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Posted to dev@httpd.apache.org by Rodent of Unusual Size <Ke...@Golux.Com> on 1999/06/21 05:45:11 UTC
[STATUS] (apache-apr) Sun Jun 20 23:45:11 EDT 1999
Apache Portable Runtime STATUS:
Last modified at [$Date: 1999/05/26 04:04:32 $]
Release:
0.1 : In pre-alpha development
Plan:
Everyone discuss and wrangle out the issues on new-httpd,
and commit changes as appropriate.
Showstoppers:
Committed Code Changes:
. docs/ directory created and initial function pre-spec added
. include/ directory created and start of APRStatus macros added
. pthreads/ directory tree created and populated with latest
work on Apache 1.3.5-dev port to pthreads inserted
Available Patches:
In progress:
Logging statements
We have some comments along the lines of "log this here".
Let's actually make those logs at some point.
Modules
Ensure thread safety. Does not include mod_proxy, yet.
Modules that don't work:
mod_digest.c --Anybody have a client that can transmit Digest
Auth?
Questionable modules: (Not tested.)
mod_log_agent.c -- Are we keeping these in 2.0 after Ken's
mod_log_referer.c -- mod_log_config changes. If yes, I'll test
-- them later.
Warning scrubbing
Get rid of all reasonable warnings with the strictest compiler flags,
to help weed out bugs
Everything
Needs patch:
With AIX 4.2, if MaxRequestsPerChild is low (e.g. 5) and
ThreadsPerChild is high (e.g. 64), the signal delivered to sigwait
gets dropped on the floor. The hypothesis is that the signals blocked
by pthread_sigmask aren't kept pending as they should be, so when
worker threads exit quickly and signal the sigwait thread before the
sigwait() call has been entered, the thread never gets the signal.
Open issues:
* Whether every APR routine should return a status code
* What the status codes should look like
* Bringing in the libap stuff
* Optimize Optimize Optimize
FEATURE SET FOR APR
Closed issues:
Accept Thread Serialization
Implemented as a blocking queue. 1 accept thread passes connection
to queue (size of queue is config directive, default # of threads).
All other threads block on queue.
Process/Thread hybridization
put monitor process back into place. Was removed for initial port,
it's time we make sure the server is running, and if not, start
it again.
Bringing this code up-to-date with the changes in the 1.3 branch.
It's now up-to-date as of the morning of Feb 6th, 1999.
Scoreboard
Design the scoreboard appropriately for a hybrid process web
server. This includes adding a tid field to the scoreboard.
Signal Handling
Investigate signal handling in Apache-pthreads. SIGUSR1 is not a
usable signal on Linux 2.0, because pthreads uses it to communicate
between threads. SIGWINCH was used for graceful restarts.
Process/thread management
Put (back) in the logic to manage the number of processes.
Managing threads per process other than with a configuration
constant is in doubt.
Accept Serialization across Processes
We now use one mutex per socket.
Timeouts. (only soft timeouts)
Keepalive and Initail Conection timeouts are done. Are there others?
CGI?
Modules that work:
mod_env.c mod_negotiation.c mod_autoindex.c mod_dir.c mod_cgi.c
mod_actions.c mod_speling.c mod_userdir.c mod_alias.c
mod_expires.c mod_headers.c mod_so.c mod_setenvif.c
mod_auth_anon.c mod_access.c mod_include.c mod_imap.c
mod_log_config.c mod_asis.c mod_rewrite.c mod_mime.c
mod_usertrack.c mod_unique_id.c mod_cern_meta.c
mod_auth.c (I'm assuming mod_auth* also work)
mod_mime_magic.c mod_status.c mod_mmap_static.c
Mod_proxy