| 1 | /* This file is part of the Linux Trace Toolkit viewer |
| 2 | * Copyright (C) 2003-2004 Xiangxiu Yang |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License Version 2 as |
| 6 | * published by the Free Software Foundation; |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program; if not, write to the Free Software |
| 15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| 16 | * MA 02111-1307, USA. |
| 17 | */ |
| 18 | |
| 19 | #include <stdio.h> |
| 20 | #include <fcntl.h> |
| 21 | #include <string.h> |
| 22 | #include <dirent.h> |
| 23 | #include <sys/stat.h> |
| 24 | #include <sys/types.h> |
| 25 | #include <errno.h> |
| 26 | #include <unistd.h> |
| 27 | |
| 28 | // For realpath |
| 29 | #include <limits.h> |
| 30 | #include <stdlib.h> |
| 31 | |
| 32 | |
| 33 | #include "parser.h" |
| 34 | #include <ltt/ltt.h> |
| 35 | #include "ltt-private.h" |
| 36 | #include <ltt/trace.h> |
| 37 | #include <ltt/facility.h> |
| 38 | #include <ltt/event.h> |
| 39 | #include <ltt/type.h> |
| 40 | |
| 41 | #define DIR_NAME_SIZE 256 |
| 42 | #define __UNUSED__ __attribute__((__unused__)) |
| 43 | |
| 44 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
| 45 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
| 46 | |
| 47 | |
| 48 | /* obtain the time of an event */ |
| 49 | |
| 50 | static inline LttTime getEventTime(LttTracefile * tf); |
| 51 | |
| 52 | |
| 53 | /* set the offset of the fields belonging to the event, |
| 54 | need the information of the archecture */ |
| 55 | void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace *t); |
| 56 | |
| 57 | /* get the size of the field type according to the archtecture's |
| 58 | size and endian type(info of the archecture) */ |
| 59 | int getFieldtypeSize(LttTracefile * tf, LttEventType * evT, int offsetRoot, |
| 60 | int offsetParent, LttField *fld, void *evD, LttTrace* t); |
| 61 | |
| 62 | /* read a fixed size or a block information from the file (fd) */ |
| 63 | int readFile(int fd, void * buf, size_t size, char * mesg); |
| 64 | int readBlock(LttTracefile * tf, int whichBlock); |
| 65 | |
| 66 | /* calculate cycles per nsec for current block */ |
| 67 | void getCyclePerNsec(LttTracefile * t); |
| 68 | |
| 69 | /* reinitialize the info of the block which is already in the buffer */ |
| 70 | void updateTracefile(LttTracefile * tf); |
| 71 | |
| 72 | /* go to the next event */ |
| 73 | int skipEvent(LttTracefile * t); |
| 74 | |
| 75 | |
| 76 | /* Functions to parse system.xml file (using glib xml parser) */ |
| 77 | static void parser_start_element (GMarkupParseContext __UNUSED__ *context, |
| 78 | const gchar *element_name, |
| 79 | const gchar **attribute_names, |
| 80 | const gchar **attribute_values, |
| 81 | gpointer user_data, |
| 82 | GError **error) |
| 83 | { |
| 84 | int i=0; |
| 85 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
| 86 | if(strcmp("system", element_name)){ |
| 87 | *error = g_error_new(G_MARKUP_ERROR, |
| 88 | G_LOG_LEVEL_WARNING, |
| 89 | "This is not system.xml file"); |
| 90 | return; |
| 91 | } |
| 92 | |
| 93 | while(attribute_names[i]){ |
| 94 | if(strcmp("node_name", attribute_names[i])==0){ |
| 95 | des->node_name = g_strdup(attribute_values[i]); |
| 96 | }else if(strcmp("domainname", attribute_names[i])==0){ |
| 97 | des->domain_name = g_strdup(attribute_values[i]); |
| 98 | }else if(strcmp("cpu", attribute_names[i])==0){ |
| 99 | des->nb_cpu = atoi(attribute_values[i]); |
| 100 | }else if(strcmp("arch_size", attribute_names[i])==0){ |
| 101 | if(strcmp(attribute_values[i],"LP32") == 0) des->size = LTT_LP32; |
| 102 | else if(strcmp(attribute_values[i],"ILP32") == 0) des->size = LTT_ILP32; |
| 103 | else if(strcmp(attribute_values[i],"LP64") == 0) des->size = LTT_LP64; |
| 104 | else if(strcmp(attribute_values[i],"ILP64") == 0) des->size = LTT_ILP64; |
| 105 | else if(strcmp(attribute_values[i],"UNKNOWN") == 0) des->size = LTT_UNKNOWN; |
| 106 | }else if(strcmp("endian", attribute_names[i])==0){ |
| 107 | if(strcmp(attribute_values[i],"LITTLE_ENDIAN") == 0) |
| 108 | des->endian = LTT_LITTLE_ENDIAN; |
| 109 | else if(strcmp(attribute_values[i],"BIG_ENDIAN") == 0) |
| 110 | des->endian = LTT_BIG_ENDIAN; |
| 111 | }else if(strcmp("kernel_name", attribute_names[i])==0){ |
| 112 | des->kernel_name = g_strdup(attribute_values[i]); |
| 113 | }else if(strcmp("kernel_release", attribute_names[i])==0){ |
| 114 | des->kernel_release = g_strdup(attribute_values[i]); |
| 115 | }else if(strcmp("kernel_version", attribute_names[i])==0){ |
| 116 | des->kernel_version = g_strdup(attribute_values[i]); |
| 117 | }else if(strcmp("machine", attribute_names[i])==0){ |
| 118 | des->machine = g_strdup(attribute_values[i]); |
| 119 | }else if(strcmp("processor", attribute_names[i])==0){ |
| 120 | des->processor = g_strdup(attribute_values[i]); |
| 121 | }else if(strcmp("hardware_platform", attribute_names[i])==0){ |
| 122 | des->hardware_platform = g_strdup(attribute_values[i]); |
| 123 | }else if(strcmp("operating_system", attribute_names[i])==0){ |
| 124 | des->operating_system = g_strdup(attribute_values[i]); |
| 125 | }else if(strcmp("ltt_major_version", attribute_names[i])==0){ |
| 126 | des->ltt_major_version = atoi(attribute_values[i]); |
| 127 | }else if(strcmp("ltt_minor_version", attribute_names[i])==0){ |
| 128 | des->ltt_minor_version = atoi(attribute_values[i]); |
| 129 | }else if(strcmp("ltt_block_size", attribute_names[i])==0){ |
| 130 | des->ltt_block_size = atoi(attribute_values[i]); |
| 131 | }else{ |
| 132 | *error = g_error_new(G_MARKUP_ERROR, |
| 133 | G_LOG_LEVEL_WARNING, |
| 134 | "Not a valid attribute"); |
| 135 | return; |
| 136 | } |
| 137 | i++; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | static void parser_characters (GMarkupParseContext __UNUSED__ *context, |
| 142 | const gchar *text, |
| 143 | gsize __UNUSED__ text_len, |
| 144 | gpointer user_data, |
| 145 | GError __UNUSED__ **error) |
| 146 | { |
| 147 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
| 148 | des->description = g_strdup(text); |
| 149 | } |
| 150 | |
| 151 | |
| 152 | /***************************************************************************** |
| 153 | *Function name |
| 154 | * ltt_tracefile_open : open a trace file, construct a LttTracefile |
| 155 | *Input params |
| 156 | * t : the trace containing the tracefile |
| 157 | * fileName : path name of the trace file |
| 158 | *Return value |
| 159 | * : a pointer to a tracefile |
| 160 | ****************************************************************************/ |
| 161 | |
| 162 | LttTracefile* ltt_tracefile_open(LttTrace * t, char * fileName) |
| 163 | { |
| 164 | LttTracefile * tf; |
| 165 | struct stat lTDFStat; /* Trace data file status */ |
| 166 | |
| 167 | tf = g_new(LttTracefile, 1); |
| 168 | |
| 169 | //open the file |
| 170 | tf->name = g_strdup(fileName); |
| 171 | tf->trace = t; |
| 172 | tf->fd = open(fileName, O_RDONLY, 0); |
| 173 | if(tf->fd < 0){ |
| 174 | g_warning("Unable to open input data file %s\n", fileName); |
| 175 | g_free(tf->name); |
| 176 | g_free(tf); |
| 177 | return NULL; |
| 178 | } |
| 179 | |
| 180 | // Get the file's status |
| 181 | if(fstat(tf->fd, &lTDFStat) < 0){ |
| 182 | g_warning("Unable to get the status of the input data file %s\n", fileName); |
| 183 | g_free(tf->name); |
| 184 | close(tf->fd); |
| 185 | g_free(tf); |
| 186 | return NULL; |
| 187 | } |
| 188 | |
| 189 | // Is the file large enough to contain a trace |
| 190 | if(lTDFStat.st_size < (off_t)(sizeof(BlockStart) + EVENT_HEADER_SIZE)){ |
| 191 | g_print("The input data file %s does not contain a trace\n", fileName); |
| 192 | g_free(tf->name); |
| 193 | close(tf->fd); |
| 194 | g_free(tf); |
| 195 | return NULL; |
| 196 | } |
| 197 | |
| 198 | //store the size of the file |
| 199 | tf->file_size = lTDFStat.st_size; |
| 200 | tf->block_size = t->system_description->ltt_block_size; |
| 201 | tf->block_number = tf->file_size / tf->block_size; |
| 202 | tf->which_block = 0; |
| 203 | |
| 204 | //allocate memory to contain the info of a block |
| 205 | tf->buffer = (void *) g_new(char, t->system_description->ltt_block_size); |
| 206 | |
| 207 | //read the first block |
| 208 | if(readBlock(tf,1)) exit(1); |
| 209 | |
| 210 | return tf; |
| 211 | } |
| 212 | |
| 213 | |
| 214 | /***************************************************************************** |
| 215 | *Open control and per cpu tracefiles |
| 216 | ****************************************************************************/ |
| 217 | |
| 218 | void ltt_tracefile_open_cpu(LttTrace *t, char * tracefile_name) |
| 219 | { |
| 220 | LttTracefile * tf; |
| 221 | tf = ltt_tracefile_open(t,tracefile_name); |
| 222 | if(!tf) return; |
| 223 | t->per_cpu_tracefile_number++; |
| 224 | g_ptr_array_add(t->per_cpu_tracefiles, tf); |
| 225 | } |
| 226 | |
| 227 | gint ltt_tracefile_open_control(LttTrace *t, char * control_name) |
| 228 | { |
| 229 | LttTracefile * tf; |
| 230 | LttEvent ev; |
| 231 | LttFacility * f; |
| 232 | void * pos; |
| 233 | FacilityLoad fLoad; |
| 234 | unsigned int i; |
| 235 | |
| 236 | tf = ltt_tracefile_open(t,control_name); |
| 237 | if(!tf) { |
| 238 | g_warning("ltt_tracefile_open_control : bad file descriptor"); |
| 239 | return -1; |
| 240 | } |
| 241 | t->control_tracefile_number++; |
| 242 | g_ptr_array_add(t->control_tracefiles,tf); |
| 243 | |
| 244 | //parse facilities tracefile to get base_id |
| 245 | if(strcmp(&control_name[strlen(control_name)-10],"facilities") ==0){ |
| 246 | while(1){ |
| 247 | if(!ltt_tracefile_read(tf,&ev)) return 0; // end of file |
| 248 | |
| 249 | if(ev.event_id == TRACE_FACILITY_LOAD){ |
| 250 | pos = ev.data; |
| 251 | fLoad.name = (char*)pos; |
| 252 | fLoad.checksum = *(LttChecksum*)(pos + strlen(fLoad.name)); |
| 253 | fLoad.base_code = *(guint32 *)(pos + strlen(fLoad.name) + sizeof(LttChecksum)); |
| 254 | |
| 255 | for(i=0;i<t->facility_number;i++){ |
| 256 | f = (LttFacility*)g_ptr_array_index(t->facilities,i); |
| 257 | if(strcmp(f->name,fLoad.name)==0 && fLoad.checksum==f->checksum){ |
| 258 | f->base_id = fLoad.base_code; |
| 259 | break; |
| 260 | } |
| 261 | } |
| 262 | if(i==t->facility_number) { |
| 263 | g_warning("Facility: %s, checksum: %u is not found", |
| 264 | fLoad.name,(unsigned int)fLoad.checksum); |
| 265 | return -1; |
| 266 | } |
| 267 | }else if(ev.event_id == TRACE_BLOCK_START){ |
| 268 | continue; |
| 269 | }else if(ev.event_id == TRACE_BLOCK_END){ |
| 270 | break; |
| 271 | }else { |
| 272 | g_warning("Not valid facilities trace file"); |
| 273 | return -1; |
| 274 | } |
| 275 | } |
| 276 | } |
| 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | /***************************************************************************** |
| 281 | *Function name |
| 282 | * ltt_tracefile_close: close a trace file, |
| 283 | *Input params |
| 284 | * t : tracefile which will be closed |
| 285 | ****************************************************************************/ |
| 286 | |
| 287 | void ltt_tracefile_close(LttTracefile *t) |
| 288 | { |
| 289 | g_free(t->name); |
| 290 | g_free(t->buffer); |
| 291 | close(t->fd); |
| 292 | g_free(t); |
| 293 | } |
| 294 | |
| 295 | |
| 296 | /***************************************************************************** |
| 297 | *Get system information |
| 298 | ****************************************************************************/ |
| 299 | gint getSystemInfo(LttSystemDescription* des, char * pathname) |
| 300 | { |
| 301 | FILE * fp; |
| 302 | char buf[DIR_NAME_SIZE]; |
| 303 | |
| 304 | GMarkupParseContext * context; |
| 305 | GError * error = NULL; |
| 306 | GMarkupParser markup_parser = |
| 307 | { |
| 308 | parser_start_element, |
| 309 | NULL, |
| 310 | parser_characters, |
| 311 | NULL, /* passthrough */ |
| 312 | NULL /* error */ |
| 313 | }; |
| 314 | |
| 315 | fp = fopen(pathname,"r"); |
| 316 | if(!fp){ |
| 317 | g_warning("Can not open file : %s\n", pathname); |
| 318 | return -1; |
| 319 | } |
| 320 | |
| 321 | context = g_markup_parse_context_new(&markup_parser, 0, des,NULL); |
| 322 | |
| 323 | while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){ |
| 324 | if(!g_markup_parse_context_parse(context, buf, DIR_NAME_SIZE, &error)){ |
| 325 | if(error != NULL) { |
| 326 | g_warning("Can not parse xml file: \n%s\n", error->message); |
| 327 | g_error_free(error); |
| 328 | } |
| 329 | g_markup_parse_context_free(context); |
| 330 | fclose(fp); |
| 331 | return -1; |
| 332 | } |
| 333 | } |
| 334 | g_markup_parse_context_free(context); |
| 335 | fclose(fp); |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | /***************************************************************************** |
| 340 | *The following functions get facility/tracefile information |
| 341 | ****************************************************************************/ |
| 342 | |
| 343 | gint getFacilityInfo(LttTrace *t, char* eventdefs) |
| 344 | { |
| 345 | DIR * dir; |
| 346 | struct dirent *entry; |
| 347 | char * ptr; |
| 348 | unsigned int i,j; |
| 349 | LttFacility * f; |
| 350 | LttEventType * et; |
| 351 | char name[DIR_NAME_SIZE]; |
| 352 | |
| 353 | dir = opendir(eventdefs); |
| 354 | if(!dir) { |
| 355 | g_warning("Can not open directory: %s\n", eventdefs); |
| 356 | return -1; |
| 357 | } |
| 358 | |
| 359 | while((entry = readdir(dir)) != NULL){ |
| 360 | ptr = &entry->d_name[strlen(entry->d_name)-4]; |
| 361 | if(strcmp(ptr,".xml") != 0) continue; |
| 362 | strcpy(name,eventdefs); |
| 363 | strcat(name,entry->d_name); |
| 364 | ltt_facility_open(t,name); |
| 365 | } |
| 366 | closedir(dir); |
| 367 | |
| 368 | for(j=0;j<t->facility_number;j++){ |
| 369 | f = (LttFacility*)g_ptr_array_index(t->facilities, j); |
| 370 | for(i=0; i<f->event_number; i++){ |
| 371 | et = f->events[i]; |
| 372 | setFieldsOffset(NULL, et, NULL, t); |
| 373 | } |
| 374 | } |
| 375 | return 0; |
| 376 | } |
| 377 | |
| 378 | gint getControlFileInfo(LttTrace *t, char* control) |
| 379 | { |
| 380 | DIR * dir; |
| 381 | struct dirent *entry; |
| 382 | char name[DIR_NAME_SIZE]; |
| 383 | |
| 384 | dir = opendir(control); |
| 385 | if(!dir) { |
| 386 | g_warning("Can not open directory: %s\n", control); |
| 387 | return -1; |
| 388 | } |
| 389 | |
| 390 | while((entry = readdir(dir)) != NULL){ |
| 391 | if(strcmp(entry->d_name,"facilities") != 0 && |
| 392 | strcmp(entry->d_name,"interrupts") != 0 && |
| 393 | strcmp(entry->d_name,"processes") != 0) continue; |
| 394 | |
| 395 | strcpy(name,control); |
| 396 | strcat(name,entry->d_name); |
| 397 | if(ltt_tracefile_open_control(t,name)) |
| 398 | return -1; |
| 399 | } |
| 400 | closedir(dir); |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | gint getCpuFileInfo(LttTrace *t, char* cpu) |
| 405 | { |
| 406 | DIR * dir; |
| 407 | struct dirent *entry; |
| 408 | char name[DIR_NAME_SIZE]; |
| 409 | |
| 410 | dir = opendir(cpu); |
| 411 | if(!dir) { |
| 412 | g_warning("Can not open directory: %s\n", cpu); |
| 413 | return -1; |
| 414 | } |
| 415 | |
| 416 | while((entry = readdir(dir)) != NULL){ |
| 417 | if(strcmp(entry->d_name,".") != 0 && |
| 418 | strcmp(entry->d_name,"..") != 0 && |
| 419 | strcmp(entry->d_name,".svn") != 0){ |
| 420 | strcpy(name,cpu); |
| 421 | strcat(name,entry->d_name); |
| 422 | ltt_tracefile_open_cpu(t,name); |
| 423 | }else continue; |
| 424 | } |
| 425 | closedir(dir); |
| 426 | return 0; |
| 427 | } |
| 428 | |
| 429 | /***************************************************************************** |
| 430 | *A trace is specified as a pathname to the directory containing all the |
| 431 | *associated data (control tracefiles, per cpu tracefiles, event |
| 432 | *descriptions...). |
| 433 | * |
| 434 | *When a trace is closed, all the associated facilities, types and fields |
| 435 | *are released as well. |
| 436 | */ |
| 437 | |
| 438 | |
| 439 | /**************************************************************************** |
| 440 | * get_absolute_pathname |
| 441 | * |
| 442 | * return the unique pathname in the system |
| 443 | * |
| 444 | * MD : Fixed this function so it uses realpath, dealing well with |
| 445 | * forgotten cases (.. were not used correctly before). |
| 446 | * |
| 447 | ****************************************************************************/ |
| 448 | void get_absolute_pathname(const char *pathname, char * abs_pathname) |
| 449 | { |
| 450 | abs_pathname[0] = '\0'; |
| 451 | |
| 452 | if ( realpath (pathname, abs_pathname) != NULL) |
| 453 | return; |
| 454 | else |
| 455 | { |
| 456 | /* error, return the original path unmodified */ |
| 457 | strcpy(abs_pathname, pathname); |
| 458 | return; |
| 459 | } |
| 460 | return; |
| 461 | } |
| 462 | |
| 463 | LttTrace *ltt_trace_open(const char *pathname) |
| 464 | { |
| 465 | LttTrace * t; |
| 466 | LttSystemDescription * sys_description; |
| 467 | char eventdefs[DIR_NAME_SIZE]; |
| 468 | char info[DIR_NAME_SIZE]; |
| 469 | char control[DIR_NAME_SIZE]; |
| 470 | char cpu[DIR_NAME_SIZE]; |
| 471 | char tmp[DIR_NAME_SIZE]; |
| 472 | char abs_path[DIR_NAME_SIZE]; |
| 473 | gboolean has_slash = FALSE; |
| 474 | |
| 475 | get_absolute_pathname(pathname, abs_path); |
| 476 | //establish the pathname to different directories |
| 477 | if(abs_path[strlen(abs_path)-1] == '/')has_slash = TRUE; |
| 478 | strcpy(eventdefs,abs_path); |
| 479 | if(!has_slash)strcat(eventdefs,"/"); |
| 480 | strcat(eventdefs,"eventdefs/"); |
| 481 | |
| 482 | strcpy(info,abs_path); |
| 483 | if(!has_slash)strcat(info,"/"); |
| 484 | strcat(info,"info/"); |
| 485 | |
| 486 | strcpy(control,abs_path); |
| 487 | if(!has_slash)strcat(control,"/"); |
| 488 | strcat(control,"control/"); |
| 489 | |
| 490 | strcpy(cpu,abs_path); |
| 491 | if(!has_slash)strcat(cpu,"/"); |
| 492 | strcat(cpu,"cpu/"); |
| 493 | |
| 494 | //new trace |
| 495 | sys_description = g_new(LttSystemDescription, 1); |
| 496 | t = g_new(LttTrace, 1); |
| 497 | t->pathname = g_strdup(abs_path); |
| 498 | t->facility_number = 0; |
| 499 | t->control_tracefile_number = 0; |
| 500 | t->per_cpu_tracefile_number = 0; |
| 501 | t->system_description = sys_description; |
| 502 | t->control_tracefiles = g_ptr_array_new(); |
| 503 | t->per_cpu_tracefiles = g_ptr_array_new(); |
| 504 | t->facilities = g_ptr_array_new(); |
| 505 | getDataEndianType(&(t->my_arch_size), &(t->my_arch_endian)); |
| 506 | |
| 507 | //get system description |
| 508 | strcpy(tmp,info); |
| 509 | strcat(tmp,"system.xml"); |
| 510 | if(getSystemInfo(sys_description, tmp)) { |
| 511 | g_ptr_array_free(t->facilities, TRUE); |
| 512 | g_ptr_array_free(t->per_cpu_tracefiles, TRUE); |
| 513 | g_ptr_array_free(t->control_tracefiles, TRUE); |
| 514 | g_free(sys_description); |
| 515 | g_free(t->pathname); |
| 516 | g_free(t); |
| 517 | return NULL; |
| 518 | } |
| 519 | |
| 520 | |
| 521 | |
| 522 | //get facilities info |
| 523 | if(getFacilityInfo(t,eventdefs)) { |
| 524 | g_ptr_array_free(t->facilities, TRUE); |
| 525 | g_ptr_array_free(t->per_cpu_tracefiles, TRUE); |
| 526 | g_ptr_array_free(t->control_tracefiles, TRUE); |
| 527 | g_free(sys_description); |
| 528 | g_free(t->pathname); |
| 529 | g_free(t); |
| 530 | return NULL; |
| 531 | } |
| 532 | |
| 533 | //get control tracefile info |
| 534 | getControlFileInfo(t,control); |
| 535 | /* |
| 536 | if(getControlFileInfo(t,control)) { |
| 537 | g_ptr_array_free(t->facilities, TRUE); |
| 538 | g_ptr_array_free(t->per_cpu_tracefiles, TRUE); |
| 539 | g_ptr_array_free(t->control_tracefiles, TRUE); |
| 540 | g_free(sys_description); |
| 541 | g_free(t->pathname); |
| 542 | g_free(t); |
| 543 | return NULL; |
| 544 | }*/ // With fatal error |
| 545 | |
| 546 | //get cpu tracefile info |
| 547 | if(getCpuFileInfo(t,cpu)) { |
| 548 | g_ptr_array_free(t->facilities, TRUE); |
| 549 | g_ptr_array_free(t->per_cpu_tracefiles, TRUE); |
| 550 | g_ptr_array_free(t->control_tracefiles, TRUE); |
| 551 | g_free(sys_description); |
| 552 | g_free(t->pathname); |
| 553 | g_free(t); |
| 554 | return NULL; |
| 555 | } |
| 556 | |
| 557 | return t; |
| 558 | } |
| 559 | |
| 560 | char * ltt_trace_name(LttTrace *t) |
| 561 | { |
| 562 | return t->pathname; |
| 563 | } |
| 564 | |
| 565 | |
| 566 | /****************************************************************************** |
| 567 | * When we copy a trace, we want all the opening actions to happen again : |
| 568 | * the trace will be reopened and totally independant from the original. |
| 569 | * That's why we call ltt_trace_open. |
| 570 | *****************************************************************************/ |
| 571 | LttTrace *ltt_trace_copy(LttTrace *self) |
| 572 | { |
| 573 | return ltt_trace_open(self->pathname); |
| 574 | } |
| 575 | |
| 576 | void ltt_trace_close(LttTrace *t) |
| 577 | { |
| 578 | unsigned int i; |
| 579 | LttTracefile * tf; |
| 580 | LttFacility * f; |
| 581 | |
| 582 | g_free(t->pathname); |
| 583 | |
| 584 | //free system_description |
| 585 | g_free(t->system_description->description); |
| 586 | g_free(t->system_description->node_name); |
| 587 | g_free(t->system_description->domain_name); |
| 588 | g_free(t->system_description->kernel_name); |
| 589 | g_free(t->system_description->kernel_release); |
| 590 | g_free(t->system_description->kernel_version); |
| 591 | g_free(t->system_description->machine); |
| 592 | g_free(t->system_description->processor); |
| 593 | g_free(t->system_description->hardware_platform); |
| 594 | g_free(t->system_description->operating_system); |
| 595 | g_free(t->system_description); |
| 596 | |
| 597 | //free control_tracefiles |
| 598 | for(i=0;i<t->control_tracefile_number;i++){ |
| 599 | tf = (LttTracefile*)g_ptr_array_index(t->control_tracefiles,i); |
| 600 | ltt_tracefile_close(tf); |
| 601 | } |
| 602 | g_ptr_array_free(t->control_tracefiles, TRUE); |
| 603 | |
| 604 | //free per_cpu_tracefiles |
| 605 | for(i=0;i<t->per_cpu_tracefile_number;i++){ |
| 606 | tf = (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles,i); |
| 607 | ltt_tracefile_close(tf); |
| 608 | } |
| 609 | g_ptr_array_free(t->per_cpu_tracefiles, TRUE); |
| 610 | |
| 611 | //free facilities |
| 612 | for(i=0;i<t->facility_number;i++){ |
| 613 | f = (LttFacility*)g_ptr_array_index(t->facilities,i); |
| 614 | ltt_facility_close(f); |
| 615 | } |
| 616 | g_ptr_array_free(t->facilities, TRUE); |
| 617 | |
| 618 | g_free(t); |
| 619 | |
| 620 | g_blow_chunks(); |
| 621 | } |
| 622 | |
| 623 | |
| 624 | /***************************************************************************** |
| 625 | *Get the system description of the trace |
| 626 | ****************************************************************************/ |
| 627 | |
| 628 | LttSystemDescription *ltt_trace_system_description(LttTrace *t) |
| 629 | { |
| 630 | return t->system_description; |
| 631 | } |
| 632 | |
| 633 | /***************************************************************************** |
| 634 | * The following functions discover the facilities of the trace |
| 635 | ****************************************************************************/ |
| 636 | |
| 637 | unsigned ltt_trace_facility_number(LttTrace *t) |
| 638 | { |
| 639 | return (unsigned)(t->facility_number); |
| 640 | } |
| 641 | |
| 642 | LttFacility *ltt_trace_facility_get(LttTrace *t, unsigned i) |
| 643 | { |
| 644 | return (LttFacility*)g_ptr_array_index(t->facilities, i); |
| 645 | } |
| 646 | |
| 647 | /***************************************************************************** |
| 648 | *Function name |
| 649 | * ltt_trace_facility_find : find facilities in the trace |
| 650 | *Input params |
| 651 | * t : the trace |
| 652 | * name : facility name |
| 653 | *Output params |
| 654 | * position : position of the facility in the trace |
| 655 | *Return value |
| 656 | * : the number of facilities |
| 657 | ****************************************************************************/ |
| 658 | |
| 659 | unsigned ltt_trace_facility_find(LttTrace *t, char *name, unsigned *position) |
| 660 | { |
| 661 | unsigned int i, count=0; |
| 662 | LttFacility * f; |
| 663 | for(i=0;i<t->facility_number;i++){ |
| 664 | f = (LttFacility*)g_ptr_array_index(t->facilities, i); |
| 665 | if(strcmp(f->name,name)==0){ |
| 666 | count++; |
| 667 | if(count==1) *position = i; |
| 668 | }else{ |
| 669 | if(count) break; |
| 670 | } |
| 671 | } |
| 672 | return count; |
| 673 | } |
| 674 | |
| 675 | /***************************************************************************** |
| 676 | * Functions to discover all the event types in the trace |
| 677 | ****************************************************************************/ |
| 678 | |
| 679 | unsigned ltt_trace_eventtype_number(LttTrace *t) |
| 680 | { |
| 681 | unsigned int i; |
| 682 | unsigned count = 0; |
| 683 | LttFacility * f; |
| 684 | for(i=0;i<t->facility_number;i++){ |
| 685 | f = (LttFacility*)g_ptr_array_index(t->facilities, i); |
| 686 | count += f->event_number; |
| 687 | } |
| 688 | return count; |
| 689 | } |
| 690 | |
| 691 | /* FIXME : performances could be improved with a better design for this |
| 692 | * function */ |
| 693 | LttFacility * ltt_trace_facility_by_id(LttTrace * trace, unsigned id) |
| 694 | { |
| 695 | LttFacility * facility = NULL; |
| 696 | unsigned int i; |
| 697 | |
| 698 | for(i=0;i<trace->facility_number;i++){ |
| 699 | LttFacility *iter_facility = |
| 700 | (LttFacility*) g_ptr_array_index(trace->facilities,i); |
| 701 | if(unlikely(id >= iter_facility->base_id && |
| 702 | id < iter_facility->base_id + iter_facility->event_number)) { |
| 703 | facility = iter_facility; |
| 704 | break; |
| 705 | } |
| 706 | } |
| 707 | |
| 708 | return facility; |
| 709 | } |
| 710 | |
| 711 | LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned evId) |
| 712 | { |
| 713 | LttFacility * f; |
| 714 | f = ltt_trace_facility_by_id(t,evId); |
| 715 | if(!f) return NULL; |
| 716 | return f->events[evId - f->base_id]; |
| 717 | } |
| 718 | |
| 719 | /***************************************************************************** |
| 720 | *There is one "per cpu" tracefile for each CPU, numbered from 0 to |
| 721 | *the maximum number of CPU in the system. When the number of CPU installed |
| 722 | *is less than the maximum, some positions are unused. There are also a |
| 723 | *number of "control" tracefiles (facilities, interrupts...). |
| 724 | ****************************************************************************/ |
| 725 | unsigned ltt_trace_control_tracefile_number(LttTrace *t) |
| 726 | { |
| 727 | return t->control_tracefile_number; |
| 728 | } |
| 729 | |
| 730 | unsigned ltt_trace_per_cpu_tracefile_number(LttTrace *t) |
| 731 | { |
| 732 | return t->per_cpu_tracefile_number; |
| 733 | } |
| 734 | |
| 735 | /***************************************************************************** |
| 736 | *It is possible to search for the tracefiles by name or by CPU position. |
| 737 | *The index within the tracefiles of the same type is returned if found |
| 738 | *and a negative value otherwise. |
| 739 | ****************************************************************************/ |
| 740 | |
| 741 | int ltt_trace_control_tracefile_find(LttTrace *t, const gchar *name) |
| 742 | { |
| 743 | LttTracefile * tracefile; |
| 744 | unsigned int i; |
| 745 | for(i=0;i<t->control_tracefile_number;i++){ |
| 746 | tracefile = (LttTracefile*)g_ptr_array_index(t->control_tracefiles, i); |
| 747 | if(strcmp(tracefile->name, name)==0)break; |
| 748 | } |
| 749 | if(i == t->control_tracefile_number) return -1; |
| 750 | return i; |
| 751 | } |
| 752 | |
| 753 | /* not really useful. We just have to know that cpu tracefiles |
| 754 | * comes before control tracefiles. |
| 755 | */ |
| 756 | int ltt_trace_per_cpu_tracefile_find(LttTrace *t, const gchar *name) |
| 757 | { |
| 758 | LttTracefile * tracefile; |
| 759 | unsigned int i; |
| 760 | for(i=0;i<t->per_cpu_tracefile_number;i++){ |
| 761 | tracefile = (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles, i); |
| 762 | if(strcmp(tracefile->name, name)==0)break; |
| 763 | } |
| 764 | if(i == t->per_cpu_tracefile_number) return -1; |
| 765 | return i; |
| 766 | } |
| 767 | |
| 768 | /***************************************************************************** |
| 769 | *Get a specific tracefile |
| 770 | ****************************************************************************/ |
| 771 | |
| 772 | LttTracefile *ltt_trace_control_tracefile_get(LttTrace *t, unsigned i) |
| 773 | { |
| 774 | return (LttTracefile*)g_ptr_array_index(t->control_tracefiles, i); |
| 775 | } |
| 776 | |
| 777 | LttTracefile *ltt_trace_per_cpu_tracefile_get(LttTrace *t, unsigned i) |
| 778 | { |
| 779 | return (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles, i); |
| 780 | } |
| 781 | |
| 782 | /***************************************************************************** |
| 783 | * Get the start time and end time of the trace |
| 784 | ****************************************************************************/ |
| 785 | |
| 786 | void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end) |
| 787 | { |
| 788 | LttTime startSmall, startTmp, endBig, endTmp; |
| 789 | unsigned int i, j=0; |
| 790 | LttTracefile * tf; |
| 791 | |
| 792 | for(i=0;i<t->control_tracefile_number;i++){ |
| 793 | tf = g_ptr_array_index(t->control_tracefiles, i); |
| 794 | readBlock(tf,1); |
| 795 | startTmp = tf->a_block_start->time; |
| 796 | readBlock(tf,tf->block_number); |
| 797 | endTmp = tf->a_block_end->time; |
| 798 | if(i==0){ |
| 799 | startSmall = startTmp; |
| 800 | endBig = endTmp; |
| 801 | j = 1; |
| 802 | continue; |
| 803 | } |
| 804 | if(ltt_time_compare(startSmall,startTmp) > 0) startSmall = startTmp; |
| 805 | if(ltt_time_compare(endBig,endTmp) < 0) endBig = endTmp; |
| 806 | } |
| 807 | |
| 808 | for(i=0;i<t->per_cpu_tracefile_number;i++){ |
| 809 | tf = g_ptr_array_index(t->per_cpu_tracefiles, i); |
| 810 | readBlock(tf,1); |
| 811 | startTmp = tf->a_block_start->time; |
| 812 | readBlock(tf,tf->block_number); |
| 813 | endTmp = tf->a_block_end->time; |
| 814 | if(j == 0 && i==0){ |
| 815 | startSmall = startTmp; |
| 816 | endBig = endTmp; |
| 817 | continue; |
| 818 | } |
| 819 | if(ltt_time_compare(startSmall,startTmp) > 0) startSmall = startTmp; |
| 820 | if(ltt_time_compare(endBig,endTmp) < 0) endBig = endTmp; |
| 821 | } |
| 822 | |
| 823 | if(start != NULL) *start = startSmall; |
| 824 | if(end != NULL) *end = endBig; |
| 825 | } |
| 826 | |
| 827 | |
| 828 | /***************************************************************************** |
| 829 | *Get the name of a tracefile |
| 830 | ****************************************************************************/ |
| 831 | |
| 832 | char *ltt_tracefile_name(LttTracefile *tf) |
| 833 | { |
| 834 | return tf->name; |
| 835 | } |
| 836 | |
| 837 | /***************************************************************************** |
| 838 | * Get the number of blocks in the tracefile |
| 839 | ****************************************************************************/ |
| 840 | |
| 841 | unsigned ltt_tracefile_block_number(LttTracefile *tf) |
| 842 | { |
| 843 | return tf->block_number; |
| 844 | } |
| 845 | |
| 846 | /***************************************************************************** |
| 847 | *Function name |
| 848 | * ltt_tracefile_seek_time: seek to the first event of the trace with time |
| 849 | * larger or equal to time |
| 850 | *Input params |
| 851 | * t : tracefile |
| 852 | * time : criteria of the time |
| 853 | ****************************************************************************/ |
| 854 | void ltt_tracefile_find_time_block(LttTracefile *t, LttTime time, |
| 855 | int start_block, int end_block) |
| 856 | { |
| 857 | int err, tmp_block, s, e; |
| 858 | int headTime; |
| 859 | int tailTime; |
| 860 | |
| 861 | err=readBlock(t,start_block); |
| 862 | if(err) g_error("Can not read tracefile: %s\n", t->name); |
| 863 | if(start_block == end_block)return; |
| 864 | |
| 865 | tailTime = ltt_time_compare(t->a_block_end->time, time); |
| 866 | if(tailTime >= 0) return; |
| 867 | |
| 868 | err=readBlock(t,end_block); |
| 869 | if(err) g_error("Can not read tracefile: %s\n", t->name); |
| 870 | if(start_block+1 == end_block)return; |
| 871 | |
| 872 | headTime = ltt_time_compare(t->a_block_start->time, time); |
| 873 | if(headTime <= 0 ) return; |
| 874 | |
| 875 | tmp_block = (end_block + start_block)/2; |
| 876 | err=readBlock(t,tmp_block); |
| 877 | if(err) g_error("Can not read tracefile: %s\n", t->name); |
| 878 | |
| 879 | headTime = ltt_time_compare(t->a_block_start->time, time); |
| 880 | tailTime = ltt_time_compare(t->a_block_end->time, time); |
| 881 | if(headTime <= 0 && tailTime >= 0) return; |
| 882 | |
| 883 | if(headTime > 0){ |
| 884 | s = start_block + 1; |
| 885 | e = tmp_block - 1; |
| 886 | if(s <= e) |
| 887 | ltt_tracefile_find_time_block(t, time, s, e); |
| 888 | else return; |
| 889 | } |
| 890 | |
| 891 | if(tailTime < 0){ |
| 892 | s = tmp_block + 1; |
| 893 | e = end_block - 1; |
| 894 | if(s <= e) |
| 895 | ltt_tracefile_find_time_block(t, time, s, e); |
| 896 | else return; |
| 897 | } |
| 898 | } |
| 899 | |
| 900 | void ltt_tracefile_backward_find_time_block(LttTracefile *t, LttTime time) |
| 901 | { |
| 902 | int t_time, h_time, err; |
| 903 | err=readBlock(t,t->which_block-1); |
| 904 | if(err) g_error("Can not read tracefile: %s\n", t->name); |
| 905 | h_time = ltt_time_compare(t->a_block_start->time, time); |
| 906 | t_time = ltt_time_compare(t->a_block_end->time, time); |
| 907 | if(h_time == 0){ |
| 908 | int tmp; |
| 909 | if(t->which_block == 1) return; |
| 910 | err=readBlock(t,t->which_block-1); |
| 911 | if(err) g_error("Can not read tracefile: %s\n", t->name); |
| 912 | tmp = ltt_time_compare(t->a_block_end->time, time); |
| 913 | if(tmp == 0) return ltt_tracefile_seek_time(t, time); |
| 914 | err=readBlock(t,t->which_block+1); |
| 915 | if(err) g_error("Can not read tracefile: %s\n", t->name); |
| 916 | }else if(h_time > 0){ |
| 917 | ltt_tracefile_find_time_block(t, time, 1, t->which_block); |
| 918 | return ltt_tracefile_seek_time(t, time) ; |
| 919 | }else{ |
| 920 | if(t_time >= 0) return ltt_tracefile_seek_time(t, time); |
| 921 | err=readBlock(t,t->which_block+1); |
| 922 | if(err) g_error("Can not read tracefile: %s\n", t->name); |
| 923 | } |
| 924 | } |
| 925 | |
| 926 | void ltt_tracefile_seek_time(LttTracefile *t, LttTime time) |
| 927 | { |
| 928 | int err; |
| 929 | LttTime lttTime; |
| 930 | int headTime = ltt_time_compare(t->a_block_start->time, time); |
| 931 | int tailTime = ltt_time_compare(t->a_block_end->time, time); |
| 932 | LttEvent ev; |
| 933 | |
| 934 | if(headTime < 0 && tailTime > 0){ |
| 935 | if(ltt_time_compare(t->a_block_end->time, t->current_event_time) !=0) { |
| 936 | lttTime = getEventTime(t); |
| 937 | err = ltt_time_compare(lttTime, time); |
| 938 | if(err > 0){ |
| 939 | if(t->which_event==2 || ltt_time_compare(t->prev_event_time,time)<0){ |
| 940 | return; |
| 941 | }else{ |
| 942 | updateTracefile(t); |
| 943 | return ltt_tracefile_seek_time(t, time); |
| 944 | } |
| 945 | }else if(err < 0){ |
| 946 | while(1){ |
| 947 | if(ltt_tracefile_read(t,&ev) == NULL) { |
| 948 | g_print("End of file\n"); |
| 949 | return; |
| 950 | } |
| 951 | lttTime = getEventTime(t); |
| 952 | err = ltt_time_compare(lttTime, time); |
| 953 | if(err >= 0)return; |
| 954 | } |
| 955 | }else return; |
| 956 | }else{//we are at the end of the block |
| 957 | updateTracefile(t); |
| 958 | return ltt_tracefile_seek_time(t, time); |
| 959 | } |
| 960 | }else if(headTime >= 0){ |
| 961 | if(t->which_block == 1){ |
| 962 | updateTracefile(t); |
| 963 | }else{ |
| 964 | if(ltt_time_compare(t->prev_block_end_time, time) >= 0 || |
| 965 | (t->prev_block_end_time.tv_sec == 0 && |
| 966 | t->prev_block_end_time.tv_nsec == 0 )){ |
| 967 | ltt_tracefile_backward_find_time_block(t, time); |
| 968 | }else{ |
| 969 | updateTracefile(t); |
| 970 | } |
| 971 | } |
| 972 | }else if(tailTime < 0){ |
| 973 | if(t->which_block != t->block_number){ |
| 974 | ltt_tracefile_find_time_block(t, time, t->which_block+1, t->block_number); |
| 975 | return ltt_tracefile_seek_time(t, time); |
| 976 | }else { |
| 977 | t->cur_event_pos = t->buffer + t->block_size; |
| 978 | g_print("End of file\n"); |
| 979 | return; |
| 980 | } |
| 981 | }else if(tailTime == 0){ |
| 982 | t->cur_event_pos = t->last_event_pos; |
| 983 | t->current_event_time = time; |
| 984 | t->cur_heart_beat_number = 0; |
| 985 | t->prev_event_time.tv_sec = 0; |
| 986 | t->prev_event_time.tv_nsec = 0; |
| 987 | return; |
| 988 | } |
| 989 | } |
| 990 | |
| 991 | /***************************************************************************** |
| 992 | * Seek to the first event with position equal or larger to ep |
| 993 | * |
| 994 | * Modified by Mathieu Desnoyers to used faster offset position instead of |
| 995 | * re-reading the whole buffer. |
| 996 | ****************************************************************************/ |
| 997 | |
| 998 | void ltt_tracefile_seek_position(LttTracefile *t, const LttEventPosition *ep) |
| 999 | { |
| 1000 | //if we are at the right place, just return |
| 1001 | if(likely(t->which_block == ep->block_num && t->which_event == ep->event_num)) |
| 1002 | return; |
| 1003 | |
| 1004 | if(likely(t->which_block == ep->block_num)) updateTracefile(t); |
| 1005 | else readBlock(t,ep->block_num); |
| 1006 | //event offset is available |
| 1007 | if(likely(ep->old_position)){ |
| 1008 | int err; |
| 1009 | |
| 1010 | t->which_event = ep->event_num; |
| 1011 | t->cur_event_pos = t->buffer + ep->event_offset; |
| 1012 | t->prev_event_time = ep->event_time; |
| 1013 | t->current_event_time = ep->event_time; |
| 1014 | t->cur_heart_beat_number = ep->heart_beat_number; |
| 1015 | t->cur_cycle_count = ep->event_cycle_count; |
| 1016 | |
| 1017 | /* This is a workaround for fast position seek */ |
| 1018 | t->last_event_pos = ep->last_event_pos; |
| 1019 | t->prev_block_end_time = ep->prev_block_end_time; |
| 1020 | t->prev_event_time = ep->prev_event_time; |
| 1021 | t->pre_cycle_count = ep->pre_cycle_count; |
| 1022 | t->count = ep->count; |
| 1023 | t->overflow_nsec = ep->overflow_nsec; |
| 1024 | /* end of workaround */ |
| 1025 | |
| 1026 | //update the fields of the current event and go to the next event |
| 1027 | err = skipEvent(t); |
| 1028 | if(unlikely(err == ERANGE)) g_error("event id is out of range\n"); |
| 1029 | |
| 1030 | return; |
| 1031 | } |
| 1032 | |
| 1033 | //only block number and event index are available |
| 1034 | //MD: warning : this is slow! |
| 1035 | g_warning("using slow O(n) tracefile seek position"); |
| 1036 | |
| 1037 | LttEvent event; |
| 1038 | while(likely(t->which_event < ep->event_num)) ltt_tracefile_read(t, &event); |
| 1039 | |
| 1040 | return; |
| 1041 | } |
| 1042 | |
| 1043 | /***************************************************************************** |
| 1044 | *Function name |
| 1045 | * ltt_tracefile_read : read the current event, set the pointer to the next |
| 1046 | *Input params |
| 1047 | * t : tracefile |
| 1048 | *Return value |
| 1049 | * LttEvent * : an event to be processed |
| 1050 | ****************************************************************************/ |
| 1051 | |
| 1052 | LttEvent *ltt_tracefile_read(LttTracefile *t, LttEvent *event) |
| 1053 | { |
| 1054 | int err; |
| 1055 | |
| 1056 | if(unlikely(t->cur_event_pos == t->buffer + t->block_size)){ |
| 1057 | if(unlikely(t->which_block == t->block_number)){ |
| 1058 | return NULL; |
| 1059 | } |
| 1060 | err = readBlock(t, t->which_block + 1); |
| 1061 | if(unlikely(err))g_error("Can not read tracefile"); |
| 1062 | } |
| 1063 | |
| 1064 | event->event_id = (int)(*(guint16 *)(t->cur_event_pos)); |
| 1065 | if(unlikely(event->event_id == TRACE_TIME_HEARTBEAT)) |
| 1066 | t->cur_heart_beat_number++; |
| 1067 | |
| 1068 | t->prev_event_time = t->current_event_time; |
| 1069 | // t->current_event_time = getEventTime(t); |
| 1070 | |
| 1071 | event->time_delta = *(guint32 *)(t->cur_event_pos + EVENT_ID_SIZE); |
| 1072 | event->event_time = t->current_event_time; |
| 1073 | event->event_cycle_count = t->cur_cycle_count; |
| 1074 | |
| 1075 | event->tracefile = t; |
| 1076 | event->data = t->cur_event_pos + EVENT_HEADER_SIZE; |
| 1077 | event->which_block = t->which_block; |
| 1078 | event->which_event = t->which_event; |
| 1079 | |
| 1080 | /* This is a workaround for fast position seek */ |
| 1081 | event->last_event_pos = t->last_event_pos; |
| 1082 | event->prev_block_end_time = t->prev_block_end_time; |
| 1083 | event->prev_event_time = t->prev_event_time; |
| 1084 | event->pre_cycle_count = t->pre_cycle_count; |
| 1085 | event->count = t->count; |
| 1086 | event->overflow_nsec = t->overflow_nsec; |
| 1087 | |
| 1088 | /* end of workaround */ |
| 1089 | |
| 1090 | |
| 1091 | |
| 1092 | //update the fields of the current event and go to the next event |
| 1093 | err = skipEvent(t); |
| 1094 | if(unlikely(err == ERANGE)) g_error("event id is out of range\n"); |
| 1095 | |
| 1096 | return event; |
| 1097 | } |
| 1098 | |
| 1099 | /**************************************************************************** |
| 1100 | *Function name |
| 1101 | * readFile : wrap function to read from a file |
| 1102 | *Input Params |
| 1103 | * fd : file descriptor |
| 1104 | * buf : buf to contain the content |
| 1105 | * size : number of bytes to be read |
| 1106 | * mesg : message to be printed if some thing goes wrong |
| 1107 | *return value |
| 1108 | * 0 : success |
| 1109 | * EIO : can not read from the file |
| 1110 | ****************************************************************************/ |
| 1111 | |
| 1112 | int readFile(int fd, void * buf, size_t size, char * mesg) |
| 1113 | { |
| 1114 | ssize_t nbBytes = read(fd, buf, size); |
| 1115 | |
| 1116 | if((size_t)nbBytes != size) { |
| 1117 | if(nbBytes < 0) { |
| 1118 | perror("Error in readFile : "); |
| 1119 | } else { |
| 1120 | g_warning("%s",mesg); |
| 1121 | } |
| 1122 | return EIO; |
| 1123 | } |
| 1124 | return 0; |
| 1125 | } |
| 1126 | |
| 1127 | /***************************************************************************** |
| 1128 | *Function name |
| 1129 | * skipEvent_pre_read_cycles : go to the next event, |
| 1130 | * update the necessary fields of the current event |
| 1131 | * increment the cycle counter, save it at the end. |
| 1132 | *Input params |
| 1133 | * t : tracefile |
| 1134 | *return value |
| 1135 | * 0 : success |
| 1136 | * ERANGE : event id is out of range |
| 1137 | ****************************************************************************/ |
| 1138 | |
| 1139 | int skipEvent_pre_read_cycles(LttTracefile * t) |
| 1140 | { |
| 1141 | int evId; |
| 1142 | void * evData; |
| 1143 | LttEventType * evT; |
| 1144 | LttField * rootFld; |
| 1145 | |
| 1146 | evId = (int)(*(guint16 *)(t->cur_event_pos)); |
| 1147 | evData = t->cur_event_pos + EVENT_HEADER_SIZE; |
| 1148 | |
| 1149 | evT = ltt_trace_eventtype_get(t->trace,(unsigned)evId); |
| 1150 | |
| 1151 | if(likely(evT)) rootFld = evT->root_field; |
| 1152 | else return ERANGE; |
| 1153 | |
| 1154 | if(likely(rootFld)){ |
| 1155 | //event has string/sequence or the last event is not the same event |
| 1156 | if(likely((evT->latest_block!=t->which_block || evT->latest_event!=t->which_event) |
| 1157 | && rootFld->field_fixed == 0)){ |
| 1158 | setFieldsOffset(t, evT, evData, t->trace); |
| 1159 | } |
| 1160 | t->cur_event_pos += EVENT_HEADER_SIZE + rootFld->field_size; |
| 1161 | }else t->cur_event_pos += EVENT_HEADER_SIZE; |
| 1162 | |
| 1163 | //evT->latest_block = t->which_block; |
| 1164 | //evT->latest_event = t->which_event; |
| 1165 | |
| 1166 | //the next event is in the next block |
| 1167 | //if(unlikely(evId == TRACE_BLOCK_END)){ |
| 1168 | // Specify end of buffer reached. |
| 1169 | // t->cur_event_pos = t->buffer + t->block_size; |
| 1170 | //}else{ |
| 1171 | //g_critical("COUNT : %lu", t->cur_cycle_count); |
| 1172 | //t->which_event++; |
| 1173 | // t->current_event_time = getEventTime(t); |
| 1174 | //} |
| 1175 | |
| 1176 | return 0; |
| 1177 | } |
| 1178 | |
| 1179 | |
| 1180 | |
| 1181 | |
| 1182 | /***************************************************************************** |
| 1183 | *Function name |
| 1184 | * ltt_tracefile_pre_read_cycles : |
| 1185 | * read the current event, increment the cycle counter |
| 1186 | *Input params |
| 1187 | * t : tracefile |
| 1188 | *Return value |
| 1189 | * False : end of bloc reached |
| 1190 | ****************************************************************************/ |
| 1191 | |
| 1192 | gboolean ltt_tracefile_pre_read_cycles(LttTracefile *tf) |
| 1193 | { |
| 1194 | int err; |
| 1195 | //LttEvent event; |
| 1196 | |
| 1197 | // if(unlikely(t->cur_event_pos == t->buffer + t->block_size)){ |
| 1198 | //if(unlikely(t->which_block == t->block_number)){ |
| 1199 | // return FALSE; |
| 1200 | //} |
| 1201 | // return FALSE; // end of bloc reached |
| 1202 | //err = readBlock(t, t->which_block + 1); |
| 1203 | //if(unlikely(err))g_error("Can not read tracefile"); |
| 1204 | //} |
| 1205 | |
| 1206 | //event.event_id = (int)(*(guint16 *)(t->cur_event_pos)); |
| 1207 | //if(unlikely(event.event_id == TRACE_TIME_HEARTBEAT)) |
| 1208 | // t->cur_heart_beat_number++; |
| 1209 | |
| 1210 | //t->prev_event_time = t->current_event_time; |
| 1211 | // t->current_event_time = getEventTime(t); |
| 1212 | |
| 1213 | //event.time_delta = *(guint32 *)(t->cur_event_pos + EVENT_ID_SIZE); |
| 1214 | //event.event_time = t->current_event_time; |
| 1215 | //event.event_cycle_count = t->cur_cycle_count; |
| 1216 | |
| 1217 | //event.tracefile = t; |
| 1218 | //event.data = t->cur_event_pos + EVENT_HEADER_SIZE; |
| 1219 | //event.which_block = t->which_block; |
| 1220 | //event.which_event = t->which_event; |
| 1221 | |
| 1222 | /* This is a workaround for fast position seek */ |
| 1223 | //event.last_event_pos = t->last_event_pos; |
| 1224 | //event.prev_block_end_time = t->prev_block_end_time; |
| 1225 | //event.prev_event_time = t->prev_event_time; |
| 1226 | //event.pre_cycle_count = t->pre_cycle_count; |
| 1227 | //event.count = t->count; |
| 1228 | /* end of workaround */ |
| 1229 | |
| 1230 | |
| 1231 | /* Increment the cycle counter for the bloc */ |
| 1232 | LttTime time; |
| 1233 | LttCycleCount cycle_count; // cycle count for the current event |
| 1234 | LttCycleCount lEventTotalCycle; // Total cycles from start for event |
| 1235 | LttCycleCount lEventNSec; // Total nsecs from start for event |
| 1236 | LttTime lTimeOffset; // Time offset in struct LttTime |
| 1237 | guint16 evId; |
| 1238 | |
| 1239 | evId = *(guint16 *)tf->cur_event_pos; |
| 1240 | |
| 1241 | // Calculate total time in cycles from start of buffer for this event |
| 1242 | cycle_count = (LttCycleCount)*(guint32 *)(tf->cur_event_pos + EVENT_ID_SIZE); |
| 1243 | //g_debug("event cycle count %llu", cycle_count); |
| 1244 | // |
| 1245 | //gint64 delta_count = (gint64)(cycle_count - tf->pre_cycle_count); |
| 1246 | //LttCycleCount res_delta_count; |
| 1247 | gboolean comp_count = cycle_count < tf->pre_cycle_count; |
| 1248 | tf->pre_cycle_count = cycle_count; |
| 1249 | |
| 1250 | if(unlikely(comp_count)) { |
| 1251 | /* Wrapped */ |
| 1252 | tf->count++; //increment wrap count |
| 1253 | } |
| 1254 | |
| 1255 | //if(unlikely(cycle_count < tf->pre_cycle_count)) tf->count++; |
| 1256 | //if(unlikely(delta_count < 0)) { |
| 1257 | // tf->count++; //increment wrap count |
| 1258 | // keep in mind that delta_count is negative here. |
| 1259 | // res_delta_count = delta_count + 0x100000000ULL ; |
| 1260 | //} else |
| 1261 | // res_delta_count = (LttCycleCount)delta_count; |
| 1262 | |
| 1263 | //cycle_count += (LttCycleCount)tf->count << 32; |
| 1264 | |
| 1265 | //FIXME (MD) |
| 1266 | // if(tf->cur_heart_beat_number > tf->count) |
| 1267 | // cycle_count += (tf->cur_heart_beat_number - tf->count) << 32; |
| 1268 | |
| 1269 | //tf->cur_cycle_count = tf->cur_cycle_count + res_delta_count; |
| 1270 | tf->cur_cycle_count = cycle_count | ((LttCycleCount)tf->count << 32); |
| 1271 | //g_debug("cur cycle count %llu", tf->cur_cycle_count); |
| 1272 | |
| 1273 | |
| 1274 | |
| 1275 | |
| 1276 | if(unlikely(evId == TRACE_BLOCK_START)){ |
| 1277 | //g_debug("BLOCK START"); |
| 1278 | }else if(unlikely(evId == TRACE_BLOCK_END)){ |
| 1279 | //g_debug("BLOCK END"); |
| 1280 | |
| 1281 | /* The goal of all this pre reading */ |
| 1282 | tf->a_block_end->cycle_count = tf->cur_cycle_count; |
| 1283 | //g_debug("end of block cycle count : %llu", tf->cur_cycle_count); |
| 1284 | |
| 1285 | return FALSE; |
| 1286 | } |
| 1287 | |
| 1288 | //update the fields of the current event and go to the next event |
| 1289 | err = skipEvent_pre_read_cycles(tf); |
| 1290 | if(unlikely(err == ERANGE)) g_error("event id is out of range\n"); |
| 1291 | |
| 1292 | |
| 1293 | return TRUE; |
| 1294 | } |
| 1295 | |
| 1296 | /**************************************************************************** |
| 1297 | *Function name |
| 1298 | * readBlock : read a block from the file |
| 1299 | *Input Params |
| 1300 | * lttdes : ltt trace file |
| 1301 | * whichBlock : the block which will be read |
| 1302 | *return value |
| 1303 | * 0 : success |
| 1304 | * EINVAL : lseek fail |
| 1305 | * EIO : can not read from the file |
| 1306 | ****************************************************************************/ |
| 1307 | |
| 1308 | int readBlock(LttTracefile * tf, int whichBlock) |
| 1309 | { |
| 1310 | off_t nbBytes; |
| 1311 | guint32 lostSize; |
| 1312 | |
| 1313 | /* same block already opened requested */ |
| 1314 | if((guint)whichBlock == tf->which_block) return 0; |
| 1315 | |
| 1316 | if(likely(whichBlock - tf->which_block == 1 && tf->which_block != 0)){ |
| 1317 | tf->prev_block_end_time = tf->a_block_end->time; |
| 1318 | tf->prev_event_time = tf->a_block_end->time; |
| 1319 | }else{ |
| 1320 | tf->prev_block_end_time.tv_sec = 0; |
| 1321 | tf->prev_block_end_time.tv_nsec = 0; |
| 1322 | tf->prev_event_time.tv_sec = 0; |
| 1323 | tf->prev_event_time.tv_nsec = 0; |
| 1324 | } |
| 1325 | |
| 1326 | nbBytes=lseek(tf->fd,(off_t)((whichBlock-1)*tf->block_size), SEEK_SET); |
| 1327 | if(unlikely(nbBytes == -1)) return EINVAL; |
| 1328 | |
| 1329 | if(unlikely(readFile(tf->fd,tf->buffer,tf->block_size,"Unable to read a block"))) |
| 1330 | return EIO; |
| 1331 | |
| 1332 | tf->a_block_start=(BlockStart *) (tf->buffer + EVENT_HEADER_SIZE); |
| 1333 | lostSize = *(guint32 *)(tf->buffer + tf->block_size - sizeof(guint32)); |
| 1334 | tf->a_block_end=(BlockEnd *)(tf->buffer + tf->block_size - |
| 1335 | lostSize + EVENT_HEADER_SIZE); |
| 1336 | tf->last_event_pos = tf->buffer + tf->block_size - lostSize; |
| 1337 | |
| 1338 | tf->which_block = whichBlock; |
| 1339 | tf->which_event = 1; |
| 1340 | tf->cur_event_pos = tf->buffer;//the beginning of the block, block start ev |
| 1341 | tf->cur_heart_beat_number = 0; |
| 1342 | |
| 1343 | /* read the whole block to precalculate total of cycles in it */ |
| 1344 | tf->count = 0; |
| 1345 | tf->pre_cycle_count = 0; |
| 1346 | tf->cur_cycle_count = 0; |
| 1347 | //g_debug("precalculating cycles begin for block %i", whichBlock); |
| 1348 | while(likely(ltt_tracefile_pre_read_cycles(tf))); |
| 1349 | /* Rough approximation of cycles per usec to calculate |
| 1350 | * the real block start and end time. |
| 1351 | */ |
| 1352 | getCyclePerNsec(tf); |
| 1353 | /* we are at end position, make end time more precise */ |
| 1354 | /* Start overflow_nsec to a negative value : takes account of the |
| 1355 | * start of block cycle counter */ |
| 1356 | tf->overflow_nsec = (-((double)tf->a_block_start->cycle_count) |
| 1357 | * tf->nsec_per_cycle); |
| 1358 | /* put back the numbers corresponding to end time */ |
| 1359 | tf->overflow_nsec += tf->one_overflow_nsec * tf->count; |
| 1360 | |
| 1361 | tf->a_block_end->time = getEventTime(tf); |
| 1362 | |
| 1363 | //g_debug("precalculating cycles end for block %i", whichBlock); |
| 1364 | |
| 1365 | /* put back pointer at the beginning */ |
| 1366 | tf->count = 0; |
| 1367 | tf->pre_cycle_count = 0; |
| 1368 | tf->cur_cycle_count = 0; |
| 1369 | tf->which_event = 1; |
| 1370 | tf->cur_event_pos = tf->buffer;//the beginning of the block, block start ev |
| 1371 | tf->cur_heart_beat_number = 0; |
| 1372 | |
| 1373 | /* Make start time more precise */ |
| 1374 | /* Start overflow_nsec to a negative value : takes account of the |
| 1375 | * start of block cycle counter */ |
| 1376 | tf->overflow_nsec = (-((double)tf->a_block_start->cycle_count) |
| 1377 | * tf->nsec_per_cycle); |
| 1378 | |
| 1379 | |
| 1380 | tf->a_block_start->time = getEventTime(tf); |
| 1381 | |
| 1382 | /* recalculate the cycles per nsec, with now more precise start and end time |
| 1383 | */ |
| 1384 | getCyclePerNsec(tf); |
| 1385 | tf->overflow_nsec = (-((double)tf->a_block_start->cycle_count) |
| 1386 | * tf->nsec_per_cycle); |
| 1387 | |
| 1388 | |
| 1389 | |
| 1390 | tf->current_event_time = getEventTime(tf); |
| 1391 | |
| 1392 | return 0; |
| 1393 | } |
| 1394 | |
| 1395 | /***************************************************************************** |
| 1396 | *Function name |
| 1397 | * updateTracefile : reinitialize the info of the block which is already |
| 1398 | * in the buffer |
| 1399 | *Input params |
| 1400 | * tf : tracefile |
| 1401 | ****************************************************************************/ |
| 1402 | |
| 1403 | void updateTracefile(LttTracefile * tf) |
| 1404 | { |
| 1405 | tf->which_event = 1; |
| 1406 | tf->cur_event_pos = tf->buffer; |
| 1407 | tf->current_event_time = getEventTime(tf); |
| 1408 | tf->cur_heart_beat_number = 0; |
| 1409 | |
| 1410 | tf->prev_event_time.tv_sec = 0; |
| 1411 | tf->prev_event_time.tv_nsec = 0; |
| 1412 | tf->count = 0; |
| 1413 | |
| 1414 | tf->overflow_nsec = (-((double)tf->a_block_start->cycle_count) |
| 1415 | * tf->nsec_per_cycle); |
| 1416 | |
| 1417 | } |
| 1418 | |
| 1419 | /***************************************************************************** |
| 1420 | *Function name |
| 1421 | * skipEvent : go to the next event, update the fields of the current event |
| 1422 | *Input params |
| 1423 | * t : tracefile |
| 1424 | *return value |
| 1425 | * 0 : success |
| 1426 | * ERANGE : event id is out of range |
| 1427 | ****************************************************************************/ |
| 1428 | |
| 1429 | int skipEvent(LttTracefile * t) |
| 1430 | { |
| 1431 | int evId; |
| 1432 | void * evData; |
| 1433 | LttEventType * evT; |
| 1434 | LttField * rootFld; |
| 1435 | |
| 1436 | evId = (int)(*(guint16 *)(t->cur_event_pos)); |
| 1437 | evData = t->cur_event_pos + EVENT_HEADER_SIZE; |
| 1438 | |
| 1439 | evT = ltt_trace_eventtype_get(t->trace,(unsigned)evId); |
| 1440 | |
| 1441 | if(likely(evT)) rootFld = evT->root_field; |
| 1442 | else return ERANGE; |
| 1443 | |
| 1444 | if(likely(rootFld)){ |
| 1445 | //event has string/sequence or the last event is not the same event |
| 1446 | if(likely((evT->latest_block!=t->which_block || evT->latest_event!=t->which_event) |
| 1447 | && rootFld->field_fixed == 0)){ |
| 1448 | setFieldsOffset(t, evT, evData, t->trace); |
| 1449 | } |
| 1450 | t->cur_event_pos += EVENT_HEADER_SIZE + rootFld->field_size; |
| 1451 | }else t->cur_event_pos += EVENT_HEADER_SIZE; |
| 1452 | |
| 1453 | evT->latest_block = t->which_block; |
| 1454 | evT->latest_event = t->which_event; |
| 1455 | |
| 1456 | //the next event is in the next block |
| 1457 | if(unlikely(evId == TRACE_BLOCK_END)){ |
| 1458 | t->cur_event_pos = t->buffer + t->block_size; |
| 1459 | }else{ |
| 1460 | t->which_event++; |
| 1461 | t->current_event_time = getEventTime(t); |
| 1462 | } |
| 1463 | |
| 1464 | return 0; |
| 1465 | } |
| 1466 | |
| 1467 | |
| 1468 | /***************************************************************************** |
| 1469 | *Function name |
| 1470 | * getCyclePerNsec : calculate cycles per nsec for current block |
| 1471 | * MD: should have tracefile_read the whole block, so we know the |
| 1472 | * total of cycles in it before being called. |
| 1473 | *Input Params |
| 1474 | * t : tracefile |
| 1475 | ****************************************************************************/ |
| 1476 | |
| 1477 | void getCyclePerNsec(LttTracefile * t) |
| 1478 | { |
| 1479 | LttTime lBufTotalTime; /* Total time for this buffer */ |
| 1480 | double lBufTotalNSec; /* Total time for this buffer in nsecs */ |
| 1481 | double lBufTotalCycle;/* Total cycles for this buffer */ |
| 1482 | |
| 1483 | /* Calculate the total time for this buffer */ |
| 1484 | lBufTotalTime = ltt_time_sub(t->a_block_end->time, t->a_block_start->time); |
| 1485 | |
| 1486 | /* Calculate the total cycles for this bufffer */ |
| 1487 | lBufTotalCycle = t->a_block_end->cycle_count; |
| 1488 | lBufTotalCycle -= t->a_block_start->cycle_count; |
| 1489 | |
| 1490 | /* Convert the total time to nsecs */ |
| 1491 | lBufTotalNSec = ltt_time_to_double(lBufTotalTime); |
| 1492 | |
| 1493 | t->nsec_per_cycle = (double)lBufTotalNSec / (double)lBufTotalCycle; |
| 1494 | /* Pre-multiply one overflow (2^32 cycles) by nsec_per_cycle */ |
| 1495 | t->one_overflow_nsec = t->nsec_per_cycle * (double)0x100000000ULL; |
| 1496 | |
| 1497 | /* See : http://www.azillionmonkeys.com/qed/adiv.html */ |
| 1498 | // precalculate the reciprocal, so divisions will be really fast. |
| 1499 | // 2^32-1 == 0xFFFFFFFFULL |
| 1500 | //{ |
| 1501 | // double int_res = lBufTotalCycle/lBufTotalNSec; |
| 1502 | // t->cycles_per_nsec_reciprocal = |
| 1503 | // ((0xFFFF+int_res)/int_res); |
| 1504 | //} |
| 1505 | |
| 1506 | } |
| 1507 | |
| 1508 | /**************************************************************************** |
| 1509 | *Function name |
| 1510 | * getEventTime : obtain the time of an event |
| 1511 | * NOTE : this function _really_ is on critical path. |
| 1512 | *Input params |
| 1513 | * tf : tracefile |
| 1514 | *Return value |
| 1515 | * LttTime : the time of the event |
| 1516 | ****************************************************************************/ |
| 1517 | |
| 1518 | static inline LttTime getEventTime(LttTracefile * tf) |
| 1519 | { |
| 1520 | LttTime time; |
| 1521 | LttCycleCount cycle_count; // cycle count for the current event |
| 1522 | //LttCycleCount lEventTotalCycle; // Total cycles from start for event |
| 1523 | gint64 lEventNSec; // Total nsecs from start for event |
| 1524 | LttTime lTimeOffset; // Time offset in struct LttTime |
| 1525 | guint16 evId; |
| 1526 | |
| 1527 | evId = *(guint16 *)tf->cur_event_pos; |
| 1528 | //if(unlikely(evId == TRACE_BLOCK_START)){ |
| 1529 | // tf->count = 0; |
| 1530 | // tf->pre_cycle_count = 0; |
| 1531 | // tf->cur_cycle_count = tf->a_block_start->cycle_count; |
| 1532 | // return tf->a_block_start->time; |
| 1533 | //}//else if(unlikely(evId == TRACE_BLOCK_END)){ |
| 1534 | //tf->count = 0; |
| 1535 | //tf->pre_cycle_count = 0; |
| 1536 | //tf->cur_cycle_count = tf->a_block_end->cycle_count; |
| 1537 | //return tf->a_block_end->time; |
| 1538 | //} |
| 1539 | |
| 1540 | // Calculate total time in cycles from start of buffer for this event |
| 1541 | cycle_count = (LttCycleCount)*(guint32 *)(tf->cur_event_pos + EVENT_ID_SIZE); |
| 1542 | //g_debug("event cycle count %llu", cycle_count); |
| 1543 | // |
| 1544 | //gint64 delta_count = (gint64)(cycle_count - tf->pre_cycle_count); |
| 1545 | //LttCycleCount res_delta_count; |
| 1546 | gboolean comp_count = cycle_count < tf->pre_cycle_count; |
| 1547 | tf->pre_cycle_count = cycle_count; |
| 1548 | |
| 1549 | if(unlikely(comp_count)) { |
| 1550 | /* Wrapped */ |
| 1551 | tf->overflow_nsec += tf->one_overflow_nsec; |
| 1552 | tf->count++; //increment overflow count |
| 1553 | } |
| 1554 | |
| 1555 | //if(unlikely(cycle_count < tf->pre_cycle_count)) tf->count++; |
| 1556 | //if(unlikely(delta_count < 0)) { |
| 1557 | // tf->count++; //increment wrap count |
| 1558 | // keep in mind that delta_count is negative here. |
| 1559 | // res_delta_count = delta_count + 0x100000000ULL ; |
| 1560 | //} else |
| 1561 | // res_delta_count = (LttCycleCount)delta_count; |
| 1562 | |
| 1563 | //cycle_count += (LttCycleCount)tf->count << 32; |
| 1564 | |
| 1565 | //FIXME (MD) |
| 1566 | // if(tf->cur_heart_beat_number > tf->count) |
| 1567 | // cycle_count += (tf->cur_heart_beat_number - tf->count) << 32; |
| 1568 | |
| 1569 | //tf->cur_cycle_count = tf->cur_cycle_count + res_delta_count; |
| 1570 | // |
| 1571 | // |
| 1572 | // Total cycle counter of the event. |
| 1573 | //tf->cur_cycle_count = cycle_count | ((LttCycleCount)tf->count << 32); |
| 1574 | |
| 1575 | //g_debug("cur cycle count %llu", tf->cur_cycle_count); |
| 1576 | |
| 1577 | // Total number of cycles since the beginning of the block |
| 1578 | //lEventTotalCycle = tf->cur_cycle_count |
| 1579 | // - tf->a_block_start->cycle_count; |
| 1580 | |
| 1581 | |
| 1582 | |
| 1583 | #if 0 |
| 1584 | // Calculate total time in cycles from start of buffer for this event |
| 1585 | cycle_count = (LttCycleCount)*(guint32 *)(tf->cur_event_pos + EVENT_ID_SIZE); |
| 1586 | |
| 1587 | if(unlikely(cycle_count < tf->pre_cycle_count)) tf->count++; |
| 1588 | tf->pre_cycle_count = cycle_count; |
| 1589 | cycle_count += (LttCycleCount)tf->count << 32; |
| 1590 | |
| 1591 | //FIXME (MD) |
| 1592 | // if(tf->cur_heart_beat_number > tf->count) |
| 1593 | // cycle_count += (tf->cur_heart_beat_number - tf->count) << 32; |
| 1594 | |
| 1595 | tf->cur_cycle_count = cycle_count; |
| 1596 | |
| 1597 | lEventTotalCycle = cycle_count; |
| 1598 | lEventTotalCycle -= tf->a_block_start->cycle_count; |
| 1599 | #endif //0 |
| 1600 | // Convert it to nsecs |
| 1601 | //lEventNSec = (double)lEventTotalCycle * (double)tf->nsec_per_cycle; |
| 1602 | //lEventNSec = (tf->cycles_per_nsec_reciprocal * lEventTotalCycle) >> 16; |
| 1603 | |
| 1604 | // Determine offset in struct LttTime |
| 1605 | //lTimeOffset = ltt_time_from_double(lEventNSec); |
| 1606 | // |
| 1607 | // We do not substract block start cycle count here, it has already been done |
| 1608 | // on the overflow_nsec |
| 1609 | // The result should never be negative, because the cycle count of |
| 1610 | // the event following the block start should be >= the previous one. |
| 1611 | lEventNSec = (gint64)((double)cycle_count * tf->nsec_per_cycle) |
| 1612 | +tf->overflow_nsec; |
| 1613 | //g_assert(lEventNSec >= 0); |
| 1614 | lTimeOffset = ltt_time_from_uint64(lEventNSec); |
| 1615 | |
| 1616 | time = ltt_time_add(tf->a_block_start->time, lTimeOffset); |
| 1617 | |
| 1618 | return time; |
| 1619 | } |
| 1620 | |
| 1621 | /***************************************************************************** |
| 1622 | *Function name |
| 1623 | * setFieldsOffset : set offset of the fields |
| 1624 | *Input params |
| 1625 | * tracefile : opened trace file |
| 1626 | * evT : the event type |
| 1627 | * evD : event data, it may be NULL |
| 1628 | ****************************************************************************/ |
| 1629 | |
| 1630 | void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace* t) |
| 1631 | { |
| 1632 | LttField * rootFld = evT->root_field; |
| 1633 | // rootFld->base_address = evD; |
| 1634 | |
| 1635 | if(likely(rootFld)) |
| 1636 | rootFld->field_size = getFieldtypeSize(tf, evT, 0,0,rootFld, evD,t); |
| 1637 | } |
| 1638 | |
| 1639 | /***************************************************************************** |
| 1640 | *Function name |
| 1641 | * getFieldtypeSize: get the size of the field type (primitive type) |
| 1642 | *Input params |
| 1643 | * tracefile : opened trace file |
| 1644 | * evT : event type |
| 1645 | * offsetRoot : offset from the root |
| 1646 | * offsetParent : offset from the parrent |
| 1647 | * fld : field |
| 1648 | * evD : event data, it may be NULL |
| 1649 | *Return value |
| 1650 | * int : size of the field |
| 1651 | ****************************************************************************/ |
| 1652 | |
| 1653 | int getFieldtypeSize(LttTracefile * t, LttEventType * evT, int offsetRoot, |
| 1654 | int offsetParent, LttField * fld, void *evD, LttTrace *trace) |
| 1655 | { |
| 1656 | int size, size1, element_number, i, offset1, offset2; |
| 1657 | LttType * type = fld->field_type; |
| 1658 | |
| 1659 | if(likely(t)){ |
| 1660 | if(unlikely(evT->latest_block==t->which_block && evT->latest_event==t->which_event)){ |
| 1661 | return fld->field_size; |
| 1662 | } |
| 1663 | } |
| 1664 | |
| 1665 | if(likely(fld->field_fixed == 1)){ |
| 1666 | if(fld == evT->root_field) return fld->field_size; |
| 1667 | } |
| 1668 | |
| 1669 | switch(type->type_class) { |
| 1670 | case LTT_ARRAY: |
| 1671 | element_number = (int) type->element_number; |
| 1672 | if(fld->field_fixed == -1){ |
| 1673 | size = getFieldtypeSize(t, evT, offsetRoot, |
| 1674 | 0,fld->child[0], NULL, trace); |
| 1675 | if(size == 0){ //has string or sequence |
| 1676 | fld->field_fixed = 0; |
| 1677 | }else{ |
| 1678 | fld->field_fixed = 1; |
| 1679 | size *= element_number; |
| 1680 | } |
| 1681 | }else if(fld->field_fixed == 0){// has string or sequence |
| 1682 | size = 0; |
| 1683 | for(i=0;i<element_number;i++){ |
| 1684 | size += getFieldtypeSize(t, evT, offsetRoot+size,size, |
| 1685 | fld->child[0], evD+size, trace); |
| 1686 | } |
| 1687 | }else size = fld->field_size; |
| 1688 | break; |
| 1689 | |
| 1690 | case LTT_SEQUENCE: |
| 1691 | size1 = (int) ltt_type_size(trace, type); |
| 1692 | if(fld->field_fixed == -1){ |
| 1693 | fld->sequ_number_size = size1; |
| 1694 | fld->field_fixed = 0; |
| 1695 | size = getFieldtypeSize(t, evT, offsetRoot, |
| 1696 | 0,fld->child[0], NULL, trace); |
| 1697 | fld->element_size = size; |
| 1698 | }else{//0: sequence |
| 1699 | element_number = getIntNumber(size1,evD); |
| 1700 | type->element_number = element_number; |
| 1701 | if(fld->element_size > 0){ |
| 1702 | size = element_number * fld->element_size; |
| 1703 | }else{//sequence has string or sequence |
| 1704 | size = 0; |
| 1705 | for(i=0;i<element_number;i++){ |
| 1706 | size += getFieldtypeSize(t, evT, offsetRoot+size+size1,size+size1, |
| 1707 | fld->child[0], evD+size+size1, trace); |
| 1708 | } |
| 1709 | } |
| 1710 | size += size1; |
| 1711 | } |
| 1712 | break; |
| 1713 | |
| 1714 | case LTT_STRING: |
| 1715 | size = 0; |
| 1716 | if(fld->field_fixed == -1){ |
| 1717 | fld->field_fixed = 0; |
| 1718 | }else{//0: string |
| 1719 | size = strlen((char*)evD) + 1; //include end : '\0' |
| 1720 | } |
| 1721 | break; |
| 1722 | |
| 1723 | case LTT_STRUCT: |
| 1724 | element_number = (int) type->element_number; |
| 1725 | size = 0; |
| 1726 | if(fld->field_fixed == -1){ |
| 1727 | offset1 = offsetRoot; |
| 1728 | offset2 = 0; |
| 1729 | for(i=0;i<element_number;i++){ |
| 1730 | size1=getFieldtypeSize(t, evT,offset1,offset2, |
| 1731 | fld->child[i], NULL, trace); |
| 1732 | if(size1 > 0 && size >= 0){ |
| 1733 | size += size1; |
| 1734 | if(offset1 >= 0) offset1 += size1; |
| 1735 | offset2 += size1; |
| 1736 | }else{ |
| 1737 | size = -1; |
| 1738 | offset1 = -1; |
| 1739 | offset2 = -1; |
| 1740 | } |
| 1741 | } |
| 1742 | if(size == -1){ |
| 1743 | fld->field_fixed = 0; |
| 1744 | size = 0; |
| 1745 | }else fld->field_fixed = 1; |
| 1746 | }else if(fld->field_fixed == 0){ |
| 1747 | offset1 = offsetRoot; |
| 1748 | offset2 = 0; |
| 1749 | for(i=0;i<element_number;i++){ |
| 1750 | size=getFieldtypeSize(t,evT,offset1,offset2, |
| 1751 | fld->child[i],evD+offset2, trace); |
| 1752 | offset1 += size; |
| 1753 | offset2 += size; |
| 1754 | } |
| 1755 | size = offset2; |
| 1756 | }else size = fld->field_size; |
| 1757 | break; |
| 1758 | |
| 1759 | default: |
| 1760 | if(fld->field_fixed == -1){ |
| 1761 | size = (int) ltt_type_size(trace, type); |
| 1762 | fld->field_fixed = 1; |
| 1763 | }else size = fld->field_size; |
| 1764 | break; |
| 1765 | } |
| 1766 | |
| 1767 | |
| 1768 | |
| 1769 | #if 0 |
| 1770 | if(type->type_class != LTT_STRUCT && type->type_class != LTT_ARRAY && |
| 1771 | type->type_class != LTT_SEQUENCE && type->type_class != LTT_STRING){ |
| 1772 | if(fld->field_fixed == -1){ |
| 1773 | size = (int) ltt_type_size(trace, type); |
| 1774 | fld->field_fixed = 1; |
| 1775 | }else size = fld->field_size; |
| 1776 | |
| 1777 | }else if(type->type_class == LTT_ARRAY){ |
| 1778 | element_number = (int) type->element_number; |
| 1779 | if(fld->field_fixed == -1){ |
| 1780 | size = getFieldtypeSize(t, evT, offsetRoot,0,fld->child[0], NULL, trace); |
| 1781 | if(size == 0){ //has string or sequence |
| 1782 | fld->field_fixed = 0; |
| 1783 | }else{ |
| 1784 | fld->field_fixed = 1; |
| 1785 | size *= element_number; |
| 1786 | } |
| 1787 | }else if(fld->field_fixed == 0){// has string or sequence |
| 1788 | size = 0; |
| 1789 | for(i=0;i<element_number;i++){ |
| 1790 | size += getFieldtypeSize(t, evT, offsetRoot+size,size, |
| 1791 | fld->child[0], evD+size, trace); |
| 1792 | } |
| 1793 | }else size = fld->field_size; |
| 1794 | |
| 1795 | }else if(type->type_class == LTT_SEQUENCE){ |
| 1796 | size1 = (int) ltt_type_size(trace, type); |
| 1797 | if(fld->field_fixed == -1){ |
| 1798 | fld->sequ_number_size = size1; |
| 1799 | fld->field_fixed = 0; |
| 1800 | size = getFieldtypeSize(t, evT, offsetRoot,0,fld->child[0], NULL, trace); |
| 1801 | fld->element_size = size; |
| 1802 | }else{//0: sequence |
| 1803 | element_number = getIntNumber(size1,evD); |
| 1804 | type->element_number = element_number; |
| 1805 | if(fld->element_size > 0){ |
| 1806 | size = element_number * fld->element_size; |
| 1807 | }else{//sequence has string or sequence |
| 1808 | size = 0; |
| 1809 | for(i=0;i<element_number;i++){ |
| 1810 | size += getFieldtypeSize(t, evT, offsetRoot+size+size1,size+size1, |
| 1811 | fld->child[0], evD+size+size1, trace); |
| 1812 | } |
| 1813 | } |
| 1814 | size += size1; |
| 1815 | } |
| 1816 | |
| 1817 | }else if(type->type_class == LTT_STRING){ |
| 1818 | size = 0; |
| 1819 | if(fld->field_fixed == -1){ |
| 1820 | fld->field_fixed = 0; |
| 1821 | }else{//0: string |
| 1822 | size = strlen((char*)evD) + 1; //include end : '\0' |
| 1823 | } |
| 1824 | |
| 1825 | }else if(type->type_class == LTT_STRUCT){ |
| 1826 | element_number = (int) type->element_number; |
| 1827 | size = 0; |
| 1828 | if(fld->field_fixed == -1){ |
| 1829 | offset1 = offsetRoot; |
| 1830 | offset2 = 0; |
| 1831 | for(i=0;i<element_number;i++){ |
| 1832 | size1=getFieldtypeSize(t, evT,offset1,offset2, fld->child[i], NULL, trace); |
| 1833 | if(size1 > 0 && size >= 0){ |
| 1834 | size += size1; |
| 1835 | if(offset1 >= 0) offset1 += size1; |
| 1836 | offset2 += size1; |
| 1837 | }else{ |
| 1838 | size = -1; |
| 1839 | offset1 = -1; |
| 1840 | offset2 = -1; |
| 1841 | } |
| 1842 | } |
| 1843 | if(size == -1){ |
| 1844 | fld->field_fixed = 0; |
| 1845 | size = 0; |
| 1846 | }else fld->field_fixed = 1; |
| 1847 | }else if(fld->field_fixed == 0){ |
| 1848 | offset1 = offsetRoot; |
| 1849 | offset2 = 0; |
| 1850 | for(i=0;i<element_number;i++){ |
| 1851 | size=getFieldtypeSize(t,evT,offset1,offset2,fld->child[i],evD+offset2, trace); |
| 1852 | offset1 += size; |
| 1853 | offset2 += size; |
| 1854 | } |
| 1855 | size = offset2; |
| 1856 | }else size = fld->field_size; |
| 1857 | } |
| 1858 | #endif //0 |
| 1859 | |
| 1860 | fld->offset_root = offsetRoot; |
| 1861 | fld->offset_parent = offsetParent; |
| 1862 | if(!evD){ |
| 1863 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 1864 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 1865 | } |
| 1866 | fld->field_size = size; |
| 1867 | |
| 1868 | return size; |
| 1869 | } |
| 1870 | |
| 1871 | |
| 1872 | /***************************************************************************** |
| 1873 | *Function name |
| 1874 | * getIntNumber : get an integer number |
| 1875 | *Input params |
| 1876 | * size : the size of the integer |
| 1877 | * evD : the event data |
| 1878 | *Return value |
| 1879 | * gint64 : a 64 bits integer |
| 1880 | ****************************************************************************/ |
| 1881 | |
| 1882 | gint64 getIntNumber(int size, void *evD) |
| 1883 | { |
| 1884 | gint64 i; |
| 1885 | |
| 1886 | switch(size) { |
| 1887 | case 1: i = *(gint8 *)evD; break; |
| 1888 | case 2: i = *(gint16 *)evD; break; |
| 1889 | case 4: i = *(gint32 *)evD; break; |
| 1890 | case 8: i = *(gint64 *)evD; break; |
| 1891 | default: i = *(gint64 *)evD; |
| 1892 | g_critical("getIntNumber : integer size %d unknown", size); |
| 1893 | break; |
| 1894 | } |
| 1895 | |
| 1896 | #if 0 |
| 1897 | if(size == 1) i = *(gint8 *)evD; |
| 1898 | else if(size == 2) i = *(gint16 *)evD; |
| 1899 | else if(size == 4) i = *(gint32 *)evD; |
| 1900 | else if(size == 8) i = *(gint64 *)evD; |
| 1901 | #endif //0 |
| 1902 | |
| 1903 | return (gint64)i; |
| 1904 | } |
| 1905 | |
| 1906 | /***************************************************************************** |
| 1907 | *Function name |
| 1908 | * getDataEndianType : get the data type size and endian type of the local |
| 1909 | * machine |
| 1910 | *Input params |
| 1911 | * size : size of data type |
| 1912 | * endian : endian type, little or big |
| 1913 | ****************************************************************************/ |
| 1914 | |
| 1915 | void getDataEndianType(LttArchSize * size, LttArchEndian * endian) |
| 1916 | { |
| 1917 | int i = 1; |
| 1918 | char c = (char) i; |
| 1919 | int sizeInt=sizeof(int), sizeLong=sizeof(long), sizePointer=sizeof(void *); |
| 1920 | |
| 1921 | if(c == 1) *endian = LTT_LITTLE_ENDIAN; |
| 1922 | else *endian = LTT_BIG_ENDIAN; |
| 1923 | |
| 1924 | if(sizeInt == 2 && sizeLong == 4 && sizePointer == 4) |
| 1925 | *size = LTT_LP32; |
| 1926 | else if(sizeInt == 4 && sizeLong == 4 && sizePointer == 4) |
| 1927 | *size = LTT_ILP32; |
| 1928 | else if(sizeInt == 4 && sizeLong == 8 && sizePointer == 8) |
| 1929 | *size = LTT_LP64; |
| 1930 | else if(sizeInt == 8 && sizeLong == 8 && sizePointer == 8) |
| 1931 | *size = LTT_ILP64; |
| 1932 | else *size = LTT_UNKNOWN; |
| 1933 | } |
| 1934 | |
| 1935 | /* get the node name of the system */ |
| 1936 | |
| 1937 | char * ltt_trace_system_description_node_name (LttSystemDescription * s) |
| 1938 | { |
| 1939 | return s->node_name; |
| 1940 | } |
| 1941 | |
| 1942 | |
| 1943 | /* get the domain name of the system */ |
| 1944 | |
| 1945 | char * ltt_trace_system_description_domain_name (LttSystemDescription * s) |
| 1946 | { |
| 1947 | return s->domain_name; |
| 1948 | } |
| 1949 | |
| 1950 | |
| 1951 | /* get the description of the system */ |
| 1952 | |
| 1953 | char * ltt_trace_system_description_description (LttSystemDescription * s) |
| 1954 | { |
| 1955 | return s->description; |
| 1956 | } |
| 1957 | |
| 1958 | |
| 1959 | /* get the start time of the trace */ |
| 1960 | |
| 1961 | LttTime ltt_trace_system_description_trace_start_time(LttSystemDescription *s) |
| 1962 | { |
| 1963 | return s->trace_start; |
| 1964 | } |
| 1965 | |
| 1966 | |
| 1967 | LttTracefile *ltt_tracefile_new() |
| 1968 | { |
| 1969 | return g_new(LttTracefile, 1); |
| 1970 | } |
| 1971 | |
| 1972 | void ltt_tracefile_destroy(LttTracefile *tf) |
| 1973 | { |
| 1974 | g_free(tf); |
| 1975 | } |
| 1976 | |
| 1977 | void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src) |
| 1978 | { |
| 1979 | *dest = *src; |
| 1980 | } |
| 1981 | |