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renderer: minor optimizations

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nmzik
2026-08-02 08:34:44 +02:00
parent da0d33224d
commit 9da7fc5dd6
3 changed files with 24 additions and 6 deletions
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tests/ImagePageTableTests.cpp
+19 -1
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@@ -117,12 +117,15 @@ void TestStrictByteFilteringAndPredicate() {
OwnerIndex index;
Check(index.Register(31, {{0x300100, 0x100}}), "first byte-disjoint owner registers");
Check(index.Register(32, {{0x300800, 0x100}}), "second byte-disjoint owner registers");
Check(index.Register(33, {{0x30f000, 0x100}}), "coarse-only owner registers");
Check(index.TrackingMembershipCount(0x300) == 2,
"byte-disjoint owners share one tracking page");
Check(index.CoarseMembershipCount(3) == 3,
"all owners share one coarse candidate bucket");
Check(index.Query(0x300400, 0x40).empty(), "page hit without byte overlap is filtered out");
const auto page_candidates = index.QueryCandidates(0x300400, 0x40);
Check(page_candidates.size() == 2,
"fault candidate query retains byte-disjoint owners on the touched page");
"fault candidate query retains touched-page owners and rejects coarse-only owners");
const auto first = index.Query(0x300180, 0x10);
Check(first.size() == 1 && first.front() == 31,
"strict byte overlap selects only the matching owner");
@@ -132,6 +135,20 @@ void TestStrictByteFilteringAndPredicate() {
"supplied predicate filters query owners");
}
void TestOwnerIndexAddressSpaceBoundary() {
OwnerIndex index;
constexpr uint64_t last_byte = OwnerIndex::CoarseTable::kAddressSpaceSize - 1;
Check(index.Register(41, {{last_byte, 1}}), "final guest byte registers");
const auto exact = index.Query(last_byte, 1);
Check(exact.size() == 1 && exact.front() == 41,
"strict query finds an exact overlap at the final guest byte");
Check(index.Query(last_byte - 1, 1).empty(),
"strict query preserves half-open overlap boundaries");
const auto page_candidates = index.QueryCandidates(last_byte - 1, 1);
Check(page_candidates.size() == 1 && page_candidates.front() == 41,
"page candidate query retains a byte-disjoint owner on the final tracking page");
}
} // namespace
int main() {
@@ -142,6 +159,7 @@ int main() {
TestMultiRangeRegistrationDeduplicatesPages();
TestSharedPageUnregisterLifecycle();
TestStrictByteFilteringAndPredicate();
TestOwnerIndexAddressSpaceBoundary();
std::printf("ImagePageTableTests: all cases passed\n");
return 0;
}