ltt/branches/poly/ltt/event.c

   1 /* This file is part of the Linux Trace Toolkit viewer
   2  * Copyright (C) 2003-2004 Xiangxiu Yang
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License Version 2 as
   6  * published by the Free Software Foundation;
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software
  15  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  16  * MA 02111-1307, USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <asm/types.h>
  21 #include <linux/byteorder/swab.h>
  22
  23 #include "parser.h"
  24 #include <ltt/ltt.h>
  25 #include "ltt-private.h"
  26 #include <ltt/event.h>
  27 #include <ltt/trace.h>
  28
  29 /*****************************************************************************
  30  *Function name
  31  *    ltt_event_refresh_fields   : refresh fields of an event
  32  *Input params
  33  *    offsetRoot      : offset from the root
  34  *    offsetParent    : offset from the parrent
  35  *    fld             : field
  36  *    evD             : event data
  37  *Return value
  38  *    int             : size of the field
  39  ****************************************************************************/
  40
  41 int ltt_event_refresh_fields(int offsetRoot,int offsetParent,
  42                              LttField * fld, void *evD)
  43 {
  44   int size, size1, element_number, i, offset1, offset2;
  45   LttType * type = fld->field_type;
  46
  47   if(type->type_class != LTT_STRUCT && type->type_class != LTT_ARRAY &&
  48      type->type_class != LTT_SEQUENCE && type->type_class != LTT_STRING){
  49     size = fld->field_size;
  50   }else if(type->type_class == LTT_ARRAY){
  51     element_number = (int) type->element_number;
  52     if(fld->field_fixed == 0){// has string or sequence
  53       size = 0;
  54       for(i=0;i<element_number;i++){
  55         size += ltt_event_refresh_fields(offsetRoot+size,size,
  56                                          fld->child[0], evD+size);
  57       }
  58     }else size = fld->field_size;
  59   }else if(type->type_class == LTT_SEQUENCE){
  60     size1 = fld->sequ_number_size;
  61     element_number = getIntNumber(size1,evD);
  62     type->element_number = element_number;
  63     if(fld->element_size > 0){
  64       size = element_number * fld->element_size;
  65     }else{//sequence has string or sequence
  66       size = 0;
  67       for(i=0;i<element_number;i++){
  68         size += ltt_event_refresh_fields(offsetRoot+size+size1,size+size1,
  69                                          fld->child[0], evD+size+size1);
  70       }
  71       size += size1;
  72     }
  73   }else if(type->type_class == LTT_STRING){
  74     size = strlen((char*)evD) + 1; //include end : '\0'
  75   }else if(type->type_class == LTT_STRUCT){
  76     element_number = (int) type->element_number;
  77     if(fld->field_fixed == 0){
  78       offset1 = offsetRoot;
  79       offset2 = 0;
  80       for(i=0;i<element_number;i++){
  81         size=ltt_event_refresh_fields(offset1,offset2,fld->child[i],evD+offset2);
  82         offset1 += size;
  83         offset2 += size;
  84       }
  85       size = offset2;
  86     }else size = fld->field_size;
  87   }
  88
  89   fld->offset_root     = offsetRoot;
  90   fld->offset_parent   = offsetParent;
  91   fld->fixed_root      = (offsetRoot==-1)   ? 0 : 1;
  92   fld->fixed_parent    = (offsetParent==-1) ? 0 : 1;
  93   fld->field_size      = size;
  94
  95   return size;
  96 }
  97
  98 /*****************************************************************************
  99  *Function name
 100  *    ltt_event_eventtype_id: get event type id
 101  *                            (base id + position of the event)
 102  *Input params
 103  *    e                     : an instance of an event type
 104  *Return value
 105  *    unsigned              : event type id
 106  ****************************************************************************/
 107
 108 unsigned ltt_event_eventtype_id(LttEvent *e)
 109 {
 110   return (unsigned) e->event_id;
 111 }
 112
 113 /*****************************************************************************
 114  *Function name
 115  *    ltt_event_facility : get the facility of the event
 116  *Input params
 117  *    e                  : an instance of an event type
 118  *Return value
 119  *    LttFacility *     : the facility of the event
 120  ****************************************************************************/
 121
 122 LttFacility *ltt_event_facility(LttEvent *e)
 123 {
 124   LttTrace * trace = e->tracefile->trace;
 125   unsigned id = e->event_id;
 126   return ltt_trace_facility_by_id(trace,id);
 127 }
 128
 129 /*****************************************************************************
 130  *Function name
 131  *    ltt_event_eventtype : get the event type of the event
 132  *Input params
 133  *    e                   : an instance of an event type
 134  *Return value
 135  *    LttEventType *     : the event type of the event
 136  ****************************************************************************/
 137
 138 LttEventType *ltt_event_eventtype(LttEvent *e)
 139 {
 140   LttFacility* facility = ltt_event_facility(e);
 141   if(!facility) return NULL;
 142   return facility->events[e->event_id - facility->base_id];
 143 }
 144
 145 /*****************************************************************************
 146  *Function name
 147  *    ltt_event_field : get the root field of the event
 148  *Input params
 149  *    e               : an instance of an event type
 150  *Return value
 151  *    LttField *      : the root field of the event
 152  ****************************************************************************/
 153
 154 LttField *ltt_event_field(LttEvent *e)
 155 {
 156   LttField * field;
 157   LttEventType * event_type = ltt_event_eventtype(e);
 158   if(!event_type) return NULL;
 159   field = event_type->root_field;
 160   if(!field) return NULL;
 161
 162   //check if the field need refresh
 163   if(e->which_block != event_type->latest_block ||
 164      e->which_event != event_type->latest_event){
 165
 166     event_type->latest_block = e->which_block;
 167     event_type->latest_event = e->which_event;
 168
 169     if(field->field_fixed == 1)return field;
 170
 171     //refresh the field
 172     ltt_event_refresh_fields(0, 0, field, e->data);
 173   }
 174   return field;
 175 }
 176
 177 /*****************************************************************************
 178  *Function name
 179  *    ltt_event_time : get the time of the event
 180  *Input params
 181  *    e              : an instance of an event type
 182  *Return value
 183  *    LttTime       : the time of the event
 184  ****************************************************************************/
 185
 186 LttTime ltt_event_time(LttEvent *e)
 187 {
 188   return e->event_time;
 189 }
 190
 191 /*****************************************************************************
 192  *Function name
 193  *    ltt_event_time : get the cycle count of the event
 194  *Input params
 195  *    e              : an instance of an event type
 196  *Return value
 197  *    LttCycleCount  : the cycle count of the event
 198  ****************************************************************************/
 199
 200 LttCycleCount ltt_event_cycle_count(LttEvent *e)
 201 {
 202   return e->event_cycle_count;
 203 }
 204
 205 /*****************************************************************************
 206  *Function name
 207  *    ltt_event_position : get the event's position
 208  *Input params
 209  *    e                  : an instance of an event type
 210  *    ep                 : a pointer to event's position structure
 211  ****************************************************************************/
 212
 213 void ltt_event_position(LttEvent *e, LttEventPosition *ep)
 214 {
 215   ep->block_num         = e->which_block;
 216   ep->event_num         = e->which_event;
 217   ep->event_time        = e->event_time;
 218   ep->event_cycle_count = e->event_cycle_count;
 219   ep->heart_beat_number = e->tracefile->cur_heart_beat_number;
 220   ep->old_position      = FALSE;
 221   ep->event_offset      = e->data - e->tracefile->buffer - EVENT_HEADER_SIZE ;
 222   ep->tf                = e->tracefile;
 223 }
 224
 225 LttEventPosition * ltt_event_position_new()
 226 {
 227   return g_new(LttEventPosition, 1);
 228 }
 229
 230 /*****************************************************************************
 231  *Function name
 232  *    ltt_event_position_get : get the block number and index of the event
 233  *Input params
 234  *    ep                     : a pointer to event's position structure
 235  *    block_number           : the block number of the event
 236  *    index_in_block         : the index of the event within the block
 237  ****************************************************************************/
 238
 239 void ltt_event_position_get(LttEventPosition *ep,
 240     unsigned *block_number, unsigned *index_in_block, LttTracefile ** tf)
 241 {
 242   *block_number   = ep->block_num;
 243   *index_in_block = ep->event_num;
 244   *tf             = ep->tf;
 245 }
 246
 247 /*****************************************************************************
 248  *Function name
 249  *    ltt_event_position_set : set the block number and index of the event
 250  *Input params
 251  *    ep                     : a pointer to event's position structure
 252  *    block_number           : the block number of the event
 253  *    index_in_block         : the index of the event within the block
 254  ****************************************************************************/
 255
 256 void ltt_event_position_set(LttEventPosition *ep,
 257     unsigned block_number, unsigned index_in_block)
 258 {
 259   ep->block_num = block_number;
 260   ep->event_num = index_in_block;
 261 }
 262
 263 /*****************************************************************************
 264  *Function name
 265  *    ltt_event_cpu_i: get the cpu id where the event happens
 266  *Input params
 267  *    e              : an instance of an event type
 268  *Return value
 269  *    unsigned       : the cpu id
 270  ****************************************************************************/
 271
 272 unsigned ltt_event_cpu_id(LttEvent *e)
 273 {
 274   char * c1, * c2, * c3;
 275   c1 = strrchr(e->tracefile->name,'\\');
 276   c2 = strrchr(e->tracefile->name,'/');
 277   if(c1 == NULL && c2 == NULL){
 278     return (unsigned)atoi(e->tracefile->name);
 279   }else if(c1 == NULL){
 280     c2++;
 281     return (unsigned)atoi(c2);
 282   }else if(c2 == NULL){
 283     c1++;
 284     return (unsigned)atoi(c1);
 285   }else{
 286     c3 = (c1 > c2) ? c1 : c2;
 287     c3++;
 288     return (unsigned)atoi(c3);
 289   }
 290 }
 291
 292 /*****************************************************************************
 293  *Function name
 294  *    ltt_event_data : get the raw data for the event
 295  *Input params
 296  *    e              : an instance of an event type
 297  *Return value
 298  *    void *         : pointer to the raw data for the event
 299  ****************************************************************************/
 300
 301 void *ltt_event_data(LttEvent *e)
 302 {
 303   return e->data;
 304 }
 305
 306 /*****************************************************************************
 307  *Function name
 308  *    ltt_event_field_element_number
 309  *                   : The number of elements in a sequence field is specific
 310  *                     to each event. This function returns the number of
 311  *                     elements for an array or sequence field in an event.
 312  *Input params
 313  *    e              : an instance of an event type
 314  *    f              : a field of the instance
 315  *Return value
 316  *    unsigned       : the number of elements for an array/sequence field
 317  ****************************************************************************/
 318
 319 unsigned ltt_event_field_element_number(LttEvent *e, LttField *f)
 320 {
 321   if(f->field_type->type_class != LTT_ARRAY &&
 322      f->field_type->type_class != LTT_SEQUENCE)
 323     return 0;
 324
 325   if(f->field_type->type_class == LTT_ARRAY)
 326     return f->field_type->element_number;
 327   return (unsigned)  getIntNumber(f->sequ_number_size, e + f->offset_root);
 328 }
 329
 330 /*****************************************************************************
 331  *Function name
 332  *    ltt_event_field_element_select
 333  *                   : Set the currently selected element for a sequence or
 334  *                     array field
 335  *Input params
 336  *    e              : an instance of an event type
 337  *    f              : a field of the instance
 338  *    i              : the ith element
 339  ****************************************************************************/
 340
 341 void ltt_event_field_element_select(LttEvent *e, LttField *f, unsigned i)
 342 {
 343   unsigned element_number;
 344   LttField *fld;
 345   int k, size;
 346   void *evD;
 347
 348   if(f->field_type->type_class != LTT_ARRAY &&
 349      f->field_type->type_class != LTT_SEQUENCE)
 350     return ;
 351
 352   element_number  = ltt_event_field_element_number(e,f);
 353   if((element_number-1) < i || i < 0) return;
 354
 355   fld = f->child[0];
 356
 357   evD = e->data + f->offset_root;
 358   size = 0;
 359   for(k=0;k<i;k++){
 360     size += ltt_event_refresh_fields(f->offset_root+size,size, fld, evD+size);
 361   }
 362
 363   f->current_element = i - 1;
 364 }
 365
 366 /*****************************************************************************
 367  * These functions extract data from an event after architecture specific
 368  * conversions
 369  ****************************************************************************/
 370
 371 unsigned ltt_event_get_unsigned(LttEvent *e, LttField *f)
 372 {
 373   int revFlag = e->tracefile->trace->my_arch_endian ==
 374                 e->tracefile->trace->system_description->endian ? 0:1;
 375   LttTypeEnum t = f->field_type->type_class;
 376
 377   if(t != LTT_UINT && t != LTT_ENUM)
 378     g_error("The type of the field is not unsigned int\n");
 379
 380   if(f->field_size == 1){
 381     guint8 x = *(guint8 *)(e->data + f->offset_root);
 382     return (unsigned int) x;
 383   }else if(f->field_size == 2){
 384     guint16 x = *(guint16 *)(e->data + f->offset_root);
 385     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 386       return (unsigned int) (revFlag ? GUINT16_FROM_BE(x): x);
 387     else
 388       return (unsigned int) (revFlag ? GUINT16_FROM_LE(x): x);
 389   }else if(f->field_size == 4){
 390     guint32 x = *(guint32 *)(e->data + f->offset_root);
 391     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 392       return (unsigned int) (revFlag ? GUINT32_FROM_BE(x): x);
 393     else
 394       return (unsigned int) (revFlag ? GUINT32_FROM_LE(x): x);
 395   }else if(f->field_size == 8){
 396     guint64 x = *(guint64 *)(e->data + f->offset_root);
 397     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 398       return (unsigned int) (revFlag ? GUINT64_FROM_BE(x): x);
 399     else
 400       return (unsigned int) (revFlag ? GUINT64_FROM_LE(x): x);
 401   }
 402 }
 403
 404 int ltt_event_get_int(LttEvent *e, LttField *f)
 405 {
 406   int revFlag = e->tracefile->trace->my_arch_endian ==
 407                 e->tracefile->trace->system_description->endian ? 0:1;
 408
 409   if(f->field_type->type_class != LTT_INT)
 410     g_error("The type of the field is not int\n");
 411
 412   if(f->field_size == 1){
 413     gint8 x = *(gint8 *)(e->data + f->offset_root);
 414     return (int) x;
 415   }else if(f->field_size == 2){
 416     gint16 x = *(gint16 *)(e->data + f->offset_root);
 417     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 418       return (int) (revFlag ? GINT16_FROM_BE(x): x);
 419     else
 420       return (int) (revFlag ? GINT16_FROM_LE(x): x);
 421   }else if(f->field_size == 4){
 422     gint32 x = *(gint32 *)(e->data + f->offset_root);
 423     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 424       return (int) (revFlag ? GINT32_FROM_BE(x): x);
 425     else
 426       return (int) (revFlag ? GINT32_FROM_LE(x): x);
 427   }else if(f->field_size == 8){
 428     gint64 x = *(gint64 *)(e->data + f->offset_root);
 429     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 430       return (int) (revFlag ? GINT64_FROM_BE(x): x);
 431     else
 432       return (int) (revFlag ? GINT64_FROM_LE(x): x);
 433   }
 434 }
 435
 436 unsigned long ltt_event_get_long_unsigned(LttEvent *e, LttField *f)
 437 {
 438   int revFlag = e->tracefile->trace->my_arch_endian ==
 439                 e->tracefile->trace->system_description->endian ? 0:1;
 440   LttTypeEnum t = f->field_type->type_class;
 441
 442   if(t != LTT_UINT && t != LTT_ENUM)
 443     g_error("The type of the field is not unsigned long\n");
 444
 445   if(f->field_size == 1){
 446     guint8 x = *(guint8 *)(e->data + f->offset_root);
 447     return (unsigned long) x;
 448   }else if(f->field_size == 2){
 449     guint16 x = *(guint16 *)(e->data + f->offset_root);
 450     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 451       return (unsigned long) (revFlag ? GUINT16_FROM_BE(x): x);
 452     else
 453       return (unsigned long) (revFlag ? GUINT16_FROM_LE(x): x);
 454   }else if(f->field_size == 4){
 455     guint32 x = *(guint32 *)(e->data + f->offset_root);
 456     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 457       return (unsigned long) (revFlag ? GUINT32_FROM_BE(x): x);
 458     else
 459       return (unsigned long) (revFlag ? GUINT32_FROM_LE(x): x);
 460   }else if(f->field_size == 8){
 461     guint64 x = *(guint64 *)(e->data + f->offset_root);
 462     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 463       return (unsigned long) (revFlag ? GUINT64_FROM_BE(x): x);
 464     else
 465       return (unsigned long) (revFlag ? GUINT64_FROM_LE(x): x);
 466   }
 467 }
 468
 469 long int ltt_event_get_long_int(LttEvent *e, LttField *f)
 470 {
 471   int revFlag = e->tracefile->trace->my_arch_endian ==
 472                 e->tracefile->trace->system_description->endian ? 0:1;
 473
 474   if( f->field_type->type_class != LTT_INT)
 475     g_error("The type of the field is not long int\n");
 476
 477   if(f->field_size == 1){
 478     gint8 x = *(gint8 *)(e->data + f->offset_root);
 479     return (long) x;
 480   }else if(f->field_size == 2){
 481     gint16 x = *(gint16 *)(e->data + f->offset_root);
 482     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 483       return (long) (revFlag ? GINT16_FROM_BE(x): x);
 484     else
 485       return (long) (revFlag ? GINT16_FROM_LE(x): x);
 486   }else if(f->field_size == 4){
 487     gint32 x = *(gint32 *)(e->data + f->offset_root);
 488     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 489       return (long) (revFlag ? GINT32_FROM_BE(x): x);
 490     else
 491       return (long) (revFlag ? GINT32_FROM_LE(x): x);
 492   }else if(f->field_size == 8){
 493     gint64 x = *(gint64 *)(e->data + f->offset_root);
 494     if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN)
 495       return (long) (revFlag ? GINT64_FROM_BE(x): x);
 496     else
 497       return (long) (revFlag ? GINT64_FROM_LE(x): x);
 498   }
 499 }
 500
 501 float ltt_event_get_float(LttEvent *e, LttField *f)
 502 {
 503   int revFlag = e->tracefile->trace->my_arch_endian ==
 504                 e->tracefile->trace->system_description->endian ? 0:1;
 505
 506   if(f->field_type->type_class != LTT_FLOAT ||
 507      (f->field_type->type_class == LTT_FLOAT && f->field_size != 4))
 508     g_error("The type of the field is not float\n");
 509
 510   if(revFlag == 0) return *(float *)(e->data + f->offset_root);
 511   else{
 512     guint32 aInt;
 513     memcpy((void*)&aInt, e->data + f->offset_root, 4);
 514     aInt = ___swab32(aInt);
 515     return *((float*)&aInt);
 516   }
 517 }
 518
 519 double ltt_event_get_double(LttEvent *e, LttField *f)
 520 {
 521   int revFlag = e->tracefile->trace->my_arch_endian ==
 522                 e->tracefile->trace->system_description->endian ? 0:1;
 523
 524   if(f->field_type->type_class != LTT_FLOAT ||
 525      (f->field_type->type_class == LTT_FLOAT && f->field_size != 8))
 526     g_error("The type of the field is not double\n");
 527
 528   if(revFlag == 0) return *(double *)(e->data + f->offset_root);
 529   else{
 530     guint64 aInt;
 531     memcpy((void*)&aInt, e->data + f->offset_root, 8);
 532     aInt = ___swab64(aInt);
 533     return *((double *)&aInt);
 534   }
 535 }
 536
 537 /*****************************************************************************
 538  * The string obtained is only valid until the next read from
 539  * the same tracefile.
 540  ****************************************************************************/
 541
 542 char *ltt_event_get_string(LttEvent *e, LttField *f)
 543 {
 544   if(f->field_type->type_class != LTT_STRING)
 545     g_error("The field contains no string\n");
 546   return (char*)g_strdup((char*)(e->data + f->offset_root));
 547 }