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Diffstat (limited to 'src/core/hle/kernel/thread.cpp')
-rw-r--r-- | src/core/hle/kernel/thread.cpp | 478 |
1 files changed, 0 insertions, 478 deletions
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp deleted file mode 100644 index a4f9e0d97..000000000 --- a/src/core/hle/kernel/thread.cpp +++ /dev/null @@ -1,478 +0,0 @@ -// Copyright 2014 Citra Emulator Project / PPSSPP Project -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#include <algorithm> -#include <cinttypes> -#include <optional> -#include <vector> - -#include "common/assert.h" -#include "common/common_types.h" -#include "common/fiber.h" -#include "common/logging/log.h" -#include "common/thread_queue_list.h" -#include "core/core.h" -#include "core/cpu_manager.h" -#include "core/hardware_properties.h" -#include "core/hle/kernel/errors.h" -#include "core/hle/kernel/handle_table.h" -#include "core/hle/kernel/k_scheduler.h" -#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h" -#include "core/hle/kernel/kernel.h" -#include "core/hle/kernel/object.h" -#include "core/hle/kernel/process.h" -#include "core/hle/kernel/thread.h" -#include "core/hle/kernel/time_manager.h" -#include "core/hle/result.h" -#include "core/memory.h" - -#ifdef ARCHITECTURE_x86_64 -#include "core/arm/dynarmic/arm_dynarmic_32.h" -#include "core/arm/dynarmic/arm_dynarmic_64.h" -#endif - -namespace Kernel { - -bool Thread::ShouldWait(const Thread* thread) const { - return status != ThreadStatus::Dead; -} - -bool Thread::IsSignaled() const { - return status == ThreadStatus::Dead; -} - -void Thread::Acquire(Thread* thread) { - ASSERT_MSG(!ShouldWait(thread), "object unavailable!"); -} - -Thread::Thread(KernelCore& kernel) : SynchronizationObject{kernel} {} -Thread::~Thread() = default; - -void Thread::Stop() { - { - KScopedSchedulerLock lock(kernel); - SetStatus(ThreadStatus::Dead); - Signal(); - kernel.GlobalHandleTable().Close(global_handle); - - if (owner_process) { - owner_process->UnregisterThread(this); - - // Mark the TLS slot in the thread's page as free. - owner_process->FreeTLSRegion(tls_address); - } - has_exited = true; - } - global_handle = 0; -} - -void Thread::ResumeFromWait() { - KScopedSchedulerLock lock(kernel); - switch (status) { - case ThreadStatus::Paused: - case ThreadStatus::WaitSynch: - case ThreadStatus::WaitHLEEvent: - case ThreadStatus::WaitSleep: - case ThreadStatus::WaitIPC: - case ThreadStatus::WaitMutex: - case ThreadStatus::WaitCondVar: - case ThreadStatus::WaitArb: - case ThreadStatus::Dormant: - break; - - case ThreadStatus::Ready: - // The thread's wakeup callback must have already been cleared when the thread was first - // awoken. - ASSERT(hle_callback == nullptr); - // If the thread is waiting on multiple wait objects, it might be awoken more than once - // before actually resuming. We can ignore subsequent wakeups if the thread status has - // already been set to ThreadStatus::Ready. - return; - case ThreadStatus::Dead: - // This should never happen, as threads must complete before being stopped. - DEBUG_ASSERT_MSG(false, "Thread with object id {} cannot be resumed because it's DEAD.", - GetObjectId()); - return; - } - - SetStatus(ThreadStatus::Ready); -} - -void Thread::OnWakeUp() { - KScopedSchedulerLock lock(kernel); - SetStatus(ThreadStatus::Ready); -} - -ResultCode Thread::Start() { - KScopedSchedulerLock lock(kernel); - SetStatus(ThreadStatus::Ready); - return RESULT_SUCCESS; -} - -void Thread::CancelWait() { - KScopedSchedulerLock lock(kernel); - if (GetSchedulingStatus() != ThreadSchedStatus::Paused || !is_waiting_on_sync) { - is_sync_cancelled = true; - return; - } - // TODO(Blinkhawk): Implement cancel of server session - is_sync_cancelled = false; - SetSynchronizationResults(nullptr, ERR_SYNCHRONIZATION_CANCELED); - SetStatus(ThreadStatus::Ready); -} - -static void ResetThreadContext32(Core::ARM_Interface::ThreadContext32& context, u32 stack_top, - u32 entry_point, u32 arg) { - context = {}; - context.cpu_registers[0] = arg; - context.cpu_registers[15] = entry_point; - context.cpu_registers[13] = stack_top; -} - -static void ResetThreadContext64(Core::ARM_Interface::ThreadContext64& context, VAddr stack_top, - VAddr entry_point, u64 arg) { - context = {}; - context.cpu_registers[0] = arg; - context.pc = entry_point; - context.sp = stack_top; - // TODO(merry): Perform a hardware test to determine the below value. - context.fpcr = 0; -} - -std::shared_ptr<Common::Fiber>& Thread::GetHostContext() { - return host_context; -} - -ResultVal<std::shared_ptr<Thread>> Thread::Create(Core::System& system, ThreadType type_flags, - std::string name, VAddr entry_point, u32 priority, - u64 arg, s32 processor_id, VAddr stack_top, - Process* owner_process) { - std::function<void(void*)> init_func = Core::CpuManager::GetGuestThreadStartFunc(); - void* init_func_parameter = system.GetCpuManager().GetStartFuncParamater(); - return Create(system, type_flags, name, entry_point, priority, arg, processor_id, stack_top, - owner_process, std::move(init_func), init_func_parameter); -} - -ResultVal<std::shared_ptr<Thread>> Thread::Create(Core::System& system, ThreadType type_flags, - std::string name, VAddr entry_point, u32 priority, - u64 arg, s32 processor_id, VAddr stack_top, - Process* owner_process, - std::function<void(void*)>&& thread_start_func, - void* thread_start_parameter) { - auto& kernel = system.Kernel(); - // Check if priority is in ranged. Lowest priority -> highest priority id. - if (priority > THREADPRIO_LOWEST && ((type_flags & THREADTYPE_IDLE) == 0)) { - LOG_ERROR(Kernel_SVC, "Invalid thread priority: {}", priority); - return ERR_INVALID_THREAD_PRIORITY; - } - - if (processor_id > THREADPROCESSORID_MAX) { - LOG_ERROR(Kernel_SVC, "Invalid processor id: {}", processor_id); - return ERR_INVALID_PROCESSOR_ID; - } - - if (owner_process) { - if (!system.Memory().IsValidVirtualAddress(*owner_process, entry_point)) { - LOG_ERROR(Kernel_SVC, "(name={}): invalid entry {:016X}", name, entry_point); - // TODO (bunnei): Find the correct error code to use here - return RESULT_UNKNOWN; - } - } - - std::shared_ptr<Thread> thread = std::make_shared<Thread>(kernel); - - thread->thread_id = kernel.CreateNewThreadID(); - thread->status = ThreadStatus::Dormant; - thread->entry_point = entry_point; - thread->stack_top = stack_top; - thread->disable_count = 1; - thread->tpidr_el0 = 0; - thread->nominal_priority = thread->current_priority = priority; - thread->schedule_count = -1; - thread->last_scheduled_tick = 0; - thread->processor_id = processor_id; - thread->ideal_core = processor_id; - thread->affinity_mask.SetAffinity(processor_id, true); - thread->wait_objects = nullptr; - thread->mutex_wait_address = 0; - thread->condvar_wait_address = 0; - thread->wait_handle = 0; - thread->name = std::move(name); - thread->global_handle = kernel.GlobalHandleTable().Create(thread).Unwrap(); - thread->owner_process = owner_process; - thread->type = type_flags; - if ((type_flags & THREADTYPE_IDLE) == 0) { - auto& scheduler = kernel.GlobalSchedulerContext(); - scheduler.AddThread(thread); - } - if (owner_process) { - thread->tls_address = thread->owner_process->CreateTLSRegion(); - thread->owner_process->RegisterThread(thread.get()); - } else { - thread->tls_address = 0; - } - - // TODO(peachum): move to ScheduleThread() when scheduler is added so selected core is used - // to initialize the context - if ((type_flags & THREADTYPE_HLE) == 0) { - ResetThreadContext32(thread->context_32, static_cast<u32>(stack_top), - static_cast<u32>(entry_point), static_cast<u32>(arg)); - ResetThreadContext64(thread->context_64, stack_top, entry_point, arg); - } - thread->host_context = - std::make_shared<Common::Fiber>(std::move(thread_start_func), thread_start_parameter); - - return MakeResult<std::shared_ptr<Thread>>(std::move(thread)); -} - -void Thread::SetPriority(u32 priority) { - KScopedSchedulerLock lock(kernel); - ASSERT_MSG(priority <= THREADPRIO_LOWEST && priority >= THREADPRIO_HIGHEST, - "Invalid priority value."); - nominal_priority = priority; - UpdatePriority(); -} - -void Thread::SetSynchronizationResults(SynchronizationObject* object, ResultCode result) { - signaling_object = object; - signaling_result = result; -} - -s32 Thread::GetSynchronizationObjectIndex(std::shared_ptr<SynchronizationObject> object) const { - ASSERT_MSG(!wait_objects->empty(), "Thread is not waiting for anything"); - const auto match = std::find(wait_objects->rbegin(), wait_objects->rend(), object); - return static_cast<s32>(std::distance(match, wait_objects->rend()) - 1); -} - -VAddr Thread::GetCommandBufferAddress() const { - // Offset from the start of TLS at which the IPC command buffer begins. - constexpr u64 command_header_offset = 0x80; - return GetTLSAddress() + command_header_offset; -} - -void Thread::SetStatus(ThreadStatus new_status) { - if (new_status == status) { - return; - } - - switch (new_status) { - case ThreadStatus::Ready: - SetSchedulingStatus(ThreadSchedStatus::Runnable); - break; - case ThreadStatus::Dormant: - SetSchedulingStatus(ThreadSchedStatus::None); - break; - case ThreadStatus::Dead: - SetSchedulingStatus(ThreadSchedStatus::Exited); - break; - default: - SetSchedulingStatus(ThreadSchedStatus::Paused); - break; - } - - status = new_status; -} - -void Thread::AddMutexWaiter(std::shared_ptr<Thread> thread) { - if (thread->lock_owner.get() == this) { - // If the thread is already waiting for this thread to release the mutex, ensure that the - // waiters list is consistent and return without doing anything. - const auto iter = std::find(wait_mutex_threads.begin(), wait_mutex_threads.end(), thread); - ASSERT(iter != wait_mutex_threads.end()); - return; - } - - // A thread can't wait on two different mutexes at the same time. - ASSERT(thread->lock_owner == nullptr); - - // Ensure that the thread is not already in the list of mutex waiters - const auto iter = std::find(wait_mutex_threads.begin(), wait_mutex_threads.end(), thread); - ASSERT(iter == wait_mutex_threads.end()); - - // Keep the list in an ordered fashion - const auto insertion_point = std::find_if( - wait_mutex_threads.begin(), wait_mutex_threads.end(), - [&thread](const auto& entry) { return entry->GetPriority() > thread->GetPriority(); }); - wait_mutex_threads.insert(insertion_point, thread); - thread->lock_owner = SharedFrom(this); - - UpdatePriority(); -} - -void Thread::RemoveMutexWaiter(std::shared_ptr<Thread> thread) { - ASSERT(thread->lock_owner.get() == this); - - // Ensure that the thread is in the list of mutex waiters - const auto iter = std::find(wait_mutex_threads.begin(), wait_mutex_threads.end(), thread); - ASSERT(iter != wait_mutex_threads.end()); - - wait_mutex_threads.erase(iter); - - thread->lock_owner = nullptr; - UpdatePriority(); -} - -void Thread::UpdatePriority() { - // If any of the threads waiting on the mutex have a higher priority - // (taking into account priority inheritance), then this thread inherits - // that thread's priority. - u32 new_priority = nominal_priority; - if (!wait_mutex_threads.empty()) { - if (wait_mutex_threads.front()->current_priority < new_priority) { - new_priority = wait_mutex_threads.front()->current_priority; - } - } - - if (new_priority == current_priority) { - return; - } - - if (GetStatus() == ThreadStatus::WaitCondVar) { - owner_process->RemoveConditionVariableThread(SharedFrom(this)); - } - - SetCurrentPriority(new_priority); - - if (GetStatus() == ThreadStatus::WaitCondVar) { - owner_process->InsertConditionVariableThread(SharedFrom(this)); - } - - if (!lock_owner) { - return; - } - - // Ensure that the thread is within the correct location in the waiting list. - auto old_owner = lock_owner; - lock_owner->RemoveMutexWaiter(SharedFrom(this)); - old_owner->AddMutexWaiter(SharedFrom(this)); - - // Recursively update the priority of the thread that depends on the priority of this one. - lock_owner->UpdatePriority(); -} - -bool Thread::AllSynchronizationObjectsReady() const { - return std::none_of(wait_objects->begin(), wait_objects->end(), - [this](const std::shared_ptr<SynchronizationObject>& object) { - return object->ShouldWait(this); - }); -} - -bool Thread::InvokeHLECallback(std::shared_ptr<Thread> thread) { - ASSERT(hle_callback); - return hle_callback(std::move(thread)); -} - -ResultCode Thread::SetActivity(ThreadActivity value) { - KScopedSchedulerLock lock(kernel); - - auto sched_status = GetSchedulingStatus(); - - if (sched_status != ThreadSchedStatus::Runnable && sched_status != ThreadSchedStatus::Paused) { - return ERR_INVALID_STATE; - } - - if (IsPendingTermination()) { - return RESULT_SUCCESS; - } - - if (value == ThreadActivity::Paused) { - if ((pausing_state & static_cast<u32>(ThreadSchedFlags::ThreadPauseFlag)) != 0) { - return ERR_INVALID_STATE; - } - AddSchedulingFlag(ThreadSchedFlags::ThreadPauseFlag); - } else { - if ((pausing_state & static_cast<u32>(ThreadSchedFlags::ThreadPauseFlag)) == 0) { - return ERR_INVALID_STATE; - } - RemoveSchedulingFlag(ThreadSchedFlags::ThreadPauseFlag); - } - return RESULT_SUCCESS; -} - -ResultCode Thread::Sleep(s64 nanoseconds) { - Handle event_handle{}; - { - KScopedSchedulerLockAndSleep lock(kernel, event_handle, this, nanoseconds); - SetStatus(ThreadStatus::WaitSleep); - } - - if (event_handle != InvalidHandle) { - auto& time_manager = kernel.TimeManager(); - time_manager.UnscheduleTimeEvent(event_handle); - } - return RESULT_SUCCESS; -} - -void Thread::AddSchedulingFlag(ThreadSchedFlags flag) { - const u32 old_state = scheduling_state; - pausing_state |= static_cast<u32>(flag); - const u32 base_scheduling = static_cast<u32>(GetSchedulingStatus()); - scheduling_state = base_scheduling | pausing_state; - KScheduler::OnThreadStateChanged(kernel, this, old_state); -} - -void Thread::RemoveSchedulingFlag(ThreadSchedFlags flag) { - const u32 old_state = scheduling_state; - pausing_state &= ~static_cast<u32>(flag); - const u32 base_scheduling = static_cast<u32>(GetSchedulingStatus()); - scheduling_state = base_scheduling | pausing_state; - KScheduler::OnThreadStateChanged(kernel, this, old_state); -} - -void Thread::SetSchedulingStatus(ThreadSchedStatus new_status) { - const u32 old_state = scheduling_state; - scheduling_state = (scheduling_state & static_cast<u32>(ThreadSchedMasks::HighMask)) | - static_cast<u32>(new_status); - KScheduler::OnThreadStateChanged(kernel, this, old_state); -} - -void Thread::SetCurrentPriority(u32 new_priority) { - const u32 old_priority = std::exchange(current_priority, new_priority); - KScheduler::OnThreadPriorityChanged(kernel, this, kernel.CurrentScheduler()->GetCurrentThread(), - old_priority); -} - -ResultCode Thread::SetCoreAndAffinityMask(s32 new_core, u64 new_affinity_mask) { - KScopedSchedulerLock lock(kernel); - const auto HighestSetCore = [](u64 mask, u32 max_cores) { - for (s32 core = static_cast<s32>(max_cores - 1); core >= 0; core--) { - if (((mask >> core) & 1) != 0) { - return core; - } - } - return -1; - }; - - const bool use_override = affinity_override_count != 0; - if (new_core == THREADPROCESSORID_DONT_UPDATE) { - new_core = use_override ? ideal_core_override : ideal_core; - if ((new_affinity_mask & (1ULL << new_core)) == 0) { - LOG_ERROR(Kernel, "New affinity mask is incorrect! new_core={}, new_affinity_mask={}", - new_core, new_affinity_mask); - return ERR_INVALID_COMBINATION; - } - } - if (use_override) { - ideal_core_override = new_core; - } else { - const auto old_affinity_mask = affinity_mask; - affinity_mask.SetAffinityMask(new_affinity_mask); - ideal_core = new_core; - if (old_affinity_mask.GetAffinityMask() != new_affinity_mask) { - const s32 old_core = processor_id; - if (processor_id >= 0 && !affinity_mask.GetAffinity(processor_id)) { - if (static_cast<s32>(ideal_core) < 0) { - processor_id = HighestSetCore(affinity_mask.GetAffinityMask(), - Core::Hardware::NUM_CPU_CORES); - } else { - processor_id = ideal_core; - } - } - KScheduler::OnThreadAffinityMaskChanged(kernel, this, old_affinity_mask, old_core); - } - } - return RESULT_SUCCESS; -} - -} // namespace Kernel |