1 | /* ************************************************************************** * |
---|
2 | * Copyright © IPSL/LSCE, XMLIOServer, Avril 2010 - Octobre 2011 * |
---|
3 | * ************************************************************************** */ |
---|
4 | |
---|
5 | #ifndef __XIOS_NO_EXTERN |
---|
6 | |
---|
7 | // C++ standard headers |
---|
8 | #include <fstream> |
---|
9 | |
---|
10 | #endif // __XIOS_NO_EXTERN |
---|
11 | |
---|
12 | // XMLIOServer headers |
---|
13 | #include "circular_buffer.hpp" |
---|
14 | #include "buffer_impl.hpp" |
---|
15 | |
---|
16 | // /////////////////////////////// Définitions ////////////////////////////// // |
---|
17 | |
---|
18 | namespace xmlioserver { |
---|
19 | namespace comm { |
---|
20 | |
---|
21 | // ------------------------------ Constructeurs ----------------------------- |
---|
22 | |
---|
23 | CCircularBuffer::CCircularBuffer(std::size_t _size) |
---|
24 | : SuperClass(_size) |
---|
25 | , p_write(0), p_read(0), p_unused(0) |
---|
26 | , p_wait(0), locked_data(0) |
---|
27 | , nbrequest(0) |
---|
28 | { /* Ne rien faire de plus */ } |
---|
29 | |
---|
30 | CCircularBuffer::CCircularBuffer(const CCircularBuffer & _cbuffer_ref) |
---|
31 | : SuperClass(_cbuffer_ref) |
---|
32 | , p_write(_cbuffer_ref.p_write), p_read(_cbuffer_ref.p_read), p_unused(_cbuffer_ref.p_unused) |
---|
33 | , p_wait(_cbuffer_ref.p_wait), locked_data(_cbuffer_ref.locked_data) |
---|
34 | , nbrequest(_cbuffer_ref.nbrequest) |
---|
35 | { /* Ne rien faire de plus */ } |
---|
36 | |
---|
37 | CCircularBuffer::CCircularBuffer(const CCircularBuffer * const _cbuffer_ptr) |
---|
38 | : SuperClass(_cbuffer_ptr) |
---|
39 | , p_write(_cbuffer_ptr->p_write), p_read(_cbuffer_ptr->p_read), p_unused(_cbuffer_ptr->p_unused) |
---|
40 | , p_wait(_cbuffer_ptr->p_wait), locked_data(_cbuffer_ptr->locked_data) |
---|
41 | , nbrequest(_cbuffer_ptr->nbrequest) |
---|
42 | { /* Ne rien faire de plus */ } |
---|
43 | |
---|
44 | // ------------------------------- Destructeur ------------------------------ |
---|
45 | |
---|
46 | CCircularBuffer::~CCircularBuffer(void) |
---|
47 | { /* Ne rien faire de plus */ } |
---|
48 | |
---|
49 | // ------------------------------ Remise à zéro ----------------------------- |
---|
50 | |
---|
51 | void CCircularBuffer::clear(void) |
---|
52 | { |
---|
53 | this-> p_write = 0; |
---|
54 | this-> p_read = 0; |
---|
55 | this-> p_unused = 0; |
---|
56 | this-> p_wait = 0; |
---|
57 | this-> locked_data = 0; |
---|
58 | this-> nbrequest = 0; |
---|
59 | } |
---|
60 | |
---|
61 | // ------------------------------- Accesseurs ------------------------------- |
---|
62 | |
---|
63 | std::size_t CCircularBuffer::getNextRequestSize(void) const |
---|
64 | { |
---|
65 | if (!this->hasRequest()) |
---|
66 | XIOS_ERROR("CCircularBuffer::getNextRequestSize()", |
---|
67 | << " invalid call !"); |
---|
68 | long int nbargs = 0; |
---|
69 | std::size_t startpos = this-> p_read; |
---|
70 | std::size_t currsize = 2 * SuperClass::getRequestedSize(nbargs); |
---|
71 | nbargs = SuperClass::getInt(startpos + currsize); |
---|
72 | currsize += SuperClass::getRequestedSize(nbargs); |
---|
73 | |
---|
74 | for (long int i = 0; i < nbargs; i++) |
---|
75 | { |
---|
76 | CBufferData bufdata; |
---|
77 | SuperClass::getBufferData(bufdata, startpos + currsize); |
---|
78 | currsize += (bufdata.size + DATA_HEADER_SIZE); |
---|
79 | } |
---|
80 | return (currsize); |
---|
81 | } |
---|
82 | |
---|
83 | CLinearBuffer CCircularBuffer::getNextRequest(void) |
---|
84 | { |
---|
85 | std::size_t startpos = this-> p_read; |
---|
86 | std::size_t currsize = this->getNextRequestSize(); |
---|
87 | |
---|
88 | this->movePRead(currsize); |
---|
89 | this->nbrequest--; |
---|
90 | //std::cout << this->nbrequest << std::endl; |
---|
91 | |
---|
92 | return (CLinearBuffer(SuperClass::getData(startpos), currsize)); |
---|
93 | } |
---|
94 | |
---|
95 | // ------------------------------- Mutateurs -------------------------------- |
---|
96 | |
---|
97 | void CCircularBuffer::appendRequest(const CLinearBuffer & _brequest) |
---|
98 | { |
---|
99 | std::size_t usedsize = _brequest.getUsedSize(); |
---|
100 | if (!this->isAvailable(usedsize)) |
---|
101 | XIOS_ERROR("CCircularBuffer::appendRequest(brequest)", |
---|
102 | << " invalid call !"); |
---|
103 | std::size_t data_begin = this->prepareNextDataPosition(usedsize); |
---|
104 | SuperClass::setData(_brequest.getData(), usedsize, data_begin); |
---|
105 | this->updateNbRequests(data_begin, data_begin + usedsize); |
---|
106 | } |
---|
107 | |
---|
108 | char * CCircularBuffer::prepareNextData(std::size_t data_size) |
---|
109 | { |
---|
110 | return (SuperClass::getData(this->prepareNextDataPosition(data_size))); |
---|
111 | } |
---|
112 | |
---|
113 | std::size_t CCircularBuffer::prepareNextDataPosition(std::size_t data_size) |
---|
114 | { |
---|
115 | this->p_wait = this-> p_write; |
---|
116 | this->locked_data = data_size; |
---|
117 | if (!this->isAvailable(data_size)) |
---|
118 | XIOS_ERROR("CCircularBuffer::prepareNextDataPosition(data_size)", |
---|
119 | << " invalid call !"); |
---|
120 | if ((this->p_write + this->locked_data) > SuperClass::getSize()) |
---|
121 | this->p_wait = 0; |
---|
122 | |
---|
123 | this->movePWrite(this->locked_data); |
---|
124 | return (this->p_wait); |
---|
125 | } |
---|
126 | |
---|
127 | // ------------------ Déplacements de pointeurs internes ------------------- |
---|
128 | |
---|
129 | void CCircularBuffer::movePRead(std::size_t data_size) |
---|
130 | { |
---|
131 | this-> p_read += data_size; |
---|
132 | if ((this-> p_read == this-> p_unused) && |
---|
133 | (this-> p_read == this-> p_write)) |
---|
134 | { |
---|
135 | this->clear(); |
---|
136 | return; |
---|
137 | } |
---|
138 | |
---|
139 | if (this-> p_read == this-> p_unused) |
---|
140 | { |
---|
141 | this-> p_unused = this-> p_write; |
---|
142 | this-> p_read = 0; |
---|
143 | return; |
---|
144 | } |
---|
145 | if (this-> p_read == this-> p_write) |
---|
146 | { |
---|
147 | this->clear(); |
---|
148 | } |
---|
149 | } |
---|
150 | |
---|
151 | void CCircularBuffer::movePWrite(std::size_t data_size) |
---|
152 | { |
---|
153 | if ((this-> p_write + data_size) > SuperClass::getSize()) |
---|
154 | { |
---|
155 | this-> p_unused = this-> p_write; |
---|
156 | this-> p_write = data_size; |
---|
157 | if (this-> p_read < (data_size)) |
---|
158 | XIOS_ERROR("CCircularBuffer::movePWrite(data_size)", |
---|
159 | << " invalid position 1 !"); |
---|
160 | } |
---|
161 | else |
---|
162 | { |
---|
163 | if ((this-> p_read > this-> p_write) && |
---|
164 | (this-> p_read < (this-> p_write + data_size))) |
---|
165 | XIOS_ERROR("CCircularBuffer::movePWrite(data_size)", |
---|
166 | << " invalid position 2 !"); |
---|
167 | this-> p_write += data_size; |
---|
168 | if (this->p_read < this->p_write) |
---|
169 | this-> p_unused = this-> p_write; |
---|
170 | } |
---|
171 | } |
---|
172 | |
---|
173 | // --------------------------- Tests sur le buffer -------------------------- |
---|
174 | |
---|
175 | bool CCircularBuffer::hasRequest(void) const |
---|
176 | { |
---|
177 | return (this->nbrequest != 0); |
---|
178 | } |
---|
179 | |
---|
180 | bool CCircularBuffer::isAvailable(std::size_t data_size) const |
---|
181 | { |
---|
182 | if (this->p_write == this->p_unused) |
---|
183 | return (((SuperClass::getSize() - this->p_write) >= data_size) || |
---|
184 | (this->p_read >= data_size)); |
---|
185 | else |
---|
186 | return ((this->p_read - this->p_write) >= data_size); |
---|
187 | } |
---|
188 | |
---|
189 | // ------------------------- Ecriture fichier ------------------------------- |
---|
190 | |
---|
191 | void CCircularBuffer::printToTextFile (const std::string & _filename) |
---|
192 | { |
---|
193 | std::ofstream ofs(_filename.c_str()); |
---|
194 | this->printToTextStream(ofs); |
---|
195 | ofs.close(); |
---|
196 | } |
---|
197 | |
---|
198 | void CCircularBuffer::printToTextStream (std::ostream & _ostr) |
---|
199 | { |
---|
200 | std::size_t _p_write = p_write, |
---|
201 | _p_read = p_read, |
---|
202 | _p_unused = p_unused, |
---|
203 | _p_wait = p_wait, |
---|
204 | _locked_data = locked_data, |
---|
205 | _nbrequest = nbrequest; |
---|
206 | |
---|
207 | while (this->hasRequest()) |
---|
208 | { |
---|
209 | this->getNextRequest().printToTextStream(_ostr); |
---|
210 | _ostr << std::endl; |
---|
211 | } |
---|
212 | |
---|
213 | p_write = _p_write; |
---|
214 | p_read = _p_read; |
---|
215 | p_unused = _p_unused; |
---|
216 | p_wait = _p_wait; |
---|
217 | locked_data = _locked_data; |
---|
218 | nbrequest = _nbrequest; |
---|
219 | } |
---|
220 | |
---|
221 | // ------------------------------- Accesseurs ------------------------------- |
---|
222 | |
---|
223 | std::size_t CCircularBuffer::getNumberOfRequest(void) const |
---|
224 | { |
---|
225 | return (this->nbrequest); |
---|
226 | } |
---|
227 | |
---|
228 | std::size_t CCircularBuffer::getReadPosition(void) const |
---|
229 | { |
---|
230 | return (this->p_read); |
---|
231 | } |
---|
232 | |
---|
233 | std::size_t CCircularBuffer::getWritePosition(void) const |
---|
234 | { |
---|
235 | return (this->p_write); |
---|
236 | } |
---|
237 | |
---|
238 | std::size_t CCircularBuffer::getUnusedPosition(void) const |
---|
239 | { |
---|
240 | return (this->p_unused); |
---|
241 | } |
---|
242 | |
---|
243 | std::size_t CCircularBuffer::getWaitPosition(void) const |
---|
244 | { |
---|
245 | return (this->p_wait); |
---|
246 | } |
---|
247 | |
---|
248 | |
---|
249 | // ------------------------- Mise à jour des données ----------------------- |
---|
250 | |
---|
251 | void CCircularBuffer::updateNbRequests(void) |
---|
252 | { |
---|
253 | this->updateNbRequests(this->p_wait, this->p_wait + this->locked_data); |
---|
254 | } |
---|
255 | |
---|
256 | void CCircularBuffer::updateNbRequests(std::size_t _data_begin, std::size_t _data_end) |
---|
257 | { |
---|
258 | this-> p_wait = 0; |
---|
259 | this-> locked_data = 0; |
---|
260 | std::size_t position = _data_begin; |
---|
261 | while (position != _data_end) |
---|
262 | { |
---|
263 | this->nbrequest++; |
---|
264 | position = SuperClass::getNextDataPosition(position); // manager id |
---|
265 | position = SuperClass::getNextDataPosition(position); // method id |
---|
266 | SuperClass::updateBufferData(position); |
---|
267 | long int nbarg = SuperClass::getInt(position); |
---|
268 | position = SuperClass::getNextDataPosition(position); |
---|
269 | for (long int i = 0; i < nbarg; i++) |
---|
270 | position = SuperClass::getNextDataPosition(position); |
---|
271 | |
---|
272 | if (position > _data_end) |
---|
273 | XIOS_ERROR("CCircularBuffer::updateNbRequests(std::size_t data_begin, std::size_t data_end)", |
---|
274 | << "[ position courante" << position |
---|
275 | << ", fin de traitement" << _data_end << " ] " |
---|
276 | << "Impossible de mettre à jour la liste des requêtes !"); |
---|
277 | } |
---|
278 | } |
---|
279 | |
---|
280 | } // namespace comm |
---|
281 | } // namespace xmlioserver |
---|