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Verify system timer expiration on every clock interrupt
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This commit is contained in:
Aiken Harris
2026-05-28 00:38:49 +02:00
parent f562aa0874
commit addf9addab
1 changed files with 8 additions and 2 deletions
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10
xtoskrnl/ke/systime.cc
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@@ -163,6 +163,12 @@ KE::SystemTime::UpdateSystemTime(IN PKTRAP_FRAME TrapFrame,
/* Atomically consume the current tick budget and retrieve the pre-decrement value */
CurrentTickOffset = RTL::Atomic::ExchangeAdd32((PLONG)&TickOffset, -(LONG)Increment);
/* Retrieve the current processor control block */
ControlBlock = KE::Processor::GetCurrentProcessorControlBlock();
/* Verify the system timer expiration */
KE::Timer::VerifySystemTimerExpiration(ControlBlock, TrapFrame, InterruptTime);
/* Determine whether the accumulated increments have crossed the full tick boundary */
if(CurrentTickOffset <= (LONG)Increment)
{
@@ -171,8 +177,9 @@ KE::SystemTime::UpdateSystemTime(IN PKTRAP_FRAME TrapFrame,
SystemTime.QuadPart += TimeAdjustment;
KE::SharedData::SetSystemTime(SystemTime);
/* Update the tick count */
/* Update the tick count and reverify the system timer expiration */
KE::SharedData::IncrementTickCount();
KE::Timer::VerifySystemTimerExpiration(ControlBlock, TrapFrame, InterruptTime);
/* Reload the tick offset accumulator for the next full tick period */
TickOffset += MaximumIncrement;
@@ -183,7 +190,6 @@ KE::SystemTime::UpdateSystemTime(IN PKTRAP_FRAME TrapFrame,
else
{
/* Increment the interrupt count */
ControlBlock = KE::Processor::GetCurrentProcessorControlBlock();
ControlBlock->InterruptCount++;
}
}