From e31425df3877636c098ec7426ebd2067920715cb Mon Sep 17 00:00:00 2001 From: Fernando Sahmkow Date: Mon, 24 Feb 2020 22:04:12 -0400 Subject: General: Recover Prometheus project from harddrive failure This commit: Implements CPU Interrupts, Replaces Cycle Timing for Host Timing, Reworks the Kernel's Scheduler, Introduce Idle State and Suspended State, Recreates the bootmanager, Initializes Multicore system. --- src/core/cpu_manager.cpp | 194 +++++++++++++++++++++++++++++++++++++---------- 1 file changed, 153 insertions(+), 41 deletions(-) (limited to 'src/core/cpu_manager.cpp') diff --git a/src/core/cpu_manager.cpp b/src/core/cpu_manager.cpp index 70ddbdcca..494850992 100644 --- a/src/core/cpu_manager.cpp +++ b/src/core/cpu_manager.cpp @@ -2,80 +2,192 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. +#include "common/fiber.h" +#include "common/thread.h" #include "core/arm/exclusive_monitor.h" #include "core/core.h" -#include "core/core_manager.h" #include "core/core_timing.h" #include "core/cpu_manager.h" #include "core/gdbstub/gdbstub.h" +#include "core/hle/kernel/kernel.h" +#include "core/hle/kernel/physical_core.h" +#include "core/hle/kernel/scheduler.h" +#include "core/hle/kernel/thread.h" namespace Core { CpuManager::CpuManager(System& system) : system{system} {} CpuManager::~CpuManager() = default; +void CpuManager::ThreadStart(CpuManager& cpu_manager, std::size_t core) { + cpu_manager.RunThread(core); +} + void CpuManager::Initialize() { - for (std::size_t index = 0; index < core_managers.size(); ++index) { - core_managers[index] = std::make_unique(system, index); + running_mode = true; + for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) { + core_data[core].host_thread = + std::make_unique(ThreadStart, std::ref(*this), core); } } void CpuManager::Shutdown() { - for (auto& cpu_core : core_managers) { - cpu_core.reset(); + running_mode = false; + Pause(false); + for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) { + core_data[core].host_thread->join(); } } -CoreManager& CpuManager::GetCoreManager(std::size_t index) { - return *core_managers.at(index); +void CpuManager::GuestThreadFunction(void* cpu_manager_) { + CpuManager* cpu_manager = static_cast(cpu_manager_); + cpu_manager->RunGuestThread(); } -const CoreManager& CpuManager::GetCoreManager(std::size_t index) const { - return *core_managers.at(index); +void CpuManager::IdleThreadFunction(void* cpu_manager_) { + CpuManager* cpu_manager = static_cast(cpu_manager_); + cpu_manager->RunIdleThread(); } -CoreManager& CpuManager::GetCurrentCoreManager() { - // Otherwise, use single-threaded mode active_core variable - return *core_managers[active_core]; +void CpuManager::SuspendThreadFunction(void* cpu_manager_) { + CpuManager* cpu_manager = static_cast(cpu_manager_); + cpu_manager->RunSuspendThread(); } -const CoreManager& CpuManager::GetCurrentCoreManager() const { - // Otherwise, use single-threaded mode active_core variable - return *core_managers[active_core]; +std::function CpuManager::GetGuestThreadStartFunc() { + return std::function(GuestThreadFunction); } -void CpuManager::RunLoop(bool tight_loop) { - if (GDBStub::IsServerEnabled()) { - GDBStub::HandlePacket(); - - // If the loop is halted and we want to step, use a tiny (1) number of instructions to - // execute. Otherwise, get out of the loop function. - if (GDBStub::GetCpuHaltFlag()) { - if (GDBStub::GetCpuStepFlag()) { - tight_loop = false; - } else { - return; - } - } +std::function CpuManager::GetIdleThreadStartFunc() { + return std::function(IdleThreadFunction); +} + +std::function CpuManager::GetSuspendThreadStartFunc() { + return std::function(SuspendThreadFunction); +} + +void* CpuManager::GetStartFuncParamater() { + return static_cast(this); +} + +void CpuManager::RunGuestThread() { + auto& kernel = system.Kernel(); + { + auto& sched = kernel.CurrentScheduler(); + sched.OnThreadStart(); + } + while (true) { + auto& physical_core = kernel.CurrentPhysicalCore(); + LOG_CRITICAL(Core_ARM, "Running Guest Thread"); + physical_core.Idle(); + LOG_CRITICAL(Core_ARM, "Leaving Guest Thread"); + // physical_core.Run(); + auto& scheduler = physical_core.Scheduler(); + scheduler.TryDoContextSwitch(); } +} - auto& core_timing = system.CoreTiming(); - core_timing.ResetRun(); - bool keep_running{}; - do { - keep_running = false; - for (active_core = 0; active_core < NUM_CPU_CORES; ++active_core) { - core_timing.SwitchContext(active_core); - if (core_timing.CanCurrentContextRun()) { - core_managers[active_core]->RunLoop(tight_loop); +void CpuManager::RunIdleThread() { + auto& kernel = system.Kernel(); + while (true) { + auto& physical_core = kernel.CurrentPhysicalCore(); + LOG_CRITICAL(Core_ARM, "Running Idle Thread"); + physical_core.Idle(); + auto& scheduler = physical_core.Scheduler(); + scheduler.TryDoContextSwitch(); + } +} + +void CpuManager::RunSuspendThread() { + LOG_CRITICAL(Core_ARM, "Suspending Thread Entered"); + auto& kernel = system.Kernel(); + { + auto& sched = kernel.CurrentScheduler(); + sched.OnThreadStart(); + } + while (true) { + auto core = kernel.GetCurrentHostThreadID(); + auto& scheduler = kernel.CurrentScheduler(); + Kernel::Thread* current_thread = scheduler.GetCurrentThread(); + LOG_CRITICAL(Core_ARM, "Suspending Core {}", core); + Common::Fiber::YieldTo(current_thread->GetHostContext(), core_data[core].host_context); + LOG_CRITICAL(Core_ARM, "Unsuspending Core {}", core); + ASSERT(scheduler.ContextSwitchPending()); + ASSERT(core == kernel.GetCurrentHostThreadID()); + scheduler.TryDoContextSwitch(); + } +} + +void CpuManager::Pause(bool paused) { + if (!paused) { + bool all_not_barrier = false; + while (!all_not_barrier) { + all_not_barrier = true; + for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) { + all_not_barrier &= + !core_data[core].is_running.load() && core_data[core].initialized.load(); } - keep_running |= core_timing.CanCurrentContextRun(); } - } while (keep_running); + for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) { + core_data[core].enter_barrier->Set(); + } + if (paused_state.load()) { + bool all_barrier = false; + while (!all_barrier) { + all_barrier = true; + for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) { + all_barrier &= + core_data[core].is_paused.load() && core_data[core].initialized.load(); + } + } + for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) { + core_data[core].exit_barrier->Set(); + } + } + } else { + /// Wait until all cores are paused. + bool all_barrier = false; + while (!all_barrier) { + all_barrier = true; + for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) { + all_barrier &= + core_data[core].is_paused.load() && core_data[core].initialized.load(); + } + } + /// Don't release the barrier + } + paused_state = paused; +} - if (GDBStub::IsServerEnabled()) { - GDBStub::SetCpuStepFlag(false); +void CpuManager::RunThread(std::size_t core) { + /// Initialization + system.RegisterCoreThread(core); + std::string name = "yuzu:CoreHostThread_" + std::to_string(core); + Common::SetCurrentThreadName(name.c_str()); + auto& data = core_data[core]; + data.enter_barrier = std::make_unique(); + data.exit_barrier = std::make_unique(); + data.host_context = Common::Fiber::ThreadToFiber(); + data.is_running = false; + data.initialized = true; + /// Running + while (running_mode) { + data.is_running = false; + data.enter_barrier->Wait(); + auto& scheduler = system.Kernel().CurrentScheduler(); + Kernel::Thread* current_thread = scheduler.GetCurrentThread(); + data.is_running = true; + Common::Fiber::YieldTo(data.host_context, current_thread->GetHostContext()); + data.is_running = false; + data.is_paused = true; + data.exit_barrier->Wait(); + data.is_paused = false; } + /// Time to cleanup + data.host_context->Exit(); + data.enter_barrier.reset(); + data.exit_barrier.reset(); + data.initialized = false; } } // namespace Core -- cgit v1.2.3