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Side by Side Diff: third_party/WebKit/Source/core/layout/HitTestCache.h

Issue 1852663002: Oilpan: Remove WillBe types (part 9) (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 8 months ago
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1 // Copyright (c) 2015 The Chromium Authors. All rights reserved. 1 // Copyright (c) 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 HitTestCache_h 5 #ifndef HitTestCache_h
6 #define HitTestCache_h 6 #define HitTestCache_h
7 7
8 #include "core/CoreExport.h" 8 #include "core/CoreExport.h"
9 #include "core/layout/HitTestResult.h" 9 #include "core/layout/HitTestResult.h"
10 #include "platform/heap/Handle.h" 10 #include "platform/heap/Handle.h"
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27 // Some of the related design, motivation can be found in: 27 // Some of the related design, motivation can be found in:
28 // https://docs.google.com/document/d/1b0NYAD4S9BJIpHGa4JD2HLmW28f2rUh1jlqrgpU3z VU/ 28 // https://docs.google.com/document/d/1b0NYAD4S9BJIpHGa4JD2HLmW28f2rUh1jlqrgpU3z VU/
29 // 29 //
30 30
31 // A cache size of 2 is used because it is relatively cheap to store; 31 // A cache size of 2 is used because it is relatively cheap to store;
32 // and the ping-pong behaviour of some of the HitTestRequest flags during 32 // and the ping-pong behaviour of some of the HitTestRequest flags during
33 // Mouse/Touch/Pointer events can generate increased cache misses with 33 // Mouse/Touch/Pointer events can generate increased cache misses with
34 // size of 1. 34 // size of 1.
35 #define HIT_TEST_CACHE_SIZE (2) 35 #define HIT_TEST_CACHE_SIZE (2)
36 36
37 class CORE_EXPORT HitTestCache final : public NoBaseWillBeGarbageCollectedFinali zed<HitTestCache> { 37 class CORE_EXPORT HitTestCache final : public GarbageCollectedFinalized<HitTestC ache> {
38 USING_FAST_MALLOC_WILL_BE_REMOVED(HitTestCache);
39 WTF_MAKE_NONCOPYABLE(HitTestCache); 38 WTF_MAKE_NONCOPYABLE(HitTestCache);
40 public: 39 public:
41 static PassOwnPtrWillBeRawPtr<HitTestCache> create() 40 static RawPtr<HitTestCache> create()
42 { 41 {
43 return adoptPtrWillBeNoop(new HitTestCache); 42 return adoptPtrWillBeNoop(new HitTestCache);
44 } 43 }
45 44
46 // Check the cache for a possible hit and update |result| if 45 // Check the cache for a possible hit and update |result| if
47 // hit encountered; returning true. Otherwise false. 46 // hit encountered; returning true. Otherwise false.
48 bool lookupCachedResult(HitTestResult&, uint64_t domTreeVersion); 47 bool lookupCachedResult(HitTestResult&, uint64_t domTreeVersion);
49 48
50 void clear(); 49 void clear();
51 50
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69 enum class HitHistogramMetric { 68 enum class HitHistogramMetric {
70 MISS, // Miss, not found in cache. 69 MISS, // Miss, not found in cache.
71 MISS_EXPLICIT_AVOID, // Miss, callee asked to explicitly avoid cache. 70 MISS_EXPLICIT_AVOID, // Miss, callee asked to explicitly avoid cache.
72 MISS_VALIDITY_RECT_MATCHES, // Miss, validity region matches, type doesn 't. 71 MISS_VALIDITY_RECT_MATCHES, // Miss, validity region matches, type doesn 't.
73 HIT_EXACT_MATCH, // Hit, exact point matches. 72 HIT_EXACT_MATCH, // Hit, exact point matches.
74 HIT_REGION_MATCH, // Hit, validity region matches. 73 HIT_REGION_MATCH, // Hit, validity region matches.
75 MAX_HIT_METRIC = HIT_REGION_MATCH, 74 MAX_HIT_METRIC = HIT_REGION_MATCH,
76 }; 75 };
77 76
78 unsigned m_updateIndex; 77 unsigned m_updateIndex;
79 WillBeHeapVector<HitTestResult, HIT_TEST_CACHE_SIZE> m_items; 78 HeapVector<HitTestResult, HIT_TEST_CACHE_SIZE> m_items;
80 uint64_t m_domTreeVersion; 79 uint64_t m_domTreeVersion;
81 }; 80 };
82 81
83 } // namespace blink 82 } // namespace blink
84 83
85 #endif // HitTestCache_h 84 #endif // HitTestCache_h
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