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
22 namespace art {
23 namespace gc {
24 namespace accounting {
25
ReplaceBitmap(ContinuousSpaceBitmap * old_bitmap,ContinuousSpaceBitmap * new_bitmap)26 void 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
ReplaceLargeObjectBitmap(LargeObjectBitmap * old_bitmap,LargeObjectBitmap * new_bitmap)35 void 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
AddContinuousSpaceBitmap(accounting::ContinuousSpaceBitmap * bitmap)43 void 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
RemoveContinuousSpaceBitmap(accounting::ContinuousSpaceBitmap * bitmap)55 void 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
AddLargeObjectBitmap(LargeObjectBitmap * bitmap)62 void HeapBitmap::AddLargeObjectBitmap(LargeObjectBitmap* bitmap) {
63 DCHECK(bitmap != nullptr);
64 large_object_bitmaps_.push_back(bitmap);
65 }
66
RemoveLargeObjectBitmap(LargeObjectBitmap * bitmap)67 void 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
Walk(ObjectCallback * callback,void * arg)74 void 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