mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-25 08:10:33 +01:00
113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
/*
|
|
* 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>
|
|
#include <stratosphere/fs/impl/fs_newable.hpp>
|
|
|
|
namespace ams::fssystem {
|
|
|
|
constexpr inline size_t BufferPoolAlignment = 4_KB;
|
|
constexpr inline size_t BufferPoolWorkSize = 320;
|
|
|
|
class PooledBuffer {
|
|
NON_COPYABLE(PooledBuffer);
|
|
private:
|
|
char *buffer;
|
|
size_t size;
|
|
private:
|
|
static size_t GetAllocatableSizeMaxCore(bool large);
|
|
public:
|
|
static size_t GetAllocatableSizeMax() { return GetAllocatableSizeMaxCore(false); }
|
|
static size_t GetAllocatableParticularlyLargeSizeMax() { return GetAllocatableSizeMaxCore(true); }
|
|
private:
|
|
void Swap(PooledBuffer &rhs) {
|
|
std::swap(this->buffer, rhs.buffer);
|
|
std::swap(this->size, rhs.size);
|
|
}
|
|
public:
|
|
/* Constructor/Destructor. */
|
|
constexpr PooledBuffer() : buffer(), size() { /* ... */ }
|
|
|
|
PooledBuffer(size_t ideal_size, size_t required_size) : buffer(), size() {
|
|
this->Allocate(ideal_size, required_size);
|
|
}
|
|
|
|
~PooledBuffer() {
|
|
this->Deallocate();
|
|
}
|
|
|
|
/* Move and assignment. */
|
|
explicit PooledBuffer(PooledBuffer &&rhs) : buffer(rhs.buffer), size(rhs.size) {
|
|
rhs.buffer = nullptr;
|
|
rhs.size = 0;
|
|
}
|
|
|
|
PooledBuffer &operator=(PooledBuffer &&rhs) {
|
|
PooledBuffer(std::move(rhs)).Swap(*this);
|
|
return *this;
|
|
}
|
|
|
|
/* Allocation API. */
|
|
void Allocate(size_t ideal_size, size_t required_size) {
|
|
return this->AllocateCore(ideal_size, required_size, false);
|
|
}
|
|
|
|
void AllocateParticularlyLarge(size_t ideal_size, size_t required_size) {
|
|
return this->AllocateCore(ideal_size, required_size, true);
|
|
}
|
|
|
|
void Shrink(size_t ideal_size);
|
|
|
|
void Deallocate() {
|
|
/* Shrink the buffer to empty. */
|
|
this->Shrink(0);
|
|
AMS_ASSERT(this->buffer == nullptr);
|
|
}
|
|
|
|
char *GetBuffer() const {
|
|
AMS_ASSERT(this->buffer != nullptr);
|
|
return this->buffer;
|
|
}
|
|
|
|
size_t GetSize() const {
|
|
AMS_ASSERT(this->buffer != nullptr);
|
|
return this->size;
|
|
}
|
|
private:
|
|
void AllocateCore(size_t ideal_size, size_t required_size, bool large);
|
|
};
|
|
|
|
Result InitializeBufferPool(char *buffer, size_t size);
|
|
Result InitializeBufferPool(char *buffer, size_t size, char *work, size_t work_size);
|
|
|
|
bool IsPooledBuffer(const void *buffer);
|
|
|
|
size_t GetPooledBufferRetriedCount();
|
|
size_t GetPooledBufferReduceAllocationCount();
|
|
size_t GetPooledBufferFreeSizePeak();
|
|
|
|
void ClearPooledBufferPeak();
|
|
|
|
void RegisterAdditionalDeviceAddress(uintptr_t address, size_t size);
|
|
void UnregisterAdditionalDeviceAddress(uintptr_t address);
|
|
bool IsAdditionalDeviceAddress(const void *ptr);
|
|
|
|
inline bool IsDeviceAddress(const void *buffer) {
|
|
return IsPooledBuffer(buffer) || IsAdditionalDeviceAddress(buffer);
|
|
}
|
|
|
|
}
|