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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_LIBARTBASE_BASE_ARENA_BIT_VECTOR_H_
#define ART_LIBARTBASE_BASE_ARENA_BIT_VECTOR_H_
#include "arena_object.h"
#include "base/arena_allocator.h"
#include "bit_vector.h"
namespace art {
class ArenaAllocator;
class ScopedArenaAllocator;
/*
* A BitVector implementation that uses Arena allocation.
*/
class ArenaBitVector : public BitVector, public ArenaObject<kArenaAllocGrowableBitMap> {
public:
template <typename Allocator>
static ArenaBitVector* Create(Allocator* allocator,
uint32_t start_bits,
bool expandable,
ArenaAllocKind kind = kArenaAllocGrowableBitMap) {
void* storage = allocator->template Alloc<ArenaBitVector>(kind);
return new (storage) ArenaBitVector(allocator, start_bits, expandable, kind);
}
ArenaBitVector(ArenaAllocator* allocator,
uint32_t start_bits,
bool expandable,
ArenaAllocKind kind = kArenaAllocGrowableBitMap);
ArenaBitVector(ScopedArenaAllocator* allocator,
uint32_t start_bits,
bool expandable,
ArenaAllocKind kind = kArenaAllocGrowableBitMap);
~ArenaBitVector() {}
ArenaBitVector(ArenaBitVector&&) = default;
ArenaBitVector(const ArenaBitVector&) = delete;
};
// A BitVectorArray implementation that uses Arena allocation. See
// BitVectorArray for more information.
// This is a helper for dealing with 2d bit-vector arrays packed into a single
// bit-vector
class ArenaBitVectorArray final : public BaseBitVectorArray,
public ArenaObject<kArenaAllocGrowableBitMap> {
public:
ArenaBitVectorArray(const ArenaBitVectorArray& bv) = delete;
ArenaBitVectorArray& operator=(const ArenaBitVectorArray& other) = delete;
explicit ArenaBitVectorArray(ArenaBitVector&& bv) : BaseBitVectorArray(), data_(std::move(bv)) {}
ArenaBitVectorArray(ArenaBitVector&& bv, size_t cols)
: BaseBitVectorArray(BaseBitVectorArray::MaxRowsFor(bv, cols), cols), data_(std::move(bv)) {}
ArenaBitVectorArray(ArenaAllocator* allocator,
size_t start_rows,
size_t start_cols,
bool expandable,
ArenaAllocKind kind = kArenaAllocGrowableBitMap)
: BaseBitVectorArray(start_rows, start_cols),
data_(ArenaBitVector(allocator,
BaseBitVectorArray::RequiredBitVectorSize(start_rows, start_cols),
expandable,
kind)) {}
ArenaBitVectorArray(ScopedArenaAllocator* allocator,
size_t start_rows,
size_t start_cols,
bool expandable,
ArenaAllocKind kind = kArenaAllocGrowableBitMap)
: BaseBitVectorArray(start_rows, start_cols),
data_(ArenaBitVector(allocator,
BaseBitVectorArray::RequiredBitVectorSize(start_rows, start_cols),
expandable,
kind)) {}
~ArenaBitVectorArray() override {}
const BitVector& GetRawData() const override {
return data_;
}
BitVector& GetRawData() override {
return data_;
}
private:
ArenaBitVector data_;
};
} // namespace art
#endif // ART_LIBARTBASE_BASE_ARENA_BIT_VECTOR_H_
|
