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Fixed DPC bug: when the DPC is run, it has been removed from the queue and therefore can be queued again, the old code did not allow the dpc to be queued again until after the first one returned

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svn path=/trunk/; revision=1771
This commit is contained in:
Phillip Susi 2001-04-02 04:07:49 +00:00
parent da6d4130c3
commit 9dfa505536
1 changed files with 6 additions and 4 deletions
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10
reactos/ntoskrnl/ke/dpc.c
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@ -18,7 +18,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: dpc.c,v 1.19 2000/12/10 23:42:00 dwelch Exp $
/* $Id: dpc.c,v 1.20 2001/04/02 04:07:49 phreak Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -98,21 +98,23 @@ KiDispatchInterrupt(VOID)
current_entry = RemoveHeadList(&DpcQueueHead);
DpcQueueSize--;
KeReleaseSpinLockFromDpcLevel(&DpcQueueLock);
KeLowerIrql(oldlvl);
current = CONTAINING_RECORD(current_entry,KDPC,DpcListEntry);
current->Lock=FALSE;
KeLowerIrql(oldlvl);
while (current_entry!=(&DpcQueueHead))
{
current->DeferredRoutine(current,current->DeferredContext,
current->SystemArgument1,
current->SystemArgument2);
current->Lock=FALSE;
KeRaiseIrql(HIGH_LEVEL, &oldlvl);
KeAcquireSpinLockAtDpcLevel(&DpcQueueLock);
current_entry = RemoveHeadList(&DpcQueueHead);
DpcQueueSize--;
KeReleaseSpinLockFromDpcLevel(&DpcQueueLock);
KeLowerIrql(oldlvl);
current = CONTAINING_RECORD(current_entry,KDPC,DpcListEntry);
current->Lock=FALSE;
KeLowerIrql(oldlvl);
}
}