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.
This commit is contained in:
Fernando Sahmkow
parent
a83f0b607e
commit
7ee76003ad
57 changed files with 1349 additions and 824 deletions
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@ -2,80 +2,192 @@
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "common/fiber.h"
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#include "common/thread.h"
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#include "core/arm/exclusive_monitor.h"
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#include "core/core.h"
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#include "core/core_manager.h"
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#include "core/core_timing.h"
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#include "core/cpu_manager.h"
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#include "core/gdbstub/gdbstub.h"
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/physical_core.h"
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#include "core/hle/kernel/scheduler.h"
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#include "core/hle/kernel/thread.h"
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namespace Core {
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CpuManager::CpuManager(System& system) : system{system} {}
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CpuManager::~CpuManager() = default;
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void CpuManager::ThreadStart(CpuManager& cpu_manager, std::size_t core) {
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cpu_manager.RunThread(core);
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}
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void CpuManager::Initialize() {
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for (std::size_t index = 0; index < core_managers.size(); ++index) {
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core_managers[index] = std::make_unique<CoreManager>(system, index);
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running_mode = true;
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for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
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core_data[core].host_thread =
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std::make_unique<std::thread>(ThreadStart, std::ref(*this), core);
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}
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}
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void CpuManager::Shutdown() {
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for (auto& cpu_core : core_managers) {
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cpu_core.reset();
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running_mode = false;
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Pause(false);
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for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
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core_data[core].host_thread->join();
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}
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}
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CoreManager& CpuManager::GetCoreManager(std::size_t index) {
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return *core_managers.at(index);
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void CpuManager::GuestThreadFunction(void* cpu_manager_) {
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CpuManager* cpu_manager = static_cast<CpuManager*>(cpu_manager_);
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cpu_manager->RunGuestThread();
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}
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const CoreManager& CpuManager::GetCoreManager(std::size_t index) const {
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return *core_managers.at(index);
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void CpuManager::IdleThreadFunction(void* cpu_manager_) {
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CpuManager* cpu_manager = static_cast<CpuManager*>(cpu_manager_);
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cpu_manager->RunIdleThread();
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}
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CoreManager& CpuManager::GetCurrentCoreManager() {
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// Otherwise, use single-threaded mode active_core variable
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return *core_managers[active_core];
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void CpuManager::SuspendThreadFunction(void* cpu_manager_) {
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CpuManager* cpu_manager = static_cast<CpuManager*>(cpu_manager_);
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cpu_manager->RunSuspendThread();
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}
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const CoreManager& CpuManager::GetCurrentCoreManager() const {
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// Otherwise, use single-threaded mode active_core variable
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return *core_managers[active_core];
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std::function<void(void*)> CpuManager::GetGuestThreadStartFunc() {
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return std::function<void(void*)>(GuestThreadFunction);
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}
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void CpuManager::RunLoop(bool tight_loop) {
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if (GDBStub::IsServerEnabled()) {
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GDBStub::HandlePacket();
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std::function<void(void*)> CpuManager::GetIdleThreadStartFunc() {
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return std::function<void(void*)>(IdleThreadFunction);
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}
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// If the loop is halted and we want to step, use a tiny (1) number of instructions to
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// execute. Otherwise, get out of the loop function.
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if (GDBStub::GetCpuHaltFlag()) {
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if (GDBStub::GetCpuStepFlag()) {
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tight_loop = false;
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} else {
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return;
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std::function<void(void*)> CpuManager::GetSuspendThreadStartFunc() {
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return std::function<void(void*)>(SuspendThreadFunction);
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}
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void* CpuManager::GetStartFuncParamater() {
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return static_cast<void*>(this);
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}
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void CpuManager::RunGuestThread() {
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auto& kernel = system.Kernel();
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{
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auto& sched = kernel.CurrentScheduler();
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sched.OnThreadStart();
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}
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while (true) {
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auto& physical_core = kernel.CurrentPhysicalCore();
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LOG_CRITICAL(Core_ARM, "Running Guest Thread");
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physical_core.Idle();
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LOG_CRITICAL(Core_ARM, "Leaving Guest Thread");
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// physical_core.Run();
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auto& scheduler = physical_core.Scheduler();
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scheduler.TryDoContextSwitch();
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}
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}
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void CpuManager::RunIdleThread() {
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auto& kernel = system.Kernel();
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while (true) {
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auto& physical_core = kernel.CurrentPhysicalCore();
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LOG_CRITICAL(Core_ARM, "Running Idle Thread");
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physical_core.Idle();
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auto& scheduler = physical_core.Scheduler();
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scheduler.TryDoContextSwitch();
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}
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}
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void CpuManager::RunSuspendThread() {
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LOG_CRITICAL(Core_ARM, "Suspending Thread Entered");
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auto& kernel = system.Kernel();
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{
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auto& sched = kernel.CurrentScheduler();
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sched.OnThreadStart();
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}
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while (true) {
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auto core = kernel.GetCurrentHostThreadID();
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auto& scheduler = kernel.CurrentScheduler();
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Kernel::Thread* current_thread = scheduler.GetCurrentThread();
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LOG_CRITICAL(Core_ARM, "Suspending Core {}", core);
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Common::Fiber::YieldTo(current_thread->GetHostContext(), core_data[core].host_context);
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LOG_CRITICAL(Core_ARM, "Unsuspending Core {}", core);
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ASSERT(scheduler.ContextSwitchPending());
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ASSERT(core == kernel.GetCurrentHostThreadID());
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scheduler.TryDoContextSwitch();
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}
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}
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void CpuManager::Pause(bool paused) {
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if (!paused) {
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bool all_not_barrier = false;
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while (!all_not_barrier) {
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all_not_barrier = true;
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for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
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all_not_barrier &=
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!core_data[core].is_running.load() && core_data[core].initialized.load();
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}
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}
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}
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auto& core_timing = system.CoreTiming();
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core_timing.ResetRun();
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bool keep_running{};
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do {
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keep_running = false;
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for (active_core = 0; active_core < NUM_CPU_CORES; ++active_core) {
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core_timing.SwitchContext(active_core);
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if (core_timing.CanCurrentContextRun()) {
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core_managers[active_core]->RunLoop(tight_loop);
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}
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keep_running |= core_timing.CanCurrentContextRun();
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for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
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core_data[core].enter_barrier->Set();
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}
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} while (keep_running);
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if (GDBStub::IsServerEnabled()) {
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GDBStub::SetCpuStepFlag(false);
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if (paused_state.load()) {
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bool all_barrier = false;
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while (!all_barrier) {
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all_barrier = true;
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for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
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all_barrier &=
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core_data[core].is_paused.load() && core_data[core].initialized.load();
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}
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}
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for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
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core_data[core].exit_barrier->Set();
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}
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}
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} else {
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/// Wait until all cores are paused.
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bool all_barrier = false;
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while (!all_barrier) {
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all_barrier = true;
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for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
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all_barrier &=
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core_data[core].is_paused.load() && core_data[core].initialized.load();
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}
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}
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/// Don't release the barrier
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}
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paused_state = paused;
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}
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void CpuManager::RunThread(std::size_t core) {
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/// Initialization
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system.RegisterCoreThread(core);
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std::string name = "yuzu:CoreHostThread_" + std::to_string(core);
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Common::SetCurrentThreadName(name.c_str());
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auto& data = core_data[core];
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data.enter_barrier = std::make_unique<Common::Event>();
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data.exit_barrier = std::make_unique<Common::Event>();
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data.host_context = Common::Fiber::ThreadToFiber();
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data.is_running = false;
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data.initialized = true;
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/// Running
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while (running_mode) {
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data.is_running = false;
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data.enter_barrier->Wait();
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auto& scheduler = system.Kernel().CurrentScheduler();
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Kernel::Thread* current_thread = scheduler.GetCurrentThread();
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data.is_running = true;
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Common::Fiber::YieldTo(data.host_context, current_thread->GetHostContext());
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data.is_running = false;
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data.is_paused = true;
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data.exit_barrier->Wait();
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data.is_paused = false;
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}
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/// Time to cleanup
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data.host_context->Exit();
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data.enter_barrier.reset();
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data.exit_barrier.reset();
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data.initialized = false;
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}
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} // namespace Core
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