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Code Issues Releases Activity

Add whitespace before comment blocks. (reported by njl)

Browse Source 
Remove spurious whitespace, add indent protection, fix punctuation,
remove initialization of static variables to zero, put wakeup_ctr
and wakeup_needed in the correct order. (reported by bde)

This doesn't fix all the style bugs I introduced, but the remaining
style bugs make it easier for me to understand what I did here.
This commit is contained in:
Colin Percival 2004-04-08 02:03:49 +00:00
parent b3f9e6e20e
commit 49a74476a6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=128024
1 changed files with 13 additions and 16 deletions
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29
sys/kern/kern_timeout.c
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@ -72,23 +72,25 @@ struct mtx dont_sleep_in_callout;
#endif
static struct callout *nextsoftcheck; /* Next callout to be checked. */
/*
/*-
* Locked by callout_lock:
* curr_callout - If a callout is in progress, it is curr_callout.
* If curr_callout is non-NULL, threads waiting on
* callout_wait will be woken up as soon as the
* relevant callout completes.
* wakeup_needed - If a thread is waiting on callout_wait, then
* wakeup_needed is nonzero. Increased only when
* cutt_callout is non-NULL.
* wakeup_ctr - Incremented every time a thread wants to wait
* for a callout to complete. Modified only when
* curr_callout is non-NULL.
* wakeup_needed - If a thread is waiting on callout_wait, then
* wakeup_needed is nonzero. Increased only when
* cutt_callout is non-NULL.
*/
static struct callout *curr_callout;
static int wakeup_needed;
static int wakeup_ctr;
/*
static int wakeup_needed;
/*-
* Locked by callout_wait_lock:
* callout_wait - If wakeup_needed is set, callout_wait will be
* triggered after the current callout finishes.
@ -151,10 +153,6 @@ kern_timeout_callwheel_init(void)
#endif
mtx_init(&callout_wait_lock, "callout_wait_lock", NULL, MTX_DEF);
cv_init(&callout_wait, "callout_wait");
curr_callout = NULL;
wakeup_needed = 0;
wakeup_ctr = 0;
wakeup_done_ctr = 0;
}
/*
@ -290,7 +288,7 @@ softclock(void *dummy)
mtx_unlock(&callout_wait_lock);
mtx_lock_spin(&callout_lock);
wakeup_needed = 0;
};
}
steps = 0;
c = nextsoftcheck;
}
@ -394,7 +392,6 @@ callout_reset(c, to_ticks, ftn, arg)
{
mtx_lock_spin(&callout_lock);
if (c == curr_callout && wakeup_needed) {
/*
* We're being asked to reschedule a callout which is
@ -403,8 +400,7 @@ callout_reset(c, to_ticks, ftn, arg)
*/
mtx_unlock_spin(&callout_lock);
return;
};
}
if (c->c_flags & CALLOUT_PENDING)
callout_stop(c);
@ -425,7 +421,7 @@ callout_reset(c, to_ticks, ftn, arg)
mtx_unlock_spin(&callout_lock);
}
/* For binary compatibility */
/* For binary compatibility. */
#undef callout_stop
int
callout_stop(c)
@ -449,11 +445,12 @@ _callout_stop_safe(c, safe)
if (!(c->c_flags & CALLOUT_PENDING)) {
c->c_flags &= ~CALLOUT_ACTIVE;
if (c == curr_callout && safe) {
/* We need to wait until the callout is finished */
/* We need to wait until the callout is finished. */
wakeup_needed = 1;
wakeup_cookie = wakeup_ctr++;
mtx_unlock_spin(&callout_lock);
mtx_lock(&callout_wait_lock);
/*
* Check to make sure that softclock() didn't
* do the wakeup in between our dropping