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Side by Side Diff: net/tools/flip_server/ring_buffer.h

Issue 623213004: replace OVERRIDE and FINAL with override and final in net/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: undo unwanted change in comment Created 6 years, 2 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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 NET_TOOLS_FLIP_SERVER_RING_BUFFER_H__ 5 #ifndef NET_TOOLS_FLIP_SERVER_RING_BUFFER_H__
6 #define NET_TOOLS_FLIP_SERVER_RING_BUFFER_H__ 6 #define NET_TOOLS_FLIP_SERVER_RING_BUFFER_H__
7 7
8 #include "base/compiler_specific.h" 8 #include "base/compiler_specific.h"
9 #include "base/memory/scoped_ptr.h" 9 #include "base/memory/scoped_ptr.h"
10 #include "net/tools/balsa/buffer_interface.h" 10 #include "net/tools/balsa/buffer_interface.h"
(...skipping 20 matching lines...) Expand all
31 // Resize the buffer to the size specified here. If the buffer_size passed 31 // Resize the buffer to the size specified here. If the buffer_size passed
32 // in here is smaller than the amount of data in the buffer, then the oldest 32 // in here is smaller than the amount of data in the buffer, then the oldest
33 // data will be dropped, but all other data will be saved. 33 // data will be dropped, but all other data will be saved.
34 // This means: If the buffer size is increasing, all data that was resident 34 // This means: If the buffer size is increasing, all data that was resident
35 // in the buffer prior to this call will be resident after this call. 35 // in the buffer prior to this call will be resident after this call.
36 void Resize(int buffer_size); 36 void Resize(int buffer_size);
37 37
38 // The following functions all override pure virtual functions 38 // The following functions all override pure virtual functions
39 // in BufferInterface. See buffer_interface.h for a description 39 // in BufferInterface. See buffer_interface.h for a description
40 // of what they do if the function isn't documented here. 40 // of what they do if the function isn't documented here.
41 virtual int ReadableBytes() const OVERRIDE; 41 virtual int ReadableBytes() const override;
42 virtual int BufferSize() const OVERRIDE; 42 virtual int BufferSize() const override;
43 virtual int BytesFree() const OVERRIDE; 43 virtual int BytesFree() const override;
44 44
45 virtual bool Empty() const OVERRIDE; 45 virtual bool Empty() const override;
46 virtual bool Full() const OVERRIDE; 46 virtual bool Full() const override;
47 47
48 // returns the number of characters written. 48 // returns the number of characters written.
49 // appends up-to-'size' bytes to the ringbuffer. 49 // appends up-to-'size' bytes to the ringbuffer.
50 virtual int Write(const char* bytes, int size) OVERRIDE; 50 virtual int Write(const char* bytes, int size) override;
51 51
52 // Stores a pointer into the ring buffer in *ptr, and stores the number of 52 // Stores a pointer into the ring buffer in *ptr, and stores the number of
53 // characters which are allowed to be written in *size. 53 // characters which are allowed to be written in *size.
54 // If there are no writable bytes available, then *size will contain 0. 54 // If there are no writable bytes available, then *size will contain 0.
55 virtual void GetWritablePtr(char** ptr, int* size) const OVERRIDE; 55 virtual void GetWritablePtr(char** ptr, int* size) const override;
56 56
57 // Stores a pointer into the ring buffer in *ptr, and stores the number of 57 // Stores a pointer into the ring buffer in *ptr, and stores the number of
58 // characters which are allowed to be read in *size. 58 // characters which are allowed to be read in *size.
59 // If there are no readable bytes available, then *size will contain 0. 59 // If there are no readable bytes available, then *size will contain 0.
60 virtual void GetReadablePtr(char** ptr, int* size) const OVERRIDE; 60 virtual void GetReadablePtr(char** ptr, int* size) const override;
61 61
62 // Returns the number of bytes read into 'bytes'. 62 // Returns the number of bytes read into 'bytes'.
63 virtual int Read(char* bytes, int size) OVERRIDE; 63 virtual int Read(char* bytes, int size) override;
64 64
65 // Removes all data from the ring buffer. 65 // Removes all data from the ring buffer.
66 virtual void Clear() OVERRIDE; 66 virtual void Clear() override;
67 67
68 // Reserves contiguous writable empty space in the buffer of size bytes. 68 // Reserves contiguous writable empty space in the buffer of size bytes.
69 // Since the point of this class is to have a fixed size buffer, be careful 69 // Since the point of this class is to have a fixed size buffer, be careful
70 // not to inadvertently resize the buffer using Reserve(). If the reserve 70 // not to inadvertently resize the buffer using Reserve(). If the reserve
71 // size is <= BytesFree(), it is guaranteed that the buffer size will not 71 // size is <= BytesFree(), it is guaranteed that the buffer size will not
72 // change. 72 // change.
73 // This can be an expensive operation, it may new a buffer copy all existing 73 // This can be an expensive operation, it may new a buffer copy all existing
74 // data and delete the old data. Even if the existing buffer does not need 74 // data and delete the old data. Even if the existing buffer does not need
75 // to be resized, unread data may still need to be non-destructively copied 75 // to be resized, unread data may still need to be non-destructively copied
76 // to consolidate fragmented free space. If the size requested is less than 76 // to consolidate fragmented free space. If the size requested is less than
77 // or equal to BytesFree(), it is guaranteed that the buffer size will not 77 // or equal to BytesFree(), it is guaranteed that the buffer size will not
78 // change. 78 // change.
79 virtual bool Reserve(int size) OVERRIDE; 79 virtual bool Reserve(int size) override;
80 80
81 // Removes the oldest 'amount_to_advance' characters. 81 // Removes the oldest 'amount_to_advance' characters.
82 // If amount_to_consume > ReadableBytes(), this performs a Clear() instead. 82 // If amount_to_consume > ReadableBytes(), this performs a Clear() instead.
83 virtual void AdvanceReadablePtr(int amount_to_advance) OVERRIDE; 83 virtual void AdvanceReadablePtr(int amount_to_advance) override;
84 84
85 // Moves the internal pointers around such that the amount of data specified 85 // Moves the internal pointers around such that the amount of data specified
86 // here is expected to already be resident (as if it was Written). 86 // here is expected to already be resident (as if it was Written).
87 virtual void AdvanceWritablePtr(int amount_to_advance) OVERRIDE; 87 virtual void AdvanceWritablePtr(int amount_to_advance) override;
88 88
89 protected: 89 protected:
90 int read_idx() const { return read_idx_; } 90 int read_idx() const { return read_idx_; }
91 int write_idx() const { return write_idx_; } 91 int write_idx() const { return write_idx_; }
92 int bytes_used() const { return bytes_used_; } 92 int bytes_used() const { return bytes_used_; }
93 int buffer_size() const { return buffer_size_; } 93 int buffer_size() const { return buffer_size_; }
94 const char* buffer() const { return buffer_.get(); } 94 const char* buffer() const { return buffer_.get(); }
95 95
96 int set_read_idx(int idx) { return read_idx_ = idx; } 96 int set_read_idx(int idx) { return read_idx_ = idx; }
97 int set_write_idx(int idx) { return write_idx_ = idx; } 97 int set_write_idx(int idx) { return write_idx_ = idx; }
98 98
99 private: 99 private:
100 scoped_ptr<char[]> buffer_; 100 scoped_ptr<char[]> buffer_;
101 int buffer_size_; 101 int buffer_size_;
102 int bytes_used_; 102 int bytes_used_;
103 int read_idx_; 103 int read_idx_;
104 int write_idx_; 104 int write_idx_;
105 105
106 RingBuffer(const RingBuffer&); 106 RingBuffer(const RingBuffer&);
107 void operator=(const RingBuffer&); 107 void operator=(const RingBuffer&);
108 }; 108 };
109 109
110 } // namespace net 110 } // namespace net
111 111
112 #endif // NET_TOOLS_FLIP_SERVER_RING_BUFFER_H__ 112 #endif // NET_TOOLS_FLIP_SERVER_RING_BUFFER_H__
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