diff options
32 files changed, 895 insertions, 634 deletions
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt index 506885659..49bed614a 100644 --- a/src/core/CMakeLists.txt +++ b/src/core/CMakeLists.txt @@ -187,6 +187,7 @@ add_library(core STATIC hle/kernel/k_event.h hle/kernel/k_handle_table.cpp hle/kernel/k_handle_table.h + hle/kernel/k_light_condition_variable.cpp hle/kernel/k_light_condition_variable.h hle/kernel/k_light_lock.cpp hle/kernel/k_light_lock.h @@ -239,6 +240,7 @@ 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 diff --git a/src/core/core.cpp b/src/core/core.cpp index 473ab9f81..aa96f709b 100644 --- a/src/core/core.cpp +++ b/src/core/core.cpp @@ -521,12 +521,6 @@ const ARM_Interface& System::CurrentArmInterface() const { return impl->kernel.CurrentPhysicalCore().ArmInterface(); } -std::size_t System::CurrentCoreIndex() const { - std::size_t core = impl->kernel.GetCurrentHostThreadID(); - ASSERT(core < Core::Hardware::NUM_CPU_CORES); - return core; -} - Kernel::PhysicalCore& System::CurrentPhysicalCore() { return impl->kernel.CurrentPhysicalCore(); } diff --git a/src/core/core.h b/src/core/core.h index 645e5c241..52ff90359 100644 --- a/src/core/core.h +++ b/src/core/core.h @@ -208,9 +208,6 @@ public: /// Gets an ARM interface to the CPU core that is currently running [[nodiscard]] const ARM_Interface& CurrentArmInterface() const; - /// Gets the index of the currently running CPU core - [[nodiscard]] std::size_t CurrentCoreIndex() const; - /// Gets the physical core for the CPU core that is currently running [[nodiscard]] Kernel::PhysicalCore& CurrentPhysicalCore(); diff --git a/src/core/cpu_manager.cpp b/src/core/cpu_manager.cpp index 5d43c6e5d..cbcc54891 100644 --- a/src/core/cpu_manager.cpp +++ b/src/core/cpu_manager.cpp @@ -117,17 +117,18 @@ void CpuManager::MultiCoreRunGuestLoop() { physical_core = &kernel.CurrentPhysicalCore(); } system.ExitDynarmicProfile(); - physical_core->ArmInterface().ClearExclusiveState(); - kernel.CurrentScheduler()->RescheduleCurrentCore(); + { + Kernel::KScopedDisableDispatch dd(kernel); + physical_core->ArmInterface().ClearExclusiveState(); + } } } void CpuManager::MultiCoreRunIdleThread() { auto& kernel = system.Kernel(); while (true) { - auto& physical_core = kernel.CurrentPhysicalCore(); - physical_core.Idle(); - kernel.CurrentScheduler()->RescheduleCurrentCore(); + Kernel::KScopedDisableDispatch dd(kernel); + kernel.CurrentPhysicalCore().Idle(); } } @@ -135,12 +136,12 @@ void CpuManager::MultiCoreRunSuspendThread() { auto& kernel = system.Kernel(); kernel.CurrentScheduler()->OnThreadStart(); while (true) { - auto core = kernel.GetCurrentHostThreadID(); + auto core = kernel.CurrentPhysicalCoreIndex(); auto& scheduler = *kernel.CurrentScheduler(); Kernel::KThread* current_thread = scheduler.GetCurrentThread(); Common::Fiber::YieldTo(current_thread->GetHostContext(), *core_data[core].host_context); ASSERT(scheduler.ContextSwitchPending()); - ASSERT(core == kernel.GetCurrentHostThreadID()); + ASSERT(core == kernel.CurrentPhysicalCoreIndex()); scheduler.RescheduleCurrentCore(); } } @@ -346,13 +347,9 @@ void CpuManager::RunThread(std::stop_token stop_token, std::size_t core) { sc_sync_first_use = false; } - // Abort if emulation was killed before the session really starts - if (!system.IsPoweredOn()) { - return; - } - + // Emulation was stopped if (stop_token.stop_requested()) { - break; + return; } auto current_thread = system.Kernel().CurrentScheduler()->GetCurrentThread(); diff --git a/src/core/hle/kernel/k_address_arbiter.cpp b/src/core/hle/kernel/k_address_arbiter.cpp index 1b429bc1e..783c69858 100644 --- a/src/core/hle/kernel/k_address_arbiter.cpp +++ b/src/core/hle/kernel/k_address_arbiter.cpp @@ -8,6 +8,7 @@ #include "core/hle/kernel/k_scheduler.h" #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.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" #include "core/hle/kernel/time_manager.h" @@ -28,7 +29,7 @@ bool ReadFromUser(Core::System& system, s32* out, VAddr address) { bool DecrementIfLessThan(Core::System& system, s32* out, VAddr address, s32 value) { auto& monitor = system.Monitor(); - const auto current_core = system.CurrentCoreIndex(); + const auto current_core = system.Kernel().CurrentPhysicalCoreIndex(); // TODO(bunnei): We should disable interrupts here via KScopedInterruptDisable. // TODO(bunnei): We should call CanAccessAtomic(..) here. @@ -58,7 +59,7 @@ bool DecrementIfLessThan(Core::System& system, s32* out, VAddr address, s32 valu bool UpdateIfEqual(Core::System& system, s32* out, VAddr address, s32 value, s32 new_value) { auto& monitor = system.Monitor(); - const auto current_core = system.CurrentCoreIndex(); + const auto current_core = system.Kernel().CurrentPhysicalCoreIndex(); // TODO(bunnei): We should disable interrupts here via KScopedInterruptDisable. // TODO(bunnei): We should call CanAccessAtomic(..) here. @@ -85,6 +86,27 @@ bool UpdateIfEqual(Core::System& system, s32* out, VAddr address, s32 value, s32 return true; } +class ThreadQueueImplForKAddressArbiter final : public KThreadQueue { +public: + explicit ThreadQueueImplForKAddressArbiter(KernelCore& kernel_, KAddressArbiter::ThreadTree* t) + : KThreadQueue(kernel_), m_tree(t) {} + + void CancelWait(KThread* waiting_thread, ResultCode wait_result, + bool cancel_timer_task) override { + // If the thread is waiting on an address arbiter, remove it from the tree. + if (waiting_thread->IsWaitingForAddressArbiter()) { + m_tree->erase(m_tree->iterator_to(*waiting_thread)); + waiting_thread->ClearAddressArbiter(); + } + + // Invoke the base cancel wait handler. + KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task); + } + +private: + KAddressArbiter::ThreadTree* m_tree; +}; + } // namespace ResultCode KAddressArbiter::Signal(VAddr addr, s32 count) { @@ -96,14 +118,14 @@ ResultCode KAddressArbiter::Signal(VAddr addr, s32 count) { auto it = thread_tree.nfind_light({addr, -1}); while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) && (it->GetAddressArbiterKey() == addr)) { + // End the thread's wait. KThread* target_thread = std::addressof(*it); - target_thread->SetSyncedObject(nullptr, ResultSuccess); + target_thread->EndWait(ResultSuccess); ASSERT(target_thread->IsWaitingForAddressArbiter()); - target_thread->Wakeup(); + target_thread->ClearAddressArbiter(); it = thread_tree.erase(it); - target_thread->ClearAddressArbiter(); ++num_waiters; } } @@ -129,14 +151,14 @@ ResultCode KAddressArbiter::SignalAndIncrementIfEqual(VAddr addr, s32 value, s32 auto it = thread_tree.nfind_light({addr, -1}); while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) && (it->GetAddressArbiterKey() == addr)) { + // End the thread's wait. KThread* target_thread = std::addressof(*it); - target_thread->SetSyncedObject(nullptr, ResultSuccess); + target_thread->EndWait(ResultSuccess); ASSERT(target_thread->IsWaitingForAddressArbiter()); - target_thread->Wakeup(); + target_thread->ClearAddressArbiter(); it = thread_tree.erase(it); - target_thread->ClearAddressArbiter(); ++num_waiters; } } @@ -197,14 +219,14 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32 while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) && (it->GetAddressArbiterKey() == addr)) { + // End the thread's wait. KThread* target_thread = std::addressof(*it); - target_thread->SetSyncedObject(nullptr, ResultSuccess); + target_thread->EndWait(ResultSuccess); ASSERT(target_thread->IsWaitingForAddressArbiter()); - target_thread->Wakeup(); + target_thread->ClearAddressArbiter(); it = thread_tree.erase(it); - target_thread->ClearAddressArbiter(); ++num_waiters; } } @@ -214,6 +236,7 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32 ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement, s64 timeout) { // Prepare to wait. KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread(); + ThreadQueueImplForKAddressArbiter wait_queue(kernel, std::addressof(thread_tree)); { KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout}; @@ -224,9 +247,6 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement return ResultTerminationRequested; } - // Set the synced object. - cur_thread->SetSyncedObject(nullptr, ResultTimedOut); - // Read the value from userspace. s32 user_value{}; bool succeeded{}; @@ -256,31 +276,20 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement // Set the arbiter. cur_thread->SetAddressArbiter(&thread_tree, addr); thread_tree.insert(*cur_thread); - cur_thread->SetState(ThreadState::Waiting); - cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration); - } - - // Cancel the timer wait. - kernel.TimeManager().UnscheduleTimeEvent(cur_thread); - // Remove from the address arbiter. - { - KScopedSchedulerLock sl(kernel); - - if (cur_thread->IsWaitingForAddressArbiter()) { - thread_tree.erase(thread_tree.iterator_to(*cur_thread)); - cur_thread->ClearAddressArbiter(); - } + // Wait for the thread to finish. + cur_thread->BeginWait(std::addressof(wait_queue)); + cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration); } // Get the result. - KSynchronizationObject* dummy{}; - return cur_thread->GetWaitResult(&dummy); + return cur_thread->GetWaitResult(); } ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) { // Prepare to wait. KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread(); + ThreadQueueImplForKAddressArbiter wait_queue(kernel, std::addressof(thread_tree)); { KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout}; @@ -291,9 +300,6 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) { return ResultTerminationRequested; } - // Set the synced object. - cur_thread->SetSyncedObject(nullptr, ResultTimedOut); - // Read the value from userspace. s32 user_value{}; if (!ReadFromUser(system, &user_value, addr)) { @@ -316,26 +322,14 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) { // Set the arbiter. cur_thread->SetAddressArbiter(&thread_tree, addr); thread_tree.insert(*cur_thread); - cur_thread->SetState(ThreadState::Waiting); - cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration); - } - - // Cancel the timer wait. - kernel.TimeManager().UnscheduleTimeEvent(cur_thread); - // Remove from the address arbiter. - { - KScopedSchedulerLock sl(kernel); - - if (cur_thread->IsWaitingForAddressArbiter()) { - thread_tree.erase(thread_tree.iterator_to(*cur_thread)); - cur_thread->ClearAddressArbiter(); - } + // Wait for the thread to finish. + cur_thread->BeginWait(std::addressof(wait_queue)); + cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration); } // Get the result. - KSynchronizationObject* dummy{}; - return cur_thread->GetWaitResult(&dummy); + return cur_thread->GetWaitResult(); } } // namespace Kernel diff --git a/src/core/hle/kernel/k_auto_object.h b/src/core/hle/kernel/k_auto_object.h index e4fcdbc67..165b76747 100644 --- a/src/core/hle/kernel/k_auto_object.h +++ b/src/core/hle/kernel/k_auto_object.h @@ -170,6 +170,10 @@ public: } } + const std::string& GetName() const { + return name; + } + private: void RegisterWithKernel(); void UnregisterWithKernel(); diff --git a/src/core/hle/kernel/k_condition_variable.cpp b/src/core/hle/kernel/k_condition_variable.cpp index 7fa9b8cc3..aadcc297a 100644 --- a/src/core/hle/kernel/k_condition_variable.cpp +++ b/src/core/hle/kernel/k_condition_variable.cpp @@ -11,6 +11,7 @@ #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_common.h" #include "core/hle/kernel/svc_results.h" @@ -33,7 +34,7 @@ bool WriteToUser(Core::System& system, VAddr address, const u32* p) { bool UpdateLockAtomic(Core::System& system, u32* out, VAddr address, u32 if_zero, u32 new_orr_mask) { auto& monitor = system.Monitor(); - const auto current_core = system.CurrentCoreIndex(); + const auto current_core = system.Kernel().CurrentPhysicalCoreIndex(); // Load the value from the address. const auto expected = monitor.ExclusiveRead32(current_core, address); @@ -57,6 +58,48 @@ bool UpdateLockAtomic(Core::System& system, u32* out, VAddr address, u32 if_zero return true; } +class ThreadQueueImplForKConditionVariableWaitForAddress final : public KThreadQueue { +public: + explicit ThreadQueueImplForKConditionVariableWaitForAddress(KernelCore& kernel_) + : KThreadQueue(kernel_) {} + + void CancelWait(KThread* waiting_thread, ResultCode wait_result, + bool cancel_timer_task) override { + // Remove the thread as a waiter from its owner. + waiting_thread->GetLockOwner()->RemoveWaiter(waiting_thread); + + // Invoke the base cancel wait handler. + KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task); + } +}; + +class ThreadQueueImplForKConditionVariableWaitConditionVariable final : public KThreadQueue { +private: + KConditionVariable::ThreadTree* m_tree; + +public: + explicit ThreadQueueImplForKConditionVariableWaitConditionVariable( + KernelCore& kernel_, KConditionVariable::ThreadTree* t) + : KThreadQueue(kernel_), m_tree(t) {} + + void CancelWait(KThread* waiting_thread, ResultCode wait_result, + bool cancel_timer_task) override { + // Remove the thread as a waiter from its owner. + if (KThread* owner = waiting_thread->GetLockOwner(); owner != nullptr) { + owner->RemoveWaiter(waiting_thread); + } + + // If the thread is waiting on a condvar, remove it from the tree. + if (waiting_thread->IsWaitingForConditionVariable()) { + m_tree->erase(m_tree->iterator_to(*waiting_thread)); + waiting_thread->ClearConditionVariable(); + } + + // Invoke the base cancel wait handler. + KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task); + } +}; + } // namespace KConditionVariable::KConditionVariable(Core::System& system_) @@ -78,84 +121,77 @@ ResultCode KConditionVariable::SignalToAddress(VAddr addr) { // Determine the next tag. u32 next_value{}; - if (next_owner_thread) { + if (next_owner_thread != nullptr) { next_value = next_owner_thread->GetAddressKeyValue(); if (num_waiters > 1) { next_value |= Svc::HandleWaitMask; } - next_owner_thread->SetSyncedObject(nullptr, ResultSuccess); - next_owner_thread->Wakeup(); - } - - // Write the value to userspace. - if (!WriteToUser(system, addr, std::addressof(next_value))) { - if (next_owner_thread) { - next_owner_thread->SetSyncedObject(nullptr, ResultInvalidCurrentMemory); + // Write the value to userspace. + ResultCode result{ResultSuccess}; + if (WriteToUser(system, addr, std::addressof(next_value))) [[likely]] { + result = ResultSuccess; + } else { + result = ResultInvalidCurrentMemory; } - return ResultInvalidCurrentMemory; + // Signal the next owner thread. + next_owner_thread->EndWait(result); + return result; + } else { + // Just write the value to userspace. + R_UNLESS(WriteToUser(system, addr, std::addressof(next_value)), + ResultInvalidCurrentMemory); + + return ResultSuccess; } } - - return ResultSuccess; } ResultCode KConditionVariable::WaitForAddress(Handle handle, VAddr addr, u32 value) { KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread(); + ThreadQueueImplForKConditionVariableWaitForAddress wait_queue(kernel); // Wait for the address. + KThread* owner_thread{}; { - KScopedAutoObject<KThread> owner_thread; - ASSERT(owner_thread.IsNull()); - { - KScopedSchedulerLock sl(kernel); - cur_thread->SetSyncedObject(nullptr, ResultSuccess); + KScopedSchedulerLock sl(kernel); - // Check if the thread should terminate. - R_UNLESS(!cur_thread->IsTerminationRequested(), ResultTerminationRequested); + // Check if the thread should terminate. + R_UNLESS(!cur_thread->IsTerminationRequested(), ResultTerminationRequested); - { - // Read the tag from userspace. - u32 test_tag{}; - R_UNLESS(ReadFromUser(system, std::addressof(test_tag), addr), - ResultInvalidCurrentMemory); - - // If the tag isn't the handle (with wait mask), we're done. - R_UNLESS(test_tag == (handle | Svc::HandleWaitMask), ResultSuccess); - - // Get the lock owner thread. - owner_thread = - kernel.CurrentProcess()->GetHandleTable().GetObjectWithoutPseudoHandle<KThread>( - handle); - R_UNLESS(owner_thread.IsNotNull(), ResultInvalidHandle); - - // Update the lock. - cur_thread->SetAddressKey(addr, value); - owner_thread->AddWaiter(cur_thread); - cur_thread->SetState(ThreadState::Waiting); - cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::ConditionVar); - cur_thread->SetMutexWaitAddressForDebugging(addr); - } - } - ASSERT(owner_thread.IsNotNull()); - } + // Read the tag from userspace. + u32 test_tag{}; + R_UNLESS(ReadFromUser(system, std::addressof(test_tag), addr), ResultInvalidCurrentMemory); - // Remove the thread as a waiter from the lock owner. - { - KScopedSchedulerLock sl(kernel); - KThread* owner_thread = cur_thread->GetLockOwner(); - if (owner_thread != nullptr) { - owner_thread->RemoveWaiter(cur_thread); - } + // If the tag isn't the handle (with wait mask), we're done. + R_SUCCEED_IF(test_tag != (handle | Svc::HandleWaitMask)); + + // Get the lock owner thread. + owner_thread = kernel.CurrentProcess() + ->GetHandleTable() + .GetObjectWithoutPseudoHandle<KThread>(handle) + .ReleasePointerUnsafe(); + R_UNLESS(owner_thread != nullptr, ResultInvalidHandle); + + // Update the lock. + cur_thread->SetAddressKey(addr, value); + owner_thread->AddWaiter(cur_thread); + + // Begin waiting. + cur_thread->BeginWait(std::addressof(wait_queue)); + cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::ConditionVar); + cur_thread->SetMutexWaitAddressForDebugging(addr); } + // Close our reference to the owner thread, now that the wait is over. + owner_thread->Close(); + // Get the wait result. - KSynchronizationObject* dummy{}; - return cur_thread->GetWaitResult(std::addressof(dummy)); + return cur_thread->GetWaitResult(); } -KThread* KConditionVariable::SignalImpl(KThread* thread) { +void KConditionVariable::SignalImpl(KThread* thread) { // Check pre-conditions. ASSERT(kernel.GlobalSchedulerContext().IsLocked()); @@ -169,18 +205,16 @@ KThread* KConditionVariable::SignalImpl(KThread* thread) { // TODO(bunnei): We should disable interrupts here via KScopedInterruptDisable. // TODO(bunnei): We should call CanAccessAtomic(..) here. can_access = true; - if (can_access) { + if (can_access) [[likely]] { UpdateLockAtomic(system, std::addressof(prev_tag), address, own_tag, Svc::HandleWaitMask); } } - KThread* thread_to_close = nullptr; - if (can_access) { + if (can_access) [[likely]] { if (prev_tag == Svc::InvalidHandle) { // If nobody held the lock previously, we're all good. - thread->SetSyncedObject(nullptr, ResultSuccess); - thread->Wakeup(); + thread->EndWait(ResultSuccess); } else { // Get the previous owner. KThread* owner_thread = kernel.CurrentProcess() @@ -189,33 +223,22 @@ KThread* KConditionVariable::SignalImpl(KThread* thread) { static_cast<Handle>(prev_tag & ~Svc::HandleWaitMask)) .ReleasePointerUnsafe(); - if (owner_thread) { + if (owner_thread) [[likely]] { // Add the thread as a waiter on the owner. owner_thread->AddWaiter(thread); - thread_to_close = owner_thread; + owner_thread->Close(); } else { // The lock was tagged with a thread that doesn't exist. - thread->SetSyncedObject(nullptr, ResultInvalidState); - thread->Wakeup(); + thread->EndWait(ResultInvalidState); } } } else { // If the address wasn't accessible, note so. - thread->SetSyncedObject(nullptr, ResultInvalidCurrentMemory); - thread->Wakeup(); + thread->EndWait(ResultInvalidCurrentMemory); } - - return thread_to_close; } void KConditionVariable::Signal(u64 cv_key, s32 count) { - // Prepare for signaling. - constexpr int MaxThreads = 16; - - KLinkedList<KThread> thread_list{kernel}; - std::array<KThread*, MaxThreads> thread_array; - s32 num_to_close{}; - // Perform signaling. s32 num_waiters{}; { @@ -226,14 +249,7 @@ void KConditionVariable::Signal(u64 cv_key, s32 count) { (it->GetConditionVariableKey() == cv_key)) { KThread* target_thread = std::addressof(*it); - if (KThread* thread = SignalImpl(target_thread); thread != nullptr) { - if (num_to_close < MaxThreads) { - thread_array[num_to_close++] = thread; - } else { - thread_list.push_back(*thread); - } - } - + this->SignalImpl(target_thread); it = thread_tree.erase(it); target_thread->ClearConditionVariable(); ++num_waiters; @@ -245,27 +261,16 @@ void KConditionVariable::Signal(u64 cv_key, s32 count) { WriteToUser(system, cv_key, std::addressof(has_waiter_flag)); } } - - // Close threads in the array. - for (auto i = 0; i < num_to_close; ++i) { - thread_array[i]->Close(); - } - - // Close threads in the list. - for (auto it = thread_list.begin(); it != thread_list.end(); it = thread_list.erase(it)) { - (*it).Close(); - } } ResultCode KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout) { // Prepare to wait. - KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread(); + KThread* cur_thread = GetCurrentThreadPointer(kernel); + ThreadQueueImplForKConditionVariableWaitConditionVariable wait_queue( + kernel, std::addressof(thread_tree)); { - KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout}; - - // Set the synced object. - cur_thread->SetSyncedObject(nullptr, ResultTimedOut); + KScopedSchedulerLockAndSleep slp(kernel, cur_thread, timeout); // Check that the thread isn't terminating. if (cur_thread->IsTerminationRequested()) { @@ -290,8 +295,7 @@ ResultCode KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout) } // Wake up the next owner. - next_owner_thread->SetSyncedObject(nullptr, ResultSuccess); - next_owner_thread->Wakeup(); + next_owner_thread->EndWait(ResultSuccess); } // Write to the cv key. @@ -308,40 +312,21 @@ ResultCode KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout) } } - // Update condition variable tracking. - { - cur_thread->SetConditionVariable(std::addressof(thread_tree), addr, key, value); - thread_tree.insert(*cur_thread); - } + // If timeout is zero, time out. + R_UNLESS(timeout != 0, ResultTimedOut); - // If the timeout is non-zero, set the thread as waiting. - if (timeout != 0) { - cur_thread->SetState(ThreadState::Waiting); - cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::ConditionVar); - cur_thread->SetMutexWaitAddressForDebugging(addr); - } - } - - // Cancel the timer wait. - kernel.TimeManager().UnscheduleTimeEvent(cur_thread); - - // Remove from the condition variable. - { - KScopedSchedulerLock sl(kernel); - - if (KThread* owner = cur_thread->GetLockOwner(); owner != nullptr) { - owner->RemoveWaiter(cur_thread); - } + // Update condition variable tracking. + cur_thread->SetConditionVariable(std::addressof(thread_tree), addr, key, value); + thread_tree.insert(*cur_thread); - if (cur_thread->IsWaitingForConditionVariable()) { - thread_tree.erase(thread_tree.iterator_to(*cur_thread)); - cur_thread->ClearConditionVariable(); - } + // Begin waiting. + cur_thread->BeginWait(std::addressof(wait_queue)); + cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::ConditionVar); + cur_thread->SetMutexWaitAddressForDebugging(addr); } - // Get the result. - KSynchronizationObject* dummy{}; - return cur_thread->GetWaitResult(std::addressof(dummy)); + // Get the wait result. + return cur_thread->GetWaitResult(); } } // namespace Kernel diff --git a/src/core/hle/kernel/k_condition_variable.h b/src/core/hle/kernel/k_condition_variable.h index 861dbd420..5e4815d08 100644 --- a/src/core/hle/kernel/k_condition_variable.h +++ b/src/core/hle/kernel/k_condition_variable.h @@ -34,7 +34,7 @@ public: [[nodiscard]] ResultCode Wait(VAddr addr, u64 key, u32 value, s64 timeout); private: - [[nodiscard]] KThread* SignalImpl(KThread* thread); + void SignalImpl(KThread* thread); ThreadTree thread_tree; diff --git a/src/core/hle/kernel/k_handle_table.cpp b/src/core/hle/kernel/k_handle_table.cpp index e90fc0628..cf95f0852 100644 --- a/src/core/hle/kernel/k_handle_table.cpp +++ b/src/core/hle/kernel/k_handle_table.cpp @@ -13,6 +13,7 @@ ResultCode KHandleTable::Finalize() { // Get the table and clear our record of it. u16 saved_table_size = 0; { + KScopedDisableDispatch dd(kernel); KScopedSpinLock lk(m_lock); std::swap(m_table_size, saved_table_size); @@ -43,6 +44,7 @@ bool KHandleTable::Remove(Handle handle) { // Find the object and free the entry. KAutoObject* obj = nullptr; { + KScopedDisableDispatch dd(kernel); KScopedSpinLock lk(m_lock); if (this->IsValidHandle(handle)) { @@ -62,6 +64,7 @@ bool KHandleTable::Remove(Handle handle) { } ResultCode KHandleTable::Add(Handle* out_handle, KAutoObject* obj, u16 type) { + KScopedDisableDispatch dd(kernel); KScopedSpinLock lk(m_lock); // Never exceed our capacity. @@ -84,6 +87,7 @@ ResultCode KHandleTable::Add(Handle* out_handle, KAutoObject* obj, u16 type) { } ResultCode KHandleTable::Reserve(Handle* out_handle) { + KScopedDisableDispatch dd(kernel); KScopedSpinLock lk(m_lock); // Never exceed our capacity. @@ -94,6 +98,7 @@ ResultCode KHandleTable::Reserve(Handle* out_handle) { } void KHandleTable::Unreserve(Handle handle) { + KScopedDisableDispatch dd(kernel); KScopedSpinLock lk(m_lock); // Unpack the handle. @@ -112,6 +117,7 @@ void KHandleTable::Unreserve(Handle handle) { } void KHandleTable::Register(Handle handle, KAutoObject* obj, u16 type) { + KScopedDisableDispatch dd(kernel); KScopedSpinLock lk(m_lock); // Unpack the handle. diff --git a/src/core/hle/kernel/k_handle_table.h b/src/core/hle/kernel/k_handle_table.h index 95ec905ae..4b114ec2f 100644 --- a/src/core/hle/kernel/k_handle_table.h +++ b/src/core/hle/kernel/k_handle_table.h @@ -68,6 +68,7 @@ public: template <typename T = KAutoObject> KScopedAutoObject<T> GetObjectWithoutPseudoHandle(Handle handle) const { // Lock and look up in table. + KScopedDisableDispatch dd(kernel); KScopedSpinLock lk(m_lock); if constexpr (std::is_same_v<T, KAutoObject>) { @@ -122,6 +123,7 @@ public: size_t num_opened; { // Lock the table. + KScopedDisableDispatch dd(kernel); KScopedSpinLock lk(m_lock); for (num_opened = 0; num_opened < num_handles; num_opened++) { // Get the current handle. diff --git a/src/core/hle/kernel/k_light_condition_variable.cpp b/src/core/hle/kernel/k_light_condition_variable.cpp new file mode 100644 index 000000000..a8001fffc --- /dev/null +++ b/src/core/hle/kernel/k_light_condition_variable.cpp @@ -0,0 +1,80 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "core/hle/kernel/k_light_condition_variable.h" +#include "core/hle/kernel/k_scheduler.h" +#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h" +#include "core/hle/kernel/k_thread_queue.h" +#include "core/hle/kernel/svc_results.h" + +namespace Kernel { + +namespace { + +class ThreadQueueImplForKLightConditionVariable final : public KThreadQueue { +public: + ThreadQueueImplForKLightConditionVariable(KernelCore& kernel_, KThread::WaiterList* wl, + bool term) + : KThreadQueue(kernel_), m_wait_list(wl), m_allow_terminating_thread(term) {} + + void CancelWait(KThread* waiting_thread, ResultCode wait_result, + bool cancel_timer_task) override { + // Only process waits if we're allowed to. + if (ResultTerminationRequested == wait_result && m_allow_terminating_thread) { + return; + } + + // Remove the thread from the waiting thread from the light condition variable. + m_wait_list->erase(m_wait_list->iterator_to(*waiting_thread)); + + // Invoke the base cancel wait handler. + KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task); + } + +private: + KThread::WaiterList* m_wait_list; + bool m_allow_terminating_thread; +}; + +} // namespace + +void KLightConditionVariable::Wait(KLightLock* lock, s64 timeout, bool allow_terminating_thread) { + // Create thread queue. + KThread* owner = GetCurrentThreadPointer(kernel); + + ThreadQueueImplForKLightConditionVariable wait_queue(kernel, std::addressof(wait_list), + allow_terminating_thread); + + // Sleep the thread. + { + KScopedSchedulerLockAndSleep lk(kernel, owner, timeout); + + if (!allow_terminating_thread && owner->IsTerminationRequested()) { + lk.CancelSleep(); + return; + } + + lock->Unlock(); + + // Add the thread to the queue. + wait_list.push_back(*owner); + + // Begin waiting. + owner->BeginWait(std::addressof(wait_queue)); + } + + // Re-acquire the lock. + lock->Lock(); +} + +void KLightConditionVariable::Broadcast() { + KScopedSchedulerLock lk(kernel); + + // Signal all threads. + for (auto it = wait_list.begin(); it != wait_list.end(); it = wait_list.erase(it)) { + it->EndWait(ResultSuccess); + } +} + +} // namespace Kernel diff --git a/src/core/hle/kernel/k_light_condition_variable.h b/src/core/hle/kernel/k_light_condition_variable.h index fb0ad783a..5d6d7f128 100644 --- a/src/core/hle/kernel/k_light_condition_variable.h +++ b/src/core/hle/kernel/k_light_condition_variable.h @@ -2,72 +2,24 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. -// This file references various implementation details from Atmosphere, an open-source firmware for -// the Nintendo Switch. Copyright 2018-2020 Atmosphere-NX. - #pragma once #include "common/common_types.h" -#include "core/hle/kernel/k_scheduler.h" -#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h" -#include "core/hle/kernel/time_manager.h" +#include "core/hle/kernel/k_thread.h" namespace Kernel { + class KernelCore; +class KLightLock; class KLightConditionVariable { public: explicit KLightConditionVariable(KernelCore& kernel_) : kernel{kernel_} {} - void Wait(KLightLock* lock, s64 timeout = -1, bool allow_terminating_thread = true) { - WaitImpl(lock, timeout, allow_terminating_thread); - } - - void Broadcast() { - KScopedSchedulerLock lk{kernel}; - - // Signal all threads. - for (auto& thread : wait_list) { - thread.SetState(ThreadState::Runnable); - } - } + void Wait(KLightLock* lock, s64 timeout = -1, bool allow_terminating_thread = true); + void Broadcast(); private: - void WaitImpl(KLightLock* lock, s64 timeout, bool allow_terminating_thread) { - KThread* owner = GetCurrentThreadPointer(kernel); - - // Sleep the thread. - { - KScopedSchedulerLockAndSleep lk{kernel, owner, timeout}; - - if (!allow_terminating_thread && owner->IsTerminationRequested()) { - lk.CancelSleep(); - return; - } - - lock->Unlock(); - - // Set the thread as waiting. - GetCurrentThread(kernel).SetState(ThreadState::Waiting); - - // Add the thread to the queue. - wait_list.push_back(GetCurrentThread(kernel)); - } - - // Remove the thread from the wait list. - { - KScopedSchedulerLock sl{kernel}; - - wait_list.erase(wait_list.iterator_to(GetCurrentThread(kernel))); - } - - // Cancel the task that the sleep setup. - kernel.TimeManager().UnscheduleTimeEvent(owner); - - // Re-acquire the lock. - lock->Lock(); - } - KernelCore& kernel; KThread::WaiterList wait_list{}; }; diff --git a/src/core/hle/kernel/k_light_lock.cpp b/src/core/hle/kernel/k_light_lock.cpp index 0896e705f..4620342eb 100644 --- a/src/core/hle/kernel/k_light_lock.cpp +++ b/src/core/hle/kernel/k_light_lock.cpp @@ -5,44 +5,59 @@ #include "core/hle/kernel/k_light_lock.h" #include "core/hle/kernel/k_scheduler.h" #include "core/hle/kernel/k_thread.h" +#include "core/hle/kernel/k_thread_queue.h" #include "core/hle/kernel/kernel.h" namespace Kernel { +namespace { + +class ThreadQueueImplForKLightLock final : public KThreadQueue { +public: + explicit ThreadQueueImplForKLightLock(KernelCore& kernel_) : KThreadQueue(kernel_) {} + + void CancelWait(KThread* waiting_thread, ResultCode wait_result, + bool cancel_timer_task) override { + // Remove the thread as a waiter from its owner. + if (KThread* owner = waiting_thread->GetLockOwner(); owner != nullptr) { + owner->RemoveWaiter(waiting_thread); + } + + // Invoke the base cancel wait handler. + KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task); + } +}; + +} // namespace + void KLightLock::Lock() { const uintptr_t cur_thread = reinterpret_cast<uintptr_t>(GetCurrentThreadPointer(kernel)); - const uintptr_t cur_thread_tag = (cur_thread | 1); while (true) { uintptr_t old_tag = tag.load(std::memory_order_relaxed); - while (!tag.compare_exchange_weak(old_tag, (old_tag == 0) ? cur_thread : old_tag | 1, + while (!tag.compare_exchange_weak(old_tag, (old_tag == 0) ? cur_thread : (old_tag | 1), std::memory_order_acquire)) { - if ((old_tag | 1) == cur_thread_tag) { - return; - } } - if ((old_tag == 0) || ((old_tag | 1) == cur_thread_tag)) { + if (old_tag == 0 || this->LockSlowPath(old_tag | 1, cur_thread)) { break; } - - LockSlowPath(old_tag | 1, cur_thread); } } void KLightLock::Unlock() { const uintptr_t cur_thread = reinterpret_cast<uintptr_t>(GetCurrentThreadPointer(kernel)); + uintptr_t expected = cur_thread; - do { - if (expected != cur_thread) { - return UnlockSlowPath(cur_thread); - } - } while (!tag.compare_exchange_weak(expected, 0, std::memory_order_release)); + if (!tag.compare_exchange_strong(expected, 0, std::memory_order_release)) { + this->UnlockSlowPath(cur_thread); + } } -void KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) { +bool KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) { KThread* cur_thread = reinterpret_cast<KThread*>(_cur_thread); + ThreadQueueImplForKLightLock wait_queue(kernel); // Pend the current thread waiting on the owner thread. { @@ -50,7 +65,7 @@ void KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) { // Ensure we actually have locking to do. if (tag.load(std::memory_order_relaxed) != _owner) { - return; + return false; } // Add the current thread as a waiter on the owner. @@ -58,22 +73,15 @@ void KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) { cur_thread->SetAddressKey(reinterpret_cast<uintptr_t>(std::addressof(tag))); owner_thread->AddWaiter(cur_thread); - // Set thread states. - cur_thread->SetState(ThreadState::Waiting); + // Begin waiting to hold the lock. + cur_thread->BeginWait(std::addressof(wait_queue)); if (owner_thread->IsSuspended()) { owner_thread->ContinueIfHasKernelWaiters(); } } - // We're no longer waiting on the lock owner. - { - KScopedSchedulerLock sl{kernel}; - - if (KThread* owner_thread = cur_thread->GetLockOwner(); owner_thread != nullptr) { - owner_thread->RemoveWaiter(cur_thread); - } - } + return true; } void KLightLock::UnlockSlowPath(uintptr_t _cur_thread) { @@ -81,22 +89,20 @@ void KLightLock::UnlockSlowPath(uintptr_t _cur_thread) { // Unlock. { - KScopedSchedulerLock sl{kernel}; + KScopedSchedulerLock sl(kernel); // Get the next owner. - s32 num_waiters = 0; + s32 num_waiters; KThread* next_owner = owner_thread->RemoveWaiterByKey( std::addressof(num_waiters), reinterpret_cast<uintptr_t>(std::addressof(tag))); // Pass the lock to the next owner. uintptr_t next_tag = 0; if (next_owner != nullptr) { - next_tag = reinterpret_cast<uintptr_t>(next_owner); - if (num_waiters > 1) { - next_tag |= 0x1; - } + next_tag = + reinterpret_cast<uintptr_t>(next_owner) | static_cast<uintptr_t>(num_waiters > 1); - next_owner->SetState(ThreadState::Runnable); + next_owner->EndWait(ResultSuccess); if (next_owner->IsSuspended()) { next_owner->ContinueIfHasKernelWaiters(); @@ -110,7 +116,7 @@ void KLightLock::UnlockSlowPath(uintptr_t _cur_thread) { } // Write the new tag value. - tag.store(next_tag); + tag.store(next_tag, std::memory_order_release); } } diff --git a/src/core/hle/kernel/k_light_lock.h b/src/core/hle/kernel/k_light_lock.h index ad853661d..4163b8a85 100644 --- a/src/core/hle/kernel/k_light_lock.h +++ b/src/core/hle/kernel/k_light_lock.h @@ -20,7 +20,7 @@ public: void Unlock(); - void LockSlowPath(uintptr_t owner, uintptr_t cur_thread); + bool LockSlowPath(uintptr_t owner, uintptr_t cur_thread); void UnlockSlowPath(uintptr_t cur_thread); diff --git a/src/core/hle/kernel/k_process.cpp b/src/core/hle/kernel/k_process.cpp index 1aad061e1..90dda40dc 100644 --- a/src/core/hle/kernel/k_process.cpp +++ b/src/core/hle/kernel/k_process.cpp @@ -60,6 +60,7 @@ void SetupMainThread(Core::System& system, KProcess& owner_process, u32 priority thread->GetContext64().cpu_registers[0] = 0; thread->GetContext32().cpu_registers[1] = thread_handle; thread->GetContext64().cpu_registers[1] = thread_handle; + thread->DisableDispatch(); auto& kernel = system.Kernel(); // Threads by default are dormant, wake up the main thread so it runs when the scheduler fires @@ -227,12 +228,15 @@ void KProcess::PinCurrentThread() { const s32 core_id = GetCurrentCoreId(kernel); KThread* cur_thread = GetCurrentThreadPointer(kernel); - // Pin it. - PinThread(core_id, cur_thread); - cur_thread->Pin(); + // If the thread isn't terminated, pin it. + if (!cur_thread->IsTerminationRequested()) { + // Pin it. + PinThread(core_id, cur_thread); + cur_thread->Pin(); - // An update is needed. - KScheduler::SetSchedulerUpdateNeeded(kernel); + // An update is needed. + KScheduler::SetSchedulerUpdateNeeded(kernel); + } } void KProcess::UnpinCurrentThread() { @@ -250,6 +254,20 @@ void KProcess::UnpinCurrentThread() { KScheduler::SetSchedulerUpdateNeeded(kernel); } +void KProcess::UnpinThread(KThread* thread) { + ASSERT(kernel.GlobalSchedulerContext().IsLocked()); + + // Get the thread's core id. + const auto core_id = thread->GetActiveCore(); + + // Unpin it. + UnpinThread(core_id, thread); + thread->Unpin(); + + // An update is needed. + KScheduler::SetSchedulerUpdateNeeded(kernel); +} + ResultCode KProcess::AddSharedMemory(KSharedMemory* shmem, [[maybe_unused]] VAddr address, [[maybe_unused]] size_t size) { // Lock ourselves, to prevent concurrent access. diff --git a/src/core/hle/kernel/k_process.h b/src/core/hle/kernel/k_process.h index 8a8c1fcbb..cb93c7e24 100644 --- a/src/core/hle/kernel/k_process.h +++ b/src/core/hle/kernel/k_process.h @@ -347,6 +347,7 @@ public: void PinCurrentThread(); void UnpinCurrentThread(); + void UnpinThread(KThread* thread); KLightLock& GetStateLock() { return state_lock; diff --git a/src/core/hle/kernel/k_scheduler.cpp b/src/core/hle/kernel/k_scheduler.cpp index 6a7d80d03..277201de4 100644 --- a/src/core/hle/kernel/k_scheduler.cpp +++ b/src/core/hle/kernel/k_scheduler.cpp @@ -240,8 +240,8 @@ void KScheduler::OnThreadPriorityChanged(KernelCore& kernel, KThread* thread, s3 // If the thread is runnable, we want to change its priority in the queue. if (thread->GetRawState() == ThreadState::Runnable) { - GetPriorityQueue(kernel).ChangePriority( - old_priority, thread == kernel.CurrentScheduler()->GetCurrentThread(), thread); + GetPriorityQueue(kernel).ChangePriority(old_priority, + thread == kernel.GetCurrentEmuThread(), thread); IncrementScheduledCount(thread); SetSchedulerUpdateNeeded(kernel); } @@ -360,7 +360,7 @@ void KScheduler::RotateScheduledQueue(s32 cpu_core_id, s32 priority) { } bool KScheduler::CanSchedule(KernelCore& kernel) { - return kernel.CurrentScheduler()->GetCurrentThread()->GetDisableDispatchCount() <= 1; + return kernel.GetCurrentEmuThread()->GetDisableDispatchCount() <= 1; } bool KScheduler::IsSchedulerUpdateNeeded(const KernelCore& kernel) { @@ -376,20 +376,30 @@ void KScheduler::ClearSchedulerUpdateNeeded(KernelCore& kernel) { } void KScheduler::DisableScheduling(KernelCore& kernel) { - if (auto* scheduler = kernel.CurrentScheduler(); scheduler) { - ASSERT(scheduler->GetCurrentThread()->GetDisableDispatchCount() >= 0); - scheduler->GetCurrentThread()->DisableDispatch(); + // If we are shutting down the kernel, none of this is relevant anymore. + if (kernel.IsShuttingDown()) { + return; } + + ASSERT(GetCurrentThreadPointer(kernel)->GetDisableDispatchCount() >= 0); + GetCurrentThreadPointer(kernel)->DisableDispatch(); } void KScheduler::EnableScheduling(KernelCore& kernel, u64 cores_needing_scheduling) { - if (auto* scheduler = kernel.CurrentScheduler(); scheduler) { - ASSERT(scheduler->GetCurrentThread()->GetDisableDispatchCount() >= 1); - if (scheduler->GetCurrentThread()->GetDisableDispatchCount() >= 1) { - scheduler->GetCurrentThread()->EnableDispatch(); - } + // If we are shutting down the kernel, none of this is relevant anymore. + if (kernel.IsShuttingDown()) { + return; + } + + auto* current_thread = GetCurrentThreadPointer(kernel); + + ASSERT(current_thread->GetDisableDispatchCount() >= 1); + + if (current_thread->GetDisableDispatchCount() > 1) { + current_thread->EnableDispatch(); + } else { + RescheduleCores(kernel, cores_needing_scheduling); } - RescheduleCores(kernel, cores_needing_scheduling); } u64 KScheduler::UpdateHighestPriorityThreads(KernelCore& kernel) { @@ -617,13 +627,17 @@ KScheduler::KScheduler(Core::System& system_, s32 core_id_) : system{system_}, c state.highest_priority_thread = nullptr; } -KScheduler::~KScheduler() { +void KScheduler::Finalize() { if (idle_thread) { idle_thread->Close(); idle_thread = nullptr; } } +KScheduler::~KScheduler() { + ASSERT(!idle_thread); +} + KThread* KScheduler::GetCurrentThread() const { if (auto result = current_thread.load(); result) { return result; @@ -642,10 +656,12 @@ void KScheduler::RescheduleCurrentCore() { if (phys_core.IsInterrupted()) { phys_core.ClearInterrupt(); } + guard.Lock(); if (state.needs_scheduling.load()) { Schedule(); } else { + GetCurrentThread()->EnableDispatch(); guard.Unlock(); } } @@ -655,26 +671,33 @@ void KScheduler::OnThreadStart() { } void KScheduler::Unload(KThread* thread) { + ASSERT(thread); + LOG_TRACE(Kernel, "core {}, unload thread {}", core_id, thread ? thread->GetName() : "nullptr"); - if (thread) { - if (thread->IsCallingSvc()) { - thread->ClearIsCallingSvc(); - } - if (!thread->IsTerminationRequested()) { - prev_thread = thread; - - Core::ARM_Interface& cpu_core = system.ArmInterface(core_id); - cpu_core.SaveContext(thread->GetContext32()); - cpu_core.SaveContext(thread->GetContext64()); - // Save the TPIDR_EL0 system register in case it was modified. - thread->SetTPIDR_EL0(cpu_core.GetTPIDR_EL0()); - cpu_core.ClearExclusiveState(); - } else { - prev_thread = nullptr; - } - thread->context_guard.Unlock(); + if (thread->IsCallingSvc()) { + thread->ClearIsCallingSvc(); + } + + auto& physical_core = system.Kernel().PhysicalCore(core_id); + if (!physical_core.IsInitialized()) { + return; + } + + Core::ARM_Interface& cpu_core = physical_core.ArmInterface(); + cpu_core.SaveContext(thread->GetContext32()); + cpu_core.SaveContext(thread->GetContext64()); + // Save the TPIDR_EL0 system register in case it was modified. + thread->SetTPIDR_EL0(cpu_core.GetTPIDR_EL0()); + cpu_core.ClearExclusiveState(); + + if (!thread->IsTerminationRequested() && thread->GetActiveCore() == core_id) { + prev_thread = thread; + } else { + prev_thread = nullptr; } + + thread->context_guard.Unlock(); } void KScheduler::Reload(KThread* thread) { @@ -683,11 +706,6 @@ void KScheduler::Reload(KThread* thread) { if (thread) { ASSERT_MSG(thread->GetState() == ThreadState::Runnable, "Thread must be runnable."); - auto* const thread_owner_process = thread->GetOwnerProcess(); - if (thread_owner_process != nullptr) { - system.Kernel().MakeCurrentProcess(thread_owner_process); - } - Core::ARM_Interface& cpu_core = system.ArmInterface(core_id); cpu_core.LoadContext(thread->GetContext32()); cpu_core.LoadContext(thread->GetContext64()); @@ -705,7 +723,7 @@ void KScheduler::SwitchContextStep2() { } void KScheduler::ScheduleImpl() { - KThread* previous_thread = current_thread.load(); + KThread* previous_thread = GetCurrentThread(); KThread* next_thread = state.highest_priority_thread; state.needs_scheduling = false; @@ -717,10 +735,15 @@ void KScheduler::ScheduleImpl() { // If we're not actually switching thread, there's nothing to do. if (next_thread == current_thread.load()) { + previous_thread->EnableDispatch(); guard.Unlock(); return; } + if (next_thread->GetCurrentCore() != core_id) { + next_thread->SetCurrentCore(core_id); + } + current_thread.store(next_thread); KProcess* const previous_process = system.Kernel().CurrentProcess(); @@ -731,11 +754,7 @@ void KScheduler::ScheduleImpl() { Unload(previous_thread); std::shared_ptr<Common::Fiber>* old_context; - if (previous_thread != nullptr) { - old_context = &previous_thread->GetHostContext(); - } else { - old_context = &idle_thread->GetHostContext(); - } + old_context = &previous_thread->GetHostContext(); guard.Unlock(); Common::Fiber::YieldTo(*old_context, *switch_fiber); diff --git a/src/core/hle/kernel/k_scheduler.h b/src/core/hle/kernel/k_scheduler.h index 7df288438..82fcd99e7 100644 --- a/src/core/hle/kernel/k_scheduler.h +++ b/src/core/hle/kernel/k_scheduler.h @@ -33,6 +33,8 @@ public: explicit KScheduler(Core::System& system_, s32 core_id_); ~KScheduler(); + void Finalize(); + /// Reschedules to the next available thread (call after current thread is suspended) void RescheduleCurrentCore(); diff --git a/src/core/hle/kernel/k_scheduler_lock.h b/src/core/hle/kernel/k_scheduler_lock.h index c571f2992..93c47f1b1 100644 --- a/src/core/hle/kernel/k_scheduler_lock.h +++ b/src/core/hle/kernel/k_scheduler_lock.h @@ -23,6 +23,11 @@ public: } void Lock() { + // If we are shutting down the kernel, none of this is relevant anymore. + if (kernel.IsShuttingDown()) { + return; + } + if (IsLockedByCurrentThread()) { // If we already own the lock, we can just increment the count. ASSERT(lock_count > 0); @@ -43,6 +48,11 @@ public: } void Unlock() { + // If we are shutting down the kernel, none of this is relevant anymore. + if (kernel.IsShuttingDown()) { + return; + } + ASSERT(IsLockedByCurrentThread()); ASSERT(lock_count > 0); diff --git a/src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h b/src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h index 61dc2858f..2995c492d 100644 --- a/src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h +++ b/src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h @@ -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" diff --git a/src/core/hle/kernel/k_server_session.cpp b/src/core/hle/kernel/k_server_session.cpp index 2bd53ccbd..d4e4a6b06 100644 --- a/src/core/hle/kernel/k_server_session.cpp +++ b/src/core/hle/kernel/k_server_session.cpp @@ -175,8 +175,7 @@ ResultCode KServerSession::CompleteSyncRequest(HLERequestContext& context) { { KScopedSchedulerLock lock(kernel); if (!context.IsThreadWaiting()) { - context.GetThread().Wakeup(); - context.GetThread().SetSyncedObject(nullptr, result); + context.GetThread().EndWait(result); } } diff --git a/src/core/hle/kernel/k_synchronization_object.cpp b/src/core/hle/kernel/k_synchronization_object.cpp index f168b4f21..e4c5eb74f 100644 --- a/src/core/hle/kernel/k_synchronization_object.cpp +++ b/src/core/hle/kernel/k_synchronization_object.cpp @@ -8,11 +8,66 @@ #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 { +public: + ThreadQueueImplForKSynchronizationObjectWait(KernelCore& kernel_, KSynchronizationObject** o, + KSynchronizationObject::ThreadListNode* n, s32 c) + : KThreadQueueWithoutEndWait(kernel_), m_objects(o), m_nodes(n), m_count(c) {} + + 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); + } + + 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); + } + +private: + KSynchronizationObject** m_objects; + KSynchronizationObject::ThreadListNode* m_nodes; + s32 m_count; +}; + +} // namespace + void KSynchronizationObject::Finalize() { this->OnFinalizeSynchronizationObject(); KAutoObject::Finalize(); @@ -25,11 +80,19 @@ 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 +111,6 @@ 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 +123,25 @@ 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); - thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Synchronization); - } - // The lock/sleep is done, so we should be able to get our result. + // Clear the thread's synced index. + thread->SetSyncedIndex(-1); - // Thread is no longer cancellable. - thread->ClearCancellable(); - - // For debugging only - thread->SetWaitObjectsForDebugging({}); + // Wait for an object to be signaled. + thread->BeginWait(std::addressof(wait_queue)); + thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Synchronization); + } - // 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 +150,7 @@ 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 +159,7 @@ 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); } } diff --git a/src/core/hle/kernel/k_synchronization_object.h b/src/core/hle/kernel/k_synchronization_object.h index 898e58e16..ec235437b 100644 --- a/src/core/hle/kernel/k_synchronization_object.h +++ b/src/core/hle/kernel/k_synchronization_object.h @@ -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; diff --git a/src/core/hle/kernel/k_thread.cpp b/src/core/hle/kernel/k_thread.cpp index db65ce79a..752592e2e 100644 --- a/src/core/hle/kernel/k_thread.cpp +++ b/src/core/hle/kernel/k_thread.cpp @@ -13,6 +13,9 @@ #include "common/common_types.h" #include "common/fiber.h" #include "common/logging/log.h" +#include "common/scope_exit.h" +#include "common/settings.h" +#include "common/thread_queue_list.h" #include "core/core.h" #include "core/cpu_manager.h" #include "core/hardware_properties.h" @@ -56,6 +59,34 @@ static void ResetThreadContext64(Core::ARM_Interface::ThreadContext64& context, namespace Kernel { +namespace { + +class ThreadQueueImplForKThreadSleep final : public KThreadQueueWithoutEndWait { +public: + explicit ThreadQueueImplForKThreadSleep(KernelCore& kernel_) + : KThreadQueueWithoutEndWait(kernel_) {} +}; + +class ThreadQueueImplForKThreadSetProperty final : public KThreadQueue { +public: + explicit ThreadQueueImplForKThreadSetProperty(KernelCore& kernel_, KThread::WaiterList* wl) + : KThreadQueue(kernel_), m_wait_list(wl) {} + + void CancelWait(KThread* waiting_thread, ResultCode wait_result, + bool cancel_timer_task) override { + // Remove the thread from the wait list. + m_wait_list->erase(m_wait_list->iterator_to(*waiting_thread)); + + // Invoke the base cancel wait handler. + KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task); + } + +private: + KThread::WaiterList* m_wait_list; +}; + +} // namespace + KThread::KThread(KernelCore& kernel_) : KAutoObjectWithSlabHeapAndContainer{kernel_}, activity_pause_lock{kernel_} {} KThread::~KThread() = default; @@ -82,6 +113,8 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s [[fallthrough]]; case ThreadType::HighPriority: [[fallthrough]]; + case ThreadType::Dummy: + [[fallthrough]]; case ThreadType::User: ASSERT(((owner == nullptr) || (owner->GetCoreMask() | (1ULL << virt_core)) == owner->GetCoreMask())); @@ -127,11 +160,8 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s priority = prio; base_priority = prio; - // Set sync object and waiting lock to null. - synced_object = nullptr; - // Initialize sleeping queue. - sleeping_queue = nullptr; + wait_queue = nullptr; // Set suspend flags. suspend_request_flags = 0; @@ -184,7 +214,7 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s // Setup the stack parameters. StackParameters& sp = GetStackParameters(); sp.cur_thread = this; - sp.disable_count = 1; + sp.disable_count = 0; SetInExceptionHandler(); // Set thread ID. @@ -211,15 +241,16 @@ ResultCode KThread::InitializeThread(KThread* thread, KThreadFunction func, uint // Initialize the thread. R_TRY(thread->Initialize(func, arg, user_stack_top, prio, core, owner, type)); - // Initialize host context. + // Initialize emulation parameters. thread->host_context = std::make_shared<Common::Fiber>(std::move(init_func), init_func_parameter); + thread->is_single_core = !Settings::values.use_multi_core.GetValue(); return ResultSuccess; } ResultCode KThread::InitializeDummyThread(KThread* thread) { - return thread->Initialize({}, {}, {}, DefaultThreadPriority, 3, {}, ThreadType::Main); + return thread->Initialize({}, {}, {}, DefaultThreadPriority, 3, {}, ThreadType::Dummy); } ResultCode KThread::InitializeIdleThread(Core::System& system, KThread* thread, s32 virt_core) { @@ -273,11 +304,14 @@ void KThread::Finalize() { auto it = waiter_list.begin(); while (it != waiter_list.end()) { - // The thread shouldn't be a kernel waiter. + // Clear the lock owner it->SetLockOwner(nullptr); - it->SetSyncedObject(nullptr, ResultInvalidState); - it->Wakeup(); + + // Erase the waiter from our list. it = waiter_list.erase(it); + + // Cancel the thread's wait. + it->CancelWait(ResultInvalidState, true); } } @@ -294,15 +328,12 @@ bool KThread::IsSignaled() const { return signaled; } -void KThread::Wakeup() { - KScopedSchedulerLock sl{kernel}; +void KThread::OnTimer() { + ASSERT(kernel.GlobalSchedulerContext().IsLocked()); + // If we're waiting, cancel the wait. if (GetState() == ThreadState::Waiting) { - if (sleeping_queue != nullptr) { - sleeping_queue->WakeupThread(this); - } else { - SetState(ThreadState::Runnable); - } + wait_queue->CancelWait(this, ResultTimedOut, false); } } @@ -327,7 +358,7 @@ void KThread::StartTermination() { // Signal. signaled = true; - NotifyAvailable(); + KSynchronizationObject::NotifyAvailable(); // Clear previous thread in KScheduler. KScheduler::ClearPreviousThread(kernel, this); @@ -475,30 +506,32 @@ ResultCode KThread::GetPhysicalCoreMask(s32* out_ideal_core, u64* out_affinity_m return ResultSuccess; } -ResultCode KThread::SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask) { +ResultCode KThread::SetCoreMask(s32 core_id_, u64 v_affinity_mask) { ASSERT(parent != nullptr); ASSERT(v_affinity_mask != 0); - KScopedLightLock lk{activity_pause_lock}; + KScopedLightLock lk(activity_pause_lock); // Set the core mask. u64 p_affinity_mask = 0; { - KScopedSchedulerLock sl{kernel}; + KScopedSchedulerLock sl(kernel); ASSERT(num_core_migration_disables >= 0); - // If the core id is no-update magic, preserve the ideal core id. - if (cpu_core_id == Svc::IdealCoreNoUpdate) { - cpu_core_id = virtual_ideal_core_id; - R_UNLESS(((1ULL << cpu_core_id) & v_affinity_mask) != 0, ResultInvalidCombination); + // If we're updating, set our ideal virtual core. + if (core_id_ != Svc::IdealCoreNoUpdate) { + virtual_ideal_core_id = core_id_; + } else { + // Preserve our ideal core id. + core_id_ = virtual_ideal_core_id; + R_UNLESS(((1ULL << core_id_) & v_affinity_mask) != 0, ResultInvalidCombination); } - // Set the virtual core/affinity mask. - virtual_ideal_core_id = cpu_core_id; + // Set our affinity mask. virtual_affinity_mask = v_affinity_mask; // Translate the virtual core to a physical core. - if (cpu_core_id >= 0) { - cpu_core_id = Core::Hardware::VirtualToPhysicalCoreMap[cpu_core_id]; + if (core_id_ >= 0) { + core_id_ = Core::Hardware::VirtualToPhysicalCoreMap[core_id_]; } // Translate the virtual affinity mask to a physical one. @@ -513,7 +546,7 @@ ResultCode KThread::SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask) { const KAffinityMask old_mask = physical_affinity_mask; // Set our new ideals. - physical_ideal_core_id = cpu_core_id; + physical_ideal_core_id = core_id_; physical_affinity_mask.SetAffinityMask(p_affinity_mask); if (physical_affinity_mask.GetAffinityMask() != old_mask.GetAffinityMask()) { @@ -531,18 +564,18 @@ ResultCode KThread::SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask) { } } else { // Otherwise, we edit the original affinity for restoration later. - original_physical_ideal_core_id = cpu_core_id; + original_physical_ideal_core_id = core_id_; original_physical_affinity_mask.SetAffinityMask(p_affinity_mask); } } // Update the pinned waiter list. + ThreadQueueImplForKThreadSetProperty wait_queue_(kernel, std::addressof(pinned_waiter_list)); { bool retry_update{}; - bool thread_is_pinned{}; do { // Lock the scheduler. - KScopedSchedulerLock sl{kernel}; + KScopedSchedulerLock sl(kernel); // Don't do any further management if our termination has been requested. R_SUCCEED_IF(IsTerminationRequested()); @@ -570,12 +603,9 @@ ResultCode KThread::SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask) { R_UNLESS(!GetCurrentThread(kernel).IsTerminationRequested(), ResultTerminationRequested); - // Note that the thread was pinned. - thread_is_pinned = true; - // Wait until the thread isn't pinned any more. pinned_waiter_list.push_back(GetCurrentThread(kernel)); - GetCurrentThread(kernel).SetState(ThreadState::Waiting); + GetCurrentThread(kernel).BeginWait(std::addressof(wait_queue_)); } else { // If the thread isn't pinned, release the scheduler lock and retry until it's // not current. @@ -583,16 +613,6 @@ ResultCode KThread::SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask) { } } } while (retry_update); - - // If the thread was pinned, it no longer is, and we should remove the current thread from - // our waiter list. - if (thread_is_pinned) { - // Lock the scheduler. - KScopedSchedulerLock sl{kernel}; - - // Remove from the list. - pinned_waiter_list.erase(pinned_waiter_list.iterator_to(GetCurrentThread(kernel))); - } } return ResultSuccess; @@ -641,15 +661,9 @@ void KThread::WaitCancel() { KScopedSchedulerLock sl{kernel}; // Check if we're waiting and cancellable. - if (GetState() == ThreadState::Waiting && cancellable) { - if (sleeping_queue != nullptr) { - sleeping_queue->WakeupThread(this); - wait_cancelled = true; - } else { - SetSyncedObject(nullptr, ResultCancelled); - SetState(ThreadState::Runnable); - wait_cancelled = false; - } + if (this->GetState() == ThreadState::Waiting && cancellable) { + wait_cancelled = false; + wait_queue->CancelWait(this, ResultCancelled, true); } else { // Otherwise, note that we cancelled a wait. wait_cancelled = true; @@ -700,60 +714,59 @@ ResultCode KThread::SetActivity(Svc::ThreadActivity activity) { // Set the activity. { // Lock the scheduler. - KScopedSchedulerLock sl{kernel}; + KScopedSchedulerLock sl(kernel); // Verify our state. - const auto cur_state = GetState(); + const auto cur_state = this->GetState(); R_UNLESS((cur_state == ThreadState::Waiting || cur_state == ThreadState::Runnable), ResultInvalidState); // Either pause or resume. if (activity == Svc::ThreadActivity::Paused) { // Verify that we're not suspended. - R_UNLESS(!IsSuspendRequested(SuspendType::Thread), ResultInvalidState); + R_UNLESS(!this->IsSuspendRequested(SuspendType::Thread), ResultInvalidState); // Suspend. - RequestSuspend(SuspendType::Thread); + this->RequestSuspend(SuspendType::Thread); } else { ASSERT(activity == Svc::ThreadActivity::Runnable); // Verify that we're suspended. - R_UNLESS(IsSuspendRequested(SuspendType::Thread), ResultInvalidState); + R_UNLESS(this->IsSuspendRequested(SuspendType::Thread), ResultInvalidState); // Resume. - Resume(SuspendType::Thread); + this->Resume(SuspendType::Thread); } } // If the thread is now paused, update the pinned waiter list. if (activity == Svc::ThreadActivity::Paused) { - bool thread_is_pinned{}; - bool thread_is_current{}; + ThreadQueueImplForKThreadSetProperty wait_queue_(kernel, + std::addressof(pinned_waiter_list)); + + bool thread_is_current; do { // Lock the scheduler. - KScopedSchedulerLock sl{kernel}; + KScopedSchedulerLock sl(kernel); // Don't do any further management if our termination has been requested. - R_SUCCEED_IF(IsTerminationRequested()); + R_SUCCEED_IF(this->IsTerminationRequested()); + + // By default, treat the thread as not current. + thread_is_current = false; // Check whether the thread is pinned. - if (GetStackParameters().is_pinned) { + if (this->GetStackParameters().is_pinned) { // Verify that the current thread isn't terminating. R_UNLESS(!GetCurrentThread(kernel).IsTerminationRequested(), ResultTerminationRequested); - // Note that the thread was pinned and not current. - thread_is_pinned = true; - thread_is_current = false; - // Wait until the thread isn't pinned any more. pinned_waiter_list.push_back(GetCurrentThread(kernel)); - GetCurrentThread(kernel).SetState(ThreadState::Waiting); + GetCurrentThread(kernel).BeginWait(std::addressof(wait_queue_)); } else { // Check if the thread is currently running. // If it is, we'll need to retry. - thread_is_current = false; - for (auto i = 0; i < static_cast<s32>(Core::Hardware::NUM_CPU_CORES); ++i) { if (kernel.Scheduler(i).GetCurrentThread() == this) { thread_is_current = true; @@ -762,16 +775,6 @@ ResultCode KThread::SetActivity(Svc::ThreadActivity activity) { } } } while (thread_is_current); - - // If the thread was pinned, it no longer is, and we should remove the current thread from - // our waiter list. - if (thread_is_pinned) { - // Lock the scheduler. - KScopedSchedulerLock sl{kernel}; - - // Remove from the list. - pinned_waiter_list.erase(pinned_waiter_list.iterator_to(GetCurrentThread(kernel))); - } } return ResultSuccess; @@ -966,6 +969,9 @@ ResultCode KThread::Run() { // Set our state and finish. SetState(ThreadState::Runnable); + + DisableDispatch(); + return ResultSuccess; } } @@ -996,27 +1002,61 @@ ResultCode KThread::Sleep(s64 timeout) { ASSERT(this == GetCurrentThreadPointer(kernel)); ASSERT(timeout > 0); + ThreadQueueImplForKThreadSleep wait_queue_(kernel); { // Setup the scheduling lock and sleep. - KScopedSchedulerLockAndSleep slp{kernel, this, timeout}; + KScopedSchedulerLockAndSleep slp(kernel, this, timeout); // Check if the thread should terminate. - if (IsTerminationRequested()) { + if (this->IsTerminationRequested()) { slp.CancelSleep(); return ResultTerminationRequested; } - // Mark the thread as waiting. - SetState(ThreadState::Waiting); + // Wait for the sleep to end. + this->BeginWait(std::addressof(wait_queue_)); SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Sleep); } - // The lock/sleep is done. + return ResultSuccess; +} - // Cancel the timer. - kernel.TimeManager().UnscheduleTimeEvent(this); +void KThread::BeginWait(KThreadQueue* queue) { + // Set our state as waiting. + SetState(ThreadState::Waiting); - return ResultSuccess; + // Set our wait queue. + wait_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) { + wait_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) { + wait_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) { + wait_queue->CancelWait(this, wait_result_, cancel_timer_task); + } } void KThread::SetState(ThreadState state) { @@ -1050,4 +1090,26 @@ s32 GetCurrentCoreId(KernelCore& kernel) { return GetCurrentThread(kernel).GetCurrentCore(); } +KScopedDisableDispatch::~KScopedDisableDispatch() { + // If we are shutting down the kernel, none of this is relevant anymore. + if (kernel.IsShuttingDown()) { + return; + } + + // Skip the reschedule if single-core, as dispatch tracking is disabled here. + if (!Settings::values.use_multi_core.GetValue()) { + return; + } + + if (GetCurrentThread(kernel).GetDisableDispatchCount() <= 1) { + auto scheduler = kernel.CurrentScheduler(); + + if (scheduler) { + scheduler->RescheduleCurrentCore(); + } + } else { + GetCurrentThread(kernel).EnableDispatch(); + } +} + } // namespace Kernel diff --git a/src/core/hle/kernel/k_thread.h b/src/core/hle/kernel/k_thread.h index c77f44ad4..c8a08bd71 100644 --- a/src/core/hle/kernel/k_thread.h +++ b/src/core/hle/kernel/k_thread.h @@ -48,6 +48,7 @@ enum class ThreadType : u32 { Kernel = 1, HighPriority = 2, User = 3, + Dummy = 100, // Special thread type for emulation purposes only }; DECLARE_ENUM_FLAG_OPERATORS(ThreadType); @@ -161,8 +162,6 @@ public: } } - void Wakeup(); - void SetBasePriority(s32 value); [[nodiscard]] ResultCode Run(); @@ -197,13 +196,19 @@ public: void Suspend(); - void SetSyncedObject(KSynchronizationObject* obj, ResultCode wait_res) { - synced_object = obj; + constexpr void SetSyncedIndex(s32 index) { + synced_index = index; + } + + [[nodiscard]] constexpr s32 GetSyncedIndex() const { + return synced_index; + } + + constexpr void SetWaitResult(ResultCode wait_res) { wait_result = wait_res; } - [[nodiscard]] ResultCode GetWaitResult(KSynchronizationObject** out) const { - *out = synced_object; + [[nodiscard]] constexpr ResultCode GetWaitResult() const { return wait_result; } @@ -374,6 +379,8 @@ public: [[nodiscard]] bool IsSignaled() const override; + void OnTimer(); + static void PostDestroy(uintptr_t arg); [[nodiscard]] static ResultCode InitializeDummyThread(KThread* thread); @@ -446,20 +453,39 @@ public: return per_core_priority_queue_entry[core]; } - void SetSleepingQueue(KThreadQueue* q) { - sleeping_queue = q; + [[nodiscard]] bool IsKernelThread() const { + return GetActiveCore() == 3; + } + + [[nodiscard]] bool IsDispatchTrackingDisabled() const { + return is_single_core || IsKernelThread(); } [[nodiscard]] s32 GetDisableDispatchCount() const { + if (IsDispatchTrackingDisabled()) { + // TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch. + return 1; + } + return this->GetStackParameters().disable_count; } void DisableDispatch() { + if (IsDispatchTrackingDisabled()) { + // TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch. + return; + } + ASSERT(GetCurrentThread(kernel).GetDisableDispatchCount() >= 0); this->GetStackParameters().disable_count++; } void EnableDispatch() { + if (IsDispatchTrackingDisabled()) { + // TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch. + return; + } + ASSERT(GetCurrentThread(kernel).GetDisableDispatchCount() > 0); this->GetStackParameters().disable_count--; } @@ -573,6 +599,15 @@ public: address_key_value = val; } + void ClearWaitQueue() { + wait_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(); } @@ -667,7 +702,6 @@ private: KAffinityMask physical_affinity_mask{}; u64 thread_id{}; std::atomic<s64> cpu_time{}; - KSynchronizationObject* synced_object{}; VAddr address_key{}; KProcess* parent{}; VAddr kernel_stack_top{}; @@ -677,13 +711,14 @@ private: s64 schedule_count{}; s64 last_scheduled_tick{}; std::array<QueueEntry, Core::Hardware::NUM_CPU_CORES> per_core_priority_queue_entry{}; - KThreadQueue* sleeping_queue{}; + KThreadQueue* wait_queue{}; WaiterList waiter_list{}; WaiterList pinned_waiter_list{}; KThread* lock_owner{}; 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{}; @@ -708,6 +743,7 @@ private: // For emulation std::shared_ptr<Common::Fiber> host_context{}; + bool is_single_core{}; // For debugging std::vector<KSynchronizationObject*> wait_objects_for_debugging; @@ -752,4 +788,20 @@ public: } }; +class KScopedDisableDispatch { +public: + [[nodiscard]] explicit KScopedDisableDispatch(KernelCore& kernel_) : kernel{kernel_} { + // If we are shutting down the kernel, none of this is relevant anymore. + if (kernel.IsShuttingDown()) { + return; + } + GetCurrentThread(kernel).DisableDispatch(); + } + + ~KScopedDisableDispatch(); + +private: + KernelCore& kernel; +}; + } // namespace Kernel diff --git a/src/core/hle/kernel/k_thread_queue.cpp b/src/core/hle/kernel/k_thread_queue.cpp new file mode 100644 index 000000000..46f27172b --- /dev/null +++ b/src/core/hle/kernel/k_thread_queue.cpp @@ -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 diff --git a/src/core/hle/kernel/k_thread_queue.h b/src/core/hle/kernel/k_thread_queue.h index 35d471dc5..ccb718e49 100644 --- a/src/core/hle/kernel/k_thread_queue.h +++ b/src/core/hle/kernel/k_thread_queue.h @@ -4,6 +4,7 @@ #pragma once +#include "core/hle/kernel/k_scheduler.h" #include "core/hle/kernel/k_thread.h" namespace Kernel { @@ -11,71 +12,24 @@ namespace Kernel { class KThreadQueue { public: explicit KThreadQueue(KernelCore& kernel_) : kernel{kernel_} {} + virtual ~KThreadQueue() = default; - bool IsEmpty() const { - return wait_list.empty(); - } - - KThread::WaiterList::iterator begin() { - return wait_list.begin(); - } - KThread::WaiterList::iterator end() { - return wait_list.end(); - } - - bool SleepThread(KThread* t) { - KScopedSchedulerLock sl{kernel}; - - // If the thread needs terminating, don't enqueue it. - if (t->IsTerminationRequested()) { - return false; - } - - // Set the thread's queue and mark it as waiting. - t->SetSleepingQueue(this); - t->SetState(ThreadState::Waiting); - - // Add the thread to the queue. - wait_list.push_back(*t); - - return true; - } - - void WakeupThread(KThread* t) { - KScopedSchedulerLock sl{kernel}; - - // Remove the thread from the queue. - wait_list.erase(wait_list.iterator_to(*t)); - - // Mark the thread as no longer sleeping. - t->SetState(ThreadState::Runnable); - t->SetSleepingQueue(nullptr); - } - - KThread* WakeupFrontThread() { - KScopedSchedulerLock sl{kernel}; - - if (wait_list.empty()) { - return nullptr; - } else { - // Remove the thread from the queue. - auto it = wait_list.begin(); - KThread* thread = std::addressof(*it); - wait_list.erase(it); - - ASSERT(thread->GetState() == ThreadState::Waiting); - - // Mark the thread as no longer sleeping. - thread->SetState(ThreadState::Runnable); - thread->SetSleepingQueue(nullptr); - - return thread; - } - } + 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); private: KernelCore& kernel; KThread::WaiterList wait_list{}; }; +class KThreadQueueWithoutEndWait : public KThreadQueue { +public: + explicit KThreadQueueWithoutEndWait(KernelCore& kernel_) : KThreadQueue(kernel_) {} + + void EndWait(KThread* waiting_thread, ResultCode wait_result) override final; +}; + } // namespace Kernel diff --git a/src/core/hle/kernel/kernel.cpp b/src/core/hle/kernel/kernel.cpp index 45e86a677..2e4e4cb1c 100644 --- a/src/core/hle/kernel/kernel.cpp +++ b/src/core/hle/kernel/kernel.cpp @@ -14,6 +14,7 @@ #include "common/assert.h" #include "common/logging/log.h" #include "common/microprofile.h" +#include "common/scope_exit.h" #include "common/thread.h" #include "common/thread_worker.h" #include "core/arm/arm_interface.h" @@ -83,12 +84,16 @@ struct KernelCore::Impl { } void InitializeCores() { - for (auto& core : cores) { - core.Initialize(current_process->Is64BitProcess()); + for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) { + cores[core_id].Initialize(current_process->Is64BitProcess()); + system.Memory().SetCurrentPageTable(*current_process, core_id); } } void Shutdown() { + is_shutting_down.store(true, std::memory_order_relaxed); + SCOPE_EXIT({ is_shutting_down.store(false, std::memory_order_relaxed); }); + process_list.clear(); // Close all open server ports. @@ -123,15 +128,6 @@ struct KernelCore::Impl { next_user_process_id = KProcess::ProcessIDMin; next_thread_id = 1; - for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) { - if (suspend_threads[core_id]) { - suspend_threads[core_id]->Close(); - suspend_threads[core_id] = nullptr; - } - - schedulers[core_id].reset(); - } - cores.clear(); global_handle_table->Finalize(); @@ -159,6 +155,16 @@ struct KernelCore::Impl { CleanupObject(time_shared_mem); CleanupObject(system_resource_limit); + for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) { + if (suspend_threads[core_id]) { + suspend_threads[core_id]->Close(); + suspend_threads[core_id] = nullptr; + } + + schedulers[core_id]->Finalize(); + schedulers[core_id].reset(); + } + // Next host thead ID to use, 0-3 IDs represent core threads, >3 represent others next_host_thread_id = Core::Hardware::NUM_CPU_CORES; @@ -245,13 +251,11 @@ struct KernelCore::Impl { KScopedSchedulerLock lock(kernel); global_scheduler_context->PreemptThreads(); } - const auto time_interval = std::chrono::nanoseconds{ - Core::Timing::msToCycles(std::chrono::milliseconds(10))}; + const auto time_interval = std::chrono::nanoseconds{std::chrono::milliseconds(10)}; system.CoreTiming().ScheduleEvent(time_interval, preemption_event); }); - const auto time_interval = - std::chrono::nanoseconds{Core::Timing::msToCycles(std::chrono::milliseconds(10))}; + const auto time_interval = std::chrono::nanoseconds{std::chrono::milliseconds(10)}; system.CoreTiming().ScheduleEvent(time_interval, preemption_event); } @@ -267,14 +271,6 @@ struct KernelCore::Impl { void MakeCurrentProcess(KProcess* process) { current_process = process; - if (process == nullptr) { - return; - } - - const u32 core_id = GetCurrentHostThreadID(); - if (core_id < Core::Hardware::NUM_CPU_CORES) { - system.Memory().SetCurrentPageTable(*process, core_id); - } } static inline thread_local u32 host_thread_id = UINT32_MAX; @@ -344,7 +340,16 @@ struct KernelCore::Impl { is_phantom_mode_for_singlecore = value; } + bool IsShuttingDown() const { + return is_shutting_down.load(std::memory_order_relaxed); + } + KThread* GetCurrentEmuThread() { + // If we are shutting down the kernel, none of this is relevant anymore. + if (IsShuttingDown()) { + return {}; + } + const auto thread_id = GetCurrentHostThreadID(); if (thread_id >= Core::Hardware::NUM_CPU_CORES) { return GetHostDummyThread(); @@ -760,6 +765,7 @@ struct KernelCore::Impl { std::vector<std::unique_ptr<KThread>> dummy_threads; bool is_multicore{}; + std::atomic_bool is_shutting_down{}; bool is_phantom_mode_for_singlecore{}; u32 single_core_thread_id{}; @@ -845,16 +851,20 @@ const Kernel::PhysicalCore& KernelCore::PhysicalCore(std::size_t id) const { return impl->cores[id]; } +size_t KernelCore::CurrentPhysicalCoreIndex() const { + const u32 core_id = impl->GetCurrentHostThreadID(); + if (core_id >= Core::Hardware::NUM_CPU_CORES) { + return Core::Hardware::NUM_CPU_CORES - 1; + } + return core_id; +} + Kernel::PhysicalCore& KernelCore::CurrentPhysicalCore() { - u32 core_id = impl->GetCurrentHostThreadID(); - ASSERT(core_id < Core::Hardware::NUM_CPU_CORES); - return impl->cores[core_id]; + return impl->cores[CurrentPhysicalCoreIndex()]; } const Kernel::PhysicalCore& KernelCore::CurrentPhysicalCore() const { - u32 core_id = impl->GetCurrentHostThreadID(); - ASSERT(core_id < Core::Hardware::NUM_CPU_CORES); - return impl->cores[core_id]; + return impl->cores[CurrentPhysicalCoreIndex()]; } Kernel::KScheduler* KernelCore::CurrentScheduler() { @@ -1057,6 +1067,9 @@ void KernelCore::Suspend(bool in_suspention) { impl->suspend_threads[core_id]->SetState(state); impl->suspend_threads[core_id]->SetWaitReasonForDebugging( ThreadWaitReasonForDebugging::Suspended); + if (!should_suspend) { + impl->suspend_threads[core_id]->DisableDispatch(); + } } } } @@ -1065,19 +1078,21 @@ bool KernelCore::IsMulticore() const { return impl->is_multicore; } +bool KernelCore::IsShuttingDown() const { + return impl->IsShuttingDown(); +} + void KernelCore::ExceptionalExit() { exception_exited = true; Suspend(true); } void KernelCore::EnterSVCProfile() { - std::size_t core = impl->GetCurrentHostThreadID(); - impl->svc_ticks[core] = MicroProfileEnter(MICROPROFILE_TOKEN(Kernel_SVC)); + impl->svc_ticks[CurrentPhysicalCoreIndex()] = MicroProfileEnter(MICROPROFILE_TOKEN(Kernel_SVC)); } void KernelCore::ExitSVCProfile() { - std::size_t core = impl->GetCurrentHostThreadID(); - MicroProfileLeave(MICROPROFILE_TOKEN(Kernel_SVC), impl->svc_ticks[core]); + MicroProfileLeave(MICROPROFILE_TOKEN(Kernel_SVC), impl->svc_ticks[CurrentPhysicalCoreIndex()]); } std::weak_ptr<Kernel::ServiceThread> KernelCore::CreateServiceThread(const std::string& name) { diff --git a/src/core/hle/kernel/kernel.h b/src/core/hle/kernel/kernel.h index d847fd0c5..b9b423908 100644 --- a/src/core/hle/kernel/kernel.h +++ b/src/core/hle/kernel/kernel.h @@ -149,6 +149,9 @@ public: /// Gets the an instance of the respective physical CPU core. const Kernel::PhysicalCore& PhysicalCore(std::size_t id) const; + /// Gets the current physical core index for the running host thread. + std::size_t CurrentPhysicalCoreIndex() const; + /// Gets the sole instance of the Scheduler at the current running core. Kernel::KScheduler* CurrentScheduler(); @@ -272,6 +275,8 @@ public: bool IsMulticore() const; + bool IsShuttingDown() const; + void EnterSVCProfile(); void ExitSVCProfile(); diff --git a/src/core/hle/kernel/service_thread.cpp b/src/core/hle/kernel/service_thread.cpp index 6721b6276..03f3dec10 100644 --- a/src/core/hle/kernel/service_thread.cpp +++ b/src/core/hle/kernel/service_thread.cpp @@ -25,24 +25,27 @@ public: void QueueSyncRequest(KSession& session, std::shared_ptr<HLERequestContext>&& context); private: - std::vector<std::thread> threads; + std::vector<std::jthread> threads; std::queue<std::function<void()>> requests; std::mutex queue_mutex; - std::condition_variable condition; + std::condition_variable_any condition; const std::string service_name; - bool stop{}; }; ServiceThread::Impl::Impl(KernelCore& kernel, std::size_t num_threads, const std::string& name) : service_name{name} { - for (std::size_t i = 0; i < num_threads; ++i) - threads.emplace_back([this, &kernel] { + for (std::size_t i = 0; i < num_threads; ++i) { + threads.emplace_back([this, &kernel](std::stop_token stop_token) { Common::SetCurrentThreadName(std::string{"yuzu:HleService:" + service_name}.c_str()); // Wait for first request before trying to acquire a render context { std::unique_lock lock{queue_mutex}; - condition.wait(lock, [this] { return stop || !requests.empty(); }); + condition.wait(lock, stop_token, [this] { return !requests.empty(); }); + } + + if (stop_token.stop_requested()) { + return; } kernel.RegisterHostThread(); @@ -52,10 +55,16 @@ ServiceThread::Impl::Impl(KernelCore& kernel, std::size_t num_threads, const std { std::unique_lock lock{queue_mutex}; - condition.wait(lock, [this] { return stop || !requests.empty(); }); - if (stop || requests.empty()) { + condition.wait(lock, stop_token, [this] { return !requests.empty(); }); + + if (stop_token.stop_requested()) { return; } + + if (requests.empty()) { + continue; + } + task = std::move(requests.front()); requests.pop(); } @@ -63,6 +72,7 @@ ServiceThread::Impl::Impl(KernelCore& kernel, std::size_t num_threads, const std task(); } }); + } } void ServiceThread::Impl::QueueSyncRequest(KSession& session, @@ -88,12 +98,9 @@ void ServiceThread::Impl::QueueSyncRequest(KSession& session, } ServiceThread::Impl::~Impl() { - { - std::unique_lock lock{queue_mutex}; - stop = true; - } condition.notify_all(); - for (std::thread& thread : threads) { + for (auto& thread : threads) { + thread.request_stop(); thread.join(); } } diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index b37db918e..a9f7438ea 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -32,6 +32,7 @@ #include "core/hle/kernel/k_shared_memory.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/k_transfer_memory.h" #include "core/hle/kernel/k_writable_event.h" #include "core/hle/kernel/kernel.h" @@ -308,26 +309,29 @@ static ResultCode ConnectToNamedPort32(Core::System& system, Handle* out_handle, /// Makes a blocking IPC call to an OS service. static ResultCode SendSyncRequest(Core::System& system, Handle handle) { - auto& kernel = system.Kernel(); + // Create the wait queue. + KThreadQueue wait_queue(kernel); + + // Get the client session from its handle. + KScopedAutoObject session = + kernel.CurrentProcess()->GetHandleTable().GetObject<KClientSession>(handle); + R_UNLESS(session.IsNotNull(), ResultInvalidHandle); + + LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}({})", handle, session->GetName()); + auto thread = kernel.CurrentScheduler()->GetCurrentThread(); { KScopedSchedulerLock lock(kernel); - thread->SetState(ThreadState::Waiting); - thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::IPC); - - { - KScopedAutoObject session = - kernel.CurrentProcess()->GetHandleTable().GetObject<KClientSession>(handle); - R_UNLESS(session.IsNotNull(), ResultInvalidHandle); - LOG_TRACE(Kernel_SVC, "called handle=0x{:08X}({})", handle, session->GetName()); - session->SendSyncRequest(thread, system.Memory(), system.CoreTiming()); - } + + // This is a synchronous request, so we should wait for our request to complete. + GetCurrentThread(kernel).BeginWait(std::addressof(wait_queue)); + GetCurrentThread(kernel).SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::IPC); + session->SendSyncRequest(&GetCurrentThread(kernel), system.Memory(), system.CoreTiming()); } - KSynchronizationObject* dummy{}; - return thread->GetWaitResult(std::addressof(dummy)); + return thread->GetWaitResult(); } static ResultCode SendSyncRequest32(Core::System& system, Handle handle) { @@ -874,7 +878,7 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, Handle const u64 thread_ticks = current_thread->GetCpuTime(); out_ticks = thread_ticks + (core_timing.GetCPUTicks() - prev_ctx_ticks); - } else if (same_thread && info_sub_id == system.CurrentCoreIndex()) { + } else if (same_thread && info_sub_id == system.Kernel().CurrentPhysicalCoreIndex()) { out_ticks = core_timing.GetCPUTicks() - prev_ctx_ticks; } @@ -888,7 +892,8 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, Handle return ResultInvalidHandle; } - if (info_sub_id != 0xFFFFFFFFFFFFFFFF && info_sub_id != system.CurrentCoreIndex()) { + if (info_sub_id != 0xFFFFFFFFFFFFFFFF && + info_sub_id != system.Kernel().CurrentPhysicalCoreIndex()) { LOG_ERROR(Kernel_SVC, "Core is not the current core, got {}", info_sub_id); return ResultInvalidCombination; } diff --git a/src/core/hle/kernel/time_manager.cpp b/src/core/hle/kernel/time_manager.cpp index 8cd7279a3..aa985d820 100644 --- a/src/core/hle/kernel/time_manager.cpp +++ b/src/core/hle/kernel/time_manager.cpp @@ -5,6 +5,7 @@ #include "common/assert.h" #include "core/core.h" #include "core/core_timing.h" +#include "core/hle/kernel/k_scheduler.h" #include "core/hle/kernel/k_thread.h" #include "core/hle/kernel/time_manager.h" @@ -15,7 +16,10 @@ TimeManager::TimeManager(Core::System& system_) : system{system_} { Core::Timing::CreateEvent("Kernel::TimeManagerCallback", [this](std::uintptr_t thread_handle, std::chrono::nanoseconds) { KThread* thread = reinterpret_cast<KThread*>(thread_handle); - thread->Wakeup(); + { + KScopedSchedulerLock sl(system.Kernel()); + thread->OnTimer(); + } }); } |