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Code Issues Releases Activity

kern: KLinkedList no longer exists

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This commit is contained in:
Michael Scire 2021-04-06 23:33:33 -07:00 committed by SciresM
parent b3bd443636
commit 962cf97150
6 changed files with 5 additions and 270 deletions
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2
libraries/libmesosphere/include/mesosphere/kern_k_condition_variable.hpp
View file

@ -36,7 +36,7 @@ namespace ams::kern {
void Signal(uintptr_t cv_key, s32 count);
Result Wait(KProcessAddress addr, uintptr_t key, u32 value, s64 timeout);
private:
KThread *SignalImpl(KThread *thread);
void SignalImpl(KThread *thread);
};
ALWAYS_INLINE void BeforeUpdatePriority(KConditionVariable::ThreadTree *tree, KThread *thread) {

236
libraries/libmesosphere/include/mesosphere/kern_k_linked_list.hpp
View file

@ -1,236 +0,0 @@
/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <mesosphere/kern_common.hpp>
#include <mesosphere/kern_k_typed_address.hpp>
#include <mesosphere/kern_slab_helpers.hpp>
namespace ams::kern {
class KLinkedListNode : public util::IntrusiveListBaseNode<KLinkedListNode>, public KSlabAllocated<KLinkedListNode> {
private:
void *m_item;
public:
constexpr KLinkedListNode() : util::IntrusiveListBaseNode<KLinkedListNode>(), m_item(nullptr) { MESOSPHERE_ASSERT_THIS(); }
constexpr void Initialize(void *it) {
MESOSPHERE_ASSERT_THIS();
m_item = it;
}
constexpr void *GetItem() const {
return m_item;
}
};
static_assert(sizeof(KLinkedListNode) == sizeof(util::IntrusiveListNode) + sizeof(void *));
template<typename T>
class KLinkedList : private util::IntrusiveListBaseTraits<KLinkedListNode>::ListType {
private:
using BaseList = util::IntrusiveListBaseTraits<KLinkedListNode>::ListType;
public:
template<bool Const>
class Iterator;
using value_type = T;
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>;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
template<bool Const>
class Iterator {
private:
using BaseIterator = BaseList::Iterator<Const>;
friend class KLinkedList;
public:
using iterator_category = std::bidirectional_iterator_tag;
using value_type = typename KLinkedList::value_type;
using difference_type = typename KLinkedList::difference_type;
using pointer = typename std::conditional<Const, KLinkedList::const_pointer, KLinkedList::pointer>::type;
using reference = typename std::conditional<Const, KLinkedList::const_reference, KLinkedList::reference>::type;
private:
BaseIterator m_base_it;
public:
explicit Iterator(BaseIterator it) : m_base_it(it) { /* ... */ }
pointer GetItem() const {
return static_cast<pointer>(m_base_it->GetItem());
}
bool operator==(const Iterator &rhs) const {
return m_base_it == rhs.m_base_it;
}
bool operator!=(const Iterator &rhs) const {
return !(*this == rhs);
}
pointer operator->() const {
return this->GetItem();
}
reference operator*() const {
return *this->GetItem();
}
Iterator &operator++() {
++m_base_it;
return *this;
}
Iterator &operator--() {
--m_base_it;
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>(m_base_it);
}
};
public:
constexpr KLinkedList() : BaseList() { /* ... */ }
~KLinkedList() {
/* Erase all elements. */
for (auto it = this->begin(); it != this->end(); it = this->erase(it)) {
/* ... */
}
/* Ensure we succeeded. */
MESOSPHERE_ASSERT(this->empty());
}
/* Iterator accessors. */
iterator begin() {
return iterator(BaseList::begin());
}
const_iterator begin() const {
return const_iterator(BaseList::begin());
}
iterator end() {
return iterator(BaseList::end());
}
const_iterator end() const {
return const_iterator(BaseList::end());
}
const_iterator cbegin() const {
return this->begin();
}
const_iterator cend() const {
return this->end();
}
reverse_iterator rbegin() {
return reverse_iterator(this->end());
}
const_reverse_iterator rbegin() const {
return const_reverse_iterator(this->end());
}
reverse_iterator rend() {
return reverse_iterator(this->begin());
}
const_reverse_iterator rend() const {
return const_reverse_iterator(this->begin());
}
const_reverse_iterator crbegin() const {
return this->rbegin();
}
const_reverse_iterator crend() const {
return this->rend();
}
/* Content management. */
using BaseList::empty;
using BaseList::size;
reference back() {
return *(--this->end());
}
const_reference back() const {
return *(--this->end());
}
reference front() {
return *this->begin();
}
const_reference front() const {
return *this->begin();
}
iterator insert(const_iterator pos, reference ref) {
KLinkedListNode *node = KLinkedListNode::Allocate();
MESOSPHERE_ABORT_UNLESS(node != nullptr);
node->Initialize(std::addressof(ref));
return iterator(BaseList::insert(pos.m_base_it, *node));
}
void push_back(reference ref) {
this->insert(this->end(), ref);
}
void push_front(reference ref) {
this->insert(this->begin(), ref);
}
void pop_back() {
this->erase(--this->end());
}
void pop_front() {
this->erase(this->begin());
}
iterator erase(const iterator pos) {
KLinkedListNode *freed_node = std::addressof(*pos.m_base_it);
iterator ret = iterator(BaseList::erase(pos.m_base_it));
KLinkedListNode::Free(freed_node);
return ret;
}
};
}

1
libraries/libmesosphere/include/mesosphere/kern_k_synchronization_object.hpp
View file

@ -16,7 +16,6 @@
#pragma once
#include <mesosphere/kern_k_auto_object.hpp>
#include <mesosphere/kern_slab_helpers.hpp>
#include <mesosphere/kern_k_linked_list.hpp>
namespace ams::kern {

3
libraries/libmesosphere/source/init/kern_init_slab_setup.cpp
View file

@ -22,7 +22,6 @@ namespace ams::kern::init {
#define FOREACH_SLAB_TYPE(HANDLER, ...) \
HANDLER(KProcess, (SLAB_COUNT(KProcess)), ## __VA_ARGS__) \
HANDLER(KThread, (SLAB_COUNT(KThread)), ## __VA_ARGS__) \
HANDLER(KLinkedListNode, (SLAB_COUNT(KThread)), ## __VA_ARGS__) \
HANDLER(KEvent, (SLAB_COUNT(KEvent)), ## __VA_ARGS__) \
HANDLER(KInterruptEvent, (SLAB_COUNT(KInterruptEvent)), ## __VA_ARGS__) \
HANDLER(KInterruptEventTask, (SLAB_COUNT(KInterruptEvent)), ## __VA_ARGS__) \
@ -77,7 +76,7 @@ namespace ams::kern::init {
namespace test {
constexpr size_t RequiredSizeForExtraThreadCount = SlabCountExtraKThread * (sizeof(KThread) + sizeof(KLinkedListNode) + (sizeof(KThreadLocalPage) / 8) + sizeof(KEventInfo));
constexpr size_t RequiredSizeForExtraThreadCount = SlabCountExtraKThread * (sizeof(KThread) + (sizeof(KThreadLocalPage) / 8) + sizeof(KEventInfo));
static_assert(RequiredSizeForExtraThreadCount <= KernelSlabHeapAdditionalSize);
}

32
libraries/libmesosphere/source/kern_k_condition_variable.cpp
View file

@ -118,7 +118,7 @@ namespace ams::kern {
return cur_thread->GetWaitResult(std::addressof(dummy));
}
KThread *KConditionVariable::SignalImpl(KThread *thread) {
void KConditionVariable::SignalImpl(KThread *thread) {
/* Check pre-conditions. */
MESOSPHERE_ASSERT(KScheduler::IsSchedulerLockedByCurrentThread());
@ -137,7 +137,6 @@ namespace ams::kern {
}
}
KThread *thread_to_close = nullptr;
if (AMS_LIKELY(can_access)) {
if (prev_tag == ams::svc::InvalidHandle) {
/* If nobody held the lock previously, we're all good. */
@ -150,7 +149,7 @@ namespace ams::kern {
if (AMS_LIKELY(owner_thread != nullptr)) {
/* Add the thread as a waiter on the owner. */
owner_thread->AddWaiter(thread);
thread_to_close = owner_thread;
owner_thread->Close();
} else {
/* The lock was tagged with a thread that doesn't exist. */
thread->SetSyncedObject(nullptr, svc::ResultInvalidState());
@ -162,17 +161,9 @@ namespace ams::kern {
thread->SetSyncedObject(nullptr, svc::ResultInvalidCurrentMemory());
thread->Wakeup();
}
return thread_to_close;
}
void KConditionVariable::Signal(uintptr_t cv_key, s32 count) {
/* Prepare for signaling. */
constexpr int MaxThreads = 16;
KLinkedList<KThread> thread_list;
KThread *thread_array[MaxThreads];
int num_to_close = 0;
/* Perform signaling. */
int num_waiters = 0;
{
@ -182,14 +173,7 @@ namespace ams::kern {
while ((it != m_tree.end()) && (count <= 0 || num_waiters < count) && (it->GetConditionVariableKey() == cv_key)) {
KThread *target_thread = std::addressof(*it);
if (KThread *thread = this->SignalImpl(target_thread); thread != nullptr) {
if (num_to_close < MaxThreads) {
thread_array[num_to_close++] = thread;
} else {
thread_list.push_back(*thread);
}
}
this->SignalImpl(target_thread);
it = m_tree.erase(it);
target_thread->ClearConditionVariable();
++num_waiters;
@ -201,16 +185,6 @@ namespace ams::kern {
WriteToUser(cv_key, std::addressof(has_waiter_flag));
}
}
/* Close threads in the array. */
for (auto i = 0; i < num_to_close; ++i) {
thread_array[i]->Close();
}
/* Close threads in the list. */
for (auto it = thread_list.begin(); it != thread_list.end(); it = thread_list.erase(it)) {
(*it).Close();
}
}
Result KConditionVariable::Wait(KProcessAddress addr, uintptr_t key, u32 value, s64 timeout) {

1
libraries/libmesosphere/source/kern_k_dump_object.cpp
View file

@ -345,7 +345,6 @@ namespace ams::kern::KDumpObject {
DUMP_KSLABOBJ(KDebug);
DUMP_KSLABOBJ(KSession);
DUMP_KSLABOBJ(KLightSession);
DUMP_KSLABOBJ(KLinkedListNode);
DUMP_KSLABOBJ(KThreadLocalPage);
DUMP_KSLABOBJ(KObjectName);
DUMP_KSLABOBJ(KEventInfo);