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author | David Marcec <dmarcecguzman@gmail.com> | 2019-06-26 08:52:34 +0200 |
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committer | David Marcec <dmarcecguzman@gmail.com> | 2019-06-26 08:52:34 +0200 |
commit | f67039c067282e560175b1b346405e898b40e993 (patch) | |
tree | 664a798153170057b0ebbe9ffe1b3705cefc8e64 /src/core/hle/service/time/time_sharedmemory.h | |
parent | Implement Time::GetSharedMemoryNativeHandle (diff) | |
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Diffstat (limited to 'src/core/hle/service/time/time_sharedmemory.h')
-rw-r--r-- | src/core/hle/service/time/time_sharedmemory.h | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/src/core/hle/service/time/time_sharedmemory.h b/src/core/hle/service/time/time_sharedmemory.h index ab536005c..cb8253541 100644 --- a/src/core/hle/service/time/time_sharedmemory.h +++ b/src/core/hle/service/time/time_sharedmemory.h @@ -1,4 +1,4 @@ -// Copyright 2018 yuzu emulator team +// Copyright 2019 yuzu emulator team // Licensed under GPLv2 or any later version // Refer to the license.txt file included. @@ -11,7 +11,7 @@ namespace Service::Time { class SharedMemory { public: - SharedMemory(Core::System& system); + explicit SharedMemory(Core::System& system); ~SharedMemory(); // Return the shared memory handle @@ -21,51 +21,54 @@ public: void SetStandardSteadyClockTimepoint(const SteadyClockTimePoint& timepoint); void SetStandardLocalSystemClockContext(const SystemClockContext& context); void SetStandardNetworkSystemClockContext(const SystemClockContext& context); - void SetStandardUserSystemClockAutomaticCorrectionEnabled(const bool enabled); + void SetStandardUserSystemClockAutomaticCorrectionEnabled(bool enabled); // Pull from memory barriers in the shared memory - SteadyClockTimePoint GetStandardSteadyClockTimepoint() const; - SystemClockContext GetStandardLocalSystemClockContext() const; - SystemClockContext GetStandardNetworkSystemClockContext() const; - bool GetStandardUserSystemClockAutomaticCorrectionEnabled() const; + SteadyClockTimePoint GetStandardSteadyClockTimepoint(); + SystemClockContext GetStandardLocalSystemClockContext(); + SystemClockContext GetStandardNetworkSystemClockContext(); + bool GetStandardUserSystemClockAutomaticCorrectionEnabled(); // TODO(ogniK): We have to properly simulate memory barriers, how are we going to do this? - template <typename T> + template <typename T, std::size_t Offset> struct MemoryBarrier { + static_assert(std::is_trivially_constructible_v<T>, "T must be trivially constructable"); u32_le read_attempt{}; - T data[2]{}; + std::array<T, 2> data{}; // These are not actually memory barriers at the moment as we don't have multicore and all // HLE is mutexed. This will need to properly be implemented when we start updating the time // points on threads. As of right now, we'll be updated both values synchronously and just // incrementing the read_attempt to indicate that we waited. - void StoreData(T data_to_store) { + void StoreData(u8* shared_memory, T data_to_store) { + std::memcpy(this, shared_memory + Offset, sizeof(*this)); read_attempt++; data[read_attempt & 1] = data_to_store; + std::memcpy(shared_memory + Offset, this, sizeof(*this)); } // For reading we're just going to read the last stored value. If there was no value stored // it will just end up reading an empty value as intended. - T ReadData() const { + T ReadData(u8* shared_memory) { + std::memcpy(this, shared_memory + Offset, sizeof(*this)); return data[(read_attempt - 1) & 1]; } }; // Shared memory format struct Format { - MemoryBarrier<SteadyClockTimePoint> standard_steady_clock_timepoint; - MemoryBarrier<SystemClockContext> standard_local_system_clock_context; - MemoryBarrier<SystemClockContext> standard_network_system_clock_context; - MemoryBarrier<u8> standard_user_system_clock_automatic_correction; + MemoryBarrier<SteadyClockTimePoint, 0x0> standard_steady_clock_timepoint; + MemoryBarrier<SystemClockContext, 0x38> standard_local_system_clock_context; + MemoryBarrier<SystemClockContext, 0x80> standard_network_system_clock_context; + MemoryBarrier<bool, 0xc8> standard_user_system_clock_automatic_correction; u32_le format_version; }; static_assert(sizeof(Format) == 0xd8, "Format is an invalid size"); private: - const std::size_t SHARED_MEMORY_SIZE = 0x1000; Kernel::SharedPtr<Kernel::SharedMemory> shared_memory_holder{}; Core::System& system; - Format* shared_memory_format; + Format shared_memory_format{}; }; } // namespace Service::Time |