git.sesse.net Git - vlc/blob - src/misc/stats.c

   1 /*****************************************************************************
   2  * stats.c: Statistics handling
   3  *****************************************************************************
   4  * Copyright (C) 2006 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdio.h>                                               /* required */
  28
  29 #include <vlc/vlc.h>
  30
  31 #include "input/input_internal.h"
  32
  33 /*****************************************************************************
  34  * Local prototypes
  35  *****************************************************************************/
  36 static int CounterUpdate( vlc_object_t *p_this,
  37                           counter_t *p_counter,
  38                           vlc_value_t val, vlc_value_t * );
  39 static void TimerDump( vlc_object_t *p_this, counter_t *p_counter, vlc_bool_t);
  40
  41 /*****************************************************************************
  42  * Exported functions
  43  *****************************************************************************/
  44
  45 /**
  46  * Create a statistics counter
  47  * \param p_this a VLC object
  48  * \param i_type the type of stored data. One of VLC_VAR_STRING,
  49  * VLC_VAR_INTEGER, VLC_VAR_FLOAT
  50  * \param i_compute_type the aggregation type. One of STATS_LAST (always
  51  * keep the last value), STATS_COUNTER (increment by the passed value),
  52  * STATS_MAX (keep the maximum passed value), STATS_MIN, or STATS_DERIVATIVE
  53  * (keep a time derivative of the value)
  54  */
  55 counter_t * __stats_CounterCreate( vlc_object_t *p_this,
  56                                    int i_type, int i_compute_type )
  57 {
  58     counter_t *p_counter = (counter_t*) malloc( sizeof( counter_t ) ) ;
  59
  60     p_counter->i_compute_type = i_compute_type;
  61     p_counter->i_type = i_type;
  62     p_counter->i_samples = 0;
  63     p_counter->pp_samples = NULL;
  64     p_counter->psz_name = NULL;
  65
  66     p_counter->update_interval = 0;
  67     p_counter->last_update = 0;
  68
  69     return p_counter;
  70 }
  71
  72 /** Update a counter element with new values
  73  * \param p_this a VLC object
  74  * \param p_counter the counter to update
  75  * \param val the vlc_value union containing the new value to aggregate. For
  76  * more information on how data is aggregated, \see __stats_Create
  77  * \param val_new a pointer that will be filled with new data
  78  */
  79 int __stats_Update( vlc_object_t *p_this, counter_t *p_counter,
  80                     vlc_value_t val, vlc_value_t *val_new )
  81 {
  82     if( !p_this->p_libvlc->b_stats || !p_counter ) return VLC_EGENERIC;
  83     return CounterUpdate( p_this, p_counter, val, val_new );
  84 }
  85
  86 /** Get the aggregated value for a counter
  87  * \param p_this an object
  88  * \param p_counter the counter
  89  * \param val a pointer to an initialized vlc_value union. It will contain the
  90  * retrieved value
  91  * \return an error code
  92  */
  93 int __stats_Get( vlc_object_t *p_this, counter_t *p_counter, vlc_value_t *val )
  94 {
  95     if( !p_this->p_libvlc->b_stats || !p_counter || p_counter->i_samples == 0 )
  96     {
  97         val->i_int = val->f_float = 0.0;
  98         return VLC_EGENERIC;
  99     }
 100
 101     switch( p_counter->i_compute_type )
 102     {
 103     case STATS_LAST:
 104     case STATS_MIN:
 105     case STATS_MAX:
 106     case STATS_COUNTER:
 107         *val = p_counter->pp_samples[0]->value;
 108         break;
 109     case STATS_DERIVATIVE:
 110         /* Not ready yet */
 111         if( p_counter->i_samples < 2 )
 112         {
 113             val->i_int = 0; val->f_float = 0.0;
 114             return VLC_EGENERIC;
 115         }
 116         if( p_counter->i_type == VLC_VAR_INTEGER )
 117         {
 118             float f = ( p_counter->pp_samples[0]->value.i_int -
 119                         p_counter->pp_samples[1]->value.i_int ) /
 120                     (float)(  p_counter->pp_samples[0]->date -
 121                               p_counter->pp_samples[1]->date );
 122             val->i_int = (int)f;
 123         }
 124         else
 125         {
 126             float f = (float)( p_counter->pp_samples[0]->value.f_float -
 127                                p_counter->pp_samples[1]->value.f_float ) /
 128                       (float)( p_counter->pp_samples[0]->date -
 129                                p_counter->pp_samples[1]->date );
 130             val->f_float = f;
 131         }
 132         break;
 133     }
 134     return VLC_SUCCESS;;
 135 }
 136
 137 void stats_ComputeInputStats( input_thread_t *p_input, input_stats_t *p_stats )
 138 {
 139     if( !p_input->p_libvlc->b_stats ) return;
 140
 141     vlc_mutex_lock( &p_input->p->counters.counters_lock );
 142     vlc_mutex_lock( &p_stats->lock );
 143
 144     /* Input */
 145     stats_GetInteger( p_input, p_input->p->counters.p_read_packets,
 146                       &p_stats->i_read_packets );
 147     stats_GetInteger( p_input, p_input->p->counters.p_read_bytes,
 148                       &p_stats->i_read_bytes );
 149     stats_GetFloat( p_input, p_input->p->counters.p_input_bitrate,
 150                     &p_stats->f_input_bitrate );
 151     stats_GetInteger( p_input, p_input->p->counters.p_demux_read,
 152                       &p_stats->i_demux_read_bytes );
 153     stats_GetFloat( p_input, p_input->p->counters.p_demux_bitrate,
 154                     &p_stats->f_demux_bitrate );
 155
 156     /* Decoders */
 157     stats_GetInteger( p_input, p_input->p->counters.p_decoded_video,
 158                       &p_stats->i_decoded_video );
 159     stats_GetInteger( p_input, p_input->p->counters.p_decoded_audio,
 160                       &p_stats->i_decoded_audio );
 161
 162     /* Sout */
 163     if( p_input->p->counters.p_sout_send_bitrate )
 164     {
 165         stats_GetInteger( p_input, p_input->p->counters.p_sout_sent_packets,
 166                           &p_stats->i_sent_packets );
 167         stats_GetInteger( p_input, p_input->p->counters.p_sout_sent_bytes,
 168                           &p_stats->i_sent_bytes );
 169         stats_GetFloat  ( p_input, p_input->p->counters.p_sout_send_bitrate,
 170                           &p_stats->f_send_bitrate );
 171     }
 172
 173     /* Aout */
 174     stats_GetInteger( p_input, p_input->p->counters.p_played_abuffers,
 175                       &p_stats->i_played_abuffers );
 176     stats_GetInteger( p_input, p_input->p->counters.p_lost_abuffers,
 177                       &p_stats->i_lost_abuffers );
 178
 179     /* Vouts */
 180     stats_GetInteger( p_input, p_input->p->counters.p_displayed_pictures,
 181                       &p_stats->i_displayed_pictures );
 182     stats_GetInteger( p_input, p_input->p->counters.p_lost_pictures,
 183                       &p_stats->i_lost_pictures );
 184
 185     vlc_mutex_unlock( &p_stats->lock );
 186     vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 187 }
 188
 189 void stats_ReinitInputStats( input_stats_t *p_stats )
 190 {
 191     vlc_mutex_lock( &p_stats->lock );
 192     p_stats->i_read_packets = p_stats->i_read_bytes =
 193     p_stats->f_input_bitrate = p_stats->f_average_input_bitrate =
 194     p_stats->i_demux_read_packets = p_stats->i_demux_read_bytes =
 195     p_stats->f_demux_bitrate = p_stats->f_average_demux_bitrate =
 196     p_stats->i_displayed_pictures = p_stats->i_lost_pictures =
 197     p_stats->i_played_abuffers = p_stats->i_lost_abuffers =
 198     p_stats->i_decoded_video = p_stats->i_decoded_audio =
 199     p_stats->i_sent_bytes = p_stats->i_sent_packets = p_stats->f_send_bitrate
 200      = 0;
 201     vlc_mutex_unlock( &p_stats->lock );
 202 }
 203
 204 void stats_DumpInputStats( input_stats_t *p_stats  )
 205 {
 206     vlc_mutex_lock( &p_stats->lock );
 207     /* f_bitrate is in bytes / microsecond
 208      * *1000 => bytes / millisecond => kbytes / seconds */
 209     fprintf( stderr, "Input : %i (%i bytes) - %f kB/s - "
 210                      "Demux : %i (%i bytes) - %f kB/s\n"
 211                      " - Vout : %i/%i - Aout : %i/%i - Sout : %f\n",
 212                     p_stats->i_read_packets, p_stats->i_read_bytes,
 213                     p_stats->f_input_bitrate * 1000,
 214                     p_stats->i_demux_read_packets, p_stats->i_demux_read_bytes,
 215                     p_stats->f_demux_bitrate * 1000,
 216                     p_stats->i_displayed_pictures, p_stats->i_lost_pictures,
 217                     p_stats->i_played_abuffers, p_stats->i_lost_abuffers,
 218                     p_stats->f_send_bitrate );
 219     vlc_mutex_unlock( &p_stats->lock );
 220 }
 221
 222 void __stats_ComputeGlobalStats( vlc_object_t *p_obj, global_stats_t *p_stats )
 223 {
 224     vlc_list_t *p_list;
 225     int i_index;
 226
 227     if( !p_obj->p_libvlc->b_stats ) return;
 228
 229     vlc_mutex_lock( &p_stats->lock );
 230
 231     p_list = vlc_list_find( p_obj, VLC_OBJECT_INPUT, FIND_ANYWHERE );
 232     if( p_list )
 233     {
 234         float f_total_in = 0, f_total_out = 0,f_total_demux = 0;
 235         for( i_index = 0; i_index < p_list->i_count ; i_index ++ )
 236         {
 237             float f_in = 0, f_out = 0, f_demux = 0;
 238             input_thread_t *p_input = (input_thread_t *)
 239                              p_list->p_values[i_index].p_object;
 240             vlc_mutex_lock( &p_input->p->counters.counters_lock );
 241             stats_GetFloat( p_obj, p_input->p->counters.p_input_bitrate, &f_in );
 242             if( p_input->p->counters.p_sout_send_bitrate )
 243                 stats_GetFloat( p_obj, p_input->p->counters.p_sout_send_bitrate,
 244                                     &f_out );
 245             stats_GetFloat( p_obj, p_input->p->counters.p_demux_bitrate,
 246                                 &f_demux );
 247             vlc_mutex_unlock( &p_input->p->counters.counters_lock );
 248             f_total_in += f_in; f_total_out += f_out;f_total_demux += f_demux;
 249         }
 250         p_stats->f_input_bitrate = f_total_in;
 251         p_stats->f_output_bitrate = f_total_out;
 252         p_stats->f_demux_bitrate = f_total_demux;
 253         vlc_list_release( p_list );
 254     }
 255
 256     vlc_mutex_unlock( &p_stats->lock );
 257 }
 258
 259 void stats_ReinitGlobalStats( global_stats_t *p_stats )
 260 {
 261     vlc_mutex_lock( &p_stats->lock );
 262     p_stats->f_input_bitrate = p_stats->f_output_bitrate = 0.0;
 263     vlc_mutex_unlock( &p_stats->lock );
 264 }
 265
 266
 267 void __stats_TimerStart( vlc_object_t *p_obj, const char *psz_name,
 268                          unsigned int i_id )
 269 {
 270     int i;
 271     counter_t *p_counter = NULL;
 272     if( !p_obj->p_libvlc->b_stats ) return;
 273     vlc_mutex_lock( &p_obj->p_libvlc->timer_lock );
 274
 275     for( i = 0 ; i < p_obj->p_libvlc->i_timers; i++ )
 276     {
 277         if( p_obj->p_libvlc->pp_timers[i]->i_id == i_id )
 278         {
 279             p_counter = p_obj->p_libvlc->pp_timers[i];
 280             break;
 281         }
 282     }
 283     if( !p_counter )
 284     {
 285         counter_sample_t *p_sample;
 286         p_counter = stats_CounterCreate( p_obj->p_libvlc_global, VLC_VAR_TIME,
 287                                          STATS_TIMER );
 288         if( !p_counter )
 289         {
 290             vlc_mutex_unlock( &p_obj->p_libvlc->timer_lock );
 291             return;
 292         }
 293         p_counter->psz_name = strdup( psz_name );
 294         p_counter->i_id = i_id;
 295         INSERT_ELEM( p_obj->p_libvlc->pp_timers, p_obj->p_libvlc->i_timers,
 296                      p_obj->p_libvlc->i_timers, p_counter );
 297
 298         /* 1st sample : if started: start_date, else last_time, b_started */
 299         p_sample = (counter_sample_t *)malloc( sizeof( counter_sample_t ) );
 300         INSERT_ELEM( p_counter->pp_samples, p_counter->i_samples,
 301                      p_counter->i_samples, p_sample );
 302         p_sample->date = 0; p_sample->value.b_bool = 0;
 303         /* 2nd sample : global_time, i_samples */
 304         p_sample = (counter_sample_t *)malloc( sizeof( counter_sample_t ) );
 305         INSERT_ELEM( p_counter->pp_samples, p_counter->i_samples,
 306                      p_counter->i_samples, p_sample );
 307         p_sample->date = 0; p_sample->value.i_int = 0;
 308     }
 309     if( p_counter->pp_samples[0]->value.b_bool == VLC_TRUE )
 310     {
 311         msg_Warn( p_obj, "timer %s was already started !", psz_name );
 312         vlc_mutex_unlock( &p_obj->p_libvlc->timer_lock );
 313         return;
 314     }
 315     p_counter->pp_samples[0]->value.b_bool = VLC_TRUE;
 316     p_counter->pp_samples[0]->date = mdate();
 317     vlc_mutex_unlock( &p_obj->p_libvlc->timer_lock );
 318 }
 319
 320 void __stats_TimerStop( vlc_object_t *p_obj, unsigned int i_id )
 321 {
 322     counter_t *p_counter = NULL;
 323     int i;
 324     if( !p_obj->p_libvlc->b_stats ) return;
 325     vlc_mutex_lock( &p_obj->p_libvlc->timer_lock );
 326     for( i = 0 ; i < p_obj->p_libvlc->i_timers; i++ )
 327     {
 328         if( p_obj->p_libvlc->pp_timers[i]->i_id == i_id )
 329         {
 330             p_counter = p_obj->p_libvlc->pp_timers[i];
 331             break;
 332         }
 333     }
 334     if( !p_counter || p_counter->i_samples != 2 )
 335     {
 336         msg_Err( p_obj, "timer does not exist" );
 337         vlc_mutex_unlock( &p_obj->p_libvlc->timer_lock );
 338         return;
 339     }
 340     p_counter->pp_samples[0]->value.b_bool = VLC_FALSE;
 341     p_counter->pp_samples[1]->value.i_int += 1;
 342     p_counter->pp_samples[0]->date = mdate() - p_counter->pp_samples[0]->date;
 343     p_counter->pp_samples[1]->date += p_counter->pp_samples[0]->date;
 344     vlc_mutex_unlock( &p_obj->p_libvlc->timer_lock );
 345 }
 346
 347 void __stats_TimerDump( vlc_object_t *p_obj, unsigned int i_id )
 348 {
 349     counter_t *p_counter = NULL;
 350     int i;
 351     if( !p_obj->p_libvlc->b_stats ) return;
 352     vlc_mutex_lock( &p_obj->p_libvlc->timer_lock );
 353     for( i = 0 ; i < p_obj->p_libvlc->i_timers; i++ )
 354     {
 355         if( p_obj->p_libvlc->pp_timers[i]->i_id == i_id )
 356         {
 357             p_counter = p_obj->p_libvlc->pp_timers[i];
 358             break;
 359         }
 360     }
 361     TimerDump( p_obj, p_counter, VLC_TRUE );
 362     vlc_mutex_unlock( &p_obj->p_libvlc->timer_lock );
 363 }
 364
 365 void __stats_TimersDumpAll( vlc_object_t *p_obj )
 366 {
 367     int i;
 368     if( !p_obj->p_libvlc->b_stats ) return;
 369     vlc_mutex_lock( &p_obj->p_libvlc->timer_lock );
 370     for ( i = 0 ; i< p_obj->p_libvlc->i_timers ; i++ )
 371         TimerDump( p_obj, p_obj->p_libvlc->pp_timers[i], VLC_FALSE );
 372     vlc_mutex_unlock( &p_obj->p_libvlc->timer_lock );
 373 }
 374
 375 void __stats_TimersClean( vlc_object_t *p_obj )
 376 {
 377     int i;
 378     vlc_mutex_lock( &p_obj->p_libvlc->timer_lock );
 379     for ( i = p_obj->p_libvlc->i_timers -1 ; i >= 0; i-- )
 380     {
 381         counter_t *p_counter = p_obj->p_libvlc->pp_timers[i];
 382         REMOVE_ELEM( p_obj->p_libvlc->pp_timers, p_obj->p_libvlc->i_timers, i );
 383         stats_CounterClean( p_counter );
 384     }
 385     vlc_mutex_unlock( &p_obj->p_libvlc->timer_lock );
 386 }
 387
 388 void stats_CounterClean( counter_t *p_c )
 389 {
 390     int i;
 391     if( p_c )
 392     {
 393         i = p_c->i_samples - 1 ;
 394         while( i >= 0 )
 395         {
 396             counter_sample_t *p_s = p_c->pp_samples[i];
 397             REMOVE_ELEM( p_c->pp_samples, p_c->i_samples, i );
 398             free( p_s );
 399             i--;
 400         }
 401         if( p_c->psz_name ) free( p_c->psz_name );
 402         free( p_c );
 403     }
 404 }
 405
 406
 407 /********************************************************************
 408  * Following functions are local
 409  ********************************************************************/
 410
 411 /**
 412  * Update a statistics counter, according to its type
 413  * If needed, perform a bit of computation (derivative, mostly)
 414  * This function must be entered with stats handler lock
 415  * \param p_counter the counter to update
 416  * \param val the "new" value
 417  * \return an error code
 418  */
 419 static int CounterUpdate( vlc_object_t *p_handler,
 420                           counter_t *p_counter,
 421                           vlc_value_t val, vlc_value_t *new_val )
 422 {
 423     switch( p_counter->i_compute_type )
 424     {
 425     case STATS_LAST:
 426     case STATS_MIN:
 427     case STATS_MAX:
 428         if( p_counter->i_samples > 1)
 429         {
 430             msg_Err( p_handler, "LAST counter has several samples !" );
 431             return VLC_EGENERIC;
 432         }
 433         if( p_counter->i_type != VLC_VAR_FLOAT &&
 434             p_counter->i_type != VLC_VAR_INTEGER &&
 435             p_counter->i_compute_type != STATS_LAST )
 436         {
 437             msg_Err( p_handler, "unable to compute MIN or MAX for this type");
 438             return VLC_EGENERIC;
 439         }
 440
 441         if( p_counter->i_samples == 0 )
 442         {
 443             counter_sample_t *p_new = (counter_sample_t*)malloc(
 444                                                sizeof( counter_sample_t ) );
 445             p_new->value.psz_string = NULL;
 446
 447             INSERT_ELEM( p_counter->pp_samples, p_counter->i_samples,
 448                          p_counter->i_samples, p_new );
 449         }
 450         if( p_counter->i_samples == 1 )
 451         {
 452             /* Update if : LAST or (MAX and bigger) or (MIN and bigger) */
 453             if( p_counter->i_compute_type == STATS_LAST ||
 454                 ( p_counter->i_compute_type == STATS_MAX &&
 455                    ( ( p_counter->i_type == VLC_VAR_INTEGER &&
 456                        p_counter->pp_samples[0]->value.i_int > val.i_int ) ||
 457                      ( p_counter->i_type == VLC_VAR_FLOAT &&
 458                        p_counter->pp_samples[0]->value.f_float > val.f_float )
 459                    ) ) ||
 460                 ( p_counter->i_compute_type == STATS_MIN &&
 461                    ( ( p_counter->i_type == VLC_VAR_INTEGER &&
 462                        p_counter->pp_samples[0]->value.i_int < val.i_int ) ||
 463                      ( p_counter->i_type == VLC_VAR_FLOAT &&
 464                        p_counter->pp_samples[0]->value.f_float < val.f_float )
 465                    ) ) )
 466             {
 467                 if( p_counter->i_type == VLC_VAR_STRING &&
 468                     p_counter->pp_samples[0]->value.psz_string )
 469                 {
 470                     free( p_counter->pp_samples[0]->value.psz_string );
 471                 }
 472                 p_counter->pp_samples[0]->value = val;
 473                 *new_val = p_counter->pp_samples[0]->value;
 474             }
 475         }
 476         break;
 477     case STATS_DERIVATIVE:
 478     {
 479         counter_sample_t *p_new, *p_old;
 480         if( mdate() - p_counter->last_update < p_counter->update_interval )
 481         {
 482             return VLC_EGENERIC;
 483         }
 484         p_counter->last_update = mdate();
 485         if( p_counter->i_type != VLC_VAR_FLOAT &&
 486             p_counter->i_type != VLC_VAR_INTEGER )
 487         {
 488             msg_Err( p_handler, "Unable to compute DERIVATIVE for this type");
 489             return VLC_EGENERIC;
 490         }
 491         /* Insert the new one at the beginning */
 492         p_new = (counter_sample_t*)malloc( sizeof( counter_sample_t ) );
 493         p_new->value = val;
 494         p_new->date = p_counter->last_update;
 495         INSERT_ELEM( p_counter->pp_samples, p_counter->i_samples,
 496                      0, p_new );
 497
 498         if( p_counter->i_samples == 3 )
 499         {
 500             p_old = p_counter->pp_samples[2];
 501             REMOVE_ELEM( p_counter->pp_samples, p_counter->i_samples, 2 );
 502             free( p_old );
 503         }
 504         break;
 505     }
 506     case STATS_COUNTER:
 507         if( p_counter->i_samples > 1)
 508         {
 509             msg_Err( p_handler, "LAST counter has several samples !" );
 510             return VLC_EGENERIC;
 511         }
 512         if( p_counter->i_samples == 0 )
 513         {
 514             counter_sample_t *p_new = (counter_sample_t*)malloc(
 515                                                sizeof( counter_sample_t ) );
 516             p_new->value.psz_string = NULL;
 517
 518             INSERT_ELEM( p_counter->pp_samples, p_counter->i_samples,
 519                          p_counter->i_samples, p_new );
 520         }
 521         if( p_counter->i_samples == 1 )
 522         {
 523             switch( p_counter->i_type )
 524             {
 525             case VLC_VAR_INTEGER:
 526                 p_counter->pp_samples[0]->value.i_int += val.i_int;
 527                 if( new_val )
 528                     new_val->i_int = p_counter->pp_samples[0]->value.i_int;
 529                 break;
 530             case VLC_VAR_FLOAT:
 531                 p_counter->pp_samples[0]->value.f_float += val.f_float;
 532                 if( new_val )
 533                     new_val->f_float = p_counter->pp_samples[0]->value.f_float;
 534             default:
 535                 msg_Err( p_handler, "Trying to increment invalid variable %s",
 536                          p_counter->psz_name );
 537                 return VLC_EGENERIC;
 538             }
 539         }
 540         break;
 541     }
 542     return VLC_SUCCESS;
 543 }
 544
 545 static void TimerDump( vlc_object_t *p_obj, counter_t *p_counter,
 546                        vlc_bool_t b_total )
 547 {
 548     mtime_t last, total;
 549     int i_total;
 550     if( !p_counter || p_counter->i_samples != 2 )
 551     {
 552         msg_Err( p_obj, "timer %s does not exist", p_counter->psz_name );
 553         return;
 554     }
 555     i_total = p_counter->pp_samples[1]->value.i_int;
 556     total = p_counter->pp_samples[1]->date;
 557     if( p_counter->pp_samples[0]->value.b_bool == VLC_TRUE )
 558     {
 559         last = mdate() - p_counter->pp_samples[0]->date;
 560         i_total += 1;
 561         total += last;
 562     }
 563     else
 564     {
 565         last = p_counter->pp_samples[0]->date;
 566     }
 567     if( b_total )
 568     {
 569         msg_Dbg( p_obj,
 570              "TIMER %s : %.3f ms - Total %.3f ms / %i intvls (Avg %.3f ms)",
 571              p_counter->psz_name, (float)last/1000, (float)total/1000, i_total,
 572              (float)(total)/(1000*(float)i_total ) );
 573     }
 574     else
 575     {
 576         msg_Dbg( p_obj,
 577              "TIMER %s : Total %.3f ms / %i intvls (Avg %.3f ms)",
 578              p_counter->psz_name, (float)total/1000, i_total,
 579              (float)(total)/(1000*(float)i_total ) );
 580     }
 581 }