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
|
/*
* Copyright (C) 2016 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 LIBMEMUNREACHABLE_LEAK_FOLDING_H_
#define LIBMEMUNREACHABLE_LEAK_FOLDING_H_
#include "HeapWalker.h"
namespace android {
class LeakFolding {
public:
LeakFolding(Allocator<void> allocator, HeapWalker& heap_walker)
: allocator_(allocator),
heap_walker_(heap_walker),
leak_map_(allocator),
leak_graph_(allocator),
leak_scc_(allocator) {}
bool FoldLeaks();
struct Leak {
const Range range;
size_t referenced_count;
size_t referenced_size;
};
bool Leaked(allocator::vector<Leak>& leaked, size_t* num_leaks_out, size_t* leak_bytes_out);
private:
DISALLOW_COPY_AND_ASSIGN(LeakFolding);
Allocator<void> allocator_;
HeapWalker& heap_walker_;
struct SCCInfo {
public:
Node<SCCInfo> node;
size_t count;
size_t size;
size_t cuumulative_count;
size_t cuumulative_size;
bool dominator;
SCCInfo* accumulator;
explicit SCCInfo(Allocator<SCCInfo> allocator)
: node(this, allocator),
count(0),
size(0),
cuumulative_count(0),
cuumulative_size(0),
dominator(false),
accumulator(nullptr) {}
private:
SCCInfo(SCCInfo&&) = delete;
DISALLOW_COPY_AND_ASSIGN(SCCInfo);
};
struct LeakInfo {
public:
Node<LeakInfo> node;
const Range range;
SCCInfo* scc;
LeakInfo(const Range& range, Allocator<LeakInfo> allocator)
: node(this, allocator), range(range), scc(nullptr) {}
private:
DISALLOW_COPY_AND_ASSIGN(LeakInfo);
};
void ComputeDAG();
void AccumulateLeaks(SCCInfo* dominator);
allocator::map<Range, LeakInfo, compare_range> leak_map_;
Graph<LeakInfo> leak_graph_;
allocator::vector<Allocator<SCCInfo>::unique_ptr> leak_scc_;
};
} // namespace android
#endif // LIBMEMUNREACHABLE_LEAK_FOLDING_H_
|
