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Code Issues Releases Activity

core: Make the live Cpu instances unique_ptrs instead of shared_ptrs

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There's no need for shared ownership here, as the only owning class
instance of those Cpu instances is the System class itself. We can also
make the thread_to_cpu map use regular pointers instead of shared_ptrs,
given that the Cpu instances will always outlive the cases where they're
used with that map.
This commit is contained in:
Lioncash 2018-10-15 08:58:51 -04:00
parent aeadbfa790
commit 59f872a8e0
1 changed files with 9 additions and 9 deletions
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18
src/core/core.cpp
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@ -71,9 +71,9 @@ FileSys::VirtualFile GetGameFileFromPath(const FileSys::VirtualFilesystem& vfs,
} }
/// Runs a CPU core while the system is powered on /// Runs a CPU core while the system is powered on
void RunCpuCore(std::shared_ptr<Cpu> cpu_state) { void RunCpuCore(Cpu& cpu_state) {
while (Core::System::GetInstance().IsPoweredOn()) { while (Core::System::GetInstance().IsPoweredOn()) {
cpu_state->RunLoop(true); cpu_state.RunLoop(true);
} }
} }
} // Anonymous namespace } // Anonymous namespace
@ -95,7 +95,7 @@ struct System::Impl {
status = ResultStatus::Success; status = ResultStatus::Success;
// Update thread_to_cpu in case Core 0 is run from a different host thread // 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]; thread_to_cpu[std::this_thread::get_id()] = cpu_cores[0].get();
if (GDBStub::IsServerEnabled()) { if (GDBStub::IsServerEnabled()) {
GDBStub::HandlePacket(); GDBStub::HandlePacket();
@ -142,7 +142,7 @@ struct System::Impl {
cpu_barrier = std::make_unique<CpuBarrier>(); cpu_barrier = std::make_unique<CpuBarrier>();
cpu_exclusive_monitor = Cpu::MakeExclusiveMonitor(cpu_cores.size()); cpu_exclusive_monitor = Cpu::MakeExclusiveMonitor(cpu_cores.size());
for (std::size_t index = 0; index < cpu_cores.size(); ++index) { for (std::size_t index = 0; index < cpu_cores.size(); ++index) {
cpu_cores[index] = std::make_shared<Cpu>(*cpu_exclusive_monitor, *cpu_barrier, index); cpu_cores[index] = std::make_unique<Cpu>(*cpu_exclusive_monitor, *cpu_barrier, index);
} }
telemetry_session = std::make_unique<Core::TelemetrySession>(); telemetry_session = std::make_unique<Core::TelemetrySession>();
@ -160,12 +160,12 @@ struct System::Impl {
// Create threads for CPU cores 1-3, and build thread_to_cpu map // Create threads for CPU cores 1-3, and build thread_to_cpu map
// CPU core 0 is run on the main thread // CPU core 0 is run on the main thread
thread_to_cpu[std::this_thread::get_id()] = cpu_cores[0]; thread_to_cpu[std::this_thread::get_id()] = cpu_cores[0].get();
if (Settings::values.use_multi_core) { if (Settings::values.use_multi_core) {
for (std::size_t index = 0; index < cpu_core_threads.size(); ++index) { for (std::size_t index = 0; index < cpu_core_threads.size(); ++index) {
cpu_core_threads[index] = cpu_core_threads[index] =
std::make_unique<std::thread>(RunCpuCore, cpu_cores[index + 1]); std::make_unique<std::thread>(RunCpuCore, std::ref(*cpu_cores[index + 1]));
thread_to_cpu[cpu_core_threads[index]->get_id()] = cpu_cores[index + 1]; thread_to_cpu[cpu_core_threads[index]->get_id()] = cpu_cores[index + 1].get();
} }
} }
@ -285,7 +285,7 @@ struct System::Impl {
std::shared_ptr<Tegra::DebugContext> debug_context; std::shared_ptr<Tegra::DebugContext> debug_context;
std::unique_ptr<ExclusiveMonitor> cpu_exclusive_monitor; std::unique_ptr<ExclusiveMonitor> cpu_exclusive_monitor;
std::unique_ptr<CpuBarrier> cpu_barrier; std::unique_ptr<CpuBarrier> cpu_barrier;
std::array<std::shared_ptr<Cpu>, NUM_CPU_CORES> cpu_cores; std::array<std::unique_ptr<Cpu>, NUM_CPU_CORES> cpu_cores;
std::array<std::unique_ptr<std::thread>, NUM_CPU_CORES - 1> cpu_core_threads; std::array<std::unique_ptr<std::thread>, NUM_CPU_CORES - 1> cpu_core_threads;
std::size_t active_core{}; ///< Active core, only used in single thread mode std::size_t active_core{}; ///< Active core, only used in single thread mode
@ -299,7 +299,7 @@ struct System::Impl {
std::string status_details = ""; std::string status_details = "";
/// Map of guest threads to CPU cores /// Map of guest threads to CPU cores
std::map<std::thread::id, std::shared_ptr<Cpu>> thread_to_cpu; std::map<std::thread::id, Cpu*> thread_to_cpu;
Core::PerfStats perf_stats; Core::PerfStats perf_stats;
Core::FrameLimiter frame_limiter; Core::FrameLimiter frame_limiter;