixed the first problem. It no longer dies when it clones the process. DBIS-logfp = parent_dbis ? fp_dup(parent_dbis-logfp,'',0) : PerlIO_stderr(); If you would still like to see the stack trace, I can uncomment the line and run the program again. I don't know how to make perl dump the core on a crash though, so the specific flag to pass or info about what I need to do to get stack trace would be appreciated. I'm still having trouble though with connecting to the database after each thread starts. Through the archive, I found the reference for the ora_init_mode needing to be OCI_THREADED and OCI_OBJECT or'd together. #define OCI_THREADED 0x01 /* the application is in threaded environment */ #define OCI_OBJECT0x02 /* the application is in object environment */ So I added ora_init_mode = 3 to my connect args. the basic premise of the code is this: disconnect the db start new thread connect to db inside of thread whatever I need to do. I turned tracing to 5 to see If I could get any help from it. It reports disconnecting connecting to db DBI 1.30-ithread dispatch trace level set to 5 - DBI-connect(dbi:Oracle:mfm, USERNAME, , HASH(0x8be139c)) - DBI-install_driver(Oracle) for linux perl=5.008 pid=25587 ruid=500 euid=500 install_driver: DBD::Oracle version 1.12 loaded from /home/mm/installs/lib/perl5/site_perl/5.8.0/i686-linux-thread-multi/DBD /Oracle.pm - install_driver= DBI::dr=HASH(0x8b6cb08) And then nothing more. When I do a connection before the threading, There is a huge amount of output. I also don't see the connections establish with netstat -atn. Scott On Mon, 12 Aug 2002 08:06:44 +0100 Tim Bunce [EMAIL PROTECTED] wrote: On Fri, Aug 09, 2002 at 06:16:08PM +, Scott Alexander wrote: I'm doing some testing with perl 5.8.0 and trying to use DBI. I know that the DBI and ithreads are listed as beta and not production ready, but the problem I think I'm having is that this fails to even make the clone. It never gets to using the dbi itself. The script is a Sendmail::Milter filter that I'm working on. It dies right after I make a connection to the sendmail engine. Thats why I'm pretty sure that this is caused by the cloning. The actual error is: Starting Sendmail::Milter 0.18 engine. Assertion tbl failed: file sv.c, line 8798 That's Perl_ptr_table_fetch(). A stack trace from the core file would be a big help. at /home/mm/installs/lib/perl5/site_perl/5.8.0/i686-linux-thread-multi /DBI.pm line 425. That's inside the DBI's CLONE sub. Try commenting out this line in DBI.xs: DBIS-logfp = parent_dbis ? fp_dup(parent_dbis-logfp,'',0) : PerlIO_stderr(); Is this just something where I need to wait for the next version of DBI? Nope. At this stage I'm not using or testing or developing threads support for DBI. I'm just responding to any issues that crop up. Does DBD::Oracle not support this yet? See archives for some changes you can make to DBD::Oracle to improve things. The next release will be better. Tim.
