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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * (C) 1999 Antti Koivisto (koivisto@kde.org) | 3 * (C) 1999 Antti Koivisto (koivisto@kde.org) |
4 * (C) 2001 Dirk Mueller ( mueller@kde.org ) | 4 * (C) 2001 Dirk Mueller ( mueller@kde.org ) |
5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserv
ed. | 5 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights |
| 6 * reserved. |
6 * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net) | 7 * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net) |
7 * | 8 * |
8 * This library is free software; you can redistribute it and/or | 9 * This library is free software; you can redistribute it and/or |
9 * modify it under the terms of the GNU Library General Public | 10 * modify it under the terms of the GNU Library General Public |
10 * License as published by the Free Software Foundation; either | 11 * License as published by the Free Software Foundation; either |
11 * version 2 of the License, or (at your option) any later version. | 12 * version 2 of the License, or (at your option) any later version. |
12 * | 13 * |
13 * This library is distributed in the hope that it will be useful, | 14 * This library is distributed in the hope that it will be useful, |
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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34 class CalculationValueHandleMap { | 35 class CalculationValueHandleMap { |
35 USING_FAST_MALLOC(CalculationValueHandleMap); | 36 USING_FAST_MALLOC(CalculationValueHandleMap); |
36 WTF_MAKE_NONCOPYABLE(CalculationValueHandleMap); | 37 WTF_MAKE_NONCOPYABLE(CalculationValueHandleMap); |
37 | 38 |
38 public: | 39 public: |
39 CalculationValueHandleMap() : m_index(1) {} | 40 CalculationValueHandleMap() : m_index(1) {} |
40 | 41 |
41 int insert(PassRefPtr<CalculationValue> calcValue) { | 42 int insert(PassRefPtr<CalculationValue> calcValue) { |
42 ASSERT(m_index); | 43 ASSERT(m_index); |
43 // FIXME calc(): https://bugs.webkit.org/show_bug.cgi?id=80489 | 44 // FIXME calc(): https://bugs.webkit.org/show_bug.cgi?id=80489 |
44 // This monotonically increasing handle generation scheme is potentially was
teful | 45 // This monotonically increasing handle generation scheme is potentially |
45 // of the handle space. Consider reusing empty handles. | 46 // wasteful of the handle space. Consider reusing empty handles. |
46 while (m_map.contains(m_index)) | 47 while (m_map.contains(m_index)) |
47 m_index++; | 48 m_index++; |
48 | 49 |
49 m_map.set(m_index, std::move(calcValue)); | 50 m_map.set(m_index, std::move(calcValue)); |
50 | 51 |
51 return m_index; | 52 return m_index; |
52 } | 53 } |
53 | 54 |
54 void remove(int index) { | 55 void remove(int index) { |
55 ASSERT(m_map.contains(index)); | 56 ASSERT(m_map.contains(index)); |
56 m_map.remove(index); | 57 m_map.remove(index); |
57 } | 58 } |
58 | 59 |
59 CalculationValue& get(int index) { | 60 CalculationValue& get(int index) { |
60 ASSERT(m_map.contains(index)); | 61 ASSERT(m_map.contains(index)); |
61 return *m_map.get(index); | 62 return *m_map.get(index); |
62 } | 63 } |
63 | 64 |
64 void decrementRef(int index) { | 65 void decrementRef(int index) { |
65 ASSERT(m_map.contains(index)); | 66 ASSERT(m_map.contains(index)); |
66 CalculationValue* value = m_map.get(index); | 67 CalculationValue* value = m_map.get(index); |
67 if (value->hasOneRef()) { | 68 if (value->hasOneRef()) { |
68 // Force the CalculationValue destructor early to avoid a potential recurs
ive call inside HashMap remove(). | 69 // Force the CalculationValue destructor early to avoid a potential |
| 70 // recursive call inside HashMap remove(). |
69 m_map.set(index, nullptr); | 71 m_map.set(index, nullptr); |
70 m_map.remove(index); | 72 m_map.remove(index); |
71 } else { | 73 } else { |
72 value->deref(); | 74 value->deref(); |
73 } | 75 } |
74 } | 76 } |
75 | 77 |
76 private: | 78 private: |
77 int m_index; | 79 int m_index; |
78 HashMap<int, RefPtr<CalculationValue>> m_map; | 80 HashMap<int, RefPtr<CalculationValue>> m_map; |
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173 } | 175 } |
174 | 176 |
175 struct SameSizeAsLength { | 177 struct SameSizeAsLength { |
176 int32_t value; | 178 int32_t value; |
177 int32_t metaData; | 179 int32_t metaData; |
178 }; | 180 }; |
179 static_assert(sizeof(Length) == sizeof(SameSizeAsLength), | 181 static_assert(sizeof(Length) == sizeof(SameSizeAsLength), |
180 "length should stay small"); | 182 "length should stay small"); |
181 | 183 |
182 } // namespace blink | 184 } // namespace blink |
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