| 1 | #include <stdio.h> |
| 2 | #include <fcntl.h> |
| 3 | #include <sys/stat.h> |
| 4 | #include <sys/types.h> |
| 5 | #include <linux/errno.h> |
| 6 | |
| 7 | #include "LTTTypes.h" |
| 8 | #include "parser.h" |
| 9 | #include <ltt/tracefile.h> |
| 10 | |
| 11 | //#include "default.h" //yxx test |
| 12 | |
| 13 | /* set the offset of the fields belonging to the event, |
| 14 | need the information of the archecture */ |
| 15 | void setFieldsOffset(ltt_tracefile * t, ltt_eventtype *evT, void *evD); |
| 16 | |
| 17 | /* get the size of the field type according to the archtecture's |
| 18 | size and endian type(info of the archecture) */ |
| 19 | int getFieldtypeSize(ltt_tracefile * t, ltt_eventtype * evT, int offsetRoot, |
| 20 | int offsetParent, ltt_field * fld, void * evD ); |
| 21 | |
| 22 | /* read a fixed size or a block information from the file (fd) */ |
| 23 | int readFile(int fd, void * buf, size_t size, char * mesg); |
| 24 | int readBlock(ltt_tracefile * tf, int whichBlock); |
| 25 | |
| 26 | /* calculate cycles per nsec for current block */ |
| 27 | void getCyclePerNsec(ltt_tracefile * t); |
| 28 | |
| 29 | /* functions to release the memory occupied by the tables of a tracefile */ |
| 30 | void freeKey (gpointer key, gpointer value, gpointer user_data); |
| 31 | void freeValue (gpointer key, gpointer value, gpointer user_data); |
| 32 | void freeFacilityNameTable (gpointer key, gpointer value, gpointer user_data); |
| 33 | |
| 34 | /* reinitialize the info of the block which is already in the buffer */ |
| 35 | void updateTracefile(ltt_tracefile * tf); |
| 36 | |
| 37 | /* go to the next event */ |
| 38 | int skipEvent(ltt_tracefile * t); |
| 39 | |
| 40 | /* compare two time (ltt_time), 0:t1=t2, -1:t1<t2, 1:t1>t2 */ |
| 41 | int timecmp(ltt_time * t1, ltt_time * t2); |
| 42 | |
| 43 | /* get an integer number */ |
| 44 | int getIntNumber(int size1, void *evD); |
| 45 | |
| 46 | |
| 47 | /* Time operation macros for ltt_time (struct timespec) */ |
| 48 | /* (T3 = T2 - T1) */ |
| 49 | #define TimeSub(T3, T2, T1) \ |
| 50 | do \ |
| 51 | {\ |
| 52 | (T3).tv_sec = (T2).tv_sec - (T1).tv_sec; \ |
| 53 | (T3).tv_nsec = (T2).tv_nsec - (T1).tv_nsec; \ |
| 54 | if((T3).tv_nsec < 0)\ |
| 55 | {\ |
| 56 | (T3).tv_sec--;\ |
| 57 | (T3).tv_nsec += 1000000000;\ |
| 58 | }\ |
| 59 | } while(0) |
| 60 | |
| 61 | /* (T3 = T2 + T1) */ |
| 62 | #define TimeAdd(T3, T2, T1) \ |
| 63 | do \ |
| 64 | {\ |
| 65 | (T3).tv_sec = (T2).tv_sec + (T1).tv_sec; \ |
| 66 | (T3).tv_nsec = (T2).tv_nsec + (T1).tv_nsec; \ |
| 67 | if((T3).tv_nsec >= 1000000000)\ |
| 68 | {\ |
| 69 | (T3).tv_sec += (T3).tv_nsec / 1000000000;\ |
| 70 | (T3).tv_nsec = (T3).tv_nsec % 1000000000;\ |
| 71 | }\ |
| 72 | } while(0) |
| 73 | |
| 74 | |
| 75 | |
| 76 | /***************************************************************************** |
| 77 | *Function name |
| 78 | * ltt_tracefile_open : open a trace file, construct a ltt_tracefile |
| 79 | *Input params |
| 80 | * pathname : path name of the trace file |
| 81 | *Return value |
| 82 | * ltt_tracefile * : the structure represents the opened trace file |
| 83 | ****************************************************************************/ |
| 84 | |
| 85 | ltt_tracefile *ltt_tracefile_open(char * fileName) |
| 86 | { |
| 87 | ltt_tracefile * tf; |
| 88 | struct stat lTDFStat; /* Trace data file status */ |
| 89 | trace_header_event *trace_header; |
| 90 | block_header a_block_header; |
| 91 | |
| 92 | tf = g_new(ltt_tracefile, 1); |
| 93 | |
| 94 | //open the file |
| 95 | tf->fd = open(fileName, O_RDONLY, 0); |
| 96 | if(tf->fd < 0){ |
| 97 | g_error("Unable to open input data file %s\n", fileName); |
| 98 | } |
| 99 | |
| 100 | // Get the file's status |
| 101 | if(fstat(tf->fd, &lTDFStat) < 0){ |
| 102 | g_error("Unable to get the status of the input data file %s\n", fileName); |
| 103 | } |
| 104 | |
| 105 | // Is the file large enough to contain a trace |
| 106 | if(lTDFStat.st_size < sizeof(block_header) + sizeof(trace_header_event)){ |
| 107 | g_error("The input data file %s does not contain a trace\n", fileName); |
| 108 | } |
| 109 | |
| 110 | //store the size of the file |
| 111 | tf->file_size = lTDFStat.st_size; |
| 112 | |
| 113 | //read the first block header |
| 114 | if(readFile(tf->fd,(void*)&a_block_header, sizeof(block_header), |
| 115 | "Unable to read block header")) |
| 116 | exit(1); |
| 117 | |
| 118 | //read the trace header event |
| 119 | trace_header = g_new(trace_header_event, 1); |
| 120 | if(readFile(tf->fd,(void*)trace_header, sizeof(trace_header_event), |
| 121 | "Unable to read trace header event")) |
| 122 | exit(1); |
| 123 | |
| 124 | tf->block_number = tf->file_size / trace_header->buffer_size; |
| 125 | tf->trace_header = (trace_header_event *)trace_header; |
| 126 | |
| 127 | //allocate memory to contain the info of a block |
| 128 | tf->buffer = (void *) g_new(char, trace_header->buffer_size); |
| 129 | |
| 130 | //read the last block, get the trace end time |
| 131 | if(readBlock(tf,tf->block_number)) exit(1); |
| 132 | tf->end_time = tf->a_block_footer->time; |
| 133 | |
| 134 | //read the first block, get the trace start time |
| 135 | if(tf->block_number != 1) |
| 136 | if(readBlock(tf,1)) exit(1); |
| 137 | tf->start_time = tf->a_block_header->time; |
| 138 | |
| 139 | //get local machine's data type size and endian type |
| 140 | getDataEndianType(&(tf->my_arch_size), &(tf->my_arch_endian)); |
| 141 | |
| 142 | //initialize all tables |
| 143 | tf->eventtype_number = 0; |
| 144 | tf->facility_number = 0; |
| 145 | tf->index_facility = g_hash_table_new (g_int_hash, g_int_equal); |
| 146 | tf->facility_name = g_hash_table_new (g_str_hash, g_str_equal); |
| 147 | tf->base_id_name = g_hash_table_new (g_str_hash, g_int_equal); |
| 148 | tf->eventtype_event_id = g_ptr_array_new(); |
| 149 | |
| 150 | return tf; |
| 151 | } |
| 152 | |
| 153 | /***************************************************************************** |
| 154 | *Function name |
| 155 | * ltt_tracefile_close: close a trace file, release all facilities if their |
| 156 | * usage count == 0 when close_facilities is true |
| 157 | *Input params |
| 158 | * t : tracefile which will be closed |
| 159 | * close_facilities : bool to show if the facilities need to be released |
| 160 | *Return value |
| 161 | * int : ???? |
| 162 | ****************************************************************************/ |
| 163 | |
| 164 | int ltt_tracefile_close(ltt_tracefile *t, int close_facilities) |
| 165 | { |
| 166 | //free index_facility table |
| 167 | g_hash_table_foreach (t->index_facility, freeKey, NULL); |
| 168 | g_hash_table_destroy(t->index_facility); |
| 169 | |
| 170 | //free base_id_facility table |
| 171 | g_hash_table_foreach (t->base_id_name, freeValue, NULL); |
| 172 | g_hash_table_destroy(t->base_id_name); |
| 173 | |
| 174 | //free eventtype_event_id array |
| 175 | g_ptr_array_free (t->eventtype_event_id, TRUE); |
| 176 | |
| 177 | //free facility_name table |
| 178 | g_hash_table_foreach (t->facility_name, freeFacilityNameTable, |
| 179 | GINT_TO_POINTER(1)); |
| 180 | g_hash_table_destroy(t->facility_name); |
| 181 | |
| 182 | //free tracefile structure |
| 183 | g_free(t->trace_header); |
| 184 | g_free(t->buffer); |
| 185 | g_free(t); |
| 186 | return 0; |
| 187 | } |
| 188 | |
| 189 | /***************************************************************************** |
| 190 | * functions to release the memory occupied by the tables of a tracefile |
| 191 | ****************************************************************************/ |
| 192 | |
| 193 | void freeKey (gpointer key, gpointer value, gpointer user_data) |
| 194 | { |
| 195 | g_free(key); |
| 196 | } |
| 197 | |
| 198 | void freeValue (gpointer key, gpointer value, gpointer user_data) |
| 199 | { |
| 200 | g_free(value); |
| 201 | } |
| 202 | |
| 203 | void freeFacilityNameTable (gpointer key, gpointer value, gpointer user_data) |
| 204 | { |
| 205 | ltt_facility * fac = (ltt_facility*) value; |
| 206 | fac->usage_count--; |
| 207 | if(GPOINTER_TO_INT(user_data) != 0) |
| 208 | ltt_facility_close(fac); |
| 209 | } |
| 210 | |
| 211 | /***************************************************************************** |
| 212 | *Function name |
| 213 | * ltt_tracefile_facility_add: increases the facility usage count and also |
| 214 | * specifies the base of the numeric range |
| 215 | * assigned to the event types in the facility |
| 216 | * for this tracefile |
| 217 | *Input params |
| 218 | * t : tracefile that the facility will be added |
| 219 | * f : facility that will be attached to the tracefile |
| 220 | * base_id : the id for the first event of the facility in the |
| 221 | * trace file |
| 222 | *Return value |
| 223 | * int : ???? |
| 224 | ****************************************************************************/ |
| 225 | |
| 226 | int ltt_tracefile_facility_add(ltt_tracefile *t,ltt_facility *f,int base_id) |
| 227 | { |
| 228 | int * id, *index; |
| 229 | int i, j, k; |
| 230 | ltt_eventtype * et; |
| 231 | gpointer tmpPtr; |
| 232 | |
| 233 | //increase the facility usage count |
| 234 | f->usage_count++; |
| 235 | t->eventtype_number += f->event_number; |
| 236 | t->facility_number++; |
| 237 | |
| 238 | //insert the facility into index_facility table |
| 239 | id = g_new(int,1); |
| 240 | *id = t->facility_number; |
| 241 | g_hash_table_insert(t->index_facility, (gpointer)id,(gpointer)f); |
| 242 | |
| 243 | //insert facility name into table: base_id_name |
| 244 | id = g_new(int,1); |
| 245 | *id = base_id; |
| 246 | g_hash_table_insert(t->base_id_name, (gpointer)(f->name), (gpointer)id); |
| 247 | |
| 248 | //insert facility name into table: facility_name |
| 249 | g_hash_table_insert(t->facility_name, (gpointer)(f->name), (gpointer)f); |
| 250 | |
| 251 | //insert eventtype into the array: eventtype_event_id |
| 252 | j = base_id + f->event_number; |
| 253 | k = t->eventtype_event_id->len; |
| 254 | if(j > t->eventtype_event_id->len){ |
| 255 | for(i=0; i < j - k; i++){ |
| 256 | tmpPtr = (gpointer)g_new(ptr_wrap, 1); |
| 257 | g_ptr_array_add(t->eventtype_event_id,tmpPtr); |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | //initialize the unused elements: NULL |
| 262 | if(j-k > f->event_number){ |
| 263 | for(i=k; i<base_id; i++){ |
| 264 | tmpPtr = g_ptr_array_index(t->eventtype_event_id, i); |
| 265 | ((ptr_wrap*)tmpPtr)->ptr = NULL; |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | //initialize the elements with the eventtypes belonging to the facility |
| 270 | for(i=0; i<f->event_number; i++){ |
| 271 | tmpPtr = g_ptr_array_index(t->eventtype_event_id, base_id + i); |
| 272 | ((ptr_wrap*)tmpPtr)->ptr = (gpointer)(f->events[i]); |
| 273 | } |
| 274 | |
| 275 | //update offset |
| 276 | for(i=0; i<f->event_number; i++){ |
| 277 | et = f->events[i]; |
| 278 | setFieldsOffset(t, et, NULL); |
| 279 | } |
| 280 | |
| 281 | |
| 282 | return 0; |
| 283 | } |
| 284 | |
| 285 | /***************************************************************************** |
| 286 | * The following functions used to query the info of the machine where the |
| 287 | * tracefile was generated. A tracefile may be queried for its architecture |
| 288 | * type(e.g.,"i386", "powerpc", "powerpcle", "s390", "s390x"), its architecture |
| 289 | * variant(e.g., "att" versus "sun" for m68k), its operating system (e.g., |
| 290 | * "linux","bsd"), its generic architecture, and the machine identity (e.g., |
| 291 | * system host name). All character strings belong to the associated tracefile |
| 292 | * and are freed when it is closed |
| 293 | ****************************************************************************/ |
| 294 | |
| 295 | uint32_t ltt_tracefile_arch_type(ltt_tracefile *t) |
| 296 | { |
| 297 | return t->trace_header->arch_type; |
| 298 | } |
| 299 | |
| 300 | uint32_t ltt_tracefile_arch_variant(ltt_tracefile *t) |
| 301 | { |
| 302 | return t->trace_header->arch_variant; |
| 303 | } |
| 304 | |
| 305 | ltt_arch_size ltt_tracefile_arch_size(ltt_tracefile *t) |
| 306 | { |
| 307 | return t->trace_header->arch_size; |
| 308 | } |
| 309 | |
| 310 | ltt_arch_endian ltt_tracefile_arch_endian(ltt_tracefile *t) |
| 311 | { |
| 312 | return t->trace_header->arch_endian; |
| 313 | } |
| 314 | |
| 315 | uint32_t ltt_tracefile_system_type(ltt_tracefile *t) |
| 316 | { |
| 317 | return t->trace_header->system_type; |
| 318 | } |
| 319 | |
| 320 | char *ltt_tracefile_system_name(ltt_tracefile *t) |
| 321 | { |
| 322 | return t->trace_header->system_name; |
| 323 | } |
| 324 | |
| 325 | /***************************************************************************** |
| 326 | *Function name |
| 327 | * ltt_tracefile_cpu_number: get the number of the cpu |
| 328 | *Input params |
| 329 | * t : tracefile |
| 330 | *Return value |
| 331 | * unsigned : the number of cpu the system has |
| 332 | ****************************************************************************/ |
| 333 | |
| 334 | unsigned ltt_tracefile_cpu_number(ltt_tracefile *t) |
| 335 | { |
| 336 | return (unsigned)(t->trace_header->cpu_number); |
| 337 | } |
| 338 | |
| 339 | /***************************************************************************** |
| 340 | *Function name |
| 341 | * ltt_tracefile_cpu_single: does the tracefile contain events only for a |
| 342 | * single CPU ? |
| 343 | *Input params |
| 344 | * t : tracefile |
| 345 | *Return value |
| 346 | * int : 1 for YES, 0 for NO |
| 347 | ****************************************************************************/ |
| 348 | |
| 349 | int ltt_tracefile_cpu_single(ltt_tracefile *t) |
| 350 | { |
| 351 | if(t->trace_header->cpu_number_used == 1) return 1; |
| 352 | else return 0; |
| 353 | } |
| 354 | |
| 355 | /***************************************************************************** |
| 356 | *Function name |
| 357 | * ltt_tracefile_cpu_id: which CPU is contained in the tracefile? |
| 358 | *Input params |
| 359 | * t : tracefile |
| 360 | *Return value |
| 361 | * unsigned : cpu id |
| 362 | ****************************************************************************/ |
| 363 | |
| 364 | unsigned ltt_tracefile_cpu_id(ltt_tracefile *t) |
| 365 | { |
| 366 | return (unsigned)(t->trace_header->cpu_id); |
| 367 | } |
| 368 | |
| 369 | /***************************************************************************** |
| 370 | * The following functions get the times related to the tracefile |
| 371 | ****************************************************************************/ |
| 372 | |
| 373 | ltt_time ltt_tracefile_time_start(ltt_tracefile *t) |
| 374 | { |
| 375 | return t->start_time; |
| 376 | } |
| 377 | |
| 378 | ltt_time ltt_tracefile_time_end(ltt_tracefile *t) |
| 379 | { |
| 380 | return t->end_time; |
| 381 | } |
| 382 | |
| 383 | ltt_time ltt_tracefile_duration(ltt_tracefile *t) |
| 384 | { |
| 385 | ltt_time T; |
| 386 | TimeSub(T, t->end_time, t->start_time); |
| 387 | return T; |
| 388 | } |
| 389 | |
| 390 | /***************************************************************************** |
| 391 | * The following functions discover the facilities added to the tracefile |
| 392 | ****************************************************************************/ |
| 393 | |
| 394 | unsigned ltt_tracefile_facility_number(ltt_tracefile *t) |
| 395 | { |
| 396 | return (unsigned)(t->facility_number); |
| 397 | } |
| 398 | |
| 399 | ltt_facility *ltt_tracefile_facility_get(ltt_tracefile *t, unsigned i) |
| 400 | { |
| 401 | gconstpointer ptr = (gconstpointer)(&i); |
| 402 | if(i<=0 || i> t->facility_number)return NULL; |
| 403 | return (ltt_facility*)g_hash_table_lookup(t->index_facility,ptr); |
| 404 | } |
| 405 | |
| 406 | ltt_facility *ltt_tracefile_facility_get_by_name(ltt_tracefile *t,char *name) |
| 407 | { |
| 408 | ltt_facility * fac; |
| 409 | fac=(ltt_facility*)g_hash_table_lookup(t->facility_name,(gconstpointer)name); |
| 410 | return fac; |
| 411 | } |
| 412 | |
| 413 | /***************************************************************************** |
| 414 | * The following functions to discover all the event types in the facilities |
| 415 | * added to the tracefile. The event type integer id, unique for the trace, |
| 416 | * is used |
| 417 | ****************************************************************************/ |
| 418 | |
| 419 | unsigned ltt_tracefile_eventtype_number(ltt_tracefile *t) |
| 420 | { |
| 421 | return t->eventtype_number; |
| 422 | } |
| 423 | |
| 424 | ltt_eventtype *ltt_tracefile_eventtype_get(ltt_tracefile *t, unsigned evId) |
| 425 | { |
| 426 | ptr_wrap * ptr; |
| 427 | ptr = (ptr_wrap *)g_ptr_array_index(t->eventtype_event_id, (gint)evId); |
| 428 | return (ltt_eventtype *)(ptr->ptr); |
| 429 | } |
| 430 | |
| 431 | /***************************************************************************** |
| 432 | *Function name |
| 433 | * ltt_tracefile_eventtype_id |
| 434 | * : given an event type, find its unique id within |
| 435 | * the tracefile |
| 436 | *Input params |
| 437 | * t : tracefile |
| 438 | * et : event type |
| 439 | *Return value |
| 440 | * unsigned : id of the event type in the tracefile |
| 441 | ****************************************************************************/ |
| 442 | |
| 443 | unsigned ltt_tracefile_eventtype_id(ltt_tracefile *t, ltt_eventtype *et) |
| 444 | { |
| 445 | int *id; |
| 446 | char *name = et->facility->name; |
| 447 | |
| 448 | id = (int*)g_hash_table_lookup(t->base_id_name, (gconstpointer)name); |
| 449 | if(!id)return 0; |
| 450 | return (unsigned)(*id + et->index); |
| 451 | } |
| 452 | |
| 453 | /***************************************************************************** |
| 454 | *Function name |
| 455 | * ltt_tracefile_eventtype_root_field |
| 456 | * : get the root field associated with an event type |
| 457 | * for the tracefile |
| 458 | *Input params |
| 459 | * t : tracefile |
| 460 | * id : event id |
| 461 | *Return value |
| 462 | * ltt_field * : root field of the event |
| 463 | ****************************************************************************/ |
| 464 | |
| 465 | ltt_field *ltt_tracefile_eventtype_root_field(ltt_tracefile *t, unsigned id) |
| 466 | { |
| 467 | ltt_eventtype * et; |
| 468 | et = ltt_tracefile_eventtype_get(t, id); |
| 469 | if(!et) return NULL; |
| 470 | return et->root_field; |
| 471 | } |
| 472 | |
| 473 | /***************************************************************************** |
| 474 | *Function name |
| 475 | * ltt_tracefile_seek_time: seek to the first event of the trace with time |
| 476 | * larger or equal to time |
| 477 | *Input params |
| 478 | * t : tracefile |
| 479 | * time : criteria of the time |
| 480 | *Return value |
| 481 | * int : error code |
| 482 | * ENOENT, end of the file |
| 483 | * EINVAL, lseek fail |
| 484 | * EIO, can not read from the file |
| 485 | ****************************************************************************/ |
| 486 | |
| 487 | int ltt_tracefile_seek_time(ltt_tracefile *t, ltt_time time) |
| 488 | { |
| 489 | int err; |
| 490 | ltt_time lttTime; |
| 491 | int headTime = timecmp(&(t->a_block_header->time), &time); |
| 492 | int tailTime = timecmp(&(t->a_block_footer->time), &time); |
| 493 | |
| 494 | if(headTime < 0 && tailTime > 0){ |
| 495 | lttTime = getEventTime(t); |
| 496 | err = timecmp(<tTime, &time); |
| 497 | if(err >= 0){ |
| 498 | if( ( (t->which_block != 1 && t->which_event != 0) || |
| 499 | (t->which_block == 1 && t->which_event != 1) ) && |
| 500 | ((t->prev_event_time.tv_sec==0 && t->prev_event_time.tv_nsec==0) || |
| 501 | timecmp(&t->prev_event_time, &time) >= 0 ) ){ |
| 502 | updateTracefile(t); |
| 503 | return ltt_tracefile_seek_time(t, time); |
| 504 | } |
| 505 | }else if(err < 0){ |
| 506 | err = t->which_block; |
| 507 | if(ltt_tracefile_read(t) == NULL) return ENOENT; |
| 508 | if(t->which_block == err) |
| 509 | return ltt_tracefile_seek_time(t,time); |
| 510 | } |
| 511 | }else if(headTime > 0){ |
| 512 | if(t->which_block == 1){ |
| 513 | updateTracefile(t); |
| 514 | }else{ |
| 515 | if( (t->prev_block_end_time.tv_sec == 0 && |
| 516 | t->prev_block_end_time.tv_nsec == 0 ) || |
| 517 | timecmp(&(t->prev_block_end_time),&time) > 0 ){ |
| 518 | err=readBlock(t,t->which_block-1); |
| 519 | if(err) return err; |
| 520 | return ltt_tracefile_seek_time(t, time) ; |
| 521 | }else{ |
| 522 | updateTracefile(t); |
| 523 | } |
| 524 | } |
| 525 | }else if(tailTime <= 0){ |
| 526 | if(t->which_block != t->block_number){ |
| 527 | err=readBlock(t,t->which_block+1); |
| 528 | if(err) return err; |
| 529 | }else return ENOENT; |
| 530 | if(tailTime < 0) return ltt_tracefile_seek_time(t, time); |
| 531 | }else if(headTime == 0){ |
| 532 | updateTracefile(t); |
| 533 | } |
| 534 | return 0; |
| 535 | } |
| 536 | |
| 537 | /***************************************************************************** |
| 538 | *Function name |
| 539 | * ltt_tracefile_read : read the next event |
| 540 | *Input params |
| 541 | * t : tracefile |
| 542 | *Return value |
| 543 | * ltt_event * : an event to be processed |
| 544 | ****************************************************************************/ |
| 545 | |
| 546 | ltt_event *ltt_tracefile_read(ltt_tracefile *t) |
| 547 | { |
| 548 | ltt_event * lttEvent = (ltt_event *)g_new(ltt_event, 1); |
| 549 | ltt_eventtype * evT; |
| 550 | ltt_facility * fac; |
| 551 | |
| 552 | //update the fields of the current event and go to the next event |
| 553 | if(skipEvent(t)) return NULL; |
| 554 | |
| 555 | t->current_event_time = getEventTime(t); |
| 556 | |
| 557 | lttEvent->event_id = (int)(*(uint8_t *)(t->cur_event_pos)); |
| 558 | evT = ltt_tracefile_eventtype_get(t, (unsigned)lttEvent->event_id); |
| 559 | fac = evT->facility; |
| 560 | // if(evT->index == TRACE_EV_HEARTBEAT && strcmp(fac->name, "default")==0) |
| 561 | // t->cur_heart_beat_number++; |
| 562 | lttEvent->cycle_count=*(uint32_t*)(t->cur_event_pos + EVENT_ID_SIZE); |
| 563 | lttEvent->tracefile = t; |
| 564 | lttEvent->data = t->cur_event_pos + EVENT_HEADER_SIZE; |
| 565 | |
| 566 | return lttEvent; |
| 567 | } |
| 568 | |
| 569 | /**************************************************************************** |
| 570 | *Function name |
| 571 | * readFile : wrap function to read from a file |
| 572 | *Input Params |
| 573 | * fd : file descriptor |
| 574 | * buf : buf to contain the content |
| 575 | * size : number of bytes to be read |
| 576 | * mesg : message to be printed if some thing goes wrong |
| 577 | *return value |
| 578 | * 0 : success |
| 579 | * EIO : can not read from the file |
| 580 | ****************************************************************************/ |
| 581 | |
| 582 | int readFile(int fd, void * buf, size_t size, char * mesg) |
| 583 | { |
| 584 | ssize_t nbBytes; |
| 585 | nbBytes = read(fd, buf, size); |
| 586 | if(nbBytes != size){ |
| 587 | printf("%s\n",mesg); |
| 588 | return EIO; |
| 589 | } |
| 590 | return 0; |
| 591 | } |
| 592 | |
| 593 | /**************************************************************************** |
| 594 | *Function name |
| 595 | * readBlock : read a block from the file |
| 596 | *Input Params |
| 597 | * lttdes : ltt trace file |
| 598 | * whichBlock : the block which will be read |
| 599 | *return value |
| 600 | * 0 : success |
| 601 | * EINVAL : lseek fail |
| 602 | * EIO : can not read from the file |
| 603 | ****************************************************************************/ |
| 604 | |
| 605 | int readBlock(ltt_tracefile * tf, int whichBlock) |
| 606 | { |
| 607 | off_t nbBytes; |
| 608 | uint32_t lostSize; |
| 609 | |
| 610 | if(whichBlock - tf->which_block == 1 && tf->which_block != 0){ |
| 611 | tf->prev_block_end_time = tf->a_block_footer->time; |
| 612 | }else{ |
| 613 | tf->prev_block_end_time.tv_sec = 0; |
| 614 | tf->prev_block_end_time.tv_nsec = 0; |
| 615 | } |
| 616 | tf->prev_event_time.tv_sec = 0; |
| 617 | tf->prev_event_time.tv_nsec = 0; |
| 618 | |
| 619 | nbBytes=lseek(tf->fd,(off_t)((whichBlock-1)*tf->trace_header->buffer_size), |
| 620 | SEEK_SET); |
| 621 | if(nbBytes == -1) return EINVAL; |
| 622 | |
| 623 | if(readFile(tf->fd,tf->buffer,tf->trace_header->buffer_size, |
| 624 | "Unable to read a block")) return EIO; |
| 625 | |
| 626 | |
| 627 | tf->a_block_header=(block_header *) tf->buffer; |
| 628 | lostSize = *(uint32_t*)(tf->buffer + tf->trace_header->buffer_size |
| 629 | - sizeof(uint32_t)); |
| 630 | /* skip event ID and time delta to get the address of the block foot */ |
| 631 | tf->a_block_footer=(block_footer *)(tf->buffer+tf->trace_header->buffer_size |
| 632 | -lostSize+sizeof(uint8_t)+sizeof(uint32_t)); |
| 633 | tf->which_block = whichBlock; |
| 634 | tf->which_event = 0; |
| 635 | tf->first_event_pos = tf->buffer + sizeof(block_header); |
| 636 | if(tf->which_block == 1){ |
| 637 | tf->which_event++; |
| 638 | tf->first_event_pos += sizeof(trace_header_event); |
| 639 | } |
| 640 | tf->cur_event_pos = tf->first_event_pos; |
| 641 | tf->current_event_time = tf->a_block_header->time; |
| 642 | tf->cur_heart_beat_number = 0; |
| 643 | |
| 644 | getCyclePerNsec(tf); |
| 645 | |
| 646 | return 0; |
| 647 | } |
| 648 | |
| 649 | /***************************************************************************** |
| 650 | *Function name |
| 651 | * updateTracefile : reinitialize the info of the block which is already |
| 652 | * in the buffer |
| 653 | *Input params |
| 654 | * tf : tracefile |
| 655 | ****************************************************************************/ |
| 656 | |
| 657 | void updateTracefile(ltt_tracefile * tf) |
| 658 | { |
| 659 | if(tf->which_block == 1)tf->which_event = 1; |
| 660 | else tf->which_event = 0; |
| 661 | tf->cur_event_pos = tf->first_event_pos; |
| 662 | tf->current_event_time = tf->a_block_header->time; |
| 663 | tf->cur_heart_beat_number = 0; |
| 664 | |
| 665 | tf->prev_event_time.tv_sec = 0; |
| 666 | tf->prev_event_time.tv_nsec = 0; |
| 667 | } |
| 668 | |
| 669 | /***************************************************************************** |
| 670 | *Function name |
| 671 | * skipEvent : go to the next event, update the fields of the current event |
| 672 | *Input params |
| 673 | * t : tracefile |
| 674 | *return value |
| 675 | * 0 : success |
| 676 | * EINVAL : lseek fail |
| 677 | * EIO : can not read from the file |
| 678 | * ENOENT : end of file |
| 679 | * ERANGE : event id is out of range |
| 680 | ****************************************************************************/ |
| 681 | |
| 682 | int skipEvent(ltt_tracefile * t) |
| 683 | { |
| 684 | int evId, err; |
| 685 | void * evData; |
| 686 | ltt_eventtype * evT; |
| 687 | ltt_field * rootFld; |
| 688 | |
| 689 | evId = (int)(*(uint8_t *)(t->cur_event_pos)); |
| 690 | evData = t->cur_event_pos + EVENT_HEADER_SIZE; |
| 691 | evT = ltt_tracefile_eventtype_get(t,(unsigned)evId); |
| 692 | |
| 693 | if(evT) rootFld = evT->root_field; |
| 694 | else return ERANGE; |
| 695 | |
| 696 | t->prev_event_time = getEventTime(t); |
| 697 | |
| 698 | //event has string/sequence or the last event is not the same event |
| 699 | if((evT->latest_block!=t->which_block || evT->latest_event!=t->which_event) |
| 700 | && rootFld->field_fixed == 0){ |
| 701 | setFieldsOffset(t, evT, evData); |
| 702 | } |
| 703 | t->cur_event_pos += EVENT_HEADER_SIZE + rootFld->field_size; |
| 704 | |
| 705 | evT->latest_block = t->which_block; |
| 706 | evT->latest_event = t->which_event; |
| 707 | |
| 708 | //the next event is in the next block |
| 709 | if(t->which_event == t->a_block_header->event_count - 1){ |
| 710 | if(t->which_block == t->block_number) return ENOENT; |
| 711 | err = readBlock(t, t->which_block + 1); |
| 712 | if(err) return err; |
| 713 | }else{ |
| 714 | t->which_event++; |
| 715 | } |
| 716 | |
| 717 | return 0; |
| 718 | } |
| 719 | |
| 720 | /***************************************************************************** |
| 721 | *Function name |
| 722 | * getCyclePerNsec : calculate cycles per nsec for current block |
| 723 | *Input Params |
| 724 | * t : tracefile |
| 725 | ****************************************************************************/ |
| 726 | |
| 727 | void getCyclePerNsec(ltt_tracefile * t) |
| 728 | { |
| 729 | ltt_time lBufTotalTime; /* Total time for this buffer */ |
| 730 | ltt_cycle_count lBufTotalNSec; /* Total time for this buffer in nsecs */ |
| 731 | ltt_cycle_count lBufTotalCycle;/* Total cycles for this buffer */ |
| 732 | |
| 733 | /* Calculate the total time for this buffer */ |
| 734 | TimeSub(lBufTotalTime,t->a_block_footer->time, t->a_block_header->time); |
| 735 | |
| 736 | /* Calculate the total cycles for this bufffer */ |
| 737 | lBufTotalCycle = t->a_block_footer->cycle_count |
| 738 | - t->a_block_header->cycle_count; |
| 739 | |
| 740 | /* Convert the total time to nsecs */ |
| 741 | lBufTotalNSec = lBufTotalTime.tv_sec * 1000000000 + lBufTotalTime.tv_nsec; |
| 742 | |
| 743 | t->cycle_per_nsec = (double)lBufTotalCycle / (double)lBufTotalNSec; |
| 744 | } |
| 745 | |
| 746 | /**************************************************************************** |
| 747 | *Function name |
| 748 | * getEventTime : obtain the time of an event |
| 749 | *Input params |
| 750 | * tf : tracefile |
| 751 | *Return value |
| 752 | * ltt_time : the time of the event |
| 753 | ****************************************************************************/ |
| 754 | |
| 755 | ltt_time getEventTime(ltt_tracefile * tf) |
| 756 | { |
| 757 | ltt_time time; |
| 758 | ltt_cycle_count cycle_count; /* cycle count for the current event */ |
| 759 | ltt_cycle_count lEventTotalCycle; /* Total cycles from start for event */ |
| 760 | double lEventNSec; /* Total usecs from start for event */ |
| 761 | ltt_time lTimeOffset; /* Time offset in struct ltt_time */ |
| 762 | |
| 763 | /* Calculate total time in cycles from start of buffer for this event */ |
| 764 | cycle_count = *(uint32_t*)(tf->cur_event_pos + EVENT_ID_SIZE); |
| 765 | if(tf->cur_heart_beat_number) |
| 766 | cycle_count += ((uint64_t)1)<<32 * tf->cur_heart_beat_number; |
| 767 | lEventTotalCycle=cycle_count-(tf->a_block_header->cycle_count & 0xFFFFFFFF); |
| 768 | |
| 769 | /* Convert it to nsecs */ |
| 770 | lEventNSec = lEventTotalCycle / tf->cycle_per_nsec; |
| 771 | |
| 772 | /* Determine offset in struct ltt_time */ |
| 773 | lTimeOffset.tv_nsec = (long)lEventNSec % 1000000000; |
| 774 | lTimeOffset.tv_sec = (long)lEventNSec / 1000000000; |
| 775 | |
| 776 | TimeAdd(time, tf->a_block_header->time, lTimeOffset); |
| 777 | |
| 778 | return time; |
| 779 | } |
| 780 | |
| 781 | /***************************************************************************** |
| 782 | *Function name |
| 783 | * setFieldsOffset : set offset of the fields |
| 784 | *Input params |
| 785 | * tracefile : opened trace file |
| 786 | * evT : the event type |
| 787 | * evD : event data, it may be NULL |
| 788 | ****************************************************************************/ |
| 789 | |
| 790 | void setFieldsOffset(ltt_tracefile * t, ltt_eventtype * evT, void * evD) |
| 791 | { |
| 792 | ltt_field * rootFld = evT->root_field; |
| 793 | // rootFld->base_address = evD; |
| 794 | |
| 795 | rootFld->field_size = getFieldtypeSize(t, evT, 0,0,rootFld, evD); |
| 796 | } |
| 797 | |
| 798 | /***************************************************************************** |
| 799 | *Function name |
| 800 | * getFieldtypeSize: get the size of the field type (primitive type) |
| 801 | *Input params |
| 802 | * tracefile : opened trace file |
| 803 | * evT : event type |
| 804 | * offsetRoot : offset from the root |
| 805 | * offsetParent : offset from the parrent |
| 806 | * fld : field |
| 807 | * evD : event data, it may be NULL |
| 808 | *Return value |
| 809 | * int : size of the field |
| 810 | ****************************************************************************/ |
| 811 | |
| 812 | int getFieldtypeSize(ltt_tracefile * t, ltt_eventtype * evT, int offsetRoot, |
| 813 | int offsetParent, ltt_field * fld, void * evD) |
| 814 | { |
| 815 | int size, size1, element_number, i, offset1, offset2; |
| 816 | ltt_type * type = fld->field_type; |
| 817 | |
| 818 | if(evT->latest_block==t->which_block && evT->latest_event==t->which_event){ |
| 819 | return fld->field_size; |
| 820 | } |
| 821 | |
| 822 | if(fld->field_fixed == 1){ |
| 823 | if(fld == evT->root_field) return fld->field_size; |
| 824 | } |
| 825 | |
| 826 | if(type->type_class != LTT_STRUCT && type->type_class != LTT_ARRAY && |
| 827 | type->type_class != LTT_SEQUENCE && type->type_class != LTT_STRING){ |
| 828 | if(fld->field_fixed == -1){ |
| 829 | size = (int) ltt_type_size(t, type); |
| 830 | fld->field_fixed = 1; |
| 831 | }else size = fld->field_size; |
| 832 | |
| 833 | }else if(type->type_class == LTT_ARRAY){ |
| 834 | element_number = (int) type->element_number; |
| 835 | if(fld->field_fixed == -1){ |
| 836 | size = getFieldtypeSize(t, evT, offsetRoot,0,fld->child[0], NULL); |
| 837 | if(size == 0){ //has string or sequence |
| 838 | fld->field_fixed = 0; |
| 839 | }else{ |
| 840 | fld->field_fixed = 1; |
| 841 | size *= element_number; |
| 842 | } |
| 843 | }else if(fld->field_fixed == 0){// has string or sequence |
| 844 | size = 0; |
| 845 | for(i=0;i<element_number;i++){ |
| 846 | size += getFieldtypeSize(t, evT, offsetRoot+size,size, |
| 847 | fld->child[0], evD+size); |
| 848 | } |
| 849 | }else size = fld->field_size; |
| 850 | |
| 851 | }else if(type->type_class == LTT_SEQUENCE){ |
| 852 | size1 = (int) ltt_type_size(t, type); |
| 853 | if(fld->field_fixed == -1){ |
| 854 | fld->field_fixed = 0; |
| 855 | size = getFieldtypeSize(t, evT, offsetRoot,0,fld->child[0], NULL); |
| 856 | fld->element_size = size; |
| 857 | }else{//0: sequence |
| 858 | element_number = getIntNumber(size1,evD); |
| 859 | type->element_number = element_number; |
| 860 | if(fld->element_size > 0){ |
| 861 | size = element_number * fld->element_size; |
| 862 | }else{//sequence has string or sequence |
| 863 | size = 0; |
| 864 | for(i=0;i<element_number;i++){ |
| 865 | size += getFieldtypeSize(t, evT, offsetRoot+size+size1,size+size1, |
| 866 | fld->child[0], evD+size+size1); |
| 867 | } |
| 868 | } |
| 869 | size += size1; |
| 870 | } |
| 871 | |
| 872 | }else if(type->type_class == LTT_STRING){ |
| 873 | size = 0; |
| 874 | if(fld->field_fixed == -1){ |
| 875 | fld->field_fixed = 0; |
| 876 | }else{//0: string |
| 877 | size = sizeof((char*)evD) + 1; //include end : '\0' |
| 878 | } |
| 879 | |
| 880 | }else if(type->type_class == LTT_STRUCT){ |
| 881 | element_number = (int) type->element_number; |
| 882 | size = 0; |
| 883 | if(fld->field_fixed == -1){ |
| 884 | offset1 = offsetRoot; |
| 885 | offset2 = 0; |
| 886 | for(i=0;i<element_number;i++){ |
| 887 | size1=getFieldtypeSize(t, evT,offset1,offset2, fld->child[i], NULL); |
| 888 | if(size1 > 0 && size >= 0){ |
| 889 | size += size1; |
| 890 | if(offset1 >= 0) offset1 += size1; |
| 891 | offset2 += size1; |
| 892 | }else{ |
| 893 | size = -1; |
| 894 | offset1 = -1; |
| 895 | offset2 = -1; |
| 896 | } |
| 897 | } |
| 898 | if(size == -1){ |
| 899 | fld->field_fixed = 0; |
| 900 | size = 0; |
| 901 | }else fld->field_fixed = 1; |
| 902 | }else if(fld->field_fixed == 0){ |
| 903 | offset1 = offsetRoot; |
| 904 | offset2 = 0; |
| 905 | for(i=0;i<element_number;i++){ |
| 906 | size=getFieldtypeSize(t,evT,offset1,offset2,fld->child[i],evD+offset2); |
| 907 | offset1 += size; |
| 908 | offset2 += size; |
| 909 | } |
| 910 | size = offset2; |
| 911 | }else size = fld->field_size; |
| 912 | } |
| 913 | |
| 914 | fld->offset_root = offsetRoot; |
| 915 | fld->offset_parent = offsetParent; |
| 916 | if(!evD){ |
| 917 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 918 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 919 | } |
| 920 | fld->field_size = size; |
| 921 | |
| 922 | return size; |
| 923 | } |
| 924 | |
| 925 | /***************************************************************************** |
| 926 | *Function name |
| 927 | * timecmp : compare two time |
| 928 | *Input params |
| 929 | * t1 : first time |
| 930 | * t2 : second time |
| 931 | *Return value |
| 932 | * int : 0: t1 == t2; -1: t1 < t2; 1: t1 > t2 |
| 933 | ****************************************************************************/ |
| 934 | |
| 935 | int timecmp(ltt_time * t1, ltt_time * t2) |
| 936 | { |
| 937 | ltt_time T; |
| 938 | TimeSub(T, *t1, *t2); |
| 939 | if(T.tv_sec == 0 && T.tv_nsec == 0) return 0; |
| 940 | else if(T.tv_sec > 0 || (T.tv_sec==0 && T.tv_nsec > 0)) return 1; |
| 941 | else return -1; |
| 942 | } |
| 943 | |
| 944 | /***************************************************************************** |
| 945 | *Function name |
| 946 | * getIntNumber : get an integer number |
| 947 | *Input params |
| 948 | * size : the size of the integer |
| 949 | * evD : the event data |
| 950 | *Return value |
| 951 | * int : an integer |
| 952 | ****************************************************************************/ |
| 953 | |
| 954 | int getIntNumber(int size, void *evD) |
| 955 | { |
| 956 | int64_t i; |
| 957 | if(size == 1) i = *(int8_t *)evD; |
| 958 | else if(size == 2) i = *(int16_t *)evD; |
| 959 | else if(size == 4) i = *(int32_t *)evD; |
| 960 | else if(size == 8) i = *(int64_t *)evD; |
| 961 | |
| 962 | return (int) i; |
| 963 | } |
| 964 | |
| 965 | /***************************************************************************** |
| 966 | *Function name |
| 967 | * getDataEndianType : get the data type size and endian type of the local |
| 968 | * machine |
| 969 | *Input params |
| 970 | * size : size of data type |
| 971 | * endian : endian type, little or big |
| 972 | ****************************************************************************/ |
| 973 | |
| 974 | void getDataEndianType(ltt_arch_size * size, ltt_arch_endian * endian) |
| 975 | { |
| 976 | int i = 1; |
| 977 | char c = (char) i; |
| 978 | int sizeInt=sizeof(int), sizeLong=sizeof(long), sizePointer=sizeof(void *); |
| 979 | |
| 980 | if(c == 1) *endian = LTT_LITTLE_ENDIAN; |
| 981 | else *endian = LTT_BIG_ENDIAN; |
| 982 | |
| 983 | if(sizeInt == 2 && sizeLong == 4 && sizePointer == 4) |
| 984 | *size = LTT_LP32; |
| 985 | else if(sizeInt == 4 && sizeLong == 4 && sizePointer == 4) |
| 986 | *size = LTT_ILP32; |
| 987 | else if(sizeInt == 4 && sizeLong == 8 && sizePointer == 8) |
| 988 | *size = LTT_LP64; |
| 989 | else if(sizeInt == 8 && sizeLong == 8 && sizePointer == 8) |
| 990 | *size = LTT_ILP64; |
| 991 | else *size = LTT_UNKNOWN; |
| 992 | } |
| 993 | |