| 1 | /* This file is part of the Linux Trace Toolkit viewer |
| 2 | * Copyright (C) 2003-2004 Xiangxiu Yang |
| 3 | * 2006 Mathieu Desnoyers |
| 4 | * |
| 5 | * This library is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU Lesser General Public |
| 7 | * License Version 2.1 as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This library is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * Lesser General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU Lesser General Public |
| 15 | * License along with this library; if not, write to the |
| 16 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 17 | * Boston, MA 02111-1307, USA. |
| 18 | */ |
| 19 | |
| 20 | #ifdef HAVE_CONFIG_H |
| 21 | #include <config.h> |
| 22 | #endif |
| 23 | |
| 24 | #include <stdio.h> |
| 25 | #include <string.h> |
| 26 | #include <stdlib.h> |
| 27 | #include <glib.h> |
| 28 | |
| 29 | #include <asm/types.h> |
| 30 | #include <byteswap.h> |
| 31 | |
| 32 | #include "parser.h" |
| 33 | #include <ltt/ltt.h> |
| 34 | #include "ltt-private.h" |
| 35 | #include <ltt/event.h> |
| 36 | #include <ltt/trace.h> |
| 37 | #include <ltt/ltt-types.h> |
| 38 | |
| 39 | |
| 40 | |
| 41 | void compute_fields_offsets(LttTracefile *tf, |
| 42 | LttFacility *fac, LttField *field, off_t *offset, void *root, guint is_compact); |
| 43 | |
| 44 | |
| 45 | LttEvent *ltt_event_new() |
| 46 | { |
| 47 | return g_new(LttEvent, 1); |
| 48 | } |
| 49 | |
| 50 | void ltt_event_destroy(LttEvent *event) |
| 51 | { |
| 52 | g_free(event); |
| 53 | } |
| 54 | |
| 55 | |
| 56 | /***************************************************************************** |
| 57 | *Function name |
| 58 | * ltt_event_eventtype_id: get event type id |
| 59 | * (base id + position of the event) |
| 60 | *Input params |
| 61 | * e : an instance of an event type |
| 62 | *Return value |
| 63 | * unsigned : event type id |
| 64 | ****************************************************************************/ |
| 65 | |
| 66 | unsigned ltt_event_eventtype_id(const LttEvent *e) |
| 67 | { |
| 68 | return (unsigned) e->event_id; |
| 69 | } |
| 70 | |
| 71 | /***************************************************************************** |
| 72 | *Function name |
| 73 | * ltt_event_facility : get the facility of the event |
| 74 | *Input params |
| 75 | * e : an instance of an event type |
| 76 | *Return value |
| 77 | * LttFacility * : the facility of the event |
| 78 | ****************************************************************************/ |
| 79 | |
| 80 | LttFacility *ltt_event_facility(const LttEvent *e) |
| 81 | { |
| 82 | LttTrace * trace = e->tracefile->trace; |
| 83 | unsigned id = e->facility_id; |
| 84 | LttFacility *facility = ltt_trace_facility_by_id(trace,id); |
| 85 | |
| 86 | g_assert(facility->exists); |
| 87 | |
| 88 | return facility; |
| 89 | } |
| 90 | |
| 91 | /***************************************************************************** |
| 92 | *Function name |
| 93 | * ltt_event_facility_id : get the facility id of the event |
| 94 | *Input params |
| 95 | * e : an instance of an event type |
| 96 | *Return value |
| 97 | * unsigned : the facility of the event |
| 98 | ****************************************************************************/ |
| 99 | |
| 100 | unsigned ltt_event_facility_id(const LttEvent *e) |
| 101 | { |
| 102 | return e->facility_id; |
| 103 | } |
| 104 | |
| 105 | /***************************************************************************** |
| 106 | *Function name |
| 107 | * ltt_event_eventtype : get the event type of the event |
| 108 | *Input params |
| 109 | * e : an instance of an event type |
| 110 | *Return value |
| 111 | * LttEventType * : the event type of the event |
| 112 | ****************************************************************************/ |
| 113 | |
| 114 | LttEventType *ltt_event_eventtype(const LttEvent *e) |
| 115 | { |
| 116 | LttFacility* facility = ltt_event_facility(e); |
| 117 | if(!facility) return NULL; |
| 118 | return &g_array_index(facility->events, LttEventType, e->event_id); |
| 119 | } |
| 120 | |
| 121 | |
| 122 | /***************************************************************************** |
| 123 | *Function name |
| 124 | * ltt_event_time : get the time of the event |
| 125 | *Input params |
| 126 | * e : an instance of an event type |
| 127 | *Return value |
| 128 | * LttTime : the time of the event |
| 129 | ****************************************************************************/ |
| 130 | |
| 131 | LttTime ltt_event_time(const LttEvent *e) |
| 132 | { |
| 133 | return e->event_time; |
| 134 | } |
| 135 | |
| 136 | /***************************************************************************** |
| 137 | *Function name |
| 138 | * ltt_event_time : get the cycle count of the event |
| 139 | *Input params |
| 140 | * e : an instance of an event type |
| 141 | *Return value |
| 142 | * LttCycleCount : the cycle count of the event |
| 143 | ****************************************************************************/ |
| 144 | |
| 145 | LttCycleCount ltt_event_cycle_count(const LttEvent *e) |
| 146 | { |
| 147 | return e->tsc; |
| 148 | } |
| 149 | |
| 150 | |
| 151 | |
| 152 | /***************************************************************************** |
| 153 | *Function name |
| 154 | * ltt_event_position_get : get the event position data |
| 155 | *Input params |
| 156 | * e : an instance of an event type |
| 157 | * ep : a pointer to event's position structure |
| 158 | * tf : tracefile pointer |
| 159 | * block : current block |
| 160 | * offset : current offset |
| 161 | * tsc : current tsc |
| 162 | ****************************************************************************/ |
| 163 | void ltt_event_position_get(LttEventPosition *ep, LttTracefile **tf, |
| 164 | guint *block, guint *offset, guint64 *tsc) |
| 165 | { |
| 166 | *tf = ep->tracefile; |
| 167 | *block = ep->block; |
| 168 | *offset = ep->offset; |
| 169 | *tsc = ep->tsc; |
| 170 | } |
| 171 | |
| 172 | |
| 173 | void ltt_event_position_set(LttEventPosition *ep, LttTracefile *tf, |
| 174 | guint block, guint offset, guint64 tsc) |
| 175 | { |
| 176 | ep->tracefile = tf; |
| 177 | ep->block = block; |
| 178 | ep->offset = offset; |
| 179 | ep->tsc = tsc; |
| 180 | } |
| 181 | |
| 182 | |
| 183 | /***************************************************************************** |
| 184 | *Function name |
| 185 | * ltt_event_position : get the event's position |
| 186 | *Input params |
| 187 | * e : an instance of an event type |
| 188 | * ep : a pointer to event's position structure |
| 189 | ****************************************************************************/ |
| 190 | |
| 191 | void ltt_event_position(LttEvent *e, LttEventPosition *ep) |
| 192 | { |
| 193 | ep->tracefile = e->tracefile; |
| 194 | ep->block = e->block; |
| 195 | ep->offset = e->offset; |
| 196 | ep->tsc = e->tsc; |
| 197 | } |
| 198 | |
| 199 | LttEventPosition * ltt_event_position_new() |
| 200 | { |
| 201 | return g_new(LttEventPosition, 1); |
| 202 | } |
| 203 | |
| 204 | |
| 205 | /***************************************************************************** |
| 206 | * Function name |
| 207 | * ltt_event_position_compare : compare two positions |
| 208 | * A NULL value is infinite. |
| 209 | * Input params |
| 210 | * ep1 : a pointer to event's position structure |
| 211 | * ep2 : a pointer to event's position structure |
| 212 | * Return |
| 213 | * -1 is ep1 < ep2 |
| 214 | * 1 if ep1 > ep2 |
| 215 | * 0 if ep1 == ep2 |
| 216 | ****************************************************************************/ |
| 217 | |
| 218 | |
| 219 | gint ltt_event_position_compare(const LttEventPosition *ep1, |
| 220 | const LttEventPosition *ep2) |
| 221 | { |
| 222 | if(ep1 == NULL && ep2 == NULL) |
| 223 | return 0; |
| 224 | if(ep1 != NULL && ep2 == NULL) |
| 225 | return -1; |
| 226 | if(ep1 == NULL && ep2 != NULL) |
| 227 | return 1; |
| 228 | |
| 229 | if(ep1->tracefile != ep2->tracefile) |
| 230 | g_error("ltt_event_position_compare on different tracefiles makes no sense"); |
| 231 | |
| 232 | if(ep1->block < ep2->block) |
| 233 | return -1; |
| 234 | if(ep1->block > ep2->block) |
| 235 | return 1; |
| 236 | if(ep1->offset < ep2->offset) |
| 237 | return -1; |
| 238 | if(ep1->offset > ep2->offset) |
| 239 | return 1; |
| 240 | return 0; |
| 241 | } |
| 242 | |
| 243 | /***************************************************************************** |
| 244 | * Function name |
| 245 | * ltt_event_position_copy : copy position |
| 246 | * Input params |
| 247 | * src : a pointer to event's position structure source |
| 248 | * dest : a pointer to event's position structure dest |
| 249 | * Return |
| 250 | * void |
| 251 | ****************************************************************************/ |
| 252 | void ltt_event_position_copy(LttEventPosition *dest, |
| 253 | const LttEventPosition *src) |
| 254 | { |
| 255 | if(src == NULL) |
| 256 | dest = NULL; |
| 257 | else |
| 258 | *dest = *src; |
| 259 | } |
| 260 | |
| 261 | |
| 262 | |
| 263 | LttTracefile *ltt_event_position_tracefile(LttEventPosition *ep) |
| 264 | { |
| 265 | return ep->tracefile; |
| 266 | } |
| 267 | |
| 268 | /***************************************************************************** |
| 269 | *Function name |
| 270 | * ltt_event_cpu_i: get the cpu id where the event happens |
| 271 | *Input params |
| 272 | * e : an instance of an event type |
| 273 | *Return value |
| 274 | * unsigned : the cpu id |
| 275 | ****************************************************************************/ |
| 276 | |
| 277 | unsigned ltt_event_cpu_id(LttEvent *e) |
| 278 | { |
| 279 | return e->tracefile->cpu_num; |
| 280 | } |
| 281 | |
| 282 | /***************************************************************************** |
| 283 | *Function name |
| 284 | * ltt_event_data : get the raw data for the event |
| 285 | *Input params |
| 286 | * e : an instance of an event type |
| 287 | *Return value |
| 288 | * void * : pointer to the raw data for the event |
| 289 | ****************************************************************************/ |
| 290 | |
| 291 | void *ltt_event_data(LttEvent *e) |
| 292 | { |
| 293 | return e->data; |
| 294 | } |
| 295 | |
| 296 | /***************************************************************************** |
| 297 | *Function name |
| 298 | * ltt_event_field_element_number |
| 299 | * : The number of elements in a sequence field is specific |
| 300 | * to each event. This function returns the number of |
| 301 | * elements for an array or sequence field in an event. |
| 302 | *Input params |
| 303 | * e : an instance of an event type |
| 304 | * f : a field of the instance |
| 305 | *Return value |
| 306 | * unsigned : the number of elements for an array/sequence field |
| 307 | ****************************************************************************/ |
| 308 | guint64 ltt_event_field_element_number(LttEvent *e, LttField *f) |
| 309 | { |
| 310 | if(f->field_type.type_class != LTT_ARRAY && |
| 311 | f->field_type.type_class != LTT_SEQUENCE) |
| 312 | return 0; |
| 313 | |
| 314 | if(f->field_type.type_class == LTT_ARRAY) |
| 315 | return f->field_type.size; |
| 316 | return ltt_event_get_long_unsigned(e, &g_array_index(f->field_type.fields, |
| 317 | LttField, 0)); |
| 318 | } |
| 319 | |
| 320 | /***************************************************************************** |
| 321 | *Function name |
| 322 | * ltt_event_field_element_select |
| 323 | * : Set the currently selected element for a sequence or |
| 324 | * array field |
| 325 | * O(1) because of offset array. |
| 326 | *Input params |
| 327 | * e : an instance of an event type |
| 328 | * f : a field of the instance |
| 329 | * i : the ith element (0, ...) |
| 330 | *returns : the child field, at the right index, updated. |
| 331 | ****************************************************************************/ |
| 332 | LttField *ltt_event_field_element_select(LttEvent *e, LttField *f, gulong i) |
| 333 | { |
| 334 | gulong element_number; |
| 335 | LttField *field; |
| 336 | unsigned int k; |
| 337 | size_t size; |
| 338 | LttEventType *event_type; |
| 339 | off_t new_offset; |
| 340 | |
| 341 | if(f->field_type.type_class != LTT_ARRAY && |
| 342 | f->field_type.type_class != LTT_SEQUENCE) |
| 343 | return NULL; |
| 344 | |
| 345 | element_number = ltt_event_field_element_number(e,f); |
| 346 | event_type = ltt_event_eventtype(e); |
| 347 | /* Sanity check for i : 0..n-1 only, and must be lower or equal element_number |
| 348 | */ |
| 349 | if(i >= element_number) return NULL; |
| 350 | |
| 351 | if(f->field_type.type_class == LTT_ARRAY) { |
| 352 | field = &g_array_index(f->field_type.fields, LttField, 0); |
| 353 | } else { |
| 354 | field = &g_array_index(f->field_type.fields, LttField, 1); |
| 355 | } |
| 356 | |
| 357 | if(field->field_size != 0) { |
| 358 | if(f->array_offset + (i * field->field_size) == field->offset_root) |
| 359 | return field; /* fixed length child, already at the right offset */ |
| 360 | else |
| 361 | new_offset = f->array_offset + (i * field->field_size); |
| 362 | } else { |
| 363 | /* Var. len. child */ |
| 364 | new_offset = g_array_index(f->dynamic_offsets, off_t, i); |
| 365 | } |
| 366 | compute_fields_offsets(e->tracefile, |
| 367 | ltt_event_facility(e), field, &new_offset, e->data, 0); |
| 368 | |
| 369 | return field; |
| 370 | } |
| 371 | |
| 372 | |
| 373 | off_t ltt_event_field_offset(LttEvent *e, LttField *f) |
| 374 | { |
| 375 | return f->offset_root; |
| 376 | } |
| 377 | |
| 378 | |
| 379 | |
| 380 | /***************************************************************************** |
| 381 | * These functions extract data from an event after architecture specific |
| 382 | * conversions |
| 383 | ****************************************************************************/ |
| 384 | guint32 ltt_event_get_unsigned(LttEvent *e, LttField *f) |
| 385 | { |
| 386 | gboolean reverse_byte_order; |
| 387 | if(unlikely(f->field_type.network)) { |
| 388 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 389 | } else { |
| 390 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 391 | } |
| 392 | |
| 393 | switch(f->field_size) { |
| 394 | case 1: |
| 395 | { |
| 396 | guint8 x = *(guint8 *)(e->data + f->offset_root); |
| 397 | return (guint32) x; |
| 398 | } |
| 399 | break; |
| 400 | case 2: |
| 401 | return (guint32)ltt_get_uint16(reverse_byte_order, e->data + f->offset_root); |
| 402 | break; |
| 403 | case 4: |
| 404 | return (guint32)ltt_get_uint32(reverse_byte_order, e->data + f->offset_root); |
| 405 | break; |
| 406 | case 8: |
| 407 | default: |
| 408 | g_critical("ltt_event_get_unsigned : field size %i unknown", f->field_size); |
| 409 | return 0; |
| 410 | break; |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | gint32 ltt_event_get_int(LttEvent *e, LttField *f) |
| 415 | { |
| 416 | gboolean reverse_byte_order; |
| 417 | if(unlikely(f->field_type.network)) { |
| 418 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 419 | } else { |
| 420 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 421 | } |
| 422 | |
| 423 | switch(f->field_size) { |
| 424 | case 1: |
| 425 | { |
| 426 | gint8 x = *(gint8 *)(e->data + f->offset_root); |
| 427 | return (gint32) x; |
| 428 | } |
| 429 | break; |
| 430 | case 2: |
| 431 | return (gint32)ltt_get_int16(reverse_byte_order, e->data + f->offset_root); |
| 432 | break; |
| 433 | case 4: |
| 434 | return (gint32)ltt_get_int32(reverse_byte_order, e->data + f->offset_root); |
| 435 | break; |
| 436 | case 8: |
| 437 | default: |
| 438 | g_critical("ltt_event_get_int : field size %i unknown", f->field_size); |
| 439 | return 0; |
| 440 | break; |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | guint64 ltt_event_get_long_unsigned(LttEvent *e, LttField *f) |
| 445 | { |
| 446 | gboolean reverse_byte_order; |
| 447 | if(unlikely(f->field_type.network)) { |
| 448 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 449 | } else { |
| 450 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 451 | } |
| 452 | |
| 453 | switch(f->field_size) { |
| 454 | case 1: |
| 455 | { |
| 456 | guint8 x = *(guint8 *)(e->data + f->offset_root); |
| 457 | return (guint64) x; |
| 458 | } |
| 459 | break; |
| 460 | case 2: |
| 461 | return (guint64)ltt_get_uint16(reverse_byte_order, e->data + f->offset_root); |
| 462 | break; |
| 463 | case 4: |
| 464 | return (guint64)ltt_get_uint32(reverse_byte_order, e->data + f->offset_root); |
| 465 | break; |
| 466 | case 8: |
| 467 | return ltt_get_uint64(reverse_byte_order, e->data + f->offset_root); |
| 468 | break; |
| 469 | default: |
| 470 | g_critical("ltt_event_get_long_unsigned : field size %i unknown", f->field_size); |
| 471 | return 0; |
| 472 | break; |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | gint64 ltt_event_get_long_int(LttEvent *e, LttField *f) |
| 477 | { |
| 478 | gboolean reverse_byte_order; |
| 479 | if(unlikely(f->field_type.network)) { |
| 480 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 481 | } else { |
| 482 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 483 | } |
| 484 | |
| 485 | switch(f->field_size) { |
| 486 | case 1: |
| 487 | { |
| 488 | gint8 x = *(gint8 *)(e->data + f->offset_root); |
| 489 | return (gint64) x; |
| 490 | } |
| 491 | break; |
| 492 | case 2: |
| 493 | return (gint64)ltt_get_int16(reverse_byte_order, e->data + f->offset_root); |
| 494 | break; |
| 495 | case 4: |
| 496 | return (gint64)ltt_get_int32(reverse_byte_order, e->data + f->offset_root); |
| 497 | break; |
| 498 | case 8: |
| 499 | return ltt_get_int64(reverse_byte_order, e->data + f->offset_root); |
| 500 | break; |
| 501 | default: |
| 502 | g_critical("ltt_event_get_long_int : field size %i unknown", f->field_size); |
| 503 | return 0; |
| 504 | break; |
| 505 | } |
| 506 | } |
| 507 | |
| 508 | float ltt_event_get_float(LttEvent *e, LttField *f) |
| 509 | { |
| 510 | gboolean reverse_byte_order; |
| 511 | if(unlikely(f->field_type.network)) { |
| 512 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 513 | } else { |
| 514 | g_assert(LTT_HAS_FLOAT(e->tracefile)); |
| 515 | reverse_byte_order = LTT_GET_FLOAT_BO(e->tracefile); |
| 516 | } |
| 517 | |
| 518 | g_assert(f->field_type.type_class == LTT_FLOAT && f->field_size == 4); |
| 519 | |
| 520 | if(reverse_byte_order == 0) return *(float *)(e->data + f->offset_root); |
| 521 | else{ |
| 522 | void *ptr = e->data + f->offset_root; |
| 523 | guint32 value = bswap_32(*(guint32*)ptr); |
| 524 | return *(float*)&value; |
| 525 | } |
| 526 | } |
| 527 | |
| 528 | double ltt_event_get_double(LttEvent *e, LttField *f) |
| 529 | { |
| 530 | gboolean reverse_byte_order; |
| 531 | if(unlikely(f->field_type.network)) { |
| 532 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 533 | } else { |
| 534 | g_assert(LTT_HAS_FLOAT(e->tracefile)); |
| 535 | reverse_byte_order = LTT_GET_FLOAT_BO(e->tracefile); |
| 536 | } |
| 537 | |
| 538 | if(f->field_size == 4) |
| 539 | return ltt_event_get_float(e, f); |
| 540 | |
| 541 | g_assert(f->field_type.type_class == LTT_FLOAT && f->field_size == 8); |
| 542 | |
| 543 | if(reverse_byte_order == 0) return *(double *)(e->data + f->offset_root); |
| 544 | else { |
| 545 | void *ptr = e->data + f->offset_root; |
| 546 | guint64 value = bswap_64(*(guint64*)ptr); |
| 547 | return *(double*)&value; |
| 548 | } |
| 549 | } |
| 550 | |
| 551 | /***************************************************************************** |
| 552 | * The string obtained is only valid until the next read from |
| 553 | * the same tracefile. |
| 554 | ****************************************************************************/ |
| 555 | char *ltt_event_get_string(LttEvent *e, LttField *f) |
| 556 | { |
| 557 | g_assert(f->field_type.type_class == LTT_STRING); |
| 558 | |
| 559 | return (gchar*)g_strdup((gchar*)(e->data + f->offset_root)); |
| 560 | } |
| 561 | |
| 562 | /***************************************************************************** |
| 563 | *Function name |
| 564 | * compute_fields_offsets : set the precomputable offset of the fields |
| 565 | *Input params |
| 566 | * fac : facility |
| 567 | * field : the field |
| 568 | * offset : pointer to the current offset, must be incremented |
| 569 | ****************************************************************************/ |
| 570 | |
| 571 | |
| 572 | void compute_fields_offsets(LttTracefile *tf, |
| 573 | LttFacility *fac, LttField *field, off_t *offset, void *root, guint is_compact) |
| 574 | { |
| 575 | LttType *type = &field->field_type; |
| 576 | |
| 577 | if(unlikely(is_compact)) { |
| 578 | g_assert(field->field_size != 0); |
| 579 | /* FIXME THIS IS A HUUUUUGE hack : |
| 580 | * offset is between the compact_data field in struct LttEvent |
| 581 | * and the address of the field root in the memory map. |
| 582 | * ark. Both will stay at the same addresses while the event |
| 583 | * is readable, so it's ok. |
| 584 | */ |
| 585 | field->offset_root = (unsigned long)(&tf->event.compact_data) |
| 586 | - (unsigned long)root; |
| 587 | field->fixed_root = FIELD_FIXED; |
| 588 | return; |
| 589 | } |
| 590 | |
| 591 | switch(type->type_class) { |
| 592 | case LTT_INT_FIXED: |
| 593 | case LTT_UINT_FIXED: |
| 594 | case LTT_POINTER: |
| 595 | case LTT_CHAR: |
| 596 | case LTT_UCHAR: |
| 597 | case LTT_SHORT: |
| 598 | case LTT_USHORT: |
| 599 | case LTT_INT: |
| 600 | case LTT_UINT: |
| 601 | case LTT_LONG: |
| 602 | case LTT_ULONG: |
| 603 | case LTT_SIZE_T: |
| 604 | case LTT_SSIZE_T: |
| 605 | case LTT_OFF_T: |
| 606 | case LTT_FLOAT: |
| 607 | case LTT_ENUM: |
| 608 | if(field->fixed_root == FIELD_VARIABLE) { |
| 609 | /* Align offset on type size */ |
| 610 | *offset += ltt_align(*offset, get_alignment(field), |
| 611 | fac->alignment); |
| 612 | /* remember offset */ |
| 613 | field->offset_root = *offset; |
| 614 | /* Increment offset */ |
| 615 | *offset += field->field_size; |
| 616 | } else { |
| 617 | //g_debug("type before offset : %llu %llu %u\n", *offset, |
| 618 | // field->offset_root, |
| 619 | // field->field_size); |
| 620 | *offset = field->offset_root; |
| 621 | *offset += field->field_size; |
| 622 | //g_debug("type after offset : %llu\n", *offset); |
| 623 | } |
| 624 | break; |
| 625 | case LTT_STRING: |
| 626 | if(field->fixed_root == FIELD_VARIABLE) { |
| 627 | field->offset_root = *offset; |
| 628 | } |
| 629 | *offset += strlen((gchar*)(root+*offset)) + 1; |
| 630 | /* Realign the data */ |
| 631 | *offset += ltt_align(*offset, fac->pointer_size, |
| 632 | fac->alignment); |
| 633 | break; |
| 634 | case LTT_ARRAY: |
| 635 | g_assert(type->fields->len == 1); |
| 636 | { |
| 637 | off_t local_offset; |
| 638 | LttField *child = &g_array_index(type->fields, LttField, 0); |
| 639 | if(field->fixed_root == FIELD_VARIABLE) { |
| 640 | *offset += ltt_align(*offset, get_alignment(field), |
| 641 | fac->alignment); |
| 642 | /* remember offset */ |
| 643 | field->offset_root = *offset; |
| 644 | field->array_offset = *offset; |
| 645 | } |
| 646 | |
| 647 | if(field->field_size != 0) { |
| 648 | /* Increment offset */ |
| 649 | /* field_size is the array size in bytes */ |
| 650 | *offset = field->offset_root + field->field_size; |
| 651 | } else { |
| 652 | guint i; |
| 653 | *offset = field->array_offset; |
| 654 | field->dynamic_offsets = g_array_set_size(field->dynamic_offsets, |
| 655 | 0); |
| 656 | for(i=0; i<type->size; i++) { |
| 657 | g_array_append_val(field->dynamic_offsets, *offset); |
| 658 | compute_fields_offsets(tf, fac, child, offset, root, is_compact); |
| 659 | } |
| 660 | } |
| 661 | // local_offset = field->array_offset; |
| 662 | // /* Set the offset at position 0 */ |
| 663 | // compute_fields_offsets(tf, fac, child, &local_offset, root); |
| 664 | } |
| 665 | break; |
| 666 | case LTT_SEQUENCE: |
| 667 | g_assert(type->fields->len == 2); |
| 668 | { |
| 669 | off_t local_offset; |
| 670 | LttField *child; |
| 671 | guint i; |
| 672 | guint num_elem; |
| 673 | if(field->fixed_root == FIELD_VARIABLE) { |
| 674 | *offset += ltt_align(*offset, get_alignment(field), |
| 675 | fac->alignment); |
| 676 | /* remember offset */ |
| 677 | field->offset_root = *offset; |
| 678 | |
| 679 | child = &g_array_index(type->fields, LttField, 0); |
| 680 | compute_fields_offsets(tf, fac, child, offset, root, is_compact); |
| 681 | child = &g_array_index(type->fields, LttField, 1); |
| 682 | *offset += ltt_align(*offset, get_alignment(child), |
| 683 | fac->alignment); |
| 684 | field->array_offset = *offset; |
| 685 | |
| 686 | } else { |
| 687 | child = &g_array_index(type->fields, LttField, 1); |
| 688 | } |
| 689 | *offset = field->array_offset; |
| 690 | field->dynamic_offsets = g_array_set_size(field->dynamic_offsets, |
| 691 | 0); |
| 692 | num_elem = ltt_event_field_element_number(&tf->event, field); |
| 693 | for(i=0; i<num_elem; i++) { |
| 694 | g_array_append_val(field->dynamic_offsets, *offset); |
| 695 | compute_fields_offsets(tf, fac, child, offset, root, is_compact); |
| 696 | } |
| 697 | g_assert(num_elem == field->dynamic_offsets->len); |
| 698 | |
| 699 | /* Realign the data */ |
| 700 | *offset += ltt_align(*offset, fac->pointer_size, |
| 701 | fac->alignment); |
| 702 | |
| 703 | // local_offset = field->array_offset; |
| 704 | // /* Set the offset at position 0 */ |
| 705 | // compute_fields_offsets(tf, fac, child, &local_offset, root); |
| 706 | } |
| 707 | break; |
| 708 | case LTT_STRUCT: |
| 709 | { |
| 710 | LttField *child; |
| 711 | guint i; |
| 712 | gint ret=0; |
| 713 | if(field->fixed_root == FIELD_VARIABLE) { |
| 714 | *offset += ltt_align(*offset, get_alignment(field), |
| 715 | fac->alignment); |
| 716 | /* remember offset */ |
| 717 | field->offset_root = *offset; |
| 718 | } else { |
| 719 | *offset = field->offset_root; |
| 720 | } |
| 721 | for(i=0; i<type->fields->len; i++) { |
| 722 | child = &g_array_index(type->fields, LttField, i); |
| 723 | compute_fields_offsets(tf, fac, child, offset, root, is_compact); |
| 724 | } |
| 725 | } |
| 726 | break; |
| 727 | case LTT_UNION: |
| 728 | { |
| 729 | LttField *child; |
| 730 | guint i; |
| 731 | gint ret=0; |
| 732 | if(field->fixed_root == FIELD_VARIABLE) { |
| 733 | *offset += ltt_align(*offset, get_alignment(field), |
| 734 | fac->alignment); |
| 735 | /* remember offset */ |
| 736 | field->offset_root = *offset; |
| 737 | } |
| 738 | for(i=0; i<type->fields->len; i++) { |
| 739 | *offset = field->offset_root; |
| 740 | child = &g_array_index(type->fields, LttField, i); |
| 741 | compute_fields_offsets(tf, fac, child, offset, root, is_compact); |
| 742 | } |
| 743 | *offset = field->offset_root + field->field_size; |
| 744 | } |
| 745 | break; |
| 746 | case LTT_NONE: |
| 747 | default: |
| 748 | g_error("compute_fields_offsets : unknown type"); |
| 749 | } |
| 750 | |
| 751 | } |
| 752 | |
| 753 | |
| 754 | /***************************************************************************** |
| 755 | *Function name |
| 756 | * compute_offsets : set the dynamically computable offsets of an event type |
| 757 | *Input params |
| 758 | * tf : tracefile |
| 759 | * event : event type |
| 760 | * |
| 761 | ****************************************************************************/ |
| 762 | void compute_offsets(LttTracefile *tf, LttFacility *fac, |
| 763 | LttEventType *event, off_t *offset, void *root) |
| 764 | { |
| 765 | guint i; |
| 766 | |
| 767 | /* compute all variable offsets */ |
| 768 | for(i=0; i<event->fields->len; i++) { |
| 769 | //g_debug("computing offset %u of %u\n", i, event->fields->len-1); |
| 770 | LttField *field = &g_array_index(event->fields, LttField, i); |
| 771 | if(event->has_compact_data && i == 0) |
| 772 | compute_fields_offsets(tf, fac, field, offset, root, 1); |
| 773 | else |
| 774 | compute_fields_offsets(tf, fac, field, offset, root, 0); |
| 775 | } |
| 776 | |
| 777 | } |
| 778 | |