wme_test/wclient.c

   1 #include <errno.h>
   2 #include <sys/types.h>
   3 #include <sys/socket.h>
   4 #include <netinet/in.h>
   5 #include <arpa/inet.h>
   6 #include <netdb.h>
   7 #include <signal.h>
   8 #include <sys/wait.h>
   9 #include <stdio.h>
  10 #include <unistd.h>
  11 #include <fcntl.h>
  12 #include <time.h>
  13 #include <string.h>
  14 #include <pthread.h>
  15 #include <string.h>
  16 #include <stdlib.h>
  17 #include <stdbool.h>
  18 #include "common.h"
  19 #include <semaphore.h>
  20
  21 #ifdef WITH_FWP
  22 #include <fwp_proto.h>
  23 #endif
  24
  25 #define MAX_STREAMS  10
  26 #define MIN_GRANULARITY 100
  27
  28 unsigned opt_packet_size = 800;
  29 int opt_send_buf_size = -1;
  30 unsigned opt_period_usec = 10*MSEC_TO_USEC;
  31 unsigned opt_jitter = 0;
  32 char    *opt_output = "delay_stats";
  33 unsigned opt_count_sec = 0;
  34 unsigned opt_def_bandwidth = 200;
  35 unsigned opt_def_period_msec = 0;
  36 int opt_granularity_usec = MIN_GRANULARITY;
  37 bool opt_wait_for_queue_is_full; /* Don't gather any statistics until any queue is full */
  38
  39 bool some_queue_is_full = false;
  40 struct timespec reset_timestamp;
  41
  42 /* Locked when some queue is full to prevent multiple resets of
  43    statstics. */
  44 pthread_mutex_t queue_full_mutex = PTHREAD_MUTEX_INITIALIZER;
  45
  46 int ac_sockfd[AC_NUM];
  47
  48 struct receiver {
  49         pthread_t thread;
  50         unsigned received, last_received;
  51 } receivers[AC_NUM];
  52
  53 FILE* logfd;
  54 char* server_addr;
  55 char logfname[100];
  56
  57 /* maximal traffic delay in ms - 10 s*/
  58 #define MAX_DELAY_US 10000000
  59
  60 struct delay_stat {
  61         unsigned csc;           /* Client-server-client delay divided by 2 */
  62         unsigned cs;            /* Client-server delay */
  63         unsigned sc;            /* Server-client delay */
  64 };
  65
  66 struct delay_stat delay_stats[AC_NUM][MAX_DELAY_US/MIN_GRANULARITY];
  67 pthread_mutex_t delay_stats_mutex = PTHREAD_MUTEX_INITIALIZER;
  68
  69 /*struct ac_stats[AC_NUM] {
  70    unsigned long int min_trans_time;
  71    unsigned long int sum_trans_time;
  72    struct timespec   recv_timestamp;
  73    struct timespec   send_timestamp;
  74 };*/
  75
  76 struct stream {
  77         /* Input parameters */
  78         enum ac ac;             /*  */
  79         int bandwidth_bps;      /* bits per second */
  80         int jitter;             /* percent */
  81         /* Mulualy exclusive input parameters */
  82         int packet_size;
  83         long period_usec;       /* all time units are in microseconds */
  84
  85         /* Internal fields */
  86 #ifndef WITH_FWP
  87         struct sockaddr_in rem_addr;
  88 #else
  89         int vres_id;
  90 #endif
  91
  92         /* Statistics */
  93         pthread_mutex_t mutex;
  94         unsigned long long sent, really_sent, received;
  95 };
  96
  97 /*
  98 struct send_endpoint sepoint[] = {
  99         { .ac = AC_VO, .period_usec=200*MSEC_TO_USEC, .bandwidth_bps = 34*Kbit },
 100         { .ac = AC_VI, .period_usec=25*MSEC_TO_USEC, .bandwidth_bps =  480*Kbit },
 101         { .ac = AC_BE, .period_usec=40*MSEC_TO_USEC, .bandwidth_bps =  300*Kbit },
 102         { .ac = AC_BK, .period_usec=40*MSEC_TO_USEC, .bandwidth_bps =  300*Kbit },
 103 //      { .ac = AC_VI, .period_usec=17*MSEC_TO_USEC, .bandwidth_bps =  675*Kbit },
 104 };
 105 */
 106
 107 struct stream streams[MAX_STREAMS];
 108
 109 unsigned int nr_streams = 0;
 110
 111 sem_t sem_thread_finished;
 112
 113 bool exit_flag = false;
 114
 115 void stopper()
 116 {
 117         int i;
 118         exit_flag = true;
 119
 120         /* Interrupt all receivers */
 121         for (i=0; i < AC_NUM; i++) {
 122                 pthread_kill(receivers[i].thread, SIGUSR1);
 123         }
 124 }
 125
 126 void stream_to_text(char *stream_desc, size_t n, struct stream *stream, long long useconds)
 127 {
 128         char buf[3][12];
 129         char real[100];
 130
 131         if (useconds) {
 132                 snprintf(real, sizeof(real), "; real: %s sent %lld (%lld/s), received %lld (%lld/s)",
 133                          bandwidth_to_text(buf[0], (long long)stream->really_sent*stream->packet_size*8*SEC_TO_USEC/useconds),
 134                          stream->sent, stream->sent*SEC_TO_USEC/useconds,
 135                          stream->received, stream->received*SEC_TO_USEC/useconds);
 136         } else {
 137                 real[0]=0;
 138         }
 139
 140         snprintf(stream_desc, n, "%d: %s %s (%d bytes per %s +-%s, %d packets/s)%s",
 141                  stream-streams, ac_to_text[stream->ac], bandwidth_to_text(buf[0], stream->bandwidth_bps),
 142                  stream->packet_size, usec_to_text(buf[1], stream->period_usec),
 143                  usec_to_text(buf[2], stream->jitter*stream->period_usec/100),
 144                  (int)(SEC_TO_USEC/stream->period_usec), real);
 145 }
 146
 147 void save_results(int argc, char *argv[], int useconds)
 148 {
 149         int ac, i, maxi;
 150         const int mini = 3000/opt_granularity_usec;
 151         bool allzeros;
 152         unsigned send_count[AC_NUM];
 153
 154         fprintf(stderr, "Writing data to %s... ", logfname);
 155         fflush(stderr);
 156
 157         fprintf(logfd, "# Invoked as: ");
 158         for (i=0; i<argc; i++) fprintf(logfd, "%s ", argv[i]);
 159         fprintf(logfd, "\n");
 160
 161         if (useconds/SEC_TO_USEC != opt_count_sec) {
 162                 char buf[20];
 163                 usec_to_text(buf, useconds);
 164                 fprintf(logfd, "# Data gathered for %s.\n", buf);
 165         }
 166
 167         for (i = 0; i < nr_streams; i++) {
 168                 char stream_desc[200];
 169                 stream_to_text(stream_desc, sizeof(stream_desc), &streams[i], useconds);
 170                 fprintf(logfd, "# Stream %s\n", stream_desc);
 171         }
 172
 173         /* Find maximal delay */
 174         allzeros = true;
 175         for (maxi = MAX_DELAY_US/opt_granularity_usec - 1; maxi >= 0; maxi--) {
 176                 for (ac = 0; ac < AC_NUM; ac++) {
 177                         if ((delay_stats[ac][maxi].csc != 0) ||
 178                             (delay_stats[ac][maxi].cs != 0) ||
 179                             (delay_stats[ac][maxi].sc != 0))
 180                                 allzeros = false;
 181                 }
 182                 if (!allzeros) break;
 183         }
 184         maxi++;
 185         if (maxi < mini) maxi = mini;
 186
 187         /* Calculate total number of sent packets per AC */
 188         memset(send_count, 0, sizeof(send_count));
 189         for (i = 0; i < nr_streams; i++) {
 190                 ac = streams[i].ac;
 191                 send_count[ac] += streams[i].sent;
 192         }
 193
 194 #if 0
 195         /* Write pdf */
 196         for ( i = 0 ; i < maxi; i++) {
 197                 fprintf(logfd,"\n%f", i*opt_granularity_usec/1000.0);
 198                 for (ac = 0; ac < AC_NUM; ac++) {
 199                         if (sum[ac])
 200                                 val = (double)delay_stats[ac][i]*100.0 / sum[ac];
 201                         else val = -1; /* Don't display this ac */
 202                         fprintf(logfd," %lf", val);
 203                 }
 204         }
 205
 206         fprintf(logfd,"\n\n");
 207 #endif
 208
 209         fprintf(logfd,"## Format: msec csc%% cs%% sc%%\n");
 210
 211         /* Write PDF */
 212         for (ac = 0; ac < AC_NUM; ac++) {
 213                 struct delay_stat integral = {0,0,0}, last = {-1,-1,-1};
 214
 215                 fprintf(logfd,"%f %f %f %f\n", 0.0, 0.0, 0.0, 0.0);
 216
 217                 if (send_count[ac] != 0) {
 218                         i=0;
 219                         while ((delay_stats[ac][i].csc == 0) &&
 220                                (delay_stats[ac][i].cs == 0) &&
 221                                (delay_stats[ac][i].sc == 0)) i++;
 222
 223                         for (i++; i < maxi+1; i++) {
 224                                 if (memcmp(&last, &integral, sizeof(last))) {
 225                                         fprintf(logfd,"%f %f %f %f\n", i*opt_granularity_usec/1000.0,
 226                                                 (double)integral.csc*100.0 / send_count[ac],
 227                                                 (double)integral.cs *100.0 / send_count[ac],
 228                                                 (double)integral.sc *100.0 / send_count[ac]
 229                                                 );
 230                                         last = integral;
 231                                 }
 232                                 if (i>0) {
 233                                         integral.csc += delay_stats[ac][i-1].csc;
 234                                         integral.sc  += delay_stats[ac][i-1].sc;
 235                                         integral.cs  += delay_stats[ac][i-1].cs;
 236                                 }
 237                         }
 238                 }
 239                 fprintf(logfd,"\n\n");
 240         }
 241
 242         fprintf(stderr, "finished.\n");
 243         fclose(logfd);
 244
 245         exit(0);
 246 }
 247
 248 static inline
 249 void timespec_add (struct timespec *sum, const struct timespec *left,
 250               const struct timespec *right)
 251 {
 252         sum->tv_sec = left->tv_sec + right->tv_sec;
 253         sum->tv_nsec = left->tv_nsec + right->tv_nsec;
 254
 255         if (sum->tv_nsec >= 1000000000){
 256                 ++sum->tv_sec;
 257                 sum->tv_nsec -= 1000000000;
 258         }
 259 }
 260
 261 static inline
 262 void timespec_sub (struct timespec *diff, const struct timespec *left,
 263               const struct timespec *right)
 264 {
 265         diff->tv_sec = left->tv_sec - right->tv_sec;
 266         diff->tv_nsec = left->tv_nsec - right->tv_nsec;
 267
 268         if (diff->tv_nsec < 0){
 269                   --diff->tv_sec;
 270                   diff->tv_nsec += 1000000000;
 271         }
 272 }
 273
 274 static inline long long timespec_sub_usec(const struct timespec *left,
 275                                           const struct timespec *right)
 276 {
 277         struct timespec result;
 278         timespec_sub(&result, left, right);
 279         return (long long)result.tv_sec * SEC_TO_USEC +
 280                 result.tv_nsec / USEC_TO_NSEC;
 281 }
 282
 283 static inline long long timespec2usec(const struct timespec *ts)
 284 {
 285         return ts->tv_sec * SEC_TO_USEC + ts->tv_nsec / USEC_TO_NSEC;
 286 }
 287
 288
 289 int create_ac_socket(unsigned int ac)
 290 {
 291         int sockfd;
 292         unsigned int yes=1, tos;
 293
 294
 295         if ((sockfd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
 296         {
 297                 perror("Unable to open socket");
 298                 return -1;
 299         }
 300         if (fcntl(sockfd, F_SETFL, O_NONBLOCK) != 0) {
 301                 perror("set non-blocking socket");
 302                 return -1;
 303         }
 304         if (setsockopt(sockfd,SOL_SOCKET,SO_REUSEADDR,&yes,sizeof(int)) == -1) {
 305                 perror("Unable to set socket");
 306                 return -1;
 307         }
 308
 309         if (opt_send_buf_size >= 0) {
 310                 if (setsockopt(sockfd,SOL_SOCKET,SO_SNDBUF,&opt_send_buf_size,sizeof(opt_send_buf_size)) == -1) {
 311                         perror("Unable to set socket buffer size");
 312                         return -1;
 313                 }
 314         }
 315
 316
 317         //tos = ((AC_NUM - ac) *2 - 1)*32;
 318         tos = ac_to_tos[ac];
 319         if (setsockopt(sockfd, SOL_IP, IP_TOS, &tos, sizeof(tos))) {
 320                 perror("Unable to set TOS");
 321                 close(sockfd);
 322                 return -1;
 323         }
 324
 325         return sockfd;
 326 }
 327
 328 void empty_handler()
 329 {
 330 }
 331
 332 void reset_statistics()
 333 {
 334         int i;
 335         for (i = 0; i < nr_streams; i++) {
 336                 pthread_mutex_lock(&streams[i].mutex);
 337                 streams[i].sent = 0;
 338                 streams[i].really_sent = 0;
 339                 streams[i].received = 0;
 340                 pthread_mutex_unlock(&streams[i].mutex);
 341         }
 342         pthread_mutex_lock(&delay_stats_mutex);
 343         clock_gettime(CLOCK_REALTIME, &reset_timestamp);
 344         memset(delay_stats, 0, sizeof(delay_stats));
 345         pthread_mutex_unlock(&delay_stats_mutex);
 346 }
 347
 348 void* receiver(void* queue)
 349 {
 350         struct msg_t    msg;
 351         struct  sockaddr_in rem_addr;
 352         int     mlen, ret;
 353         unsigned int ac, rem_addr_length;
 354         long long int trans_time_usec, client_to_server_usec, server_to_client_usec;
 355         long long int min_trans_time;
 356         struct timespec send_timestamp, server_timestamp, recv_timestamp;
 357         fd_set fdset;
 358
 359         min_trans_time = ~0;
 360
 361         block_signals();
 362         set_rt_prio(99);
 363
 364         ac = (int)queue;
 365         rem_addr_length = sizeof(rem_addr);
 366         FD_ZERO(&fdset);
 367         while (!exit_flag) {
 368                 FD_SET(ac_sockfd[ac], &fdset);
 369                 ret = select(ac_sockfd[ac]+1, &fdset, NULL, NULL, NULL);
 370                 if (ret < 0) {
 371                         if (errno == EINTR) continue;
 372                         perror("receiver select");
 373                         goto out;
 374                 }
 375                 mlen = recvfrom(ac_sockfd[ac], &msg, sizeof(msg), 0,
 376                                 (struct sockaddr*)&rem_addr, &rem_addr_length);
 377                 if (mlen < 0) {
 378                         perror("Chyba pri prijimani pozadavku");
 379                         goto out;
 380                 }
 381                 clock_gettime(CLOCK_REALTIME,&recv_timestamp);
 382                 send_timestamp = msg.send_timestamp;
 383                 server_timestamp = msg.sendback_timestamp;
 384
 385                 /* Check whether this message was sent after reset_statistics() */
 386
 387                 if ((ret = timespec_sub_usec(&send_timestamp, &reset_timestamp)) < 0) {
 388                         continue; /* If so, don't count it */
 389                 }
 390
 391                 trans_time_usec = timespec_sub_usec(&recv_timestamp ,&send_timestamp) / 2;
 392                 client_to_server_usec = timespec_sub_usec(&server_timestamp, &send_timestamp);
 393                 server_to_client_usec = timespec_sub_usec(&recv_timestamp, &server_timestamp);
 394
 395                 pthread_mutex_lock(&delay_stats_mutex);
 396                 if (trans_time_usec < MAX_DELAY_US) {
 397                         delay_stats[ac][trans_time_usec/opt_granularity_usec].csc++;
 398                 }
 399                 if (client_to_server_usec < MAX_DELAY_US && client_to_server_usec >= 0) {
 400                         delay_stats[ac][client_to_server_usec/opt_granularity_usec].cs++;
 401                 }
 402                 if (server_to_client_usec < MAX_DELAY_US && server_to_client_usec >= 0) {
 403                         delay_stats[ac][server_to_client_usec/opt_granularity_usec].sc++;
 404                 }
 405                 pthread_mutex_unlock(&delay_stats_mutex);
 406
 407                 receivers[ac].received++;
 408
 409                 pthread_mutex_lock(&streams[msg.stream].mutex);
 410                 streams[msg.stream].received++;
 411                 pthread_mutex_unlock(&streams[msg.stream].mutex);
 412
 413                 /*if (trans_time_nsec < min_trans_time)
 414                         min_trans_time = trans_time_nsec;*/
 415                 /*printf("seqn= %lu tos= %d start= %lu(s).%lu(ns)"\
 416                          "stop= %lu(s).%lu(ns)\n trans_time = %lums\n",\
 417                          msg.seqn, msg.tos, send_timestamp.tv_sec,\
 418                          send_timestamp.tv_nsec,recv_timestamp.tv_sec,\
 419                          recv_timestamp.tv_nsec, trans_time_msec); */
 420         }
 421 out:
 422         sem_post(&sem_thread_finished);
 423         return NULL;
 424 }
 425
 426 /**
 427  * Send a packet.
 428  *
 429  * @return -1 in case of error, 1 in case of sucessfull send and 0
 430  *         when all buffers are full.
 431  */
 432 static inline int
 433 send_packet(struct stream* stream, union msg_buff* buff)
 434 {
 435         int ret = 1;
 436         while (sendto(ac_sockfd[stream->ac], buff, stream->packet_size, 0,
 437                       (struct sockaddr*)&stream->rem_addr, sizeof(stream->rem_addr)) < 0) {
 438                 if (errno == EINTR) continue;
 439                 if (errno == EAGAIN) {
 440                         if (opt_wait_for_queue_is_full &&
 441                             !some_queue_is_full &&
 442                             /* We use mutex as atomic test and set */
 443                             (pthread_mutex_trylock(&queue_full_mutex) != EBUSY)) {
 444                                 some_queue_is_full = true;
 445                                 reset_statistics();
 446                         }
 447                         ret = 0;
 448                         break;
 449                 } else {
 450                         perror("Error while sending");
 451                         ret = -1;
 452                         break;
 453                 }
 454         }
 455         return ret;
 456 }
 457
 458 static inline void
 459 wait_for_next_send(struct stream* stream, struct timespec *last_send_time)
 460 {
 461         struct timespec time_to_wait, current_time, period, interval;
 462         unsigned period_usec = stream->period_usec;
 463
 464         /*           |~~~+~~~| jitter interval (width = 2*stream->jitter percentage from period)*/
 465         /* |-------------|     nominal period*/
 466         if (stream->jitter) {
 467                 period.tv_nsec = USEC_TO_NSEC*(period_usec*(100-stream->jitter)/100
 468                                                + rand() % (2*period_usec*stream->jitter/100));
 469         } else {
 470                 period.tv_nsec = USEC_TO_NSEC*(period_usec);
 471         }
 472         period.tv_sec = 0;
 473
 474         timespec_add(&time_to_wait, last_send_time, &period);
 475         clock_gettime(CLOCK_REALTIME,&current_time);
 476         timespec_sub(&interval,&time_to_wait,&current_time);
 477         nanosleep(&interval,NULL);
 478 }
 479
 480
 481 void* sender(void* arg)
 482 {
 483         union msg_buff buff;
 484         unsigned long int seqn;
 485         struct stream* stream = (struct stream*) arg;
 486         char stream_desc[100];
 487         int ret;
 488
 489         stream_to_text(stream_desc, sizeof(stream_desc), stream, 0);
 490         printf("%s\n", stream_desc);
 491
 492         if (stream->bandwidth_bps == 0)
 493                 goto out;
 494
 495         seqn = 0;
 496
 497         block_signals();
 498         set_rt_prio(90-stream->ac);
 499
 500         while (!exit_flag) {
 501
 502 /*              buff.msg.seqn = seqn++; */
 503 /*              buff.msg.tos = ac_to_tos[stream->ac]; */
 504                 buff.msg.stream = stream-streams;
 505
 506                 clock_gettime(CLOCK_REALTIME,&buff.msg.send_timestamp);
 507
 508                 ret = send_packet(stream, &buff);
 509                 if (ret < 0) {
 510                         goto out;
 511                 }
 512
 513                 pthread_mutex_lock(&stream->mutex);
 514                 stream->sent++;
 515                 if (ret > 0)
 516                         stream->really_sent++;
 517                 pthread_mutex_unlock(&stream->mutex);
 518
 519 #ifdef DEBUG
 520                 printf("%d", stream->ac);
 521                 fflush(stdout);
 522 #endif
 523
 524                 wait_for_next_send(stream, &buff.msg.send_timestamp);
 525         }
 526 out:
 527         sem_post(&sem_thread_finished);
 528         return NULL;
 529 }
 530
 531 #ifdef WITH_FWP
 532 static int negotiate_contract_for_stream(struct stream *stream)
 533 {
 534         struct fwp_contract contr;
 535         int vres_id;
 536         int ret;
 537
 538         contr->budget = stream->packet_size;
 539         contr->period_usec = stream->period_usec;
 540         ret = fwp_contract_negotiate(&contr, &vres_id);
 541         if (ret == 0) {
 542                 if (contract->status == FWP_CNT_NEGOTIATED) {
 543                         stream->vres_id = vres_id;
 544                 } else {
 545                         stream->vres_id = -1;
 546                 }
 547         }
 548         return ret;
 549 }
 550 #else
 551 #define negotiate_contract_for_stream(s) 0
 552
 553 void create_stream_endpoint(struct stream *stream)
 554 {
 555         struct hostent* ph;
 556
 557         memset(&stream->rem_addr,0, sizeof(stream->rem_addr));
 558
 559         stream->rem_addr.sin_family = AF_INET;
 560         ph = gethostbyname(server_addr);
 561         if (ph)
 562                 stream->rem_addr.sin_addr = *((struct in_addr *)ph->h_addr);
 563         else {
 564                 perror("Unknown server");
 565                 exit(1);
 566         }
 567         stream->rem_addr.sin_port = htons(BASE_PORT + stream->ac);
 568 }
 569 #endif
 570
 571 static inline void
 572 calc_stream_params(struct stream *stream)
 573 {
 574         int packet_size;
 575         unsigned period_usec;
 576         int bandwidth;
 577         int ret;
 578
 579         /* If some parameters are not set explicitely, use default values. */
 580         if (stream->bandwidth_bps < 0) stream->bandwidth_bps = opt_def_bandwidth * Kbit;
 581         if (stream->packet_size < 0) stream->packet_size = opt_packet_size;
 582         if (stream->period_usec < 0) stream->period_usec = opt_def_period_msec * MSEC_TO_USEC;
 583
 584         bandwidth = stream->bandwidth_bps;
 585
 586         /* Avoid arithmetic exception. Server thread will exit if
 587            stream->bandwidth_bps == 0. */
 588         if (bandwidth == 0) bandwidth = 1;
 589
 590         if (stream->packet_size) {
 591                 packet_size = stream->packet_size;
 592                 period_usec = SEC_TO_USEC*packet_size*8/bandwidth;
 593                 if (period_usec == 0) period_usec = 1;
 594         } else if (stream->period_usec) {
 595                 period_usec = stream->period_usec;
 596                 packet_size = (long long)bandwidth/8 * period_usec/SEC_TO_USEC;
 597         } else {
 598                 char buf[200];
 599                 stream_to_text(buf, sizeof(buf), stream, 0);
 600                 fprintf(stderr, "Neither packet size nor period was specified for a stream %s\n", buf);
 601                 exit(1);
 602         }
 603
 604         if (packet_size < sizeof(struct msg_t)) {
 605                 fprintf(stderr, "Packet size too small (min %d)\n", sizeof(struct msg_t));
 606                 exit(1);
 607         }
 608
 609         stream->packet_size = packet_size;
 610         stream->period_usec = period_usec;
 611         stream->jitter = opt_jitter;
 612
 613         ret = negotiate_contract_for_stream(stream);
 614         if (ret == 0) {
 615                 create_stream_endpoint(stream);
 616         } else {
 617                 char buf[200];
 618                 stream_to_text(buf, sizeof(buf), stream, 0);
 619                 fprintf(stderr, "Contract hasn't been accepted: %s\n", buf);
 620                 stream->bandwidth_bps = 0;
 621         }
 622 }
 623
 624 /**
 625  * Parse -b parameter.
 626  *
 627  * @param params String to parse
 628  *
 629  * @return NULL in case of success, pointer to a problematic character
 630  *         on error.
 631  */
 632 char* parse_bandwidths(char *params)
 633 {
 634         struct stream *sp = &streams[nr_streams];
 635
 636         while (*params && nr_streams < MAX_STREAMS) {
 637                 char *ac_ids[AC_NUM] = { [AC_VO]="VO", [AC_VI]="VI", [AC_BE]="BE", [AC_BK]="BK" };
 638                 int i;
 639                 char *next_char;
 640
 641                 if (strlen(params) < 2)
 642                         return params;
 643                 for (i=0; i<AC_NUM; i++) {
 644                         if (strncmp(params, ac_ids[i], 2) == 0) {
 645                                 sp->ac = i;
 646                                 params+=strlen(ac_ids[i]);
 647                                 break;
 648                         }
 649                 }
 650                 if (i==AC_NUM)
 651                         return params;
 652
 653                 long bw;
 654                 if (*params == ':') {
 655                         params++;
 656
 657                         bw = strtol(params, &next_char, 10);
 658                         if (next_char == params)
 659                                 return params;
 660                         params = next_char;
 661                 } else
 662                         bw = -1;
 663
 664                 sp->bandwidth_bps = bw*Kbit;
 665
 666                 long period = 0;
 667                 long packet_size = 0;
 668                 if (*params == '@') {
 669                         params++;
 670                         period = strtol(params, &next_char, 10);
 671                         if (period == 0)
 672                                 return params;
 673                         params = next_char;
 674                 }
 675                 else {
 676                         if (*params == '/') {
 677                                 params++;
 678                                 packet_size = strtol(params, &next_char, 10);
 679                                 if (packet_size == 0)
 680                                         return params;
 681                                 params = next_char;
 682                         } else {
 683                                 packet_size = -1;
 684                                 period = -1;
 685                         }
 686                 }
 687                 sp->period_usec = period*MSEC_TO_USEC;
 688                 sp->packet_size = packet_size;
 689
 690
 691
 692                 if (*params != '\0' && *params != ',')
 693                         return params;
 694                 nr_streams++;
 695                 sp++;
 696                 if (*params == ',')
 697                         params++;
 698         }
 699         return NULL;
 700 }
 701
 702 int main(int argc, char *argv[])
 703 {
 704         int ac, i, rc, seconds;
 705         pthread_attr_t attr;
 706         pthread_t thread;
 707         char opt;
 708
 709
 710         while ((opt = getopt(argc, argv, "B:b:c:g:j:o:qQ:s:T:")) != -1) {
 711                 switch (opt) {
 712                         case 'B':
 713                                 opt_def_bandwidth = atoi(optarg);
 714                                 break;
 715                         case 'b': {
 716                                 char *error;
 717                                 error = parse_bandwidths(optarg);
 718                                 if (error != NULL) {
 719                                         if (*error == '\0')
 720                                                 fprintf(stderr, "Bandwidth parse error - string to short\n");
 721                                         else
 722                                                 fprintf(stderr, "Bandwidth parse error at '%s'\n", error);
 723                                         exit(1);
 724                                 }
 725                                 break;
 726                         }
 727                         case 'c':
 728                                 opt_count_sec = atoi(optarg);
 729                                 break;
 730                         case 'g':
 731                                 opt_granularity_usec = atoi(optarg);
 732                                 if (opt_granularity_usec < MIN_GRANULARITY) {
 733                                         fprintf(stderr, "Granulatiry too small (min %d)!\n", MIN_GRANULARITY);
 734                                         exit(1);
 735                                 }
 736                                 break;
 737                         case 'j':
 738                                 opt_jitter = atoi(optarg);
 739                                 break;
 740                         case 'o':
 741                                 opt_output = optarg;
 742                                 break;
 743                         case 'Q':
 744                                 opt_send_buf_size = atoi(optarg);
 745                                 break;
 746                         case 'q':
 747                                 opt_wait_for_queue_is_full = true;
 748                                 break;
 749                         case 's':
 750                                 opt_packet_size = atoi(optarg);
 751                                 break;
 752                         case 'T':
 753                                 opt_def_period_msec = atoi(optarg);
 754                                 break;
 755                         default:
 756                                 fprintf(stderr, "Usage: %s [ options ] server_addr\n\n", argv[0]);
 757                                 fprintf(stderr, "Options:\n");
 758                                 fprintf(stderr, "    -B  default bandwidth for -b option [kbit]\n");
 759                                 fprintf(stderr, "    -b  bandwidth of streams (VO|VI|BE|BK)[:<kbit>][@<msec> or /<bytes>][,...]\n");
 760                                 fprintf(stderr, "    -c  count (number of seconds to run)\n");
 761                                 fprintf(stderr, "    -g  histogram granularity [usec]\n");
 762                                 fprintf(stderr, "    -j  send jitter (0-100) [%%]\n");
 763                                 fprintf(stderr, "    -o  output filename (.dat will be appended)\n");
 764                                 fprintf(stderr, "    -q  gather statistics only after some queue becomes full\n");
 765                                 fprintf(stderr, "    -Q  <bytes> set size for socket send buffers\n");
 766                                 fprintf(stderr, "    -s  size of data payload in packets [bytes] (default: %d)\n", opt_packet_size);
 767                                 fprintf(stderr, "    -T  default period for -b option [msec]\n");
 768                                 exit(1);
 769                 }
 770         }
 771         if (opt_packet_size && opt_def_period_msec) {
 772                 fprintf(stderr, "Error: Nonzero -T and -s can't be used together!.\n");
 773                 exit(1);
 774         }
 775
 776         if (optind < argc) {
 777                 server_addr = argv[optind];
 778         } else {
 779                 fprintf(stderr, "Expected server address argument\n");
 780                 exit(1);
 781         }
 782
 783         if (nr_streams == 0)
 784                 parse_bandwidths("BE");
 785
 786         pthread_attr_init(&attr);
 787
 788         snprintf(logfname, sizeof(logfname), "%s.dat", opt_output);
 789
 790         if ((logfd = fopen(logfname,"w+")) == NULL) {
 791                 fprintf(stderr,"Can not open %s\n", logfname);
 792                 exit(1);
 793         }
 794         if (signal(SIGTERM, stopper) == SIG_ERR) {
 795                 perror("Error in signal registration");
 796                 exit(1);
 797         }
 798
 799         if (signal(SIGINT, stopper) == SIG_ERR) {
 800                 perror("Signal handler registration error");
 801                 exit(1);
 802         }
 803
 804         struct sigaction sa;
 805         sa.sa_handler = empty_handler;
 806         sa.sa_flags = 0;        /* don't restart syscalls */
 807
 808         if (sigaction(SIGUSR1, &sa, NULL) < 0) {
 809                 perror("sigaction error");
 810                 exit(1);
 811         }
 812
 813         sem_init(&sem_thread_finished, 0, 0);
 814
 815         reset_statistics();
 816
 817         /* create four receivers each per AC */
 818         for (ac = AC_NUM - 1; ac >= 0; ac--) {
 819                 ac_sockfd[ac] = create_ac_socket(ac);
 820                 if (ac_sockfd[ac] < 0) {
 821                         return 1;
 822                 }
 823                 rc = pthread_create(&receivers[ac].thread, &attr, receiver, (void*) ac);
 824                 if (rc) {
 825                         fprintf(stderr, "Error while creating receiver %d\n",rc);
 826                         return 1;
 827                 }
 828         }
 829
 830         /* create sendpoints */
 831         for (i = 0; i < nr_streams; i++) {
 832                 struct stream *s = &streams[i];
 833                 pthread_mutex_init(&s->mutex, NULL);
 834                 calc_stream_params(s);
 835                 rc = pthread_create(&thread, &attr, sender, (void*) s);
 836                 if (rc) {
 837                         fprintf(stderr, "Error while creating sender %d\n",rc);
 838                         return 1;
 839                 }
 840         }
 841
 842         seconds = 0;
 843         while (!exit_flag) {
 844                 sleep(1);
 845                 seconds++;
 846                 fprintf(stderr, "\r%3ds", seconds);
 847                 for (ac = 0; ac < AC_NUM; ac++) {
 848                         int delta = receivers[ac].received - receivers[ac].last_received;
 849                         receivers[ac].last_received = receivers[ac].received;
 850                         fprintf(stderr, " %s %5d %4d/s", ac_to_text[ac], receivers[ac].received, delta);
 851                 }
 852                 fflush(stderr);
 853                 if (seconds == opt_count_sec)
 854                         stopper();
 855         }
 856
 857         fprintf(stderr, "\nWaiting for threads to finish\n");
 858         /* Wait for all threads to finish */
 859         for (i=0; i < nr_streams + AC_NUM; i++) {
 860                 sem_wait(&sem_thread_finished);
 861         }
 862         struct timespec end_timestamp, measure_length;
 863         clock_gettime(CLOCK_REALTIME,&end_timestamp);
 864         timespec_sub(&measure_length, &end_timestamp, &reset_timestamp);
 865
 866         save_results(argc, argv, timespec2usec(&measure_length));
 867
 868         return 0;
 869 }