Commit Graph

13 Commits

Author SHA1 Message Date
thorpej 67f69c1c63 Make callout_setfunc() a CPP macro. Suggested by enami. 2003-10-30 04:32:56 +00:00
thorpej db71356cd1 - Change callout_setfunc() to require that the callout handle is already
initialized.  Update the txp(4) to compensate.
- Statically initialize the TCP timer callout handles in the tcpcb
  template.  We still use callout_setfunc(), but that call is now much
  less expensive.  Add a comment that the compiler is likely to unroll
  the loop (so don't sweat that it's there).
2003-10-27 16:52:01 +00:00
scw a3b1a08d1e Fix for PR kern/22933
Avoid gcc3 pointer alias bugs caused by casting between struct callout
and struct callout_circq.
2003-09-25 10:44:11 +00:00
scw 20fb5a9f59 Cast from pointer type to db_addr_t via intptr_t. 2003-09-07 21:28:16 +00:00
he 69f1e70775 On second thought, callout_stop() should not clear the INVOKING flag. 2003-08-03 19:14:59 +00:00
he ddef043b97 Temporarily introduce CALLOUT_INVOKING, callout_invoking() and callout_ack()
to make users of the callout facility able to cooperate to work around the
race caused by the callout code lowering interrupt priority level when
invoking callout handlers, something which allows other code to run before
the callout handler gets to it's spl*() call.

This is to enable the workaround for the TCP code found in PR#20390 to be
applied.

This should be backed out once a more comprehensive fix can be put in
place.
2003-07-20 16:25:57 +00:00
lukem 09b3191490 add missing __KERNEL_RCSID() 2003-07-14 14:59:01 +00:00
mjl cf40158777 Typos in comments. 2003-05-17 15:53:42 +00:00
thorpej b9d81d9cc9 Change a printf to an event counter. Callout event counters are conditional
on CALLOUT_EVENT_COUNTERS.
2003-02-26 23:13:19 +00:00
yamt f4585f067a - don't compare c_time directly.
- in callout_hardclock, test if timeout_todo is empty or not
  before release the lock.
2003-02-11 09:43:37 +00:00
drochner d229e1e550 replace &(a?b:c) by (a?&b:&c), so that it looks more like an lvalue
(to lint at least)
approved by thorpej
2003-02-10 19:18:56 +00:00
martin 968efa18d6 Format fix for archs where ptrdiff_t != int. 2003-02-04 10:14:53 +00:00
thorpej 1b84adbe5f New callout implementation. This is based on callwheel implementation
done by Artur Grabowski and Thomas Nordin for OpenBSD, which is more
efficient in several ways than the callwheel implementation that it is
replacing.  It has been adapted to our pre-existing callout API, and
also provides the slightly more efficient (and much more intuitive)
API (adapted to the callout_*() naming scheme) that the OpenBSD version
provides.

Among other things, this shaves a bunch of cycles off rescheduling-in-
the-future a callout which is already scheduled, which the common case
for TCP timers (notably REXMT and KEEP).

The API has been simplified a bit, as well.  The (very confusing to
a good many people) "ACTIVE" state for callouts has gone away.  There
is now only "PENDING" (scheduled to fire in the future) and "EXPIRED"
(has fired, and the function called).

Kernel version bump not done; we'll ride the 1.6N bump that happened
with the malloc(9) change.
2003-02-04 01:21:03 +00:00