diff options
| -rw-r--r-- | src/core/hle/kernel/kernel.cpp | 77 |
1 files changed, 31 insertions, 46 deletions
diff --git a/src/core/hle/kernel/kernel.cpp b/src/core/hle/kernel/kernel.cpp index 5f917686f..022cd413d 100644 --- a/src/core/hle/kernel/kernel.cpp +++ b/src/core/hle/kernel/kernel.cpp @@ -104,10 +104,8 @@ struct KernelCore::Impl { exclusive_monitor.reset(); - num_host_threads = 0; - std::fill(register_host_thread_keys.begin(), register_host_thread_keys.end(), - std::thread::id{}); - std::fill(register_host_thread_values.begin(), register_host_thread_values.end(), 0); + // Next host thead ID to use, 0-3 IDs represent core threads, >3 represent others + next_host_thread_id = Core::Hardware::NUM_CPU_CORES; // Ensures all service threads gracefully shutdown service_threads.clear(); @@ -190,52 +188,46 @@ struct KernelCore::Impl { } } + /// Creates a new host thread ID, should only be called by GetHostThreadId + u32 AllocateHostThreadId(std::optional<std::size_t> core_id) { + if (core_id) { + // The first for slots are reserved for CPU core threads + ASSERT(*core_id < Core::Hardware::NUM_CPU_CORES); + return static_cast<u32>(*core_id); + } else { + return next_host_thread_id++; + } + } + + /// Gets the host thread ID for the caller, allocating a new one if this is the first time + u32 GetHostThreadId(std::optional<std::size_t> core_id = std::nullopt) { + const thread_local auto host_thread_id{AllocateHostThreadId(core_id)}; + return host_thread_id; + } + + /// Registers a CPU core thread by allocating a host thread ID for it void RegisterCoreThread(std::size_t core_id) { - const std::thread::id this_id = std::this_thread::get_id(); + ASSERT(core_id < Core::Hardware::NUM_CPU_CORES); + const auto this_id = GetHostThreadId(core_id); if (!is_multicore) { single_core_thread_id = this_id; } - const auto end = - register_host_thread_keys.begin() + static_cast<ptrdiff_t>(num_host_threads); - const auto it = std::find(register_host_thread_keys.begin(), end, this_id); - ASSERT(core_id < Core::Hardware::NUM_CPU_CORES); - ASSERT(it == end); - InsertHostThread(static_cast<u32>(core_id)); } + /// Registers a new host thread by allocating a host thread ID for it void RegisterHostThread() { - const std::thread::id this_id = std::this_thread::get_id(); - const auto end = - register_host_thread_keys.begin() + static_cast<ptrdiff_t>(num_host_threads); - const auto it = std::find(register_host_thread_keys.begin(), end, this_id); - if (it == end) { - InsertHostThread(registered_thread_ids++); - } - } - - void InsertHostThread(u32 value) { - const size_t index = num_host_threads++; - ASSERT_MSG(index < NUM_REGISTRABLE_HOST_THREADS, "Too many host threads"); - register_host_thread_values[index] = value; - register_host_thread_keys[index] = std::this_thread::get_id(); + [[maybe_unused]] const auto this_id = GetHostThreadId(); } - [[nodiscard]] u32 GetCurrentHostThreadID() const { - const std::thread::id this_id = std::this_thread::get_id(); + [[nodiscard]] u32 GetCurrentHostThreadID() { + const auto this_id = GetHostThreadId(); if (!is_multicore && single_core_thread_id == this_id) { return static_cast<u32>(system.GetCpuManager().CurrentCore()); } - const auto end = - register_host_thread_keys.begin() + static_cast<ptrdiff_t>(num_host_threads); - const auto it = std::find(register_host_thread_keys.begin(), end, this_id); - if (it == end) { - return Core::INVALID_HOST_THREAD_ID; - } - return register_host_thread_values[static_cast<size_t>( - std::distance(register_host_thread_keys.begin(), it))]; + return this_id; } - Core::EmuThreadHandle GetCurrentEmuThreadID() const { + [[nodiscard]] Core::EmuThreadHandle GetCurrentEmuThreadID() { Core::EmuThreadHandle result = Core::EmuThreadHandle::InvalidHandle(); result.host_handle = GetCurrentHostThreadID(); if (result.host_handle >= Core::Hardware::NUM_CPU_CORES) { @@ -329,15 +321,8 @@ struct KernelCore::Impl { std::unique_ptr<Core::ExclusiveMonitor> exclusive_monitor; std::vector<Kernel::PhysicalCore> cores; - // 0-3 IDs represent core threads, >3 represent others - std::atomic<u32> registered_thread_ids{Core::Hardware::NUM_CPU_CORES}; - - // Number of host threads is a relatively high number to avoid overflowing - static constexpr size_t NUM_REGISTRABLE_HOST_THREADS = 1024; - std::atomic<size_t> num_host_threads{0}; - std::array<std::atomic<std::thread::id>, NUM_REGISTRABLE_HOST_THREADS> - register_host_thread_keys{}; - std::array<std::atomic<u32>, NUM_REGISTRABLE_HOST_THREADS> register_host_thread_values{}; + // Next host thead ID to use, 0-3 IDs represent core threads, >3 represent others + std::atomic<u32> next_host_thread_id{Core::Hardware::NUM_CPU_CORES}; // Kernel memory management std::unique_ptr<Memory::MemoryManager> memory_manager; @@ -357,7 +342,7 @@ struct KernelCore::Impl { std::array<std::unique_ptr<Kernel::KScheduler>, Core::Hardware::NUM_CPU_CORES> schedulers{}; bool is_multicore{}; - std::thread::id single_core_thread_id{}; + u32 single_core_thread_id{}; std::array<u64, Core::Hardware::NUM_CPU_CORES> svc_ticks{}; |