| 1 | #include <stdlib.h> |
| 2 | #include <string.h> |
| 3 | #include <stdio.h> |
| 4 | |
| 5 | #include "LTTTypes.h" |
| 6 | #include "parser.h" |
| 7 | #include <ltt/facility.h> |
| 8 | |
| 9 | /* search for the (named) type in the table, if it does not exist |
| 10 | create a new one */ |
| 11 | ltt_type * lookup_named_type(ltt_facility *fac, type_descriptor * td); |
| 12 | |
| 13 | /* construct directed acyclic graph for types, and tree for fields */ |
| 14 | void constructTypeAndFields(ltt_facility * fac,type_descriptor * td, |
| 15 | ltt_field * fld); |
| 16 | |
| 17 | /* generate the facility according to the events belongin to it */ |
| 18 | void generateFacility(ltt_facility * facility, char * pathname, |
| 19 | ltt_checksum checksum, sequence * events); |
| 20 | |
| 21 | /* functions to release the memory occupied by a facility */ |
| 22 | void freeFacility(ltt_facility * facility); |
| 23 | void freeEventtype(ltt_eventtype * evType); |
| 24 | void freeAllNamedTypes(table * named_types); |
| 25 | void freeAllUnamedTypes(sequence * unnamed_types); |
| 26 | void freeAllFields(sequence * all_fields); |
| 27 | void freeLttType(ltt_type * type); |
| 28 | void freeLttField(ltt_field * fld); |
| 29 | |
| 30 | |
| 31 | /***************************************************************************** |
| 32 | *Function name |
| 33 | * ltt_facility_open : open a facility |
| 34 | *Input params |
| 35 | * pathname : the path name of the facility |
| 36 | * c : checksum of the facility registered in kernal |
| 37 | *Return value |
| 38 | * ltt_facility* : return a ltt_facility |
| 39 | ****************************************************************************/ |
| 40 | |
| 41 | ltt_facility * ltt_facility_open(char * pathname, ltt_checksum c) |
| 42 | { |
| 43 | char *token; |
| 44 | parse_file in; |
| 45 | char buffer[BUFFER_SIZE]; |
| 46 | ltt_checksum checksum; |
| 47 | event *ev; |
| 48 | sequence events; |
| 49 | table namedTypes; |
| 50 | sequence unnamedTypes; |
| 51 | ltt_facility * aFacility = NULL; |
| 52 | |
| 53 | sequence_init(&events); |
| 54 | table_init(&namedTypes); |
| 55 | sequence_init(&unnamedTypes); |
| 56 | |
| 57 | in.buffer = buffer; |
| 58 | in.lineno = 0; |
| 59 | in.error = error_callback; |
| 60 | in.name = appendString(pathname,".event"); |
| 61 | |
| 62 | in.fp = fopen(in.name, "r"); |
| 63 | if(!in.fp )g_error("cannot open input file: %s\n", in.name); |
| 64 | |
| 65 | while(1){ |
| 66 | token = getToken(&in); |
| 67 | if(in.type == ENDFILE) break; |
| 68 | |
| 69 | if(strcmp("event",token) == 0) { |
| 70 | ev = g_new(event,1); |
| 71 | sequence_push(&events,ev); |
| 72 | parseEvent(&in,ev, &unnamedTypes, &namedTypes); |
| 73 | } |
| 74 | else if(strcmp("type",token) == 0) { |
| 75 | parseTypeDefinition(&in, &unnamedTypes, &namedTypes); |
| 76 | } |
| 77 | else g_error("event or type token expected\n"); |
| 78 | } |
| 79 | |
| 80 | fclose(in.fp); |
| 81 | |
| 82 | checkNamedTypesImplemented(&namedTypes); |
| 83 | |
| 84 | generateChecksum(pathname, &checksum, &events); |
| 85 | |
| 86 | //yxx disable during the test |
| 87 | aFacility = g_new(ltt_facility,1); |
| 88 | generateFacility(aFacility, pathname, checksum, &events); |
| 89 | /* |
| 90 | if(checksum == c){ |
| 91 | aFacility = g_new(ltt_facility,1); |
| 92 | generateFacility(aFacility, pathname, checksum, &events); |
| 93 | }else{ |
| 94 | g_error("local facility is different from the one registered in the kernel"); |
| 95 | } |
| 96 | */ |
| 97 | |
| 98 | free(in.name); |
| 99 | freeEvents(&events); |
| 100 | sequence_dispose(&events); |
| 101 | freeNamedType(&namedTypes); |
| 102 | table_dispose(&namedTypes); |
| 103 | freeTypes(&unnamedTypes); |
| 104 | sequence_dispose(&unnamedTypes); |
| 105 | |
| 106 | return aFacility; |
| 107 | } |
| 108 | |
| 109 | |
| 110 | /***************************************************************************** |
| 111 | *Function name |
| 112 | * generateFacility : generate facility, internal function |
| 113 | *Input params |
| 114 | * facility : facilty structure |
| 115 | * facName : facility name |
| 116 | * checksum : checksum of the facility |
| 117 | * events : sequence of events belonging to the facility |
| 118 | ****************************************************************************/ |
| 119 | |
| 120 | void generateFacility(ltt_facility * facility, char * pathname, |
| 121 | ltt_checksum checksum, sequence * events) |
| 122 | { |
| 123 | char * facilityName; |
| 124 | int i; |
| 125 | ltt_eventtype * evType; |
| 126 | ltt_field * field; |
| 127 | ltt_type * type; |
| 128 | |
| 129 | //get the facility name (strip any leading directory) |
| 130 | facilityName = strrchr(pathname,'/'); |
| 131 | if(facilityName) facilityName++; |
| 132 | else facilityName = pathname; |
| 133 | |
| 134 | facility->name = g_strdup(facilityName); |
| 135 | facility->event_number = events->position; |
| 136 | facility->checksum = checksum; |
| 137 | facility->usage_count = 0; |
| 138 | |
| 139 | //initialize inner structures |
| 140 | facility->events = g_new(ltt_eventtype*,facility->event_number); |
| 141 | sequence_init(&(facility->all_fields)); |
| 142 | sequence_init(&(facility->all_unnamed_types)); |
| 143 | table_init(&(facility->all_named_types)); |
| 144 | |
| 145 | //for each event, construct field tree and type graph |
| 146 | for(i=0;i<events->position;i++){ |
| 147 | evType = g_new(ltt_eventtype,1); |
| 148 | facility->events[i] = evType; |
| 149 | |
| 150 | evType->name = g_strdup(((event*)(events->array[i]))->name); |
| 151 | evType->description=g_strdup(((event*)(events->array[i]))->description); |
| 152 | |
| 153 | field = g_new(ltt_field, 1); |
| 154 | sequence_push(&(facility->all_fields), field); |
| 155 | evType->root_field = field; |
| 156 | evType->facility = facility; |
| 157 | evType->index = i; |
| 158 | |
| 159 | field->field_pos = 0; |
| 160 | type = lookup_named_type(facility,((event*)(events->array[i]))->type); |
| 161 | field->field_type = type; |
| 162 | field->offset_root = 0; |
| 163 | field->fixed_root = 1; |
| 164 | field->offset_parent = 0; |
| 165 | field->fixed_parent = 1; |
| 166 | // field->base_address = NULL; |
| 167 | field->field_size = 0; |
| 168 | field->field_fixed = -1; |
| 169 | field->parent = NULL; |
| 170 | field->child = NULL; |
| 171 | field->current_element = 0; |
| 172 | |
| 173 | //construct field tree and type graph |
| 174 | constructTypeAndFields(facility,((event*)(events->array[i]))->type,field); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | |
| 179 | /***************************************************************************** |
| 180 | *Function name |
| 181 | * constructTypeAndFields : construct field tree and type graph, |
| 182 | * internal recursion function |
| 183 | *Input params |
| 184 | * fac : facility struct |
| 185 | * td : type descriptor |
| 186 | * root_field : root field of the event |
| 187 | ****************************************************************************/ |
| 188 | |
| 189 | void constructTypeAndFields(ltt_facility * fac,type_descriptor * td, |
| 190 | ltt_field * fld) |
| 191 | { |
| 192 | int i; |
| 193 | type_descriptor * tmpTd; |
| 194 | |
| 195 | // if(td->type == LTT_STRING || td->type == LTT_SEQUENCE) |
| 196 | // fld->field_size = 0; |
| 197 | // else fld->field_size = -1; |
| 198 | |
| 199 | if(td->type == LTT_ENUM){ |
| 200 | fld->field_type->element_number = td->labels.position; |
| 201 | fld->field_type->enum_strings = g_new(char*,td->labels.position); |
| 202 | for(i=0;i<td->labels.position;i++){ |
| 203 | fld->field_type->enum_strings[i] |
| 204 | = g_strdup(((char*)(td->labels.array[i]))); |
| 205 | } |
| 206 | }else if(td->type == LTT_ARRAY || td->type == LTT_SEQUENCE){ |
| 207 | if(td->type == LTT_ARRAY) |
| 208 | fld->field_type->element_number = (unsigned)td->size; |
| 209 | fld->field_type->element_type = g_new(ltt_type*,1); |
| 210 | tmpTd = td->nested_type; |
| 211 | fld->field_type->element_type[0] = lookup_named_type(fac, tmpTd); |
| 212 | fld->child = g_new(ltt_field*, 1); |
| 213 | fld->child[0] = g_new(ltt_field, 1); |
| 214 | sequence_push(&(fac->all_fields), fld->child[0]); |
| 215 | |
| 216 | fld->child[0]->field_pos = 0; |
| 217 | fld->child[0]->field_type = fld->field_type->element_type[0]; |
| 218 | fld->child[0]->offset_root = fld->offset_root; |
| 219 | fld->child[0]->fixed_root = fld->fixed_root; |
| 220 | fld->child[0]->offset_parent = 0; |
| 221 | fld->child[0]->fixed_parent = 1; |
| 222 | // fld->child[0]->base_address = NULL; |
| 223 | fld->child[0]->field_size = 0; |
| 224 | fld->child[0]->field_fixed = -1; |
| 225 | fld->child[0]->parent = fld; |
| 226 | fld->child[0]->child = NULL; |
| 227 | fld->child[0]->current_element = 0; |
| 228 | constructTypeAndFields(fac, tmpTd, fld->child[0]); |
| 229 | }else if(td->type == LTT_STRUCT){ |
| 230 | fld->field_type->element_number = td->fields.position; |
| 231 | fld->field_type->element_type = g_new(ltt_type*, td->fields.position); |
| 232 | fld->child = g_new(ltt_field*, td->fields.position); |
| 233 | for(i=0;i<td->fields.position;i++){ |
| 234 | tmpTd = ((field*)(td->fields.array[i]))->type; |
| 235 | fld->field_type->element_type[i] = lookup_named_type(fac, tmpTd); |
| 236 | fld->child[i] = g_new(ltt_field,1); |
| 237 | sequence_push(&(fac->all_fields), fld->child[i]); |
| 238 | |
| 239 | fld->child[i]->field_pos = i; |
| 240 | fld->child[i]->field_type = fld->field_type->element_type[i]; |
| 241 | fld->child[i]->field_type->element_name |
| 242 | = g_strdup(((field*)(td->fields.array[i]))->name); |
| 243 | fld->child[i]->offset_root = -1; |
| 244 | fld->child[i]->fixed_root = -1; |
| 245 | fld->child[i]->offset_parent = -1; |
| 246 | fld->child[i]->fixed_parent = -1; |
| 247 | // fld->child[i]->base_address = NULL; |
| 248 | fld->child[i]->field_size = 0; |
| 249 | fld->child[i]->field_fixed = -1; |
| 250 | fld->child[i]->parent = fld; |
| 251 | fld->child[i]->child = NULL; |
| 252 | fld->child[i]->current_element = 0; |
| 253 | constructTypeAndFields(fac, tmpTd, fld->child[i]); |
| 254 | } |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | |
| 259 | /***************************************************************************** |
| 260 | *Function name |
| 261 | * lookup_named_type: search named type in the table |
| 262 | * internal function |
| 263 | *Input params |
| 264 | * fac : facility struct |
| 265 | * td : type descriptor |
| 266 | *Return value |
| 267 | * : either find the named type, or create a new ltt_type |
| 268 | ****************************************************************************/ |
| 269 | |
| 270 | ltt_type * lookup_named_type(ltt_facility *fac, type_descriptor * td) |
| 271 | { |
| 272 | ltt_type * lttType = NULL; |
| 273 | int i; |
| 274 | char * name; |
| 275 | if(td->type_name){ |
| 276 | for(i=0;i<fac->all_named_types.keys.position;i++){ |
| 277 | name = (char *)(fac->all_named_types.keys.array[i]); |
| 278 | if(strcmp(name, td->type_name)==0){ |
| 279 | lttType = (ltt_type*)(fac->all_named_types.values.array[i]); |
| 280 | break; |
| 281 | } |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | if(!lttType){ |
| 286 | lttType = g_new(ltt_type,1); |
| 287 | lttType->type_class = td->type; |
| 288 | if(td->fmt) lttType->fmt = g_strdup(td->fmt); |
| 289 | else lttType->fmt = NULL; |
| 290 | lttType->size = td->size; |
| 291 | lttType->enum_strings = NULL; |
| 292 | lttType->element_type = NULL; |
| 293 | lttType->element_number = 0; |
| 294 | if(td->type_name){ |
| 295 | name = g_strdup(td->type_name); |
| 296 | table_insert(&(fac->all_named_types),name,lttType); |
| 297 | lttType->element_name = name; |
| 298 | } |
| 299 | else{ |
| 300 | sequence_push(&(fac->all_unnamed_types), lttType); |
| 301 | lttType->element_name = NULL; |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | return lttType; |
| 306 | } |
| 307 | |
| 308 | |
| 309 | /***************************************************************************** |
| 310 | *Function name |
| 311 | * ltt_facility_close : close a facility, decrease its usage count, |
| 312 | * if usage count = 0, release the memory |
| 313 | *Input params |
| 314 | * f : facility that will be closed |
| 315 | *Return value |
| 316 | * int : usage count ?? status |
| 317 | ****************************************************************************/ |
| 318 | |
| 319 | int ltt_facility_close(ltt_facility *f) |
| 320 | { |
| 321 | // f->usage_count--; |
| 322 | if(f->usage_count > 0) return f->usage_count; |
| 323 | |
| 324 | //release the memory it occupied |
| 325 | freeFacility(f); |
| 326 | |
| 327 | return 0; |
| 328 | } |
| 329 | |
| 330 | /***************************************************************************** |
| 331 | * Functions to release the memory occupied by the facility |
| 332 | ****************************************************************************/ |
| 333 | |
| 334 | void freeFacility(ltt_facility * fac) |
| 335 | { |
| 336 | int i; |
| 337 | g_free(fac->name); //free facility name |
| 338 | |
| 339 | //free event types |
| 340 | for(i=0;i<fac->event_number;i++){ |
| 341 | freeEventtype(fac->events[i]); |
| 342 | } |
| 343 | |
| 344 | //free all named types |
| 345 | freeAllNamedTypes(&(fac->all_named_types)); |
| 346 | |
| 347 | //free all unnamed types |
| 348 | freeAllUnamedTypes(&(fac->all_unnamed_types)); |
| 349 | |
| 350 | //free all fields |
| 351 | freeAllFields(&(fac->all_fields)); |
| 352 | |
| 353 | //free the facility itself |
| 354 | g_free(fac); |
| 355 | } |
| 356 | |
| 357 | void freeEventtype(ltt_eventtype * evType) |
| 358 | { |
| 359 | g_free(evType->name); |
| 360 | if(evType->description) |
| 361 | g_free(evType->description); |
| 362 | g_free(evType); |
| 363 | } |
| 364 | |
| 365 | void freeAllNamedTypes(table * named_types) |
| 366 | { |
| 367 | int i; |
| 368 | for(i=0;i<named_types->keys.position;i++){ |
| 369 | //free the name of the type |
| 370 | g_free((char*)(named_types->keys.array[i])); |
| 371 | |
| 372 | //free type |
| 373 | freeLttType((ltt_type*)(named_types->values.array[i])); |
| 374 | } |
| 375 | table_dispose(named_types); |
| 376 | } |
| 377 | |
| 378 | void freeAllUnamedTypes(sequence * unnamed_types) |
| 379 | { |
| 380 | int i; |
| 381 | for(i=0;i<unnamed_types->position;i++){ |
| 382 | freeLttType((ltt_type*)(unnamed_types->array[i])); |
| 383 | } |
| 384 | sequence_dispose(unnamed_types); |
| 385 | } |
| 386 | |
| 387 | void freeAllFields(sequence * all_fields) |
| 388 | { |
| 389 | int i; |
| 390 | for(i=0;i<all_fields->position;i++){ |
| 391 | freeLttField((ltt_field*)(all_fields->array[i])); |
| 392 | } |
| 393 | sequence_dispose(all_fields); |
| 394 | } |
| 395 | |
| 396 | void freeLttType(ltt_type * type) |
| 397 | { |
| 398 | if(type->element_name) |
| 399 | g_free(type->element_name); |
| 400 | if(type->fmt) |
| 401 | g_free(type->fmt); |
| 402 | if(type->enum_strings) |
| 403 | g_free(type->enum_strings); |
| 404 | if(type->element_type) |
| 405 | g_free(type->element_type); |
| 406 | g_free(type); |
| 407 | } |
| 408 | |
| 409 | void freeLttField(ltt_field * fld) |
| 410 | { |
| 411 | if(fld->child) |
| 412 | g_free(fld->child); |
| 413 | g_free(fld); |
| 414 | } |
| 415 | |
| 416 | /***************************************************************************** |
| 417 | *Function name |
| 418 | * ltt_facility_name : obtain the facility's name |
| 419 | *Input params |
| 420 | * f : the facility that will be closed |
| 421 | *Return value |
| 422 | * char * : the facility's name |
| 423 | ****************************************************************************/ |
| 424 | |
| 425 | char *ltt_facility_name(ltt_facility *f) |
| 426 | { |
| 427 | return f->name; |
| 428 | } |
| 429 | |
| 430 | /***************************************************************************** |
| 431 | *Function name |
| 432 | * ltt_facility_checksum : obtain the facility's checksum |
| 433 | *Input params |
| 434 | * f : the facility that will be closed |
| 435 | *Return value |
| 436 | * ltt_checksum : the checksum of the facility |
| 437 | ****************************************************************************/ |
| 438 | |
| 439 | ltt_checksum ltt_facility_checksum(ltt_facility *f) |
| 440 | { |
| 441 | return f->checksum; |
| 442 | } |
| 443 | |
| 444 | /***************************************************************************** |
| 445 | *Function name |
| 446 | * ltt_facility_eventtype_number: obtain the number of the event types |
| 447 | *Input params |
| 448 | * f : the facility that will be closed |
| 449 | *Return value |
| 450 | * unsigned : the number of the event types |
| 451 | ****************************************************************************/ |
| 452 | |
| 453 | unsigned ltt_facility_eventtype_number(ltt_facility *f) |
| 454 | { |
| 455 | return (unsigned)(f->event_number); |
| 456 | } |
| 457 | |
| 458 | /***************************************************************************** |
| 459 | *Function name |
| 460 | * ltt_facility_eventtype_get: obtain the event type according to event id |
| 461 | * from 0 to event_number - 1 |
| 462 | *Input params |
| 463 | * f : the facility that will be closed |
| 464 | *Return value |
| 465 | * ltt_eventtype * : the event type required |
| 466 | ****************************************************************************/ |
| 467 | |
| 468 | ltt_eventtype *ltt_facility_eventtype_get(ltt_facility *f, unsigned i) |
| 469 | { |
| 470 | return f->events[i]; |
| 471 | } |
| 472 | |
| 473 | /***************************************************************************** |
| 474 | *Function name |
| 475 | * ltt_facility_eventtype_get_by_name |
| 476 | * : obtain the event type according to event name |
| 477 | * event name is unique in the facility |
| 478 | *Input params |
| 479 | * f : the facility that will be closed |
| 480 | * name : the name of the event |
| 481 | *Return value |
| 482 | * ltt_eventtype * : the event type required |
| 483 | ****************************************************************************/ |
| 484 | |
| 485 | ltt_eventtype *ltt_facility_eventtype_get_by_name(ltt_facility *f, char *name) |
| 486 | { |
| 487 | int i; |
| 488 | ltt_eventtype * ev; |
| 489 | for(i=0;i<f->event_number;i++){ |
| 490 | ev = f->events[i]; |
| 491 | if(strcmp(ev->name, name) == 0)break; |
| 492 | } |
| 493 | |
| 494 | if(i==f->event_number) return NULL; |
| 495 | else return ev; |
| 496 | } |
| 497 | |