ID: 27412 User updated by: chris at seismo dot usbr dot gov dot spamfree Reported By: chris at seismo dot usbr dot gov dot spamfree Status: Open Bug Type: iPlanet related Operating System: IRIX 6.5 PHP Version: 4CVS, 5CVS (2004-02-27) New Comment:
Thanks for taking a look. Given Netscape's definitive statement that NSAPI does not support pthreads, it may be more luck than anything else if it appears to be working for some. More likely it's implementation dependent, as indicated by the bug reports where people just gave up on PHP - even with Solaris. The biggest risk could be not knowing what other problems pthreads are causing. A more robust approach might be to always use NES/iPlanet's thread API (NSAPI) - no matter what version or platform. Since NSAPI seems to already include a common thread API, does PHP really need to worry with those details? Both NSAPI and XP_UNIX should be defined in CFLAGS because TSRM.h includes nsapi.h. Just defining XP_UNIX or NSAPI in nsapi.c won't work. Previous Comments: ------------------------------------------------------------------------ [2004-02-27 10:27:31] [EMAIL PROTECTED] I will go through your changes. The problem is that even in iPlanet4 / NES3 the pthreads work correct on the most used platforms (e.g. Solaris). So changing could be a risk and needs a lot of testing. But for PHP5 we should think about it. One question: Why not update to a "supported" version of the NSAPI (e.g. SunONE webserver 6.1 ?). NES3 is really old... One comment: explicit defining of XP_UNIX is not needed in the current version because this is done by a #define in the sapi/nsapi/nsapi.c file - the problem is only if you change the TSRM to include nsapi.h here - you also need this there. But for that you can copy the code to TSRM. ------------------------------------------------------------------------ [2004-02-27 08:43:12] chris at seismo dot usbr dot gov dot spamfree Corrections/typos: (1) NSAPI.h should read TSRM.h (2) Fix for TSRM.c should read #elif defined(NSAPI) crit_enter(mutexp); /* returns void */ return 0; #elif defined(PI3WEB) (3) Also need to disable test for $pthreads_working in configure NSAPI section: enable_experimental_zts=yes # if test "$pthreads_working" != "yes"; then # { echo "configure: error: ZTS currently requires working POSIX threads. We were unable to verify that your system supports Pthreads." 1>&2; exit 1; } # fi (4) sapi/nsapi/config.m4 is semi-busted even without the NSAIP thread/pthread bug: change if test -d $PHP_NSAPI/include ; then NSAPI_INCLUDE=$PHP_NSAPI/include AC_MSG_RESULT(Netscape-Enterprise 3.x style) AC_CHECK_HEADERS([$NSAPI_INCLUDE/nsapi.h]) fi to if test -d $PHP_NSAPI/include ; then NSAPI_INCLUDE=$PHP_NSAPI/include AC_MSG_RESULT(Netscape-Enterprise 3.x style) AC_CHECK_HEADERS([$NSAPI_INCLUDE/nsapi.h]) NSAPI_INCLUDE="$NSAPI_INC_DIR -I$NSAPI_INCLUDE" dnl basic bug fix AC_DEFINE(NSAPI,1,[ ]) dnl partial pthread fix AC_DEFINE(XP_UNIX,1,[ ]) dnl partial pthread fix fi In configure, these lines would be change fi if test -d $PHP_NSAPI/plugins/include ; then test -n "$NSAPI_INCLUDE" && NSAPI_INC_DIR="-I$NSAPI_INCLUDE" to CFLAGS="$CFLAGS -DNSAPI -DXP_UNIX" NSAPI_INCLUDE="$NSAPI_INC_DIR -I$NSAPI_INCLUDE" fi if test -d $PHP_NSAPI/plugins/include ; then test -n "$NSAPI_INCLUDE" && NSAPI_INC_DIR="-I$NSAPI_INCLUDE" sapi/nsapi/config.m4 needs a more general fix though, including modifying the macro PHP_BUILD_THREAD_SAFE for NS3 and 4 to require enable_experimental_zts=yes, but not pthread. ------------------------------------------------------------------------ [2004-02-26 22:21:36] chris at seismo dot usbr dot gov dot spamfree Description: ------------ NSAPI with old versions of Netscape Enterprise Server (3 and 4) bombs when the server tries to load it. PHP-cli works fine. And if one removes the load statements from obj.conf, the server has no problem (and no PHP). On Irix 6.5, the startup error with PHP NSAPI is "PANIC pt_bootstrap() Couldn't INIT_THREADS - {0x0, 0x0}". The basic problem here is that NS/Iplanet versions 3 and 4 do not support pthreads whereas PHP requires them (sort of). See article: http://kb.netscape.com/NASApp/kb/Article?id=2861 Although NS/Iplanet has threads, they are not pthreads. To get a working NSAPI, one must use NSAPI threads instead. That's a big problem because TSRM wants pthreads. So the issue is simply how to build NSAPI without pthreads. It can be done with 3 simple fixes: (1) TSRM fixes; (2) use correct configure flags; (3) configure hacks. (Note that php-cli needs to be built separately) ##### FIRST TSRM.h mostly *has* support for NSAPI threads, it's just that the pthread ifdef's are reached first. Also, a couple of lines are missing. Here are the few simple code changes that are needed (sorry, I don't have CVS): In NSAPI.h change #elif defined(PTHREADS) # define THREAD_T pthread_t # define MUTEX_T pthread_mutex_t * #elif defined(PI3WEB) to #elif defined(PTHREADS) # define THREAD_T pthread_t # define MUTEX_T pthread_mutex_t * #elif defined(NSAPI) # define THREAD_T SYS_THREAD # define MUTEX_T CRITICAL #elif defined(PI3WEB) In TSRM.c, change #elif defined(NSAPI) return crit_enter(mutexp) #elif defined(PI3WEB) to #elif defined(NSAPI) crit_enter(mutexp); /* returns void */ return crit_enter(mutexp); #elif defined(PI3WEB) and also change #elif defined(NSAPI) return crit_exit(mutexp); #elif defined(PI3WEB) to #elif defined(NSAPI) crit_exit(mutexp); /* returns void */ return 0; #elif defined(PI3WEB) In nsapi.h, be sure to define XP_UNIX, or do it in configure. ##### SECOND Make sure the following flags are given to configure: --with-nsapi=/your/path/to/Netscape/3.5 --without-tsrm-pthreads --disable-cli --without-pear ##### THIRD Configure needs to be modified for several things to disable any use of pthreads and set CFLAGS for NSAPI threads: (1) For NS 3 and 4, don't use pthreads (2) Make sure CFLAGS="$CFLAGS -DNSAPI -DXP_UNIX" (3) Make sure -lpthread is never used (4) Make sure there's no pthread support in main/php_config.h A quick, if ugly hack to configure that does that is to change occurrences of if test "$cross_compiling" = yes"; then to if test "$cross_compiling" = yes -o "ugly" = "ugly" ; then A more elegant fix would change sapi/nsapi/config.m4 to reflect the logic: if (NS3 or 4) -> no pthreads, and define(NSAPI and XP_UNIX). Build and install following the instructions in the PHP manual for NSAPI, and that's it. This appears to have been a problem many others have had (e.g., bugs 4982, 13174, 10821, 4504, 6939, 9612, 2019, 10012, 25517, 11039, 11174, 12258, 5120, 23269, 6439, 11656, 4404, 14634, 6196, 18701, 12466, 16418, 15439, 16996, 5536, 8376). Hope this helps. Expected result: ---------------- ./ns-httpd -d config Netscape-Enterprise/3.5.1 B98.027.1047 startup: listening to http://our.web.server, port 80 as web Actual result: -------------- ./ns-httpd -d config Netscape-Enterprise/3.5.1 B98.027.1047 startup: listening to http://our.web.server, port 80 as web PANIC pt_bootstrap() Couldn't INIT_THREADS - {0x0, 0x0} (pt_bootstrap is from libpthreads.so on IRIX). ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=27412&edit=1