processes. Add end_generation hook for notification when the last
MPM child of a generation exits.
end_generation is implemented completely by core using the
child_status hook run by the MPM.
simple and mpmt_os2 MPMs don't currently run the child_status
hook, so neither hook is invoked with those MPMs.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1096609 13f79535-47bb-0310-9956-ffa450edef68
I added a few more fixes, and there are still more that might
need a doxygen expert.
PR: 48061
Submitted by: Brad Hards
Reviewed by: poirier
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@830527 13f79535-47bb-0310-9956-ffa450edef68
. ap_mpm_query() can return APR_EGENERAL if called too early (for debugging a module)
. some hypothetical module which implements the mpm-query hook can bypass the MPM
with APR_ENOTIMPL
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@760864 13f79535-47bb-0310-9956-ffa450edef68
of integral parts which share global variables, functions, and macros
with the rest of httpd.
Converted now:
prefork, worker, event, simple, WinNT*
*WinNT hasn't been built or tested, and relies on a hack to include the
WinNT mpm.h to disable Unixy MPM support routines in mpm_common.c
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@757853 13f79535-47bb-0310-9956-ffa450edef68
Using this basic framework, you can return SUSPENDED from an HTTP Handler,
and then register a callback that is invoked by the MPM at a later time.
This initial version only supports _timers_ as callbacks, but in the future I
would like to add things like wait for socket activity, on a socket specified by
the handler.
Once in a callback, It is then the responsibility of the callback fucntion
to finish the HTTP Request handling, but this alows you to do cool things like
a fully async proxy, COMET support, or even rate limiting.
To prove I'm not insane, I've inlcuded an example module, mod_dialup.
You can configure it like this:
<Location "/docs">
ModemStandard "V.32"
</Location>
And for static files inside that path, you will be rate limited to V.32 speeds,
aka 9.6 kilobits/second.
Does anyone besides Rüdiger read commit emails :-) ?
I know there are likely huge problems with this, but I would like to see how far
we can push the Event MPM, figure out what to do better, if there is anything,
and then really dive into the 3.0 development before ApacheCon.
* server/mpm/experimental/event/fdqueue.h:
(timer_event_t): New structure to hold timer events and callback functions.
* server/mpm/experimental/event/fdqueue.c
(ap_queue_empty): Modify to also look at Timer Ring.
(ap_queue_init): Initialize Timer Ring.
(ap_queue_push_timer): New function, pushes a timer event into the queue.
(ap_queue_pop_something): Renamed function, returns a timer event or
a socket/pool for a worker thread to run.
* server/mpm/experimental/event/event.c
(process_socket): If the connection is in SUSPENDED state, don't force it
into linger mode yet, the callback will have to take care of that.
(push_timer2worker): New shortcut function, pushes timer event into queue
for a worker to run.
(timer_free_ring): New global data structure to recycle memory used by
timer events.
(timer_ring): New global data structure to hold active timer events.
(g_timer_ring_mtx): Thread mutex to protect timer event data structures.
(ap_mpm_register_timed_callback): New Function, registers a callback to be
invoked by the MPM at a later time.
(listener_thread): Calculate our wakeup time based on the upcoming Event
Queue, and after pollset_poll runs, push any Timers that have passed
onto worker threads to run.
(worker_thread): Call new queue pop method, and if the Timer Event is
non-null, invoke the callback. Once the callback is done, push the
structure onto the timer_free_ring, to be recycled.
(child_main): Initialize new mutex and ring structures.
* server/config.c
(ap_invoke_handler): Allow SUSPENDED aa valid return code from handlers.
* modules/http/http_core.c
(ap_process_http_async_connection): Don't close the connection when in
SUSPENDED state.
* modules/http/http_request.c
(ap_process_request_after_handler): New function, body pulled from the old,
ap_process_async_request. Split to let handlers invoke this so they
don't need to know all of the details of finishing a request.
(ap_process_async_request): If the handler returns SUSPENDED, don't do
anything but return.
* include/ap_mmn.h: Bump MMN.
* include/ap_mpm.h
(ap_mpm_register_timed_callback): New function.
* include/httpd.h:
(SUSPENDED): New return code for handlers.
(request_rec::invoke_mtx): New mutex to protect callback invokcations
from being run before the original handler finishes running.
(conn_state_e): Add a suspended state.
* include/http_request.h
(ap_process_request_after_handler): New function to make it easier for
handlers to finish the HTTP Request.
* modules/test/config.m4: Add mod_dialup to build.
* modules/test/mod_dialup.c: New rate limiting module, requires the Event MPM
to work.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@697357 13f79535-47bb-0310-9956-ffa450edef68
Designed to minimize Apache's KeepAlive overhead.
This MPM depends on the current APR-trunk for new features added to
the apr_pollset interface. Currently the underlying operating
system must support KQueue or EPoll.
Status:
Should work as a drop in replacement for all non-ssl servers.
SSL Requests that use HTTP 1.1 Pipelining do not currently work.
Testing:
I have tested it with Linux 2.6, FreeBSD 5.2.1, and OS X 10.3.
Originally based on the patch by Greg Ames.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@105919 13f79535-47bb-0310-9956-ffa450edef68
define the function that should be used to accept on that
socket. Each MPM can define their own function to use for
the accept function with the MPM_ACCEPT_FUNC macro. This
also abstracts out all of the Unix accept error handling
logic, which has become out of synch across Unix MPMs.
The code flow is much easier now for different transports:
1) During pre-config, post-config or while parsing the config
file, add a socket to the ap_listeners list, making sure to
define an accept function at the same time.
2) MPMs find the correct listener, and call the accept function
that was defined in step 1.
3) That accept function returns a void pointer, which is passed
to the create_connection hook.
4) create_connection adds the correct low-level filters.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91916 13f79535-47bb-0310-9956-ffa450edef68
AP_MPMQ_MAX_REQUESTS_DAEMON macros. Better to do it now rather than later.
**WARNING** This will of course break the compile on any third-party MPMs
you might have floating around, but it's a really quick change to make.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91777 13f79535-47bb-0310-9956-ffa450edef68
added an AP_MPMQ_MAX_DAEMON_USED to refer to the highest
daemon index actually used in the scoreboard. I also
updated the pertinent calls.
Paul J. Reder
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@89604 13f79535-47bb-0310-9956-ffa450edef68
report if their threads are dynamic or static. Finally, this also
implements a new API, ap_show_mpm, which returns the MPM that was
required into the core.
We tried to make all of the MPMs report their threading capabilities
correctly, but each MPM expert should double check us.
Submitted by: Harrie Hazewinkel <harrie@covalent.net>
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88851 13f79535-47bb-0310-9956-ffa450edef68
query API can and should be extended in the future, but for now,
max_daemons, and threading or forking is a very good start.
Non-Unix MPM's do have the MPM query function, although there is no
garauntee that the information is perfect, please check.
Submitted by: Jon Travis <jtravis@covalent.net>
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88437 13f79535-47bb-0310-9956-ffa450edef68
*) remove DEFAULT_XFERLOG from main.c; it is never set/used
*) move ap_get_max_daemons() to ap_mpm.h
*) move DEFAULT_LISTENBACKLOG to mpm_common.h
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88103 13f79535-47bb-0310-9956-ffa450edef68
files need to specifically include stdio.h, or a particular apr_*.h
header.
*) Adjust callers of apr_create_process() to deal with the extra "const"
*) Add "const" to args of ap_os_create_privileged_process()
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@87080 13f79535-47bb-0310-9956-ffa450edef68
for CORE_EXPORT to AP_CORE_DECLARE (namespace protecting the wrapper)
and retitled API_EXPORT as AP_DECLARE and APR_EXPORT as APR_DECLARE.
All _VAR_ flavors changes to _DATA to be absolutely clear.
Thank you Greg, for the most obvious suggestion.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86609 13f79535-47bb-0310-9956-ffa450edef68
filtering beginning to work. There is a hack that has been repeated
through this patch, we morph a pipe into a socket, and put the socket
into the BUFF. Everytime we do that, we are working with a pipe from
a CGI, and we should be creating a pipe bucket and passing that bucket
back. Because we don't actually have pipe buckets yet, we are using this
hack. When we get pipe buckets, this will be fixed.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86136 13f79535-47bb-0310-9956-ffa450edef68
specification arguments to the ap_hooks.h declarations. As with
the APR_ and AP_ patches, API_VAR_EXPORT becomes API_EXPORT_VAR,
and MODULE_VAR_EXPORT becomes MODULE_EXPORT_VAR.
I will be happy to revert the inclusion of ap_config.h from
httpd.h if this bothers anyone. More individual modules need
to be patched if we do so.
The API_EXPORTs all moved into central storage in the ap_config.h
header. Without WIN32 or API_STATIC compile time declarations,
these macros remain no-ops.
This patch also moves the following data from http_main to http_config:
const char *ap_server_argv0;
const char *ap_server_root;
ap_array_header_t *ap_server_pre_read_config;
ap_array_header_t *ap_server_post_read_config;
ap_array_header_t *ap_server_config_defines;
And the following variables had already moved into ap_hooks.c:
ap_pool_t *g_pHookPool; (initialized now in http_config)
int g_bDebugHooks; (out of http_config)
const char *g_szCurrentHookName; (out of http_config)
The changes to http_main.c are in preparation for that module to
move out to a seperate .exe for win32. Other platforms will be
unaffected, outside of these changes.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85309 13f79535-47bb-0310-9956-ffa450edef68
