59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
|
// Copyright 2020 yuzu Emulator Project
|
||
|
|
// Licensed under GPLv2 or any later version
|
||
|
|
// Refer to the license.txt file included.
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include "common/common_funcs.h"
|
||
|
|
|
||
|
|
namespace Common {
|
||
|
|
|
||
|
|
void* AllocateMemoryPages(std::size_t size);
|
||
|
|
void FreeMemoryPages(void* base, std::size_t size);
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
class VirtualBuffer final : NonCopyable {
|
||
|
|
public:
|
||
|
|
constexpr VirtualBuffer() = default;
|
||
|
|
explicit VirtualBuffer(std::size_t count) : alloc_size{count * sizeof(T)} {
|
||
|
|
base_ptr = reinterpret_cast<T*>(AllocateMemoryPages(alloc_size));
|
||
|
|
}
|
||
|
|
|
||
|
|
~VirtualBuffer() {
|
||
|
|
FreeMemoryPages(base_ptr, alloc_size);
|
||
|
|
}
|
||
|
|
|
||
|
|
void resize(std::size_t count) {
|
||
|
|
FreeMemoryPages(base_ptr, alloc_size);
|
||
|
|
|
||
|
|
alloc_size = count * sizeof(T);
|
||
|
|
base_ptr = reinterpret_cast<T*>(AllocateMemoryPages(alloc_size));
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr const T& operator[](std::size_t index) const {
|
||
|
|
return base_ptr[index];
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr T& operator[](std::size_t index) {
|
||
|
|
return base_ptr[index];
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr T* data() {
|
||
|
|
return base_ptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr const T* data() const {
|
||
|
|
return base_ptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
constexpr std::size_t size() const {
|
||
|
|
return alloc_size / sizeof(T);
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
std::size_t alloc_size{};
|
||
|
|
T* base_ptr{};
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace Common
|