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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #ifndef RUNTIME_VM_BITMAP_H_ | 5 #ifndef RUNTIME_VM_BITMAP_H_ |
6 #define RUNTIME_VM_BITMAP_H_ | 6 #define RUNTIME_VM_BITMAP_H_ |
7 | 7 |
8 #include "vm/allocation.h" | 8 #include "vm/allocation.h" |
9 #include "vm/isolate.h" | 9 #include "vm/isolate.h" |
10 #include "vm/zone.h" | 10 #include "vm/zone.h" |
11 | 11 |
12 namespace dart { | 12 namespace dart { |
13 | 13 |
14 // Forward declarations. | 14 // Forward declarations. |
15 class RawStackmap; | 15 class RawStackMap; |
16 class Stackmap; | 16 class StackMap; |
17 | 17 |
18 | 18 |
19 // BitmapBuilder is used to build a bitmap. The implementation is optimized | 19 // BitmapBuilder is used to build a bitmap. The implementation is optimized |
20 // for a dense set of small bit maps without a fixed upper bound (e.g: a | 20 // for a dense set of small bit maps without a fixed upper bound (e.g: a |
21 // pointer map description of a stack). | 21 // pointer map description of a stack). |
22 class BitmapBuilder : public ZoneAllocated { | 22 class BitmapBuilder : public ZoneAllocated { |
23 public: | 23 public: |
24 BitmapBuilder() | 24 BitmapBuilder() |
25 : length_(0), | 25 : length_(0), |
26 data_size_in_bytes_(kInitialSizeInBytes), | 26 data_size_in_bytes_(kInitialSizeInBytes), |
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72 // (up to length_) is allowed and they are assumed to be false. | 72 // (up to length_) is allowed and they are assumed to be false. |
73 intptr_t data_size_in_bytes_; | 73 intptr_t data_size_in_bytes_; |
74 uint8_t* data_; | 74 uint8_t* data_; |
75 | 75 |
76 DISALLOW_COPY_AND_ASSIGN(BitmapBuilder); | 76 DISALLOW_COPY_AND_ASSIGN(BitmapBuilder); |
77 }; | 77 }; |
78 | 78 |
79 } // namespace dart | 79 } // namespace dart |
80 | 80 |
81 #endif // RUNTIME_VM_BITMAP_H_ | 81 #endif // RUNTIME_VM_BITMAP_H_ |
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