yuzu/src/core/core.cpp
Lioncash 3a4841e403 core: Don't construct instance of Core::System, just to access its live instance
This would result in a lot of allocations and related object
construction, just to toss it all away immediately after the call.

These are definitely not intentional, and it was intended that all of
these should have been accessing the static function GetInstance()
through the name itself, not constructed instances.
2018-07-18 18:18:27 -04:00

260 lines
8.1 KiB
C++

// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <memory>
#include <utility>
#include "common/logging/log.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/gdbstub/gdbstub.h"
#include "core/hle/kernel/client_port.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/service/service.h"
#include "core/hle/service/sm/controller.h"
#include "core/hle/service/sm/sm.h"
#include "core/hw/hw.h"
#include "core/loader/loader.h"
#include "core/memory_setup.h"
#include "core/settings.h"
#include "video_core/video_core.h"
namespace Core {
/*static*/ System System::s_instance;
System::~System() = default;
/// Runs a CPU core while the system is powered on
static void RunCpuCore(std::shared_ptr<Cpu> cpu_state) {
while (Core::System::GetInstance().IsPoweredOn()) {
cpu_state->RunLoop(true);
}
}
Cpu& System::CurrentCpuCore() {
// If multicore is enabled, use host thread to figure out the current CPU core
if (Settings::values.use_multi_core) {
const auto& search = thread_to_cpu.find(std::this_thread::get_id());
ASSERT(search != thread_to_cpu.end());
ASSERT(search->second);
return *search->second;
}
// Otherwise, use single-threaded mode active_core variable
return *cpu_cores[active_core];
}
System::ResultStatus System::RunLoop(bool tight_loop) {
status = ResultStatus::Success;
// Update thread_to_cpu in case Core 0 is run from a different host thread
thread_to_cpu[std::this_thread::get_id()] = cpu_cores[0];
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()) {
GDBStub::SetCpuStepFlag(false);
tight_loop = false;
} else {
return ResultStatus::Success;
}
}
}
for (active_core = 0; active_core < NUM_CPU_CORES; ++active_core) {
cpu_cores[active_core]->RunLoop(tight_loop);
if (Settings::values.use_multi_core) {
// Cores 1-3 are run on other threads in this mode
break;
}
}
return status;
}
System::ResultStatus System::SingleStep() {
return RunLoop(false);
}
System::ResultStatus System::Load(EmuWindow* emu_window, const std::string& filepath) {
app_loader = Loader::GetLoader(filepath);
if (!app_loader) {
LOG_CRITICAL(Core, "Failed to obtain loader for {}!", filepath);
return ResultStatus::ErrorGetLoader;
}
std::pair<boost::optional<u32>, Loader::ResultStatus> system_mode =
app_loader->LoadKernelSystemMode();
if (system_mode.second != Loader::ResultStatus::Success) {
LOG_CRITICAL(Core, "Failed to determine system mode (Error {})!",
static_cast<int>(system_mode.second));
switch (system_mode.second) {
case Loader::ResultStatus::ErrorEncrypted:
return ResultStatus::ErrorLoader_ErrorEncrypted;
case Loader::ResultStatus::ErrorInvalidFormat:
return ResultStatus::ErrorLoader_ErrorInvalidFormat;
case Loader::ResultStatus::ErrorUnsupportedArch:
return ResultStatus::ErrorUnsupportedArch;
default:
return ResultStatus::ErrorSystemMode;
}
}
ResultStatus init_result{Init(emu_window, system_mode.first.get())};
if (init_result != ResultStatus::Success) {
LOG_CRITICAL(Core, "Failed to initialize system (Error {})!",
static_cast<int>(init_result));
System::Shutdown();
return init_result;
}
const Loader::ResultStatus load_result{app_loader->Load(current_process)};
if (Loader::ResultStatus::Success != load_result) {
LOG_CRITICAL(Core, "Failed to load ROM (Error {})!", static_cast<int>(load_result));
System::Shutdown();
switch (load_result) {
case Loader::ResultStatus::ErrorEncrypted:
return ResultStatus::ErrorLoader_ErrorEncrypted;
case Loader::ResultStatus::ErrorInvalidFormat:
return ResultStatus::ErrorLoader_ErrorInvalidFormat;
case Loader::ResultStatus::ErrorUnsupportedArch:
return ResultStatus::ErrorUnsupportedArch;
default:
return ResultStatus::ErrorLoader;
}
}
status = ResultStatus::Success;
return status;
}
void System::PrepareReschedule() {
CurrentCpuCore().PrepareReschedule();
}
PerfStats::Results System::GetAndResetPerfStats() {
return perf_stats.GetAndResetStats(CoreTiming::GetGlobalTimeUs());
}
const std::shared_ptr<Kernel::Scheduler>& System::Scheduler(size_t core_index) {
ASSERT(core_index < NUM_CPU_CORES);
return cpu_cores[core_index]->Scheduler();
}
ARM_Interface& System::ArmInterface(size_t core_index) {
ASSERT(core_index < NUM_CPU_CORES);
return cpu_cores[core_index]->ArmInterface();
}
Cpu& System::CpuCore(size_t core_index) {
ASSERT(core_index < NUM_CPU_CORES);
return *cpu_cores[core_index];
}
System::ResultStatus System::Init(EmuWindow* emu_window, u32 system_mode) {
LOG_DEBUG(HW_Memory, "initialized OK");
CoreTiming::Init();
current_process = Kernel::Process::Create("main");
cpu_barrier = std::make_shared<CpuBarrier>();
for (size_t index = 0; index < cpu_cores.size(); ++index) {
cpu_cores[index] = std::make_shared<Cpu>(cpu_barrier, index);
}
gpu_core = std::make_unique<Tegra::GPU>();
telemetry_session = std::make_unique<Core::TelemetrySession>();
service_manager = std::make_shared<Service::SM::ServiceManager>();
HW::Init();
Kernel::Init(system_mode);
Service::Init(service_manager);
GDBStub::Init();
if (!VideoCore::Init(emu_window)) {
return ResultStatus::ErrorVideoCore;
}
// Create threads for CPU cores 1-3, and build thread_to_cpu map
// CPU core 0 is run on the main thread
thread_to_cpu[std::this_thread::get_id()] = cpu_cores[0];
if (Settings::values.use_multi_core) {
for (size_t index = 0; index < cpu_core_threads.size(); ++index) {
cpu_core_threads[index] =
std::make_unique<std::thread>(RunCpuCore, cpu_cores[index + 1]);
thread_to_cpu[cpu_core_threads[index]->get_id()] = cpu_cores[index + 1];
}
}
LOG_DEBUG(Core, "Initialized OK");
// Reset counters and set time origin to current frame
GetAndResetPerfStats();
perf_stats.BeginSystemFrame();
return ResultStatus::Success;
}
void System::Shutdown() {
// Log last frame performance stats
auto perf_results = GetAndResetPerfStats();
Telemetry().AddField(Telemetry::FieldType::Performance, "Shutdown_EmulationSpeed",
perf_results.emulation_speed * 100.0);
Telemetry().AddField(Telemetry::FieldType::Performance, "Shutdown_Framerate",
perf_results.game_fps);
Telemetry().AddField(Telemetry::FieldType::Performance, "Shutdown_Frametime",
perf_results.frametime * 1000.0);
// Shutdown emulation session
VideoCore::Shutdown();
GDBStub::Shutdown();
Service::Shutdown();
Kernel::Shutdown();
HW::Shutdown();
service_manager.reset();
telemetry_session.reset();
gpu_core.reset();
// Close all CPU/threading state
cpu_barrier->NotifyEnd();
if (Settings::values.use_multi_core) {
for (auto& thread : cpu_core_threads) {
thread->join();
thread.reset();
}
}
thread_to_cpu.clear();
for (auto& cpu_core : cpu_cores) {
cpu_core.reset();
}
cpu_barrier.reset();
// Close core timing
CoreTiming::Shutdown();
// Close app loader
app_loader.reset();
LOG_DEBUG(Core, "Shutdown OK");
}
Service::SM::ServiceManager& System::ServiceManager() {
return *service_manager;
}
const Service::SM::ServiceManager& System::ServiceManager() const {
return *service_manager;
}
} // namespace Core