Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(311)

Side by Side Diff: runtime/vm/ring_buffer.h

Issue 2481873005: clang-format runtime/vm (Closed)
Patch Set: Merge Created 4 years, 1 month ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch
« no previous file with comments | « runtime/vm/reusable_handles.h ('k') | runtime/vm/runtime_entry.h » ('j') | no next file with comments »
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #ifndef RUNTIME_VM_RING_BUFFER_H_ 5 #ifndef RUNTIME_VM_RING_BUFFER_H_
6 #define RUNTIME_VM_RING_BUFFER_H_ 6 #define RUNTIME_VM_RING_BUFFER_H_
7 7
8 #include "platform/assert.h" 8 #include "platform/assert.h"
9 #include "platform/utils.h" 9 #include "platform/utils.h"
10 10
11 namespace dart { 11 namespace dart {
12 12
13 // Fixed-capacity ring buffer. 13 // Fixed-capacity ring buffer.
14 template<typename T, int N> 14 template <typename T, int N>
15 class RingBuffer { 15 class RingBuffer {
16 public: 16 public:
17 RingBuffer() : count_(0) { } 17 RingBuffer() : count_(0) {}
18 18
19 void Add(const T& t) { 19 void Add(const T& t) { data_[count_++ & kMask] = t; }
20 data_[count_++ & kMask] = t;
21 }
22 20
23 // Returns the i'th most recently added element. Requires 0 <= i < Size(). 21 // Returns the i'th most recently added element. Requires 0 <= i < Size().
24 const T& Get(int i) const { 22 const T& Get(int i) const {
25 ASSERT(0 <= i && i < Size()); 23 ASSERT(0 <= i && i < Size());
26 return data_[(count_ - i - 1) & kMask]; 24 return data_[(count_ - i - 1) & kMask];
27 } 25 }
28 26
29 // Returns the number of elements currently stored in this buffer (at most N). 27 // Returns the number of elements currently stored in this buffer (at most N).
30 int64_t Size() const { 28 int64_t Size() const {
31 return Utils::Minimum(count_, static_cast<int64_t>(N)); 29 return Utils::Minimum(count_, static_cast<int64_t>(N));
32 } 30 }
33 31
34 private: 32 private:
35 static const int kMask = N - 1; 33 static const int kMask = N - 1;
36 COMPILE_ASSERT((N & kMask) == 0); 34 COMPILE_ASSERT((N & kMask) == 0);
37 T data_[N]; 35 T data_[N];
38 int64_t count_; 36 int64_t count_;
39 }; 37 };
40 38
41 } // namespace dart 39 } // namespace dart
42 40
43 #endif // RUNTIME_VM_RING_BUFFER_H_ 41 #endif // RUNTIME_VM_RING_BUFFER_H_
OLDNEW
« no previous file with comments | « runtime/vm/reusable_handles.h ('k') | runtime/vm/runtime_entry.h » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698