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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 39 dequeue_pos_(buffer_) { | 39 dequeue_pos_(buffer_) { |
| 40 } | 40 } |
| 41 | 41 |
| 42 | 42 |
| 43 template<typename T, unsigned L> | 43 template<typename T, unsigned L> |
| 44 SamplingCircularQueue<T, L>::~SamplingCircularQueue() { | 44 SamplingCircularQueue<T, L>::~SamplingCircularQueue() { |
| 45 } | 45 } |
| 46 | 46 |
| 47 | 47 |
| 48 template<typename T, unsigned L> | 48 template<typename T, unsigned L> |
| 49 T* SamplingCircularQueue<T, L>::StartDequeue() { | 49 T* SamplingCircularQueue<T, L>::Peek() { |
| 50 MemoryBarrier(); | 50 MemoryBarrier(); |
| 51 if (Acquire_Load(&dequeue_pos_->marker) == kFull) { | 51 if (Acquire_Load(&dequeue_pos_->marker) == kFull) { |
| 52 return &dequeue_pos_->record; | 52 return &dequeue_pos_->record; |
| 53 } | 53 } |
| 54 return NULL; | 54 return NULL; |
| 55 } | 55 } |
| 56 | 56 |
| 57 | 57 |
| 58 template<typename T, unsigned L> | 58 template<typename T, unsigned L> |
| 59 void SamplingCircularQueue<T, L>::FinishDequeue() { | 59 void SamplingCircularQueue<T, L>::Remove() { |
| 60 Release_Store(&dequeue_pos_->marker, kEmpty); | 60 Release_Store(&dequeue_pos_->marker, kEmpty); |
| 61 dequeue_pos_ = Next(dequeue_pos_); | 61 dequeue_pos_ = Next(dequeue_pos_); |
| 62 } | 62 } |
| 63 | 63 |
| 64 | 64 |
| 65 template<typename T, unsigned L> | 65 template<typename T, unsigned L> |
| 66 T* SamplingCircularQueue<T, L>::StartEnqueue() { | 66 T* SamplingCircularQueue<T, L>::StartEnqueue() { |
| 67 MemoryBarrier(); | 67 MemoryBarrier(); |
| 68 if (Acquire_Load(&enqueue_pos_->marker) == kEmpty) { | 68 if (Acquire_Load(&enqueue_pos_->marker) == kEmpty) { |
| 69 return &enqueue_pos_->record; | 69 return &enqueue_pos_->record; |
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| 83 typename SamplingCircularQueue<T, L>::Entry* SamplingCircularQueue<T, L>::Next( | 83 typename SamplingCircularQueue<T, L>::Entry* SamplingCircularQueue<T, L>::Next( |
| 84 Entry* entry) { | 84 Entry* entry) { |
| 85 Entry* next = entry + 1; | 85 Entry* next = entry + 1; |
| 86 if (next == &buffer_[L]) return buffer_; | 86 if (next == &buffer_[L]) return buffer_; |
| 87 return next; | 87 return next; |
| 88 } | 88 } |
| 89 | 89 |
| 90 } } // namespace v8::internal | 90 } } // namespace v8::internal |
| 91 | 91 |
| 92 #endif // V8_CIRCULAR_QUEUE_INL_H_ | 92 #endif // V8_CIRCULAR_QUEUE_INL_H_ |
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