Atmosphere/libraries/libstratosphere/include/stratosphere/fs/fs_i_buffer_manager.hpp

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/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours.hpp>
namespace ams::fs {
class IBufferManager {
public:
class BufferAttribute {
private:
s32 m_level;
public:
constexpr BufferAttribute() : m_level(0) { /* ... */ }
constexpr explicit BufferAttribute(s32 l) : m_level(l) { /* ... */ }
constexpr s32 GetLevel() const { return m_level; }
};
using CacheHandle = u64;
static constexpr s32 BufferLevelMin = 0;
using MemoryRange = std::pair<uintptr_t, size_t>;
static constexpr ALWAYS_INLINE MemoryRange MakeMemoryRange(uintptr_t address, size_t size) { return MemoryRange(address, size); }
public:
virtual ~IBufferManager() { /* ... */ }
ALWAYS_INLINE const MemoryRange AllocateBuffer(size_t size, const BufferAttribute &attr) {
return this->DoAllocateBuffer(size, attr);
}
ALWAYS_INLINE const MemoryRange AllocateBuffer(size_t size) {
return this->DoAllocateBuffer(size, BufferAttribute());
}
ALWAYS_INLINE void DeallocateBuffer(uintptr_t address, size_t size) {
return this->DoDeallocateBuffer(address, size);
}
ALWAYS_INLINE void DeallocateBuffer(const MemoryRange &memory_range) {
return this->DoDeallocateBuffer(memory_range.first, memory_range.second);
}
ALWAYS_INLINE CacheHandle RegisterCache(uintptr_t address, size_t size, const BufferAttribute &attr) {
return this->DoRegisterCache(address, size, attr);
}
ALWAYS_INLINE CacheHandle RegisterCache(const MemoryRange &memory_range, const BufferAttribute &attr) {
return this->DoRegisterCache(memory_range.first, memory_range.second, attr);
}
ALWAYS_INLINE const std::pair<uintptr_t, size_t> AcquireCache(CacheHandle handle) {
return this->DoAcquireCache(handle);
}
ALWAYS_INLINE size_t GetTotalSize() const {
return this->DoGetTotalSize();
}
ALWAYS_INLINE size_t GetFreeSize() const {
return this->DoGetFreeSize();
}
ALWAYS_INLINE size_t GetTotalAllocatableSize() const {
return this->DoGetTotalAllocatableSize();
}
ALWAYS_INLINE size_t GetFreeSizePeak() const {
return this->DoGetFreeSizePeak();
}
ALWAYS_INLINE size_t GetTotalAllocatableSizePeak() const {
return this->DoGetTotalAllocatableSizePeak();
}
ALWAYS_INLINE size_t GetRetriedCount() const {
return this->DoGetRetriedCount();
}
ALWAYS_INLINE void ClearPeak() {
return this->DoClearPeak();
}
protected:
virtual const MemoryRange DoAllocateBuffer(size_t size, const BufferAttribute &attr) = 0;
virtual void DoDeallocateBuffer(uintptr_t address, size_t size) = 0;
virtual CacheHandle DoRegisterCache(uintptr_t address, size_t size, const BufferAttribute &attr) = 0;
virtual const MemoryRange DoAcquireCache(CacheHandle handle) = 0;
virtual size_t DoGetTotalSize() const = 0;
virtual size_t DoGetFreeSize() const = 0;
virtual size_t DoGetTotalAllocatableSize() const = 0;
virtual size_t DoGetFreeSizePeak() const = 0;
virtual size_t DoGetTotalAllocatableSizePeak() const = 0;
virtual size_t DoGetRetriedCount() const = 0;
virtual void DoClearPeak() = 0;
};
}