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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef COURGETTE_LABEL_MANAGER_H_ | 5 #ifndef COURGETTE_LABEL_MANAGER_H_ |
6 #define COURGETTE_LABEL_MANAGER_H_ | 6 #define COURGETTE_LABEL_MANAGER_H_ |
7 | 7 |
| 8 #include <stddef.h> |
| 9 #include <stdint.h> |
| 10 |
8 #include <vector> | 11 #include <vector> |
9 | 12 |
10 #include "base/macros.h" | 13 #include "base/macros.h" |
11 #include "courgette/image_utils.h" | 14 #include "courgette/image_utils.h" |
12 | 15 |
13 namespace courgette { | 16 namespace courgette { |
14 | 17 |
15 // A container to store and manage Label instances. A key consideration is peak | 18 // A container to store and manage Label instances. A key consideration is peak |
16 // memory usage reduction. To this end we preallocate Label instances in bulk, | 19 // memory usage reduction. To this end we preallocate Label instances in bulk, |
17 // and carefully control transient memory usage when initializing Labels. | 20 // and carefully control transient memory usage when initializing Labels. |
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36 | 39 |
37 LabelManager(); | 40 LabelManager(); |
38 virtual ~LabelManager(); | 41 virtual ~LabelManager(); |
39 | 42 |
40 // Initializes |labels_| using RVAs from |rva_visitor|. Each distinct RVA from | 43 // Initializes |labels_| using RVAs from |rva_visitor|. Each distinct RVA from |
41 // |rva_visitor| yields a Label with |rva_| assigned as the RVA, and |count_| | 44 // |rva_visitor| yields a Label with |rva_| assigned as the RVA, and |count_| |
42 // assigned as the repeat. | 45 // assigned as the repeat. |
43 void Read(RvaVisitor* rva_visitor); | 46 void Read(RvaVisitor* rva_visitor); |
44 | 47 |
45 // Removes |labels_| elements whose |count_| is less than |count_threshold|. | 48 // Removes |labels_| elements whose |count_| is less than |count_threshold|. |
46 void RemoveUnderusedLabels(int32 count_threshold); | 49 void RemoveUnderusedLabels(int32_t count_threshold); |
47 | 50 |
48 // Efficiently searches for a Label that targets |rva|. Returns the pointer to | 51 // Efficiently searches for a Label that targets |rva|. Returns the pointer to |
49 // the stored Label instance if found, or null otherwise. | 52 // the stored Label instance if found, or null otherwise. |
50 Label* Find(RVA rva); | 53 Label* Find(RVA rva); |
51 | 54 |
52 // TODO(huangs): Move AssignRemainingIndexes() here. | 55 // TODO(huangs): Move AssignRemainingIndexes() here. |
53 | 56 |
54 protected: | 57 protected: |
55 // The main list of Label instances, sorted by the |rva_| member. | 58 // The main list of Label instances, sorted by the |rva_| member. |
56 std::vector<Label> labels_; | 59 std::vector<Label> labels_; |
57 | 60 |
58 private: | 61 private: |
59 DISALLOW_COPY_AND_ASSIGN(LabelManager); | 62 DISALLOW_COPY_AND_ASSIGN(LabelManager); |
60 }; | 63 }; |
61 | 64 |
62 } // namespace courgette | 65 } // namespace courgette |
63 | 66 |
64 #endif // COURGETTE_LABEL_MANAGER_H_ | 67 #endif // COURGETTE_LABEL_MANAGER_H_ |
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