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hle: kernel: Migrate to KHandleTable.

This commit is contained in:
bunnei 2021-04-24 02:40:31 -07:00
parent 8f5052a514
commit 4b03e6e776
22 changed files with 503 additions and 381 deletions
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4
src/core/CMakeLists.txt
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@ -149,8 +149,6 @@ add_library(core STATIC
hle/kernel/svc_results.h
hle/kernel/global_scheduler_context.cpp
hle/kernel/global_scheduler_context.h
hle/kernel/handle_table.cpp
hle/kernel/handle_table.h
hle/kernel/hle_ipc.cpp
hle/kernel/hle_ipc.h
hle/kernel/init/init_slab_setup.cpp
@ -174,6 +172,8 @@ add_library(core STATIC
hle/kernel/k_condition_variable.h
hle/kernel/k_event.cpp
hle/kernel/k_event.h
hle/kernel/k_handle_table.cpp
hle/kernel/k_handle_table.h
hle/kernel/k_light_condition_variable.h
hle/kernel/k_light_lock.cpp
hle/kernel/k_light_lock.h

125
src/core/hle/kernel/handle_table.cpp
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@ -1,125 +0,0 @@
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <utility>
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/core.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/svc_results.h"
namespace Kernel {
namespace {
constexpr u16 GetSlot(Handle handle) {
return static_cast<u16>(handle >> 15);
}
constexpr u16 GetGeneration(Handle handle) {
return static_cast<u16>(handle & 0x7FFF);
}
} // Anonymous namespace
HandleTable::HandleTable(KernelCore& kernel) : kernel{kernel} {
Clear();
}
HandleTable::~HandleTable() = default;
ResultCode HandleTable::SetSize(s32 handle_table_size) {
if (static_cast<u32>(handle_table_size) > MAX_COUNT) {
LOG_ERROR(Kernel, "Handle table size {} is greater than {}", handle_table_size, MAX_COUNT);
return ResultOutOfMemory;
}
// Values less than or equal to zero indicate to use the maximum allowable
// size for the handle table in the actual kernel, so we ignore the given
// value in that case, since we assume this by default unless this function
// is called.
if (handle_table_size > 0) {
table_size = static_cast<u16>(handle_table_size);
}
return RESULT_SUCCESS;
}
ResultCode HandleTable::Add(Handle* out_handle, KAutoObject* obj, u16 type) {
ASSERT(obj != nullptr);
const u16 slot = next_free_slot;
if (slot >= table_size) {
LOG_ERROR(Kernel, "Unable to allocate Handle, too many slots in use.");
return ResultOutOfHandles;
}
next_free_slot = generations[slot];
const u16 generation = next_generation++;
// Overflow count so it fits in the 15 bits dedicated to the generation in the handle.
// Horizon OS uses zero to represent an invalid handle, so skip to 1.
if (next_generation >= (1 << 15)) {
next_generation = 1;
}
generations[slot] = generation;
objects[slot] = obj;
obj->Open();
*out_handle = generation | (slot << 15);
return RESULT_SUCCESS;
}
ResultVal<Handle> HandleTable::Duplicate(Handle handle) {
auto object = GetObject(handle);
if (object.IsNull()) {
LOG_ERROR(Kernel, "Tried to duplicate invalid handle: {:08X}", handle);
return ResultInvalidHandle;
}
Handle out_handle{};
R_TRY(Add(&out_handle, object.GetPointerUnsafe()));
return MakeResult(out_handle);
}
bool HandleTable::Remove(Handle handle) {
if (!IsValid(handle)) {
LOG_ERROR(Kernel, "Handle is not valid! handle={:08X}", handle);
return {};
}
const u16 slot = GetSlot(handle);
if (objects[slot]) {
objects[slot]->Close();
}
objects[slot] = nullptr;
generations[slot] = next_free_slot;
next_free_slot = slot;
return true;
}
bool HandleTable::IsValid(Handle handle) const {
const std::size_t slot = GetSlot(handle);
const u16 generation = GetGeneration(handle);
const bool is_object_valid = (objects[slot] != nullptr);
return slot < table_size && is_object_valid && generations[slot] == generation;
}
void HandleTable::Clear() {
for (u16 i = 0; i < table_size; ++i) {
generations[i] = static_cast<u16>(i + 1);
objects[i] = nullptr;
}
next_free_slot = 0;
}
} // namespace Kernel

212
src/core/hle/kernel/handle_table.h
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@ -1,212 +0,0 @@
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <cstddef>
#include <memory>
#include "common/common_types.h"
#include "core/hle/kernel/k_auto_object.h"
#include "core/hle/kernel/k_spin_lock.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/result.h"
namespace Kernel {
class KernelCore;
enum KernelHandle : Handle {
InvalidHandle = 0,
CurrentThread = 0xFFFF8000,
CurrentProcess = 0xFFFF8001,
};
/**
* This class allows the creation of Handles, which are references to objects that can be tested
* for validity and looked up. Here they are used to pass references to kernel objects to/from the
* emulated process. it has been designed so that it follows the same handle format and has
* approximately the same restrictions as the handle manager in the CTR-OS.
*
* Handles contain two sub-fields: a slot index (bits 31:15) and a generation value (bits 14:0).
* The slot index is used to index into the arrays in this class to access the data corresponding
* to the Handle.
*
* To prevent accidental use of a freed Handle whose slot has already been reused, a global counter
* is kept and incremented every time a Handle is created. This is the Handle's "generation". The
* value of the counter is stored into the Handle as well as in the handle table (in the
* "generations" array). When looking up a handle, the Handle's generation must match with the
* value stored on the class, otherwise the Handle is considered invalid.
*
* To find free slots when allocating a Handle without needing to scan the entire object array, the
* generations field of unallocated slots is re-purposed as a linked list of indices to free slots.
* When a Handle is created, an index is popped off the list and used for the new Handle. When it
* is destroyed, it is again pushed onto the list to be re-used by the next allocation. It is
* likely that this allocation strategy differs from the one used in CTR-OS, but this hasn't been
* verified and isn't likely to cause any problems.
*/
class HandleTable final : NonCopyable {
public:
/// This is the maximum limit of handles allowed per process in Horizon
static constexpr std::size_t MAX_COUNT = 1024;
explicit HandleTable(KernelCore& kernel);
~HandleTable();
/**
* Sets the number of handles that may be in use at one time
* for this handle table.
*
* @param handle_table_size The desired size to limit the handle table to.
*
* @returns an error code indicating if initialization was successful.
* If initialization was not successful, then ERR_OUT_OF_MEMORY
* will be returned.
*
* @pre handle_table_size must be within the range [0, 1024]
*/
ResultCode SetSize(s32 handle_table_size);
/**
* Returns a new handle that points to the same object as the passed in handle.
* @return The duplicated Handle or one of the following errors:
* - `ERR_INVALID_HANDLE`: an invalid handle was passed in.
* - Any errors returned by `Create()`.
*/
ResultVal<Handle> Duplicate(Handle handle);
/**
* Closes a handle, removing it from the table and decreasing the object's ref-count.
* @return `RESULT_SUCCESS` or one of the following errors:
* - `ERR_INVALID_HANDLE`: an invalid handle was passed in.
*/
bool Remove(Handle handle);
/// Checks if a handle is valid and points to an existing object.
bool IsValid(Handle handle) const;
template <typename T = KAutoObject>
KAutoObject* GetObjectImpl(Handle handle) const {
if (!IsValid(handle)) {
return nullptr;
}
auto* obj = objects[static_cast<u16>(handle >> 15)];
return obj->DynamicCast<T*>();
}
template <typename T = KAutoObject>
KScopedAutoObject<T> GetObject(Handle handle) const {
if (handle == CurrentThread) {
return kernel.CurrentScheduler()->GetCurrentThread()->DynamicCast<T*>();
} else if (handle == CurrentProcess) {
return kernel.CurrentProcess()->DynamicCast<T*>();
}
if (!IsValid(handle)) {
return nullptr;
}
auto* obj = objects[static_cast<u16>(handle >> 15)];
return obj->DynamicCast<T*>();
}
template <typename T = KAutoObject>
KScopedAutoObject<T> GetObjectWithoutPseudoHandle(Handle handle) const {
if (!IsValid(handle)) {
return nullptr;
}
auto* obj = objects[static_cast<u16>(handle >> 15)];
return obj->DynamicCast<T*>();
}
/// Closes all handles held in this table.
void Clear();
// NEW IMPL
template <typename T>
ResultCode Add(Handle* out_handle, T* obj) {
static_assert(std::is_base_of<KAutoObject, T>::value);
return this->Add(out_handle, obj, obj->GetTypeObj().GetClassToken());
}
ResultCode Add(Handle* out_handle, KAutoObject* obj, u16 type);
template <typename T>
bool GetMultipleObjects(T** out, const Handle* handles, size_t num_handles) const {
// Try to convert and open all the handles.
size_t num_opened;
{
// Lock the table.
KScopedSpinLock lk(lock);
for (num_opened = 0; num_opened < num_handles; num_opened++) {
// Get the current handle.
const auto cur_handle = handles[num_opened];
// Get the object for the current handle.
KAutoObject* cur_object = this->GetObjectImpl(cur_handle);
if (cur_object == nullptr) {
break;
}
// Cast the current object to the desired type.
T* cur_t = cur_object->DynamicCast<T*>();
if (cur_t == nullptr) {
break;
}
// Open a reference to the current object.
cur_t->Open();
out[num_opened] = cur_t;
}
}
// If we converted every object, succeed.
if (num_opened == num_handles) {
return true;
}
// If we didn't convert entry object, close the ones we opened.
for (size_t i = 0; i < num_opened; i++) {
out[i]->Close();
}
return false;
}
private:
/// Stores the Object referenced by the handle or null if the slot is empty.
std::array<KAutoObject*, MAX_COUNT> objects{};
/**
* The value of `next_generation` when the handle was created, used to check for validity. For
* empty slots, contains the index of the next free slot in the list.
*/
std::array<u16, MAX_COUNT> generations;
/**
* The limited size of the handle table. This can be specified by process
* capabilities in order to restrict the overall number of handles that
* can be created in a process instance
*/
u16 table_size = static_cast<u16>(MAX_COUNT);
/**
* Global counter of the number of created handles. Stored in `generations` when a handle is
* created, and wraps around to 1 when it hits 0x8000.
*/
u16 next_generation = 1;
/// Head of the free slots linked list.
u16 next_free_slot = 0;
mutable KSpinLock lock;
/// Underlying kernel instance that this handle table operates under.
KernelCore& kernel;
};
} // namespace Kernel

6
src/core/hle/kernel/hle_ipc.cpp
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@ -14,8 +14,8 @@
#include "common/common_types.h"
#include "common/logging/log.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/hle_ipc.h"
#include "core/hle/kernel/k_handle_table.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/k_readable_event.h"
#include "core/hle/kernel/k_scheduler.h"
@ -50,7 +50,7 @@ HLERequestContext::HLERequestContext(KernelCore& kernel_, Core::Memory::Memory&
HLERequestContext::~HLERequestContext() = default;
void HLERequestContext::ParseCommandBuffer(const HandleTable& handle_table, u32_le* src_cmdbuf,
void HLERequestContext::ParseCommandBuffer(const KHandleTable& handle_table, u32_le* src_cmdbuf,
bool incoming) {
IPC::RequestParser rp(src_cmdbuf);
command_header = rp.PopRaw<IPC::CommandHeader>();
@ -163,7 +163,7 @@ void HLERequestContext::ParseCommandBuffer(const HandleTable& handle_table, u32_
rp.Skip(1, false); // The command is actually an u64, but we don't use the high part.
}
ResultCode HLERequestContext::PopulateFromIncomingCommandBuffer(const HandleTable& handle_table,
ResultCode HLERequestContext::PopulateFromIncomingCommandBuffer(const KHandleTable& handle_table,
u32_le* src_cmdbuf) {
ParseCommandBuffer(handle_table, src_cmdbuf, true);
if (command_header->type == IPC::CommandType::Close) {

7
src/core/hle/kernel/hle_ipc.h
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@ -17,6 +17,7 @@
#include "common/swap.h"
#include "core/hle/ipc.h"
#include "core/hle/kernel/k_auto_object.h"
#include "core/hle/kernel/svc_common.h"
union ResultCode;
@ -35,9 +36,9 @@ class ServiceFrameworkBase;
namespace Kernel {
class Domain;
class HandleTable;
class HLERequestContext;
class KernelCore;
class KHandleTable;
class KProcess;
class KServerSession;
class KThread;
@ -121,7 +122,7 @@ public:
}
/// Populates this context with data from the requesting process/thread.
ResultCode PopulateFromIncomingCommandBuffer(const HandleTable& handle_table,
ResultCode PopulateFromIncomingCommandBuffer(const KHandleTable& handle_table,
u32_le* src_cmdbuf);
/// Writes data from this context back to the requesting process/thread.
@ -267,7 +268,7 @@ public:
private:
friend class IPC::ResponseBuilder;
void ParseCommandBuffer(const HandleTable& handle_table, u32_le* src_cmdbuf, bool incoming);
void ParseCommandBuffer(const KHandleTable& handle_table, u32_le* src_cmdbuf, bool incoming);
std::array<u32, IPC::COMMAND_BUFFER_LENGTH> cmd_buf;
Kernel::KServerSession* server_session{};

2
src/core/hle/kernel/k_auto_object.h
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@ -17,8 +17,6 @@ namespace Kernel {
class KernelCore;
class KProcess;
using Handle = u32;
#define KERNEL_AUTOOBJECT_TRAITS(CLASS, BASE_CLASS) \
NON_COPYABLE(CLASS); \
NON_MOVEABLE(CLASS); \

2
src/core/hle/kernel/k_condition_variable.cpp
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@ -179,7 +179,7 @@ KThread* KConditionVariable::SignalImpl(KThread* thread) {
KThread* thread_to_close = nullptr;
if (can_access) {
if (prev_tag == InvalidHandle) {
if (prev_tag == Svc::InvalidHandle) {
// If nobody held the lock previously, we're all good.
thread->SetSyncedObject(nullptr, RESULT_SUCCESS);
thread->Wakeup();

135
src/core/hle/kernel/k_handle_table.cpp Normal file
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@ -0,0 +1,135 @@
// Copyright 2021 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "core/hle/kernel/k_handle_table.h"
namespace Kernel {
KHandleTable::KHandleTable(KernelCore& kernel_) : kernel{kernel_} {}
KHandleTable ::~KHandleTable() = default;
ResultCode KHandleTable::Finalize() {
// Get the table and clear our record of it.
u16 saved_table_size = 0;
{
KScopedSpinLock lk(m_lock);
std::swap(m_table_size, saved_table_size);
}
// Close and free all entries.
for (size_t i = 0; i < saved_table_size; i++) {
if (KAutoObject* obj = m_objects[i]; obj != nullptr) {
obj->Close();
}
}
return RESULT_SUCCESS;
}
bool KHandleTable::Remove(Handle handle) {
// Don't allow removal of a pseudo-handle.
if (Svc::IsPseudoHandle(handle)) {
return false;
}
// Handles must not have reserved bits set.
const auto handle_pack = HandlePack(handle);
if (handle_pack.reserved != 0) {
return false;
}
// Find the object and free the entry.
KAutoObject* obj = nullptr;
{
KScopedSpinLock lk(m_lock);
if (this->IsValidHandle(handle)) {
const auto index = handle_pack.index;
obj = m_objects[index];
this->FreeEntry(index);
} else {
return false;
}
}
// Close the object.
obj->Close();
return true;
}
ResultCode KHandleTable::Add(Handle* out_handle, KAutoObject* obj, u16 type) {
KScopedSpinLock lk(m_lock);
// Never exceed our capacity.
R_UNLESS(m_count < m_table_size, ResultOutOfHandles);
// Allocate entry, set output handle.
{
const auto linear_id = this->AllocateLinearId();
const auto index = this->AllocateEntry();
m_entry_infos[index].info = {.linear_id = linear_id, .type = type};
m_objects[index] = obj;
obj->Open();
*out_handle = EncodeHandle(static_cast<u16>(index), linear_id);
}
return RESULT_SUCCESS;
}
ResultCode KHandleTable::Reserve(Handle* out_handle) {
KScopedSpinLock lk(m_lock);
// Never exceed our capacity.
R_UNLESS(m_count < m_table_size, ResultOutOfHandles);
*out_handle = EncodeHandle(static_cast<u16>(this->AllocateEntry()), this->AllocateLinearId());
return RESULT_SUCCESS;
}
void KHandleTable::Unreserve(Handle handle) {
KScopedSpinLock lk(m_lock);
// Unpack the handle.
const auto handle_pack = HandlePack(handle);
const auto index = handle_pack.index;
const auto linear_id = handle_pack.linear_id;
const auto reserved = handle_pack.reserved;
ASSERT(reserved == 0);
ASSERT(linear_id != 0);
if (index < m_table_size) {
// NOTE: This code does not check the linear id.
ASSERT(m_objects[index] == nullptr);
this->FreeEntry(index);
}
}
void KHandleTable::Register(Handle handle, KAutoObject* obj, u16 type) {
KScopedSpinLock lk(m_lock);
// Unpack the handle.
const auto handle_pack = HandlePack(handle);
const auto index = handle_pack.index;
const auto linear_id = handle_pack.linear_id;
const auto reserved = handle_pack.reserved;
ASSERT(reserved == 0);
ASSERT(linear_id != 0);
if (index < m_table_size) {
// Set the entry.
ASSERT(m_objects[index] == nullptr);
m_entry_infos[index].info = {.linear_id = static_cast<u16>(linear_id), .type = type};
m_objects[index] = obj;
obj->Open();
}
}
} // namespace Kernel

309
src/core/hle/kernel/k_handle_table.h Normal file
View File

@ -0,0 +1,309 @@
// Copyright 2021 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include "common/assert.h"
#include "common/bit_field.h"
#include "common/bit_util.h"
#include "common/common_types.h"
#include "core/hle/kernel/k_auto_object.h"
#include "core/hle/kernel/k_spin_lock.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/svc_common.h"
#include "core/hle/kernel/svc_results.h"
#include "core/hle/result.h"
namespace Kernel {
class KernelCore;
class KHandleTable {
NON_COPYABLE(KHandleTable);
NON_MOVEABLE(KHandleTable);
public:
static constexpr size_t MaxTableSize = 1024;
private:
union HandlePack {
u32 raw;
BitField<0, 15, u32> index;
BitField<15, 15, u32> linear_id;
BitField<30, 2, u32> reserved;
};
static constexpr u16 MinLinearId = 1;
static constexpr u16 MaxLinearId = 0x7FFF;
static constexpr Handle EncodeHandle(u16 index, u16 linear_id) {
HandlePack handle{};
handle.index.Assign(index);
handle.linear_id.Assign(linear_id);
handle.reserved.Assign(0);
return handle.raw;
}
union EntryInfo {
struct {
u16 linear_id;
u16 type;
} info;
s32 next_free_index;
constexpr u16 GetLinearId() const {
return info.linear_id;
}
constexpr u16 GetType() const {
return info.type;
}
constexpr s32 GetNextFreeIndex() const {
return next_free_index;
}
};
private:
std::array<EntryInfo, MaxTableSize> m_entry_infos{};
std::array<KAutoObject*, MaxTableSize> m_objects{};
s32 m_free_head_index{-1};
u16 m_table_size{};
u16 m_max_count{};
u16 m_next_linear_id{MinLinearId};
u16 m_count{};
mutable KSpinLock m_lock;
public:
explicit KHandleTable(KernelCore& kernel_);
~KHandleTable();
constexpr ResultCode Initialize(s32 size) {
R_UNLESS(size <= static_cast<s32>(MaxTableSize), ResultOutOfMemory);
// Initialize all fields.
m_max_count = 0;
m_table_size = static_cast<u16>((size <= 0) ? MaxTableSize : size);
m_next_linear_id = MinLinearId;
m_count = 0;
m_free_head_index = -1;
// Free all entries.
for (s32 i = 0; i < static_cast<s32>(m_table_size); ++i) {
m_objects[i] = nullptr;
m_entry_infos[i].next_free_index = i - 1;
m_free_head_index = i;
}
return RESULT_SUCCESS;
}
constexpr size_t GetTableSize() const {
return m_table_size;
}
constexpr size_t GetCount() const {
return m_count;
}
constexpr size_t GetMaxCount() const {
return m_max_count;
}
ResultCode Finalize();
bool Remove(Handle handle);
template <typename T = KAutoObject>
KScopedAutoObject<T> GetObjectWithoutPseudoHandle(Handle handle) const {
// Lock and look up in table.
KScopedSpinLock lk(m_lock);
if constexpr (std::is_same<T, KAutoObject>::value) {
return this->GetObjectImpl(handle);
} else {
if (auto* obj = this->GetObjectImpl(handle); obj != nullptr) {
return obj->DynamicCast<T*>();
} else {
return nullptr;
}
}
}
template <typename T = KAutoObject>
KScopedAutoObject<T> GetObject(Handle handle) const {
// Handle pseudo-handles.
if constexpr (std::derived_from<KProcess, T>) {
if (handle == Svc::PseudoHandle::CurrentProcess) {
auto* const cur_process = kernel.CurrentProcess();
ASSERT(cur_process != nullptr);
return cur_process;
}
} else if constexpr (std::derived_from<KThread, T>) {
if (handle == Svc::PseudoHandle::CurrentThread) {
auto* const cur_thread = GetCurrentThreadPointer(kernel);
ASSERT(cur_thread != nullptr);
return cur_thread;
}
}
return this->template GetObjectWithoutPseudoHandle<T>(handle);
}
ResultCode Reserve(Handle* out_handle);
void Unreserve(Handle handle);
template <typename T>
ResultCode Add(Handle* out_handle, T* obj) {
static_assert(std::is_base_of<KAutoObject, T>::value);
return this->Add(out_handle, obj, obj->GetTypeObj().GetClassToken());
}
template <typename T>
void Register(Handle handle, T* obj) {
static_assert(std::is_base_of<KAutoObject, T>::value);
return this->Register(handle, obj, obj->GetTypeObj().GetClassToken());
}
template <typename T>
bool GetMultipleObjects(T** out, const Handle* handles, size_t num_handles) const {
// Try to convert and open all the handles.
size_t num_opened;
{
// Lock the table.
KScopedSpinLock lk(m_lock);
for (num_opened = 0; num_opened < num_handles; num_opened++) {
// Get the current handle.
const auto cur_handle = handles[num_opened];
// Get the object for the current handle.
KAutoObject* cur_object = this->GetObjectImpl(cur_handle);
if (cur_object == nullptr) {
break;
}
// Cast the current object to the desired type.
T* cur_t = cur_object->DynamicCast<T*>();
if (cur_t == nullptr) {
break;
}
// Open a reference to the current object.
cur_t->Open();
out[num_opened] = cur_t;
}
}
// If we converted every object, succeed.
if (num_opened == num_handles) {
return true;
}
// If we didn't convert entry object, close the ones we opened.
for (size_t i = 0; i < num_opened; i++) {
out[i]->Close();
}
return false;
}
private:
ResultCode Add(Handle* out_handle, KAutoObject* obj, u16 type);
void Register(Handle handle, KAutoObject* obj, u16 type);
constexpr s32 AllocateEntry() {
ASSERT(m_count < m_table_size);
const auto index = m_free_head_index;
m_free_head_index = m_entry_infos[index].GetNextFreeIndex();
m_max_count = std::max(m_max_count, ++m_count);
return index;
}
constexpr void FreeEntry(s32 index) {
ASSERT(m_count > 0);
m_objects[index] = nullptr;
m_entry_infos[index].next_free_index = m_free_head_index;
m_free_head_index = index;
--m_count;
}
constexpr u16 AllocateLinearId() {
const u16 id = m_next_linear_id++;
if (m_next_linear_id > MaxLinearId) {
m_next_linear_id = MinLinearId;
}
return id;
}
constexpr bool IsValidHandle(Handle handle) const {
// Unpack the handle.
const auto handle_pack = HandlePack(handle);
const auto raw_value = handle_pack.raw;
const auto index = handle_pack.index;
const auto linear_id = handle_pack.linear_id;
const auto reserved = handle_pack.reserved;
ASSERT(reserved == 0);
// Validate our indexing information.
if (raw_value == 0) {
return false;
}
if (linear_id == 0) {
return false;
}
if (index >= m_table_size) {
return false;
}
// Check that there's an object, and our serial id is correct.
if (m_objects[index] == nullptr) {
return false;
}
if (m_entry_infos[index].GetLinearId() != linear_id) {
return false;
}
return true;
}
constexpr KAutoObject* GetObjectImpl(Handle handle) const {
// Handles must not have reserved bits set.
const auto handle_pack = HandlePack(handle);
if (handle_pack.reserved != 0) {
return nullptr;
}
if (this->IsValidHandle(handle)) {
return m_objects[handle_pack.index];
} else {
return nullptr;
}
}
constexpr KAutoObject* GetObjectByIndexImpl(Handle* out_handle, size_t index) const {
// Index must be in bounds.
if (index >= m_table_size) {
return nullptr;
}
// Ensure entry has an object.
if (KAutoObject* obj = m_objects[index]; obj != nullptr) {
*out_handle = EncodeHandle(static_cast<u16>(index), m_entry_infos[index].GetLinearId());
return obj;
} else {
return nullptr;
}
}
private:
KernelCore& kernel;
};
} // namespace Kernel

2
src/core/hle/kernel/k_process.cpp
View File

@ -354,7 +354,7 @@ ResultCode KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
tls_region_address = CreateTLSRegion();
memory_reservation.Commit();
return handle_table.SetSize(capabilities.GetHandleTableSize());
return handle_table.Initialize(capabilities.GetHandleTableSize());
}
void KProcess::Run(s32 main_thread_priority, u64 stack_size) {

8
src/core/hle/kernel/k_process.h
View File

@ -11,10 +11,10 @@
#include <unordered_map>
#include <vector>
#include "common/common_types.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_address_arbiter.h"
#include "core/hle/kernel/k_auto_object.h"
#include "core/hle/kernel/k_condition_variable.h"
#include "core/hle/kernel/k_handle_table.h"
#include "core/hle/kernel/k_synchronization_object.h"
#include "core/hle/kernel/process_capability.h"
#include "core/hle/kernel/slab_helpers.h"
@ -104,12 +104,12 @@ public:
}
/// Gets a reference to the process' handle table.
HandleTable& GetHandleTable() {
KHandleTable& GetHandleTable() {
return handle_table;
}
/// Gets a const reference to the process' handle table.
const HandleTable& GetHandleTable() const {
const KHandleTable& GetHandleTable() const {
return handle_table;
}
@ -429,7 +429,7 @@ private:
u64 total_process_running_time_ticks = 0;
/// Per-process handle table for storing created object handles in.
HandleTable handle_table;
KHandleTable handle_table;
/// Per-process address arbiter.
KAddressArbiter address_arbiter;

4
src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h
View File

@ -8,7 +8,7 @@
#pragma once
#include "common/common_types.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_handle_table.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/time_manager.h"
@ -17,7 +17,7 @@ namespace Kernel {
class [[nodiscard]] KScopedSchedulerLockAndSleep {
public:
explicit KScopedSchedulerLockAndSleep(KernelCore & kernel, KThread * t, s64 timeout)
explicit KScopedSchedulerLockAndSleep(KernelCore& kernel, KThread* t, s64 timeout)
: kernel(kernel), thread(t), timeout_tick(timeout) {
// Lock the scheduler.
kernel.GlobalSchedulerContext().scheduler_lock.Lock();

2
src/core/hle/kernel/k_server_session.cpp
View File

@ -10,9 +10,9 @@
#include "common/logging/log.h"
#include "core/core_timing.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/hle_ipc.h"
#include "core/hle/kernel/k_client_port.h"
#include "core/hle/kernel/k_handle_table.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_server_session.h"

2
src/core/hle/kernel/k_thread.cpp
View File

@ -18,8 +18,8 @@
#include "core/core.h"
#include "core/cpu_manager.h"
#include "core/hardware_properties.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_condition_variable.h"
#include "core/hle/kernel/k_handle_table.h"
#include "core/hle/kernel/k_memory_layout.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/k_resource_limit.h"

20
src/core/hle/kernel/kernel.cpp
View File

@ -26,9 +26,9 @@
#include "core/cpu_manager.h"
#include "core/device_memory.h"
#include "core/hardware_properties.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/init/init_slab_setup.h"
#include "core/hle/kernel/k_client_port.h"
#include "core/hle/kernel/k_handle_table.h"
#include "core/hle/kernel/k_memory_layout.h"
#include "core/hle/kernel/k_memory_manager.h"
#include "core/hle/kernel/k_process.h"
@ -52,8 +52,7 @@ namespace Kernel {
struct KernelCore::Impl {
explicit Impl(Core::System& system, KernelCore& kernel)
: time_manager{system}, global_handle_table{kernel},
object_list_container{kernel}, system{system} {}
: time_manager{system}, object_list_container{kernel}, system{system} {}
void SetMulticore(bool is_multicore) {
this->is_multicore = is_multicore;
@ -61,6 +60,7 @@ struct KernelCore::Impl {
void Initialize(KernelCore& kernel) {
global_scheduler_context = std::make_unique<Kernel::GlobalSchedulerContext>(kernel);
global_handle_table = std::make_unique<Kernel::KHandleTable>(kernel);
service_thread_manager =
std::make_unique<Common::ThreadWorker>(1, "yuzu:ServiceThreadManager");
@ -118,7 +118,7 @@ struct KernelCore::Impl {
current_process = nullptr;
}
global_handle_table.Clear();
global_handle_table.reset();
preemption_event = nullptr;
@ -648,7 +648,7 @@ struct KernelCore::Impl {
// This is the kernel's handle table or supervisor handle table which
// stores all the objects in place.
HandleTable global_handle_table;
std::unique_ptr<KHandleTable> global_handle_table;
KAutoObjectWithListContainer object_list_container;
@ -722,7 +722,7 @@ KResourceLimit* KernelCore::GetSystemResourceLimit() {
}
KScopedAutoObject<KThread> KernelCore::RetrieveThreadFromGlobalHandleTable(Handle handle) const {
return impl->global_handle_table.GetObject<KThread>(handle);
return impl->global_handle_table->GetObject<KThread>(handle);
}
void KernelCore::AppendNewProcess(KProcess* process) {
@ -876,12 +876,12 @@ u64 KernelCore::CreateNewUserProcessID() {
return impl->next_user_process_id++;
}
Kernel::HandleTable& KernelCore::GlobalHandleTable() {
return impl->global_handle_table;
KHandleTable& KernelCore::GlobalHandleTable() {
return *impl->global_handle_table;
}
const Kernel::HandleTable& KernelCore::GlobalHandleTable() const {
return impl->global_handle_table;
const KHandleTable& KernelCore::GlobalHandleTable() const {
return *impl->global_handle_table;
}
void KernelCore::RegisterCoreThread(std::size_t core_id) {

7
src/core/hle/kernel/kernel.h
View File

@ -14,6 +14,7 @@
#include "core/hle/kernel/k_auto_object.h"
#include "core/hle/kernel/k_slab_heap.h"
#include "core/hle/kernel/memory_types.h"
#include "core/hle/kernel/svc_common.h"
namespace Core {
class CPUInterruptHandler;
@ -30,10 +31,10 @@ namespace Kernel {
class KClientPort;
class GlobalSchedulerContext;
class HandleTable;
class KAutoObjectWithListContainer;
class KClientSession;
class KEvent;
class KHandleTable;
class KLinkedListNode;
class KMemoryManager;
class KPort;
@ -308,10 +309,10 @@ private:
u64 CreateNewThreadID();
/// Provides a reference to the global handle table.
Kernel::HandleTable& GlobalHandleTable();
KHandleTable& GlobalHandleTable();
/// Provides a const reference to the global handle table.
const Kernel::HandleTable& GlobalHandleTable() const;
const KHandleTable& GlobalHandleTable() const;
struct Impl;
std::unique_ptr<Impl> impl;

4
src/core/hle/kernel/process_capability.cpp
View File

@ -6,7 +6,7 @@
#include "common/bit_util.h"
#include "common/logging/log.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_handle_table.h"
#include "core/hle/kernel/k_page_table.h"
#include "core/hle/kernel/process_capability.h"
#include "core/hle/kernel/svc_results.h"
@ -99,7 +99,7 @@ void ProcessCapabilities::InitializeForMetadatalessProcess() {
interrupt_capabilities.set();
// Allow using the maximum possible amount of handles
handle_table_size = static_cast<s32>(HandleTable::MAX_COUNT);
handle_table_size = static_cast<s32>(KHandleTable::MaxTableSize);
// Allow all debugging capabilities.
is_debuggable = true;

8
src/core/hle/kernel/svc.cpp
View File

@ -21,12 +21,12 @@
#include "core/core_timing.h"
#include "core/core_timing_util.h"
#include "core/cpu_manager.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_address_arbiter.h"
#include "core/hle/kernel/k_client_port.h"
#include "core/hle/kernel/k_client_session.h"
#include "core/hle/kernel/k_condition_variable.h"
#include "core/hle/kernel/k_event.h"
#include "core/hle/kernel/k_handle_table.h"
#include "core/hle/kernel/k_memory_block.h"
#include "core/hle/kernel/k_memory_layout.h"
#include "core/hle/kernel/k_page_table.h"
@ -839,10 +839,10 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, Handle
}
KProcess* const current_process = system.Kernel().CurrentProcess();
HandleTable& handle_table = current_process->GetHandleTable();
KHandleTable& handle_table = current_process->GetHandleTable();
const auto resource_limit = current_process->GetResourceLimit();
if (!resource_limit) {
*result = KernelHandle::InvalidHandle;
*result = Svc::InvalidHandle;
// Yes, the kernel considers this a successful operation.
return RESULT_SUCCESS;
}
@ -1993,7 +1993,7 @@ static ResultCode SignalEvent(Core::System& system, Handle event_handle) {
LOG_DEBUG(Kernel_SVC, "called, event_handle=0x{:08X}", event_handle);
// Get the current handle table.
const HandleTable& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
const KHandleTable& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
// Get the writable event.
KScopedAutoObject writable_event = handle_table.GetObject<KWritableEvent>(event_handle);

15
src/core/hle/kernel/svc_common.h
View File

@ -6,9 +6,24 @@
#include "common/common_types.h"
namespace Kernel {
using Handle = u32;
}
namespace Kernel::Svc {
constexpr s32 ArgumentHandleCountMax = 0x40;
constexpr u32 HandleWaitMask{1u << 30};
constexpr inline Handle InvalidHandle = Handle(0);
enum PseudoHandle : Handle {
CurrentThread = 0xFFFF8000,
CurrentProcess = 0xFFFF8001,
};
constexpr bool IsPseudoHandle(const Handle& handle) {
return handle == PseudoHandle::CurrentProcess || handle == PseudoHandle::CurrentThread;
}
} // namespace Kernel::Svc

1
src/core/hle/kernel/time_manager.cpp
View File

@ -6,7 +6,6 @@
#include "core/core.h"
#include "core/core_timing.h"
#include "core/core_timing_util.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/kernel.h"

4
src/yuzu/debugger/wait_tree.cpp
View File

@ -12,8 +12,8 @@
#include "common/assert.h"
#include "core/arm/arm_interface.h"
#include "core/core.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_class_token.h"
#include "core/hle/kernel/k_handle_table.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/k_readable_event.h"
#include "core/hle/kernel/k_scheduler.h"
@ -115,7 +115,7 @@ QString WaitTreeText::GetText() const {
return text;
}
WaitTreeMutexInfo::WaitTreeMutexInfo(VAddr mutex_address, const Kernel::HandleTable& handle_table)
WaitTreeMutexInfo::WaitTreeMutexInfo(VAddr mutex_address, const Kernel::KHandleTable& handle_table)
: mutex_address(mutex_address) {
mutex_value = Core::System::GetInstance().Memory().Read32(mutex_address);
owner_handle = static_cast<Kernel::Handle>(mutex_value & Kernel::Svc::HandleWaitMask);

5
src/yuzu/debugger/wait_tree.h
View File

@ -14,11 +14,12 @@
#include "common/common_types.h"
#include "core/hle/kernel/k_auto_object.h"
#include "core/hle/kernel/svc_common.h"
class EmuThread;
namespace Kernel {
class HandleTable;
class KHandleTable;
class KReadableEvent;
class KSynchronizationObject;
class KThread;
@ -74,7 +75,7 @@ public:
class WaitTreeMutexInfo : public WaitTreeExpandableItem {
Q_OBJECT
public:
explicit WaitTreeMutexInfo(VAddr mutex_address, const Kernel::HandleTable& handle_table);
explicit WaitTreeMutexInfo(VAddr mutex_address, const Kernel::KHandleTable& handle_table);
~WaitTreeMutexInfo() override;
QString GetText() const override;