1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "heap_bitmap.h"
18
19#include "gc/accounting/space_bitmap-inl.h"
20#include "gc/space/space.h"
21
22namespace art {
23namespace gc {
24namespace accounting {
25
26void HeapBitmap::ReplaceBitmap(ContinuousSpaceBitmap* old_bitmap,
27                               ContinuousSpaceBitmap* new_bitmap) {
28  auto it = std::find(continuous_space_bitmaps_.begin(), continuous_space_bitmaps_.end(),
29                      old_bitmap);
30  CHECK(it != continuous_space_bitmaps_.end()) << " continuous space bitmap " << old_bitmap
31      << " not found";
32  *it = new_bitmap;
33}
34
35void HeapBitmap::ReplaceLargeObjectBitmap(LargeObjectBitmap* old_bitmap,
36                                          LargeObjectBitmap* new_bitmap) {
37  auto it = std::find(large_object_bitmaps_.begin(), large_object_bitmaps_.end(), old_bitmap);
38  CHECK(it != large_object_bitmaps_.end()) << " large object bitmap " << old_bitmap
39      << " not found";
40  *it = new_bitmap;
41}
42
43void HeapBitmap::AddContinuousSpaceBitmap(accounting::ContinuousSpaceBitmap* bitmap) {
44  DCHECK(bitmap != nullptr);
45  // Check that there is no bitmap overlap.
46  for (const auto& cur_bitmap : continuous_space_bitmaps_) {
47    CHECK(bitmap->HeapBegin() >= cur_bitmap->HeapLimit() ||
48          bitmap->HeapLimit() <= cur_bitmap->HeapBegin())
49              << "Bitmap " << bitmap->Dump() << " overlaps with existing bitmap "
50              << cur_bitmap->Dump();
51  }
52  continuous_space_bitmaps_.push_back(bitmap);
53}
54
55void HeapBitmap::RemoveContinuousSpaceBitmap(accounting::ContinuousSpaceBitmap* bitmap) {
56  DCHECK(bitmap != nullptr);
57  auto it = std::find(continuous_space_bitmaps_.begin(), continuous_space_bitmaps_.end(), bitmap);
58  DCHECK(it != continuous_space_bitmaps_.end());
59  continuous_space_bitmaps_.erase(it);
60}
61
62void HeapBitmap::AddLargeObjectBitmap(LargeObjectBitmap* bitmap) {
63  DCHECK(bitmap != nullptr);
64  large_object_bitmaps_.push_back(bitmap);
65}
66
67void HeapBitmap::RemoveLargeObjectBitmap(LargeObjectBitmap* bitmap) {
68  DCHECK(bitmap != nullptr);
69  auto it = std::find(large_object_bitmaps_.begin(), large_object_bitmaps_.end(), bitmap);
70  DCHECK(it != large_object_bitmaps_.end());
71  large_object_bitmaps_.erase(it);
72}
73
74void HeapBitmap::Walk(ObjectCallback* callback, void* arg) {
75  for (const auto& bitmap : continuous_space_bitmaps_) {
76    bitmap->Walk(callback, arg);
77  }
78  for (const auto& bitmap : large_object_bitmaps_) {
79    bitmap->Walk(callback, arg);
80  }
81}
82
83}  // namespace accounting
84}  // namespace gc
85}  // namespace art
86