Line data Source code
1 : // Copyright 2011 the V8 project authors. All rights reserved.
2 : // Use of this source code is governed by a BSD-style license that can be
3 : // found in the LICENSE file.
4 :
5 : #ifndef V8_PROFILER_CIRCULAR_QUEUE_INL_H_
6 : #define V8_PROFILER_CIRCULAR_QUEUE_INL_H_
7 :
8 : #include "src/profiler/circular-queue.h"
9 :
10 : namespace v8 {
11 : namespace internal {
12 :
13 : template<typename T, unsigned L>
14 : SamplingCircularQueue<T, L>::SamplingCircularQueue()
15 : : enqueue_pos_(buffer_),
16 165990 : dequeue_pos_(buffer_) {
17 : }
18 :
19 :
20 : template<typename T, unsigned L>
21 : SamplingCircularQueue<T, L>::~SamplingCircularQueue() {
22 : }
23 :
24 :
25 : template<typename T, unsigned L>
26 869572 : T* SamplingCircularQueue<T, L>::Peek() {
27 : base::MemoryBarrier();
28 1739144 : if (base::Acquire_Load(&dequeue_pos_->marker) == kFull) {
29 291939 : return &dequeue_pos_->record;
30 : }
31 : return NULL;
32 : }
33 :
34 :
35 : template<typename T, unsigned L>
36 231866 : void SamplingCircularQueue<T, L>::Remove() {
37 231866 : base::Release_Store(&dequeue_pos_->marker, kEmpty);
38 463732 : dequeue_pos_ = Next(dequeue_pos_);
39 231866 : }
40 :
41 :
42 : template<typename T, unsigned L>
43 232021 : T* SamplingCircularQueue<T, L>::StartEnqueue() {
44 : base::MemoryBarrier();
45 464042 : if (base::Acquire_Load(&enqueue_pos_->marker) == kEmpty) {
46 232021 : return &enqueue_pos_->record;
47 : }
48 : return NULL;
49 : }
50 :
51 :
52 : template<typename T, unsigned L>
53 232021 : void SamplingCircularQueue<T, L>::FinishEnqueue() {
54 232021 : base::Release_Store(&enqueue_pos_->marker, kFull);
55 464042 : enqueue_pos_ = Next(enqueue_pos_);
56 232021 : }
57 :
58 :
59 : template<typename T, unsigned L>
60 : typename SamplingCircularQueue<T, L>::Entry* SamplingCircularQueue<T, L>::Next(
61 : Entry* entry) {
62 463887 : Entry* next = entry + 1;
63 463887 : if (next == &buffer_[L]) return buffer_;
64 : return next;
65 : }
66 :
67 : } // namespace internal
68 : } // namespace v8
69 :
70 : #endif // V8_PROFILER_CIRCULAR_QUEUE_INL_H_
|