source: flair-src/trunk/lib/FlairCore/src/ui_com.cpp@ 442

Last change on this file since 442 was 442, checked in by Sanahuja Guillaume, 3 years ago

update buffering
File size: 21.3 KB
Line 
1// %flair:license{
2// This file is part of the Flair framework distributed under the
3// CECILL-C License, Version 1.0.
4// %flair:license}
5// created: 2011/05/01
6// filename: ui_com.cpp
7//
8// author: Guillaume Sanahuja
9// Copyright Heudiasyc UMR UTC/CNRS 7253
10//
11// version: $Id: $
12//
13// purpose: classe permettant la lecture et l'ecriture sur socket UDT
14//
15//
16/*********************************************************************/
17
18#include "ui_com.h"
19#include <cstdlib>
20#include <string.h>
21#include <unistd.h>
22#include "Mutex.h"
23#include "SendData.h"
24#include "communication.h"
25#include "FrameworkManager.h"
26#include "zlib.h"
27#include <assert.h>
28#include "config.h"
29
30#ifdef __XENO__
31#include <pthread.h>
32#include <native/task.h>
33#include <native/task.h>
34#include <fcntl.h>
35#endif
36
37using std::string;
38using namespace flair::core;
39using namespace flair::gui;
40
41ui_com::ui_com(const Object *parent, UDTSOCKET sock)
42 : Thread(parent, "send", 2,16384*2) {
43 // buffer envoi
44 send_buffer = (char *)malloc(3);
45 send_size = 3; // id(1)+period(2)
46
47 // mutex
48 send_mutex = NULL;
49 send_mutex = new Mutex(this, ObjectName());
50
51 socket_fd = sock;
52 connection_lost = false;
53
54#ifdef __XENO__
55 Err("multi buffering is not well implemented in RT\n");
56#endif
57
58#ifdef __XENO__
59 int status;
60 string tmp_name;
61
62 is_running = true;
63
64 // pipe
65 tmp_name = getFrameworkManager()->ObjectName() + "-" + ObjectName() + "-pipe";
66 // xenomai limitation
67 if (tmp_name.size() > 31)
68 Err("rt_pipe_create error (%s is too long)\n", tmp_name.c_str());
69#ifdef RT_PIPE_SIZE
70 status = rt_pipe_create(&pipe, tmp_name.c_str(), P_MINOR_AUTO, RT_PIPE_SIZE);
71#else
72 status = rt_pipe_create(&pipe, tmp_name.c_str(), P_MINOR_AUTO, 0);
73#endif
74
75 if (status != 0) {
76 char errorMsg[256];
77 Err("rt_pipe_create error (%s)\n", strerror_r(-status, errorMsg, sizeof(errorMsg)));
78 // return -1;
79 }
80
81// start user side thread
82#ifdef NRT_STACK_SIZE
83 // Initialize thread creation attributes
84 pthread_attr_t attr;
85 if (pthread_attr_init(&attr) != 0) {
86 Err("pthread_attr_init error\n");
87 }
88
89 if (pthread_attr_setstacksize(&attr, NRT_STACK_SIZE) != 0) {
90 Err("pthread_attr_setstacksize error\n");
91 }
92
93 if (pthread_create(&thread, &attr, user_thread, (void *)this) < 0)
94#else // NRT_STACK_SIZE
95 if (pthread_create(&thread, NULL, user_thread, (void *)this) < 0)
96#endif // NRT_STACK_SIZE
97 {
98 Err("pthread_create error\n");
99 // return -1;
100 }
101#ifdef NRT_STACK_SIZE
102 if (pthread_attr_destroy(&attr) != 0) {
103 Err("pthread_attr_destroy error\n");
104 }
105#endif
106
107#endif //__XENO__
108 int timeout = 100;
109 if (UDT::setsockopt(socket_fd, 0, UDT_RCVTIMEO, &timeout, sizeof(int)) != 0)
110 Err("UDT::setsockopt error (UDT_RCVTIMEO)\n");
111 /*
112 timeout=-1;
113 if (UDT::setsockopt(socket_fd, 0, UDT_SNDTIMEO, &timeout, sizeof(int)) != 0)
114 Err("UDT::setsockopt error (UDT_SNDTIMEO)\n");
115*/
116 bool blocking = true;
117 if (UDT::setsockopt(socket_fd, 0, UDT_SNDSYN, &blocking, sizeof(bool)) != 0)
118 Err("UDT::setsockopt error (UDT_SNDSYN)\n");
119
120 if (UDT::setsockopt(socket_fd, 0, UDT_RCVSYN, &blocking, sizeof(bool)) != 0)
121 Err("UDT::setsockopt error (UDT_RCVSYN)\n");
122 //#endif //__XENO__
123
124 Start();
125}
126
127ui_com::~ui_com() {
128//Printf("destruction ui_com\n");
129
130#ifdef __XENO__
131 is_running = false;
132
133 pthread_join(thread, NULL);
134
135 int status = rt_pipe_delete(&pipe);
136 if (status != 0) {
137 char errorMsg[256];
138 Err("rt_pipe_delete error (%s)\n", strerror_r(-status, errorMsg, sizeof(errorMsg)));
139 }
140#endif
141
142 SafeStop();
143
144 if (IsSuspended() == true)
145 Resume();
146
147 Join();
148
149 char buf=CLOSING_CONNECTION;
150 Send(&buf,1);
151
152 if (send_buffer != NULL)
153 free(send_buffer);
154 send_buffer = NULL;
155
156 //Printf("destruction ui_com ok\n");
157}
158
159//send, public part; dispatch to SendNRT (nrt) or rt_pipe (rt)
160//rt_pipe is read by user thread which calls SendNRT
161void ui_com::Send(char *buf, ssize_t size,int ttl) {
162 if (connection_lost == true)
163 return;
164
165 char *tosend = buf;
166 if (buf[0] == XML_HEADER) {
167 // cut xml header
168 tosend = strstr(buf, "<root");
169 size -= tosend - buf;
170 }
171
172#ifdef __XENO__
173 //data buf
174 ssize_t nb_write = rt_pipe_write(&pipe, tosend, size, P_NORMAL);
175 if (nb_write < 0) {
176 char errorMsg[256];
177 Err("rt_pipe_write error (%s)\n", strerror_r(-nb_write, errorMsg, sizeof(errorMsg)));
178 } else if (nb_write != size) {
179 Err("rt_pipe_write error %i/%i\n", nb_write, size);
180 }
181 //ttl
182 nb_write = rt_pipe_write(&pipe, &ttl, sizeof(ttl), P_NORMAL);
183 if (nb_write < 0) {
184 char errorMsg[256];
185 Err("rt_pipe_write error (%s)\n", strerror_r(-nb_write, errorMsg, sizeof(errorMsg)));
186 } else if (nb_write != sizeof(ttl)) {
187 Err("rt_pipe_write error %i/%i\n", nb_write, size);
188 }
189#else //__XENO__
190 SendNRT(tosend,size,ttl);
191#endif //__XENO__
192}
193
194//send, private part; called to effectively send to udt
195//this is always in nrt
196void ui_com::SendNRT(char *buf, ssize_t size,int ttl) {
197 ssize_t nb_write;
198 bool sendItCompressed = false;
199
200#ifdef COMPRESS_FRAMES
201 if (buf[0] == XML_HEADER) {
202 sendItCompressed = true;
203 }
204#endif // COMPRESS_FRAMES
205
206 if (sendItCompressed) {
207 char *out;
208 ssize_t out_size;
209 if (compressBuffer(buf, size, &out, &out_size, 9) == Z_OK) {
210 size = out_size;
211 nb_write = UDT::sendmsg(socket_fd, out, size,ttl, true);
212 free(out);
213 } else {
214 Warn("Compress error, sending it uncompressed\n");
215 sendItCompressed = false;
216 }
217 }
218
219 if (!sendItCompressed) {
220 nb_write = UDT::sendmsg(socket_fd, buf, size, ttl, true);
221 }
222
223 //Printf("write %i %i\n",nb_write,size);
224 if (nb_write < 0) {
225 Err("UDT::sendmsg error (%s)\n", UDT::getlasterror().getErrorMessage());
226 if (UDT::getlasterror().getErrorCode() == CUDTException::ECONNLOST ||
227 UDT::getlasterror().getErrorCode() == CUDTException::EINVSOCK) {
228 connection_lost = true;
229 }
230 } else if (nb_write != size) {
231 Err("%s, code %i (%ld/%ld)\n", UDT::getlasterror().getErrorMessage(),
232 UDT::getlasterror().getErrorCode(), nb_write, size);
233 }
234}
235
236ssize_t ui_com::Receive(char *buf, ssize_t buf_size) {
237 ssize_t bytesRead = UDT::recvmsg(socket_fd, buf, buf_size);
238
239 if (bytesRead < 0) {
240 if (UDT::getlasterror().getErrorCode() == CUDTException::ECONNLOST) {
241 Err("UDT::recvmsg error (%s)\n", UDT::getlasterror().getErrorMessage());
242 connection_lost = true;
243 }
244 }
245
246 return bytesRead;
247}
248
249void ui_com::CheckConnection(void) {
250 int32_t val,len;
251
252 int result=UDT::getsockopt(socket_fd,0,UDT_STATE,&val,&len);
253 if (result < 0) {
254 Printf("UDT::getsockopt error (%s)\n", UDT::getlasterror().getErrorMessage());
255 }
256 // printf("opt: %i %i %i\n",result,val,len);
257}
258
259//todo: le run (rt) push les données une par une
260//le nrt recupere et decide quand envoyer :
261// -quand toutes les données d'une meme periode sont recues
262// -quand on a atteind le nb buffering
263// -le nrt alloue dynamiquement le buffer d'envoi
264//-> enelver l'alloc du buffer au startup (UpdateDataToSendSize)
265void ui_com::Run(void) {
266 // check endianness
267 char header;
268 if (IsBigEndian()) {
269 header = DATA_BIG_ENDIAN;
270 Printf("System is big endian\n");
271 } else {
272 header = DATA_LITTLE_ENDIAN;
273 Printf("System is little endian\n");
274 }
275
276#ifdef __XENO__
277 WarnUponSwitches(true);
278 printf("\n"); // a revoir pourquoi??
279// sans ce printf, dans le simu_roll, le suspend ne fonctionne pas...
280#endif
281 // on attend d'avoir des choses à faire
282 Suspend();
283
284 while (!ToBeStopped()) {
285 size_t resume_id;
286 Time min = 0xffffffffffffffffULL;
287
288 // on recpuere l'id de la prochaine execution
289 send_mutex->GetMutex();
290 resume_id = resumeTimes.size();
291 for (size_t i = 0; i < resumeTimes.size(); i++) {
292 if (resumeTimes.at(i) < min && datasToSend.at(i)->IsEnabled() == true) {
293 min = resumeTimes.at(i);
294 resume_id = i;
295 }
296 }
297
298 // attente
299 if (resume_id < resumeTimes.size()) {
300 Time time = resumeTimes.at(resume_id);
301 uint16_t resume_period = datasToSend.at(resume_id)->SendPeriod();
302 send_mutex->ReleaseMutex();
303 // on dort jusqu'a la prochaine execution
304 SleepUntil(time);
305
306 // envoi des donnees
307 int offset = 3;
308 send_buffer[0] = header;
309 send_mutex->GetMutex();
310
311 for (size_t i = 0; i < datasToSend.size(); i++) {
312 if (datasToSend.at(i)->SendPeriod() == resume_period && datasToSend.at(i)->IsEnabled() == true) {
313 datasToSend.at(i)->CopyDatas(send_buffer + offset);
314 offset += datasToSend.at(i)->SendSize();
315 }
316 }
317 if (offset != 3) {
318 memcpy(&send_buffer[1], &resume_period, sizeof(uint16_t));
319 //printf("send %i %i %i %x %x\n",resume_period,offset,sizeof(uint16_t),send_buffer,&send_buffer[1]);
320 // for(int i=0;i<offset;i++) printf("%x ",send_buffer[i]);
321 // printf("\n");
322 Send(send_buffer, offset,resume_period);
323 }
324
325 //test to push datas
326 for (size_t i = 0; i < datasToSend.size(); i++) {
327 if (datasToSend.at(i)->SendPeriod() == resume_period && datasToSend.at(i)->IsEnabled() == true) {
328 PushDatasToSend(datasToSend.at(i));
329 }
330 }
331 //end test
332
333 // on planifie la prochaine execution
334 for (size_t i = 0; i < datasToSend.size(); i++) {
335 if (datasToSend.at(i)->SendPeriod() == resume_period) {
336 resumeTimes.at(i) += datasToSend.at(i)->SendPeriod() * 1000000;
337 }
338 }
339 send_mutex->ReleaseMutex();
340 //Printf("%i %lld\n",resume_period,GetTime()/1000000);
341 } else {
342 send_mutex->ReleaseMutex();
343 // rien a faire, suspend
344 //Printf("rien a faire suspend\n");
345 Suspend();
346 //Printf("wake\n");
347 // on planifie la prochaine execution
348 Time time = GetTime();
349 send_mutex->GetMutex();
350 for (size_t i = 0; i < datasToSend.size(); i++) {
351 resumeTimes.at(i) =
352 time + (Time)datasToSend.at(i)->SendPeriod() * 1000000;
353 }
354 send_mutex->ReleaseMutex();
355 }
356 }
357}
358
359
360//called with send_mutex locked
361//in nrt
362//TODO: RT part has to put datas in pipe, then user thread call this
363void ui_com::PushDatasToSend(const SendData *dataToSend) {
364 PushedData_t* ptr=NULL;
365 //check if we already have one buffer for this couple period/nb_buffering
366 for (size_t i = 0; i < pushedDatas.size(); i++) {
367 if (pushedDatas.at(i).period==dataToSend->SendPeriod() && pushedDatas.at(i).nb_buffering==dataToSend->NbBuffering()) {
368 ptr=&pushedDatas.at(i);
369 }
370 }
371 if(ptr==NULL) {
372 Warn("no match in buffers\n");
373 return;
374 }
375
376 if(ptr->actual_size==0) {
377 if (IsBigEndian()) {
378 ptr->buf[0] = MULTIPLE_DATA_BIG_ENDIAN;
379 } else {
380 ptr->buf[0] = MULTIPLE_DATA_LITTLE_ENDIAN;
381 }
382 ptr->actual_size+=sizeof(char);
383 memcpy(ptr->buf+ptr->actual_size,&(ptr->period),sizeof(uint16_t));
384 ptr->actual_size+=sizeof(uint16_t);
385 memcpy(ptr->buf+ptr->actual_size,&(ptr->nb_buffering),sizeof(uint16_t));
386 ptr->actual_size+=sizeof(uint16_t);
387 }
388
389 dataToSend->CopyDatas(ptr->buf+ptr->actual_size);
390 ptr->actual_size+=dataToSend->SendSize();
391 Printf("nb buffered %i/%i\n",ptr->actual_size,ptr->final_size);
392 Printf("pushed size %i period %i nb buffering %i\n",dataToSend->SendSize(),dataToSend->SendPeriod(),dataToSend->NbBuffering());
393 if(ptr->actual_size>=ptr->final_size) {//par securité on test aussi le cas ou supérieur
394 Printf("ready to send\n");
395 //clean
396 ptr->actual_size=0;
397 }
398}
399
400
401#ifdef __XENO__
402void *ui_com::user_thread(void *arg) {
403 int pipe_fd = -1;
404 string devname;
405 char *buf = NULL;
406 ui_com *caller = (ui_com *)arg;
407 int rv;
408 fd_set set;
409 struct timeval timeout;
410 ssize_t nb_read;
411 int ttl;
412
413 buf = (char *)malloc(NRT_PIPE_SIZE);
414 if (buf == NULL) {
415 caller->Err("malloc error\n");
416 }
417
418 devname = NRT_PIPE_PATH + getFrameworkManager()->ObjectName() + "-" +
419 caller->ObjectName() + "-pipe";
420 while (pipe_fd < 0) {
421 pipe_fd = open(devname.c_str(), O_RDWR);
422 if (pipe_fd < 0 && errno != ENOENT) {
423 char errorMsg[256];
424 caller->Err("open pipe_fd error (%s)\n", strerror_r(errno, errorMsg, sizeof(errorMsg)));
425 }
426 usleep(1000);
427 }
428
429 while (1) {
430 FD_ZERO(&set); // clear the set
431 FD_SET(pipe_fd, &set); // add our file descriptor to the set
432
433 timeout.tv_sec = 0;
434 timeout.tv_usec = SELECT_TIMEOUT_MS * 1000;
435
436 rv = select(FD_SETSIZE, &set, NULL, NULL, &timeout);
437
438 if (rv == -1) {
439 if (caller->is_running == false && UDT::getlasterror().getErrorCode() == CUDTException::ETIMEOUT)
440 break; // timeout
441 if (UDT::getlasterror().getErrorCode() != CUDTException::ETIMEOUT)
442 caller->Err("epoll_wait, %s, code %i\n",
443 UDT::getlasterror().getErrorMessage(), UDT::getlasterror().getErrorCode());
444 } else if (rv == 0) {
445 // printf("timeout\n"); // a timeout occured
446 if (caller->is_running == false)
447 break;
448
449 } else {
450 //read data buf and ttl
451 //RT part has made 2 rt_pipe_write; they should be available in nrt
452 //(select ensure at least one data is ready)
453 nb_read = read(pipe_fd, buf, NRT_PIPE_SIZE);
454 buf[nb_read] = 0;
455 read(pipe_fd, &ttl, sizeof(ttl));
456// printf("envoi\n%s\n",buf);
457
458 caller->SendNRT(buf, nb_read,ttl);
459 }
460 }
461
462 close(pipe_fd);
463 if (buf != NULL)
464 free(buf);
465 pthread_exit(0);
466}
467#endif
468
469int ui_com::compressBuffer(char *in, ssize_t in_size, char **out,
470 ssize_t *out_size, int level) {
471 int ret, flush;
472 unsigned have;
473 z_stream strm;
474
475 /* allocate deflate state */
476 strm.zalloc = Z_NULL;
477 strm.zfree = Z_NULL;
478 strm.opaque = Z_NULL;
479 ret = deflateInit(&strm, level);
480 if (ret != Z_OK)
481 return ret;
482
483 *out = (char *)malloc(COMPRESS_CHUNK);
484 if (!(*out))
485 return Z_BUF_ERROR;
486
487 strm.next_in = (unsigned char *)in;
488 strm.avail_out = COMPRESS_CHUNK;
489 strm.next_out = (unsigned char *)*out;
490 strm.avail_in = in_size;
491 flush = Z_FINISH;
492
493 ret = deflate(&strm, flush); /* no bad return value */
494 if (ret == Z_STREAM_ERROR) {
495 free(*out);
496 return ret;
497 }
498
499 have = COMPRESS_CHUNK - strm.avail_out;
500 *out_size = have;
501 // printf("%i -> %i\n",in_size,have);
502 /* clean up and return */
503 (void)deflateEnd(&strm);
504
505 if (strm.avail_out != 0) {
506 return Z_OK;
507 } else {
508 return Z_STREAM_ERROR;
509 }
510}
511
512int ui_com::uncompressBuffer(unsigned char *in, ssize_t in_size,
513 unsigned char **out, ssize_t *out_size) {
514 int ret;
515 // unsigned have;
516 z_stream strm;
517
518 /* allocate inflate state */
519 strm.zalloc = Z_NULL;
520 strm.zfree = Z_NULL;
521 strm.opaque = Z_NULL;
522 strm.avail_in = 0;
523 strm.next_in = Z_NULL;
524 ret = inflateInit(&strm);
525 if (ret != Z_OK)
526 return ret;
527
528 *out = (unsigned char *)malloc(COMPRESS_CHUNK);
529 if (!(*out))
530 return Z_BUF_ERROR;
531
532 strm.avail_in = in_size;
533 strm.next_in = in;
534 strm.avail_out = COMPRESS_CHUNK;
535 strm.next_out = *out;
536
537 ret = inflate(&strm, Z_NO_FLUSH);
538 assert(ret != Z_STREAM_ERROR); /* state not clobbered */
539 switch (ret) {
540 case Z_NEED_DICT:
541 ret = Z_DATA_ERROR; /* and fall through */
542 case Z_DATA_ERROR:
543 case Z_MEM_ERROR:
544 (void)inflateEnd(&strm);
545 return ret;
546 }
547 // have = COMPRESS_CHUNK - strm.avail_out;
548
549 /* clean up and return */
550 (void)inflateEnd(&strm);
551 return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR;
552}
553
554bool ui_com::ConnectionLost() { return connection_lost; }
555
556void ui_com::AddSendData(const SendData *obj) {
557 send_mutex->GetMutex();
558
559 resumeTimes.push_back(GetTime() + (Time)obj->SendPeriod() * 1000000);
560
561 // on resume en meme temps tout ceux qui ont la meme periode
562 for (size_t i = 0; i < datasToSend.size(); i++) {
563 if (datasToSend.at(i)->SendPeriod() == obj->SendPeriod()) {
564 resumeTimes.at(resumeTimes.size() - 1) = resumeTimes.at(i);
565 break;
566 }
567 }
568
569 datasToSend.push_back(obj);
570
571 send_mutex->ReleaseMutex();
572}
573
574//TODO: check if it is RT compatible
575//must be called with mutex locked
576void ui_com::UpdateSendData(const SendData *obj) {
577 // le mutex est deja pris par l'appellant
578 size_t id, i;
579
580 // on recupere l'id
581 for (i = 0; i < datasToSend.size(); i++) {
582 if (datasToSend.at(i) == obj) {
583 id = i;
584 break;
585 }
586 }
587
588 // on resume en meme temps tout ceux qui ont la meme periode
589 for (i = 0; i < datasToSend.size(); i++) {
590 if (i == id)
591 continue;
592 if (datasToSend.at(i)->IsEnabled() == true && datasToSend.at(i)->SendPeriod() == obj->SendPeriod()) {
593 resumeTimes.at(id) = resumeTimes.at(i);
594 break;
595 }
596 }
597
598 // si aucun match, on planifie l'execution
599 if (i == datasToSend.size())
600 resumeTimes.at(id) = GetTime() + (Time)obj->SendPeriod() * 1000000;
601
602 if (IsSuspended() == true) Resume();
603
604//update all buffers if necessary, discard datas
605 std::vector<PushedData_t>::iterator pushedDatasIterator = pushedDatas.begin();
606 while(pushedDatasIterator != pushedDatas.end()) {
607 size_t bufSize=0;
608 for (size_t i = 0; i < datasToSend.size(); i++) {
609 if (datasToSend.at(i)->IsEnabled() && datasToSend.at(i)->SendPeriod() == (*pushedDatasIterator).period && datasToSend.at(i)->NbBuffering()==(*pushedDatasIterator).nb_buffering) {
610 bufSize+=datasToSend.at(i)->SendSize();
611 }
612 }
613 bufSize*=(*pushedDatasIterator).nb_buffering;
614 if(bufSize!=0) bufSize+=sizeof(char)+sizeof(uint16_t)+sizeof(uint16_t);//header+period+nb_buffering
615 if(bufSize!=(*pushedDatasIterator).final_size && bufSize!=0) {
616 Printf("change buf size %i->%i\n",(*pushedDatasIterator).final_size,bufSize);
617 (*pushedDatasIterator).actual_size=0;
618 (*pushedDatasIterator).final_size=bufSize;
619 free((*pushedDatasIterator).buf);
620 (*pushedDatasIterator).buf=(char*)malloc(bufSize);
621 }
622 if(bufSize==0) {
623 Printf("delete buf\n");
624 free((*pushedDatasIterator).buf);
625 pushedDatasIterator = pushedDatas.erase(pushedDatasIterator);
626 } else {
627 ++pushedDatasIterator;
628 }
629 }
630
631 //check if we need a new buffer for this couple period/nb_buffering
632 if(obj->IsEnabled()) {
633 bool match=false;
634 for (size_t i = 0; i < pushedDatas.size(); i++) {
635 if (pushedDatas.at(i).period==obj->SendPeriod() && pushedDatas.at(i).nb_buffering==obj->NbBuffering()) {
636 Printf("match item %i, period %i nb buff %i\n",i,obj->SendPeriod(),obj->NbBuffering());
637 match=true;
638 }
639 }
640 //create new one
641 if(!match) {
642 printf("no match\n");
643 PushedData_t tmp;
644 tmp.period=obj->SendPeriod();
645 tmp.nb_buffering=obj->NbBuffering();
646 tmp.actual_size=0;
647 tmp.final_size=0;
648 for (size_t i = 0; i < datasToSend.size(); i++) {
649 Printf("data %i/%i %i %i\n",i,datasToSend.size(),datasToSend.at(i)->SendPeriod() ,datasToSend.at(i)->NbBuffering());
650 if (datasToSend.at(i)->IsEnabled() && datasToSend.at(i)->SendPeriod() == obj->SendPeriod() && datasToSend.at(i)->NbBuffering()==obj->NbBuffering()) {
651 tmp.final_size+=datasToSend.at(i)->SendSize();
652 Printf("add %i\n",datasToSend.at(i)->SendSize());
653 }
654 }
655 tmp.final_size*=obj->NbBuffering();
656 tmp.final_size+=sizeof(char)+sizeof(uint16_t)+sizeof(uint16_t);//header+period+nb_buffering
657 printf("final size %i\n",tmp.final_size);
658 tmp.buf=(char*)malloc(tmp.final_size);
659 if(tmp.buf!=NULL) {
660 pushedDatas.push_back(tmp);
661 } else {
662 Warn("could not allocate buffer of size %i\n",tmp.final_size);
663 }
664 }
665 }
666 Printf("nb buf %i\n",pushedDatas.size());
667 return;
668}
669
670//allocate a buffer at startup for the worst case
671//(every data send with same pedriod)
672//TODO: dynamic size depending on what gcs asks?
673void ui_com::UpdateDataToSendSize(void) {
674 send_mutex->GetMutex();
675 send_size = 3; // id(1)+period(2)
676 for (size_t i = 0; i < datasToSend.size(); i++) {
677 if (datasToSend[i] != NULL)
678 send_size += datasToSend[i]->SendSize();
679 }
680
681 // send_buffer=(char*)realloc((void*)send_buffer,send_size*sizeof(char));
682 if (send_buffer != NULL)
683 free(send_buffer);
684 send_buffer = (char *)malloc(send_size * sizeof(char));
685 send_mutex->ReleaseMutex();
686}
687
688void ui_com::UpdateDataToSendBufferSize(const SendData *obj) {
689 send_mutex->GetMutex();
690
691 PushedData_t* ptr=NULL;
692 //get buffer for this couple period/nb_buffering
693 for (size_t i = 0; i < pushedDatas.size(); i++) {
694 if (pushedDatas.at(i).period==obj->SendPeriod() && pushedDatas.at(i).nb_buffering==obj->NbBuffering()) {
695 ptr=&pushedDatas.at(i);
696 }
697 }
698 if(ptr==NULL) {
699 Err("no corresponding match for couple %i %i\n",obj->SendPeriod(),obj->NbBuffering());
700 return;
701 }
702
703 ptr->final_size=sizeof(char)+sizeof(uint16_t)+sizeof(uint16_t);//header+period+nb_buffering
704 ptr->final_size+=obj->SendSize()*obj->NbBuffering();
705 Printf("final %i\n",ptr->final_size);
706 free(ptr->buf);
707 ptr->buf=(char*)malloc(ptr->final_size);
708
709 send_mutex->ReleaseMutex();
710}
711
712void ui_com::RemoveSendData(const SendData *obj) {
713 // printf("remove_data_to_send %i\n",data_to_send.size());
714
715 send_mutex->GetMutex();
716 // on recupere l'id
717 for (size_t i = 0; i < datasToSend.size(); i++) {
718 if (datasToSend.at(i) == obj) {
719 datasToSend.erase(datasToSend.begin() + i);
720 resumeTimes.erase(resumeTimes.begin() + i);
721 // printf("remove_data_to_send %i ok\n",data_to_send.size());
722 break;
723 }
724 }
725 send_mutex->ReleaseMutex();
726
727 return;
728}
729
730void ui_com::Block(void) { send_mutex->GetMutex(); }
731
732void ui_com::UnBlock(void) { send_mutex->ReleaseMutex(); }
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