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[idd] scheduler: fold late forces into cadence

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Treat a forced publication as periodic once the normal pre-deadline
send point is due. This prevents an immediate forced copy from being
followed by another copy for the same cadence slot.
This commit is contained in:
Geoffrey McRae
2026-08-06 12:35:02 +10:00
parent babfe9b1e2
commit 160c5fd1fa
1 changed files with 10 additions and 9 deletions
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19
idd/LGIdd/CFrameScheduler.cpp
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@@ -495,27 +495,28 @@ bool CFrameScheduler::GetPublishTarget(uint64_t now, uint64_t& target,
schedule = m_schedule; schedule = m_schedule;
republish = m_republishNext; republish = m_republishNext;
const uint64_t safety =
max(MIN_SAFETY_NS, m_workEstimate / 8);
const uint64_t lead =
m_schedule.targetSlack + m_workEstimate + safety;
const uint64_t periodicTarget = m_nextDeadline > lead ?
m_nextDeadline - lead : now;
if (m_forceNext) if (m_forceNext)
{ {
periodic = m_nextDeadline <= now; periodic = periodicTarget <= now;
ReleaseSRWLockExclusive(&m_lock); ReleaseSRWLockExclusive(&m_lock);
return true; return true;
} }
periodic = true; periodic = true;
if (m_nextDeadline <= now) if (periodicTarget <= now)
{ {
ReleaseSRWLockExclusive(&m_lock); ReleaseSRWLockExclusive(&m_lock);
return true; return true;
} }
const uint64_t safety = target = periodicTarget;
max(MIN_SAFETY_NS, m_workEstimate / 8);
const uint64_t lead =
m_schedule.targetSlack + m_workEstimate + safety;
target = m_nextDeadline > lead ? m_nextDeadline - lead : now;
if (target < now)
target = now;
ReleaseSRWLockExclusive(&m_lock); ReleaseSRWLockExclusive(&m_lock);
return true; return true;
} }