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Revert #16904 and clarify the comment about the race condition.

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svn path=/trunk/; revision=16917
This commit is contained in:
Filip Navara 2005-07-31 09:48:12 +00:00
parent 6859ea0c71
commit 5b7fe4e1d2
1 changed files with 6 additions and 8 deletions
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14
reactos/ntoskrnl/ke/clock.c
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@ -305,17 +305,15 @@ KeUpdateRunTime(
/* FIXME: Do DPC rate adjustments */
/*
* RACE CONDITION WARNING. If one stays at DISPATCH_LEVEL for a long
* time the DPC routine which checks for quantum end will not be executed
* and decrementing the quantum here would result in overflow.
*/
if (CurrentThread->Quantum < 0)
return;
/*
* If we're at end of quantum request software interrupt. The rest
* is handled in KiDispatchInterrupt.
*
* NOTE: If one stays at DISPATCH_LEVEL for a long time the DPC routine
* which checks for quantum end will not be executed and decrementing
* the quantum here can result in overflow. This is not a problem since
* we don't care about the quantum value anymore after the QuantumEnd
* flag is set.
*/
if ((CurrentThread->Quantum -= 3) <= 0)
{