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ap_sb_handle_t when re-entering event's process_socket().



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re-increment the number idlers if it went under or to zero.  We can avoid
this by switching to a compare-and-swap scheme.



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*const* strings (must not change after being inserted), make it explicit.



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Follow up to r1713043.


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give more feedback to systemd during a reload.

* modules/arch/unix/mod_systemd.c (systemd_pre_config): New
  function; tell systemd the service is reloading here.
  (systemd_pre_mpm): Don't set ap_extended_status here, do nothing
  if ExtendedStatus is off.
  (register_hooks): Register pre_config hook.


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Added Updates to Extra files referencing Spanish translation for manual/misc/password_encryptions.xml.es r1802066

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                flushpackets and flushwait params

This change was requested on the development mailing
list in order to fill another gap between mod_fcgi
and mod_proxy_fcgi, namely the -flush funtionality.

The more evolved core trunk code would not need this
feature becuse of the non-blocking writes, but it
is be needed in 2.4.x.



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Including the module source is a dirty hack, but maybe the direct way is
best for now. More functional tests are still TODO.

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in child.c.

This definition has been added in https://svn.apache.org/r88498 — perhaps,
because not every versions of SDK contained it at that time.

But since then, the macro has been available starting from Windows 2000
(https://msdn.microsoft.com/en-us/library/windows/hardware/ff542043),
and any available version of Windows SDK now should also contain it.


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declarations of the structures and functions to access the completion
contexts reside in a header file.

This no longer holds, as all the necessary functions and structures are
located in the single .c file (child.c).


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represent a queue of the completion contexts.

Starting from r1801655, the "queue" isn't really a queue, as all the
access happens with a FIFO order. So, instead of that, call it a "pool
of completion contexts", adjust names of all relevant variables and
tweak the comments.

This patch changes
  - qlock to ctxpool_lock,
  - qhead to ctxpool_head, and
  - qwait_event to ctxpool_wait_event.


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instead of the global variable (shutdown_in_progress).

This change has two purposes.  First of all, it makes the listener threads
which are blocked waiting for a completion context exit immediately during
shutdown.  Previously, such threads would only check for exit every second.
The second reason for this change is to put the child_main() function in
charge of controlling the listeners life cycle.  Previously, such relation
was circumvented by the fact that the listeners were also waiting for the
global child exit_event.  With the new separate listener_shutdown_event,
only the child_main() function is responsible for shutting down the
listeners, and I think that this makes the code a bit clearer.

All the original behavior, including the special APLOG_DEBUG diagnostic
message when we fail to acquire a free completion context in 1 second,
is kept unchanged.


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reason to choose the LIFO processing order for completion contexts.

It would be better to keep this important information in the code, instead
of just having it in the log message.


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and perform shutdown in respond to SERVICE_CONTROL_PRESHUTDOWN.

The pure shutdown notification leaves a small amount of time for the service
to finish (and the allowed amount of time has been shrinking with every new
version of Windows), and handling only it increases the chance of the process
being killed by SCM, instead of gracefully shutting down.  Handling the
preshutdown control code extends this period, and increases the chances of
finishing everything properly when the machine is rebooted or shut down.

(See https://msdn.microsoft.com/en-us/library/windows/desktop/ms683241)

Please note that although the preshutdown notifications are available only
starting from Windows Vista, the code is compatible with the previous versions
of Windows, since the SCM ignores unknown SERVICE_ACCEPT codes, and will
still send an ordinary SERVICE_CONTROL_SHUTDOWN under old Windows
versions.


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Submitted By: Ivan Zhakov <ivan {at} visualsvn.com>


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