A Discrete-Event Network Simulator
API
tag-buffer.h
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1/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2/*
3 * Copyright (c) 2008 INRIA
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation;
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
19 */
20#ifndef TAG_BUFFER_H
21#define TAG_BUFFER_H
22
23#include <stdint.h>
24
25#define TAG_BUFFER_USE_INLINE 1
26
27#ifdef TAG_BUFFER_USE_INLINE
28#define TAG_BUFFER_INLINE inline
29#else
30#define TAG_BUFFER_INLINE
31#endif
32
33namespace ns3 {
34
52{
53public:
54
60 TagBuffer (uint8_t *start, uint8_t *end);
61
66 void TrimAtEnd (uint32_t trim);
67
72 void CopyFrom (TagBuffer o);
73
79 TAG_BUFFER_INLINE void WriteU8 (uint8_t v);
85 TAG_BUFFER_INLINE void WriteU16 (uint16_t v);
97 void WriteU64 (uint64_t v);
104 void WriteDouble (double v);
112 void Write (const uint8_t *buffer, uint32_t size);
119 TAG_BUFFER_INLINE uint8_t ReadU8 (void);
126 TAG_BUFFER_INLINE uint16_t ReadU16 (void);
140 uint64_t ReadU64 (void);
147 double ReadDouble (void);
156 void Read (uint8_t *buffer, uint32_t size);
157private:
158
159 uint8_t *m_current;
160 uint8_t *m_end;
161};
162
163} // namespace ns3
164
165#ifdef TAG_BUFFER_USE_INLINE
166
167#include "ns3/assert.h"
168
169namespace ns3 {
170
171void
173{
174 NS_ASSERT (m_current + 1 <= m_end);
175 *m_current = v;
176 m_current++;
177}
178
179void
181{
182 WriteU8 ((data >> 0) & 0xff);
183 WriteU8 ((data >> 8) & 0xff);
184}
185void
187{
188 WriteU8 ((data >> 0) & 0xff);
189 WriteU8 ((data >> 8) & 0xff);
190 WriteU8 ((data >> 16) & 0xff);
191 WriteU8 ((data >> 24) & 0xff);
192}
193
194uint8_t
196{
197 NS_ASSERT (m_current + 1 <= m_end);
198 uint8_t v;
199 v = *m_current;
200 m_current++;
201 return v;
202}
203
204uint16_t
206{
207 uint8_t byte0 = ReadU8 ();
208 uint8_t byte1 = ReadU8 ();
209 uint16_t data = byte1;
210 data <<= 8;
211 data |= byte0;
212 return data;
213}
216{
217 uint8_t byte0 = ReadU8 ();
218 uint8_t byte1 = ReadU8 ();
219 uint8_t byte2 = ReadU8 ();
220 uint8_t byte3 = ReadU8 ();
221 uint32_t data = byte3;
222 data <<= 8;
223 data |= byte2;
224 data <<= 8;
225 data |= byte1;
226 data <<= 8;
227 data |= byte0;
228 return data;
229}
230
231} // namespace ns3
232
233#endif /* TAG_BUFFER_USE_INLINE */
234
235#endif /* TAG_BUFFER_H */
read and write tag data
Definition: tag-buffer.h:52
TagBuffer(uint8_t *start, uint8_t *end)
Constructor.
Definition: tag-buffer.cc:183
void WriteU64(uint64_t v)
Definition: tag-buffer.cc:102
void TrimAtEnd(uint32_t trim)
Trim some space from the end.
Definition: tag-buffer.cc:191
void Read(uint8_t *buffer, uint32_t size)
Definition: tag-buffer.cc:176
TAG_BUFFER_INLINE uint16_t ReadU16(void)
Definition: tag-buffer.h:205
void WriteDouble(double v)
Definition: tag-buffer.cc:115
TAG_BUFFER_INLINE uint32_t ReadU32(void)
Definition: tag-buffer.h:215
TAG_BUFFER_INLINE void WriteU8(uint8_t v)
Definition: tag-buffer.h:172
double ReadDouble(void)
Definition: tag-buffer.cc:164
TAG_BUFFER_INLINE void WriteU32(uint32_t v)
Definition: tag-buffer.h:186
uint64_t ReadU64(void)
Definition: tag-buffer.cc:134
uint8_t * m_current
current TagBuffer position
Definition: tag-buffer.h:159
uint8_t * m_end
end TagBuffer position
Definition: tag-buffer.h:160
void Write(const uint8_t *buffer, uint32_t size)
Definition: tag-buffer.cc:125
TAG_BUFFER_INLINE void WriteU16(uint16_t v)
Definition: tag-buffer.h:180
TAG_BUFFER_INLINE uint8_t ReadU8(void)
Definition: tag-buffer.h:195
void CopyFrom(TagBuffer o)
Copy the nternal structure of another TagBuffer.
Definition: tag-buffer.cc:199
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
Definition: assert.h:67
Every class exported by the ns3 library is enclosed in the ns3 namespace.
def start()
Definition: core.py:1852
uint8_t data[writeSize]
#define TAG_BUFFER_INLINE
Definition: tag-buffer.h:28