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Optimize bulk memory invalidation (#124)

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* Per page -> per range search (optimization)
This commit is contained in:
nmzik
2026-07-29 05:09:36 +02:00
committed by GitHub
parent 861729fc6c
commit f6e01e5403
16 changed files with 322 additions and 228 deletions
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src/graphics/host_gpu/memoryTracker.h
+43 -2
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@@ -38,10 +38,51 @@ public:
bool downloaded) noexcept;
[[nodiscard]] bool InvalidateRegion(uint64_t vaddr, uint64_t size,
PageFaultPhase phase) noexcept;
template <typename Flush>
void InvalidateRegion(uint64_t vaddr, uint64_t size, Flush&& on_flush) {
static_assert(std::is_invocable_v<Flush&>);
CheckNotInUploadCallback();
ValidateRange(vaddr, size);
const auto update_cpu_state = [this, vaddr, size] {
std::lock_guard access(m_access_mutex);
std::vector<RegionManager*> managers;
Iterate<false>(vaddr, size, [&](RegionManager* manager, uint64_t, uint64_t) {
managers.push_back(manager);
});
std::vector<std::unique_lock<TrackingSpinLock>> locks;
locks.reserve(managers.size());
for (auto* manager: managers) {
locks.emplace_back(manager->lock);
}
const bool gpu_modified = Iterate<false>(
vaddr, size, [](RegionManager* manager, uint64_t offset, uint64_t bytes) {
return manager->IsModified<DirtySource::Gpu>(offset, bytes);
});
if (gpu_modified) {
return true;
}
Iterate<false>(vaddr, size,
[](RegionManager* manager, uint64_t offset, uint64_t bytes) {
const auto changed = manager->ChangeState<DirtySource::Cpu, true>(
manager->GetCpuAddr() + offset, bytes);
manager->ApplyProtection(changed, false);
});
return false;
};
if (!update_cpu_state()) {
return;
}
std::forward<Flush>(on_flush)();
if (update_cpu_state()) {
EXIT("memory invalidation retained GPU-owned pages\n");
}
}
[[nodiscard]] bool InvalidateVirtualGpuWrite(PageFaultAccess access, uint64_t vaddr,
uint64_t size, PageFaultPhase phase) noexcept;
void ValidateGpuDirtyPages(const RangeSet& dirty, uint64_t vaddr, uint64_t size,
const char* operation) const noexcept;
void ValidateGpuDirtyPages(const RangeSet& dirty, uint64_t vaddr, uint64_t size,
const char* operation) const noexcept;
void ValidateGpuDirtyOwnership(const RangeSet& dirty, uint64_t vaddr, uint64_t size,
const char* operation);