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Side by Side Diff: src/base/atomic-utils.h

Issue 2190333002: Teach compiler jobs how to actually parse (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 4 months ago
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1 // Copyright 2015 the V8 project authors. All rights reserved. 1 // Copyright 2015 the V8 project 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 V8_ATOMIC_UTILS_H_ 5 #ifndef V8_ATOMIC_UTILS_H_
6 #define V8_ATOMIC_UTILS_H_ 6 #define V8_ATOMIC_UTILS_H_
7 7
8 #include <limits.h> 8 #include <limits.h>
9 9
10 #include "src/base/atomicops.h" 10 #include "src/base/atomicops.h"
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45 45
46 // Flag using T atomically. Also accepts void* as T. 46 // Flag using T atomically. Also accepts void* as T.
47 template <typename T> 47 template <typename T>
48 class AtomicValue { 48 class AtomicValue {
49 public: 49 public:
50 AtomicValue() : value_(0) {} 50 AtomicValue() : value_(0) {}
51 51
52 explicit AtomicValue(T initial) 52 explicit AtomicValue(T initial)
53 : value_(cast_helper<T>::to_storage_type(initial)) {} 53 : value_(cast_helper<T>::to_storage_type(initial)) {}
54 54
55 V8_INLINE T Value() { 55 V8_INLINE T Value() const {
56 return cast_helper<T>::to_return_type(base::Acquire_Load(&value_)); 56 return cast_helper<T>::to_return_type(base::Acquire_Load(&value_));
57 } 57 }
58 58
59 V8_INLINE bool TrySetValue(T old_value, T new_value) { 59 V8_INLINE bool TrySetValue(T old_value, T new_value) {
60 return base::Release_CompareAndSwap( 60 return base::Release_CompareAndSwap(
61 &value_, cast_helper<T>::to_storage_type(old_value), 61 &value_, cast_helper<T>::to_storage_type(old_value),
62 cast_helper<T>::to_storage_type(new_value)) == 62 cast_helper<T>::to_storage_type(new_value)) ==
63 cast_helper<T>::to_storage_type(old_value); 63 cast_helper<T>::to_storage_type(old_value);
64 } 64 }
65 65
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166 return static_cast<base::AtomicWord>(1) << element; 166 return static_cast<base::AtomicWord>(1) << element;
167 } 167 }
168 168
169 base::AtomicWord bits_; 169 base::AtomicWord bits_;
170 }; 170 };
171 171
172 } // namespace base 172 } // namespace base
173 } // namespace v8 173 } // namespace v8
174 174
175 #endif // #define V8_ATOMIC_UTILS_H_ 175 #endif // #define V8_ATOMIC_UTILS_H_
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