| 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 | #ifdef HAVE_CONFIG_H |
| 20 | #include <config.h> |
| 21 | #endif |
| 22 | |
| 23 | #include <stdio.h> |
| 24 | #include <string.h> |
| 25 | #include <stdlib.h> |
| 26 | #include <glib.h> |
| 27 | |
| 28 | #include <asm/types.h> |
| 29 | #include <byteswap.h> |
| 30 | |
| 31 | #include "parser.h" |
| 32 | #include <ltt/ltt.h> |
| 33 | #include "ltt-private.h" |
| 34 | #include <ltt/event.h> |
| 35 | #include <ltt/trace.h> |
| 36 | #include <ltt/ltt-types.h> |
| 37 | |
| 38 | LttEvent *ltt_event_new() |
| 39 | { |
| 40 | return g_new(LttEvent, 1); |
| 41 | } |
| 42 | |
| 43 | void ltt_event_destroy(LttEvent *event) |
| 44 | { |
| 45 | g_free(event); |
| 46 | } |
| 47 | |
| 48 | |
| 49 | #if 0 |
| 50 | /* Use get_field_type_size instead */ |
| 51 | /***************************************************************************** |
| 52 | *Function name |
| 53 | * ltt_event_refresh_fields : refresh fields of an event |
| 54 | *Input params |
| 55 | * offsetRoot : offset from the root |
| 56 | * offsetParent : offset from the parent |
| 57 | * fld : field |
| 58 | * evD : event data |
| 59 | * reverse_byte_order : 1 or 0 |
| 60 | *Return value |
| 61 | * int : size of the field |
| 62 | ****************************************************************************/ |
| 63 | |
| 64 | int ltt_event_refresh_fields(int offsetRoot,int offsetParent, |
| 65 | LttField * fld, void *evD, gboolean reverse_byte_order) |
| 66 | { |
| 67 | int size, size1, element_number, i, offset1, offset2; |
| 68 | LttType * type = fld->field_type; |
| 69 | |
| 70 | switch(type->type_class) { |
| 71 | case LTT_ARRAY: |
| 72 | element_number = (int) type->element_number; |
| 73 | if(fld->field_fixed == 0){// has string or sequence |
| 74 | size = 0; |
| 75 | for(i=0;i<element_number;i++){ |
| 76 | size += ltt_event_refresh_fields(offsetRoot+size,size, |
| 77 | fld->child[0], evD+size, reverse_byte_order); |
| 78 | } |
| 79 | }else size = fld->field_size; |
| 80 | break; |
| 81 | |
| 82 | case LTT_SEQUENCE: |
| 83 | size1 = fld->sequ_number_size; |
| 84 | element_number = getIntNumber(reverse_byte_order,size1,evD); |
| 85 | type->element_number = element_number; |
| 86 | if(fld->element_size > 0){ |
| 87 | size = element_number * fld->element_size; |
| 88 | }else{//sequence has string or sequence |
| 89 | size = 0; |
| 90 | for(i=0;i<element_number;i++){ |
| 91 | size += ltt_event_refresh_fields(offsetRoot+size+size1,size+size1, |
| 92 | fld->child[0], evD+size+size1, reverse_byte_order); |
| 93 | } |
| 94 | size += size1; |
| 95 | } |
| 96 | break; |
| 97 | |
| 98 | case LTT_STRING: |
| 99 | size = strlen((gchar*)evD) + 1; //include end : '\0' |
| 100 | break; |
| 101 | |
| 102 | case LTT_STRUCT: |
| 103 | element_number = (int) type->element_number; |
| 104 | if(fld->field_fixed == 0){ |
| 105 | offset1 = offsetRoot; |
| 106 | offset2 = 0; |
| 107 | for(i=0;i<element_number;i++){ |
| 108 | size=ltt_event_refresh_fields(offset1,offset2, |
| 109 | fld->child[i],evD+offset2, reverse_byte_order); |
| 110 | offset1 += size; |
| 111 | offset2 += size; |
| 112 | } |
| 113 | size = offset2; |
| 114 | }else size = fld->field_size; |
| 115 | break; |
| 116 | |
| 117 | case LTT_UNION: |
| 118 | size = fld->field_size; |
| 119 | break; |
| 120 | |
| 121 | default: |
| 122 | size = fld->field_size; |
| 123 | } |
| 124 | |
| 125 | #if 0 |
| 126 | if(type->type_class != LTT_STRUCT && type->type_class != LTT_ARRAY && |
| 127 | type->type_class != LTT_SEQUENCE && type->type_class != LTT_STRING){ |
| 128 | size = fld->field_size; |
| 129 | }else if(type->type_class == LTT_ARRAY){ |
| 130 | element_number = (int) type->element_number; |
| 131 | if(fld->field_fixed == 0){// has string or sequence |
| 132 | size = 0; |
| 133 | for(i=0;i<element_number;i++){ |
| 134 | size += ltt_event_refresh_fields(offsetRoot+size,size, |
| 135 | fld->child[0], evD+size); |
| 136 | } |
| 137 | }else size = fld->field_size; |
| 138 | }else if(type->type_class == LTT_SEQUENCE){ |
| 139 | size1 = fld->sequ_number_size; |
| 140 | element_number = getIntNumber(size1,evD); |
| 141 | type->element_number = element_number; |
| 142 | if(fld->element_size > 0){ |
| 143 | size = element_number * fld->element_size; |
| 144 | }else{//sequence has string or sequence |
| 145 | size = 0; |
| 146 | for(i=0;i<element_number;i++){ |
| 147 | size += ltt_event_refresh_fields(offsetRoot+size+size1,size+size1, |
| 148 | fld->child[0], evD+size+size1); |
| 149 | } |
| 150 | size += size1; |
| 151 | } |
| 152 | }else if(type->type_class == LTT_STRING){ |
| 153 | size = strlen((char*)evD) + 1; //include end : '\0' |
| 154 | }else if(type->type_class == LTT_STRUCT){ |
| 155 | element_number = (int) type->element_number; |
| 156 | if(fld->field_fixed == 0){ |
| 157 | offset1 = offsetRoot; |
| 158 | offset2 = 0; |
| 159 | for(i=0;i<element_number;i++){ |
| 160 | size=ltt_event_refresh_fields(offset1,offset2, |
| 161 | fld->child[i],evD+offset2); |
| 162 | offset1 += size; |
| 163 | offset2 += size; |
| 164 | } |
| 165 | size = offset2; |
| 166 | }else size = fld->field_size; |
| 167 | } |
| 168 | #endif //0 |
| 169 | fld->offset_root = offsetRoot; |
| 170 | fld->offset_parent = offsetParent; |
| 171 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 172 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 173 | fld->field_size = size; |
| 174 | |
| 175 | return size; |
| 176 | } |
| 177 | #endif //0 |
| 178 | |
| 179 | |
| 180 | /***************************************************************************** |
| 181 | *Function name |
| 182 | * ltt_event_eventtype_id: get event type id |
| 183 | * (base id + position of the event) |
| 184 | *Input params |
| 185 | * e : an instance of an event type |
| 186 | *Return value |
| 187 | * unsigned : event type id |
| 188 | ****************************************************************************/ |
| 189 | |
| 190 | unsigned ltt_event_eventtype_id(const LttEvent *e) |
| 191 | { |
| 192 | return (unsigned) e->event_id; |
| 193 | } |
| 194 | |
| 195 | /***************************************************************************** |
| 196 | *Function name |
| 197 | * ltt_event_facility : get the facility of the event |
| 198 | *Input params |
| 199 | * e : an instance of an event type |
| 200 | *Return value |
| 201 | * LttFacility * : the facility of the event |
| 202 | ****************************************************************************/ |
| 203 | |
| 204 | LttFacility *ltt_event_facility(const LttEvent *e) |
| 205 | { |
| 206 | LttTrace * trace = e->tracefile->trace; |
| 207 | unsigned id = e->facility_id; |
| 208 | LttFacility *facility = ltt_trace_facility_by_id(trace,id); |
| 209 | |
| 210 | g_assert(facility->exists); |
| 211 | |
| 212 | return facility; |
| 213 | } |
| 214 | |
| 215 | /***************************************************************************** |
| 216 | *Function name |
| 217 | * ltt_event_facility_id : get the facility id of the event |
| 218 | *Input params |
| 219 | * e : an instance of an event type |
| 220 | *Return value |
| 221 | * unsigned : the facility of the event |
| 222 | ****************************************************************************/ |
| 223 | |
| 224 | unsigned ltt_event_facility_id(const LttEvent *e) |
| 225 | { |
| 226 | return e->facility_id; |
| 227 | } |
| 228 | |
| 229 | /***************************************************************************** |
| 230 | *Function name |
| 231 | * ltt_event_eventtype : get the event type of the event |
| 232 | *Input params |
| 233 | * e : an instance of an event type |
| 234 | *Return value |
| 235 | * LttEventType * : the event type of the event |
| 236 | ****************************************************************************/ |
| 237 | |
| 238 | LttEventType *ltt_event_eventtype(const LttEvent *e) |
| 239 | { |
| 240 | LttFacility* facility = ltt_event_facility(e); |
| 241 | if(!facility) return NULL; |
| 242 | return &g_array_index(facility->events, LttEventType, e->event_id); |
| 243 | } |
| 244 | |
| 245 | /***************************************************************************** |
| 246 | *Function name |
| 247 | * ltt_event_field : get the root field of the event |
| 248 | *Input params |
| 249 | * e : an instance of an event type |
| 250 | * name : field name |
| 251 | *Return value |
| 252 | * LttField * : The requested field, or NULL |
| 253 | ****************************************************************************/ |
| 254 | |
| 255 | LttField *ltt_event_field(LttEvent *e, GQuark name) |
| 256 | { |
| 257 | LttField * field; |
| 258 | LttEventType * event_type = ltt_event_eventtype(e); |
| 259 | if(unlikely(!event_type)) return NULL; |
| 260 | |
| 261 | return (LttField*)g_datalist_id_get_data(&event_type->fields_by_name, name); |
| 262 | |
| 263 | } |
| 264 | |
| 265 | /***************************************************************************** |
| 266 | *Function name |
| 267 | * ltt_event_time : get the time of the event |
| 268 | *Input params |
| 269 | * e : an instance of an event type |
| 270 | *Return value |
| 271 | * LttTime : the time of the event |
| 272 | ****************************************************************************/ |
| 273 | |
| 274 | LttTime ltt_event_time(const LttEvent *e) |
| 275 | { |
| 276 | return e->event_time; |
| 277 | } |
| 278 | |
| 279 | /***************************************************************************** |
| 280 | *Function name |
| 281 | * ltt_event_time : get the cycle count of the event |
| 282 | *Input params |
| 283 | * e : an instance of an event type |
| 284 | *Return value |
| 285 | * LttCycleCount : the cycle count of the event |
| 286 | ****************************************************************************/ |
| 287 | |
| 288 | LttCycleCount ltt_event_cycle_count(const LttEvent *e) |
| 289 | { |
| 290 | return e->tsc; |
| 291 | } |
| 292 | |
| 293 | |
| 294 | |
| 295 | /***************************************************************************** |
| 296 | *Function name |
| 297 | * ltt_event_position_get : get the event position data |
| 298 | *Input params |
| 299 | * e : an instance of an event type |
| 300 | * ep : a pointer to event's position structure |
| 301 | * tf : tracefile pointer |
| 302 | * block : current block |
| 303 | * offset : current offset |
| 304 | * tsc : current tsc |
| 305 | ****************************************************************************/ |
| 306 | void ltt_event_position_get(LttEventPosition *ep, LttTracefile **tf, |
| 307 | guint *block, guint *offset, guint64 *tsc) |
| 308 | { |
| 309 | *tf = ep->tracefile; |
| 310 | *block = ep->block; |
| 311 | *offset = ep->offset; |
| 312 | *tsc = ep->tsc; |
| 313 | } |
| 314 | |
| 315 | |
| 316 | /***************************************************************************** |
| 317 | *Function name |
| 318 | * ltt_event_position : get the event's position |
| 319 | *Input params |
| 320 | * e : an instance of an event type |
| 321 | * ep : a pointer to event's position structure |
| 322 | ****************************************************************************/ |
| 323 | |
| 324 | void ltt_event_position(LttEvent *e, LttEventPosition *ep) |
| 325 | { |
| 326 | ep->tracefile = e->tracefile; |
| 327 | ep->block = e->block; |
| 328 | ep->offset = e->offset; |
| 329 | ep->tsc = e->tsc; |
| 330 | } |
| 331 | |
| 332 | LttEventPosition * ltt_event_position_new() |
| 333 | { |
| 334 | return g_new(LttEventPosition, 1); |
| 335 | } |
| 336 | |
| 337 | |
| 338 | /***************************************************************************** |
| 339 | * Function name |
| 340 | * ltt_event_position_compare : compare two positions |
| 341 | * A NULL value is infinite. |
| 342 | * Input params |
| 343 | * ep1 : a pointer to event's position structure |
| 344 | * ep2 : a pointer to event's position structure |
| 345 | * Return |
| 346 | * -1 is ep1 < ep2 |
| 347 | * 1 if ep1 > ep2 |
| 348 | * 0 if ep1 == ep2 |
| 349 | ****************************************************************************/ |
| 350 | |
| 351 | |
| 352 | gint ltt_event_position_compare(const LttEventPosition *ep1, |
| 353 | const LttEventPosition *ep2) |
| 354 | { |
| 355 | if(ep1 == NULL && ep2 == NULL) |
| 356 | return 0; |
| 357 | if(ep1 != NULL && ep2 == NULL) |
| 358 | return -1; |
| 359 | if(ep1 == NULL && ep2 != NULL) |
| 360 | return 1; |
| 361 | |
| 362 | if(ep1->tracefile != ep2->tracefile) |
| 363 | g_error("ltt_event_position_compare on different tracefiles makes no sense"); |
| 364 | |
| 365 | if(ep1->block < ep2->block) |
| 366 | return -1; |
| 367 | if(ep1->block > ep2->block) |
| 368 | return 1; |
| 369 | if(ep1->offset < ep2->offset) |
| 370 | return -1; |
| 371 | if(ep1->offset > ep2->offset) |
| 372 | return 1; |
| 373 | return 0; |
| 374 | } |
| 375 | |
| 376 | /***************************************************************************** |
| 377 | * Function name |
| 378 | * ltt_event_position_copy : copy position |
| 379 | * Input params |
| 380 | * src : a pointer to event's position structure source |
| 381 | * dest : a pointer to event's position structure dest |
| 382 | * Return |
| 383 | * void |
| 384 | ****************************************************************************/ |
| 385 | void ltt_event_position_copy(LttEventPosition *dest, |
| 386 | const LttEventPosition *src) |
| 387 | { |
| 388 | if(src == NULL) |
| 389 | dest = NULL; |
| 390 | else |
| 391 | *dest = *src; |
| 392 | } |
| 393 | |
| 394 | |
| 395 | |
| 396 | LttTracefile *ltt_event_position_tracefile(LttEventPosition *ep) |
| 397 | { |
| 398 | return ep->tracefile; |
| 399 | } |
| 400 | |
| 401 | /***************************************************************************** |
| 402 | *Function name |
| 403 | * ltt_event_cpu_i: get the cpu id where the event happens |
| 404 | *Input params |
| 405 | * e : an instance of an event type |
| 406 | *Return value |
| 407 | * unsigned : the cpu id |
| 408 | ****************************************************************************/ |
| 409 | |
| 410 | unsigned ltt_event_cpu_id(LttEvent *e) |
| 411 | { |
| 412 | return e->tracefile->cpu_num; |
| 413 | } |
| 414 | |
| 415 | /***************************************************************************** |
| 416 | *Function name |
| 417 | * ltt_event_data : get the raw data for the event |
| 418 | *Input params |
| 419 | * e : an instance of an event type |
| 420 | *Return value |
| 421 | * void * : pointer to the raw data for the event |
| 422 | ****************************************************************************/ |
| 423 | |
| 424 | void *ltt_event_data(LttEvent *e) |
| 425 | { |
| 426 | return e->data; |
| 427 | } |
| 428 | |
| 429 | /***************************************************************************** |
| 430 | *Function name |
| 431 | * ltt_event_field_element_number |
| 432 | * : The number of elements in a sequence field is specific |
| 433 | * to each event. This function returns the number of |
| 434 | * elements for an array or sequence field in an event. |
| 435 | *Input params |
| 436 | * e : an instance of an event type |
| 437 | * f : a field of the instance |
| 438 | *Return value |
| 439 | * unsigned : the number of elements for an array/sequence field |
| 440 | ****************************************************************************/ |
| 441 | guint64 ltt_event_field_element_number(LttEvent *e, LttField *f) |
| 442 | { |
| 443 | if(f->field_type->type_class != LTT_ARRAY && |
| 444 | f->field_type->type_class != LTT_SEQUENCE) |
| 445 | return 0; |
| 446 | |
| 447 | if(f->field_type->type_class == LTT_ARRAY) |
| 448 | return f->field_type->size; |
| 449 | return ltt_get_long_unsigned(e, &g_array_index(f->fields, LttField, 0)); |
| 450 | } |
| 451 | |
| 452 | /***************************************************************************** |
| 453 | *Function name |
| 454 | * ltt_event_field_element_select |
| 455 | * : Set the currently selected element for a sequence or |
| 456 | * array field |
| 457 | * O(1) because of offset array. |
| 458 | *Input params |
| 459 | * e : an instance of an event type |
| 460 | * f : a field of the instance |
| 461 | * i : the ith element (0, ...) |
| 462 | *returns : the child field, at the right index, updated. |
| 463 | ****************************************************************************/ |
| 464 | LttField *ltt_event_field_element_select(LttEvent *e, LttField *f, gulong i) |
| 465 | { |
| 466 | gulong element_number; |
| 467 | LttField *field; |
| 468 | unsigned int k; |
| 469 | size_t size; |
| 470 | LttEventType *event_type; |
| 471 | off_t new_offset; |
| 472 | |
| 473 | if(f->field_type->type_class != LTT_ARRAY && |
| 474 | f->field_type->type_class != LTT_SEQUENCE) |
| 475 | return ; |
| 476 | |
| 477 | element_number = ltt_event_field_element_number(e,f); |
| 478 | event_type = ltt_event_eventtype(e); |
| 479 | /* Sanity check for i : 0..n-1 only, and must be lower or equal element_number |
| 480 | */ |
| 481 | if(i >= element_number) return; |
| 482 | |
| 483 | if(f->field_type->type_class == LTT_ARRAY) { |
| 484 | field = &g_array_index(f->fields, LttField, 0); |
| 485 | } else { |
| 486 | field = &g_array_index(f->fields, LttField, 1); |
| 487 | } |
| 488 | |
| 489 | if(field->field_size != 0) { |
| 490 | if(f->array_offset + (i * field->field_size) == field->offset_root) |
| 491 | return; /* fixed length child, already at the right offset */ |
| 492 | else |
| 493 | new_offset = f->array_offset + (i * field->field_size); |
| 494 | } else { |
| 495 | /* Var. len. child */ |
| 496 | new_offset = g_array_index(f->dynamic_offsets, off_t, i); |
| 497 | } |
| 498 | compute_fields_offsets(e->tracefile, field, new_offset); |
| 499 | |
| 500 | return field; |
| 501 | } |
| 502 | |
| 503 | /***************************************************************************** |
| 504 | * These functions extract data from an event after architecture specific |
| 505 | * conversions |
| 506 | ****************************************************************************/ |
| 507 | guint32 ltt_event_get_unsigned(LttEvent *e, LttField *f) |
| 508 | { |
| 509 | gboolean reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 510 | |
| 511 | LttTypeEnum t = f->field_type->type_class; |
| 512 | |
| 513 | g_assert(t == LTT_UINT || t == LTT_ENUM); |
| 514 | |
| 515 | if(f->field_size == 1){ |
| 516 | guint8 x = *(guint8 *)(e->data + f->offset_root); |
| 517 | return (guint32) x; |
| 518 | }else if(f->field_size == 2){ |
| 519 | return (guint32)ltt_get_uint16(reverse_byte_order, e->data + f->offset_root); |
| 520 | }else if(f->field_size == 4){ |
| 521 | return (guint32)ltt_get_uint32(reverse_byte_order, e->data + f->offset_root); |
| 522 | } |
| 523 | #if 0 |
| 524 | else if(f->field_size == 8){ |
| 525 | guint64 x = *(guint64 *)(e->data + f->offset_root); |
| 526 | if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN) |
| 527 | return (unsigned int) (revFlag ? GUINT64_FROM_BE(x): x); |
| 528 | else |
| 529 | return (unsigned int) (revFlag ? GUINT64_FROM_LE(x): x); |
| 530 | } |
| 531 | #endif //0 |
| 532 | g_critical("ltt_event_get_unsigned : field size %i unknown", f->field_size); |
| 533 | return 0; |
| 534 | } |
| 535 | |
| 536 | gint32 ltt_event_get_int(LttEvent *e, LttField *f) |
| 537 | { |
| 538 | gboolean reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 539 | |
| 540 | g_assert(f->field_type->type_class == LTT_INT); |
| 541 | |
| 542 | if(f->field_size == 1){ |
| 543 | gint8 x = *(gint8 *)(e->data + f->offset_root); |
| 544 | return (gint32) x; |
| 545 | }else if(f->field_size == 2){ |
| 546 | return (gint32)ltt_get_int16(reverse_byte_order, e->data + f->offset_root); |
| 547 | }else if(f->field_size == 4){ |
| 548 | return (gint32)ltt_get_int32(reverse_byte_order, e->data + f->offset_root); |
| 549 | } |
| 550 | #if 0 |
| 551 | else if(f->field_size == 8){ |
| 552 | gint64 x = *(gint64 *)(e->data + f->offset_root); |
| 553 | if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN) |
| 554 | return (int) (revFlag ? GINT64_FROM_BE(x): x); |
| 555 | else |
| 556 | return (int) (revFlag ? GINT64_FROM_LE(x): x); |
| 557 | } |
| 558 | #endif //0 |
| 559 | g_critical("ltt_event_get_int : field size %i unknown", f->field_size); |
| 560 | return 0; |
| 561 | } |
| 562 | |
| 563 | guint64 ltt_event_get_long_unsigned(LttEvent *e, LttField *f) |
| 564 | { |
| 565 | gboolean reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 566 | |
| 567 | LttTypeEnum t = f->field_type->type_class; |
| 568 | |
| 569 | g_assert(t == LTT_UINT || t == LTT_ENUM |
| 570 | || t == LTT_ULONG || LTT_SIZE_T || LTT_OFF_T || LTT_POINTER); |
| 571 | |
| 572 | if(f->field_size == 1){ |
| 573 | guint8 x = *(guint8 *)(e->data + f->offset_root); |
| 574 | return (guint64) x; |
| 575 | }else if(f->field_size == 2){ |
| 576 | return (guint64)ltt_get_uint16(reverse_byte_order, e->data + f->offset_root); |
| 577 | }else if(f->field_size == 4){ |
| 578 | return (guint64)ltt_get_uint32(reverse_byte_order, e->data + f->offset_root); |
| 579 | }else if(f->field_size == 8){ |
| 580 | return ltt_get_uint64(reverse_byte_order, e->data + f->offset_root); |
| 581 | } |
| 582 | g_critical("ltt_event_get_long_unsigned : field size %i unknown", f->field_size); |
| 583 | return 0; |
| 584 | } |
| 585 | |
| 586 | gint64 ltt_event_get_long_int(LttEvent *e, LttField *f) |
| 587 | { |
| 588 | //int revFlag = e->tracefile->trace->my_arch_endian == |
| 589 | // e->tracefile->trace->system_description->endian ? 0:1; |
| 590 | gboolean reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 591 | |
| 592 | g_assert( f->field_type->type_class == LTT_INT |
| 593 | || f->field_type->type_class == LTT_LONG |
| 594 | || f->field_type->type_class == LTT_SSIZE_T); |
| 595 | |
| 596 | if(f->field_size == 1){ |
| 597 | gint8 x = *(gint8 *)(e->data + f->offset_root); |
| 598 | return (gint64) x; |
| 599 | }else if(f->field_size == 2){ |
| 600 | return (gint64)ltt_get_int16(reverse_byte_order, e->data + f->offset_root); |
| 601 | }else if(f->field_size == 4){ |
| 602 | return (gint64)ltt_get_int32(reverse_byte_order, e->data + f->offset_root); |
| 603 | }else if(f->field_size == 8){ |
| 604 | return ltt_get_int64(reverse_byte_order, e->data + f->offset_root); |
| 605 | } |
| 606 | g_critical("ltt_event_get_long_int : field size %i unknown", f->field_size); |
| 607 | return 0; |
| 608 | } |
| 609 | |
| 610 | float ltt_event_get_float(LttEvent *e, LttField *f) |
| 611 | { |
| 612 | g_assert(LTT_HAS_FLOAT(e->tracefile)); |
| 613 | gboolean reverse_byte_order = LTT_GET_FLOAT_BO(e->tracefile); |
| 614 | |
| 615 | g_assert(f->field_type->type_class == LTT_FLOAT && f->field_size == 4); |
| 616 | |
| 617 | if(reverse_byte_order == 0) return *(float *)(e->data + f->offset_root); |
| 618 | else{ |
| 619 | void *ptr = e->data + f->offset_root; |
| 620 | guint32 value = bswap_32(*(guint32*)ptr); |
| 621 | return *(float*)&value; |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | double ltt_event_get_double(LttEvent *e, LttField *f) |
| 626 | { |
| 627 | g_assert(LTT_HAS_FLOAT(e->tracefile)); |
| 628 | gboolean reverse_byte_order = LTT_GET_FLOAT_BO(e->tracefile); |
| 629 | |
| 630 | g_assert(f->field_type->type_class == LTT_FLOAT && f->field_size == 8); |
| 631 | |
| 632 | if(reverse_byte_order == 0) return *(double *)(e->data + f->offset_root); |
| 633 | else { |
| 634 | void *ptr = e->data + f->offset_root; |
| 635 | guint64 value = bswap_64(*(guint64*)ptr); |
| 636 | return *(double*)&value; |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | /***************************************************************************** |
| 641 | * The string obtained is only valid until the next read from |
| 642 | * the same tracefile. |
| 643 | ****************************************************************************/ |
| 644 | char *ltt_event_get_string(LttEvent *e, LttField *f) |
| 645 | { |
| 646 | g_assert(f->field_type->type_class == LTT_STRING); |
| 647 | |
| 648 | return (gchar*)g_strdup((gchar*)(e->data + f->offset_root)); |
| 649 | } |
| 650 | |
| 651 | |
| 652 | /***************************************************************************** |
| 653 | *Function name |
| 654 | * get_field_type_size : set the fixed and dynamic sizes of the field type |
| 655 | * from the data read. |
| 656 | *Input params |
| 657 | * tf : tracefile |
| 658 | * event_type : event type |
| 659 | * offset_root : offset from the root |
| 660 | * offset_parent : offset from the parent |
| 661 | * field : field |
| 662 | * data : a pointer to the event data. |
| 663 | *Returns the field type size. |
| 664 | ****************************************************************************/ |
| 665 | // TODO |
| 666 | // Change this function so it uses a *to offset value incrementation, just like |
| 667 | // genevent-new instead of returning a size. What is of interest here is the |
| 668 | // offset needed to read each field. |
| 669 | // |
| 670 | // Precomputed ones can be returned directly. Otherwise, the field is flagged |
| 671 | // "VARIABLE OFFSET" and must be computed dynamically. The dynamic processing |
| 672 | // of an offset takes the last known fixed offset, and then dynamically |
| 673 | // calculates all variable field offsets from it. |
| 674 | // |
| 675 | // After a VARIABLE SIZE element, all fields have a variable offset. |
| 676 | // Also, is an array or a sequence has variable length child, we must pass |
| 677 | // through all of them, saving the offsets in the dynamic_offsets array. |
| 678 | |
| 679 | #if 0 |
| 680 | size_t get_field_type_size(LttTracefile *tf, LttEventType *event_type, |
| 681 | off_t offset_root, off_t offset_parent, |
| 682 | LttField *field, void *data) |
| 683 | { |
| 684 | size_t size = 0; |
| 685 | guint i; |
| 686 | LttType *type; |
| 687 | off_t align; |
| 688 | |
| 689 | g_assert(field->fixed_root != FIELD_UNKNOWN); |
| 690 | g_assert(field->fixed_parent != FIELD_UNKNOWN); |
| 691 | g_assert(field->fixed_size != FIELD_UNKNOWN); |
| 692 | |
| 693 | field->offset_root = offset_root; |
| 694 | field->offset_parent = offset_parent; |
| 695 | |
| 696 | type = field->field_type; |
| 697 | |
| 698 | switch(type->type_class) { |
| 699 | case LTT_INT: |
| 700 | case LTT_UINT: |
| 701 | case LTT_FLOAT: |
| 702 | case LTT_ENUM: |
| 703 | case LTT_POINTER: |
| 704 | case LTT_LONG: |
| 705 | case LTT_ULONG: |
| 706 | case LTT_SIZE_T: |
| 707 | case LTT_SSIZE_T: |
| 708 | case LTT_OFF_T: |
| 709 | g_assert(field->fixed_size == FIELD_FIXED); |
| 710 | size = field->field_size; |
| 711 | align = ltt_align(field->offset_root, |
| 712 | size, event_type->facility->has_alignment); |
| 713 | field->offset_root += align; |
| 714 | field->offset_parent += align; |
| 715 | size += align; |
| 716 | break; |
| 717 | case LTT_SEQUENCE: |
| 718 | { |
| 719 | /* FIXME : check the type of sequence identifier */ |
| 720 | gint seqnum = ltt_get_uint(LTT_GET_BO(tf), |
| 721 | field->sequ_number_size, |
| 722 | data + offset_root); |
| 723 | |
| 724 | if(field->child[0]->fixed_size == FIELD_FIXED) { |
| 725 | size = field->sequ_number_size + |
| 726 | (seqnum * get_field_type_size(tf, event_type, |
| 727 | offset_root, offset_parent, |
| 728 | field->child[0], data)); |
| 729 | } else { |
| 730 | size += field->sequ_number_size; |
| 731 | for(i=0;i<seqnum;i++) { |
| 732 | size_t child_size; |
| 733 | child_size = get_field_type_size(tf, event_type, |
| 734 | offset_root, offset_parent, |
| 735 | field->child[0], data); |
| 736 | offset_root += child_size; |
| 737 | offset_parent += child_size; |
| 738 | size += child_size; |
| 739 | } |
| 740 | } |
| 741 | field->field_size = size; |
| 742 | } |
| 743 | break; |
| 744 | case LTT_STRING: |
| 745 | size = strlen((char*)(data+offset_root)) + 1;// length + \0 |
| 746 | field->field_size = size; |
| 747 | break; |
| 748 | case LTT_ARRAY: |
| 749 | if(field->fixed_size == FIELD_FIXED) |
| 750 | size = field->field_size; |
| 751 | else { |
| 752 | for(i=0;i<field->field_type->element_number;i++) { |
| 753 | size_t child_size; |
| 754 | child_size = get_field_type_size(tf, event_type, |
| 755 | offset_root, offset_parent, |
| 756 | field->child[0], data); |
| 757 | offset_root += child_size; |
| 758 | offset_parent += child_size; |
| 759 | size += child_size; |
| 760 | } |
| 761 | field->field_size = size; |
| 762 | } |
| 763 | break; |
| 764 | case LTT_STRUCT: |
| 765 | if(field->fixed_size == FIELD_FIXED) |
| 766 | size = field->field_size; |
| 767 | else { |
| 768 | size_t current_root_offset = offset_root; |
| 769 | size_t current_offset = 0; |
| 770 | size_t child_size = 0; |
| 771 | for(i=0;i<type->element_number;i++) { |
| 772 | child_size = get_field_type_size(tf, |
| 773 | event_type, current_root_offset, current_offset, |
| 774 | field->child[i], data); |
| 775 | current_offset += child_size; |
| 776 | current_root_offset += child_size; |
| 777 | |
| 778 | } |
| 779 | size = current_offset; |
| 780 | field->field_size = size; |
| 781 | } |
| 782 | break; |
| 783 | case LTT_UNION: |
| 784 | if(field->fixed_size == FIELD_FIXED) |
| 785 | size = field->field_size; |
| 786 | else { |
| 787 | size_t current_root_offset = field->offset_root; |
| 788 | size_t current_offset = 0; |
| 789 | for(i=0;i<type->element_number;i++) { |
| 790 | size = get_field_type_size(tf, event_type, |
| 791 | current_root_offset, current_offset, |
| 792 | field->child[i], data); |
| 793 | size = max(size, field->child[i]->field_size); |
| 794 | } |
| 795 | field->field_size = size; |
| 796 | } |
| 797 | break; |
| 798 | } |
| 799 | |
| 800 | return size; |
| 801 | } |
| 802 | #endif //0 |
| 803 | |
| 804 | |
| 805 | |
| 806 | |
| 807 | |
| 808 | /***************************************************************************** |
| 809 | *Function name |
| 810 | * compute_fields_offsets : set the precomputable offset of the fields |
| 811 | *Input params |
| 812 | * tf : tracefile |
| 813 | * field : the field |
| 814 | * offset : pointer to the current offset, must be incremented |
| 815 | ****************************************************************************/ |
| 816 | |
| 817 | |
| 818 | void compute_fields_offsets(LttTracefile *tf, LttField *field, off_t *offset, |
| 819 | void *root) |
| 820 | { |
| 821 | type = &field->field_type; |
| 822 | |
| 823 | switch(type->type_class) { |
| 824 | case LTT_INT_FIXED: |
| 825 | case LTT_UINT_FIXED: |
| 826 | case LTT_POINTER: |
| 827 | case LTT_CHAR: |
| 828 | case LTT_UCHAR: |
| 829 | case LTT_SHORT: |
| 830 | case LTT_USHORT: |
| 831 | case LTT_INT: |
| 832 | case LTT_UINT: |
| 833 | case LTT_LONG: |
| 834 | case LTT_ULONG: |
| 835 | case LTT_SIZE_T: |
| 836 | case LTT_SSIZE_T: |
| 837 | case LTT_OFF_T: |
| 838 | case LTT_FLOAT: |
| 839 | case LTT_ENUM: |
| 840 | if(field->fixed_root == FIELD_VARIABLE) { |
| 841 | /* Align offset on type size */ |
| 842 | *offset += ltt_align(*offset, get_alignment(tf, field), |
| 843 | tf->has_alignment); |
| 844 | /* remember offset */ |
| 845 | field->offset_root = *offset; |
| 846 | /* Increment offset */ |
| 847 | *offset += field->field_size; |
| 848 | } |
| 849 | /* None of these types has variable size, so we are sure that if |
| 850 | * this element has a fixed_root, then the following one will have |
| 851 | * a fixed root too, so it does not need the *offset at all. |
| 852 | */ |
| 853 | break; |
| 854 | case LTT_STRING: |
| 855 | if(field->fixed_root == FIELD_VARIABLE) { |
| 856 | field->offset_root = *offset; |
| 857 | } |
| 858 | *offset += strlen((gchar*)(root+*offset)) + 1; |
| 859 | break; |
| 860 | case LTT_ARRAY: |
| 861 | g_assert(type->fields->len == 1); |
| 862 | { |
| 863 | off_t local_offset; |
| 864 | LttField *child = &g_array_index(type->fields, LttField, 0); |
| 865 | if(field->fixed_root == FIELD_VARIABLE) { |
| 866 | *offset += ltt_align(*offset, get_alignment(tf, field), |
| 867 | tf->has_alignment); |
| 868 | /* remember offset */ |
| 869 | field->offset_root = *offset; |
| 870 | field->array_offset = *offset; |
| 871 | } |
| 872 | |
| 873 | if(field->field_size != 0) { |
| 874 | /* Increment offset */ |
| 875 | /* field_size is the array size in bytes */ |
| 876 | *offset = field->offset_root + field->field_size; |
| 877 | } else { |
| 878 | guint i; |
| 879 | *offset = field->array_offset; |
| 880 | field->dynamic_offsets = g_array_set_size(field->dynamic_offsets, |
| 881 | 0); |
| 882 | for(i=0; i<type->size; i++) { |
| 883 | g_array_append_val(field->dynamic_offsets, *offset); |
| 884 | compute_fields_offsets(tf, child, offset); |
| 885 | } |
| 886 | } |
| 887 | // local_offset = field->array_offset; |
| 888 | // /* Set the offset at position 0 */ |
| 889 | // compute_fields_offsets(tf, child, &local_offset); |
| 890 | break; |
| 891 | case LTT_SEQUENCE: |
| 892 | g_assert(type->fields->len == 2); |
| 893 | { |
| 894 | off_t local_offset; |
| 895 | LttField *child; |
| 896 | guint i; |
| 897 | if(field->fixed_root == FIELD_VARIABLE) { |
| 898 | *offset += ltt_align(*offset, get_alignment(tf, field), |
| 899 | tf->has_alignment); |
| 900 | /* remember offset */ |
| 901 | field->offset_root = *offset; |
| 902 | |
| 903 | child = &g_array_index(type->fields, LttField, 0); |
| 904 | compute_fields_offsets(tf, child, offset); |
| 905 | child = &g_array_index(type->fields, LttField, 1); |
| 906 | *offset += ltt_align(*offset, get_alignment(tf, child), |
| 907 | tf->has_alignment); |
| 908 | field->array_offset = *offset; |
| 909 | |
| 910 | } else { |
| 911 | child = &g_array_index(type->fields, LttField, 1); |
| 912 | } |
| 913 | *offset = field->array_offset; |
| 914 | field->dynamic_offsets = g_array_set_size(field->dynamic_offsets, |
| 915 | 0); |
| 916 | for(i=0; i<ltt_event_field_element_number(&tf->event, field); i++) { |
| 917 | g_array_append_val(field->dynamic_offsets, *offset); |
| 918 | compute_fields_offsets(tf, child, offset); |
| 919 | } |
| 920 | // local_offset = field->array_offset; |
| 921 | // /* Set the offset at position 0 */ |
| 922 | // compute_fields_offsets(tf, child, &local_offset); |
| 923 | } |
| 924 | break; |
| 925 | case LTT_STRUCT: |
| 926 | { |
| 927 | LttField *child; |
| 928 | guint i; |
| 929 | gint ret=0; |
| 930 | if(field->fixed_root == FIELD_VARIABLE) { |
| 931 | *offset += ltt_align(*offset, get_alignment(tf, field), |
| 932 | tf->has_alignment); |
| 933 | /* remember offset */ |
| 934 | field->offset_root = *offset; |
| 935 | } else { |
| 936 | *offset = field->offset_root; |
| 937 | } |
| 938 | for(i=0; i<type->fields->len; i++) { |
| 939 | child = &g_array_index(type->fields, LttField, i); |
| 940 | compute_fields_offsets(tf, child, offset); |
| 941 | } |
| 942 | } |
| 943 | break; |
| 944 | case LTT_UNION: |
| 945 | { |
| 946 | LttField *child; |
| 947 | guint i; |
| 948 | gint ret=0; |
| 949 | if(field->fixed_root == FIELD_VARIABLE) { |
| 950 | *offset += ltt_align(*offset, get_alignment(tf, field), |
| 951 | tf->has_alignment); |
| 952 | /* remember offset */ |
| 953 | field->offset_root = *offset; |
| 954 | } |
| 955 | for(i=0; i<type->fields->len; i++) { |
| 956 | *offset = field->offset_root; |
| 957 | child = &g_array_index(type->fields, LttField, i); |
| 958 | compute_fields_offsets(tf, child, offset); |
| 959 | } |
| 960 | *offset = field->offset_root + field->field_size; |
| 961 | } |
| 962 | break; |
| 963 | case LTT_NONE: |
| 964 | default: |
| 965 | g_error("compute_fields_offsets : unknown type"); |
| 966 | } |
| 967 | |
| 968 | } |
| 969 | |
| 970 | |
| 971 | /***************************************************************************** |
| 972 | *Function name |
| 973 | * compute_offsets : set the dynamically computable offsets of an event type |
| 974 | *Input params |
| 975 | * tf : tracefile |
| 976 | * event : event type |
| 977 | * |
| 978 | ****************************************************************************/ |
| 979 | void compute_offsets(LttTracefile *tf, LttEventType *event, size_t *offset, |
| 980 | void *root) |
| 981 | { |
| 982 | guint i; |
| 983 | gint ret; |
| 984 | |
| 985 | /* compute all variable offsets */ |
| 986 | for(i=0; i<event->fields->len; i++) { |
| 987 | LttField *field = &g_array_index(event->fields, LttField, i); |
| 988 | ret = compute_fields_offsets(tf, field, offset, root); |
| 989 | if(ret) break; |
| 990 | } |
| 991 | |
| 992 | } |
| 993 | |