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-rw-r--r--src/common/CMakeLists.txt3
-rw-r--r--src/common/intrusive_red_black_tree.h627
-rw-r--r--src/common/parent_of_member.h189
-rw-r--r--src/common/tree.h822
4 files changed, 1641 insertions, 0 deletions
diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index 2c2bd2ee8..5d781cd77 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -123,6 +123,7 @@ add_library(common STATIC
hash.h
hex_util.cpp
hex_util.h
+ intrusive_red_black_tree.h
logging/backend.cpp
logging/backend.h
logging/filter.cpp
@@ -143,6 +144,7 @@ add_library(common STATIC
page_table.h
param_package.cpp
param_package.h
+ parent_of_member.h
quaternion.h
ring_buffer.h
scm_rev.cpp
@@ -167,6 +169,7 @@ add_library(common STATIC
time_zone.h
timer.cpp
timer.h
+ tree.h
uint128.cpp
uint128.h
uuid.cpp
diff --git a/src/common/intrusive_red_black_tree.h b/src/common/intrusive_red_black_tree.h
new file mode 100644
index 000000000..929b5497e
--- /dev/null
+++ b/src/common/intrusive_red_black_tree.h
@@ -0,0 +1,627 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/parent_of_member.h"
+#include "common/tree.h"
+
+namespace Common {
+
+namespace impl {
+
+class IntrusiveRedBlackTreeImpl;
+
+}
+
+struct IntrusiveRedBlackTreeNode {
+
+private:
+ RB_ENTRY(IntrusiveRedBlackTreeNode) entry{};
+
+ friend class impl::IntrusiveRedBlackTreeImpl;
+
+ template <class, class, class>
+ friend class IntrusiveRedBlackTree;
+
+public:
+ constexpr IntrusiveRedBlackTreeNode() = default;
+};
+
+template <class T, class Traits, class Comparator>
+class IntrusiveRedBlackTree;
+
+namespace impl {
+
+class IntrusiveRedBlackTreeImpl {
+
+private:
+ template <class, class, class>
+ friend class ::Common::IntrusiveRedBlackTree;
+
+private:
+ RB_HEAD(IntrusiveRedBlackTreeRoot, IntrusiveRedBlackTreeNode);
+ using RootType = IntrusiveRedBlackTreeRoot;
+
+private:
+ IntrusiveRedBlackTreeRoot root;
+
+public:
+ template <bool Const>
+ class Iterator;
+
+ using value_type = IntrusiveRedBlackTreeNode;
+ using size_type = size_t;
+ using difference_type = ptrdiff_t;
+ using pointer = value_type*;
+ using const_pointer = const value_type*;
+ using reference = value_type&;
+ using const_reference = const value_type&;
+ using iterator = Iterator<false>;
+ using const_iterator = Iterator<true>;
+
+ template <bool Const>
+ class Iterator {
+ public:
+ using iterator_category = std::bidirectional_iterator_tag;
+ using value_type = typename IntrusiveRedBlackTreeImpl::value_type;
+ using difference_type = typename IntrusiveRedBlackTreeImpl::difference_type;
+ using pointer = std::conditional_t<Const, IntrusiveRedBlackTreeImpl::const_pointer,
+ IntrusiveRedBlackTreeImpl::pointer>;
+ using reference = std::conditional_t<Const, IntrusiveRedBlackTreeImpl::const_reference,
+ IntrusiveRedBlackTreeImpl::reference>;
+
+ private:
+ pointer node;
+
+ public:
+ explicit Iterator(pointer n) : node(n) {}
+
+ bool operator==(const Iterator& rhs) const {
+ return this->node == rhs.node;
+ }
+
+ bool operator!=(const Iterator& rhs) const {
+ return !(*this == rhs);
+ }
+
+ pointer operator->() const {
+ return this->node;
+ }
+
+ reference operator*() const {
+ return *this->node;
+ }
+
+ Iterator& operator++() {
+ this->node = GetNext(this->node);
+ return *this;
+ }
+
+ Iterator& operator--() {
+ this->node = GetPrev(this->node);
+ return *this;
+ }
+
+ Iterator operator++(int) {
+ const Iterator it{*this};
+ ++(*this);
+ return it;
+ }
+
+ Iterator operator--(int) {
+ const Iterator it{*this};
+ --(*this);
+ return it;
+ }
+
+ operator Iterator<true>() const {
+ return Iterator<true>(this->node);
+ }
+ };
+
+protected:
+ // Generate static implementations for non-comparison operations for IntrusiveRedBlackTreeRoot.
+ RB_GENERATE_WITHOUT_COMPARE_STATIC(IntrusiveRedBlackTreeRoot, IntrusiveRedBlackTreeNode, entry);
+
+private:
+ // Define accessors using RB_* functions.
+ constexpr void InitializeImpl() {
+ RB_INIT(&this->root);
+ }
+
+ bool EmptyImpl() const {
+ return RB_EMPTY(&this->root);
+ }
+
+ IntrusiveRedBlackTreeNode* GetMinImpl() const {
+ return RB_MIN(IntrusiveRedBlackTreeRoot,
+ const_cast<IntrusiveRedBlackTreeRoot*>(&this->root));
+ }
+
+ IntrusiveRedBlackTreeNode* GetMaxImpl() const {
+ return RB_MAX(IntrusiveRedBlackTreeRoot,
+ const_cast<IntrusiveRedBlackTreeRoot*>(&this->root));
+ }
+
+ IntrusiveRedBlackTreeNode* RemoveImpl(IntrusiveRedBlackTreeNode* node) {
+ return RB_REMOVE(IntrusiveRedBlackTreeRoot, &this->root, node);
+ }
+
+public:
+ static IntrusiveRedBlackTreeNode* GetNext(IntrusiveRedBlackTreeNode* node) {
+ return RB_NEXT(IntrusiveRedBlackTreeRoot, nullptr, node);
+ }
+
+ static IntrusiveRedBlackTreeNode* GetPrev(IntrusiveRedBlackTreeNode* node) {
+ return RB_PREV(IntrusiveRedBlackTreeRoot, nullptr, node);
+ }
+
+ static IntrusiveRedBlackTreeNode const* GetNext(const IntrusiveRedBlackTreeNode* node) {
+ return static_cast<const IntrusiveRedBlackTreeNode*>(
+ GetNext(const_cast<IntrusiveRedBlackTreeNode*>(node)));
+ }
+
+ static IntrusiveRedBlackTreeNode const* GetPrev(const IntrusiveRedBlackTreeNode* node) {
+ return static_cast<const IntrusiveRedBlackTreeNode*>(
+ GetPrev(const_cast<IntrusiveRedBlackTreeNode*>(node)));
+ }
+
+public:
+ constexpr IntrusiveRedBlackTreeImpl() : root() {
+ this->InitializeImpl();
+ }
+
+ // Iterator accessors.
+ iterator begin() {
+ return iterator(this->GetMinImpl());
+ }
+
+ const_iterator begin() const {
+ return const_iterator(this->GetMinImpl());
+ }
+
+ iterator end() {
+ return iterator(static_cast<IntrusiveRedBlackTreeNode*>(nullptr));
+ }
+
+ const_iterator end() const {
+ return const_iterator(static_cast<const IntrusiveRedBlackTreeNode*>(nullptr));
+ }
+
+ const_iterator cbegin() const {
+ return this->begin();
+ }
+
+ const_iterator cend() const {
+ return this->end();
+ }
+
+ iterator iterator_to(reference ref) {
+ return iterator(&ref);
+ }
+
+ const_iterator iterator_to(const_reference ref) const {
+ return const_iterator(&ref);
+ }
+
+ // Content management.
+ bool empty() const {
+ return this->EmptyImpl();
+ }
+
+ reference back() {
+ return *this->GetMaxImpl();
+ }
+
+ const_reference back() const {
+ return *this->GetMaxImpl();
+ }
+
+ reference front() {
+ return *this->GetMinImpl();
+ }
+
+ const_reference front() const {
+ return *this->GetMinImpl();
+ }
+
+ iterator erase(iterator it) {
+ auto cur = std::addressof(*it);
+ auto next = GetNext(cur);
+ this->RemoveImpl(cur);
+ return iterator(next);
+ }
+};
+
+} // namespace impl
+
+template <typename T>
+concept HasLightCompareType = requires {
+ { std::is_same<typename T::LightCompareType, void>::value }
+ ->std::convertible_to<bool>;
+};
+
+namespace impl {
+
+template <typename T, typename Default>
+consteval auto* GetLightCompareType() {
+ if constexpr (HasLightCompareType<T>) {
+ return static_cast<typename T::LightCompareType*>(nullptr);
+ } else {
+ return static_cast<Default*>(nullptr);
+ }
+}
+
+} // namespace impl
+
+template <typename T, typename Default>
+using LightCompareType = std::remove_pointer_t<decltype(impl::GetLightCompareType<T, Default>())>;
+
+template <class T, class Traits, class Comparator>
+class IntrusiveRedBlackTree {
+
+public:
+ using ImplType = impl::IntrusiveRedBlackTreeImpl;
+
+private:
+ ImplType impl{};
+
+public:
+ struct IntrusiveRedBlackTreeRootWithCompare : ImplType::IntrusiveRedBlackTreeRoot {};
+
+ template <bool Const>
+ class Iterator;
+
+ using value_type = T;
+ using size_type = size_t;
+ using difference_type = ptrdiff_t;
+ using pointer = T*;
+ using const_pointer = const T*;
+ using reference = T&;
+ using const_reference = const T&;
+ using iterator = Iterator<false>;
+ using const_iterator = Iterator<true>;
+
+ using light_value_type = LightCompareType<Comparator, value_type>;
+ using const_light_pointer = const light_value_type*;
+ using const_light_reference = const light_value_type&;
+
+ template <bool Const>
+ class Iterator {
+ public:
+ friend class IntrusiveRedBlackTree<T, Traits, Comparator>;
+
+ using ImplIterator =
+ std::conditional_t<Const, ImplType::const_iterator, ImplType::iterator>;
+
+ using iterator_category = std::bidirectional_iterator_tag;
+ using value_type = typename IntrusiveRedBlackTree::value_type;
+ using difference_type = typename IntrusiveRedBlackTree::difference_type;
+ using pointer = std::conditional_t<Const, IntrusiveRedBlackTree::const_pointer,
+ IntrusiveRedBlackTree::pointer>;
+ using reference = std::conditional_t<Const, IntrusiveRedBlackTree::const_reference,
+ IntrusiveRedBlackTree::reference>;
+
+ private:
+ ImplIterator iterator;
+
+ private:
+ explicit Iterator(ImplIterator it) : iterator(it) {}
+
+ explicit Iterator(typename std::conditional<Const, ImplType::const_iterator,
+ ImplType::iterator>::type::pointer ptr)
+ : iterator(ptr) {}
+
+ ImplIterator GetImplIterator() const {
+ return this->iterator;
+ }
+
+ public:
+ bool operator==(const Iterator& rhs) const {
+ return this->iterator == rhs.iterator;
+ }
+
+ bool operator!=(const Iterator& rhs) const {
+ return !(*this == rhs);
+ }
+
+ pointer operator->() const {
+ return Traits::GetParent(std::addressof(*this->iterator));
+ }
+
+ reference operator*() const {
+ return *Traits::GetParent(std::addressof(*this->iterator));
+ }
+
+ Iterator& operator++() {
+ ++this->iterator;
+ return *this;
+ }
+
+ Iterator& operator--() {
+ --this->iterator;
+ return *this;
+ }
+
+ Iterator operator++(int) {
+ const Iterator it{*this};
+ ++this->iterator;
+ return it;
+ }
+
+ Iterator operator--(int) {
+ const Iterator it{*this};
+ --this->iterator;
+ return it;
+ }
+
+ operator Iterator<true>() const {
+ return Iterator<true>(this->iterator);
+ }
+ };
+
+private:
+ // Generate static implementations for comparison operations for IntrusiveRedBlackTreeRoot.
+ RB_GENERATE_WITH_COMPARE_STATIC(IntrusiveRedBlackTreeRootWithCompare, IntrusiveRedBlackTreeNode,
+ entry, CompareImpl, LightCompareImpl);
+
+private:
+ static int CompareImpl(const IntrusiveRedBlackTreeNode* lhs,
+ const IntrusiveRedBlackTreeNode* rhs) {
+ return Comparator::Compare(*Traits::GetParent(lhs), *Traits::GetParent(rhs));
+ }
+
+ static int LightCompareImpl(const void* elm, const IntrusiveRedBlackTreeNode* rhs) {
+ return Comparator::Compare(*static_cast<const_light_pointer>(elm), *Traits::GetParent(rhs));
+ }
+
+ // Define accessors using RB_* functions.
+ IntrusiveRedBlackTreeNode* InsertImpl(IntrusiveRedBlackTreeNode* node) {
+ return RB_INSERT(IntrusiveRedBlackTreeRootWithCompare,
+ static_cast<IntrusiveRedBlackTreeRootWithCompare*>(&this->impl.root),
+ node);
+ }
+
+ IntrusiveRedBlackTreeNode* FindImpl(const IntrusiveRedBlackTreeNode* node) const {
+ return RB_FIND(
+ IntrusiveRedBlackTreeRootWithCompare,
+ const_cast<IntrusiveRedBlackTreeRootWithCompare*>(
+ static_cast<const IntrusiveRedBlackTreeRootWithCompare*>(&this->impl.root)),
+ const_cast<IntrusiveRedBlackTreeNode*>(node));
+ }
+
+ IntrusiveRedBlackTreeNode* NFindImpl(const IntrusiveRedBlackTreeNode* node) const {
+ return RB_NFIND(
+ IntrusiveRedBlackTreeRootWithCompare,
+ const_cast<IntrusiveRedBlackTreeRootWithCompare*>(
+ static_cast<const IntrusiveRedBlackTreeRootWithCompare*>(&this->impl.root)),
+ const_cast<IntrusiveRedBlackTreeNode*>(node));
+ }
+
+ IntrusiveRedBlackTreeNode* FindLightImpl(const_light_pointer lelm) const {
+ return RB_FIND_LIGHT(
+ IntrusiveRedBlackTreeRootWithCompare,
+ const_cast<IntrusiveRedBlackTreeRootWithCompare*>(
+ static_cast<const IntrusiveRedBlackTreeRootWithCompare*>(&this->impl.root)),
+ static_cast<const void*>(lelm));
+ }
+
+ IntrusiveRedBlackTreeNode* NFindLightImpl(const_light_pointer lelm) const {
+ return RB_NFIND_LIGHT(
+ IntrusiveRedBlackTreeRootWithCompare,
+ const_cast<IntrusiveRedBlackTreeRootWithCompare*>(
+ static_cast<const IntrusiveRedBlackTreeRootWithCompare*>(&this->impl.root)),
+ static_cast<const void*>(lelm));
+ }
+
+public:
+ constexpr IntrusiveRedBlackTree() = default;
+
+ // Iterator accessors.
+ iterator begin() {
+ return iterator(this->impl.begin());
+ }
+
+ const_iterator begin() const {
+ return const_iterator(this->impl.begin());
+ }
+
+ iterator end() {
+ return iterator(this->impl.end());
+ }
+
+ const_iterator end() const {
+ return const_iterator(this->impl.end());
+ }
+
+ const_iterator cbegin() const {
+ return this->begin();
+ }
+
+ const_iterator cend() const {
+ return this->end();
+ }
+
+ iterator iterator_to(reference ref) {
+ return iterator(this->impl.iterator_to(*Traits::GetNode(std::addressof(ref))));
+ }
+
+ const_iterator iterator_to(const_reference ref) const {
+ return const_iterator(this->impl.iterator_to(*Traits::GetNode(std::addressof(ref))));
+ }
+
+ // Content management.
+ bool empty() const {
+ return this->impl.empty();
+ }
+
+ reference back() {
+ return *Traits::GetParent(std::addressof(this->impl.back()));
+ }
+
+ const_reference back() const {
+ return *Traits::GetParent(std::addressof(this->impl.back()));
+ }
+
+ reference front() {
+ return *Traits::GetParent(std::addressof(this->impl.front()));
+ }
+
+ const_reference front() const {
+ return *Traits::GetParent(std::addressof(this->impl.front()));
+ }
+
+ iterator erase(iterator it) {
+ return iterator(this->impl.erase(it.GetImplIterator()));
+ }
+
+ iterator insert(reference ref) {
+ ImplType::pointer node = Traits::GetNode(std::addressof(ref));
+ this->InsertImpl(node);
+ return iterator(node);
+ }
+
+ iterator find(const_reference ref) const {
+ return iterator(this->FindImpl(Traits::GetNode(std::addressof(ref))));
+ }
+
+ iterator nfind(const_reference ref) const {
+ return iterator(this->NFindImpl(Traits::GetNode(std::addressof(ref))));
+ }
+
+ iterator find_light(const_light_reference ref) const {
+ return iterator(this->FindLightImpl(std::addressof(ref)));
+ }
+
+ iterator nfind_light(const_light_reference ref) const {
+ return iterator(this->NFindLightImpl(std::addressof(ref)));
+ }
+};
+
+template <auto T, class Derived = impl::GetParentType<T>>
+class IntrusiveRedBlackTreeMemberTraits;
+
+template <class Parent, IntrusiveRedBlackTreeNode Parent::*Member, class Derived>
+class IntrusiveRedBlackTreeMemberTraits<Member, Derived> {
+public:
+ template <class Comparator>
+ using TreeType = IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeMemberTraits, Comparator>;
+ using TreeTypeImpl = impl::IntrusiveRedBlackTreeImpl;
+
+private:
+ template <class, class, class>
+ friend class IntrusiveRedBlackTree;
+
+ friend class impl::IntrusiveRedBlackTreeImpl;
+
+ static constexpr IntrusiveRedBlackTreeNode* GetNode(Derived* parent) {
+ return std::addressof(parent->*Member);
+ }
+
+ static constexpr IntrusiveRedBlackTreeNode const* GetNode(Derived const* parent) {
+ return std::addressof(parent->*Member);
+ }
+
+ static constexpr Derived* GetParent(IntrusiveRedBlackTreeNode* node) {
+ return GetParentPointer<Member, Derived>(node);
+ }
+
+ static constexpr Derived const* GetParent(const IntrusiveRedBlackTreeNode* node) {
+ return GetParentPointer<Member, Derived>(node);
+ }
+
+private:
+ static constexpr TYPED_STORAGE(Derived) DerivedStorage = {};
+ static_assert(GetParent(GetNode(GetPointer(DerivedStorage))) == GetPointer(DerivedStorage));
+};
+
+template <auto T, class Derived = impl::GetParentType<T>>
+class IntrusiveRedBlackTreeMemberTraitsDeferredAssert;
+
+template <class Parent, IntrusiveRedBlackTreeNode Parent::*Member, class Derived>
+class IntrusiveRedBlackTreeMemberTraitsDeferredAssert<Member, Derived> {
+public:
+ template <class Comparator>
+ using TreeType =
+ IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeMemberTraitsDeferredAssert, Comparator>;
+ using TreeTypeImpl = impl::IntrusiveRedBlackTreeImpl;
+
+ static constexpr bool IsValid() {
+ TYPED_STORAGE(Derived) DerivedStorage = {};
+ return GetParent(GetNode(GetPointer(DerivedStorage))) == GetPointer(DerivedStorage);
+ }
+
+private:
+ template <class, class, class>
+ friend class IntrusiveRedBlackTree;
+
+ friend class impl::IntrusiveRedBlackTreeImpl;
+
+ static constexpr IntrusiveRedBlackTreeNode* GetNode(Derived* parent) {
+ return std::addressof(parent->*Member);
+ }
+
+ static constexpr IntrusiveRedBlackTreeNode const* GetNode(Derived const* parent) {
+ return std::addressof(parent->*Member);
+ }
+
+ static constexpr Derived* GetParent(IntrusiveRedBlackTreeNode* node) {
+ return GetParentPointer<Member, Derived>(node);
+ }
+
+ static constexpr Derived const* GetParent(const IntrusiveRedBlackTreeNode* node) {
+ return GetParentPointer<Member, Derived>(node);
+ }
+};
+
+template <class Derived>
+class IntrusiveRedBlackTreeBaseNode : public IntrusiveRedBlackTreeNode {
+public:
+ constexpr Derived* GetPrev() {
+ return static_cast<Derived*>(impl::IntrusiveRedBlackTreeImpl::GetPrev(this));
+ }
+ constexpr const Derived* GetPrev() const {
+ return static_cast<const Derived*>(impl::IntrusiveRedBlackTreeImpl::GetPrev(this));
+ }
+
+ constexpr Derived* GetNext() {
+ return static_cast<Derived*>(impl::IntrusiveRedBlackTreeImpl::GetNext(this));
+ }
+ constexpr const Derived* GetNext() const {
+ return static_cast<const Derived*>(impl::IntrusiveRedBlackTreeImpl::GetNext(this));
+ }
+};
+
+template <class Derived>
+class IntrusiveRedBlackTreeBaseTraits {
+public:
+ template <class Comparator>
+ using TreeType = IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeBaseTraits, Comparator>;
+ using TreeTypeImpl = impl::IntrusiveRedBlackTreeImpl;
+
+private:
+ template <class, class, class>
+ friend class IntrusiveRedBlackTree;
+
+ friend class impl::IntrusiveRedBlackTreeImpl;
+
+ static constexpr IntrusiveRedBlackTreeNode* GetNode(Derived* parent) {
+ return static_cast<IntrusiveRedBlackTreeNode*>(parent);
+ }
+
+ static constexpr IntrusiveRedBlackTreeNode const* GetNode(Derived const* parent) {
+ return static_cast<const IntrusiveRedBlackTreeNode*>(parent);
+ }
+
+ static constexpr Derived* GetParent(IntrusiveRedBlackTreeNode* node) {
+ return static_cast<Derived*>(node);
+ }
+
+ static constexpr Derived const* GetParent(const IntrusiveRedBlackTreeNode* node) {
+ return static_cast<const Derived*>(node);
+ }
+};
+
+} // namespace Common
diff --git a/src/common/parent_of_member.h b/src/common/parent_of_member.h
new file mode 100644
index 000000000..1af31ee44
--- /dev/null
+++ b/src/common/parent_of_member.h
@@ -0,0 +1,189 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <type_traits>
+
+#include "common/assert.h"
+#include "common/common_types.h"
+
+namespace Common {
+
+template <typename T, size_t Size, size_t Align>
+struct TypedStorage {
+ std::aligned_storage_t<Size, Align> storage_;
+};
+
+#define TYPED_STORAGE(...) TypedStorage<__VA_ARGS__, sizeof(__VA_ARGS__), alignof(__VA_ARGS__)>
+
+template <typename T>
+static constexpr T* GetPointer(TYPED_STORAGE(T) & ts) {
+ return static_cast<T*>(static_cast<void*>(std::addressof(ts.storage_)));
+}
+
+template <typename T>
+static constexpr const T* GetPointer(const TYPED_STORAGE(T) & ts) {
+ return static_cast<const T*>(static_cast<const void*>(std::addressof(ts.storage_)));
+}
+
+namespace impl {
+
+template <size_t MaxDepth>
+struct OffsetOfUnionHolder {
+ template <typename ParentType, typename MemberType, size_t Offset>
+ union UnionImpl {
+ using PaddingMember = char;
+ static constexpr size_t GetOffset() {
+ return Offset;
+ }
+
+#pragma pack(push, 1)
+ struct {
+ PaddingMember padding[Offset];
+ MemberType members[(sizeof(ParentType) / sizeof(MemberType)) + 1];
+ } data;
+#pragma pack(pop)
+ UnionImpl<ParentType, MemberType, Offset + 1> next_union;
+ };
+
+ template <typename ParentType, typename MemberType>
+ union UnionImpl<ParentType, MemberType, 0> {
+ static constexpr size_t GetOffset() {
+ return 0;
+ }
+
+ struct {
+ MemberType members[(sizeof(ParentType) / sizeof(MemberType)) + 1];
+ } data;
+ UnionImpl<ParentType, MemberType, 1> next_union;
+ };
+
+ template <typename ParentType, typename MemberType>
+ union UnionImpl<ParentType, MemberType, MaxDepth> {};
+};
+
+template <typename ParentType, typename MemberType>
+struct OffsetOfCalculator {
+ using UnionHolder =
+ typename OffsetOfUnionHolder<sizeof(MemberType)>::template UnionImpl<ParentType, MemberType,
+ 0>;
+ union Union {
+ char c{};
+ UnionHolder first_union;
+ TYPED_STORAGE(ParentType) parent;
+
+ constexpr Union() : c() {}
+ };
+ static constexpr Union U = {};
+
+ static constexpr const MemberType* GetNextAddress(const MemberType* start,
+ const MemberType* target) {
+ while (start < target) {
+ start++;
+ }
+ return start;
+ }
+
+ static constexpr std::ptrdiff_t GetDifference(const MemberType* start,
+ const MemberType* target) {
+ return (target - start) * sizeof(MemberType);
+ }
+
+ template <typename CurUnion>
+ static constexpr std::ptrdiff_t OffsetOfImpl(MemberType ParentType::*member,
+ CurUnion& cur_union) {
+ constexpr size_t Offset = CurUnion::GetOffset();
+ const auto target = std::addressof(GetPointer(U.parent)->*member);
+ const auto start = std::addressof(cur_union.data.members[0]);
+ const auto next = GetNextAddress(start, target);
+
+ if (next != target) {
+ if constexpr (Offset < sizeof(MemberType) - 1) {
+ return OffsetOfImpl(member, cur_union.next_union);
+ } else {
+ UNREACHABLE();
+ }
+ }
+
+ return (next - start) * sizeof(MemberType) + Offset;
+ }
+
+ static constexpr std::ptrdiff_t OffsetOf(MemberType ParentType::*member) {
+ return OffsetOfImpl(member, U.first_union);
+ }
+};
+
+template <typename T>
+struct GetMemberPointerTraits;
+
+template <typename P, typename M>
+struct GetMemberPointerTraits<M P::*> {
+ using Parent = P;
+ using Member = M;
+};
+
+template <auto MemberPtr>
+using GetParentType = typename GetMemberPointerTraits<decltype(MemberPtr)>::Parent;
+
+template <auto MemberPtr>
+using GetMemberType = typename GetMemberPointerTraits<decltype(MemberPtr)>::Member;
+
+template <auto MemberPtr, typename RealParentType = GetParentType<MemberPtr>>
+static inline std::ptrdiff_t OffsetOf = [] {
+ using DeducedParentType = GetParentType<MemberPtr>;
+ using MemberType = GetMemberType<MemberPtr>;
+ static_assert(std::is_base_of<DeducedParentType, RealParentType>::value ||
+ std::is_same<RealParentType, DeducedParentType>::value);
+
+ return OffsetOfCalculator<RealParentType, MemberType>::OffsetOf(MemberPtr);
+}();
+
+} // namespace impl
+
+template <auto MemberPtr, typename RealParentType = impl::GetParentType<MemberPtr>>
+constexpr RealParentType& GetParentReference(impl::GetMemberType<MemberPtr>* member) {
+ std::ptrdiff_t Offset = impl::OffsetOf<MemberPtr, RealParentType>;
+ return *static_cast<RealParentType*>(
+ static_cast<void*>(static_cast<uint8_t*>(static_cast<void*>(member)) - Offset));
+}
+
+template <auto MemberPtr, typename RealParentType = impl::GetParentType<MemberPtr>>
+constexpr RealParentType const& GetParentReference(impl::GetMemberType<MemberPtr> const* member) {
+ std::ptrdiff_t Offset = impl::OffsetOf<MemberPtr, RealParentType>;
+ return *static_cast<const RealParentType*>(static_cast<const void*>(
+ static_cast<const uint8_t*>(static_cast<const void*>(member)) - Offset));
+}
+
+template <auto MemberPtr, typename RealParentType = impl::GetParentType<MemberPtr>>
+constexpr RealParentType* GetParentPointer(impl::GetMemberType<MemberPtr>* member) {
+ return std::addressof(GetParentReference<MemberPtr, RealParentType>(member));
+}
+
+template <auto MemberPtr, typename RealParentType = impl::GetParentType<MemberPtr>>
+constexpr RealParentType const* GetParentPointer(impl::GetMemberType<MemberPtr> const* member) {
+ return std::addressof(GetParentReference<MemberPtr, RealParentType>(member));
+}
+
+template <auto MemberPtr, typename RealParentType = impl::GetParentType<MemberPtr>>
+constexpr RealParentType& GetParentReference(impl::GetMemberType<MemberPtr>& member) {
+ return GetParentReference<MemberPtr, RealParentType>(std::addressof(member));
+}
+
+template <auto MemberPtr, typename RealParentType = impl::GetParentType<MemberPtr>>
+constexpr RealParentType const& GetParentReference(impl::GetMemberType<MemberPtr> const& member) {
+ return GetParentReference<MemberPtr, RealParentType>(std::addressof(member));
+}
+
+template <auto MemberPtr, typename RealParentType = impl::GetParentType<MemberPtr>>
+constexpr RealParentType* GetParentPointer(impl::GetMemberType<MemberPtr>& member) {
+ return std::addressof(GetParentReference<MemberPtr, RealParentType>(member));
+}
+
+template <auto MemberPtr, typename RealParentType = impl::GetParentType<MemberPtr>>
+constexpr RealParentType const* GetParentPointer(impl::GetMemberType<MemberPtr> const& member) {
+ return std::addressof(GetParentReference<MemberPtr, RealParentType>(member));
+}
+
+} // namespace Common
diff --git a/src/common/tree.h b/src/common/tree.h
new file mode 100644
index 000000000..a6b636646
--- /dev/null
+++ b/src/common/tree.h
@@ -0,0 +1,822 @@
+/* $NetBSD: tree.h,v 1.8 2004/03/28 19:38:30 provos Exp $ */
+/* $OpenBSD: tree.h,v 1.7 2002/10/17 21:51:54 art Exp $ */
+/* $FreeBSD$ */
+
+/*-
+ * Copyright 2002 Niels Provos <provos@citi.umich.edu>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SYS_TREE_H_
+#define _SYS_TREE_H_
+
+/* FreeBSD <sys/cdefs.h> has a lot of defines we don't really want. */
+/* tree.h only actually uses __inline and __unused, so we'll just define those. */
+
+/* #include <sys/cdefs.h> */
+
+#ifndef __inline
+#define __inline inline
+#endif
+
+/*
+ * This file defines data structures for different types of trees:
+ * splay trees and red-black trees.
+ *
+ * A splay tree is a self-organizing data structure. Every operation
+ * on the tree causes a splay to happen. The splay moves the requested
+ * node to the root of the tree and partly rebalances it.
+ *
+ * This has the benefit that request locality causes faster lookups as
+ * the requested nodes move to the top of the tree. On the other hand,
+ * every lookup causes memory writes.
+ *
+ * The Balance Theorem bounds the total access time for m operations
+ * and n inserts on an initially empty tree as O((m + n)lg n). The
+ * amortized cost for a sequence of m accesses to a splay tree is O(lg n);
+ *
+ * A red-black tree is a binary search tree with the node color as an
+ * extra attribute. It fulfills a set of conditions:
+ * - every search path from the root to a leaf consists of the
+ * same number of black nodes,
+ * - each red node (except for the root) has a black parent,
+ * - each leaf node is black.
+ *
+ * Every operation on a red-black tree is bounded as O(lg n).
+ * The maximum height of a red-black tree is 2lg (n+1).
+ */
+
+#define SPLAY_HEAD(name, type) \
+ struct name { \
+ struct type* sph_root; /* root of the tree */ \
+ }
+
+#define SPLAY_INITIALIZER(root) \
+ { NULL }
+
+#define SPLAY_INIT(root) \
+ do { \
+ (root)->sph_root = NULL; \
+ } while (/*CONSTCOND*/ 0)
+
+#define SPLAY_ENTRY(type) \
+ struct { \
+ struct type* spe_left; /* left element */ \
+ struct type* spe_right; /* right element */ \
+ }
+
+#define SPLAY_LEFT(elm, field) (elm)->field.spe_left
+#define SPLAY_RIGHT(elm, field) (elm)->field.spe_right
+#define SPLAY_ROOT(head) (head)->sph_root
+#define SPLAY_EMPTY(head) (SPLAY_ROOT(head) == NULL)
+
+/* SPLAY_ROTATE_{LEFT,RIGHT} expect that tmp hold SPLAY_{RIGHT,LEFT} */
+#define SPLAY_ROTATE_RIGHT(head, tmp, field) \
+ do { \
+ SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(tmp, field); \
+ SPLAY_RIGHT(tmp, field) = (head)->sph_root; \
+ (head)->sph_root = tmp; \
+ } while (/*CONSTCOND*/ 0)
+
+#define SPLAY_ROTATE_LEFT(head, tmp, field) \
+ do { \
+ SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(tmp, field); \
+ SPLAY_LEFT(tmp, field) = (head)->sph_root; \
+ (head)->sph_root = tmp; \
+ } while (/*CONSTCOND*/ 0)
+
+#define SPLAY_LINKLEFT(head, tmp, field) \
+ do { \
+ SPLAY_LEFT(tmp, field) = (head)->sph_root; \
+ tmp = (head)->sph_root; \
+ (head)->sph_root = SPLAY_LEFT((head)->sph_root, field); \
+ } while (/*CONSTCOND*/ 0)
+
+#define SPLAY_LINKRIGHT(head, tmp, field) \
+ do { \
+ SPLAY_RIGHT(tmp, field) = (head)->sph_root; \
+ tmp = (head)->sph_root; \
+ (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field); \
+ } while (/*CONSTCOND*/ 0)
+
+#define SPLAY_ASSEMBLE(head, node, left, right, field) \
+ do { \
+ SPLAY_RIGHT(left, field) = SPLAY_LEFT((head)->sph_root, field); \
+ SPLAY_LEFT(right, field) = SPLAY_RIGHT((head)->sph_root, field); \
+ SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(node, field); \
+ SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(node, field); \
+ } while (/*CONSTCOND*/ 0)
+
+/* Generates prototypes and inline functions */
+
+#define SPLAY_PROTOTYPE(name, type, field, cmp) \
+ void name##_SPLAY(struct name*, struct type*); \
+ void name##_SPLAY_MINMAX(struct name*, int); \
+ struct type* name##_SPLAY_INSERT(struct name*, struct type*); \
+ struct type* name##_SPLAY_REMOVE(struct name*, struct type*); \
+ \
+ /* Finds the node with the same key as elm */ \
+ static __inline struct type* name##_SPLAY_FIND(struct name* head, struct type* elm) { \
+ if (SPLAY_EMPTY(head)) \
+ return (NULL); \
+ name##_SPLAY(head, elm); \
+ if ((cmp)(elm, (head)->sph_root) == 0) \
+ return (head->sph_root); \
+ return (NULL); \
+ } \
+ \
+ static __inline struct type* name##_SPLAY_NEXT(struct name* head, struct type* elm) { \
+ name##_SPLAY(head, elm); \
+ if (SPLAY_RIGHT(elm, field) != NULL) { \
+ elm = SPLAY_RIGHT(elm, field); \
+ while (SPLAY_LEFT(elm, field) != NULL) { \
+ elm = SPLAY_LEFT(elm, field); \
+ } \
+ } else \
+ elm = NULL; \
+ return (elm); \
+ } \
+ \
+ static __inline struct type* name##_SPLAY_MIN_MAX(struct name* head, int val) { \
+ name##_SPLAY_MINMAX(head, val); \
+ return (SPLAY_ROOT(head)); \
+ }
+
+/* Main splay operation.
+ * Moves node close to the key of elm to top
+ */
+#define SPLAY_GENERATE(name, type, field, cmp) \
+ struct type* name##_SPLAY_INSERT(struct name* head, struct type* elm) { \
+ if (SPLAY_EMPTY(head)) { \
+ SPLAY_LEFT(elm, field) = SPLAY_RIGHT(elm, field) = NULL; \
+ } else { \
+ int __comp; \
+ name##_SPLAY(head, elm); \
+ __comp = (cmp)(elm, (head)->sph_root); \
+ if (__comp < 0) { \
+ SPLAY_LEFT(elm, field) = SPLAY_LEFT((head)->sph_root, field); \
+ SPLAY_RIGHT(elm, field) = (head)->sph_root; \
+ SPLAY_LEFT((head)->sph_root, field) = NULL; \
+ } else if (__comp > 0) { \
+ SPLAY_RIGHT(elm, field) = SPLAY_RIGHT((head)->sph_root, field); \
+ SPLAY_LEFT(elm, field) = (head)->sph_root; \
+ SPLAY_RIGHT((head)->sph_root, field) = NULL; \
+ } else \
+ return ((head)->sph_root); \
+ } \
+ (head)->sph_root = (elm); \
+ return (NULL); \
+ } \
+ \
+ struct type* name##_SPLAY_REMOVE(struct name* head, struct type* elm) { \
+ struct type* __tmp; \
+ if (SPLAY_EMPTY(head)) \
+ return (NULL); \
+ name##_SPLAY(head, elm); \
+ if ((cmp)(elm, (head)->sph_root) == 0) { \
+ if (SPLAY_LEFT((head)->sph_root, field) == NULL) { \
+ (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field); \
+ } else { \
+ __tmp = SPLAY_RIGHT((head)->sph_root, field); \
+ (head)->sph_root = SPLAY_LEFT((head)->sph_root, field); \
+ name##_SPLAY(head, elm); \
+ SPLAY_RIGHT((head)->sph_root, field) = __tmp; \
+ } \
+ return (elm); \
+ } \
+ return (NULL); \
+ } \
+ \
+ void name##_SPLAY(struct name* head, struct type* elm) { \
+ struct type __node, *__left, *__right, *__tmp; \
+ int __comp; \
+ \
+ SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL; \
+ __left = __right = &__node; \
+ \
+ while ((__comp = (cmp)(elm, (head)->sph_root)) != 0) { \
+ if (__comp < 0) { \
+ __tmp = SPLAY_LEFT((head)->sph_root, field); \
+ if (__tmp == NULL) \
+ break; \
+ if ((cmp)(elm, __tmp) < 0) { \
+ SPLAY_ROTATE_RIGHT(head, __tmp, field); \
+ if (SPLAY_LEFT((head)->sph_root, field) == NULL) \
+ break; \
+ } \
+ SPLAY_LINKLEFT(head, __right, field); \
+ } else if (__comp > 0) { \
+ __tmp = SPLAY_RIGHT((head)->sph_root, field); \
+ if (__tmp == NULL) \
+ break; \
+ if ((cmp)(elm, __tmp) > 0) { \
+ SPLAY_ROTATE_LEFT(head, __tmp, field); \
+ if (SPLAY_RIGHT((head)->sph_root, field) == NULL) \
+ break; \
+ } \
+ SPLAY_LINKRIGHT(head, __left, field); \
+ } \
+ } \
+ SPLAY_ASSEMBLE(head, &__node, __left, __right, field); \
+ } \
+ \
+ /* Splay with either the minimum or the maximum element \
+ * Used to find minimum or maximum element in tree. \
+ */ \
+ void name##_SPLAY_MINMAX(struct name* head, int __comp) { \
+ struct type __node, *__left, *__right, *__tmp; \
+ \
+ SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL; \
+ __left = __right = &__node; \
+ \
+ while (1) { \
+ if (__comp < 0) { \
+ __tmp = SPLAY_LEFT((head)->sph_root, field); \
+ if (__tmp == NULL) \
+ break; \
+ if (__comp < 0) { \
+ SPLAY_ROTATE_RIGHT(head, __tmp, field); \
+ if (SPLAY_LEFT((head)->sph_root, field) == NULL) \
+ break; \
+ } \
+ SPLAY_LINKLEFT(head, __right, field); \
+ } else if (__comp > 0) { \
+ __tmp = SPLAY_RIGHT((head)->sph_root, field); \
+ if (__tmp == NULL) \
+ break; \
+ if (__comp > 0) { \
+ SPLAY_ROTATE_LEFT(head, __tmp, field); \
+ if (SPLAY_RIGHT((head)->sph_root, field) == NULL) \
+ break; \
+ } \
+ SPLAY_LINKRIGHT(head, __left, field); \
+ } \
+ } \
+ SPLAY_ASSEMBLE(head, &__node, __left, __right, field); \
+ }
+
+#define SPLAY_NEGINF -1
+#define SPLAY_INF 1
+
+#define SPLAY_INSERT(name, x, y) name##_SPLAY_INSERT(x, y)
+#define SPLAY_REMOVE(name, x, y) name##_SPLAY_REMOVE(x, y)
+#define SPLAY_FIND(name, x, y) name##_SPLAY_FIND(x, y)
+#define SPLAY_NEXT(name, x, y) name##_SPLAY_NEXT(x, y)
+#define SPLAY_MIN(name, x) (SPLAY_EMPTY(x) ? NULL : name##_SPLAY_MIN_MAX(x, SPLAY_NEGINF))
+#define SPLAY_MAX(name, x) (SPLAY_EMPTY(x) ? NULL : name##_SPLAY_MIN_MAX(x, SPLAY_INF))
+
+#define SPLAY_FOREACH(x, name, head) \
+ for ((x) = SPLAY_MIN(name, head); (x) != NULL; (x) = SPLAY_NEXT(name, head, x))
+
+/* Macros that define a red-black tree */
+#define RB_HEAD(name, type) \
+ struct name { \
+ struct type* rbh_root; /* root of the tree */ \
+ }
+
+#define RB_INITIALIZER(root) \
+ { NULL }
+
+#define RB_INIT(root) \
+ do { \
+ (root)->rbh_root = NULL; \
+ } while (/*CONSTCOND*/ 0)
+
+#define RB_BLACK 0
+#define RB_RED 1
+#define RB_ENTRY(type) \
+ struct { \
+ struct type* rbe_left; /* left element */ \
+ struct type* rbe_right; /* right element */ \
+ struct type* rbe_parent; /* parent element */ \
+ int rbe_color; /* node color */ \
+ }
+
+#define RB_LEFT(elm, field) (elm)->field.rbe_left
+#define RB_RIGHT(elm, field) (elm)->field.rbe_right
+#define RB_PARENT(elm, field) (elm)->field.rbe_parent
+#define RB_COLOR(elm, field) (elm)->field.rbe_color
+#define RB_ROOT(head) (head)->rbh_root
+#define RB_EMPTY(head) (RB_ROOT(head) == NULL)
+
+#define RB_SET(elm, parent, field) \
+ do { \
+ RB_PARENT(elm, field) = parent; \
+ RB_LEFT(elm, field) = RB_RIGHT(elm, field) = NULL; \
+ RB_COLOR(elm, field) = RB_RED; \
+ } while (/*CONSTCOND*/ 0)
+
+#define RB_SET_BLACKRED(black, red, field) \
+ do { \
+ RB_COLOR(black, field) = RB_BLACK; \
+ RB_COLOR(red, field) = RB_RED; \
+ } while (/*CONSTCOND*/ 0)
+
+#ifndef RB_AUGMENT
+#define RB_AUGMENT(x) \
+ do { \
+ } while (0)
+#endif
+
+#define RB_ROTATE_LEFT(head, elm, tmp, field) \
+ do { \
+ (tmp) = RB_RIGHT(elm, field); \
+ if ((RB_RIGHT(elm, field) = RB_LEFT(tmp, field)) != NULL) { \
+ RB_PARENT(RB_LEFT(tmp, field), field) = (elm); \
+ } \
+ RB_AUGMENT(elm); \
+ if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) { \
+ if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \
+ RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \
+ else \
+ RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \
+ } else \
+ (head)->rbh_root = (tmp); \
+ RB_LEFT(tmp, field) = (elm); \
+ RB_PARENT(elm, field) = (tmp); \
+ RB_AUGMENT(tmp); \
+ if ((RB_PARENT(tmp, field))) \
+ RB_AUGMENT(RB_PARENT(tmp, field)); \
+ } while (/*CONSTCOND*/ 0)
+
+#define RB_ROTATE_RIGHT(head, elm, tmp, field) \
+ do { \
+ (tmp) = RB_LEFT(elm, field); \
+ if ((RB_LEFT(elm, field) = RB_RIGHT(tmp, field)) != NULL) { \
+ RB_PARENT(RB_RIGHT(tmp, field), field) = (elm); \
+ } \
+ RB_AUGMENT(elm); \
+ if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) { \
+ if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \
+ RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \
+ else \
+ RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \
+ } else \
+ (head)->rbh_root = (tmp); \
+ RB_RIGHT(tmp, field) = (elm); \
+ RB_PARENT(elm, field) = (tmp); \
+ RB_AUGMENT(tmp); \
+ if ((RB_PARENT(tmp, field))) \
+ RB_AUGMENT(RB_PARENT(tmp, field)); \
+ } while (/*CONSTCOND*/ 0)
+
+/* Generates prototypes and inline functions */
+#define RB_PROTOTYPE(name, type, field, cmp) RB_PROTOTYPE_INTERNAL(name, type, field, cmp, )
+#define RB_PROTOTYPE_STATIC(name, type, field, cmp) \
+ RB_PROTOTYPE_INTERNAL(name, type, field, cmp, static)
+#define RB_PROTOTYPE_INTERNAL(name, type, field, cmp, attr) \
+ RB_PROTOTYPE_INSERT_COLOR(name, type, attr); \
+ RB_PROTOTYPE_REMOVE_COLOR(name, type, attr); \
+ RB_PROTOTYPE_INSERT(name, type, attr); \
+ RB_PROTOTYPE_REMOVE(name, type, attr); \
+ RB_PROTOTYPE_FIND(name, type, attr); \
+ RB_PROTOTYPE_NFIND(name, type, attr); \
+ RB_PROTOTYPE_FIND_LIGHT(name, type, attr); \
+ RB_PROTOTYPE_NFIND_LIGHT(name, type, attr); \
+ RB_PROTOTYPE_NEXT(name, type, attr); \
+ RB_PROTOTYPE_PREV(name, type, attr); \
+ RB_PROTOTYPE_MINMAX(name, type, attr);
+#define RB_PROTOTYPE_INSERT_COLOR(name, type, attr) \
+ attr void name##_RB_INSERT_COLOR(struct name*, struct type*)
+#define RB_PROTOTYPE_REMOVE_COLOR(name, type, attr) \
+ attr void name##_RB_REMOVE_COLOR(struct name*, struct type*, struct type*)
+#define RB_PROTOTYPE_REMOVE(name, type, attr) \
+ attr struct type* name##_RB_REMOVE(struct name*, struct type*)
+#define RB_PROTOTYPE_INSERT(name, type, attr) \
+ attr struct type* name##_RB_INSERT(struct name*, struct type*)
+#define RB_PROTOTYPE_FIND(name, type, attr) \
+ attr struct type* name##_RB_FIND(struct name*, struct type*)
+#define RB_PROTOTYPE_NFIND(name, type, attr) \
+ attr struct type* name##_RB_NFIND(struct name*, struct type*)
+#define RB_PROTOTYPE_FIND_LIGHT(name, type, attr) \
+ attr struct type* name##_RB_FIND_LIGHT(struct name*, const void*)
+#define RB_PROTOTYPE_NFIND_LIGHT(name, type, attr) \
+ attr struct type* name##_RB_NFIND_LIGHT(struct name*, const void*)
+#define RB_PROTOTYPE_NEXT(name, type, attr) attr struct type* name##_RB_NEXT(struct type*)
+#define RB_PROTOTYPE_PREV(name, type, attr) attr struct type* name##_RB_PREV(struct type*)
+#define RB_PROTOTYPE_MINMAX(name, type, attr) attr struct type* name##_RB_MINMAX(struct name*, int)
+
+/* Main rb operation.
+ * Moves node close to the key of elm to top
+ */
+#define RB_GENERATE_WITHOUT_COMPARE(name, type, field) \
+ RB_GENERATE_WITHOUT_COMPARE_INTERNAL(name, type, field, )
+#define RB_GENERATE_WITHOUT_COMPARE_STATIC(name, type, field) \
+ RB_GENERATE_WITHOUT_COMPARE_INTERNAL(name, type, field, static)
+#define RB_GENERATE_WITHOUT_COMPARE_INTERNAL(name, type, field, attr) \
+ RB_GENERATE_REMOVE_COLOR(name, type, field, attr) \
+ RB_GENERATE_REMOVE(name, type, field, attr) \
+ RB_GENERATE_NEXT(name, type, field, attr) \
+ RB_GENERATE_PREV(name, type, field, attr) \
+ RB_GENERATE_MINMAX(name, type, field, attr)
+
+#define RB_GENERATE_WITH_COMPARE(name, type, field, cmp, lcmp) \
+ RB_GENERATE_WITH_COMPARE_INTERNAL(name, type, field, cmp, lcmp, )
+#define RB_GENERATE_WITH_COMPARE_STATIC(name, type, field, cmp, lcmp) \
+ RB_GENERATE_WITH_COMPARE_INTERNAL(name, type, field, cmp, lcmp, static)
+#define RB_GENERATE_WITH_COMPARE_INTERNAL(name, type, field, cmp, lcmp, attr) \
+ RB_GENERATE_INSERT_COLOR(name, type, field, attr) \
+ RB_GENERATE_INSERT(name, type, field, cmp, attr) \
+ RB_GENERATE_FIND(name, type, field, cmp, attr) \
+ RB_GENERATE_NFIND(name, type, field, cmp, attr) \
+ RB_GENERATE_FIND_LIGHT(name, type, field, lcmp, attr) \
+ RB_GENERATE_NFIND_LIGHT(name, type, field, lcmp, attr)
+
+#define RB_GENERATE_ALL(name, type, field, cmp) RB_GENERATE_ALL_INTERNAL(name, type, field, cmp, )
+#define RB_GENERATE_ALL_STATIC(name, type, field, cmp) \
+ RB_GENERATE_ALL_INTERNAL(name, type, field, cmp, static)
+#define RB_GENERATE_ALL_INTERNAL(name, type, field, cmp, attr) \
+ RB_GENERATE_WITHOUT_COMPARE_INTERNAL(name, type, field, attr) \
+ RB_GENERATE_WITH_COMPARE_INTERNAL(name, type, field, cmp, attr)
+
+#define RB_GENERATE_INSERT_COLOR(name, type, field, attr) \
+ attr void name##_RB_INSERT_COLOR(struct name* head, struct type* elm) { \
+ struct type *parent, *gparent, *tmp; \
+ while ((parent = RB_PARENT(elm, field)) != NULL && RB_COLOR(parent, field) == RB_RED) { \
+ gparent = RB_PARENT(parent, field); \
+ if (parent == RB_LEFT(gparent, field)) { \
+ tmp = RB_RIGHT(gparent, field); \
+ if (tmp && RB_COLOR(tmp, field) == RB_RED) { \
+ RB_COLOR(tmp, field) = RB_BLACK; \
+ RB_SET_BLACKRED(parent, gparent, field); \
+ elm = gparent; \
+ continue; \
+ } \
+ if (RB_RIGHT(parent, field) == elm) { \
+ RB_ROTATE_LEFT(head, parent, tmp, field); \
+ tmp = parent; \
+ parent = elm; \
+ elm = tmp; \
+ } \
+ RB_SET_BLACKRED(parent, gparent, field); \
+ RB_ROTATE_RIGHT(head, gparent, tmp, field); \
+ } else { \
+ tmp = RB_LEFT(gparent, field); \
+ if (tmp && RB_COLOR(tmp, field) == RB_RED) { \
+ RB_COLOR(tmp, field) = RB_BLACK; \
+ RB_SET_BLACKRED(parent, gparent, field); \
+ elm = gparent; \
+ continue; \
+ } \
+ if (RB_LEFT(parent, field) == elm) { \
+ RB_ROTATE_RIGHT(head, parent, tmp, field); \
+ tmp = parent; \
+ parent = elm; \
+ elm = tmp; \
+ } \
+ RB_SET_BLACKRED(parent, gparent, field); \
+ RB_ROTATE_LEFT(head, gparent, tmp, field); \
+ } \
+ } \
+ RB_COLOR(head->rbh_root, field) = RB_BLACK; \
+ }
+
+#define RB_GENERATE_REMOVE_COLOR(name, type, field, attr) \
+ attr void name##_RB_REMOVE_COLOR(struct name* head, struct type* parent, struct type* elm) { \
+ struct type* tmp; \
+ while ((elm == NULL || RB_COLOR(elm, field) == RB_BLACK) && elm != RB_ROOT(head)) { \
+ if (RB_LEFT(parent, field) == elm) { \
+ tmp = RB_RIGHT(parent, field); \
+ if (RB_COLOR(tmp, field) == RB_RED) { \
+ RB_SET_BLACKRED(tmp, parent, field); \
+ RB_ROTATE_LEFT(head, parent, tmp, field); \
+ tmp = RB_RIGHT(parent, field); \
+ } \
+ if ((RB_LEFT(tmp, field) == NULL || \
+ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) && \
+ (RB_RIGHT(tmp, field) == NULL || \
+ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) { \
+ RB_COLOR(tmp, field) = RB_RED; \
+ elm = parent; \
+ parent = RB_PARENT(elm, field); \
+ } else { \
+ if (RB_RIGHT(tmp, field) == NULL || \
+ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK) { \
+ struct type* oleft; \
+ if ((oleft = RB_LEFT(tmp, field)) != NULL) \
+ RB_COLOR(oleft, field) = RB_BLACK; \
+ RB_COLOR(tmp, field) = RB_RED; \
+ RB_ROTATE_RIGHT(head, tmp, oleft, field); \
+ tmp = RB_RIGHT(parent, field); \
+ } \
+ RB_COLOR(tmp, field) = RB_COLOR(parent, field); \
+ RB_COLOR(parent, field) = RB_BLACK; \
+ if (RB_RIGHT(tmp, field)) \
+ RB_COLOR(RB_RIGHT(tmp, field), field) = RB_BLACK; \
+ RB_ROTATE_LEFT(head, parent, tmp, field); \
+ elm = RB_ROOT(head); \
+ break; \
+ } \
+ } else { \
+ tmp = RB_LEFT(parent, field); \
+ if (RB_COLOR(tmp, field) == RB_RED) { \
+ RB_SET_BLACKRED(tmp, parent, field); \
+ RB_ROTATE_RIGHT(head, parent, tmp, field); \
+ tmp = RB_LEFT(parent, field); \
+ } \
+ if ((RB_LEFT(tmp, field) == NULL || \
+ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) && \
+ (RB_RIGHT(tmp, field) == NULL || \
+ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) { \
+ RB_COLOR(tmp, field) = RB_RED; \
+ elm = parent; \
+ parent = RB_PARENT(elm, field); \
+ } else { \
+ if (RB_LEFT(tmp, field) == NULL || \
+ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) { \
+ struct type* oright; \
+ if ((oright = RB_RIGHT(tmp, field)) != NULL) \
+ RB_COLOR(oright, field) = RB_BLACK; \
+ RB_COLOR(tmp, field) = RB_RED; \
+ RB_ROTATE_LEFT(head, tmp, oright, field); \
+ tmp = RB_LEFT(parent, field); \
+ } \
+ RB_COLOR(tmp, field) = RB_COLOR(parent, field); \
+ RB_COLOR(parent, field) = RB_BLACK; \
+ if (RB_LEFT(tmp, field)) \
+ RB_COLOR(RB_LEFT(tmp, field), field) = RB_BLACK; \
+ RB_ROTATE_RIGHT(head, parent, tmp, field); \
+ elm = RB_ROOT(head); \
+ break; \
+ } \
+ } \
+ } \
+ if (elm) \
+ RB_COLOR(elm, field) = RB_BLACK; \
+ }
+
+#define RB_GENERATE_REMOVE(name, type, field, attr) \
+ attr struct type* name##_RB_REMOVE(struct name* head, struct type* elm) { \
+ struct type *child, *parent, *old = elm; \
+ int color; \
+ if (RB_LEFT(elm, field) == NULL) \
+ child = RB_RIGHT(elm, field); \
+ else if (RB_RIGHT(elm, field) == NULL) \
+ child = RB_LEFT(elm, field); \
+ else { \
+ struct type* left; \
+ elm = RB_RIGHT(elm, field); \
+ while ((left = RB_LEFT(elm, field)) != NULL) \
+ elm = left; \
+ child = RB_RIGHT(elm, field); \
+ parent = RB_PARENT(elm, field); \
+ color = RB_COLOR(elm, field); \
+ if (child) \
+ RB_PARENT(child, field) = parent; \
+ if (parent) { \
+ if (RB_LEFT(parent, field) == elm) \
+ RB_LEFT(parent, field) = child; \
+ else \
+ RB_RIGHT(parent, field) = child; \
+ RB_AUGMENT(parent); \
+ } else \
+ RB_ROOT(head) = child; \
+ if (RB_PARENT(elm, field) == old) \
+ parent = elm; \
+ (elm)->field = (old)->field; \
+ if (RB_PARENT(old, field)) { \
+ if (RB_LEFT(RB_PARENT(old, field), field) == old) \
+ RB_LEFT(RB_PARENT(old, field), field) = elm; \
+ else \
+ RB_RIGHT(RB_PARENT(old, field), field) = elm; \
+ RB_AUGMENT(RB_PARENT(old, field)); \
+ } else \
+ RB_ROOT(head) = elm; \
+ RB_PARENT(RB_LEFT(old, field), field) = elm; \
+ if (RB_RIGHT(old, field)) \
+ RB_PARENT(RB_RIGHT(old, field), field) = elm; \
+ if (parent) { \
+ left = parent; \
+ do { \
+ RB_AUGMENT(left); \
+ } while ((left = RB_PARENT(left, field)) != NULL); \
+ } \
+ goto color; \
+ } \
+ parent = RB_PARENT(elm, field); \
+ color = RB_COLOR(elm, field); \
+ if (child) \
+ RB_PARENT(child, field) = parent; \
+ if (parent) { \
+ if (RB_LEFT(parent, field) == elm) \
+ RB_LEFT(parent, field) = child; \
+ else \
+ RB_RIGHT(parent, field) = child; \
+ RB_AUGMENT(parent); \
+ } else \
+ RB_ROOT(head) = child; \
+ color: \
+ if (color == RB_BLACK) \
+ name##_RB_REMOVE_COLOR(head, parent, child); \
+ return (old); \
+ }
+
+#define RB_GENERATE_INSERT(name, type, field, cmp, attr) \
+ /* Inserts a node into the RB tree */ \
+ attr struct type* name##_RB_INSERT(struct name* head, struct type* elm) { \
+ struct type* tmp; \
+ struct type* parent = NULL; \
+ int comp = 0; \
+ tmp = RB_ROOT(head); \
+ while (tmp) { \
+ parent = tmp; \
+ comp = (cmp)(elm, parent); \
+ if (comp < 0) \
+ tmp = RB_LEFT(tmp, field); \
+ else if (comp > 0) \
+ tmp = RB_RIGHT(tmp, field); \
+ else \
+ return (tmp); \
+ } \
+ RB_SET(elm, parent, field); \
+ if (parent != NULL) { \
+ if (comp < 0) \
+ RB_LEFT(parent, field) = elm; \
+ else \
+ RB_RIGHT(parent, field) = elm; \
+ RB_AUGMENT(parent); \
+ } else \
+ RB_ROOT(head) = elm; \
+ name##_RB_INSERT_COLOR(head, elm); \
+ return (NULL); \
+ }
+
+#define RB_GENERATE_FIND(name, type, field, cmp, attr) \
+ /* Finds the node with the same key as elm */ \
+ attr struct type* name##_RB_FIND(struct name* head, struct type* elm) { \
+ struct type* tmp = RB_ROOT(head); \
+ int comp; \
+ while (tmp) { \
+ comp = cmp(elm, tmp); \
+ if (comp < 0) \
+ tmp = RB_LEFT(tmp, field); \
+ else if (comp > 0) \
+ tmp = RB_RIGHT(tmp, field); \
+ else \
+ return (tmp); \
+ } \
+ return (NULL); \
+ }
+
+#define RB_GENERATE_NFIND(name, type, field, cmp, attr) \
+ /* Finds the first node greater than or equal to the search key */ \
+ attr struct type* name##_RB_NFIND(struct name* head, struct type* elm) { \
+ struct type* tmp = RB_ROOT(head); \
+ struct type* res = NULL; \
+ int comp; \
+ while (tmp) { \
+ comp = cmp(elm, tmp); \
+ if (comp < 0) { \
+ res = tmp; \
+ tmp = RB_LEFT(tmp, field); \
+ } else if (comp > 0) \
+ tmp = RB_RIGHT(tmp, field); \
+ else \
+ return (tmp); \
+ } \
+ return (res); \
+ }
+
+#define RB_GENERATE_FIND_LIGHT(name, type, field, lcmp, attr) \
+ /* Finds the node with the same key as elm */ \
+ attr struct type* name##_RB_FIND_LIGHT(struct name* head, const void* lelm) { \
+ struct type* tmp = RB_ROOT(head); \
+ int comp; \
+ while (tmp) { \
+ comp = lcmp(lelm, tmp); \
+ if (comp < 0) \
+ tmp = RB_LEFT(tmp, field); \
+ else if (comp > 0) \
+ tmp = RB_RIGHT(tmp, field); \
+ else \
+ return (tmp); \
+ } \
+ return (NULL); \
+ }
+
+#define RB_GENERATE_NFIND_LIGHT(name, type, field, lcmp, attr) \
+ /* Finds the first node greater than or equal to the search key */ \
+ attr struct type* name##_RB_NFIND_LIGHT(struct name* head, const void* lelm) { \
+ struct type* tmp = RB_ROOT(head); \
+ struct type* res = NULL; \
+ int comp; \
+ while (tmp) { \
+ comp = lcmp(lelm, tmp); \
+ if (comp < 0) { \
+ res = tmp; \
+ tmp = RB_LEFT(tmp, field); \
+ } else if (comp > 0) \
+ tmp = RB_RIGHT(tmp, field); \
+ else \
+ return (tmp); \
+ } \
+ return (res); \
+ }
+
+#define RB_GENERATE_NEXT(name, type, field, attr) \
+ /* ARGSUSED */ \
+ attr struct type* name##_RB_NEXT(struct type* elm) { \
+ if (RB_RIGHT(elm, field)) { \
+ elm = RB_RIGHT(elm, field); \
+ while (RB_LEFT(elm, field)) \
+ elm = RB_LEFT(elm, field); \
+ } else { \
+ if (RB_PARENT(elm, field) && (elm == RB_LEFT(RB_PARENT(elm, field), field))) \
+ elm = RB_PARENT(elm, field); \
+ else { \
+ while (RB_PARENT(elm, field) && (elm == RB_RIGHT(RB_PARENT(elm, field), field))) \
+ elm = RB_PARENT(elm, field); \
+ elm = RB_PARENT(elm, field); \
+ } \
+ } \
+ return (elm); \
+ }
+
+#define RB_GENERATE_PREV(name, type, field, attr) \
+ /* ARGSUSED */ \
+ attr struct type* name##_RB_PREV(struct type* elm) { \
+ if (RB_LEFT(elm, field)) { \
+ elm = RB_LEFT(elm, field); \
+ while (RB_RIGHT(elm, field)) \
+ elm = RB_RIGHT(elm, field); \
+ } else { \
+ if (RB_PARENT(elm, field) && (elm == RB_RIGHT(RB_PARENT(elm, field), field))) \
+ elm = RB_PARENT(elm, field); \
+ else { \
+ while (RB_PARENT(elm, field) && (elm == RB_LEFT(RB_PARENT(elm, field), field))) \
+ elm = RB_PARENT(elm, field); \
+ elm = RB_PARENT(elm, field); \
+ } \
+ } \
+ return (elm); \
+ }
+
+#define RB_GENERATE_MINMAX(name, type, field, attr) \
+ attr struct type* name##_RB_MINMAX(struct name* head, int val) { \
+ struct type* tmp = RB_ROOT(head); \
+ struct type* parent = NULL; \
+ while (tmp) { \
+ parent = tmp; \
+ if (val < 0) \
+ tmp = RB_LEFT(tmp, field); \
+ else \
+ tmp = RB_RIGHT(tmp, field); \
+ } \
+ return (parent); \
+ }
+
+#define RB_NEGINF -1
+#define RB_INF 1
+
+#define RB_INSERT(name, x, y) name##_RB_INSERT(x, y)
+#define RB_REMOVE(name, x, y) name##_RB_REMOVE(x, y)
+#define RB_FIND(name, x, y) name##_RB_FIND(x, y)
+#define RB_NFIND(name, x, y) name##_RB_NFIND(x, y)
+#define RB_FIND_LIGHT(name, x, y) name##_RB_FIND_LIGHT(x, y)
+#define RB_NFIND_LIGHT(name, x, y) name##_RB_NFIND_LIGHT(x, y)
+#define RB_NEXT(name, x, y) name##_RB_NEXT(y)
+#define RB_PREV(name, x, y) name##_RB_PREV(y)
+#define RB_MIN(name, x) name##_RB_MINMAX(x, RB_NEGINF)
+#define RB_MAX(name, x) name##_RB_MINMAX(x, RB_INF)
+
+#define RB_FOREACH(x, name, head) \
+ for ((x) = RB_MIN(name, head); (x) != NULL; (x) = name##_RB_NEXT(x))
+
+#define RB_FOREACH_FROM(x, name, y) \
+ for ((x) = (y); ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL); (x) = (y))
+
+#define RB_FOREACH_SAFE(x, name, head, y) \
+ for ((x) = RB_MIN(name, head); ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL); \
+ (x) = (y))
+
+#define RB_FOREACH_REVERSE(x, name, head) \
+ for ((x) = RB_MAX(name, head); (x) != NULL; (x) = name##_RB_PREV(x))
+
+#define RB_FOREACH_REVERSE_FROM(x, name, y) \
+ for ((x) = (y); ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL); (x) = (y))
+
+#define RB_FOREACH_REVERSE_SAFE(x, name, head, y) \
+ for ((x) = RB_MAX(name, head); ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL); \
+ (x) = (y))
+
+#endif /* _SYS_TREE_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 09:57:50 +0200