Pull out the "extended" pod functions used by event and worker to core, since it will be used by Simple and Lean and likely other MPMs. Avoid duplication.

Fix usage of MOD_* variables for MPM modules r1385216 broke building of mpm event with serf support. To fix, * introduce APACHE_MPMPATH_INIT/FINISH similar to APACHE_MODPATH_INIT/FINISH to create modules.mk and add MOD_* vars to it. * change APACHE_MPM_MODULE to only append to modules.mk, not overwrite * add APACHE_MPMPATH_INIT/FINISH to all MPMs

Revert Paul's lock free circular queue changes done on MPM-event. The changes have been moved to branches/mpm-event-optimization. This puts trunk's MPM-event back to the state of 2.4.x, except for serf support. The following commits are reverted: ------------------------------------------------------------------------ r1203404 | trawick | 2011-11-17 23:48:35 +0100 event no longer requires APR_POLLSET_THREADSAFE, or any other non-standard feature (all but OS/2 have APR_POLLSET_WAKEABLE) config-foo: don't require thread-safe pollset in order to build event event.c: don't stress APR_ENOTIMPL in apr_pollset_create errors; just give the standard "check system or user limits" message ------------------------------------------------------------------------ r1203858 | trawick | 2011-11-18 22:39:33 +0100 follow up to r1202257 -- perform normal wakeup processing when APR_EINTR is seen from apr_pollset_poll(), with expectation that it was triggered by apr_pollset_wakeup() ------------------------------------------------------------------------ r1202395 | trawick | 2011-11-15 20:38:31 +0100 spellcheck r1202258 ------------------------------------------------------------------------ r1202329 | pquerna | 2011-11-15 18:47:33 +0100 Calculate the power of two size of the buffer before allocating it. Spotted by: Rüdiger Plüm ------------------------------------------------------------------------ r1202259 | pquerna | 2011-11-15 16:52:59 +0100 Use apr_pollset_wakeup to ensure that the listener thread will process most enqueue'd events quickly ------------------------------------------------------------------------ r1202258 | pquerna | 2011-11-15 16:52:00 +0100 Because the pollset is now only mutated from the event thread, we no longer need the APR_POLLSET_THREADSAFE flag for the event_pollset ------------------------------------------------------------------------ r1202257 | pquerna | 2011-11-15 16:51:03 +0100 Create a new lock free circular queue, and use it in the EventMPM to remove the timeout mutex that was wrapping both timeout queue operations and pollset operations. ------------------------------------------------------------------------ r1202256 | pquerna | 2011-11-15 16:50:09 +0100 Instead of disabling the listening sockets from the pollset when under load, just stop calling the accept call, but leave the sockets in the pollset.

Create a new lock free circular queue, and use it in the EventMPM to remove the timeout mutex that was wrapping both timeout queue operations and pollset operations.

Allow to specify module specific custom linker flags via the MOD_XXX_LDADD variables. Use APR_ADDTO instead of APR_SETVAR or direct variable assignment. This is especially useful when building mod_lua or mod_deflate against a lua resp. libz which are installed in non-standard locations. One can add "-R ..." to MOD_LUA_LDADD and MOD_DEFLATE_LDADD before configure to fix the RPATH/RUNPATH of those modules.

Fix MPM event/libserf build problems: If libserf was installed during build, MPM event was picking up the headers but not linking with libserf, causing unresolved symbol errors. Now build MPM event with or without serf support depending on --with-serf being specified or not.

Change the configure-based MPM build mechanism to support building an MPM as a shared shared or dynamic module, primarily using the APACHE_MPM_MODULE() function. --enable-mpms-shared now builds/installs the MPMs as dynamic modules. (But no LoadModule directives are added.)

more configure-time support for dynamically loadable MPMs: . axe --with-mpm="shared" hack, replace with --enable-mpms-shared={all|list} . replace singular MPM_NAME with access to the list of enabled MPMs . replace singular MPM_SUBDIR with list MPM_SUBDIRS . enable OS/2 MPM in same manner as others with configure support instead of hard-coding in configure.in Current state: MPMs are built as static archives (but not linked to httpd) with --enable-mpms-shared, so they still have to be built with apxs to load dynamically.

Ensure all mpm's configure at config3