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Merge pull request #2739 from yuriks/kernel-reorg

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Split-up kernel.h
This commit is contained in:
bunnei 2017-05-31 19:46:15 -04:00 committed by GitHub
commit af1ff4d3ce
27 changed files with 430 additions and 344 deletions
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1
src/citra_qt/debugger/wait_tree.cpp
View file

@ -10,6 +10,7 @@
#include "core/hle/kernel/semaphore.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/kernel/timer.h"
#include "core/hle/kernel/wait_object.h"
WaitTreeItem::~WaitTreeItem() {}

4
src/citra_qt/debugger/wait_tree.h
View file

@ -4,12 +4,10 @@
#pragma once
#include <boost/container/flat_set.hpp>
#include <QAbstractItemModel>
#include <QDockWidget>
#include <QTreeView>
#include <boost/container/flat_set.hpp>
#include "core/core.h"
#include "core/hle/kernel/kernel.h"

4
src/core/CMakeLists.txt
View file

@ -45,6 +45,7 @@ set(SRCS
hle/kernel/client_port.cpp
hle/kernel/client_session.cpp
hle/kernel/event.cpp
hle/kernel/handle_table.cpp
hle/kernel/kernel.cpp
hle/kernel/memory.cpp
hle/kernel/mutex.cpp
@ -57,6 +58,7 @@ set(SRCS
hle/kernel/thread.cpp
hle/kernel/timer.cpp
hle/kernel/vm_manager.cpp
hle/kernel/wait_object.cpp
hle/service/ac/ac.cpp
hle/service/ac/ac_i.cpp
hle/service/ac/ac_u.cpp
@ -236,6 +238,7 @@ set(HEADERS
hle/kernel/client_session.h
hle/kernel/errors.h
hle/kernel/event.h
hle/kernel/handle_table.h
hle/kernel/kernel.h
hle/kernel/memory.h
hle/kernel/mutex.h
@ -249,6 +252,7 @@ set(HEADERS
hle/kernel/thread.h
hle/kernel/timer.h
hle/kernel/vm_manager.h
hle/kernel/wait_object.h
hle/result.h
hle/service/ac/ac.h
hle/service/ac/ac_i.h

2
src/core/hle/ipc_helpers.h
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@ -3,7 +3,9 @@
// Refer to the license.txt file included.
#pragma once
#include "core/hle/ipc.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/kernel.h"
namespace IPC {

1
src/core/hle/kernel/address_arbiter.h
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@ -6,6 +6,7 @@
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/result.h"
// Address arbiters are an underlying kernel synchronization object that can be created/used via
// supervisor calls (SVCs). They function as sort of a global lock. Typically, games/other CTR

1
src/core/hle/kernel/client_port.h
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@ -7,6 +7,7 @@
#include <string>
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/result.h"
namespace Kernel {

3
src/core/hle/kernel/client_session.h
View file

@ -6,10 +6,9 @@
#include <memory>
#include <string>
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/result.h"
namespace Kernel {

1
src/core/hle/kernel/event.h
View file

@ -6,6 +6,7 @@
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/wait_object.h"
namespace Kernel {

97
src/core/hle/kernel/handle_table.cpp Normal file
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@ -0,0 +1,97 @@
// 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/hle/kernel/errors.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/thread.h"
namespace Kernel {
HandleTable g_handle_table;
HandleTable::HandleTable() {
next_generation = 1;
Clear();
}
ResultVal<Handle> HandleTable::Create(SharedPtr<Object> obj) {
DEBUG_ASSERT(obj != nullptr);
u16 slot = next_free_slot;
if (slot >= generations.size()) {
LOG_ERROR(Kernel, "Unable to allocate Handle, too many slots in use.");
return ERR_OUT_OF_HANDLES;
}
next_free_slot = generations[slot];
u16 generation = next_generation++;
// Overflow count so it fits in the 15 bits dedicated to the generation in the handle.
// CTR-OS doesn't use generation 0, so skip straight to 1.
if (next_generation >= (1 << 15))
next_generation = 1;
generations[slot] = generation;
objects[slot] = std::move(obj);
Handle handle = generation | (slot << 15);
return MakeResult<Handle>(handle);
}
ResultVal<Handle> HandleTable::Duplicate(Handle handle) {
SharedPtr<Object> object = GetGeneric(handle);
if (object == nullptr) {
LOG_ERROR(Kernel, "Tried to duplicate invalid handle: %08X", handle);
return ERR_INVALID_HANDLE;
}
return Create(std::move(object));
}
ResultCode HandleTable::Close(Handle handle) {
if (!IsValid(handle))
return ERR_INVALID_HANDLE;
u16 slot = GetSlot(handle);
objects[slot] = nullptr;
generations[slot] = next_free_slot;
next_free_slot = slot;
return RESULT_SUCCESS;
}
bool HandleTable::IsValid(Handle handle) const {
size_t slot = GetSlot(handle);
u16 generation = GetGeneration(handle);
return slot < MAX_COUNT && objects[slot] != nullptr && generations[slot] == generation;
}
SharedPtr<Object> HandleTable::GetGeneric(Handle handle) const {
if (handle == CurrentThread) {
return GetCurrentThread();
} else if (handle == CurrentProcess) {
return g_current_process;
}
if (!IsValid(handle)) {
return nullptr;
}
return objects[GetSlot(handle)];
}
void HandleTable::Clear() {
for (u16 i = 0; i < MAX_COUNT; ++i) {
generations[i] = i + 1;
objects[i] = nullptr;
}
next_free_slot = 0;
}
} // namespace

126
src/core/hle/kernel/handle_table.h Normal file
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@ -0,0 +1,126 @@
// 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 "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/result.h"
namespace Kernel {
enum KernelHandle : Handle {
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:
HandleTable();
/**
* Allocates a handle for the given object.
* @return The created Handle or one of the following errors:
* - `ERR_OUT_OF_HANDLES`: the maximum number of handles has been exceeded.
*/
ResultVal<Handle> Create(SharedPtr<Object> obj);
/**
* 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.
*/
ResultCode Close(Handle handle);
/// Checks if a handle is valid and points to an existing object.
bool IsValid(Handle handle) const;
/**
* Looks up a handle.
* @return Pointer to the looked-up object, or `nullptr` if the handle is not valid.
*/
SharedPtr<Object> GetGeneric(Handle handle) const;
/**
* Looks up a handle while verifying its type.
* @return Pointer to the looked-up object, or `nullptr` if the handle is not valid or its
* type differs from the requested one.
*/
template <class T>
SharedPtr<T> Get(Handle handle) const {
return DynamicObjectCast<T>(GetGeneric(handle));
}
/// Closes all handles held in this table.
void Clear();
private:
/**
* This is the maximum limit of handles allowed per process in CTR-OS. It can be further
* reduced by ExHeader values, but this is not emulated here.
*/
static const size_t MAX_COUNT = 4096;
static u16 GetSlot(Handle handle) {
return handle >> 15;
}
static u16 GetGeneration(Handle handle) {
return handle & 0x7FFF;
}
/// Stores the Object referenced by the handle or null if the slot is empty.
std::array<SharedPtr<Object>, 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;
/**
* 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;
/// Head of the free slots linked list.
u16 next_free_slot;
};
extern HandleTable g_handle_table;
} // namespace

164
src/core/hle/kernel/kernel.cpp
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@ -2,11 +2,8 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/hle/config_mem.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/memory.h"
#include "core/hle/kernel/process.h"
@ -18,165 +15,6 @@
namespace Kernel {
unsigned int Object::next_object_id;
HandleTable g_handle_table;
void WaitObject::AddWaitingThread(SharedPtr<Thread> thread) {
auto itr = std::find(waiting_threads.begin(), waiting_threads.end(), thread);
if (itr == waiting_threads.end())
waiting_threads.push_back(std::move(thread));
}
void WaitObject::RemoveWaitingThread(Thread* thread) {
auto itr = std::find(waiting_threads.begin(), waiting_threads.end(), thread);
// If a thread passed multiple handles to the same object,
// the kernel might attempt to remove the thread from the object's
// waiting threads list multiple times.
if (itr != waiting_threads.end())
waiting_threads.erase(itr);
}
SharedPtr<Thread> WaitObject::GetHighestPriorityReadyThread() {
Thread* candidate = nullptr;
s32 candidate_priority = THREADPRIO_LOWEST + 1;
for (const auto& thread : waiting_threads) {
// The list of waiting threads must not contain threads that are not waiting to be awakened.
ASSERT_MSG(thread->status == THREADSTATUS_WAIT_SYNCH_ANY ||
thread->status == THREADSTATUS_WAIT_SYNCH_ALL,
"Inconsistent thread statuses in waiting_threads");
if (thread->current_priority >= candidate_priority)
continue;
if (ShouldWait(thread.get()))
continue;
// A thread is ready to run if it's either in THREADSTATUS_WAIT_SYNCH_ANY or
// in THREADSTATUS_WAIT_SYNCH_ALL and the rest of the objects it is waiting on are ready.
bool ready_to_run = true;
if (thread->status == THREADSTATUS_WAIT_SYNCH_ALL) {
ready_to_run = std::none_of(thread->wait_objects.begin(), thread->wait_objects.end(),
[&thread](const SharedPtr<WaitObject>& object) {
return object->ShouldWait(thread.get());
});
}
if (ready_to_run) {
candidate = thread.get();
candidate_priority = thread->current_priority;
}
}
return candidate;
}
void WaitObject::WakeupAllWaitingThreads() {
while (auto thread = GetHighestPriorityReadyThread()) {
if (!thread->IsSleepingOnWaitAll()) {
Acquire(thread.get());
// Set the output index of the WaitSynchronizationN call to the index of this object.
if (thread->wait_set_output) {
thread->SetWaitSynchronizationOutput(thread->GetWaitObjectIndex(this));
thread->wait_set_output = false;
}
} else {
for (auto& object : thread->wait_objects) {
object->Acquire(thread.get());
}
// Note: This case doesn't update the output index of WaitSynchronizationN.
}
for (auto& object : thread->wait_objects)
object->RemoveWaitingThread(thread.get());
thread->wait_objects.clear();
thread->SetWaitSynchronizationResult(RESULT_SUCCESS);
thread->ResumeFromWait();
}
}
const std::vector<SharedPtr<Thread>>& WaitObject::GetWaitingThreads() const {
return waiting_threads;
}
HandleTable::HandleTable() {
next_generation = 1;
Clear();
}
ResultVal<Handle> HandleTable::Create(SharedPtr<Object> obj) {
DEBUG_ASSERT(obj != nullptr);
u16 slot = next_free_slot;
if (slot >= generations.size()) {
LOG_ERROR(Kernel, "Unable to allocate Handle, too many slots in use.");
return ERR_OUT_OF_HANDLES;
}
next_free_slot = generations[slot];
u16 generation = next_generation++;
// Overflow count so it fits in the 15 bits dedicated to the generation in the handle.
// CTR-OS doesn't use generation 0, so skip straight to 1.
if (next_generation >= (1 << 15))
next_generation = 1;
generations[slot] = generation;
objects[slot] = std::move(obj);
Handle handle = generation | (slot << 15);
return MakeResult<Handle>(handle);
}
ResultVal<Handle> HandleTable::Duplicate(Handle handle) {
SharedPtr<Object> object = GetGeneric(handle);
if (object == nullptr) {
LOG_ERROR(Kernel, "Tried to duplicate invalid handle: %08X", handle);
return ERR_INVALID_HANDLE;
}
return Create(std::move(object));
}
ResultCode HandleTable::Close(Handle handle) {
if (!IsValid(handle))
return ERR_INVALID_HANDLE;
u16 slot = GetSlot(handle);
objects[slot] = nullptr;
generations[slot] = next_free_slot;
next_free_slot = slot;
return RESULT_SUCCESS;
}
bool HandleTable::IsValid(Handle handle) const {
size_t slot = GetSlot(handle);
u16 generation = GetGeneration(handle);
return slot < MAX_COUNT && objects[slot] != nullptr && generations[slot] == generation;
}
SharedPtr<Object> HandleTable::GetGeneric(Handle handle) const {
if (handle == CurrentThread) {
return GetCurrentThread();
} else if (handle == CurrentProcess) {
return g_current_process;
}
if (!IsValid(handle)) {
return nullptr;
}
return objects[GetSlot(handle)];
}
void HandleTable::Clear() {
for (u16 i = 0; i < MAX_COUNT; ++i) {
generations[i] = i + 1;
objects[i] = nullptr;
}
next_free_slot = 0;
}
/// Initialize the kernel
void Init(u32 system_mode) {

181
src/core/hle/kernel/kernel.h
View file

@ -4,26 +4,16 @@
#pragma once
#include <algorithm>
#include <array>
#include <cstddef>
#include <string>
#include <vector>
#include <utility>
#include <boost/smart_ptr/intrusive_ptr.hpp>
#include "common/common_types.h"
#include "core/hle/result.h"
namespace Kernel {
using Handle = u32;
class Thread;
enum KernelHandle : Handle {
CurrentThread = 0xFFFF8000,
CurrentProcess = 0xFFFF8001,
};
enum class HandleType : u32 {
Unknown,
Event,
@ -121,170 +111,17 @@ inline void intrusive_ptr_release(Object* object) {
template <typename T>
using SharedPtr = boost::intrusive_ptr<T>;
/// Class that represents a Kernel object that a thread can be waiting on
class WaitObject : public Object {
public:
/**
* Check if the specified thread should wait until the object is available
* @param thread The thread about which we're deciding.
* @return True if the current thread should wait due to this object being unavailable
*/
virtual bool ShouldWait(Thread* thread) const = 0;
/// Acquire/lock the object for the specified thread if it is available
virtual void Acquire(Thread* thread) = 0;
/**
* Add a thread to wait on this object
* @param thread Pointer to thread to add
*/
virtual void AddWaitingThread(SharedPtr<Thread> thread);
/**
* Removes a thread from waiting on this object (e.g. if it was resumed already)
* @param thread Pointer to thread to remove
*/
virtual void RemoveWaitingThread(Thread* thread);
/**
* Wake up all threads waiting on this object that can be awoken, in priority order,
* and set the synchronization result and output of the thread.
*/
virtual void WakeupAllWaitingThreads();
/// Obtains the highest priority thread that is ready to run from this object's waiting list.
SharedPtr<Thread> GetHighestPriorityReadyThread();
/// Get a const reference to the waiting threads list for debug use
const std::vector<SharedPtr<Thread>>& GetWaitingThreads() const;
private:
/// Threads waiting for this object to become available
std::vector<SharedPtr<Thread>> waiting_threads;
};
/**
* 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.
* Attempts to downcast the given Object pointer to a pointer to T.
* @return Derived pointer to the object, or `nullptr` if `object` isn't of type T.
*/
class HandleTable final : NonCopyable {
public:
HandleTable();
/**
* Allocates a handle for the given object.
* @return The created Handle or one of the following errors:
* - `ERR_OUT_OF_HANDLES`: the maximum number of handles has been exceeded.
*/
ResultVal<Handle> Create(SharedPtr<Object> obj);
/**
* 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.
*/
ResultCode Close(Handle handle);
/// Checks if a handle is valid and points to an existing object.
bool IsValid(Handle handle) const;
/**
* Looks up a handle.
* @return Pointer to the looked-up object, or `nullptr` if the handle is not valid.
*/
SharedPtr<Object> GetGeneric(Handle handle) const;
/**
* Looks up a handle while verifying its type.
* @return Pointer to the looked-up object, or `nullptr` if the handle is not valid or its
* type differs from the handle type `T::HANDLE_TYPE`.
*/
template <class T>
SharedPtr<T> Get(Handle handle) const {
SharedPtr<Object> object = GetGeneric(handle);
if (object != nullptr && object->GetHandleType() == T::HANDLE_TYPE) {
return boost::static_pointer_cast<T>(std::move(object));
}
return nullptr;
template <typename T>
inline SharedPtr<T> DynamicObjectCast(SharedPtr<Object> object) {
if (object != nullptr && object->GetHandleType() == T::HANDLE_TYPE) {
return boost::static_pointer_cast<T>(std::move(object));
}
/**
* Looks up a handle while verifying that it is an object that a thread can wait on
* @return Pointer to the looked-up object, or `nullptr` if the handle is not valid or it is
* not a waitable object.
*/
SharedPtr<WaitObject> GetWaitObject(Handle handle) const {
SharedPtr<Object> object = GetGeneric(handle);
if (object != nullptr && object->IsWaitable()) {
return boost::static_pointer_cast<WaitObject>(std::move(object));
}
return nullptr;
}
/// Closes all handles held in this table.
void Clear();
private:
/**
* This is the maximum limit of handles allowed per process in CTR-OS. It can be further
* reduced by ExHeader values, but this is not emulated here.
*/
static const size_t MAX_COUNT = 4096;
static u16 GetSlot(Handle handle) {
return handle >> 15;
}
static u16 GetGeneration(Handle handle) {
return handle & 0x7FFF;
}
/// Stores the Object referenced by the handle or null if the slot is empty.
std::array<SharedPtr<Object>, 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;
/**
* 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;
/// Head of the free slots linked list.
u16 next_free_slot;
};
extern HandleTable g_handle_table;
return nullptr;
}
/// Initialize the kernel with the specified system mode.
void Init(u32 system_mode);

1
src/core/hle/kernel/memory.cpp
View file

@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <cinttypes>
#include <map>
#include <memory>

1
src/core/hle/kernel/mutex.h
View file

@ -7,6 +7,7 @@
#include <string>
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/wait_object.h"
namespace Kernel {

1
src/core/hle/kernel/resource_limit.cpp
View file

@ -3,6 +3,7 @@
// Refer to the license.txt file included.
#include <cstring>
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/hle/kernel/resource_limit.h"

2
src/core/hle/kernel/semaphore.h
View file

@ -8,6 +8,8 @@
#include <string>
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/wait_object.h"
#include "core/hle/result.h"
namespace Kernel {

1
src/core/hle/kernel/server_port.h
View file

@ -9,6 +9,7 @@
#include <tuple>
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/wait_object.h"
namespace Service {
class SessionRequestHandler;

3
src/core/hle/kernel/server_session.h
View file

@ -10,7 +10,7 @@
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/session.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/kernel/wait_object.h"
#include "core/hle/result.h"
#include "core/hle/service/service.h"
#include "core/memory.h"
@ -20,6 +20,7 @@ namespace Kernel {
class ClientSession;
class ClientPort;
class ServerSession;
class Thread;
/**
* Kernel object representing the server endpoint of an IPC session. Sessions are the basic CTR-OS

1
src/core/hle/kernel/thread.cpp
View file

@ -15,6 +15,7 @@
#include "core/core.h"
#include "core/core_timing.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/memory.h"
#include "core/hle/kernel/mutex.h"

1
src/core/hle/kernel/thread.h
View file

@ -12,6 +12,7 @@
#include "common/common_types.h"
#include "core/arm/arm_interface.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/wait_object.h"
#include "core/hle/result.h"
enum ThreadPriority : s32 {

1
src/core/hle/kernel/timer.cpp
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@ -6,6 +6,7 @@
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/core_timing.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/kernel/timer.h"

1
src/core/hle/kernel/timer.h
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@ -6,6 +6,7 @@
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/wait_object.h"
namespace Kernel {

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src/core/hle/kernel/wait_object.cpp Normal file
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@ -0,0 +1,99 @@
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/hle/config_mem.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/memory.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/resource_limit.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/kernel/timer.h"
#include "core/hle/shared_page.h"
namespace Kernel {
void WaitObject::AddWaitingThread(SharedPtr<Thread> thread) {
auto itr = std::find(waiting_threads.begin(), waiting_threads.end(), thread);
if (itr == waiting_threads.end())
waiting_threads.push_back(std::move(thread));
}
void WaitObject::RemoveWaitingThread(Thread* thread) {
auto itr = std::find(waiting_threads.begin(), waiting_threads.end(), thread);
// If a thread passed multiple handles to the same object,
// the kernel might attempt to remove the thread from the object's
// waiting threads list multiple times.
if (itr != waiting_threads.end())
waiting_threads.erase(itr);
}
SharedPtr<Thread> WaitObject::GetHighestPriorityReadyThread() {
Thread* candidate = nullptr;
s32 candidate_priority = THREADPRIO_LOWEST + 1;
for (const auto& thread : waiting_threads) {
// The list of waiting threads must not contain threads that are not waiting to be awakened.
ASSERT_MSG(thread->status == THREADSTATUS_WAIT_SYNCH_ANY ||
thread->status == THREADSTATUS_WAIT_SYNCH_ALL,
"Inconsistent thread statuses in waiting_threads");
if (thread->current_priority >= candidate_priority)
continue;
if (ShouldWait(thread.get()))
continue;
// A thread is ready to run if it's either in THREADSTATUS_WAIT_SYNCH_ANY or
// in THREADSTATUS_WAIT_SYNCH_ALL and the rest of the objects it is waiting on are ready.
bool ready_to_run = true;
if (thread->status == THREADSTATUS_WAIT_SYNCH_ALL) {
ready_to_run = std::none_of(thread->wait_objects.begin(), thread->wait_objects.end(),
[&thread](const SharedPtr<WaitObject>& object) {
return object->ShouldWait(thread.get());
});
}
if (ready_to_run) {
candidate = thread.get();
candidate_priority = thread->current_priority;
}
}
return candidate;
}
void WaitObject::WakeupAllWaitingThreads() {
while (auto thread = GetHighestPriorityReadyThread()) {
if (!thread->IsSleepingOnWaitAll()) {
Acquire(thread.get());
// Set the output index of the WaitSynchronizationN call to the index of this object.
if (thread->wait_set_output) {
thread->SetWaitSynchronizationOutput(thread->GetWaitObjectIndex(this));
thread->wait_set_output = false;
}
} else {
for (auto& object : thread->wait_objects) {
object->Acquire(thread.get());
}
// Note: This case doesn't update the output index of WaitSynchronizationN.
}
for (auto& object : thread->wait_objects)
object->RemoveWaitingThread(thread.get());
thread->wait_objects.clear();
thread->SetWaitSynchronizationResult(RESULT_SUCCESS);
thread->ResumeFromWait();
}
}
const std::vector<SharedPtr<Thread>>& WaitObject::GetWaitingThreads() const {
return waiting_threads;
}
} // namespace Kernel

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@ -0,0 +1,67 @@
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <vector>
#include <boost/smart_ptr/intrusive_ptr.hpp>
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
namespace Kernel {
class Thread;
/// Class that represents a Kernel object that a thread can be waiting on
class WaitObject : public Object {
public:
/**
* Check if the specified thread should wait until the object is available
* @param thread The thread about which we're deciding.
* @return True if the current thread should wait due to this object being unavailable
*/
virtual bool ShouldWait(Thread* thread) const = 0;
/// Acquire/lock the object for the specified thread if it is available
virtual void Acquire(Thread* thread) = 0;
/**
* Add a thread to wait on this object
* @param thread Pointer to thread to add
*/
virtual void AddWaitingThread(SharedPtr<Thread> thread);
/**
* Removes a thread from waiting on this object (e.g. if it was resumed already)
* @param thread Pointer to thread to remove
*/
virtual void RemoveWaitingThread(Thread* thread);
/**
* Wake up all threads waiting on this object that can be awoken, in priority order,
* and set the synchronization result and output of the thread.
*/
virtual void WakeupAllWaitingThreads();
/// Obtains the highest priority thread that is ready to run from this object's waiting list.
SharedPtr<Thread> GetHighestPriorityReadyThread();
/// Get a const reference to the waiting threads list for debug use
const std::vector<SharedPtr<Thread>>& GetWaitingThreads() const;
private:
/// Threads waiting for this object to become available
std::vector<SharedPtr<Thread>> waiting_threads;
};
// Specialization of DynamicObjectCast for WaitObjects
template <>
inline SharedPtr<WaitObject> DynamicObjectCast<WaitObject>(SharedPtr<Object> object) {
if (object != nullptr && object->IsWaitable()) {
return boost::static_pointer_cast<WaitObject>(std::move(object));
}
return nullptr;
}
} // namespace Kernel

2
src/core/hle/service/apt/apt.h
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@ -4,6 +4,8 @@
#pragma once
#include <vector>
#include "common/common_funcs.h"
#include "common/common_types.h"
#include "common/swap.h"
#include "core/hle/kernel/kernel.h"

1
src/core/hle/service/service.h
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@ -12,7 +12,6 @@
#include "core/hle/ipc.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/client_port.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/result.h"
#include "core/memory.h"

7
src/core/hle/svc.cpp
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@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <cinttypes>
#include <map>
#include "common/logging/log.h"
@ -16,6 +17,7 @@
#include "core/hle/kernel/client_session.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/memory.h"
#include "core/hle/kernel/mutex.h"
#include "core/hle/kernel/process.h"
@ -27,6 +29,7 @@
#include "core/hle/kernel/thread.h"
#include "core/hle/kernel/timer.h"
#include "core/hle/kernel/vm_manager.h"
#include "core/hle/kernel/wait_object.h"
#include "core/hle/result.h"
#include "core/hle/service/service.h"
@ -244,7 +247,7 @@ static ResultCode CloseHandle(Kernel::Handle handle) {
/// Wait for a handle to synchronize, timeout after the specified nanoseconds
static ResultCode WaitSynchronization1(Kernel::Handle handle, s64 nano_seconds) {
auto object = Kernel::g_handle_table.GetWaitObject(handle);
auto object = Kernel::g_handle_table.Get<Kernel::WaitObject>(handle);
Kernel::Thread* thread = Kernel::GetCurrentThread();
if (object == nullptr)
@ -299,7 +302,7 @@ static ResultCode WaitSynchronizationN(s32* out, Kernel::Handle* handles, s32 ha
std::vector<ObjectPtr> objects(handle_count);
for (int i = 0; i < handle_count; ++i) {
auto object = Kernel::g_handle_table.GetWaitObject(handles[i]);
auto object = Kernel::g_handle_table.Get<Kernel::WaitObject>(handles[i]);
if (object == nullptr)
return ERR_INVALID_HANDLE;
objects[i] = object;