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Side by Side Diff: third_party/WebKit/Source/wtf/Optional.h

Issue 1845923005: CL for perf tryjob on android Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 8 months ago
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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 Optional_h 5 #ifndef Optional_h
6 #define Optional_h 6 #define Optional_h
7 7
8 #include "wtf/Alignment.h" 8 #include "wtf/Alignment.h"
9 #include "wtf/Allocator.h" 9 #include "wtf/Allocator.h"
10 #include "wtf/Assertions.h" 10 #include "wtf/Assertions.h"
(...skipping 36 matching lines...) Expand 10 before | Expand all | Expand 10 after
47 operator UnspecifiedBoolType() const { return m_ptr ? &Optional::m_ptr : nul lptr; } 47 operator UnspecifiedBoolType() const { return m_ptr ? &Optional::m_ptr : nul lptr; }
48 48
49 T& operator*() { ASSERT_WITH_SECURITY_IMPLICATION(m_ptr); return *m_ptr; } 49 T& operator*() { ASSERT_WITH_SECURITY_IMPLICATION(m_ptr); return *m_ptr; }
50 const T& operator*() const { ASSERT_WITH_SECURITY_IMPLICATION(m_ptr); return *m_ptr; } 50 const T& operator*() const { ASSERT_WITH_SECURITY_IMPLICATION(m_ptr); return *m_ptr; }
51 T* operator->() { ASSERT_WITH_SECURITY_IMPLICATION(m_ptr); return m_ptr; } 51 T* operator->() { ASSERT_WITH_SECURITY_IMPLICATION(m_ptr); return m_ptr; }
52 const T* operator->() const { ASSERT_WITH_SECURITY_IMPLICATION(m_ptr); retur n m_ptr; } 52 const T* operator->() const { ASSERT_WITH_SECURITY_IMPLICATION(m_ptr); retur n m_ptr; }
53 53
54 template <typename... Args> 54 template <typename... Args>
55 void emplace(Args&&... args) 55 void emplace(Args&&... args)
56 { 56 {
57 CHECK(!m_ptr); 57 RELEASE_ASSERT(!m_ptr);
58 m_ptr = reinterpret_cast_ptr<T*>(&m_storage.buffer); 58 m_ptr = reinterpret_cast_ptr<T*>(&m_storage.buffer);
59 new (m_ptr) T(std::forward<Args>(args)...); 59 new (m_ptr) T(std::forward<Args>(args)...);
60 } 60 }
61 61
62 private: 62 private:
63 T* m_ptr; 63 T* m_ptr;
64 AlignedBuffer<sizeof(T), WTF_ALIGN_OF(T)> m_storage; 64 AlignedBuffer<sizeof(T), WTF_ALIGN_OF(T)> m_storage;
65 }; 65 };
66 66
67 } // namespace WTF 67 } // namespace WTF
68 68
69 using WTF::Optional; 69 using WTF::Optional;
70 70
71 #endif // Optional_h 71 #endif // Optional_h
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