non "/~*" requests


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(and optimizations) as ap_getword()


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If the worker thread synchronization is working properly, it's not
necessary to set these fields to NULL after removing an element from
the queue, and it's IMO more important to have a shorter code path
leading up to the mutex_unlock.  I left in support for NULLing the
fields when debugging, though.


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configuration, rearrange the code to keep it from allocating a few
pages worth of local variables on the stack on requests that don't
use imagemaps


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Also, broadcast a signal after we set the terminate flag on the worker stack.


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logic from the file descriptor queue, now that we can rely on the
idle worker reference count to keep the listener from trying to
push connections into a full queue
Reviewed by:	Aaron Bannert (concept)


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- Add a "state" variable to the worker_wakeup_info struct. This is
  used to make sure that we act on the correct signal, and to know when
  to shut down a worker thread.
- Fix the call when the worker thread waits for a connection to use
  the new state variable and use mutexes around the cond_wait() call.
- Change the interrupt_all() call to set the WORKER_TERMINATED state.
- Add two AP_DEBUG_ASSERT() to make sure that we aren't waking up
  a worker thread before it is idle.


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the signal inside of a mutex.


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- We don't need the listener_blocked flag, just check if the element
  we're adding makes the stack non-empty.
- When we are terminated, return APR_EOF; catch this event in the
  worker thread and the listener thread.
- When shutting down, always signal a potential listener thread.
- Wait to signal the listener thread until after we add the worker
  element to the stack.


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ap_queue_info_set_idle() more than once at a time per worker thread.
This fixes an assert coredump.

Submitted by:	Aaron Bannert
Reviewed by:	Brian Pane


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is associated with that condition variable. This isn't necessary
for Solaris, but for Posix it is.


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Prep for taking mpm_winnt to multi-process...


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Submitted by:	Thom May <thom@planetarytramp.net>


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Submitted by: Phil Forrest <forrest@physics.auburn.edu>


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fast_redirect, the filter would still point at the subreq - rather than
the original r.  So, we must update any filters pointing at rr to be r.

This would cause lots of problems with mod_include with mod_dir requests
such as seen in PR 7966.  mod_include would be unsetting the headers_out
of rr instead of r.  But, we disassociate rr->headers_out and r->headers_out.
Therefore, the C-L header in r->headers_out would remain - even though it
bears no relation to what we will be outputting - causing problems.

This also now permits chunked-encoding of mod_dir/mod_include requests
which could never happen before and fixes the content-length problem
seen in PR 7966.

As hinted at in PR 7966, there is a race condition - if for some reason
the server stalls reading an included file (or even better, placing a
sleep in the cgi-bin script!), the invalid C-L may get propogated to the
client.

(Note that internal_internal_redirect has this same code fragment.)

PR: 7966


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The advantage of doing this is that it enables us to guarantee that the
number of ptrans pools in existence at once is no greater than the
number of worker threads, and that we'll never have to delete ptrans
pools.


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for the error-case return (thanks to Justin for suggesting the
latter)


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the mutex-protected critical path of ap_queue_pop()


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error instead.

Obtained from:  Justin Erenkrantz
Submitted by:	Aaron Bannert


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there is an available worker thread. This prevents queued
connections from starving for processing time while long-running
connections were hogging all the available threads.


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the listener thread from accept()ing more connections than there are
available workers. This prevents long-running requests from starving
connections that have been accepted but not yet processed.

The queue_info is a simple counter, mutex, and condition variable. Only
the listener thread blocks on the condition, and only when there are no
idle workers. In the fast path there is a mutex lock, integer decrement,
and and unlock (among a few conditionals). The worker threads each notify
the queue_info when they are about to block on the normal worker_queue
waiting for some connection to process, which wakes up any sleeping
listener thread to go perform another accept() in parallel.


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  After review and testing against all of the PSDK examples (see
  http://www.apache.org/~wrowe/ for commentary on building the
  examples and making them work) ... this disable-optimization
  should no longer be required.


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dereference it in the for(...) loop.  Attempting to dereference a NULL pointer
was causing a fault if there were no aliases found.


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implementation in APR.
PR:
Obtained from:
Submitted by:	Eduardo Garcia Lopez <egarcia@stream18.com>
Reviewed by:


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we need to copy libtool and instdso.sh verbatim, and we
need to edit config_vars.mk and apxs

still broken: "httpd -l" as invoked by apxs can fail since
support libraries (apr, aprutil, etc.) are probably not
findable


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