Thanks but the trick doesn't seem to help.
First the instruction seems wrong. With it, the resulting perl executable does
not even have useithreads defined.
Then I try
CFLAGS='-m64 -mtune=nocona' ./Configure -Dinstallusrbinperl -Dusethreads
-Duseithreads -Dprefix=/usr -des -A ccflags="-fPIC -m64 -mtune=nocona "
Now I get a perl with useithread and -mtune=nocona (versus -mtune=generic)
# perl -V
Summary of my perl5 (revision 5 version 16 subversion 1) configuration:
Platform:
osname=linux, osvers=2.6.32-131.12.1.el6.x86_64,
archname=x86_64-linux-thread-multi
uname='linux alcatraz6 2.6.32-131.12.1.el6.x86_64 #1 smp wed sep 21
08:12:51 pdt 2011 x86_64 x86_64 x86_64 gnulinux '
config_args='-Dinstallusrbinperl -Dusethreads -Duseithreads -Dprefix=/usr
-des -A ccflags=-fPIC -m64 -mtune=nocona '
hint=previous, useposix=true, d_sigaction=define
useithreads=define, usemultiplicity=define
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=define, use64bitall=define, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fPIC -fno-strict-aliasing
-pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64 -fPIC -m64 -mtune=nocona',
Then I install the perl build, build mod_perl and install. Verify I'm using the
new versions in apache. But still the script produces segfault consistently.
Did people ever get threads to work in mod_perl/apache/redhat enterprise linux
6? May someone send the "perl -V" output. This basic feature should work out of
box on any environment.
From: rsharm...@sapient.com
To: hackingb...@hotmail.com; modperl@perl.apache.org
Subject: RE: mod_perl always segfault on thread creation
Date: Tue, 21 Aug 2012 06:41:09 +0000
Hi,
You could try some options for configuring Perl given here:
http://perl.apache.org/docs/2.0/user/install/install.pod.orig
specially:
% CFLAGS='-m64 -mtune=nocona' ./Configure -des -A ccflags=-fPIC
Before doing a make.
Thanks,
Rommel.
From: hack bear [mailto:hackingb...@hotmail.com]
Sent: Tuesday, August 21, 2012 2:06 AM
To: modperl@perl.apache.org
Subject: mod_perl always segfault on thread creation
hi,
This is totally frustrating. My mod_perl script always causes segmentation
fault when it tries to create a thread. I searched the Web and this forum, but
there is still no definitive answers. My perl and mod_perl are of pretty recent
versions and I check for
the inclusion of useithreads config. I wrote a simple script to prove it:
use CGI;
use threads;
use Config;
use mod_perl;
our $LOGGER;
BEGIN {
$LOGGER = Apache2::ServerUtil->server->log;
$LOGGER->error("testhread starting (CGI version ".CGI->version.")");
}
my $q = CGI->new;
my $check = defined $Config{useithreads};
$LOGGER->error("useithread? $check");
my $v = mod_perl->VERSION;
$LOGGER->error("version $v");
my $thr = threads->create(sub { }); # comment out these two lines will work
$thr->join(); # already crashed at the line above
$q->header(-status => '200 OK');
It produces logs
Aug 20 13:07:50 (4216) [error] testhread starting (CGI version 3.51)
Aug 20 13:07:50 (4216) [error] useithread? 1
Aug 20 13:07:50 (4216) [error] version 2.000004
Aug 20 13:07:51 (4159) [notice] child pid 4216 exit signal Segmentation fault
(11)
Any way I can solve this?
Thanks!
(Perl -V)
Summary of my perl5 (revision 5 version 10 subversion 1) configuration:
Platform:
osname=linux, osvers=2.6.18-274.3.1.el5, archname=x86_64-linux-thread-multi
uname='linux hs20-bc2-5.build.redhat.com 2.6.18-274.3.1.el5 #1 smp fri aug
26 18:49:02 edt 2011 x86_64 x86_64 x86_64 gnulinux '
config_args='-des -Doptimize=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2
-fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic
-DDEBUGGING=-g -Dversion=5.10.1 -Dmyhostname=localhost
-Dperladmin=root@localhost -Dcc=gcc -Dcf_by=Red Hat,
Inc. -Dprefix=/usr -Dvendorprefix=/usr -Dsiteprefix=/usr/local
-Dsitelib=/usr/local/share/perl5 -Dsitearch=/usr/local/lib64/perl5
-Dprivlib=/usr/share/perl5 -Darchlib=/usr/lib64/perl5
-Dvendorlib=/usr/share/perl5/vendor_perl
-Dvendorarch=/usr/lib64/perl5/vendor_perl
-Dinc_version_list=5.10.0 -Darchname=x86_64-linux-thread-multi
-Dlibpth=/usr/local/lib64 /lib64 /usr/lib64 -Duseshrplib -Dusethreads
-Duseithreads -Duselargefiles -Dd_dosuid -Dd_semctl_semun -Di_db -Ui_ndbm
-Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio
-Dinstallusrbinperl=n -Ubincompat5005 -Uversiononly -Dpager=/usr/bin/less -isr
-Dd_gethostent_r_proto -Ud_endhostent_r_proto -Ud_sethostent_r_proto
-Ud_endprotoent_r_proto -Ud_setprotoent_r_proto -Ud_endservent_r_proto
-Ud_setservent_r_proto -Dscriptdir=/usr/bin'
hint=recommended, useposix=true, d_sigaction=define
useithreads=define, usemultiplicity=define
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=define, use64bitall=define, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe
-fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64',
optimize='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic',
cppflags='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe
-fstack-protector -I/usr/local/include'
ccversion='', gccversion='4.4.5 20110214 (Red Hat 4.4.5-6)', gccosandvers=''
intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize=8
alignbytes=8, prototype=define
Linker and Libraries:
ld='gcc', ldflags =' -fstack-protector'
libpth=/usr/local/lib64 /lib64 /usr/lib64
libs=-lresolv -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread -lc
perllibs=-lresolv -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
libc=, so=so, useshrplib=true, libperl=libperl.so
gnulibc_version='2.12'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E
-Wl,-rpath,/usr/lib64/perl5/CORE'
cccdlflags='-fPIC', lddlflags='-shared -O2 -g -pipe -Wall
-Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector
--param=ssp-buffer-size=4 -m64 -mtune=generic'
Characteristics of this binary (from libperl):
Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV
PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP USE_64_BIT_ALL
USE_64_BIT_INT USE_ITHREADS USE_LARGE_FILES
USE_PERLIO USE_REENTRANT_API
Built under linux
Compiled at Oct 4 2011 10:53:24
@INC:
/usr/local/lib64/perl5
/usr/local/share/perl5
/usr/lib64/perl5/vendor_perl
/usr/share/perl5/vendor_perl
/usr/lib64/perl5
/usr/share/perl5
