Kernel: Convert Mutex to not use Handles
This commit is contained in:
parent
38e7122f23
commit
882b6fed75
|
@ -13,59 +13,30 @@
|
||||||
|
|
||||||
namespace Kernel {
|
namespace Kernel {
|
||||||
|
|
||||||
class Mutex : public WaitObject {
|
|
||||||
public:
|
|
||||||
std::string GetTypeName() const override { return "Mutex"; }
|
|
||||||
std::string GetName() const override { return name; }
|
|
||||||
|
|
||||||
static const HandleType HANDLE_TYPE = HandleType::Mutex;
|
|
||||||
HandleType GetHandleType() const override { return HANDLE_TYPE; }
|
|
||||||
|
|
||||||
bool initial_locked; ///< Initial lock state when mutex was created
|
|
||||||
bool locked; ///< Current locked state
|
|
||||||
std::string name; ///< Name of mutex (optional)
|
|
||||||
SharedPtr<Thread> holding_thread; ///< Thread that has acquired the mutex
|
|
||||||
|
|
||||||
bool ShouldWait() override;
|
|
||||||
void Acquire() override;
|
|
||||||
};
|
|
||||||
|
|
||||||
////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
||||||
|
|
||||||
typedef std::multimap<SharedPtr<Thread>, SharedPtr<Mutex>> MutexMap;
|
typedef std::multimap<SharedPtr<Thread>, SharedPtr<Mutex>> MutexMap;
|
||||||
static MutexMap g_mutex_held_locks;
|
static MutexMap g_mutex_held_locks;
|
||||||
|
|
||||||
/**
|
|
||||||
* Acquires the specified mutex for the specified thread
|
|
||||||
* @param mutex Mutex that is to be acquired
|
|
||||||
* @param thread Thread that will acquire the mutex
|
|
||||||
*/
|
|
||||||
static void MutexAcquireLock(Mutex* mutex, Thread* thread) {
|
|
||||||
g_mutex_held_locks.insert(std::make_pair(thread, mutex));
|
|
||||||
mutex->holding_thread = thread;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Resumes a thread waiting for the specified mutex
|
* Resumes a thread waiting for the specified mutex
|
||||||
* @param mutex The mutex that some thread is waiting on
|
* @param mutex The mutex that some thread is waiting on
|
||||||
*/
|
*/
|
||||||
static void ResumeWaitingThread(Mutex* mutex) {
|
static void ResumeWaitingThread(Mutex* mutex) {
|
||||||
// Find the next waiting thread for the mutex...
|
|
||||||
auto next_thread = mutex->WakeupNextThread();
|
|
||||||
if (next_thread != nullptr) {
|
|
||||||
MutexAcquireLock(mutex, next_thread);
|
|
||||||
} else {
|
|
||||||
// Reset mutex lock thread handle, nothing is waiting
|
// Reset mutex lock thread handle, nothing is waiting
|
||||||
mutex->locked = false;
|
mutex->locked = false;
|
||||||
mutex->holding_thread = nullptr;
|
mutex->holding_thread = nullptr;
|
||||||
|
|
||||||
|
// Find the next waiting thread for the mutex...
|
||||||
|
auto next_thread = mutex->WakeupNextThread();
|
||||||
|
if (next_thread != nullptr) {
|
||||||
|
mutex->Acquire(next_thread);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
void ReleaseThreadMutexes(Thread* thread) {
|
void ReleaseThreadMutexes(Thread* thread) {
|
||||||
auto locked = g_mutex_held_locks.equal_range(thread);
|
auto locked_range = g_mutex_held_locks.equal_range(thread);
|
||||||
|
|
||||||
// Release every mutex that the thread holds, and resume execution on the waiting threads
|
// Release every mutex that the thread holds, and resume execution on the waiting threads
|
||||||
for (auto iter = locked.first; iter != locked.second; ++iter) {
|
for (auto iter = locked_range.first; iter != locked_range.second; ++iter) {
|
||||||
ResumeWaitingThread(iter->second.get());
|
ResumeWaitingThread(iter->second.get());
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -73,62 +44,21 @@ void ReleaseThreadMutexes(Thread* thread) {
|
||||||
g_mutex_held_locks.erase(thread);
|
g_mutex_held_locks.erase(thread);
|
||||||
}
|
}
|
||||||
|
|
||||||
static bool ReleaseMutex(Mutex* mutex) {
|
ResultVal<SharedPtr<Mutex>> Mutex::Create(bool initial_locked, std::string name) {
|
||||||
if (mutex->locked) {
|
SharedPtr<Mutex> mutex(new Mutex);
|
||||||
auto locked = g_mutex_held_locks.equal_range(mutex->holding_thread);
|
// TOOD(yuriks): Don't create Handle (see Thread::Create())
|
||||||
|
CASCADE_RESULT(auto unused, Kernel::g_handle_table.Create(mutex));
|
||||||
|
|
||||||
for (MutexMap::iterator iter = locked.first; iter != locked.second; ++iter) {
|
mutex->initial_locked = initial_locked;
|
||||||
if (iter->second == mutex) {
|
mutex->locked = false;
|
||||||
g_mutex_held_locks.erase(iter);
|
mutex->name = std::move(name);
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
ResumeWaitingThread(mutex);
|
|
||||||
}
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
||||||
ResultCode ReleaseMutex(Handle handle) {
|
|
||||||
Mutex* mutex = Kernel::g_handle_table.Get<Mutex>(handle).get();
|
|
||||||
if (mutex == nullptr) return InvalidHandle(ErrorModule::Kernel);
|
|
||||||
|
|
||||||
if (!ReleaseMutex(mutex)) {
|
|
||||||
// TODO(yuriks): Verify error code, this one was pulled out of thin air. I'm not even sure
|
|
||||||
// what error condition this is supposed to be signaling.
|
|
||||||
return ResultCode(ErrorDescription::AlreadyDone, ErrorModule::Kernel,
|
|
||||||
ErrorSummary::NothingHappened, ErrorLevel::Temporary);
|
|
||||||
}
|
|
||||||
return RESULT_SUCCESS;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Creates a mutex
|
|
||||||
* @param handle Reference to handle for the newly created mutex
|
|
||||||
* @param initial_locked Specifies if the mutex should be locked initially
|
|
||||||
* @param name Optional name of mutex
|
|
||||||
* @return Pointer to new Mutex object
|
|
||||||
*/
|
|
||||||
static Mutex* CreateMutex(Handle& handle, bool initial_locked, const std::string& name) {
|
|
||||||
Mutex* mutex = new Mutex;
|
|
||||||
// TODO(yuriks): Fix error reporting
|
|
||||||
handle = Kernel::g_handle_table.Create(mutex).ValueOr(INVALID_HANDLE);
|
|
||||||
|
|
||||||
mutex->locked = mutex->initial_locked = initial_locked;
|
|
||||||
mutex->name = name;
|
|
||||||
mutex->holding_thread = nullptr;
|
mutex->holding_thread = nullptr;
|
||||||
|
|
||||||
// Acquire mutex with current thread if initialized as locked...
|
// Acquire mutex with current thread if initialized as locked...
|
||||||
if (mutex->locked)
|
if (initial_locked)
|
||||||
MutexAcquireLock(mutex, GetCurrentThread());
|
mutex->Acquire();
|
||||||
|
|
||||||
return mutex;
|
return MakeResult<SharedPtr<Mutex>>(mutex);
|
||||||
}
|
|
||||||
|
|
||||||
Handle CreateMutex(bool initial_locked, const std::string& name) {
|
|
||||||
Handle handle;
|
|
||||||
Mutex* mutex = CreateMutex(handle, initial_locked, name);
|
|
||||||
return handle;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
bool Mutex::ShouldWait() {
|
bool Mutex::ShouldWait() {
|
||||||
|
@ -136,9 +66,34 @@ bool Mutex::ShouldWait() {
|
||||||
}
|
}
|
||||||
|
|
||||||
void Mutex::Acquire() {
|
void Mutex::Acquire() {
|
||||||
|
Acquire(GetCurrentThread());
|
||||||
|
}
|
||||||
|
|
||||||
|
void Mutex::Acquire(Thread* thread) {
|
||||||
_assert_msg_(Kernel, !ShouldWait(), "object unavailable!");
|
_assert_msg_(Kernel, !ShouldWait(), "object unavailable!");
|
||||||
|
if (locked)
|
||||||
|
return;
|
||||||
|
|
||||||
locked = true;
|
locked = true;
|
||||||
MutexAcquireLock(this, GetCurrentThread());
|
|
||||||
|
g_mutex_held_locks.insert(std::make_pair(thread, this));
|
||||||
|
holding_thread = thread;
|
||||||
|
}
|
||||||
|
|
||||||
|
void Mutex::Release() {
|
||||||
|
if (!locked)
|
||||||
|
return;
|
||||||
|
|
||||||
|
auto locked_range = g_mutex_held_locks.equal_range(holding_thread);
|
||||||
|
|
||||||
|
for (MutexMap::iterator iter = locked_range.first; iter != locked_range.second; ++iter) {
|
||||||
|
if (iter->second == this) {
|
||||||
|
g_mutex_held_locks.erase(iter);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
ResumeWaitingThread(this);
|
||||||
}
|
}
|
||||||
|
|
||||||
} // namespace
|
} // namespace
|
||||||
|
|
|
@ -4,25 +4,51 @@
|
||||||
|
|
||||||
#pragma once
|
#pragma once
|
||||||
|
|
||||||
|
#include <string>
|
||||||
|
|
||||||
#include "common/common_types.h"
|
#include "common/common_types.h"
|
||||||
|
|
||||||
#include "core/hle/kernel/kernel.h"
|
#include "core/hle/kernel/kernel.h"
|
||||||
|
|
||||||
namespace Kernel {
|
namespace Kernel {
|
||||||
|
|
||||||
/**
|
class Thread;
|
||||||
* Releases a mutex
|
|
||||||
* @param handle Handle to mutex to release
|
|
||||||
*/
|
|
||||||
ResultCode ReleaseMutex(Handle handle);
|
|
||||||
|
|
||||||
|
class Mutex : public WaitObject {
|
||||||
|
public:
|
||||||
/**
|
/**
|
||||||
* Creates a mutex
|
* Creates a mutex.
|
||||||
* @param initial_locked Specifies if the mutex should be locked initially
|
* @param initial_locked Specifies if the mutex should be locked initially
|
||||||
* @param name Optional name of mutex
|
* @param name Optional name of mutex
|
||||||
* @return Handle to newly created object
|
* @return Pointer to new Mutex object
|
||||||
*/
|
*/
|
||||||
Handle CreateMutex(bool initial_locked, const std::string& name="Unknown");
|
static ResultVal<SharedPtr<Mutex>> Create(bool initial_locked, std::string name = "Unknown");
|
||||||
|
|
||||||
|
std::string GetTypeName() const override { return "Mutex"; }
|
||||||
|
std::string GetName() const override { return name; }
|
||||||
|
|
||||||
|
static const HandleType HANDLE_TYPE = HandleType::Mutex;
|
||||||
|
HandleType GetHandleType() const override { return HANDLE_TYPE; }
|
||||||
|
|
||||||
|
bool initial_locked; ///< Initial lock state when mutex was created
|
||||||
|
bool locked; ///< Current locked state
|
||||||
|
std::string name; ///< Name of mutex (optional)
|
||||||
|
SharedPtr<Thread> holding_thread; ///< Thread that has acquired the mutex
|
||||||
|
|
||||||
|
bool ShouldWait() override;
|
||||||
|
void Acquire() override;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Acquires the specified mutex for the specified thread
|
||||||
|
* @param mutex Mutex that is to be acquired
|
||||||
|
* @param thread Thread that will acquire the mutex
|
||||||
|
*/
|
||||||
|
void Acquire(Thread* thread);
|
||||||
|
void Release();
|
||||||
|
|
||||||
|
private:
|
||||||
|
Mutex() = default;
|
||||||
|
};
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Releases all the mutexes held by the specified thread
|
* Releases all the mutexes held by the specified thread
|
||||||
|
|
|
@ -10,6 +10,7 @@
|
||||||
#include "core/hle/kernel/event.h"
|
#include "core/hle/kernel/event.h"
|
||||||
#include "core/hle/kernel/mutex.h"
|
#include "core/hle/kernel/mutex.h"
|
||||||
#include "core/hle/kernel/shared_memory.h"
|
#include "core/hle/kernel/shared_memory.h"
|
||||||
|
#include "core/hle/kernel/thread.h"
|
||||||
#include "core/hle/service/apt_s.h"
|
#include "core/hle/service/apt_s.h"
|
||||||
|
|
||||||
////////////////////////////////////////////////////////////////////////////////////////////////////
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
||||||
|
|
|
@ -10,6 +10,7 @@
|
||||||
#include "core/hle/kernel/event.h"
|
#include "core/hle/kernel/event.h"
|
||||||
#include "core/hle/kernel/mutex.h"
|
#include "core/hle/kernel/mutex.h"
|
||||||
#include "core/hle/kernel/shared_memory.h"
|
#include "core/hle/kernel/shared_memory.h"
|
||||||
|
#include "core/hle/kernel/thread.h"
|
||||||
#include "core/hle/service/apt_u.h"
|
#include "core/hle/service/apt_u.h"
|
||||||
|
|
||||||
////////////////////////////////////////////////////////////////////////////////////////////////////
|
////////////////////////////////////////////////////////////////////////////////////////////////////
|
||||||
|
@ -28,7 +29,7 @@ static const VAddr SHARED_FONT_VADDR = 0x18000000;
|
||||||
/// Handle to shared memory region designated to for shared system font
|
/// Handle to shared memory region designated to for shared system font
|
||||||
static Kernel::SharedPtr<Kernel::SharedMemory> shared_font_mem;
|
static Kernel::SharedPtr<Kernel::SharedMemory> shared_font_mem;
|
||||||
|
|
||||||
static Handle lock_handle = 0;
|
static Kernel::SharedPtr<Kernel::Mutex> lock;
|
||||||
static Handle notification_event_handle = 0; ///< APT notification event handle
|
static Handle notification_event_handle = 0; ///< APT notification event handle
|
||||||
static Handle pause_event_handle = 0; ///< APT pause event handle
|
static Handle pause_event_handle = 0; ///< APT pause event handle
|
||||||
static std::vector<u8> shared_font;
|
static std::vector<u8> shared_font;
|
||||||
|
@ -76,8 +77,8 @@ void Initialize(Service::Interface* self) {
|
||||||
Kernel::ClearEvent(notification_event_handle);
|
Kernel::ClearEvent(notification_event_handle);
|
||||||
Kernel::SignalEvent(pause_event_handle); // Fire start event
|
Kernel::SignalEvent(pause_event_handle); // Fire start event
|
||||||
|
|
||||||
_assert_msg_(KERNEL, (0 != lock_handle), "Cannot initialize without lock");
|
_assert_msg_(KERNEL, (nullptr != lock), "Cannot initialize without lock");
|
||||||
Kernel::ReleaseMutex(lock_handle);
|
lock->Release();
|
||||||
|
|
||||||
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
|
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
|
||||||
}
|
}
|
||||||
|
@ -103,10 +104,9 @@ void GetLockHandle(Service::Interface* self) {
|
||||||
u32* cmd_buff = Kernel::GetCommandBuffer();
|
u32* cmd_buff = Kernel::GetCommandBuffer();
|
||||||
u32 flags = cmd_buff[1]; // TODO(bunnei): Figure out the purpose of the flag field
|
u32 flags = cmd_buff[1]; // TODO(bunnei): Figure out the purpose of the flag field
|
||||||
|
|
||||||
if (0 == lock_handle) {
|
if (nullptr == lock) {
|
||||||
// TODO(bunnei): Verify if this is created here or at application boot?
|
// TODO(bunnei): Verify if this is created here or at application boot?
|
||||||
lock_handle = Kernel::CreateMutex(false, "APT_U:Lock");
|
lock = Kernel::Mutex::Create(false, "APT_U:Lock").MoveFrom();
|
||||||
Kernel::ReleaseMutex(lock_handle);
|
|
||||||
}
|
}
|
||||||
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
|
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
|
||||||
|
|
||||||
|
@ -116,7 +116,7 @@ void GetLockHandle(Service::Interface* self) {
|
||||||
cmd_buff[3] = 0;
|
cmd_buff[3] = 0;
|
||||||
cmd_buff[4] = 0;
|
cmd_buff[4] = 0;
|
||||||
|
|
||||||
cmd_buff[5] = lock_handle;
|
cmd_buff[5] = Kernel::g_handle_table.Create(lock).MoveFrom();
|
||||||
LOG_TRACE(Service_APT, "called handle=0x%08X", cmd_buff[5]);
|
LOG_TRACE(Service_APT, "called handle=0x%08X", cmd_buff[5]);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -520,7 +520,7 @@ Interface::Interface() {
|
||||||
shared_font_mem = nullptr;
|
shared_font_mem = nullptr;
|
||||||
}
|
}
|
||||||
|
|
||||||
lock_handle = 0;
|
lock = nullptr;
|
||||||
|
|
||||||
Register(FunctionTable, ARRAY_SIZE(FunctionTable));
|
Register(FunctionTable, ARRAY_SIZE(FunctionTable));
|
||||||
}
|
}
|
||||||
|
|
|
@ -364,18 +364,32 @@ static Result SetThreadPriority(Handle handle, s32 priority) {
|
||||||
}
|
}
|
||||||
|
|
||||||
/// Create a mutex
|
/// Create a mutex
|
||||||
static Result CreateMutex(Handle* mutex, u32 initial_locked) {
|
static Result CreateMutex(Handle* handle, u32 initial_locked) {
|
||||||
*mutex = Kernel::CreateMutex((initial_locked != 0));
|
using Kernel::Mutex;
|
||||||
|
|
||||||
|
auto mutex_res = Mutex::Create(initial_locked != 0);
|
||||||
|
if (mutex_res.Failed())
|
||||||
|
return mutex_res.Code().raw;
|
||||||
|
SharedPtr<Mutex> mutex = mutex_res.MoveFrom();
|
||||||
|
|
||||||
|
*handle = Kernel::g_handle_table.Create(mutex).MoveFrom();
|
||||||
LOG_TRACE(Kernel_SVC, "called initial_locked=%s : created handle=0x%08X",
|
LOG_TRACE(Kernel_SVC, "called initial_locked=%s : created handle=0x%08X",
|
||||||
initial_locked ? "true" : "false", *mutex);
|
initial_locked ? "true" : "false", *handle);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
/// Release a mutex
|
/// Release a mutex
|
||||||
static Result ReleaseMutex(Handle handle) {
|
static Result ReleaseMutex(Handle handle) {
|
||||||
|
using Kernel::Mutex;
|
||||||
|
|
||||||
LOG_TRACE(Kernel_SVC, "called handle=0x%08X", handle);
|
LOG_TRACE(Kernel_SVC, "called handle=0x%08X", handle);
|
||||||
ResultCode res = Kernel::ReleaseMutex(handle);
|
|
||||||
return res.raw;
|
SharedPtr<Mutex> mutex = Kernel::g_handle_table.Get<Mutex>(handle);
|
||||||
|
if (mutex == nullptr)
|
||||||
|
return InvalidHandle(ErrorModule::Kernel).raw;
|
||||||
|
|
||||||
|
mutex->Release();
|
||||||
|
return RESULT_SUCCESS.raw;
|
||||||
}
|
}
|
||||||
|
|
||||||
/// Get the ID for the specified thread.
|
/// Get the ID for the specified thread.
|
||||||
|
|
Loading…
Reference in New Issue