blob: da064e59e12bd59523c09ce2952b921426c6e54b (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
// 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
|
