blob: 937bfeef6d608b59e106cf2faf649989680ba427 (
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
59
60
61
|
#pragma once
#include "chunked_memory_pool.h"
#include <cstddef>
#include <type_traits>
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
// Made to use TChunkedMemoryPool with std containers.
// Does not own pool so lifetime should be no greater than lifetime of the pool.
// Redirects allocations to pool.
// Deallocations are noop.
template <class T>
class TChunkedMemoryPoolAllocator
{
public:
using value_type = T;
// All defines for AllocatorAwareContainer are deliberately set to the same as default.
using is_always_equal = std::false_type;
using propagate_on_container_copy_assignment = std::false_type;
using propagate_on_container_move_assignment = std::false_type;
using propagate_on_container_swap = std::false_type;
static TChunkedMemoryPoolAllocator select_on_container_copy_construction(
const TChunkedMemoryPoolAllocator& allocator) noexcept;
explicit TChunkedMemoryPoolAllocator(TChunkedMemoryPool* pool) noexcept;
template <class U>
TChunkedMemoryPoolAllocator(const TChunkedMemoryPoolAllocator<U>& other) noexcept;
[[nodiscard]] T* allocate(std::size_t count);
void deallocate(T* pointer, std::size_t count) const noexcept;
// https://en.cppreference.com/w/cpp/named_req/Allocator
// a1 == a2
// * true only if the storage allocated by the allocator a1 can be deallocated through a2.
// * Establishes reflexive, symmetric, and transitive relationship.
// * Does not throw exceptions.
bool operator==(const TChunkedMemoryPoolAllocator& other) const noexcept;
bool operator!=(const TChunkedMemoryPoolAllocator& other) const noexcept;
private:
template <class U>
friend class TChunkedMemoryPoolAllocator;
TChunkedMemoryPool* const Pool_;
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
#define CHUNKED_MEMORY_POOL_ALLOCATOR_INL_H_
#include "chunked_memory_pool_allocator-inl.h"
#undef CHUNKED_MEMORY_POOL_ALLOCATOR_INL_H_
|
