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kern: use optimized red black tree finds for remaining holdouts

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This commit is contained in:
Michael Scire 2021-10-23 21:58:48 -07:00
parent 436613401a
commit 89926f44c6
5 changed files with 36 additions and 37 deletions
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12
libraries/libmesosphere/include/mesosphere/kern_k_auto_object.hpp
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@ -248,10 +248,16 @@ namespace ams::kern {
public:
constexpr ALWAYS_INLINE KAutoObjectWithList(util::ConstantInitializeTag) : KAutoObjectWithListBase(util::ConstantInitialize), m_list_node(util::ConstantInitialize) { /* ... */ }
ALWAYS_INLINE explicit KAutoObjectWithList() { /* ... */ }
public:
using RedBlackKeyType = u64;
static ALWAYS_INLINE int Compare(const KAutoObjectWithList &lhs, const KAutoObjectWithList &rhs) {
const u64 lid = lhs.GetId();
const u64 rid = rhs.GetId();
static constexpr ALWAYS_INLINE RedBlackKeyType GetRedBlackKey(const RedBlackKeyType &v) { return v; }
static constexpr ALWAYS_INLINE RedBlackKeyType GetRedBlackKey(const KAutoObjectWithList &v) { return v.GetId(); }
template<typename T> requires (std::same_as<T, KAutoObjectWithList> || std::same_as<T, RedBlackKeyType>)
static ALWAYS_INLINE int Compare(const T &lhs, const KAutoObjectWithList &rhs) {
const u64 lid = GetRedBlackKey(lhs);
const u64 rid = GetRedBlackKey(rhs);
if (lid < rid) {
return -1;

10
libraries/libmesosphere/include/mesosphere/kern_k_auto_object_container.hpp
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@ -33,17 +33,21 @@ namespace ams::kern {
explicit ListAccessor(KAutoObjectWithListContainer *container) : KScopedLightLock(container->m_lock), m_list(container->m_object_list) { /* ... */ }
explicit ListAccessor(KAutoObjectWithListContainer &container) : KScopedLightLock(container.m_lock), m_list(container.m_object_list) { /* ... */ }
typename ListType::iterator begin() const {
ALWAYS_INLINE typename ListType::iterator begin() const {
return m_list.begin();
}
typename ListType::iterator end() const {
ALWAYS_INLINE typename ListType::iterator end() const {
return m_list.end();
}
typename ListType::iterator find(typename ListType::const_reference ref) const {
ALWAYS_INLINE typename ListType::iterator find(typename ListType::const_reference ref) const {
return m_list.find(ref);
}
ALWAYS_INLINE typename ListType::iterator find_key(typename ListType::const_key_reference ref) const {
return m_list.find_key(ref);
}
};
friend class ListAccessor;

12
libraries/libmesosphere/include/mesosphere/kern_k_thread_local_page.hpp
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@ -42,10 +42,16 @@ namespace ams::kern {
explicit KThreadLocalPage() : KThreadLocalPage(Null<KProcessAddress>) { /* ... */ }
constexpr ALWAYS_INLINE KProcessAddress GetAddress() const { return m_virt_addr; }
public:
using RedBlackKeyType = KProcessAddress;
static constexpr ALWAYS_INLINE int Compare(const KThreadLocalPage &lhs, const KThreadLocalPage &rhs) {
const KProcessAddress lval = lhs.GetAddress();
const KProcessAddress rval = rhs.GetAddress();
static constexpr ALWAYS_INLINE RedBlackKeyType GetRedBlackKey(const RedBlackKeyType &v) { return v; }
static constexpr ALWAYS_INLINE RedBlackKeyType GetRedBlackKey(const KThreadLocalPage &v) { return v.GetAddress(); }
template<typename T> requires (std::same_as<T, KThreadLocalPage> || std::same_as<T, RedBlackKeyType>)
static constexpr ALWAYS_INLINE int Compare(const T &lhs, const KThreadLocalPage &rhs) {
const KProcessAddress lval = GetRedBlackKey(lhs);
const KProcessAddress rval = GetRedBlackKey(rhs);
if (lval < rval) {
return -1;

8
libraries/libmesosphere/source/kern_k_process.cpp
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@ -705,10 +705,10 @@ namespace ams::kern {
KScopedSchedulerLock sl;
/* Try to find the page in the partially used list. */
auto it = m_partially_used_tlp_tree.find(KThreadLocalPage(util::AlignDown(GetInteger(addr), PageSize)));
auto it = m_partially_used_tlp_tree.find_key(util::AlignDown(GetInteger(addr), PageSize));
if (it == m_partially_used_tlp_tree.end()) {
/* If we don't find it, it has to be in the fully used list. */
it = m_fully_used_tlp_tree.find(KThreadLocalPage(util::AlignDown(GetInteger(addr), PageSize)));
it = m_fully_used_tlp_tree.find_key(util::AlignDown(GetInteger(addr), PageSize));
R_UNLESS(it != m_fully_used_tlp_tree.end(), svc::ResultInvalidAddress());
/* Release the region. */
@ -749,9 +749,9 @@ namespace ams::kern {
KThreadLocalPage *tlp = nullptr;
{
KScopedSchedulerLock sl;
if (auto it = m_partially_used_tlp_tree.find(KThreadLocalPage(util::AlignDown(GetInteger(addr), PageSize))); it != m_partially_used_tlp_tree.end()) {
if (auto it = m_partially_used_tlp_tree.find_key(util::AlignDown(GetInteger(addr), PageSize)); it != m_partially_used_tlp_tree.end()) {
tlp = std::addressof(*it);
} else if (auto it = m_fully_used_tlp_tree.find(KThreadLocalPage(util::AlignDown(GetInteger(addr), PageSize))); it != m_fully_used_tlp_tree.end()) {
} else if (auto it = m_fully_used_tlp_tree.find_key(util::AlignDown(GetInteger(addr), PageSize)); it != m_fully_used_tlp_tree.end()) {
tlp = std::addressof(*it);
} else {
return nullptr;

31
libraries/libmesosphere/source/kern_k_thread.cpp
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@ -1324,33 +1324,16 @@ namespace ams::kern {
KThread::ListAccessor accessor;
const auto end = accessor.end();
/* Define helper object to find the thread. */
class IdObjectHelper : public KAutoObjectWithListContainer::ListType::value_type {
private:
u64 m_id;
public:
explicit IdObjectHelper(u64 id) : m_id(id) { /* ... */ }
virtual u64 GetId() const override { return m_id; }
};
/* Find the object with the right id. */
const auto it = accessor.find(IdObjectHelper(thread_id));
/* Check to make sure we found the thread. */
if (it == end) {
return nullptr;
if (const auto it = accessor.find_key(thread_id); it != end) {
/* Try to open the thread. */
if (KThread *thread = static_cast<KThread *>(std::addressof(*it)); AMS_LIKELY(thread->Open())) {
MESOSPHERE_ASSERT(thread->GetId() == thread_id);
return thread;
}
}
/* Get the thread. */
KThread *thread = static_cast<KThread *>(std::addressof(*it));
/* Open the thread. */
if (AMS_LIKELY(thread->Open())) {
MESOSPHERE_ASSERT(thread->GetId() == thread_id);
return thread;
}
/* We failed to find the thread. */
/* We failed to find or couldn't open the thread. */
return nullptr;
}