| 1 | /* This file is part of the Linux Trace Toolkit viewer |
| 2 | * Copyright (C) 2005 Mathieu Desnoyers |
| 3 | * |
| 4 | * Complete rewrite from the original version made by XangXiu Yang. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License Version 2 as |
| 8 | * published by the Free Software Foundation; |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| 18 | * MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | #ifdef HAVE_CONFIG_H |
| 22 | #include <config.h> |
| 23 | #endif |
| 24 | |
| 25 | #include <stdio.h> |
| 26 | #include <fcntl.h> |
| 27 | #include <string.h> |
| 28 | #include <dirent.h> |
| 29 | #include <sys/stat.h> |
| 30 | #include <sys/types.h> |
| 31 | #include <errno.h> |
| 32 | #include <unistd.h> |
| 33 | #include <math.h> |
| 34 | #include <glib.h> |
| 35 | #include <malloc.h> |
| 36 | #include <sys/mman.h> |
| 37 | |
| 38 | // For realpath |
| 39 | #include <limits.h> |
| 40 | #include <stdlib.h> |
| 41 | |
| 42 | |
| 43 | #include "parser.h" |
| 44 | #include <ltt/ltt.h> |
| 45 | #include "ltt-private.h" |
| 46 | #include <ltt/trace.h> |
| 47 | #include <ltt/facility.h> |
| 48 | #include <ltt/event.h> |
| 49 | #include <ltt/type.h> |
| 50 | #include <ltt/ltt-types.h> |
| 51 | |
| 52 | |
| 53 | /* Facility names used in this file */ |
| 54 | |
| 55 | GQuark LTT_FACILITY_NAME_HEARTBEAT, |
| 56 | LTT_EVENT_NAME_HEARTBEAT; |
| 57 | |
| 58 | #ifndef g_open |
| 59 | #define g_open open |
| 60 | #endif |
| 61 | |
| 62 | |
| 63 | #define __UNUSED__ __attribute__((__unused__)) |
| 64 | |
| 65 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
| 66 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
| 67 | |
| 68 | #define g_close close |
| 69 | |
| 70 | /* obtain the time of an event */ |
| 71 | |
| 72 | static inline LttTime getEventTime(LttTracefile * tf); |
| 73 | |
| 74 | |
| 75 | /* set the offset of the fields belonging to the event, |
| 76 | need the information of the archecture */ |
| 77 | void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace *t); |
| 78 | |
| 79 | /* get the size of the field type according to the archtecture's |
| 80 | size and endian type(info of the archecture) */ |
| 81 | static inline gint getFieldtypeSize(LttTracefile * tf, |
| 82 | LttEventType * evT, gint offsetRoot, |
| 83 | gint offsetParent, LttField *fld, void *evD, LttTrace* t); |
| 84 | |
| 85 | /* read a fixed size or a block information from the file (fd) */ |
| 86 | int map_block(LttTracefile * tf, unsigned int block_num); |
| 87 | |
| 88 | /* calculate cycles per nsec for current block */ |
| 89 | void getCyclePerNsec(LttTracefile * t); |
| 90 | |
| 91 | /* reinitialize the info of the block which is already in the buffer */ |
| 92 | void updateTracefile(LttTracefile * tf); |
| 93 | |
| 94 | /* go to the next event */ |
| 95 | int skipEvent(LttTracefile * t); |
| 96 | |
| 97 | |
| 98 | /* Functions to parse system.xml file (using glib xml parser) */ |
| 99 | static void parser_start_element (GMarkupParseContext __UNUSED__ *context, |
| 100 | const gchar *element_name, |
| 101 | const gchar **attribute_names, |
| 102 | const gchar **attribute_values, |
| 103 | gpointer user_data, |
| 104 | GError **error) |
| 105 | { |
| 106 | int i=0; |
| 107 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
| 108 | if(strcmp("system", element_name)){ |
| 109 | *error = g_error_new(G_MARKUP_ERROR, |
| 110 | G_LOG_LEVEL_WARNING, |
| 111 | "This is not system.xml file"); |
| 112 | return; |
| 113 | } |
| 114 | |
| 115 | while(attribute_names[i]){ |
| 116 | if(strcmp("node_name", attribute_names[i])==0){ |
| 117 | des->node_name = g_strdup(attribute_values[i]); |
| 118 | }else if(strcmp("domainname", attribute_names[i])==0){ |
| 119 | des->domain_name = g_strdup(attribute_values[i]); |
| 120 | }else if(strcmp("cpu", attribute_names[i])==0){ |
| 121 | des->nb_cpu = atoi(attribute_values[i]); |
| 122 | }else if(strcmp("arch_size", attribute_names[i])==0){ |
| 123 | if(strcmp(attribute_values[i],"LP32") == 0) des->size = LTT_LP32; |
| 124 | else if(strcmp(attribute_values[i],"ILP32") == 0) des->size = LTT_ILP32; |
| 125 | else if(strcmp(attribute_values[i],"LP64") == 0) des->size = LTT_LP64; |
| 126 | else if(strcmp(attribute_values[i],"ILP64") == 0) des->size = LTT_ILP64; |
| 127 | else if(strcmp(attribute_values[i],"UNKNOWN") == 0) des->size = LTT_UNKNOWN; |
| 128 | }else if(strcmp("endian", attribute_names[i])==0){ |
| 129 | if(strcmp(attribute_values[i],"LITTLE_ENDIAN") == 0) |
| 130 | des->endian = LTT_LITTLE_ENDIAN; |
| 131 | else if(strcmp(attribute_values[i],"BIG_ENDIAN") == 0) |
| 132 | des->endian = LTT_BIG_ENDIAN; |
| 133 | }else if(strcmp("kernel_name", attribute_names[i])==0){ |
| 134 | des->kernel_name = g_strdup(attribute_values[i]); |
| 135 | }else if(strcmp("kernel_release", attribute_names[i])==0){ |
| 136 | des->kernel_release = g_strdup(attribute_values[i]); |
| 137 | }else if(strcmp("kernel_version", attribute_names[i])==0){ |
| 138 | des->kernel_version = g_strdup(attribute_values[i]); |
| 139 | }else if(strcmp("machine", attribute_names[i])==0){ |
| 140 | des->machine = g_strdup(attribute_values[i]); |
| 141 | }else if(strcmp("processor", attribute_names[i])==0){ |
| 142 | des->processor = g_strdup(attribute_values[i]); |
| 143 | }else if(strcmp("hardware_platform", attribute_names[i])==0){ |
| 144 | des->hardware_platform = g_strdup(attribute_values[i]); |
| 145 | }else if(strcmp("operating_system", attribute_names[i])==0){ |
| 146 | des->operating_system = g_strdup(attribute_values[i]); |
| 147 | }else if(strcmp("ltt_major_version", attribute_names[i])==0){ |
| 148 | des->ltt_major_version = atoi(attribute_values[i]); |
| 149 | }else if(strcmp("ltt_minor_version", attribute_names[i])==0){ |
| 150 | des->ltt_minor_version = atoi(attribute_values[i]); |
| 151 | }else if(strcmp("ltt_block_size", attribute_names[i])==0){ |
| 152 | des->ltt_block_size = atoi(attribute_values[i]); |
| 153 | }else{ |
| 154 | *error = g_error_new(G_MARKUP_ERROR, |
| 155 | G_LOG_LEVEL_WARNING, |
| 156 | "Not a valid attribute"); |
| 157 | return; |
| 158 | } |
| 159 | i++; |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | static void parser_characters (GMarkupParseContext __UNUSED__ *context, |
| 164 | const gchar *text, |
| 165 | gsize __UNUSED__ text_len, |
| 166 | gpointer user_data, |
| 167 | GError __UNUSED__ **error) |
| 168 | { |
| 169 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
| 170 | des->description = g_strdup(text); |
| 171 | } |
| 172 | |
| 173 | |
| 174 | /***************************************************************************** |
| 175 | *Function name |
| 176 | * ltt_tracefile_open : open a trace file, construct a LttTracefile |
| 177 | *Input params |
| 178 | * t : the trace containing the tracefile |
| 179 | * fileName : path name of the trace file |
| 180 | * tf : the tracefile structure |
| 181 | *Return value |
| 182 | * : 0 for success, -1 otherwise. |
| 183 | ****************************************************************************/ |
| 184 | |
| 185 | int ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf) |
| 186 | { |
| 187 | struct stat lTDFStat; /* Trace data file status */ |
| 188 | struct ltt_block_start_header *header; |
| 189 | |
| 190 | //open the file |
| 191 | tf->name = g_quark_from_string(fileName); |
| 192 | tf->trace = t; |
| 193 | tf->fd = g_open(fileName, O_RDONLY, 0); |
| 194 | if(tf->fd < 0){ |
| 195 | g_warning("Unable to open input data file %s\n", fileName); |
| 196 | goto end; |
| 197 | } |
| 198 | |
| 199 | // Get the file's status |
| 200 | if(fstat(tf->fd, &lTDFStat) < 0){ |
| 201 | g_warning("Unable to get the status of the input data file %s\n", fileName); |
| 202 | goto close_file; |
| 203 | } |
| 204 | |
| 205 | // Is the file large enough to contain a trace |
| 206 | if(lTDFStat.st_size < (off_t)(sizeof(BlockStart))){ |
| 207 | g_print("The input data file %s does not contain a trace\n", fileName); |
| 208 | goto close_file; |
| 209 | } |
| 210 | |
| 211 | /* Temporarily map the buffer start header to get trace information */ |
| 212 | /* Multiple of pages aligned head */ |
| 213 | tf->buffer.head = mmap(0, sizeof(struct ltt_block_start_header), PROT_READ, |
| 214 | tf->fd, 0); |
| 215 | if(tf->buffer == NULL) { |
| 216 | perror("Error in allocating memory for buffer of tracefile %s\n", fileName); |
| 217 | goto close_file; |
| 218 | } |
| 219 | g_assert(tf->buffer.head & (8-1) == 0); // make sure it's aligned. |
| 220 | |
| 221 | header = (struct ltt_block_start_header*)tf->buffer.head; |
| 222 | |
| 223 | if(header->traceset.magic_number == LTT_MAGIC_NUMBER) |
| 224 | tf->reverse_bo = 0; |
| 225 | else if(header->traceset.magic_number == LTT_REV_MAGIC_NUMBER) |
| 226 | tf->reverse_bo = 1; |
| 227 | else /* invalid magic number, bad tracefile ! */ |
| 228 | goto unmap_file; |
| 229 | |
| 230 | //store the size of the file |
| 231 | tf->file_size = lTDFStat.st_size; |
| 232 | tf->block_size = header->buf_size; |
| 233 | tf->block_number = tf->file_size / tf->block_size; |
| 234 | |
| 235 | vfree(tf->buffer.head); |
| 236 | tf->buffer.head = NULL; |
| 237 | |
| 238 | //read the first block |
| 239 | if(map_block(tf,0)) { |
| 240 | perror("Cannot map block %u for tracefile %s\n", 0, fileName); |
| 241 | goto close_file; |
| 242 | } |
| 243 | |
| 244 | return 0; |
| 245 | |
| 246 | /* Error */ |
| 247 | unmap_file: |
| 248 | munmap(tf->buffer.head, sizeof(struct ltt_block_start_header)); |
| 249 | close_file: |
| 250 | g_close(tf->fd); |
| 251 | end: |
| 252 | return -1; |
| 253 | } |
| 254 | |
| 255 | |
| 256 | /***************************************************************************** |
| 257 | *Open control and per cpu tracefiles |
| 258 | ****************************************************************************/ |
| 259 | |
| 260 | void ltt_tracefile_open_cpu(LttTrace *t, gchar * tracefile_name) |
| 261 | { |
| 262 | LttTracefile * tf; |
| 263 | tf = ltt_tracefile_open(t,tracefile_name); |
| 264 | if(!tf) return; |
| 265 | t->per_cpu_tracefile_number++; |
| 266 | g_ptr_array_add(t->per_cpu_tracefiles, tf); |
| 267 | } |
| 268 | |
| 269 | gint ltt_tracefile_open_control(LttTrace *t, gchar * control_name) |
| 270 | { |
| 271 | LttTracefile * tf; |
| 272 | LttEvent ev; |
| 273 | LttFacility * f; |
| 274 | void * pos; |
| 275 | FacilityLoad fLoad; |
| 276 | unsigned int i; |
| 277 | |
| 278 | tf = ltt_tracefile_open(t,control_name); |
| 279 | if(!tf) { |
| 280 | g_warning("ltt_tracefile_open_control : bad file descriptor"); |
| 281 | return -1; |
| 282 | } |
| 283 | t->control_tracefile_number++; |
| 284 | g_ptr_array_add(t->control_tracefiles,tf); |
| 285 | |
| 286 | //parse facilities tracefile to get base_id |
| 287 | if(strcmp(&control_name[strlen(control_name)-10],"facilities") ==0){ |
| 288 | while(1){ |
| 289 | if(!ltt_tracefile_read(tf,&ev)) return 0; // end of file |
| 290 | |
| 291 | if(ev.event_id == TRACE_FACILITY_LOAD){ |
| 292 | pos = ev.data; |
| 293 | fLoad.name = (gchar*)pos; |
| 294 | fLoad.checksum = *(LttChecksum*)(pos + strlen(fLoad.name)); |
| 295 | fLoad.base_code = *(guint32 *)(pos + strlen(fLoad.name) + sizeof(LttChecksum)); |
| 296 | |
| 297 | for(i=0;i<t->facility_number;i++){ |
| 298 | f = (LttFacility*)g_ptr_array_index(t->facilities,i); |
| 299 | if(strcmp(f->name,fLoad.name)==0 && fLoad.checksum==f->checksum){ |
| 300 | f->base_id = fLoad.base_code; |
| 301 | break; |
| 302 | } |
| 303 | } |
| 304 | if(i==t->facility_number) { |
| 305 | g_warning("Facility: %s, checksum: %u is not found", |
| 306 | fLoad.name,(unsigned int)fLoad.checksum); |
| 307 | return -1; |
| 308 | } |
| 309 | }else if(ev.event_id == TRACE_BLOCK_START){ |
| 310 | continue; |
| 311 | }else if(ev.event_id == TRACE_BLOCK_END){ |
| 312 | break; |
| 313 | }else { |
| 314 | g_warning("Not valid facilities trace file"); |
| 315 | return -1; |
| 316 | } |
| 317 | } |
| 318 | } |
| 319 | return 0; |
| 320 | } |
| 321 | |
| 322 | /***************************************************************************** |
| 323 | *Function name |
| 324 | * ltt_tracefile_close: close a trace file, |
| 325 | *Input params |
| 326 | * t : tracefile which will be closed |
| 327 | ****************************************************************************/ |
| 328 | |
| 329 | void ltt_tracefile_close(LttTracefile *t) |
| 330 | { |
| 331 | if(t->buffer.head != NULL) |
| 332 | munmap(t->buffer.head, t->buf_size); |
| 333 | g_close(t->fd); |
| 334 | } |
| 335 | |
| 336 | |
| 337 | /***************************************************************************** |
| 338 | *Get system information |
| 339 | ****************************************************************************/ |
| 340 | gint getSystemInfo(LttSystemDescription* des, gchar * pathname) |
| 341 | { |
| 342 | int fd; |
| 343 | GIOChannel *iochan; |
| 344 | gchar *buf = NULL; |
| 345 | gsize length; |
| 346 | |
| 347 | GMarkupParseContext * context; |
| 348 | GError * error = NULL; |
| 349 | GMarkupParser markup_parser = |
| 350 | { |
| 351 | parser_start_element, |
| 352 | NULL, |
| 353 | parser_characters, |
| 354 | NULL, /* passthrough */ |
| 355 | NULL /* error */ |
| 356 | }; |
| 357 | |
| 358 | fd = g_open(pathname, O_RDONLY, 0); |
| 359 | if(fd == -1){ |
| 360 | g_warning("Can not open file : %s\n", pathname); |
| 361 | return -1; |
| 362 | } |
| 363 | |
| 364 | iochan = g_io_channel_unix_new(fd); |
| 365 | |
| 366 | context = g_markup_parse_context_new(&markup_parser, 0, des,NULL); |
| 367 | |
| 368 | //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){ |
| 369 | while(g_io_channel_read_line(iochan, &buf, &length, NULL, &error) |
| 370 | != G_IO_STATUS_EOF) { |
| 371 | |
| 372 | if(error != NULL) { |
| 373 | g_warning("Can not read xml file: \n%s\n", error->message); |
| 374 | g_error_free(error); |
| 375 | } |
| 376 | if(!g_markup_parse_context_parse(context, buf, length, &error)){ |
| 377 | if(error != NULL) { |
| 378 | g_warning("Can not parse xml file: \n%s\n", error->message); |
| 379 | g_error_free(error); |
| 380 | } |
| 381 | g_markup_parse_context_free(context); |
| 382 | |
| 383 | g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ |
| 384 | if(error != NULL) { |
| 385 | g_warning("Can not close file: \n%s\n", error->message); |
| 386 | g_error_free(error); |
| 387 | } |
| 388 | |
| 389 | close(fd); |
| 390 | return -1; |
| 391 | } |
| 392 | } |
| 393 | g_markup_parse_context_free(context); |
| 394 | |
| 395 | g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ |
| 396 | if(error != NULL) { |
| 397 | g_warning("Can not close file: \n%s\n", error->message); |
| 398 | g_error_free(error); |
| 399 | } |
| 400 | |
| 401 | g_close(fd); |
| 402 | |
| 403 | g_free(buf); |
| 404 | return 0; |
| 405 | } |
| 406 | |
| 407 | /***************************************************************************** |
| 408 | *The following functions get facility/tracefile information |
| 409 | ****************************************************************************/ |
| 410 | |
| 411 | gint getFacilityInfo(LttTrace *t, gchar* eventdefs) |
| 412 | { |
| 413 | GDir * dir; |
| 414 | const gchar * name; |
| 415 | unsigned int i,j; |
| 416 | LttFacility * f; |
| 417 | LttEventType * et; |
| 418 | gchar fullname[DIR_NAME_SIZE]; |
| 419 | GError * error = NULL; |
| 420 | |
| 421 | dir = g_dir_open(eventdefs, 0, &error); |
| 422 | |
| 423 | if(error != NULL) { |
| 424 | g_warning("Can not open directory: %s, %s\n", eventdefs, error->message); |
| 425 | g_error_free(error); |
| 426 | return -1; |
| 427 | } |
| 428 | |
| 429 | while((name = g_dir_read_name(dir)) != NULL){ |
| 430 | if(!g_pattern_match_simple("*.xml", name)) continue; |
| 431 | strcpy(fullname,eventdefs); |
| 432 | strcat(fullname,name); |
| 433 | ltt_facility_open(t,fullname); |
| 434 | } |
| 435 | g_dir_close(dir); |
| 436 | |
| 437 | for(j=0;j<t->facility_number;j++){ |
| 438 | f = (LttFacility*)g_ptr_array_index(t->facilities, j); |
| 439 | for(i=0; i<f->event_number; i++){ |
| 440 | et = f->events[i]; |
| 441 | setFieldsOffset(NULL, et, NULL, t); |
| 442 | } |
| 443 | } |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | /***************************************************************************** |
| 448 | *A trace is specified as a pathname to the directory containing all the |
| 449 | *associated data (control tracefiles, per cpu tracefiles, event |
| 450 | *descriptions...). |
| 451 | * |
| 452 | *When a trace is closed, all the associated facilities, types and fields |
| 453 | *are released as well. |
| 454 | */ |
| 455 | |
| 456 | |
| 457 | /**************************************************************************** |
| 458 | * get_absolute_pathname |
| 459 | * |
| 460 | * return the unique pathname in the system |
| 461 | * |
| 462 | * MD : Fixed this function so it uses realpath, dealing well with |
| 463 | * forgotten cases (.. were not used correctly before). |
| 464 | * |
| 465 | ****************************************************************************/ |
| 466 | void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname) |
| 467 | { |
| 468 | abs_pathname[0] = '\0'; |
| 469 | |
| 470 | if ( realpath (pathname, abs_pathname) != NULL) |
| 471 | return; |
| 472 | else |
| 473 | { |
| 474 | /* error, return the original path unmodified */ |
| 475 | strcpy(abs_pathname, pathname); |
| 476 | return; |
| 477 | } |
| 478 | return; |
| 479 | } |
| 480 | |
| 481 | /* Search for something like : .*_.* |
| 482 | * |
| 483 | * The left side is the name, the right side is the number. |
| 484 | */ |
| 485 | |
| 486 | int get_tracefile_name_number(const gchar *raw_name, |
| 487 | GQuark *name, |
| 488 | guint *num) |
| 489 | { |
| 490 | guint raw_name_len = strlen(raw_name); |
| 491 | gchar char_name[PATH_MAX] |
| 492 | gchar *digit_begin; |
| 493 | int i; |
| 494 | int underscore_pos; |
| 495 | long int cpu_num; |
| 496 | gchar *endptr; |
| 497 | |
| 498 | for(i=raw_name_len-1;i>=0;i--) { |
| 499 | if(raw_name[i] == '_') break; |
| 500 | } |
| 501 | if(i==0) /* Either not found or name length is 0 */ |
| 502 | return -1; |
| 503 | underscore_pos = i; |
| 504 | |
| 505 | cpu_num = strtol(raw_name+underscore_pos+1, &endptr, 10); |
| 506 | |
| 507 | if(endptr == raw_name+underscore_pos+1) |
| 508 | return -1; /* No digit */ |
| 509 | if(cpu_num == LONG_MIN || cpu_num == LONG_MAX) |
| 510 | return -1; /* underflow / overflow */ |
| 511 | |
| 512 | char_name = strncpy(char_name, raw_name, underscore_pos); |
| 513 | |
| 514 | *name = g_quark_from_string(char_name); |
| 515 | *num = cpu_num; |
| 516 | |
| 517 | return 0; |
| 518 | } |
| 519 | |
| 520 | |
| 521 | void ltt_tracefile_group_destroy(gpointer data) |
| 522 | { |
| 523 | GArray *group = (GArray *)data; |
| 524 | int i; |
| 525 | LttTracefile *tf; |
| 526 | |
| 527 | for(i=0; i<group->len; i++) { |
| 528 | tf = &g_array_index (group, LttTracefile, i); |
| 529 | if(tf->cpu_online) |
| 530 | ltt_tracefile_close(tf); |
| 531 | } |
| 532 | } |
| 533 | |
| 534 | gboolean ltt_tracefile_group_has_cpu_online(gpointer data) |
| 535 | { |
| 536 | GArray *group = (GArray *)data; |
| 537 | int i; |
| 538 | LttTracefile *tf; |
| 539 | |
| 540 | for(i=0; i<group->len; i++) { |
| 541 | tf = &g_array_index (group, LttTracefile, i); |
| 542 | if(tf->cpu_online) return 1; |
| 543 | } |
| 544 | return 0; |
| 545 | } |
| 546 | |
| 547 | |
| 548 | /* Open each tracefile under a specific directory. Put them in a |
| 549 | * GData : permits to access them using their tracefile group pathname. |
| 550 | * i.e. access control/modules tracefile group by index : |
| 551 | * "control/module". |
| 552 | * |
| 553 | * A tracefile group is simply an array where all the per cpu tracefiles sits. |
| 554 | */ |
| 555 | |
| 556 | static int open_tracefiles(LttTrace *trace, char *root_path, GData *tracefiles) |
| 557 | { |
| 558 | DIR *dir = opendir(root_path); |
| 559 | struct dirent *entry; |
| 560 | struct stat stat_buf; |
| 561 | int ret; |
| 562 | char path[PATH_MAX]; |
| 563 | int path_len; |
| 564 | char *path_ptr; |
| 565 | |
| 566 | if(channel_dir == NULL) { |
| 567 | perror(subchannel_name); |
| 568 | return ENOENT; |
| 569 | } |
| 570 | |
| 571 | strncpy(path, root_path, PATH_MAX-1); |
| 572 | path_len = strlen(path); |
| 573 | path[path_len] = '/'; |
| 574 | path_len++; |
| 575 | path_ptr = path + path_len; |
| 576 | |
| 577 | while((entry = readdir(channel_dir)) != NULL) { |
| 578 | |
| 579 | if(entry->d_name[0] == '.') continue; |
| 580 | |
| 581 | strncpy(path_ptr, entry->d_name, PATH_MAX - path_len); |
| 582 | |
| 583 | ret = stat(path, &stat_buf); |
| 584 | if(ret == -1) { |
| 585 | perror(path); |
| 586 | continue; |
| 587 | } |
| 588 | |
| 589 | g_debug("Tracefile file or directory : %s\n", path); |
| 590 | |
| 591 | if(S_ISDIR(stat_buf.st_mode)) { |
| 592 | |
| 593 | g_debug("Entering subdirectory...\n"); |
| 594 | ret = open_tracefiles(path, tracefiles); |
| 595 | if(ret < 0) continue; |
| 596 | } else if(S_ISREG(stat_buf.st_mode)) { |
| 597 | g_debug("Opening file.\n"); |
| 598 | |
| 599 | GQuark name; |
| 600 | guint num; |
| 601 | GArray *group; |
| 602 | LttTracefile *tf; |
| 603 | guint len; |
| 604 | |
| 605 | if(get_tracefile_name_number(path, &name, &num)) |
| 606 | continue; /* invalid name */ |
| 607 | |
| 608 | group = g_datalist_get_data(tracefiles, name); |
| 609 | if(group == NULL) { |
| 610 | /* Elements are automatically cleared when the array is allocated. |
| 611 | * It makes the cpu_online variable set to 0 : cpu offline, by default. |
| 612 | */ |
| 613 | group = g_array_sized_new (FALSE, TRUE, sizeof(LttTracefile), 10); |
| 614 | g_datalist_set_data_full(tracefiles, name, |
| 615 | group, ltt_tracefile_group_destroy); |
| 616 | } |
| 617 | /* Add the per cpu tracefile to the named group */ |
| 618 | unsigned int old_len = group->len; |
| 619 | if(num+1 > old_len) |
| 620 | g_array_set_size(group, num+1); |
| 621 | tf = &g_array_index (group, LttTracefile, num); |
| 622 | |
| 623 | if(ltt_tracefile_open(trace, path, tf)) { |
| 624 | g_info("Error opening tracefile %s", path); |
| 625 | g_array_set_size(group, old_len); |
| 626 | |
| 627 | if(!ltt_tracefile_group_has_cpu_online(group)) |
| 628 | g_datalist_remove_data(tracefiles, name); |
| 629 | |
| 630 | continue; /* error opening the tracefile : bad magic number ? */ |
| 631 | } |
| 632 | tf->cpu_online = 1; |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | closedir(dir); |
| 637 | |
| 638 | return 0; |
| 639 | } |
| 640 | |
| 641 | LttTrace *ltt_trace_open(const gchar *pathname) |
| 642 | { |
| 643 | gchar abs_path[PATH_MAX]; |
| 644 | LttTrace * t; |
| 645 | LttTracefile tf; |
| 646 | GArray *group; |
| 647 | int i; |
| 648 | |
| 649 | LttTrace * t = g_new(LttTrace, 1); |
| 650 | if(!t) goto alloc_error; |
| 651 | |
| 652 | get_absolute_pathname(pathname, abs_path); |
| 653 | t->pathname = g_quark_from_string(abs_path); |
| 654 | |
| 655 | /* Open all the tracefiles */ |
| 656 | g_datalist_init(t->tracefiles); |
| 657 | if(open_tracefiles(t, abs_path, t->tracefiles)) |
| 658 | goto open_error; |
| 659 | |
| 660 | /* Load trace XML event descriptions */ |
| 661 | //TODO |
| 662 | |
| 663 | /* Parse each trace control/facilitiesN files : get runtime fac. info */ |
| 664 | group = g_datalist_get_data(t->tracefiles, LTT_TRACEFILE_NAME_FACILITIES); |
| 665 | if(group == NULL) { |
| 666 | g_error("Trace %s has no facility tracefile", abs_path); |
| 667 | goto facilities_error; |
| 668 | } |
| 669 | |
| 670 | for(i=0; i<group->len; i++) { |
| 671 | tf = &g_array_index (group, LttTracefile, i); |
| 672 | //TODO |
| 673 | process_facility_tracefile(tf); |
| 674 | } |
| 675 | |
| 676 | |
| 677 | |
| 678 | return t; |
| 679 | |
| 680 | /* Error handling */ |
| 681 | facilities_error: |
| 682 | open_error: |
| 683 | g_datalist_clear(t->tracefiles); |
| 684 | g_free(t); |
| 685 | alloc_error: |
| 686 | return NULL; |
| 687 | |
| 688 | |
| 689 | |
| 690 | LttSystemDescription * sys_description; |
| 691 | gchar eventdefs[DIR_NAME_SIZE]; |
| 692 | gchar info[DIR_NAME_SIZE]; |
| 693 | gchar cpu[DIR_NAME_SIZE]; |
| 694 | gchar tmp[DIR_NAME_SIZE]; |
| 695 | gboolean has_slash = FALSE; |
| 696 | |
| 697 | //establish the pathname to different directories |
| 698 | if(abs_path[strlen(abs_path)-1] == '/')has_slash = TRUE; |
| 699 | strcpy(eventdefs,abs_path); |
| 700 | if(!has_slash)strcat(eventdefs,"/"); |
| 701 | strcat(eventdefs,"eventdefs/"); |
| 702 | |
| 703 | strcpy(info,abs_path); |
| 704 | if(!has_slash)strcat(info,"/"); |
| 705 | strcat(info,"info/"); |
| 706 | |
| 707 | strcpy(control,abs_path); |
| 708 | if(!has_slash)strcat(control,"/"); |
| 709 | strcat(control,"control/"); |
| 710 | |
| 711 | strcpy(cpu,abs_path); |
| 712 | if(!has_slash)strcat(cpu,"/"); |
| 713 | strcat(cpu,"cpu/"); |
| 714 | |
| 715 | //new trace |
| 716 | sys_description = g_new(LttSystemDescription, 1); |
| 717 | t = g_new(LttTrace, 1); |
| 718 | t->pathname = g_strdup(abs_path); |
| 719 | t->facility_number = 0; |
| 720 | t->control_tracefile_number = 0; |
| 721 | t->per_cpu_tracefile_number = 0; |
| 722 | t->system_description = sys_description; |
| 723 | t->control_tracefiles = g_ptr_array_new(); |
| 724 | t->per_cpu_tracefiles = g_ptr_array_new(); |
| 725 | t->facilities = g_ptr_array_new(); |
| 726 | //getDataEndianType(&(t->my_arch_size), &(t->my_arch_endian)); |
| 727 | |
| 728 | //get system description |
| 729 | strcpy(tmp,info); |
| 730 | strcat(tmp,"system.xml"); |
| 731 | if(getSystemInfo(sys_description, tmp)) { |
| 732 | g_ptr_array_free(t->facilities, TRUE); |
| 733 | g_ptr_array_free(t->per_cpu_tracefiles, TRUE); |
| 734 | g_ptr_array_free(t->control_tracefiles, TRUE); |
| 735 | g_free(sys_description); |
| 736 | g_free(t->pathname); |
| 737 | g_free(t); |
| 738 | return NULL; |
| 739 | } |
| 740 | |
| 741 | /* Set the reverse byte order between trace and reader */ |
| 742 | if(sys_description->endian == LTT_LITTLE_ENDIAN |
| 743 | && G_BYTE_ORDER != G_LITTLE_ENDIAN) { |
| 744 | t->reverse_byte_order = 1; |
| 745 | } else if(sys_description->endian == LTT_BIG_ENDIAN |
| 746 | && G_BYTE_ORDER != G_BIG_ENDIAN) { |
| 747 | t->reverse_byte_order = 1; |
| 748 | } else t->reverse_byte_order = 0; |
| 749 | |
| 750 | //get facilities info |
| 751 | if(getFacilityInfo(t,eventdefs)) { |
| 752 | g_ptr_array_free(t->facilities, TRUE); |
| 753 | g_ptr_array_free(t->per_cpu_tracefiles, TRUE); |
| 754 | g_ptr_array_free(t->control_tracefiles, TRUE); |
| 755 | g_free(sys_description); |
| 756 | g_free(t->pathname); |
| 757 | g_free(t); |
| 758 | return NULL; |
| 759 | } |
| 760 | |
| 761 | //get control tracefile info |
| 762 | getControlFileInfo(t,control); |
| 763 | /* |
| 764 | if(getControlFileInfo(t,control)) { |
| 765 | g_ptr_array_free(t->facilities, TRUE); |
| 766 | g_ptr_array_free(t->per_cpu_tracefiles, TRUE); |
| 767 | g_ptr_array_free(t->control_tracefiles, TRUE); |
| 768 | g_free(sys_description); |
| 769 | g_free(t->pathname); |
| 770 | g_free(t); |
| 771 | return NULL; |
| 772 | }*/ // With fatal error |
| 773 | |
| 774 | //get cpu tracefile info |
| 775 | if(getCpuFileInfo(t,cpu)) { |
| 776 | g_ptr_array_free(t->facilities, TRUE); |
| 777 | g_ptr_array_free(t->per_cpu_tracefiles, TRUE); |
| 778 | g_ptr_array_free(t->control_tracefiles, TRUE); |
| 779 | g_free(sys_description); |
| 780 | g_free(t->pathname); |
| 781 | g_free(t); |
| 782 | return NULL; |
| 783 | } |
| 784 | |
| 785 | return t; |
| 786 | } |
| 787 | |
| 788 | char * ltt_trace_name(LttTrace *t) |
| 789 | { |
| 790 | return t->pathname; |
| 791 | } |
| 792 | |
| 793 | |
| 794 | /****************************************************************************** |
| 795 | * When we copy a trace, we want all the opening actions to happen again : |
| 796 | * the trace will be reopened and totally independant from the original. |
| 797 | * That's why we call ltt_trace_open. |
| 798 | *****************************************************************************/ |
| 799 | LttTrace *ltt_trace_copy(LttTrace *self) |
| 800 | { |
| 801 | return ltt_trace_open(self->pathname); |
| 802 | } |
| 803 | |
| 804 | void ltt_trace_close(LttTrace *t) |
| 805 | { |
| 806 | unsigned int i; |
| 807 | LttTracefile * tf; |
| 808 | LttFacility * f; |
| 809 | |
| 810 | g_free(t->pathname); |
| 811 | |
| 812 | //free system_description |
| 813 | g_free(t->system_description->description); |
| 814 | g_free(t->system_description->node_name); |
| 815 | g_free(t->system_description->domain_name); |
| 816 | g_free(t->system_description->kernel_name); |
| 817 | g_free(t->system_description->kernel_release); |
| 818 | g_free(t->system_description->kernel_version); |
| 819 | g_free(t->system_description->machine); |
| 820 | g_free(t->system_description->processor); |
| 821 | g_free(t->system_description->hardware_platform); |
| 822 | g_free(t->system_description->operating_system); |
| 823 | g_free(t->system_description); |
| 824 | |
| 825 | //free control_tracefiles |
| 826 | for(i=0;i<t->control_tracefile_number;i++){ |
| 827 | tf = (LttTracefile*)g_ptr_array_index(t->control_tracefiles,i); |
| 828 | ltt_tracefile_close(tf); |
| 829 | } |
| 830 | g_ptr_array_free(t->control_tracefiles, TRUE); |
| 831 | |
| 832 | //free per_cpu_tracefiles |
| 833 | for(i=0;i<t->per_cpu_tracefile_number;i++){ |
| 834 | tf = (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles,i); |
| 835 | ltt_tracefile_close(tf); |
| 836 | } |
| 837 | g_ptr_array_free(t->per_cpu_tracefiles, TRUE); |
| 838 | |
| 839 | //free facilities |
| 840 | for(i=0;i<t->facility_number;i++){ |
| 841 | f = (LttFacility*)g_ptr_array_index(t->facilities,i); |
| 842 | ltt_facility_close(f); |
| 843 | } |
| 844 | g_ptr_array_free(t->facilities, TRUE); |
| 845 | |
| 846 | g_free(t); |
| 847 | |
| 848 | g_blow_chunks(); |
| 849 | } |
| 850 | |
| 851 | |
| 852 | /***************************************************************************** |
| 853 | *Get the system description of the trace |
| 854 | ****************************************************************************/ |
| 855 | |
| 856 | LttSystemDescription *ltt_trace_system_description(LttTrace *t) |
| 857 | { |
| 858 | return t->system_description; |
| 859 | } |
| 860 | |
| 861 | /***************************************************************************** |
| 862 | * The following functions discover the facilities of the trace |
| 863 | ****************************************************************************/ |
| 864 | |
| 865 | unsigned ltt_trace_facility_number(LttTrace *t) |
| 866 | { |
| 867 | return (unsigned)(t->facility_number); |
| 868 | } |
| 869 | |
| 870 | LttFacility *ltt_trace_facility_get(LttTrace *t, unsigned i) |
| 871 | { |
| 872 | return (LttFacility*)g_ptr_array_index(t->facilities, i); |
| 873 | } |
| 874 | |
| 875 | /***************************************************************************** |
| 876 | *Function name |
| 877 | * ltt_trace_facility_find : find facilities in the trace |
| 878 | *Input params |
| 879 | * t : the trace |
| 880 | * name : facility name |
| 881 | *Output params |
| 882 | * position : position of the facility in the trace |
| 883 | *Return value |
| 884 | * : the number of facilities |
| 885 | ****************************************************************************/ |
| 886 | |
| 887 | unsigned ltt_trace_facility_find(LttTrace *t, char *name, unsigned *position) |
| 888 | { |
| 889 | unsigned int i, count=0; |
| 890 | LttFacility * f; |
| 891 | for(i=0;i<t->facility_number;i++){ |
| 892 | f = (LttFacility*)g_ptr_array_index(t->facilities, i); |
| 893 | if(strcmp(f->name,name)==0){ |
| 894 | count++; |
| 895 | if(count==1) *position = i; |
| 896 | }else{ |
| 897 | if(count) break; |
| 898 | } |
| 899 | } |
| 900 | return count; |
| 901 | } |
| 902 | |
| 903 | /***************************************************************************** |
| 904 | * Functions to discover all the event types in the trace |
| 905 | ****************************************************************************/ |
| 906 | |
| 907 | unsigned ltt_trace_eventtype_number(LttTrace *t) |
| 908 | { |
| 909 | unsigned int i; |
| 910 | unsigned count = 0; |
| 911 | unsigned int num = t->facility_number; |
| 912 | LttFacility * f; |
| 913 | |
| 914 | for(i=0;i<num;i++){ |
| 915 | f = (LttFacility*)g_ptr_array_index(t->facilities, i); |
| 916 | count += f->event_number; |
| 917 | } |
| 918 | return count; |
| 919 | } |
| 920 | |
| 921 | /* FIXME : performances could be improved with a better design for this |
| 922 | * function : sequential search through a container has never been the |
| 923 | * best on the critical path. */ |
| 924 | LttFacility * ltt_trace_facility_by_id(LttTrace * trace, unsigned id) |
| 925 | { |
| 926 | LttFacility * facility = NULL; |
| 927 | unsigned int i; |
| 928 | unsigned int num = trace->facility_number; |
| 929 | GPtrArray *facilities = trace->facilities; |
| 930 | |
| 931 | for(i=0;unlikely(i<num);){ |
| 932 | LttFacility *iter_facility = |
| 933 | (LttFacility*) g_ptr_array_index(facilities,i); |
| 934 | unsigned base_id = iter_facility->base_id; |
| 935 | |
| 936 | if(likely(id >= base_id && |
| 937 | id < base_id + iter_facility->event_number)) { |
| 938 | facility = iter_facility; |
| 939 | break; |
| 940 | } else { |
| 941 | i++; |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | return facility; |
| 946 | } |
| 947 | |
| 948 | LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned evId) |
| 949 | { |
| 950 | LttEventType *event_type; |
| 951 | |
| 952 | LttFacility * f; |
| 953 | f = ltt_trace_facility_by_id(t,evId); |
| 954 | |
| 955 | if(unlikely(!f)) event_type = NULL; |
| 956 | else event_type = f->events[evId - f->base_id]; |
| 957 | |
| 958 | return event_type; |
| 959 | } |
| 960 | |
| 961 | /***************************************************************************** |
| 962 | *There is one "per cpu" tracefile for each CPU, numbered from 0 to |
| 963 | *the maximum number of CPU in the system. When the number of CPU installed |
| 964 | *is less than the maximum, some positions are unused. There are also a |
| 965 | *number of "control" tracefiles (facilities, interrupts...). |
| 966 | ****************************************************************************/ |
| 967 | unsigned ltt_trace_control_tracefile_number(LttTrace *t) |
| 968 | { |
| 969 | return t->control_tracefile_number; |
| 970 | } |
| 971 | |
| 972 | unsigned ltt_trace_per_cpu_tracefile_number(LttTrace *t) |
| 973 | { |
| 974 | return t->per_cpu_tracefile_number; |
| 975 | } |
| 976 | |
| 977 | /***************************************************************************** |
| 978 | *It is possible to search for the tracefiles by name or by CPU position. |
| 979 | *The index within the tracefiles of the same type is returned if found |
| 980 | *and a negative value otherwise. |
| 981 | ****************************************************************************/ |
| 982 | |
| 983 | int ltt_trace_control_tracefile_find(LttTrace *t, const gchar *name) |
| 984 | { |
| 985 | LttTracefile * tracefile; |
| 986 | unsigned int i; |
| 987 | for(i=0;i<t->control_tracefile_number;i++){ |
| 988 | tracefile = (LttTracefile*)g_ptr_array_index(t->control_tracefiles, i); |
| 989 | if(strcmp(tracefile->name, name)==0)break; |
| 990 | } |
| 991 | if(i == t->control_tracefile_number) return -1; |
| 992 | return i; |
| 993 | } |
| 994 | |
| 995 | /* not really useful. We just have to know that cpu tracefiles |
| 996 | * comes before control tracefiles. |
| 997 | */ |
| 998 | int ltt_trace_per_cpu_tracefile_find(LttTrace *t, const gchar *name) |
| 999 | { |
| 1000 | LttTracefile * tracefile; |
| 1001 | unsigned int i; |
| 1002 | for(i=0;i<t->per_cpu_tracefile_number;i++){ |
| 1003 | tracefile = (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles, i); |
| 1004 | if(strcmp(tracefile->name, name)==0)break; |
| 1005 | } |
| 1006 | if(i == t->per_cpu_tracefile_number) return -1; |
| 1007 | return i; |
| 1008 | } |
| 1009 | |
| 1010 | /***************************************************************************** |
| 1011 | *Get a specific tracefile |
| 1012 | ****************************************************************************/ |
| 1013 | |
| 1014 | LttTracefile *ltt_trace_control_tracefile_get(LttTrace *t, unsigned i) |
| 1015 | { |
| 1016 | return (LttTracefile*)g_ptr_array_index(t->control_tracefiles, i); |
| 1017 | } |
| 1018 | |
| 1019 | LttTracefile *ltt_trace_per_cpu_tracefile_get(LttTrace *t, unsigned i) |
| 1020 | { |
| 1021 | return (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles, i); |
| 1022 | } |
| 1023 | |
| 1024 | /***************************************************************************** |
| 1025 | * Get the start time and end time of the trace |
| 1026 | ****************************************************************************/ |
| 1027 | |
| 1028 | static void ltt_tracefile_time_span_get(LttTracefile *tf, |
| 1029 | LttTime *start, LttTime *end) |
| 1030 | { |
| 1031 | struct ltt_block_start_header * header; |
| 1032 | int err; |
| 1033 | |
| 1034 | err = map_block(tf, 0); |
| 1035 | if(unlikely(err)) { |
| 1036 | g_error("Can not map block"); |
| 1037 | *start = { 0xFFFFFFFF, 0xFFFFFFFF }; |
| 1038 | } else |
| 1039 | *start = tf->buffer.begin.timestamp; |
| 1040 | |
| 1041 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
| 1042 | if(unlikely(err)) { |
| 1043 | g_error("Can not map block"); |
| 1044 | *end = { 0, 0 }; |
| 1045 | } else |
| 1046 | *end = tf->buffer.end.timestamp; |
| 1047 | } |
| 1048 | |
| 1049 | struct tracefile_time_span_get_args { |
| 1050 | LttTrace *t; |
| 1051 | LttTime *start; |
| 1052 | LttTime *end; |
| 1053 | }; |
| 1054 | |
| 1055 | static void group_time_span_get(GQuark name, gpointer data, gpointer user_data) |
| 1056 | { |
| 1057 | struct tracefile_time_span_get_args *args = |
| 1058 | (struct tracefile_time_span_get_args*)user_data; |
| 1059 | |
| 1060 | GArray *group = (GArray *)data; |
| 1061 | int i; |
| 1062 | LttTracefile *tf; |
| 1063 | LttTime tmp_start; |
| 1064 | LttTime tmp_end; |
| 1065 | |
| 1066 | for(i=0; i<group->len; i++) { |
| 1067 | tf = &g_array_index (group, LttTracefile, i); |
| 1068 | if(tf->cpu_online) { |
| 1069 | ltt_tracefile_time_span_get(tf, &tmp_start, &tmp_end); |
| 1070 | if(ltt_time_compare(*args->start, tmp_start)>0) *args->start = tmp_start; |
| 1071 | if(ltt_time_compare(*args->end, tmp_end)<0) *args->end = tmp_end; |
| 1072 | } |
| 1073 | } |
| 1074 | } |
| 1075 | |
| 1076 | void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end) |
| 1077 | { |
| 1078 | LttTime min_start = { 0xFFFFFFFF, 0xFFFFFFFF }; |
| 1079 | LttTime max_end = { 0, 0 }; |
| 1080 | struct tracefile_time_span_get_args args = { t, &min_start, &max_end }; |
| 1081 | |
| 1082 | g_datalist_foreach(t->tracefiles, &group_time_span_get, &args); |
| 1083 | |
| 1084 | if(start != NULL) *start = min_start; |
| 1085 | if(end != NULL) *end = max_end; |
| 1086 | |
| 1087 | } |
| 1088 | |
| 1089 | |
| 1090 | /***************************************************************************** |
| 1091 | *Get the name of a tracefile |
| 1092 | ****************************************************************************/ |
| 1093 | |
| 1094 | char *ltt_tracefile_name(LttTracefile *tf) |
| 1095 | { |
| 1096 | return tf->name; |
| 1097 | } |
| 1098 | |
| 1099 | /***************************************************************************** |
| 1100 | * Get the number of blocks in the tracefile |
| 1101 | ****************************************************************************/ |
| 1102 | |
| 1103 | unsigned ltt_tracefile_block_number(LttTracefile *tf) |
| 1104 | { |
| 1105 | return tf->block_number; |
| 1106 | } |
| 1107 | |
| 1108 | |
| 1109 | /* Seek to the first event in a tracefile that has a time equal or greater than |
| 1110 | * the time passed in parameter. |
| 1111 | * |
| 1112 | * If the time parameter is outside the tracefile time span, seek to the first |
| 1113 | * or the last event of the tracefile. |
| 1114 | * |
| 1115 | * If the time parameter is before the first event, we have to seek specially to |
| 1116 | * there. |
| 1117 | * |
| 1118 | * If the time is after the end of the trace, get the last event. |
| 1119 | * |
| 1120 | * Do a binary search to find the right block, then a sequential search in the |
| 1121 | * block to find the event. |
| 1122 | * |
| 1123 | * In the special case where the time requested fits inside a block that has no |
| 1124 | * event corresponding to the requested time, the first event of the next block |
| 1125 | * will be seeked. |
| 1126 | * |
| 1127 | * IMPORTANT NOTE : // FIXME everywhere... |
| 1128 | * |
| 1129 | * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time : |
| 1130 | * you will jump over an event if you do. |
| 1131 | * |
| 1132 | * */ |
| 1133 | |
| 1134 | void ltt_tracefile_seek_time(LttTracefile *tf, LttTime time) |
| 1135 | { |
| 1136 | int err; |
| 1137 | unsigned int block_num, high, low; |
| 1138 | |
| 1139 | /* seek at the beginning of trace */ |
| 1140 | err = map_block(tf, 0); /* First block */ |
| 1141 | if(unlikely(err)) { |
| 1142 | g_error("Can not map block"); |
| 1143 | goto fail; |
| 1144 | } |
| 1145 | |
| 1146 | /* If the time is lower or equal the beginning of the trace, |
| 1147 | * go to the first event. */ |
| 1148 | if(ltt_time_compare(time, tf->buffer.start.timestamp) <= 0) { |
| 1149 | ltt_tracefile_read(tf) |
| 1150 | goto found; /* There is either no event in the trace or the event points |
| 1151 | to the first event in the trace */ |
| 1152 | } |
| 1153 | |
| 1154 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
| 1155 | if(unlikely(err)) { |
| 1156 | g_error("Can not map block"); |
| 1157 | goto fail; |
| 1158 | } |
| 1159 | |
| 1160 | /* If the time is after the end of the trace, get the last event. */ |
| 1161 | if(ltt_time_compare(time, tf->buffer.end.timestamp) >= 0) { |
| 1162 | /* While the ltt_tracefile_read_event doesn't return NULL, continue reading |
| 1163 | */ |
| 1164 | while(ltt_tracefile_read(tf)); |
| 1165 | goto found; |
| 1166 | } |
| 1167 | |
| 1168 | /* Binary search the block */ |
| 1169 | high = tf->num_blocks - 1; |
| 1170 | low = 0; |
| 1171 | |
| 1172 | while(1) { |
| 1173 | block_num = ((high-low) / 2) + low; |
| 1174 | |
| 1175 | err = map_block(tf, block_num); |
| 1176 | if(unlikely(err)) { |
| 1177 | g_error("Can not map block"); |
| 1178 | goto fail; |
| 1179 | } |
| 1180 | if(ltt_time_compare(time, tf->buffer.start.timestamp) < 0) { |
| 1181 | /* go to lower part */ |
| 1182 | high = block_num; |
| 1183 | } else if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
| 1184 | /* go to higher part */ |
| 1185 | low = block_num; |
| 1186 | } else {/* The event is right in the buffer! |
| 1187 | (or in the next buffer first event) */ |
| 1188 | while(1) { |
| 1189 | ltt_tracefile_read(tf); |
| 1190 | if(ltt_time_compare(time, tf->event.event_time) >= 0) |
| 1191 | break; |
| 1192 | } |
| 1193 | goto found; |
| 1194 | } |
| 1195 | } |
| 1196 | |
| 1197 | found: |
| 1198 | |
| 1199 | return; |
| 1200 | |
| 1201 | /* Error handling */ |
| 1202 | fail: |
| 1203 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
| 1204 | g_quark_to_string(tf->name)); |
| 1205 | } |
| 1206 | |
| 1207 | |
| 1208 | int ltt_tracefile_seek_position(LttTracefile *tf, const LttEventPosition *ep) { |
| 1209 | |
| 1210 | int err; |
| 1211 | |
| 1212 | if(ep->tracefile != tf) { |
| 1213 | goto fail; |
| 1214 | } |
| 1215 | |
| 1216 | err = map_block(tf, ep->block); |
| 1217 | if(unlikely(err)) { |
| 1218 | g_error("Can not map block"); |
| 1219 | goto fail; |
| 1220 | } |
| 1221 | |
| 1222 | tf->event.offset = ep->offset; |
| 1223 | |
| 1224 | if(!ltt_tracefile_read(tf)) goto fail; |
| 1225 | |
| 1226 | return; |
| 1227 | |
| 1228 | fail: |
| 1229 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
| 1230 | g_quark_to_string(tf->name)); |
| 1231 | } |
| 1232 | |
| 1233 | |
| 1234 | |
| 1235 | /***************************************************************************** |
| 1236 | * Seek to the first event with position equal or larger to ep |
| 1237 | * |
| 1238 | * Modified by Mathieu Desnoyers to used faster offset position instead of |
| 1239 | * re-reading the whole buffer. |
| 1240 | ****************************************************************************/ |
| 1241 | |
| 1242 | void ltt_tracefile_seek_position(LttTracefile *t, const LttEventPosition *ep) |
| 1243 | { |
| 1244 | //if we are at the right place, just return |
| 1245 | if(likely(t->which_block == ep->block_num && t->which_event == ep->event_num)) |
| 1246 | return; |
| 1247 | |
| 1248 | if(likely(t->which_block == ep->block_num)) updateTracefile(t); |
| 1249 | else readBlock(t,ep->block_num); |
| 1250 | //event offset is available |
| 1251 | if(likely(ep->old_position)){ |
| 1252 | int err; |
| 1253 | |
| 1254 | t->which_event = ep->event_num; |
| 1255 | t->cur_event_pos = t->buffer + ep->event_offset; |
| 1256 | t->prev_event_time = ep->event_time; |
| 1257 | t->current_event_time = ep->event_time; |
| 1258 | t->cur_heart_beat_number = ep->heart_beat_number; |
| 1259 | t->cur_cycle_count = ep->event_cycle_count; |
| 1260 | |
| 1261 | /* This is a workaround for fast position seek */ |
| 1262 | t->last_event_pos = ep->last_event_pos; |
| 1263 | t->prev_block_end_time = ep->prev_block_end_time; |
| 1264 | t->prev_event_time = ep->prev_event_time; |
| 1265 | t->pre_cycle_count = ep->pre_cycle_count; |
| 1266 | t->count = ep->count; |
| 1267 | t->overflow_nsec = ep->overflow_nsec; |
| 1268 | t->last_heartbeat = ep->last_heartbeat; |
| 1269 | /* end of workaround */ |
| 1270 | |
| 1271 | //update the fields of the current event and go to the next event |
| 1272 | err = skipEvent(t); |
| 1273 | if(unlikely(err == ERANGE)) g_error("event id is out of range\n"); |
| 1274 | |
| 1275 | return; |
| 1276 | } |
| 1277 | |
| 1278 | //only block number and event index are available |
| 1279 | //MD: warning : this is slow! |
| 1280 | g_warning("using slow O(n) tracefile seek position"); |
| 1281 | |
| 1282 | LttEvent event; |
| 1283 | while(likely(t->which_event < ep->event_num)) ltt_tracefile_read(t, &event); |
| 1284 | |
| 1285 | return; |
| 1286 | } |
| 1287 | |
| 1288 | /* Calculate the real event time based on the buffer boundaries */ |
| 1289 | LttTime ltt_interpolate_time(LttTracefile *tf, LttEvent *event) |
| 1290 | { |
| 1291 | LttTime time; |
| 1292 | |
| 1293 | g_assert(t->trace->has_tsc); |
| 1294 | |
| 1295 | time = ltt_time_from_uint64( |
| 1296 | (guint64)tf->buffer.tsc*tf->buffer.nsecs_per_cycle); |
| 1297 | time = ltt_time_add(tf->buffer.begin.timestamp, time); |
| 1298 | |
| 1299 | return time; |
| 1300 | } |
| 1301 | |
| 1302 | |
| 1303 | /***************************************************************************** |
| 1304 | *Function name |
| 1305 | * ltt_tracefile_read : Read the next event in the tracefile |
| 1306 | *Input params |
| 1307 | * t : tracefile |
| 1308 | *Return value |
| 1309 | * LttEvent * : an event to be processed |
| 1310 | * Note : it points to the current tf->event. It will be overwritten |
| 1311 | * by the next call to ltt_tracefile_read or any map_block. |
| 1312 | * |
| 1313 | * Returns NULL on end of trace (or error). |
| 1314 | * |
| 1315 | * |
| 1316 | * This function does make the tracefile event structure point to the event |
| 1317 | * currently pointed to by the |
| 1318 | ****************************************************************************/ |
| 1319 | |
| 1320 | LttEvent *ltt_tracefile_read(LttTracefile *tf) |
| 1321 | { |
| 1322 | int err; |
| 1323 | LttFacility *f; |
| 1324 | void * pos; |
| 1325 | |
| 1326 | /* Skip the current event to go to the next, or point to the |
| 1327 | * t->buffer.head + t->buffer.lost_size if we were on the last |
| 1328 | * event of a buffer. |
| 1329 | */ |
| 1330 | err = ltt_seek_next_event(tf); |
| 1331 | if(unlikely(err == ERANGE)) { |
| 1332 | g_error("event id is out of range\n"); |
| 1333 | return NULL; |
| 1334 | } |
| 1335 | |
| 1336 | pos = tf->event.offset; |
| 1337 | |
| 1338 | /* Are we at the end of the buffer ? */ |
| 1339 | if(unlikely(pos == tf->buffer.head + tf->buffer.lost_size)) { |
| 1340 | if(unlikely(tf->buffer.index == tf->num_blocks-1)){ /* end of trace ? */ |
| 1341 | return NULL; |
| 1342 | } else { |
| 1343 | /* get next block */ |
| 1344 | err = map_block(tf, tf->buffer.index + 1); |
| 1345 | if(unlikely(err)) { |
| 1346 | g_error("Can not map block"); |
| 1347 | return NULL; |
| 1348 | } |
| 1349 | pos = tf->event.offset; |
| 1350 | } |
| 1351 | } |
| 1352 | |
| 1353 | /* Read event header */ |
| 1354 | |
| 1355 | //TODO align |
| 1356 | |
| 1357 | if(tf->trace->has_tsc) { |
| 1358 | event->time.timestamp = ltt_get_uint32(LTT_GET_BO(t), |
| 1359 | tf->cur_event_pos); |
| 1360 | /* 32 bits -> 64 bits tsc */ |
| 1361 | if(event->time.timestamp < (0xFFFFFFFFULL&tf->buffer.tsc)) { |
| 1362 | tf->buffer.tsc = ((tf->buffer.tsc&0xFFFFFFFF00000000ULL) |
| 1363 | + 0x100000000ULL) |
| 1364 | | (guint64)event->time.timestamp; |
| 1365 | |
| 1366 | event->event_time = ltt_interpolate_time(tf, event); |
| 1367 | } else { |
| 1368 | /* no overflow */ |
| 1369 | tf->buffer.tsc = (tf->buffer.tsc&0xFFFFFFFF00000000ULL) |
| 1370 | | (guint64)event->time.timestamp; |
| 1371 | } |
| 1372 | pos += sizeof(uint32); |
| 1373 | } else { |
| 1374 | event->time.delta = ltt_get_uint32(LTT_GET_BO(tf), |
| 1375 | tf->cur_event_pos); |
| 1376 | tf->buffer.tsc = 0; |
| 1377 | |
| 1378 | event->event_time = ltt_time_add(tf->buffer.begin.timestamp, |
| 1379 | event->time_delta); |
| 1380 | pos += sizeof(uint32); |
| 1381 | } |
| 1382 | |
| 1383 | event->facility_id = ltt_get_uint8(LTT_GET_BO(tf), |
| 1384 | tf->cur_event_pos); |
| 1385 | pos += sizeof(uint8); |
| 1386 | |
| 1387 | event->event_id = ltt_get_uint8(LTT_GET_BO(tf), |
| 1388 | tf->cur_event_pos); |
| 1389 | pos += sizeof(uint8); |
| 1390 | |
| 1391 | event->data = tf->cur_event_pos + EVENT_HEADER_SIZE; |
| 1392 | |
| 1393 | event->data = pos; |
| 1394 | |
| 1395 | /* do event specific operation */ |
| 1396 | |
| 1397 | /* do something if its an heartbeat event : increment the heartbeat count */ |
| 1398 | if(event->facility_id != 0) { /* except core */ |
| 1399 | f = (LttFacility*)g_ptr_array_index(tf->trace->facilities, |
| 1400 | event->facility_id); |
| 1401 | g_assert(f != NULL); |
| 1402 | |
| 1403 | if(unlikely(ltt_facility_name(f) |
| 1404 | != LTT_FACILITY_NAME_HEARTBEAT)) { |
| 1405 | LttEventType *et = ltt_facility_eventtype_get_by_name(f, |
| 1406 | LTT_EVENT_NAME_HEARTBEAT); |
| 1407 | if(et->id == event->event_id) |
| 1408 | t->cur_heart_beat_number++; |
| 1409 | |
| 1410 | } |
| 1411 | } |
| 1412 | |
| 1413 | return event; |
| 1414 | } |
| 1415 | |
| 1416 | /**************************************************************************** |
| 1417 | *Function name |
| 1418 | * readFile : wrap function to read from a file |
| 1419 | *Input Params |
| 1420 | * fd : file descriptor |
| 1421 | * buf : buf to contain the content |
| 1422 | * size : number of bytes to be read |
| 1423 | * mesg : message to be printed if some thing goes wrong |
| 1424 | *return value |
| 1425 | * 0 : success |
| 1426 | * EIO : can not read from the file |
| 1427 | ****************************************************************************/ |
| 1428 | #if 0 |
| 1429 | int readFile(int fd, void * buf, size_t size, char * mesg) |
| 1430 | { |
| 1431 | ssize_t nbBytes = read(fd, buf, size); |
| 1432 | |
| 1433 | if((size_t)nbBytes != size) { |
| 1434 | if(nbBytes < 0) { |
| 1435 | perror("Error in readFile : "); |
| 1436 | } else { |
| 1437 | g_warning("%s",mesg); |
| 1438 | } |
| 1439 | return EIO; |
| 1440 | } |
| 1441 | return 0; |
| 1442 | } |
| 1443 | #endif //0 |
| 1444 | |
| 1445 | /**************************************************************************** |
| 1446 | *Function name |
| 1447 | * map_block : map a block from the file |
| 1448 | *Input Params |
| 1449 | * lttdes : ltt trace file |
| 1450 | * whichBlock : the block which will be read |
| 1451 | *return value |
| 1452 | * 0 : success |
| 1453 | * EINVAL : lseek fail |
| 1454 | * EIO : can not read from the file |
| 1455 | ****************************************************************************/ |
| 1456 | |
| 1457 | static int map_block(LttTracefile * tf, int block_num) |
| 1458 | { |
| 1459 | struct ltt_block_start_header *header; |
| 1460 | |
| 1461 | g_assert(block_num < tf->num_blocks); |
| 1462 | |
| 1463 | if(tf->buffer.head != NULL) |
| 1464 | munmap(tf->buffer.head, tf->buf_size); |
| 1465 | |
| 1466 | /* Multiple of pages aligned head */ |
| 1467 | tf->buffer.head = mmap(0, tf->block_size, PROT_READ, tf->fd, |
| 1468 | (off_t)tf->block_size * (off_t)block_num); |
| 1469 | |
| 1470 | if(tf->buffer.head == NULL) { |
| 1471 | perror("Error in allocating memory for buffer of tracefile %s\n", fileName); |
| 1472 | goto map_error; |
| 1473 | } |
| 1474 | g_assert(tf->buffer.head & (8-1) == 0); // make sure it's aligned. |
| 1475 | |
| 1476 | |
| 1477 | tf->buffer.index = block_num; |
| 1478 | |
| 1479 | header = (struct ltt_block_start_header*)tf->buffer.head; |
| 1480 | |
| 1481 | tf->buffer.begin.timestamp = ltt_get_uint64(LTT_GET_BO(tf), |
| 1482 | header->begin.timestamp) |
| 1483 | * NSEC_PER_USEC; |
| 1484 | tf->buffer.begin.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
| 1485 | header->begin.cycle_count); |
| 1486 | tf->buffer.end.timestamp = ltt_get_uint64(LTT_GET_BO(tf), |
| 1487 | header->end.timestamp) |
| 1488 | * NSEC_PER_USEC; |
| 1489 | tf->buffer.end.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
| 1490 | header->end.cycle_count); |
| 1491 | tf->buffer.lost_size = ltt_get_uint32(LTT_GET_BO(tf), |
| 1492 | header->lost_size); |
| 1493 | |
| 1494 | tf->buffer.tsc = tf->buffer.begin.cycle_count; |
| 1495 | |
| 1496 | /* FIXME |
| 1497 | * eventually support variable buffer size : will need a partial pre-read of |
| 1498 | * the headers to create an index when we open the trace... eventually. */ |
| 1499 | g_assert(tf->block_size == ltt_get_uint32(header->buf_size)); |
| 1500 | |
| 1501 | /* Now that the buffer is mapped, calculate the time interpolation for the |
| 1502 | * block. */ |
| 1503 | |
| 1504 | tf->buffer.nsecs_per_cycle = calc_nsecs_per_cycle(&tf->buffer); |
| 1505 | |
| 1506 | /* Make the current event point to the beginning of the buffer : |
| 1507 | * it means that the event read must get the first event. */ |
| 1508 | tf->event.tracefile = tf; |
| 1509 | tf->event.block = block_num; |
| 1510 | tf->event.offset = tf->buffer.head; |
| 1511 | |
| 1512 | return 0; |
| 1513 | |
| 1514 | map_error: |
| 1515 | return -errno; |
| 1516 | |
| 1517 | } |
| 1518 | |
| 1519 | /***************************************************************************** |
| 1520 | *Function name |
| 1521 | * updateTracefile : reinitialize the info of the block which is already |
| 1522 | * in the buffer |
| 1523 | *Input params |
| 1524 | * tf : tracefile |
| 1525 | ****************************************************************************/ |
| 1526 | |
| 1527 | void updateTracefile(LttTracefile * tf) |
| 1528 | { |
| 1529 | tf->which_event = 1; |
| 1530 | tf->cur_event_pos = tf->buffer; |
| 1531 | tf->current_event_time = getEventTime(tf); |
| 1532 | tf->cur_heart_beat_number = 0; |
| 1533 | |
| 1534 | tf->prev_event_time.tv_sec = 0; |
| 1535 | tf->prev_event_time.tv_nsec = 0; |
| 1536 | tf->count = 0; |
| 1537 | |
| 1538 | tf->overflow_nsec = |
| 1539 | (-((double)ltt_get_uint64(tf->trace->reverse_byte_order, |
| 1540 | &tf->a_block_start->cycle_count)) |
| 1541 | * tf->nsec_per_cycle); |
| 1542 | |
| 1543 | } |
| 1544 | |
| 1545 | /* Take the tf current event offset and use the event facility id and event id |
| 1546 | * to figure out where is the next event offset. |
| 1547 | * |
| 1548 | * This is an internal function not aiming at being used elsewhere : it will |
| 1549 | * not jump over the current block limits. Please consider using |
| 1550 | * ltt_tracefile_read to do this. |
| 1551 | * |
| 1552 | * Returns 0 on success |
| 1553 | * ERANGE if we are at the end of the buffer. |
| 1554 | */ |
| 1555 | static int ltt_seek_next_event(LttTracefile *tf) |
| 1556 | { |
| 1557 | void *pos; |
| 1558 | |
| 1559 | /* seek over the buffer header if we are at the buffer start */ |
| 1560 | if(tf->event.offset == tf->buffer.head) { |
| 1561 | tf->event.offset += sizeof(struct ltt_block_start_header); |
| 1562 | goto found; |
| 1563 | } |
| 1564 | |
| 1565 | /* if we are at the end of a buffer, generate an error, not supposed to |
| 1566 | * happen. */ |
| 1567 | if(tf->event.offset == tf->buffer.head + tf->buffer.lost_size) |
| 1568 | goto error; |
| 1569 | |
| 1570 | pos = tf->event.data; |
| 1571 | |
| 1572 | pos += ltt_facility_get_event_size(tf->event.facility_id, tf->event.event_id); |
| 1573 | |
| 1574 | tf->event.offset = pos; |
| 1575 | |
| 1576 | found: |
| 1577 | return 0; |
| 1578 | |
| 1579 | error: |
| 1580 | g_error("Error in ltt_seek_next_event for tracefile %s", |
| 1581 | g_quark_to_string(tf->name)); |
| 1582 | return ERANGE; |
| 1583 | } |
| 1584 | |
| 1585 | |
| 1586 | /***************************************************************************** |
| 1587 | *Function name |
| 1588 | * calc_nsecs_per_cycle : calculate nsecs per cycle for current block |
| 1589 | *Input Params |
| 1590 | * t : tracefile |
| 1591 | ****************************************************************************/ |
| 1592 | |
| 1593 | static double calc_nsecs_per_cycle(LttTracefile * t) |
| 1594 | { |
| 1595 | LttTime lBufTotalTime; /* Total time for this buffer */ |
| 1596 | double lBufTotalNSec; /* Total time for this buffer in nsecs */ |
| 1597 | LttCycleCount lBufTotalCycle;/* Total cycles for this buffer */ |
| 1598 | |
| 1599 | /* Calculate the total time for this buffer */ |
| 1600 | lBufTotalTime = ltt_time_sub( |
| 1601 | ltt_get_time(t->buffer.end.timestamp), |
| 1602 | ltt_get_time(t->buffer.begin.timestamp)); |
| 1603 | |
| 1604 | /* Calculate the total cycles for this bufffer */ |
| 1605 | lBufTotalCycle = t->buffer.end.cycle_count; |
| 1606 | lBufTotalCycle -= t->buffer.start.cycle_count; |
| 1607 | |
| 1608 | /* Convert the total time to double */ |
| 1609 | lBufTotalNSec = ltt_time_to_double(lBufTotalTime); |
| 1610 | |
| 1611 | return lBufTotalNSec / (double)lBufTotalCycle; |
| 1612 | |
| 1613 | } |
| 1614 | |
| 1615 | /***************************************************************************** |
| 1616 | *Function name |
| 1617 | * setFieldsOffset : set offset of the fields |
| 1618 | *Input params |
| 1619 | * tracefile : opened trace file |
| 1620 | * evT : the event type |
| 1621 | * evD : event data, it may be NULL |
| 1622 | ****************************************************************************/ |
| 1623 | |
| 1624 | void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace* t) |
| 1625 | { |
| 1626 | LttField * rootFld = evT->root_field; |
| 1627 | // rootFld->base_address = evD; |
| 1628 | |
| 1629 | if(likely(rootFld)) |
| 1630 | rootFld->field_size = getFieldtypeSize(tf, evT, 0,0,rootFld, evD,t); |
| 1631 | } |
| 1632 | |
| 1633 | /***************************************************************************** |
| 1634 | *Function name |
| 1635 | * getFieldtypeSize: get the size of the field type (primitive type) |
| 1636 | *Input params |
| 1637 | * tracefile : opened trace file |
| 1638 | * evT : event type |
| 1639 | * offsetRoot : offset from the root |
| 1640 | * offsetParent : offset from the parrent |
| 1641 | * fld : field |
| 1642 | * evD : event data, it may be NULL |
| 1643 | *Return value |
| 1644 | * int : size of the field |
| 1645 | ****************************************************************************/ |
| 1646 | |
| 1647 | static inline gint getFieldtypeSize(LttTracefile * t, |
| 1648 | LttEventType * evT, gint offsetRoot, |
| 1649 | gint offsetParent, LttField * fld, void *evD, LttTrace *trace) |
| 1650 | { |
| 1651 | gint size, size1, element_number, i, offset1, offset2; |
| 1652 | LttType * type = fld->field_type; |
| 1653 | |
| 1654 | if(unlikely(t && evT->latest_block==t->which_block && |
| 1655 | evT->latest_event==t->which_event)){ |
| 1656 | size = fld->field_size; |
| 1657 | goto end_getFieldtypeSize; |
| 1658 | } else { |
| 1659 | /* This likely has been tested with gcov : half of them.. */ |
| 1660 | if(unlikely(fld->field_fixed == 1)){ |
| 1661 | /* tested : none */ |
| 1662 | if(unlikely(fld == evT->root_field)) { |
| 1663 | size = fld->field_size; |
| 1664 | goto end_getFieldtypeSize; |
| 1665 | } |
| 1666 | } |
| 1667 | |
| 1668 | /* From gcov profiling : half string, half struct, can we gain something |
| 1669 | * from that ? (Mathieu) */ |
| 1670 | switch(type->type_class) { |
| 1671 | case LTT_ARRAY: |
| 1672 | element_number = (int) type->element_number; |
| 1673 | if(fld->field_fixed == -1){ |
| 1674 | size = getFieldtypeSize(t, evT, offsetRoot, |
| 1675 | 0,fld->child[0], NULL, trace); |
| 1676 | if(size == 0){ //has string or sequence |
| 1677 | fld->field_fixed = 0; |
| 1678 | }else{ |
| 1679 | fld->field_fixed = 1; |
| 1680 | size *= element_number; |
| 1681 | } |
| 1682 | }else if(fld->field_fixed == 0){// has string or sequence |
| 1683 | size = 0; |
| 1684 | for(i=0;i<element_number;i++){ |
| 1685 | size += getFieldtypeSize(t, evT, offsetRoot+size,size, |
| 1686 | fld->child[0], evD+size, trace); |
| 1687 | } |
| 1688 | }else size = fld->field_size; |
| 1689 | if(unlikely(!evD)){ |
| 1690 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 1691 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 1692 | } |
| 1693 | |
| 1694 | break; |
| 1695 | |
| 1696 | case LTT_SEQUENCE: |
| 1697 | size1 = (int) ltt_type_size(trace, type); |
| 1698 | if(fld->field_fixed == -1){ |
| 1699 | fld->sequ_number_size = size1; |
| 1700 | fld->field_fixed = 0; |
| 1701 | size = getFieldtypeSize(t, evT, offsetRoot, |
| 1702 | 0,fld->child[0], NULL, trace); |
| 1703 | fld->element_size = size; |
| 1704 | }else{//0: sequence |
| 1705 | element_number = getIntNumber(t->trace->reverse_byte_order,size1,evD); |
| 1706 | type->element_number = element_number; |
| 1707 | if(fld->element_size > 0){ |
| 1708 | size = element_number * fld->element_size; |
| 1709 | }else{//sequence has string or sequence |
| 1710 | size = 0; |
| 1711 | for(i=0;i<element_number;i++){ |
| 1712 | size += getFieldtypeSize(t, evT, offsetRoot+size+size1,size+size1, |
| 1713 | fld->child[0], evD+size+size1, trace); |
| 1714 | } |
| 1715 | } |
| 1716 | size += size1; |
| 1717 | } |
| 1718 | if(unlikely(!evD)){ |
| 1719 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 1720 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 1721 | } |
| 1722 | |
| 1723 | break; |
| 1724 | |
| 1725 | case LTT_STRING: |
| 1726 | size = 0; |
| 1727 | if(fld->field_fixed == -1){ |
| 1728 | fld->field_fixed = 0; |
| 1729 | }else{//0: string |
| 1730 | /* Hope my implementation is faster than strlen (Mathieu) */ |
| 1731 | char *ptr=(char*)evD; |
| 1732 | size = 1; |
| 1733 | /* from gcov : many many strings are empty, make it the common case.*/ |
| 1734 | while(unlikely(*ptr != '\0')) { size++; ptr++; } |
| 1735 | //size = ptr - (char*)evD + 1; //include end : '\0' |
| 1736 | } |
| 1737 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 1738 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 1739 | |
| 1740 | break; |
| 1741 | |
| 1742 | case LTT_STRUCT: |
| 1743 | element_number = (int) type->element_number; |
| 1744 | size = 0; |
| 1745 | /* tested with gcov */ |
| 1746 | if(unlikely(fld->field_fixed == -1)){ |
| 1747 | offset1 = offsetRoot; |
| 1748 | offset2 = 0; |
| 1749 | for(i=0;i<element_number;i++){ |
| 1750 | size1=getFieldtypeSize(t, evT,offset1,offset2, |
| 1751 | fld->child[i], NULL, trace); |
| 1752 | if(likely(size1 > 0 && size >= 0)){ |
| 1753 | size += size1; |
| 1754 | if(likely(offset1 >= 0)) offset1 += size1; |
| 1755 | offset2 += size1; |
| 1756 | }else{ |
| 1757 | size = -1; |
| 1758 | offset1 = -1; |
| 1759 | offset2 = -1; |
| 1760 | } |
| 1761 | } |
| 1762 | if(unlikely(size == -1)){ |
| 1763 | fld->field_fixed = 0; |
| 1764 | size = 0; |
| 1765 | }else fld->field_fixed = 1; |
| 1766 | }else if(likely(fld->field_fixed == 0)){ |
| 1767 | offset1 = offsetRoot; |
| 1768 | offset2 = 0; |
| 1769 | for(i=0;unlikely(i<element_number);i++){ |
| 1770 | size=getFieldtypeSize(t,evT,offset1,offset2, |
| 1771 | fld->child[i],evD+offset2, trace); |
| 1772 | offset1 += size; |
| 1773 | offset2 += size; |
| 1774 | } |
| 1775 | size = offset2; |
| 1776 | }else size = fld->field_size; |
| 1777 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 1778 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 1779 | break; |
| 1780 | |
| 1781 | default: |
| 1782 | if(unlikely(fld->field_fixed == -1)){ |
| 1783 | size = (int) ltt_type_size(trace, type); |
| 1784 | fld->field_fixed = 1; |
| 1785 | }else size = fld->field_size; |
| 1786 | if(unlikely(!evD)){ |
| 1787 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 1788 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 1789 | } |
| 1790 | break; |
| 1791 | } |
| 1792 | } |
| 1793 | |
| 1794 | fld->offset_root = offsetRoot; |
| 1795 | fld->offset_parent = offsetParent; |
| 1796 | fld->field_size = size; |
| 1797 | |
| 1798 | end_getFieldtypeSize: |
| 1799 | |
| 1800 | return size; |
| 1801 | } |
| 1802 | |
| 1803 | |
| 1804 | /***************************************************************************** |
| 1805 | *Function name |
| 1806 | * getIntNumber : get an integer number |
| 1807 | *Input params |
| 1808 | * size : the size of the integer |
| 1809 | * evD : the event data |
| 1810 | *Return value |
| 1811 | * gint64 : a 64 bits integer |
| 1812 | ****************************************************************************/ |
| 1813 | |
| 1814 | gint64 getIntNumber(gboolean reverse_byte_order, int size, void *evD) |
| 1815 | { |
| 1816 | gint64 i; |
| 1817 | |
| 1818 | switch(size) { |
| 1819 | case 1: i = *((gint8*)evD); break; |
| 1820 | case 2: i = ltt_get_int16(reverse_byte_order, evD); break; |
| 1821 | case 4: i = ltt_get_int32(reverse_byte_order, evD); break; |
| 1822 | case 8: i = ltt_get_int64(reverse_byte_order, evD); break; |
| 1823 | default: i = ltt_get_int64(reverse_byte_order, evD); |
| 1824 | g_critical("getIntNumber : integer size %d unknown", size); |
| 1825 | break; |
| 1826 | } |
| 1827 | |
| 1828 | return i; |
| 1829 | } |
| 1830 | #if 0 |
| 1831 | /***************************************************************************** |
| 1832 | *Function name |
| 1833 | * getDataEndianType : get the data type size and endian type of the local |
| 1834 | * machine |
| 1835 | *Input params |
| 1836 | * size : size of data type |
| 1837 | * endian : endian type, little or big |
| 1838 | ****************************************************************************/ |
| 1839 | |
| 1840 | void getDataEndianType(LttArchSize * size, LttArchEndian * endian) |
| 1841 | { |
| 1842 | int i = 1; |
| 1843 | char c = (char) i; |
| 1844 | int sizeInt=sizeof(int), sizeLong=sizeof(long), sizePointer=sizeof(void *); |
| 1845 | |
| 1846 | if(c == 1) *endian = LTT_LITTLE_ENDIAN; |
| 1847 | else *endian = LTT_BIG_ENDIAN; |
| 1848 | |
| 1849 | if(sizeInt == 2 && sizeLong == 4 && sizePointer == 4) |
| 1850 | *size = LTT_LP32; |
| 1851 | else if(sizeInt == 4 && sizeLong == 4 && sizePointer == 4) |
| 1852 | *size = LTT_ILP32; |
| 1853 | else if(sizeInt == 4 && sizeLong == 8 && sizePointer == 8) |
| 1854 | *size = LTT_LP64; |
| 1855 | else if(sizeInt == 8 && sizeLong == 8 && sizePointer == 8) |
| 1856 | *size = LTT_ILP64; |
| 1857 | else *size = LTT_UNKNOWN; |
| 1858 | } |
| 1859 | #endif //0 |
| 1860 | /* get the node name of the system */ |
| 1861 | |
| 1862 | char * ltt_trace_system_description_node_name (LttSystemDescription * s) |
| 1863 | { |
| 1864 | return s->node_name; |
| 1865 | } |
| 1866 | |
| 1867 | |
| 1868 | /* get the domain name of the system */ |
| 1869 | |
| 1870 | char * ltt_trace_system_description_domain_name (LttSystemDescription * s) |
| 1871 | { |
| 1872 | return s->domain_name; |
| 1873 | } |
| 1874 | |
| 1875 | |
| 1876 | /* get the description of the system */ |
| 1877 | |
| 1878 | char * ltt_trace_system_description_description (LttSystemDescription * s) |
| 1879 | { |
| 1880 | return s->description; |
| 1881 | } |
| 1882 | |
| 1883 | |
| 1884 | /* get the start time of the trace */ |
| 1885 | |
| 1886 | LttTime ltt_trace_system_description_trace_start_time(LttSystemDescription *s) |
| 1887 | { |
| 1888 | return s->trace_start; |
| 1889 | } |
| 1890 | |
| 1891 | |
| 1892 | LttTracefile *ltt_tracefile_new() |
| 1893 | { |
| 1894 | return g_new(LttTracefile, 1); |
| 1895 | } |
| 1896 | |
| 1897 | void ltt_tracefile_destroy(LttTracefile *tf) |
| 1898 | { |
| 1899 | g_free(tf); |
| 1900 | } |
| 1901 | |
| 1902 | void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src) |
| 1903 | { |
| 1904 | *dest = *src; |
| 1905 | } |
| 1906 | |
| 1907 | /* Before library loading... */ |
| 1908 | |
| 1909 | static void __attribute__((constructor)) init(void) |
| 1910 | { |
| 1911 | LTT_FACILITY_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); |
| 1912 | LTT_EVENT_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); |
| 1913 | |
| 1914 | LTT_TRACEFILE_NAME_FACILITIES = g_quark_from_string("control/facilities"); |
| 1915 | } |
| 1916 | |