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author | Lioncash <mathew1800@gmail.com> | 2018-11-22 07:27:23 +0100 |
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committer | Lioncash <mathew1800@gmail.com> | 2018-11-22 10:28:19 +0100 |
commit | 232d95b56e4d634e21bc6d496cff6b3dae32dc14 (patch) | |
tree | 388c419ff948b26298c057991a049c271f7b31c7 /src/core/cpu_core_manager.cpp | |
parent | Merge pull request #1737 from FernandoS27/layer-copy (diff) | |
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Diffstat (limited to 'src/core/cpu_core_manager.cpp')
-rw-r--r-- | src/core/cpu_core_manager.cpp | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/src/core/cpu_core_manager.cpp b/src/core/cpu_core_manager.cpp new file mode 100644 index 000000000..769a6fefa --- /dev/null +++ b/src/core/cpu_core_manager.cpp @@ -0,0 +1,142 @@ +// Copyright 2018 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "common/assert.h" +#include "core/arm/exclusive_monitor.h" +#include "core/core.h" +#include "core/core_cpu.h" +#include "core/cpu_core_manager.h" +#include "core/gdbstub/gdbstub.h" +#include "core/settings.h" + +namespace Core { +namespace { +void RunCpuCore(const System& system, Cpu& cpu_state) { + while (system.IsPoweredOn()) { + cpu_state.RunLoop(true); + } +} +} // Anonymous namespace + +CpuCoreManager::CpuCoreManager() = default; +CpuCoreManager::~CpuCoreManager() = default; + +void CpuCoreManager::Initialize(System& system) { + barrier = std::make_unique<CpuBarrier>(); + exclusive_monitor = Cpu::MakeExclusiveMonitor(cores.size()); + + for (std::size_t index = 0; index < cores.size(); ++index) { + cores[index] = std::make_unique<Cpu>(*exclusive_monitor, *barrier, index); + } + + // 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()] = cores[0].get(); + if (!Settings::values.use_multi_core) { + return; + } + + for (std::size_t index = 0; index < core_threads.size(); ++index) { + core_threads[index] = std::make_unique<std::thread>(RunCpuCore, std::cref(system), + std::ref(*cores[index + 1])); + thread_to_cpu[core_threads[index]->get_id()] = cores[index + 1].get(); + } +} + +void CpuCoreManager::Shutdown() { + barrier->NotifyEnd(); + if (Settings::values.use_multi_core) { + for (auto& thread : core_threads) { + thread->join(); + thread.reset(); + } + } + + thread_to_cpu.clear(); + for (auto& cpu_core : cores) { + cpu_core.reset(); + } + + exclusive_monitor.reset(); + barrier.reset(); +} + +Cpu& CpuCoreManager::GetCore(std::size_t index) { + return *cores.at(index); +} + +const Cpu& CpuCoreManager::GetCore(std::size_t index) const { + return *cores.at(index); +} + +ExclusiveMonitor& CpuCoreManager::GetExclusiveMonitor() { + return *exclusive_monitor; +} + +const ExclusiveMonitor& CpuCoreManager::GetExclusiveMonitor() const { + return *exclusive_monitor; +} + +Cpu& CpuCoreManager::GetCurrentCore() { + 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 *cores[active_core]; +} + +const Cpu& CpuCoreManager::GetCurrentCore() const { + 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 *cores[active_core]; +} + +void CpuCoreManager::RunLoop(bool tight_loop) { + // Update thread_to_cpu in case Core 0 is run from a different host thread + thread_to_cpu[std::this_thread::get_id()] = cores[0].get(); + + 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; + } + } + } + + for (active_core = 0; active_core < NUM_CPU_CORES; ++active_core) { + cores[active_core]->RunLoop(tight_loop); + if (Settings::values.use_multi_core) { + // Cores 1-3 are run on other threads in this mode + break; + } + } + + if (GDBStub::IsServerEnabled()) { + GDBStub::SetCpuStepFlag(false); + } +} + +void CpuCoreManager::InvalidateAllInstructionCaches() { + for (auto& cpu : cores) { + cpu->ArmInterface().ClearInstructionCache(); + } +} + +} // namespace Core |