// Copyright 2014 Citra Emulator Project // Licensed under GPLv2 or any later version // Refer to the license.txt file included. #pragma once #include #include #include "common/common_types.h" namespace Kernel { struct AddressMapping; class VMManager; struct MemoryRegionInfo { u32 base; // Not an address, but offset from start of FCRAM u32 size; u32 used; // The domain of the interval_set are offsets from start of FCRAM using IntervalSet = boost::icl::interval_set; using Interval = IntervalSet::interval_type; IntervalSet free_blocks; /** * Reset the allocator state * @param base The base offset the beginning of FCRAM. * @param size The region size this allocator manages */ void Reset(u32 base, u32 size); /** * Allocates memory from the heap. * @param size The size of memory to allocate. * @returns The set of blocks that make up the allocation request. Empty set if there is no * enough space. */ IntervalSet HeapAllocate(u32 size); /** * Allocates memory from the linear heap with specific address and size. * @param offset the address offset to the beginning of FCRAM. * @param size size of the memory to allocate. * @returns true if the allocation is successful. false if the requested region is not free. */ bool LinearAllocate(u32 offset, u32 size); /** * Allocates memory from the linear heap with only size specified. * @param size size of the memory to allocate. * @returns the address offset to the beginning of FCRAM; null if there is no enough space */ std::optional LinearAllocate(u32 size); /** * Frees one segment of memory. The memory must have been allocated as heap or linear heap. * @param offset the region address offset to the beginning of FCRAM. * @param size the size of the region to free. */ void Free(u32 offset, u32 size); }; } // namespace Kernel