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