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hle: kernel: Update KThreadQueue and migrate KSynchronizationObject.

This commit is contained in:
bunnei 2021-11-09 19:02:11 -08:00
parent 3dc803a430
commit bc1399204b
8 changed files with 251 additions and 75 deletions
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1
src/core/CMakeLists.txt
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@ -237,6 +237,7 @@ add_library(core STATIC
hle/kernel/k_system_control.h
hle/kernel/k_thread.cpp
hle/kernel/k_thread.h
hle/kernel/k_thread_queue.cpp
hle/kernel/k_thread_queue.h
hle/kernel/k_trace.h
hle/kernel/k_transfer_memory.cpp

1
src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h
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@ -8,6 +8,7 @@
#pragma once
#include "common/common_types.h"
#include "core/hle/kernel/global_scheduler_context.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/time_manager.h"

155
src/core/hle/kernel/k_synchronization_object.cpp
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@ -8,11 +8,70 @@
#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
#include "core/hle/kernel/k_synchronization_object.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/k_thread_queue.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/svc_results.h"
namespace Kernel {
namespace {
class ThreadQueueImplForKSynchronizationObjectWait final : public KThreadQueueWithoutEndWait {
private:
using ThreadListNode = KSynchronizationObject::ThreadListNode;
private:
KSynchronizationObject** m_objects;
ThreadListNode* m_nodes;
s32 m_count;
public:
ThreadQueueImplForKSynchronizationObjectWait(KernelCore& kernel_, KSynchronizationObject** o,
ThreadListNode* n, s32 c)
: KThreadQueueWithoutEndWait(kernel_), m_objects(o), m_nodes(n), m_count(c) { // ...
}
virtual void NotifyAvailable(KThread* waiting_thread, KSynchronizationObject* signaled_object,
ResultCode wait_result) override {
// Determine the sync index, and unlink all nodes.
s32 sync_index = -1;
for (auto i = 0; i < m_count; ++i) {
// Check if this is the signaled object.
if (m_objects[i] == signaled_object && sync_index == -1) {
sync_index = i;
}
// Unlink the current node from the current object.
m_objects[i]->UnlinkNode(std::addressof(m_nodes[i]));
}
// Set the waiting thread's sync index.
waiting_thread->SetSyncedIndex(sync_index);
// Set the waiting thread as not cancellable.
waiting_thread->ClearCancellable();
// Invoke the base end wait handler.
KThreadQueue::EndWait(waiting_thread, wait_result);
}
virtual void CancelWait(KThread* waiting_thread, ResultCode wait_result,
bool cancel_timer_task) override {
// Remove all nodes from our list.
for (auto i = 0; i < m_count; ++i) {
m_objects[i]->UnlinkNode(std::addressof(m_nodes[i]));
}
// Set the waiting thread as not cancellable.
waiting_thread->ClearCancellable();
// Invoke the base cancel wait handler.
KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
}
};
} // namespace
void KSynchronizationObject::Finalize() {
this->OnFinalizeSynchronizationObject();
KAutoObject::Finalize();
@ -25,11 +84,19 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel_ctx, s32* out_index,
std::vector<ThreadListNode> thread_nodes(num_objects);
// Prepare for wait.
KThread* thread = kernel_ctx.CurrentScheduler()->GetCurrentThread();
KThread* thread = GetCurrentThreadPointer(kernel_ctx);
ThreadQueueImplForKSynchronizationObjectWait wait_queue(kernel_ctx, objects,
thread_nodes.data(), num_objects);
{
// Setup the scheduling lock and sleep.
KScopedSchedulerLockAndSleep slp{kernel_ctx, thread, timeout};
KScopedSchedulerLockAndSleep slp(kernel_ctx, thread, timeout);
// Check if the thread should terminate.
if (thread->IsTerminationRequested()) {
slp.CancelSleep();
return ResultTerminationRequested;
}
// Check if any of the objects are already signaled.
for (auto i = 0; i < num_objects; ++i) {
@ -48,12 +115,6 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel_ctx, s32* out_index,
return ResultTimedOut;
}
// Check if the thread should terminate.
if (thread->IsTerminationRequested()) {
slp.CancelSleep();
return ResultTerminationRequested;
}
// Check if waiting was canceled.
if (thread->IsWaitCancelled()) {
slp.CancelSleep();
@ -66,73 +127,25 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel_ctx, s32* out_index,
thread_nodes[i].thread = thread;
thread_nodes[i].next = nullptr;
if (objects[i]->thread_list_tail == nullptr) {
objects[i]->thread_list_head = std::addressof(thread_nodes[i]);
} else {
objects[i]->thread_list_tail->next = std::addressof(thread_nodes[i]);
}
objects[i]->thread_list_tail = std::addressof(thread_nodes[i]);
objects[i]->LinkNode(std::addressof(thread_nodes[i]));
}
// For debugging only
thread->SetWaitObjectsForDebugging({objects, static_cast<std::size_t>(num_objects)});
// Mark the thread as waiting.
// Mark the thread as cancellable.
thread->SetCancellable();
thread->SetSyncedObject(nullptr, ResultTimedOut);
thread->SetState(ThreadState::Waiting);
// Clear the thread's synced index.
thread->SetSyncedIndex(-1);
// Wait for an object to be signaled.
thread->BeginWait(std::addressof(wait_queue));
thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Synchronization);
}
// The lock/sleep is done, so we should be able to get our result.
// Thread is no longer cancellable.
thread->ClearCancellable();
// For debugging only
thread->SetWaitObjectsForDebugging({});
// Cancel the timer as needed.
kernel_ctx.TimeManager().UnscheduleTimeEvent(thread);
// Set the output index.
*out_index = thread->GetSyncedIndex();
// Get the wait result.
ResultCode wait_result{ResultSuccess};
s32 sync_index = -1;
{
KScopedSchedulerLock lock(kernel_ctx);
KSynchronizationObject* synced_obj;
wait_result = thread->GetWaitResult(std::addressof(synced_obj));
for (auto i = 0; i < num_objects; ++i) {
// Unlink the object from the list.
ThreadListNode* prev_ptr =
reinterpret_cast<ThreadListNode*>(std::addressof(objects[i]->thread_list_head));
ThreadListNode* prev_val = nullptr;
ThreadListNode *prev, *tail_prev;
do {
prev = prev_ptr;
prev_ptr = prev_ptr->next;
tail_prev = prev_val;
prev_val = prev_ptr;
} while (prev_ptr != std::addressof(thread_nodes[i]));
if (objects[i]->thread_list_tail == std::addressof(thread_nodes[i])) {
objects[i]->thread_list_tail = tail_prev;
}
prev->next = thread_nodes[i].next;
if (objects[i] == synced_obj) {
sync_index = i;
}
}
}
// Set output.
*out_index = sync_index;
return wait_result;
return thread->GetWaitResult();
}
KSynchronizationObject::KSynchronizationObject(KernelCore& kernel_)
@ -141,7 +154,7 @@ KSynchronizationObject::KSynchronizationObject(KernelCore& kernel_)
KSynchronizationObject::~KSynchronizationObject() = default;
void KSynchronizationObject::NotifyAvailable(ResultCode result) {
KScopedSchedulerLock lock(kernel);
KScopedSchedulerLock sl(kernel);
// If we're not signaled, we've nothing to notify.
if (!this->IsSignaled()) {
@ -150,11 +163,7 @@ void KSynchronizationObject::NotifyAvailable(ResultCode result) {
// Iterate over each thread.
for (auto* cur_node = thread_list_head; cur_node != nullptr; cur_node = cur_node->next) {
KThread* thread = cur_node->thread;
if (thread->GetState() == ThreadState::Waiting) {
thread->SetSyncedObject(this, result);
thread->SetState(ThreadState::Runnable);
}
cur_node->thread->NotifyAvailable(this, result);
}
}

32
src/core/hle/kernel/k_synchronization_object.h
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@ -35,6 +35,38 @@ public:
[[nodiscard]] std::vector<KThread*> GetWaitingThreadsForDebugging() const;
void LinkNode(ThreadListNode* node) {
// Link the node to the list.
if (thread_list_tail == nullptr) {
thread_list_head = node;
} else {
thread_list_tail->next = node;
}
thread_list_tail = node;
}
void UnlinkNode(ThreadListNode* node) {
// Unlink the node from the list.
ThreadListNode* prev_ptr =
reinterpret_cast<ThreadListNode*>(std::addressof(thread_list_head));
ThreadListNode* prev_val = nullptr;
ThreadListNode *prev, *tail_prev;
do {
prev = prev_ptr;
prev_ptr = prev_ptr->next;
tail_prev = prev_val;
prev_val = prev_ptr;
} while (prev_ptr != node);
if (thread_list_tail == node) {
thread_list_tail = tail_prev;
}
prev->next = node->next;
}
protected:
explicit KSynchronizationObject(KernelCore& kernel);
~KSynchronizationObject() override;

42
src/core/hle/kernel/k_thread.cpp
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@ -303,7 +303,7 @@ void KThread::Wakeup() {
if (GetState() == ThreadState::Waiting) {
if (sleeping_queue != nullptr) {
sleeping_queue->WakeupThread(this);
sleeping_queue->EndWait(this, ResultSuccess);
} else {
SetState(ThreadState::Runnable);
}
@ -331,7 +331,7 @@ void KThread::StartTermination() {
// Signal.
signaled = true;
NotifyAvailable();
KSynchronizationObject::NotifyAvailable();
// Clear previous thread in KScheduler.
KScheduler::ClearPreviousThread(kernel, this);
@ -1026,6 +1026,44 @@ ResultCode KThread::Sleep(s64 timeout) {
return ResultSuccess;
}
void KThread::BeginWait(KThreadQueue* queue) {
// Set our state as waiting.
SetState(ThreadState::Waiting);
// Set our wait queue.
sleeping_queue = queue;
}
void KThread::NotifyAvailable(KSynchronizationObject* signaled_object, ResultCode wait_result_) {
// Lock the scheduler.
KScopedSchedulerLock sl(kernel);
// If we're waiting, notify our queue that we're available.
if (GetState() == ThreadState::Waiting) {
sleeping_queue->NotifyAvailable(this, signaled_object, wait_result_);
}
}
void KThread::EndWait(ResultCode wait_result_) {
// Lock the scheduler.
KScopedSchedulerLock sl(kernel);
// If we're waiting, notify our queue that we're available.
if (GetState() == ThreadState::Waiting) {
sleeping_queue->EndWait(this, wait_result_);
}
}
void KThread::CancelWait(ResultCode wait_result_, bool cancel_timer_task) {
// Lock the scheduler.
KScopedSchedulerLock sl(kernel);
// If we're waiting, notify our queue that we're available.
if (GetState() == ThreadState::Waiting) {
sleeping_queue->CancelWait(this, wait_result_, cancel_timer_task);
}
}
void KThread::SetState(ThreadState state) {
KScopedSchedulerLock sl{kernel};

27
src/core/hle/kernel/k_thread.h
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@ -202,6 +202,23 @@ public:
wait_result = wait_res;
}
constexpr void SetSyncedIndex(s32 index) {
synced_index = index;
}
constexpr s32 GetSyncedIndex() const {
return synced_index;
}
constexpr void SetWaitResult(ResultCode wait_res) {
wait_result = wait_res;
synced_object = nullptr;
}
constexpr ResultCode GetWaitResult() const {
return wait_result;
}
[[nodiscard]] ResultCode GetWaitResult(KSynchronizationObject** out) const {
*out = synced_object;
return wait_result;
@ -596,6 +613,15 @@ public:
address_key_value = val;
}
void ClearWaitQueue() {
sleeping_queue = nullptr;
}
void BeginWait(KThreadQueue* queue);
void NotifyAvailable(KSynchronizationObject* signaled_object, ResultCode wait_result_);
void EndWait(ResultCode wait_result_);
void CancelWait(ResultCode wait_result_, bool cancel_timer_task);
[[nodiscard]] bool HasWaiters() const {
return !waiter_list.empty();
}
@ -707,6 +733,7 @@ private:
u32 address_key_value{};
u32 suspend_request_flags{};
u32 suspend_allowed_flags{};
s32 synced_index{};
ResultCode wait_result{ResultSuccess};
s32 base_priority{};
s32 physical_ideal_core_id{};

51
src/core/hle/kernel/k_thread_queue.cpp Normal file
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@ -0,0 +1,51 @@
// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "core/hle/kernel/k_thread_queue.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/time_manager.h"
namespace Kernel {
void KThreadQueue::NotifyAvailable([[maybe_unused]] KThread* waiting_thread,
[[maybe_unused]] KSynchronizationObject* signaled_object,
[[maybe_unused]] ResultCode wait_result) {}
void KThreadQueue::EndWait(KThread* waiting_thread, ResultCode wait_result) {
// Set the thread's wait result.
waiting_thread->SetWaitResult(wait_result);
// Set the thread as runnable.
waiting_thread->SetState(ThreadState::Runnable);
// Clear the thread's wait queue.
waiting_thread->ClearWaitQueue();
// Cancel the thread task.
kernel.TimeManager().UnscheduleTimeEvent(waiting_thread);
}
void KThreadQueue::CancelWait(KThread* waiting_thread, ResultCode wait_result,
bool cancel_timer_task) {
// Set the thread's wait result.
waiting_thread->SetWaitResult(wait_result);
// Set the thread as runnable.
waiting_thread->SetState(ThreadState::Runnable);
// Clear the thread's wait queue.
waiting_thread->ClearWaitQueue();
// Cancel the thread task.
if (cancel_timer_task) {
kernel.TimeManager().UnscheduleTimeEvent(waiting_thread);
}
}
void KThreadQueueWithoutEndWait::EndWait([[maybe_unused]] KThread* waiting_thread,
[[maybe_unused]] ResultCode wait_result) {}
} // namespace Kernel

17
src/core/hle/kernel/k_thread_queue.h
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@ -4,6 +4,7 @@
#pragma once
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_thread.h"
namespace Kernel {
@ -11,7 +12,16 @@ namespace Kernel {
class KThreadQueue {
public:
explicit KThreadQueue(KernelCore& kernel_) : kernel{kernel_} {}
virtual ~KThreadQueue(){};
virtual void NotifyAvailable(KThread* waiting_thread, KSynchronizationObject* signaled_object,
ResultCode wait_result);
virtual void EndWait(KThread* waiting_thread, ResultCode wait_result);
virtual void CancelWait(KThread* waiting_thread, ResultCode wait_result,
bool cancel_timer_task);
// Deprecated, will be removed in subsequent commits.
public:
bool IsEmpty() const {
return wait_list.empty();
}
@ -78,4 +88,11 @@ private:
KThread::WaiterList wait_list{};
};
class KThreadQueueWithoutEndWait : public KThreadQueue {
public:
explicit KThreadQueueWithoutEndWait(KernelCore& kernel_) : KThreadQueue(kernel_) {}
virtual void EndWait(KThread* waiting_thread, ResultCode wait_result) override final;
};
} // namespace Kernel