-
Notifications
You must be signed in to change notification settings - Fork 0
/
DeviceHeap.h
62 lines (47 loc) · 1.38 KB
/
DeviceHeap.h
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
59
60
61
62
#ifndef SRC_MEMORY_DEVICEHEAP_H_
#define SRC_MEMORY_DEVICEHEAP_H_
#include <memory>
#include <vector>
#include "AllocatedBlock.h"
#include "Allocator.h"
#include "MemoryAllocation.h"
#include "MemoryBlock.h"
#include "ReservedBlock.h"
#include "core/types.h"
class DeviceHeap {
friend ReservedBlock;
public:
DeviceHeap();
DeviceHeap(u64 initialAllocationSize, Allocator* allocator);
DeviceHeap(u64 initialAllocationSize, float enlargementFactor,
Allocator* allocator);
ReservedBlock ReserveMemory(const MemoryAllocation requestedAllocation);
private:
struct AllocationChain {
AllocatedBlock block;
std::unique_ptr<AllocationChain> next;
};
class AllocationList {
public:
AllocationChain* First();
void Add(const AllocatedBlock block);
void InsertAfter(AllocationChain* previous, const AllocatedBlock block);
void Remove(AllocationChain* block, AllocationChain* previous);
private:
std::unique_ptr<AllocationChain> first;
AllocationChain* last;
};
struct AllocatedMemory {
u64 allocationIndex;
AllocationList list;
std::unique_ptr<Allocator::MemoryObject> memory;
};
void Return(const AllocatedBlock block);
private:
u64 initialAllocationSize_;
float enlargementFactor_;
Allocator* allocator_;
u32 enlargementIndex_;
std::vector<AllocatedMemory> allocations_;
};
#endif // SRC_MEMORY_DEVICEHEAP_H_