diff options
Diffstat (limited to 'src/core')
-rw-r--r-- | src/core/hle/kernel/k_memory_manager.cpp | 12 | ||||
-rw-r--r-- | src/core/hle/kernel/k_memory_manager.h | 14 |
2 files changed, 26 insertions, 0 deletions
diff --git a/src/core/hle/kernel/k_memory_manager.cpp b/src/core/hle/kernel/k_memory_manager.cpp index 9027602bf..aa71697b2 100644 --- a/src/core/hle/kernel/k_memory_manager.cpp +++ b/src/core/hle/kernel/k_memory_manager.cpp @@ -173,4 +173,16 @@ ResultCode KMemoryManager::Free(KPageLinkedList& page_list, std::size_t num_page return RESULT_SUCCESS; } +std::size_t KMemoryManager::Impl::CalculateManagementOverheadSize(std::size_t region_size) { + const std::size_t ref_count_size = (region_size / PageSize) * sizeof(u16); + const std::size_t optimize_map_size = + (Common::AlignUp((region_size / PageSize), Common::BitSize<u64>()) / + Common::BitSize<u64>()) * + sizeof(u64); + const std::size_t manager_meta_size = + Common::AlignUp(optimize_map_size + ref_count_size, PageSize); + const std::size_t page_heap_size = KPageHeap::CalculateManagementOverheadSize(region_size); + return manager_meta_size + page_heap_size; +} + } // namespace Kernel diff --git a/src/core/hle/kernel/k_memory_manager.h b/src/core/hle/kernel/k_memory_manager.h index 587dad178..ac840b3d0 100644 --- a/src/core/hle/kernel/k_memory_manager.h +++ b/src/core/hle/kernel/k_memory_manager.h @@ -60,6 +60,10 @@ public: static constexpr std::size_t MaxManagerCount = 10; public: + static std::size_t CalculateManagementOverheadSize(std::size_t region_size) { + return Impl::CalculateManagementOverheadSize(region_size); + } + static constexpr u32 EncodeOption(Pool pool, Direction dir) { return (static_cast<u32>(pool) << static_cast<u32>(Pool::Shift)) | (static_cast<u32>(dir) << static_cast<u32>(Direction::Shift)); @@ -90,6 +94,16 @@ private: Pool pool{}; public: + static std::size_t CalculateManagementOverheadSize(std::size_t region_size); + + static constexpr std::size_t CalculateOptimizedProcessOverheadSize( + std::size_t region_size) { + return (Common::AlignUp((region_size / PageSize), Common::BitSize<u64>()) / + Common::BitSize<u64>()) * + sizeof(u64); + } + + public: Impl() = default; std::size_t Initialize(Pool new_pool, u64 start_address, u64 end_address); |