| 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 | GQuark LTT_TRACEFILE_NAME_FACILITIES; |
| 58 | |
| 59 | #ifndef g_open |
| 60 | #define g_open open |
| 61 | #endif |
| 62 | |
| 63 | |
| 64 | #define __UNUSED__ __attribute__((__unused__)) |
| 65 | |
| 66 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
| 67 | |
| 68 | #ifndef g_debug |
| 69 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
| 70 | #endif |
| 71 | |
| 72 | #define g_close close |
| 73 | |
| 74 | /* Those macros must be called from within a function where page_size is a known |
| 75 | * variable */ |
| 76 | #define PAGE_MASK (~(page_size-1)) |
| 77 | #define PAGE_ALIGN(addr) (((addr)+page_size-1)&PAGE_MASK) |
| 78 | |
| 79 | /* set the offset of the fields belonging to the event, |
| 80 | need the information of the archecture */ |
| 81 | void set_fields_offsets(LttTracefile *tf, LttEventType *event_type); |
| 82 | //size_t get_fields_offsets(LttTracefile *tf, LttEventType *event_type, void *data); |
| 83 | |
| 84 | /* get the size of the field type according to |
| 85 | * The facility size information. */ |
| 86 | static inline void preset_field_type_size(LttTracefile *tf, |
| 87 | LttEventType *event_type, |
| 88 | off_t offset_root, off_t offset_parent, |
| 89 | enum field_status *fixed_root, enum field_status *fixed_parent, |
| 90 | LttField *field); |
| 91 | |
| 92 | /* map a fixed size or a block information from the file (fd) */ |
| 93 | static gint map_block(LttTracefile * tf, guint block_num); |
| 94 | |
| 95 | /* calculate nsec per cycles for current block */ |
| 96 | static double calc_nsecs_per_cycle(LttTracefile * t); |
| 97 | |
| 98 | /* go to the next event */ |
| 99 | static int ltt_seek_next_event(LttTracefile *tf); |
| 100 | |
| 101 | void ltt_update_event_size(LttTracefile *tf); |
| 102 | |
| 103 | #if 0 |
| 104 | /* Functions to parse system.xml file (using glib xml parser) */ |
| 105 | static void parser_start_element (GMarkupParseContext __UNUSED__ *context, |
| 106 | const gchar *element_name, |
| 107 | const gchar **attribute_names, |
| 108 | const gchar **attribute_values, |
| 109 | gpointer user_data, |
| 110 | GError **error) |
| 111 | { |
| 112 | int i=0; |
| 113 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
| 114 | if(strcmp("system", element_name)){ |
| 115 | *error = g_error_new(G_MARKUP_ERROR, |
| 116 | G_LOG_LEVEL_WARNING, |
| 117 | "This is not system.xml file"); |
| 118 | return; |
| 119 | } |
| 120 | |
| 121 | while(attribute_names[i]){ |
| 122 | if(strcmp("node_name", attribute_names[i])==0){ |
| 123 | des->node_name = g_strdup(attribute_values[i]); |
| 124 | }else if(strcmp("domainname", attribute_names[i])==0){ |
| 125 | des->domain_name = g_strdup(attribute_values[i]); |
| 126 | }else if(strcmp("cpu", attribute_names[i])==0){ |
| 127 | des->nb_cpu = atoi(attribute_values[i]); |
| 128 | }else if(strcmp("arch_size", attribute_names[i])==0){ |
| 129 | if(strcmp(attribute_values[i],"LP32") == 0) des->size = LTT_LP32; |
| 130 | else if(strcmp(attribute_values[i],"ILP32") == 0) des->size = LTT_ILP32; |
| 131 | else if(strcmp(attribute_values[i],"LP64") == 0) des->size = LTT_LP64; |
| 132 | else if(strcmp(attribute_values[i],"ILP64") == 0) des->size = LTT_ILP64; |
| 133 | else if(strcmp(attribute_values[i],"UNKNOWN") == 0) des->size = LTT_UNKNOWN; |
| 134 | }else if(strcmp("endian", attribute_names[i])==0){ |
| 135 | if(strcmp(attribute_values[i],"LITTLE_ENDIAN") == 0) |
| 136 | des->endian = LTT_LITTLE_ENDIAN; |
| 137 | else if(strcmp(attribute_values[i],"BIG_ENDIAN") == 0) |
| 138 | des->endian = LTT_BIG_ENDIAN; |
| 139 | }else if(strcmp("kernel_name", attribute_names[i])==0){ |
| 140 | des->kernel_name = g_strdup(attribute_values[i]); |
| 141 | }else if(strcmp("kernel_release", attribute_names[i])==0){ |
| 142 | des->kernel_release = g_strdup(attribute_values[i]); |
| 143 | }else if(strcmp("kernel_version", attribute_names[i])==0){ |
| 144 | des->kernel_version = g_strdup(attribute_values[i]); |
| 145 | }else if(strcmp("machine", attribute_names[i])==0){ |
| 146 | des->machine = g_strdup(attribute_values[i]); |
| 147 | }else if(strcmp("processor", attribute_names[i])==0){ |
| 148 | des->processor = g_strdup(attribute_values[i]); |
| 149 | }else if(strcmp("hardware_platform", attribute_names[i])==0){ |
| 150 | des->hardware_platform = g_strdup(attribute_values[i]); |
| 151 | }else if(strcmp("operating_system", attribute_names[i])==0){ |
| 152 | des->operating_system = g_strdup(attribute_values[i]); |
| 153 | }else if(strcmp("ltt_major_version", attribute_names[i])==0){ |
| 154 | des->ltt_major_version = atoi(attribute_values[i]); |
| 155 | }else if(strcmp("ltt_minor_version", attribute_names[i])==0){ |
| 156 | des->ltt_minor_version = atoi(attribute_values[i]); |
| 157 | }else if(strcmp("ltt_block_size", attribute_names[i])==0){ |
| 158 | des->ltt_block_size = atoi(attribute_values[i]); |
| 159 | }else{ |
| 160 | *error = g_error_new(G_MARKUP_ERROR, |
| 161 | G_LOG_LEVEL_WARNING, |
| 162 | "Not a valid attribute"); |
| 163 | return; |
| 164 | } |
| 165 | i++; |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | static void parser_characters (GMarkupParseContext __UNUSED__ *context, |
| 170 | const gchar *text, |
| 171 | gsize __UNUSED__ text_len, |
| 172 | gpointer user_data, |
| 173 | GError __UNUSED__ **error) |
| 174 | { |
| 175 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
| 176 | des->description = g_strdup(text); |
| 177 | } |
| 178 | #endif //0 |
| 179 | LttFacility *ltt_trace_get_facility_by_num(LttTrace *t, |
| 180 | guint num) |
| 181 | { |
| 182 | g_assert(num < t->facilities_by_num->len); |
| 183 | |
| 184 | return &g_array_index(t->facilities_by_num, LttFacility, num); |
| 185 | |
| 186 | } |
| 187 | |
| 188 | guint ltt_trace_get_num_cpu(LttTrace *t) |
| 189 | { |
| 190 | return t->num_cpu; |
| 191 | } |
| 192 | |
| 193 | |
| 194 | /* trace can be NULL |
| 195 | * |
| 196 | * Return value : 0 success, 1 bad tracefile |
| 197 | */ |
| 198 | int parse_trace_header(void *header, LttTracefile *tf, LttTrace *t) |
| 199 | { |
| 200 | guint32 *magic_number = (guint32*)header; |
| 201 | struct ltt_trace_header_any *any = (struct ltt_trace_header_any *)header; |
| 202 | |
| 203 | if(*magic_number == LTT_MAGIC_NUMBER) |
| 204 | tf->reverse_bo = 0; |
| 205 | else if(*magic_number == LTT_REV_MAGIC_NUMBER) |
| 206 | tf->reverse_bo = 1; |
| 207 | else /* invalid magic number, bad tracefile ! */ |
| 208 | return 1; |
| 209 | |
| 210 | /* Get float byte order : might be different from int byte order |
| 211 | * (or is set to 0 if the trace has no float (kernel trace)) */ |
| 212 | tf->float_word_order = any->float_word_order; |
| 213 | |
| 214 | if(t) { |
| 215 | t->arch_type = ltt_get_uint32(LTT_GET_BO(tf), |
| 216 | &any->arch_type); |
| 217 | t->arch_variant = ltt_get_uint32(LTT_GET_BO(tf), |
| 218 | &any->arch_variant); |
| 219 | t->arch_size = any->arch_size; |
| 220 | t->ltt_major_version = any->major_version; |
| 221 | t->ltt_minor_version = any->minor_version; |
| 222 | t->flight_recorder = any->flight_recorder; |
| 223 | t->has_heartbeat = any->has_heartbeat; |
| 224 | t->has_alignment = any->has_alignment; |
| 225 | t->has_tsc = any->has_tsc; |
| 226 | } |
| 227 | |
| 228 | |
| 229 | switch(any->major_version) { |
| 230 | |
| 231 | case 0: |
| 232 | switch(any->minor_version) { |
| 233 | case 3: |
| 234 | { |
| 235 | struct ltt_trace_header_0_3 *header_0_3 = |
| 236 | (struct ltt_trace_header_0_3 *)header; |
| 237 | |
| 238 | } |
| 239 | break; |
| 240 | default: |
| 241 | g_warning("Unsupported trace version : %hhu.%hhu", |
| 242 | any->major_version, any->minor_version); |
| 243 | return 1; |
| 244 | } |
| 245 | break; |
| 246 | |
| 247 | default: |
| 248 | g_warning("Unsupported trace version : %hhu.%hhu", |
| 249 | any->major_version, any->minor_version); |
| 250 | return 1; |
| 251 | } |
| 252 | |
| 253 | |
| 254 | return 0; |
| 255 | } |
| 256 | |
| 257 | |
| 258 | |
| 259 | /***************************************************************************** |
| 260 | *Function name |
| 261 | * ltt_tracefile_open : open a trace file, construct a LttTracefile |
| 262 | *Input params |
| 263 | * t : the trace containing the tracefile |
| 264 | * fileName : path name of the trace file |
| 265 | * tf : the tracefile structure |
| 266 | *Return value |
| 267 | * : 0 for success, -1 otherwise. |
| 268 | ****************************************************************************/ |
| 269 | |
| 270 | gint ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf) |
| 271 | { |
| 272 | struct stat lTDFStat; /* Trace data file status */ |
| 273 | struct ltt_block_start_header *header; |
| 274 | int page_size = getpagesize(); |
| 275 | |
| 276 | //open the file |
| 277 | tf->long_name = g_quark_from_string(fileName); |
| 278 | tf->trace = t; |
| 279 | tf->fd = open(fileName, O_RDONLY); |
| 280 | if(tf->fd < 0){ |
| 281 | g_warning("Unable to open input data file %s\n", fileName); |
| 282 | goto end; |
| 283 | } |
| 284 | |
| 285 | // Get the file's status |
| 286 | if(fstat(tf->fd, &lTDFStat) < 0){ |
| 287 | g_warning("Unable to get the status of the input data file %s\n", fileName); |
| 288 | goto close_file; |
| 289 | } |
| 290 | |
| 291 | // Is the file large enough to contain a trace |
| 292 | if(lTDFStat.st_size < (off_t)(sizeof(struct ltt_block_start_header))){ |
| 293 | g_print("The input data file %s does not contain a trace\n", fileName); |
| 294 | goto close_file; |
| 295 | } |
| 296 | |
| 297 | /* Temporarily map the buffer start header to get trace information */ |
| 298 | /* Multiple of pages aligned head */ |
| 299 | tf->buffer.head = mmap(0, |
| 300 | PAGE_ALIGN(sizeof(struct ltt_block_start_header)), PROT_READ, |
| 301 | MAP_PRIVATE, tf->fd, 0); |
| 302 | if(tf->buffer.head == MAP_FAILED) { |
| 303 | perror("Error in allocating memory for buffer of tracefile"); |
| 304 | goto close_file; |
| 305 | } |
| 306 | g_assert( ( (guint)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
| 307 | |
| 308 | header = (struct ltt_block_start_header*)tf->buffer.head; |
| 309 | |
| 310 | if(parse_trace_header(header->trace, tf, NULL)) goto unmap_file; |
| 311 | |
| 312 | //store the size of the file |
| 313 | tf->file_size = lTDFStat.st_size; |
| 314 | tf->buf_size = ltt_get_uint32(LTT_GET_BO(tf), &header->buf_size); |
| 315 | tf->num_blocks = tf->file_size / tf->buf_size; |
| 316 | |
| 317 | if(munmap(tf->buffer.head, |
| 318 | PAGE_ALIGN(sizeof(struct ltt_block_start_header)))) { |
| 319 | g_warning("unmap size : %u\n", |
| 320 | PAGE_ALIGN(sizeof(struct ltt_block_start_header))); |
| 321 | perror("munmap error"); |
| 322 | g_assert(0); |
| 323 | } |
| 324 | tf->buffer.head = NULL; |
| 325 | |
| 326 | //read the first block |
| 327 | if(map_block(tf,0)) { |
| 328 | perror("Cannot map block for tracefile"); |
| 329 | goto close_file; |
| 330 | } |
| 331 | |
| 332 | return 0; |
| 333 | |
| 334 | /* Error */ |
| 335 | unmap_file: |
| 336 | if(munmap(tf->buffer.head, |
| 337 | PAGE_ALIGN(sizeof(struct ltt_block_start_header)))) { |
| 338 | g_warning("unmap size : %u\n", |
| 339 | PAGE_ALIGN(sizeof(struct ltt_block_start_header))); |
| 340 | perror("munmap error"); |
| 341 | g_assert(0); |
| 342 | } |
| 343 | close_file: |
| 344 | close(tf->fd); |
| 345 | end: |
| 346 | return -1; |
| 347 | } |
| 348 | |
| 349 | LttTrace *ltt_tracefile_get_trace(LttTracefile *tf) |
| 350 | { |
| 351 | return tf->trace; |
| 352 | } |
| 353 | |
| 354 | #if 0 |
| 355 | /***************************************************************************** |
| 356 | *Open control and per cpu tracefiles |
| 357 | ****************************************************************************/ |
| 358 | |
| 359 | void ltt_tracefile_open_cpu(LttTrace *t, gchar * tracefile_name) |
| 360 | { |
| 361 | LttTracefile * tf; |
| 362 | tf = ltt_tracefile_open(t,tracefile_name); |
| 363 | if(!tf) return; |
| 364 | t->per_cpu_tracefile_number++; |
| 365 | g_ptr_array_add(t->per_cpu_tracefiles, tf); |
| 366 | } |
| 367 | |
| 368 | gint ltt_tracefile_open_control(LttTrace *t, gchar * control_name) |
| 369 | { |
| 370 | LttTracefile * tf; |
| 371 | LttEvent ev; |
| 372 | LttFacility * f; |
| 373 | void * pos; |
| 374 | FacilityLoad fLoad; |
| 375 | unsigned int i; |
| 376 | |
| 377 | tf = ltt_tracefile_open(t,control_name); |
| 378 | if(!tf) { |
| 379 | g_warning("ltt_tracefile_open_control : bad file descriptor"); |
| 380 | return -1; |
| 381 | } |
| 382 | t->control_tracefile_number++; |
| 383 | g_ptr_array_add(t->control_tracefiles,tf); |
| 384 | |
| 385 | //parse facilities tracefile to get base_id |
| 386 | if(strcmp(&control_name[strlen(control_name)-10],"facilities") ==0){ |
| 387 | while(1){ |
| 388 | if(!ltt_tracefile_read(tf,&ev)) return 0; // end of file |
| 389 | |
| 390 | if(ev.event_id == TRACE_FACILITY_LOAD){ |
| 391 | pos = ev.data; |
| 392 | fLoad.name = (gchar*)pos; |
| 393 | fLoad.checksum = *(LttChecksum*)(pos + strlen(fLoad.name)); |
| 394 | fLoad.base_code = *(guint32 *)(pos + strlen(fLoad.name) + sizeof(LttChecksum)); |
| 395 | |
| 396 | for(i=0;i<t->facility_number;i++){ |
| 397 | f = (LttFacility*)g_ptr_array_index(t->facilities,i); |
| 398 | if(strcmp(f->name,fLoad.name)==0 && fLoad.checksum==f->checksum){ |
| 399 | f->base_id = fLoad.base_code; |
| 400 | break; |
| 401 | } |
| 402 | } |
| 403 | if(i==t->facility_number) { |
| 404 | g_warning("Facility: %s, checksum: %u is not found", |
| 405 | fLoad.name,(unsigned int)fLoad.checksum); |
| 406 | return -1; |
| 407 | } |
| 408 | }else if(ev.event_id == TRACE_BLOCK_START){ |
| 409 | continue; |
| 410 | }else if(ev.event_id == TRACE_BLOCK_END){ |
| 411 | break; |
| 412 | }else { |
| 413 | g_warning("Not valid facilities trace file"); |
| 414 | return -1; |
| 415 | } |
| 416 | } |
| 417 | } |
| 418 | return 0; |
| 419 | } |
| 420 | #endif //0 |
| 421 | |
| 422 | /***************************************************************************** |
| 423 | *Function name |
| 424 | * ltt_tracefile_close: close a trace file, |
| 425 | *Input params |
| 426 | * t : tracefile which will be closed |
| 427 | ****************************************************************************/ |
| 428 | |
| 429 | void ltt_tracefile_close(LttTracefile *t) |
| 430 | { |
| 431 | int page_size = getpagesize(); |
| 432 | |
| 433 | if(t->buffer.head != NULL) |
| 434 | if(munmap(t->buffer.head, PAGE_ALIGN(t->buf_size))) { |
| 435 | g_warning("unmap size : %u\n", |
| 436 | PAGE_ALIGN(t->buf_size)); |
| 437 | perror("munmap error"); |
| 438 | g_assert(0); |
| 439 | } |
| 440 | |
| 441 | close(t->fd); |
| 442 | } |
| 443 | |
| 444 | |
| 445 | /***************************************************************************** |
| 446 | *Get system information |
| 447 | ****************************************************************************/ |
| 448 | #if 0 |
| 449 | gint getSystemInfo(LttSystemDescription* des, gchar * pathname) |
| 450 | { |
| 451 | int fd; |
| 452 | GIOChannel *iochan; |
| 453 | gchar *buf = NULL; |
| 454 | gsize length; |
| 455 | |
| 456 | GMarkupParseContext * context; |
| 457 | GError * error = NULL; |
| 458 | GMarkupParser markup_parser = |
| 459 | { |
| 460 | parser_start_element, |
| 461 | NULL, |
| 462 | parser_characters, |
| 463 | NULL, /* passthrough */ |
| 464 | NULL /* error */ |
| 465 | }; |
| 466 | |
| 467 | fd = g_open(pathname, O_RDONLY, 0); |
| 468 | if(fd == -1){ |
| 469 | g_warning("Can not open file : %s\n", pathname); |
| 470 | return -1; |
| 471 | } |
| 472 | |
| 473 | iochan = g_io_channel_unix_new(fd); |
| 474 | |
| 475 | context = g_markup_parse_context_new(&markup_parser, 0, des,NULL); |
| 476 | |
| 477 | //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){ |
| 478 | while(g_io_channel_read_line(iochan, &buf, &length, NULL, &error) |
| 479 | != G_IO_STATUS_EOF) { |
| 480 | |
| 481 | if(error != NULL) { |
| 482 | g_warning("Can not read xml file: \n%s\n", error->message); |
| 483 | g_error_free(error); |
| 484 | } |
| 485 | if(!g_markup_parse_context_parse(context, buf, length, &error)){ |
| 486 | if(error != NULL) { |
| 487 | g_warning("Can not parse xml file: \n%s\n", error->message); |
| 488 | g_error_free(error); |
| 489 | } |
| 490 | g_markup_parse_context_free(context); |
| 491 | |
| 492 | g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ |
| 493 | if(error != NULL) { |
| 494 | g_warning("Can not close file: \n%s\n", error->message); |
| 495 | g_error_free(error); |
| 496 | } |
| 497 | |
| 498 | close(fd); |
| 499 | return -1; |
| 500 | } |
| 501 | } |
| 502 | g_markup_parse_context_free(context); |
| 503 | |
| 504 | g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ |
| 505 | if(error != NULL) { |
| 506 | g_warning("Can not close file: \n%s\n", error->message); |
| 507 | g_error_free(error); |
| 508 | } |
| 509 | |
| 510 | g_close(fd); |
| 511 | |
| 512 | g_free(buf); |
| 513 | return 0; |
| 514 | } |
| 515 | #endif //0 |
| 516 | |
| 517 | /***************************************************************************** |
| 518 | *The following functions get facility/tracefile information |
| 519 | ****************************************************************************/ |
| 520 | #if 0 |
| 521 | gint getFacilityInfo(LttTrace *t, gchar* eventdefs) |
| 522 | { |
| 523 | GDir * dir; |
| 524 | const gchar * name; |
| 525 | unsigned int i,j; |
| 526 | LttFacility * f; |
| 527 | LttEventType * et; |
| 528 | gchar fullname[DIR_NAME_SIZE]; |
| 529 | GError * error = NULL; |
| 530 | |
| 531 | dir = g_dir_open(eventdefs, 0, &error); |
| 532 | |
| 533 | if(error != NULL) { |
| 534 | g_warning("Can not open directory: %s, %s\n", eventdefs, error->message); |
| 535 | g_error_free(error); |
| 536 | return -1; |
| 537 | } |
| 538 | |
| 539 | while((name = g_dir_read_name(dir)) != NULL){ |
| 540 | if(!g_pattern_match_simple("*.xml", name)) continue; |
| 541 | strcpy(fullname,eventdefs); |
| 542 | strcat(fullname,name); |
| 543 | ltt_facility_open(t,fullname); |
| 544 | } |
| 545 | g_dir_close(dir); |
| 546 | |
| 547 | for(j=0;j<t->facility_number;j++){ |
| 548 | f = (LttFacility*)g_ptr_array_index(t->facilities, j); |
| 549 | for(i=0; i<f->event_number; i++){ |
| 550 | et = f->events[i]; |
| 551 | setFieldsOffset(NULL, et, NULL, t); |
| 552 | } |
| 553 | } |
| 554 | return 0; |
| 555 | } |
| 556 | #endif //0 |
| 557 | |
| 558 | /***************************************************************************** |
| 559 | *A trace is specified as a pathname to the directory containing all the |
| 560 | *associated data (control tracefiles, per cpu tracefiles, event |
| 561 | *descriptions...). |
| 562 | * |
| 563 | *When a trace is closed, all the associated facilities, types and fields |
| 564 | *are released as well. |
| 565 | */ |
| 566 | |
| 567 | |
| 568 | /**************************************************************************** |
| 569 | * get_absolute_pathname |
| 570 | * |
| 571 | * return the unique pathname in the system |
| 572 | * |
| 573 | * MD : Fixed this function so it uses realpath, dealing well with |
| 574 | * forgotten cases (.. were not used correctly before). |
| 575 | * |
| 576 | ****************************************************************************/ |
| 577 | void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname) |
| 578 | { |
| 579 | abs_pathname[0] = '\0'; |
| 580 | |
| 581 | if ( realpath (pathname, abs_pathname) != NULL) |
| 582 | return; |
| 583 | else |
| 584 | { |
| 585 | /* error, return the original path unmodified */ |
| 586 | strcpy(abs_pathname, pathname); |
| 587 | return; |
| 588 | } |
| 589 | return; |
| 590 | } |
| 591 | |
| 592 | /* Search for something like : .*_.* |
| 593 | * |
| 594 | * The left side is the name, the right side is the number. |
| 595 | */ |
| 596 | |
| 597 | int get_tracefile_name_number(const gchar *raw_name, |
| 598 | GQuark *name, |
| 599 | guint *num) |
| 600 | { |
| 601 | guint raw_name_len = strlen(raw_name); |
| 602 | gchar char_name[PATH_MAX]; |
| 603 | int i; |
| 604 | int underscore_pos; |
| 605 | long int cpu_num; |
| 606 | gchar *endptr; |
| 607 | |
| 608 | for(i=raw_name_len-1;i>=0;i--) { |
| 609 | if(raw_name[i] == '_') break; |
| 610 | } |
| 611 | if(i==0) /* Either not found or name length is 0 */ |
| 612 | return -1; |
| 613 | underscore_pos = i; |
| 614 | |
| 615 | cpu_num = strtol(raw_name+underscore_pos+1, &endptr, 10); |
| 616 | |
| 617 | if(endptr == raw_name+underscore_pos+1) |
| 618 | return -1; /* No digit */ |
| 619 | if(cpu_num == LONG_MIN || cpu_num == LONG_MAX) |
| 620 | return -1; /* underflow / overflow */ |
| 621 | |
| 622 | strncpy(char_name, raw_name, underscore_pos); |
| 623 | |
| 624 | char_name[underscore_pos] = '\0'; |
| 625 | |
| 626 | *name = g_quark_from_string(char_name); |
| 627 | *num = cpu_num; |
| 628 | |
| 629 | return 0; |
| 630 | } |
| 631 | |
| 632 | |
| 633 | GData **ltt_trace_get_tracefiles_groups(LttTrace *trace) |
| 634 | { |
| 635 | return &trace->tracefiles; |
| 636 | } |
| 637 | |
| 638 | |
| 639 | void compute_tracefile_group(GQuark key_id, |
| 640 | GArray *group, |
| 641 | struct compute_tracefile_group_args *args) |
| 642 | { |
| 643 | int i; |
| 644 | LttTracefile *tf; |
| 645 | |
| 646 | for(i=0; i<group->len; i++) { |
| 647 | tf = &g_array_index (group, LttTracefile, i); |
| 648 | if(tf->cpu_online) |
| 649 | args->func(tf, args->func_args); |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | |
| 654 | void ltt_tracefile_group_destroy(gpointer data) |
| 655 | { |
| 656 | GArray *group = (GArray *)data; |
| 657 | int i; |
| 658 | LttTracefile *tf; |
| 659 | |
| 660 | for(i=0; i<group->len; i++) { |
| 661 | tf = &g_array_index (group, LttTracefile, i); |
| 662 | if(tf->cpu_online) |
| 663 | ltt_tracefile_close(tf); |
| 664 | } |
| 665 | g_array_free(group, TRUE); |
| 666 | } |
| 667 | |
| 668 | gboolean ltt_tracefile_group_has_cpu_online(gpointer data) |
| 669 | { |
| 670 | GArray *group = (GArray *)data; |
| 671 | int i; |
| 672 | LttTracefile *tf; |
| 673 | |
| 674 | for(i=0; i<group->len; i++) { |
| 675 | tf = &g_array_index (group, LttTracefile, i); |
| 676 | if(tf->cpu_online) return 1; |
| 677 | } |
| 678 | return 0; |
| 679 | } |
| 680 | |
| 681 | |
| 682 | /* Open each tracefile under a specific directory. Put them in a |
| 683 | * GData : permits to access them using their tracefile group pathname. |
| 684 | * i.e. access control/modules tracefile group by index : |
| 685 | * "control/module". |
| 686 | * |
| 687 | * relative path is the path relative to the trace root |
| 688 | * root path is the full path |
| 689 | * |
| 690 | * A tracefile group is simply an array where all the per cpu tracefiles sits. |
| 691 | */ |
| 692 | |
| 693 | static int open_tracefiles(LttTrace *trace, gchar *root_path, |
| 694 | gchar *relative_path) |
| 695 | { |
| 696 | DIR *dir = opendir(root_path); |
| 697 | struct dirent *entry; |
| 698 | struct stat stat_buf; |
| 699 | int ret; |
| 700 | |
| 701 | gchar path[PATH_MAX]; |
| 702 | int path_len; |
| 703 | gchar *path_ptr; |
| 704 | |
| 705 | int rel_path_len; |
| 706 | gchar rel_path[PATH_MAX]; |
| 707 | gchar *rel_path_ptr; |
| 708 | LttTracefile tmp_tf; |
| 709 | |
| 710 | if(dir == NULL) { |
| 711 | perror(root_path); |
| 712 | return ENOENT; |
| 713 | } |
| 714 | |
| 715 | strncpy(path, root_path, PATH_MAX-1); |
| 716 | path_len = strlen(path); |
| 717 | path[path_len] = '/'; |
| 718 | path_len++; |
| 719 | path_ptr = path + path_len; |
| 720 | |
| 721 | strncpy(rel_path, relative_path, PATH_MAX-1); |
| 722 | rel_path_len = strlen(rel_path); |
| 723 | rel_path[rel_path_len] = '/'; |
| 724 | rel_path_len++; |
| 725 | rel_path_ptr = rel_path + rel_path_len; |
| 726 | |
| 727 | while((entry = readdir(dir)) != NULL) { |
| 728 | |
| 729 | if(entry->d_name[0] == '.') continue; |
| 730 | |
| 731 | strncpy(path_ptr, entry->d_name, PATH_MAX - path_len); |
| 732 | strncpy(rel_path_ptr, entry->d_name, PATH_MAX - rel_path_len); |
| 733 | |
| 734 | ret = stat(path, &stat_buf); |
| 735 | if(ret == -1) { |
| 736 | perror(path); |
| 737 | continue; |
| 738 | } |
| 739 | |
| 740 | g_debug("Tracefile file or directory : %s\n", path); |
| 741 | |
| 742 | if(strcmp(rel_path, "/eventdefs") == 0) continue; |
| 743 | |
| 744 | if(S_ISDIR(stat_buf.st_mode)) { |
| 745 | |
| 746 | g_debug("Entering subdirectory...\n"); |
| 747 | ret = open_tracefiles(trace, path, rel_path); |
| 748 | if(ret < 0) continue; |
| 749 | } else if(S_ISREG(stat_buf.st_mode)) { |
| 750 | GQuark name; |
| 751 | guint num; |
| 752 | GArray *group; |
| 753 | |
| 754 | if(get_tracefile_name_number(rel_path, &name, &num)) |
| 755 | continue; /* invalid name */ |
| 756 | |
| 757 | g_debug("Opening file.\n"); |
| 758 | if(ltt_tracefile_open(trace, path, &tmp_tf)) { |
| 759 | g_info("Error opening tracefile %s", path); |
| 760 | |
| 761 | continue; /* error opening the tracefile : bad magic number ? */ |
| 762 | } |
| 763 | |
| 764 | g_debug("Tracefile name is %s and number is %u", |
| 765 | g_quark_to_string(name), num); |
| 766 | |
| 767 | tmp_tf.cpu_online = 1; |
| 768 | tmp_tf.cpu_num = num; |
| 769 | tmp_tf.name = name; |
| 770 | |
| 771 | group = g_datalist_id_get_data(&trace->tracefiles, name); |
| 772 | if(group == NULL) { |
| 773 | /* Elements are automatically cleared when the array is allocated. |
| 774 | * It makes the cpu_online variable set to 0 : cpu offline, by default. |
| 775 | */ |
| 776 | group = g_array_sized_new (FALSE, TRUE, sizeof(LttTracefile), 10); |
| 777 | g_datalist_id_set_data_full(&trace->tracefiles, name, |
| 778 | group, ltt_tracefile_group_destroy); |
| 779 | } |
| 780 | |
| 781 | /* Add the per cpu tracefile to the named group */ |
| 782 | unsigned int old_len = group->len; |
| 783 | if(num+1 > old_len) |
| 784 | group = g_array_set_size(group, num+1); |
| 785 | g_array_index (group, LttTracefile, num) = tmp_tf; |
| 786 | |
| 787 | } |
| 788 | } |
| 789 | |
| 790 | closedir(dir); |
| 791 | |
| 792 | return 0; |
| 793 | } |
| 794 | |
| 795 | /* ltt_get_facility_description |
| 796 | * |
| 797 | * Opens the trace corresponding to the requested facility (identified by fac_id |
| 798 | * and checksum). |
| 799 | * |
| 800 | * The name searched is : %trace root%/eventdefs/facname_checksum.xml |
| 801 | * |
| 802 | * Returns 0 on success, or 1 on failure. |
| 803 | */ |
| 804 | |
| 805 | static int ltt_get_facility_description(LttFacility *f, |
| 806 | LttTrace *t, |
| 807 | LttTracefile *fac_tf) |
| 808 | { |
| 809 | char desc_file_name[PATH_MAX]; |
| 810 | const gchar *text; |
| 811 | guint textlen; |
| 812 | gint err; |
| 813 | |
| 814 | text = g_quark_to_string(t->pathname); |
| 815 | textlen = strlen(text); |
| 816 | |
| 817 | if(textlen >= PATH_MAX) goto name_error; |
| 818 | strcpy(desc_file_name, text); |
| 819 | |
| 820 | text = "/eventdefs/"; |
| 821 | textlen+=strlen(text); |
| 822 | if(textlen >= PATH_MAX) goto name_error; |
| 823 | strcat(desc_file_name, text); |
| 824 | |
| 825 | text = g_quark_to_string(f->name); |
| 826 | textlen+=strlen(text); |
| 827 | if(textlen >= PATH_MAX) goto name_error; |
| 828 | strcat(desc_file_name, text); |
| 829 | |
| 830 | text = "_"; |
| 831 | textlen+=strlen(text); |
| 832 | if(textlen >= PATH_MAX) goto name_error; |
| 833 | strcat(desc_file_name, text); |
| 834 | |
| 835 | err = snprintf(desc_file_name+textlen, PATH_MAX-textlen-1, |
| 836 | "%u", f->checksum); |
| 837 | if(err < 0) goto name_error; |
| 838 | |
| 839 | textlen=strlen(desc_file_name); |
| 840 | |
| 841 | text = ".xml"; |
| 842 | textlen+=strlen(text); |
| 843 | if(textlen >= PATH_MAX) goto name_error; |
| 844 | strcat(desc_file_name, text); |
| 845 | |
| 846 | err = ltt_facility_open(f, t, desc_file_name); |
| 847 | if(err) goto facility_error; |
| 848 | |
| 849 | return 0; |
| 850 | |
| 851 | facility_error: |
| 852 | name_error: |
| 853 | return 1; |
| 854 | } |
| 855 | |
| 856 | static void ltt_fac_ids_destroy(gpointer data) |
| 857 | { |
| 858 | GArray *fac_ids = (GArray *)data; |
| 859 | |
| 860 | g_array_free(fac_ids, TRUE); |
| 861 | } |
| 862 | |
| 863 | |
| 864 | /* Presumes the tracefile is already seeked at the beginning. It makes sense, |
| 865 | * because it must be done just after the opening */ |
| 866 | static int ltt_process_facility_tracefile(LttTracefile *tf) |
| 867 | { |
| 868 | int err; |
| 869 | LttFacility *fac; |
| 870 | GArray *fac_ids; |
| 871 | guint i; |
| 872 | LttEventType *et; |
| 873 | |
| 874 | while(1) { |
| 875 | err = ltt_tracefile_read_seek(tf); |
| 876 | if(err == EPERM) goto seek_error; |
| 877 | else if(err == ERANGE) break; /* End of tracefile */ |
| 878 | |
| 879 | err = ltt_tracefile_read_update_event(tf); |
| 880 | if(err) goto update_error; |
| 881 | |
| 882 | /* We are on a facility load/or facility unload/ or heartbeat event */ |
| 883 | /* The rules are : |
| 884 | * * facility 0 is hardcoded : this is the core facility. It will be shown |
| 885 | * in the facility array though, and is shown as "loaded builtin" in the |
| 886 | * trace. |
| 887 | * It contains event : |
| 888 | * 0 : facility load |
| 889 | * 1 : facility unload |
| 890 | * 2 : state dump facility load |
| 891 | * 3 : heartbeat |
| 892 | */ |
| 893 | if(tf->event.facility_id != LTT_FACILITY_CORE) { |
| 894 | /* Should only contain core facility */ |
| 895 | g_warning("Error in processing facility file %s, " |
| 896 | "should not contain facility id %u.", g_quark_to_string(tf->name), |
| 897 | tf->event.facility_id); |
| 898 | err = EPERM; |
| 899 | goto fac_id_error; |
| 900 | } else { |
| 901 | |
| 902 | struct LttFacilityLoad *fac_load_data; |
| 903 | struct LttStateDumpFacilityLoad *fac_state_dump_load_data; |
| 904 | char *fac_name; |
| 905 | |
| 906 | // FIXME align |
| 907 | switch((enum ltt_core_events)tf->event.event_id) { |
| 908 | case LTT_EVENT_FACILITY_LOAD: |
| 909 | fac_name = (char*)(tf->event.data); |
| 910 | g_debug("Doing LTT_EVENT_FACILITY_LOAD of facility %s", |
| 911 | fac_name); |
| 912 | fac_load_data = |
| 913 | (struct LttFacilityLoad *) |
| 914 | (tf->event.data + strlen(fac_name) + 1); |
| 915 | fac = &g_array_index (tf->trace->facilities_by_num, LttFacility, |
| 916 | ltt_get_uint32(LTT_GET_BO(tf), &fac_load_data->id)); |
| 917 | g_assert(fac->exists == 0); |
| 918 | fac->name = g_quark_from_string(fac_name); |
| 919 | fac->checksum = ltt_get_uint32(LTT_GET_BO(tf), |
| 920 | &fac_load_data->checksum); |
| 921 | fac->id = ltt_get_uint32(LTT_GET_BO(tf), &fac_load_data->id); |
| 922 | fac->pointer_size = ltt_get_uint32(LTT_GET_BO(tf), |
| 923 | &fac_load_data->pointer_size); |
| 924 | fac->long_size = ltt_get_uint32(LTT_GET_BO(tf), |
| 925 | &fac_load_data->long_size); |
| 926 | fac->size_t_size = ltt_get_uint32(LTT_GET_BO(tf), |
| 927 | &fac_load_data->size_t_size); |
| 928 | fac->alignment = ltt_get_uint32(LTT_GET_BO(tf), |
| 929 | &fac_load_data->alignment); |
| 930 | |
| 931 | if(ltt_get_facility_description(fac, tf->trace, tf)) |
| 932 | continue; /* error opening description */ |
| 933 | |
| 934 | fac->trace = tf->trace; |
| 935 | |
| 936 | /* Preset the field offsets */ |
| 937 | for(i=0; i<fac->events->len; i++){ |
| 938 | et = &g_array_index(fac->events, LttEventType, i); |
| 939 | set_fields_offsets(tf, et); |
| 940 | } |
| 941 | |
| 942 | fac->exists = 1; |
| 943 | |
| 944 | fac_ids = g_datalist_id_get_data(&tf->trace->facilities_by_name, |
| 945 | fac->name); |
| 946 | if(fac_ids == NULL) { |
| 947 | fac_ids = g_array_sized_new (FALSE, TRUE, sizeof(guint), 1); |
| 948 | g_datalist_id_set_data_full(&tf->trace->facilities_by_name, |
| 949 | fac->name, |
| 950 | fac_ids, ltt_fac_ids_destroy); |
| 951 | } |
| 952 | g_array_append_val(fac_ids, fac->id); |
| 953 | |
| 954 | break; |
| 955 | case LTT_EVENT_FACILITY_UNLOAD: |
| 956 | g_debug("Doing LTT_EVENT_FACILITY_UNLOAD"); |
| 957 | /* We don't care about unload : facilities ID are valid for the whole |
| 958 | * trace. They simply won't be used after the unload. */ |
| 959 | break; |
| 960 | case LTT_EVENT_STATE_DUMP_FACILITY_LOAD: |
| 961 | fac_name = (char*)(tf->event.data); |
| 962 | g_debug("Doing LTT_EVENT_STATE_DUMP_FACILITY_LOAD of facility %s", |
| 963 | fac_name); |
| 964 | fac_state_dump_load_data = |
| 965 | (struct LttStateDumpFacilityLoad *) |
| 966 | (tf->event.data + strlen(fac_name) + 1); |
| 967 | fac = &g_array_index (tf->trace->facilities_by_num, LttFacility, |
| 968 | ltt_get_uint32(LTT_GET_BO(tf), &fac_state_dump_load_data->id)); |
| 969 | g_assert(fac->exists == 0); |
| 970 | fac->name = g_quark_from_string(fac_name); |
| 971 | fac->checksum = ltt_get_uint32(LTT_GET_BO(tf), |
| 972 | &fac_state_dump_load_data->checksum); |
| 973 | fac->id = fac_state_dump_load_data->id; |
| 974 | fac->pointer_size = ltt_get_uint32(LTT_GET_BO(tf), |
| 975 | &fac_state_dump_load_data->pointer_size); |
| 976 | fac->long_size = ltt_get_uint32(LTT_GET_BO(tf), |
| 977 | &fac_state_dump_load_data->long_size); |
| 978 | fac->size_t_size = ltt_get_uint32(LTT_GET_BO(tf), |
| 979 | &fac_state_dump_load_data->size_t_size); |
| 980 | fac->alignment = ltt_get_uint32(LTT_GET_BO(tf), |
| 981 | &fac_state_dump_load_data->alignment); |
| 982 | if(ltt_get_facility_description(fac, tf->trace, tf)) |
| 983 | continue; /* error opening description */ |
| 984 | |
| 985 | fac->trace = tf->trace; |
| 986 | |
| 987 | /* Preset the field offsets */ |
| 988 | for(i=0; i<fac->events->len; i++){ |
| 989 | et = &g_array_index(fac->events, LttEventType, i); |
| 990 | set_fields_offsets(tf, et); |
| 991 | } |
| 992 | |
| 993 | fac->exists = 1; |
| 994 | |
| 995 | fac_ids = g_datalist_id_get_data(&tf->trace->facilities_by_name, |
| 996 | fac->name); |
| 997 | if(fac_ids == NULL) { |
| 998 | fac_ids = g_array_sized_new (FALSE, TRUE, sizeof(guint), 1); |
| 999 | g_datalist_id_set_data_full(&tf->trace->facilities_by_name, |
| 1000 | fac->name, |
| 1001 | fac_ids, ltt_fac_ids_destroy); |
| 1002 | } |
| 1003 | g_array_append_val(fac_ids, fac->id); |
| 1004 | |
| 1005 | break; |
| 1006 | case LTT_EVENT_HEARTBEAT: |
| 1007 | break; |
| 1008 | default: |
| 1009 | g_warning("Error in processing facility file %s, " |
| 1010 | "unknown event id %hhu in core facility.", |
| 1011 | g_quark_to_string(tf->name), |
| 1012 | tf->event.event_id); |
| 1013 | err = EPERM; |
| 1014 | goto event_id_error; |
| 1015 | } |
| 1016 | } |
| 1017 | } |
| 1018 | return 0; |
| 1019 | |
| 1020 | /* Error handling */ |
| 1021 | event_id_error: |
| 1022 | fac_id_error: |
| 1023 | update_error: |
| 1024 | seek_error: |
| 1025 | g_warning("An error occured in facility tracefile parsing"); |
| 1026 | return err; |
| 1027 | } |
| 1028 | |
| 1029 | |
| 1030 | LttTrace *ltt_trace_open(const gchar *pathname) |
| 1031 | { |
| 1032 | gchar abs_path[PATH_MAX]; |
| 1033 | LttTrace * t; |
| 1034 | LttTracefile *tf; |
| 1035 | GArray *group; |
| 1036 | int i, ret; |
| 1037 | struct ltt_block_start_header *header; |
| 1038 | DIR *dir; |
| 1039 | struct dirent *entry; |
| 1040 | guint control_found = 0; |
| 1041 | guint eventdefs_found = 0; |
| 1042 | struct stat stat_buf; |
| 1043 | gchar path[PATH_MAX]; |
| 1044 | |
| 1045 | t = g_new(LttTrace, 1); |
| 1046 | if(!t) goto alloc_error; |
| 1047 | |
| 1048 | get_absolute_pathname(pathname, abs_path); |
| 1049 | t->pathname = g_quark_from_string(abs_path); |
| 1050 | |
| 1051 | g_datalist_init(&t->tracefiles); |
| 1052 | |
| 1053 | /* Test to see if it looks like a trace */ |
| 1054 | dir = opendir(abs_path); |
| 1055 | if(dir == NULL) { |
| 1056 | perror(abs_path); |
| 1057 | goto open_error; |
| 1058 | } |
| 1059 | while((entry = readdir(dir)) != NULL) { |
| 1060 | strcpy(path, abs_path); |
| 1061 | strcat(path, "/"); |
| 1062 | strcat(path, entry->d_name); |
| 1063 | ret = stat(path, &stat_buf); |
| 1064 | if(ret == -1) { |
| 1065 | perror(path); |
| 1066 | continue; |
| 1067 | } |
| 1068 | if(S_ISDIR(stat_buf.st_mode)) { |
| 1069 | if(strcmp(entry->d_name, "control") == 0) { |
| 1070 | control_found = 1; |
| 1071 | } |
| 1072 | if(strcmp(entry->d_name, "eventdefs") == 0) { |
| 1073 | eventdefs_found = 1; |
| 1074 | } |
| 1075 | } |
| 1076 | } |
| 1077 | closedir(dir); |
| 1078 | |
| 1079 | if(!control_found || !eventdefs_found) goto find_error; |
| 1080 | |
| 1081 | /* Open all the tracefiles */ |
| 1082 | if(open_tracefiles(t, abs_path, "")) { |
| 1083 | g_warning("Error opening tracefile %s", abs_path); |
| 1084 | goto find_error; |
| 1085 | } |
| 1086 | |
| 1087 | /* Prepare the facilities containers : array and mapping */ |
| 1088 | /* Array is zeroed : the "exists" field is set to false by default */ |
| 1089 | t->facilities_by_num = g_array_sized_new (FALSE, |
| 1090 | TRUE, sizeof(LttFacility), |
| 1091 | NUM_FACILITIES); |
| 1092 | t->facilities_by_num = g_array_set_size(t->facilities_by_num, NUM_FACILITIES); |
| 1093 | |
| 1094 | g_datalist_init(&t->facilities_by_name); |
| 1095 | |
| 1096 | /* Parse each trace control/facilitiesN files : get runtime fac. info */ |
| 1097 | group = g_datalist_id_get_data(&t->tracefiles, LTT_TRACEFILE_NAME_FACILITIES); |
| 1098 | if(group == NULL) { |
| 1099 | g_error("Trace %s has no facility tracefile", abs_path); |
| 1100 | g_assert(0); |
| 1101 | goto facilities_error; |
| 1102 | } |
| 1103 | |
| 1104 | /* Get the trace information for the control/facility 0 tracefile */ |
| 1105 | g_assert(group->len > 0); |
| 1106 | tf = &g_array_index (group, LttTracefile, 0); |
| 1107 | header = (struct ltt_block_start_header*)tf->buffer.head; |
| 1108 | g_assert(parse_trace_header(header->trace, tf, t) == 0); |
| 1109 | |
| 1110 | t->num_cpu = group->len; |
| 1111 | |
| 1112 | for(i=0; i<group->len; i++) { |
| 1113 | tf = &g_array_index (group, LttTracefile, i); |
| 1114 | if(ltt_process_facility_tracefile(tf)) |
| 1115 | goto facilities_error; |
| 1116 | } |
| 1117 | |
| 1118 | return t; |
| 1119 | |
| 1120 | /* Error handling */ |
| 1121 | facilities_error: |
| 1122 | g_datalist_clear(&t->facilities_by_name); |
| 1123 | g_array_free(t->facilities_by_num, TRUE); |
| 1124 | find_error: |
| 1125 | g_datalist_clear(&t->tracefiles); |
| 1126 | open_error: |
| 1127 | g_free(t); |
| 1128 | alloc_error: |
| 1129 | return NULL; |
| 1130 | |
| 1131 | } |
| 1132 | |
| 1133 | GQuark ltt_trace_name(const LttTrace *t) |
| 1134 | { |
| 1135 | return t->pathname; |
| 1136 | } |
| 1137 | |
| 1138 | |
| 1139 | /****************************************************************************** |
| 1140 | * When we copy a trace, we want all the opening actions to happen again : |
| 1141 | * the trace will be reopened and totally independant from the original. |
| 1142 | * That's why we call ltt_trace_open. |
| 1143 | *****************************************************************************/ |
| 1144 | LttTrace *ltt_trace_copy(LttTrace *self) |
| 1145 | { |
| 1146 | return ltt_trace_open(g_quark_to_string(self->pathname)); |
| 1147 | } |
| 1148 | |
| 1149 | void ltt_trace_close(LttTrace *t) |
| 1150 | { |
| 1151 | guint i; |
| 1152 | LttFacility *fac; |
| 1153 | |
| 1154 | for(i=0; i<t->facilities_by_num->len; i++) { |
| 1155 | fac = &g_array_index (t->facilities_by_num, LttFacility, i); |
| 1156 | if(fac->exists) |
| 1157 | ltt_facility_close(fac); |
| 1158 | } |
| 1159 | |
| 1160 | g_datalist_clear(&t->facilities_by_name); |
| 1161 | g_array_free(t->facilities_by_num, TRUE); |
| 1162 | g_datalist_clear(&t->tracefiles); |
| 1163 | g_free(t); |
| 1164 | } |
| 1165 | |
| 1166 | |
| 1167 | /***************************************************************************** |
| 1168 | *Get the system description of the trace |
| 1169 | ****************************************************************************/ |
| 1170 | |
| 1171 | LttFacility *ltt_trace_facility_by_id(LttTrace *t, guint8 id) |
| 1172 | { |
| 1173 | g_assert(id < t->facilities_by_num->len); |
| 1174 | return &g_array_index(t->facilities_by_num, LttFacility, id); |
| 1175 | } |
| 1176 | |
| 1177 | /* ltt_trace_facility_get_by_name |
| 1178 | * |
| 1179 | * Returns the GArray of facility indexes. All the fac_ids that matches the |
| 1180 | * requested facility name. |
| 1181 | * |
| 1182 | * If name is not found, returns NULL. |
| 1183 | */ |
| 1184 | GArray *ltt_trace_facility_get_by_name(LttTrace *t, GQuark name) |
| 1185 | { |
| 1186 | return g_datalist_id_get_data(&t->facilities_by_name, name); |
| 1187 | } |
| 1188 | |
| 1189 | /***************************************************************************** |
| 1190 | * Functions to discover all the event types in the trace |
| 1191 | ****************************************************************************/ |
| 1192 | |
| 1193 | #if 0 |
| 1194 | unsigned ltt_trace_eventtype_number(LttTrace *t) |
| 1195 | { |
| 1196 | unsigned int i; |
| 1197 | unsigned count = 0; |
| 1198 | unsigned int num = t->facility_number; |
| 1199 | LttFacility * f; |
| 1200 | |
| 1201 | for(i=0;i<num;i++){ |
| 1202 | f = (LttFacility*)g_ptr_array_index(t->facilities, i); |
| 1203 | count += f->event_number; |
| 1204 | } |
| 1205 | return count; |
| 1206 | } |
| 1207 | #endif //0 |
| 1208 | |
| 1209 | #if 0 |
| 1210 | //use an iteration on all the trace facilities, and inside iteration on all the |
| 1211 | //event types in each facilities instead. |
| 1212 | LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned evId) |
| 1213 | { |
| 1214 | LttEventType *event_type; |
| 1215 | |
| 1216 | LttFacility * f; |
| 1217 | f = ltt_trace_facility_by_id(t,evId); |
| 1218 | |
| 1219 | if(unlikely(!f)) event_type = NULL; |
| 1220 | else event_type = f->events[evId - f->base_id]; |
| 1221 | |
| 1222 | return event_type; |
| 1223 | } |
| 1224 | #endif //0 |
| 1225 | |
| 1226 | #if 0 |
| 1227 | /***************************************************************************** |
| 1228 | * ltt_trace_find_tracefile |
| 1229 | * |
| 1230 | * Find a tracefile by name and index in the group. |
| 1231 | * |
| 1232 | * Returns a pointer to the tracefiles, else NULL. |
| 1233 | ****************************************************************************/ |
| 1234 | |
| 1235 | LttTracefile *ltt_trace_find_tracefile(LttTrace *t, const gchar *name) |
| 1236 | { |
| 1237 | } |
| 1238 | #endif //0 |
| 1239 | |
| 1240 | /***************************************************************************** |
| 1241 | * Get the start time and end time of the trace |
| 1242 | ****************************************************************************/ |
| 1243 | |
| 1244 | static void ltt_tracefile_time_span_get(LttTracefile *tf, |
| 1245 | LttTime *start, LttTime *end) |
| 1246 | { |
| 1247 | int err; |
| 1248 | |
| 1249 | err = map_block(tf, 0); |
| 1250 | if(unlikely(err)) { |
| 1251 | g_error("Can not map block"); |
| 1252 | *start = ltt_time_infinite; |
| 1253 | } else |
| 1254 | *start = tf->buffer.begin.timestamp; |
| 1255 | |
| 1256 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
| 1257 | if(unlikely(err)) { |
| 1258 | g_error("Can not map block"); |
| 1259 | *end = ltt_time_zero; |
| 1260 | } else |
| 1261 | *end = tf->buffer.end.timestamp; |
| 1262 | } |
| 1263 | |
| 1264 | struct tracefile_time_span_get_args { |
| 1265 | LttTrace *t; |
| 1266 | LttTime *start; |
| 1267 | LttTime *end; |
| 1268 | }; |
| 1269 | |
| 1270 | static void group_time_span_get(GQuark name, gpointer data, gpointer user_data) |
| 1271 | { |
| 1272 | struct tracefile_time_span_get_args *args = |
| 1273 | (struct tracefile_time_span_get_args*)user_data; |
| 1274 | |
| 1275 | GArray *group = (GArray *)data; |
| 1276 | int i; |
| 1277 | LttTracefile *tf; |
| 1278 | LttTime tmp_start; |
| 1279 | LttTime tmp_end; |
| 1280 | |
| 1281 | for(i=0; i<group->len; i++) { |
| 1282 | tf = &g_array_index (group, LttTracefile, i); |
| 1283 | if(tf->cpu_online) { |
| 1284 | ltt_tracefile_time_span_get(tf, &tmp_start, &tmp_end); |
| 1285 | if(ltt_time_compare(*args->start, tmp_start)>0) *args->start = tmp_start; |
| 1286 | if(ltt_time_compare(*args->end, tmp_end)<0) *args->end = tmp_end; |
| 1287 | } |
| 1288 | } |
| 1289 | } |
| 1290 | |
| 1291 | void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end) |
| 1292 | { |
| 1293 | LttTime min_start = ltt_time_infinite; |
| 1294 | LttTime max_end = ltt_time_zero; |
| 1295 | struct tracefile_time_span_get_args args = { t, &min_start, &max_end }; |
| 1296 | |
| 1297 | g_datalist_foreach(&t->tracefiles, &group_time_span_get, &args); |
| 1298 | |
| 1299 | if(start != NULL) *start = min_start; |
| 1300 | if(end != NULL) *end = max_end; |
| 1301 | |
| 1302 | } |
| 1303 | |
| 1304 | |
| 1305 | /***************************************************************************** |
| 1306 | *Get the name of a tracefile |
| 1307 | ****************************************************************************/ |
| 1308 | |
| 1309 | GQuark ltt_tracefile_name(LttTracefile *tf) |
| 1310 | { |
| 1311 | return tf->name; |
| 1312 | } |
| 1313 | |
| 1314 | |
| 1315 | guint ltt_tracefile_num(LttTracefile *tf) |
| 1316 | { |
| 1317 | return tf->cpu_num; |
| 1318 | } |
| 1319 | |
| 1320 | /***************************************************************************** |
| 1321 | * Get the number of blocks in the tracefile |
| 1322 | ****************************************************************************/ |
| 1323 | |
| 1324 | guint ltt_tracefile_block_number(LttTracefile *tf) |
| 1325 | { |
| 1326 | return tf->num_blocks; |
| 1327 | } |
| 1328 | |
| 1329 | |
| 1330 | /* Seek to the first event in a tracefile that has a time equal or greater than |
| 1331 | * the time passed in parameter. |
| 1332 | * |
| 1333 | * If the time parameter is outside the tracefile time span, seek to the first |
| 1334 | * event or if after, return ERANGE. |
| 1335 | * |
| 1336 | * If the time parameter is before the first event, we have to seek specially to |
| 1337 | * there. |
| 1338 | * |
| 1339 | * If the time is after the end of the trace, return ERANGE. |
| 1340 | * |
| 1341 | * Do a binary search to find the right block, then a sequential search in the |
| 1342 | * block to find the event. |
| 1343 | * |
| 1344 | * In the special case where the time requested fits inside a block that has no |
| 1345 | * event corresponding to the requested time, the first event of the next block |
| 1346 | * will be seeked. |
| 1347 | * |
| 1348 | * IMPORTANT NOTE : // FIXME everywhere... |
| 1349 | * |
| 1350 | * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time : |
| 1351 | * you will jump over an event if you do. |
| 1352 | * |
| 1353 | * Return value : 0 : no error, the tf->event can be used |
| 1354 | * ERANGE : time if after the last event of the trace |
| 1355 | * otherwise : this is an error. |
| 1356 | * |
| 1357 | * */ |
| 1358 | |
| 1359 | int ltt_tracefile_seek_time(LttTracefile *tf, LttTime time) |
| 1360 | { |
| 1361 | int ret = 0; |
| 1362 | int err; |
| 1363 | unsigned int block_num, high, low; |
| 1364 | |
| 1365 | /* seek at the beginning of trace */ |
| 1366 | err = map_block(tf, 0); /* First block */ |
| 1367 | if(unlikely(err)) { |
| 1368 | g_error("Can not map block"); |
| 1369 | goto fail; |
| 1370 | } |
| 1371 | |
| 1372 | /* If the time is lower or equal the beginning of the trace, |
| 1373 | * go to the first event. */ |
| 1374 | if(ltt_time_compare(time, tf->buffer.begin.timestamp) <= 0) { |
| 1375 | ret = ltt_tracefile_read(tf); |
| 1376 | if(ret == ERANGE) goto range; |
| 1377 | else if (ret) goto fail; |
| 1378 | goto found; /* There is either no event in the trace or the event points |
| 1379 | to the first event in the trace */ |
| 1380 | } |
| 1381 | |
| 1382 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
| 1383 | if(unlikely(err)) { |
| 1384 | g_error("Can not map block"); |
| 1385 | goto fail; |
| 1386 | } |
| 1387 | |
| 1388 | /* If the time is after the end of the trace, return ERANGE. */ |
| 1389 | if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
| 1390 | goto range; |
| 1391 | } |
| 1392 | |
| 1393 | /* Binary search the block */ |
| 1394 | high = tf->num_blocks - 1; |
| 1395 | low = 0; |
| 1396 | |
| 1397 | while(1) { |
| 1398 | block_num = ((high-low) / 2) + low; |
| 1399 | |
| 1400 | err = map_block(tf, block_num); |
| 1401 | if(unlikely(err)) { |
| 1402 | g_error("Can not map block"); |
| 1403 | goto fail; |
| 1404 | } |
| 1405 | if(high == low) { |
| 1406 | /* We cannot divide anymore : this is what would happen if the time |
| 1407 | * requested was exactly between two consecutive buffers'end and start |
| 1408 | * timestamps. This is also what would happend if we didn't deal with out |
| 1409 | * of span cases prior in this function. */ |
| 1410 | /* The event is right in the buffer! |
| 1411 | * (or in the next buffer first event) */ |
| 1412 | while(1) { |
| 1413 | ret = ltt_tracefile_read(tf); |
| 1414 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ |
| 1415 | else if(ret) goto fail; |
| 1416 | |
| 1417 | if(ltt_time_compare(time, tf->event.event_time) >= 0) |
| 1418 | goto found; |
| 1419 | } |
| 1420 | |
| 1421 | } else if(ltt_time_compare(time, tf->buffer.begin.timestamp) < 0) { |
| 1422 | /* go to lower part */ |
| 1423 | high = block_num; |
| 1424 | } else if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
| 1425 | /* go to higher part */ |
| 1426 | low = block_num; |
| 1427 | } else {/* The event is right in the buffer! |
| 1428 | (or in the next buffer first event) */ |
| 1429 | while(1) { |
| 1430 | ret = ltt_tracefile_read(tf); |
| 1431 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ |
| 1432 | else if(ret) goto fail; |
| 1433 | |
| 1434 | if(ltt_time_compare(time, tf->event.event_time) >= 0) |
| 1435 | break; |
| 1436 | } |
| 1437 | goto found; |
| 1438 | } |
| 1439 | } |
| 1440 | |
| 1441 | found: |
| 1442 | return 0; |
| 1443 | range: |
| 1444 | return ERANGE; |
| 1445 | |
| 1446 | /* Error handling */ |
| 1447 | fail: |
| 1448 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
| 1449 | g_quark_to_string(tf->name)); |
| 1450 | return EPERM; |
| 1451 | } |
| 1452 | |
| 1453 | |
| 1454 | int ltt_tracefile_seek_position(LttTracefile *tf, const LttEventPosition *ep) { |
| 1455 | |
| 1456 | int err; |
| 1457 | |
| 1458 | if(ep->tracefile != tf) { |
| 1459 | goto fail; |
| 1460 | } |
| 1461 | |
| 1462 | err = map_block(tf, ep->block); |
| 1463 | if(unlikely(err)) { |
| 1464 | g_error("Can not map block"); |
| 1465 | goto fail; |
| 1466 | } |
| 1467 | |
| 1468 | tf->event.offset = ep->offset; |
| 1469 | |
| 1470 | err = ltt_tracefile_read_update_event(tf); |
| 1471 | if(err) goto fail; |
| 1472 | err = ltt_tracefile_read_op(tf); |
| 1473 | if(err) goto fail; |
| 1474 | |
| 1475 | return 0; |
| 1476 | |
| 1477 | fail: |
| 1478 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
| 1479 | g_quark_to_string(tf->name)); |
| 1480 | return 1; |
| 1481 | } |
| 1482 | |
| 1483 | /* Calculate the real event time based on the buffer boundaries */ |
| 1484 | LttTime ltt_interpolate_time(LttTracefile *tf, LttEvent *event) |
| 1485 | { |
| 1486 | LttTime time; |
| 1487 | |
| 1488 | g_assert(tf->trace->has_tsc); |
| 1489 | |
| 1490 | time = ltt_time_from_uint64( |
| 1491 | (guint64)(tf->buffer.tsc - tf->buffer.begin.cycle_count) * |
| 1492 | tf->buffer.nsecs_per_cycle); |
| 1493 | time = ltt_time_add(tf->buffer.begin.timestamp, time); |
| 1494 | |
| 1495 | return time; |
| 1496 | } |
| 1497 | |
| 1498 | |
| 1499 | /* Get the current event of the tracefile : valid until the next read */ |
| 1500 | LttEvent *ltt_tracefile_get_event(LttTracefile *tf) |
| 1501 | { |
| 1502 | return &tf->event; |
| 1503 | } |
| 1504 | |
| 1505 | |
| 1506 | |
| 1507 | /***************************************************************************** |
| 1508 | *Function name |
| 1509 | * ltt_tracefile_read : Read the next event in the tracefile |
| 1510 | *Input params |
| 1511 | * t : tracefile |
| 1512 | *Return value |
| 1513 | * |
| 1514 | * Returns 0 if an event can be used in tf->event. |
| 1515 | * Returns ERANGE on end of trace. The event in tf->event still can be used |
| 1516 | * (if the last block was not empty). |
| 1517 | * Returns EPERM on error. |
| 1518 | * |
| 1519 | * This function does make the tracefile event structure point to the event |
| 1520 | * currently pointed to by the tf->event. |
| 1521 | * |
| 1522 | * Note : you must call a ltt_tracefile_seek to the beginning of the trace to |
| 1523 | * reinitialize it after an error if you want results to be coherent. |
| 1524 | * It would be the case if a end of trace last buffer has no event : the end |
| 1525 | * of trace wouldn't be returned, but an error. |
| 1526 | * We make the assumption there is at least one event per buffer. |
| 1527 | ****************************************************************************/ |
| 1528 | |
| 1529 | int ltt_tracefile_read(LttTracefile *tf) |
| 1530 | { |
| 1531 | int err; |
| 1532 | |
| 1533 | err = ltt_tracefile_read_seek(tf); |
| 1534 | if(err) return err; |
| 1535 | err = ltt_tracefile_read_update_event(tf); |
| 1536 | if(err) return err; |
| 1537 | err = ltt_tracefile_read_op(tf); |
| 1538 | if(err) return err; |
| 1539 | |
| 1540 | return 0; |
| 1541 | } |
| 1542 | |
| 1543 | int ltt_tracefile_read_seek(LttTracefile *tf) |
| 1544 | { |
| 1545 | int err; |
| 1546 | |
| 1547 | /* Get next buffer until we finally have an event, or end of trace */ |
| 1548 | while(1) { |
| 1549 | err = ltt_seek_next_event(tf); |
| 1550 | if(unlikely(err == ENOPROTOOPT)) { |
| 1551 | return EPERM; |
| 1552 | } |
| 1553 | |
| 1554 | /* Are we at the end of the buffer ? */ |
| 1555 | if(err == ERANGE) { |
| 1556 | if(unlikely(tf->buffer.index == tf->num_blocks-1)){ /* end of trace ? */ |
| 1557 | return ERANGE; |
| 1558 | } else { |
| 1559 | /* get next block */ |
| 1560 | err = map_block(tf, tf->buffer.index + 1); |
| 1561 | if(unlikely(err)) { |
| 1562 | g_error("Can not map block"); |
| 1563 | return EPERM; |
| 1564 | } |
| 1565 | } |
| 1566 | } else break; /* We found an event ! */ |
| 1567 | } |
| 1568 | |
| 1569 | return 0; |
| 1570 | } |
| 1571 | |
| 1572 | |
| 1573 | /* do specific operation on events */ |
| 1574 | int ltt_tracefile_read_op(LttTracefile *tf) |
| 1575 | { |
| 1576 | LttEvent *event; |
| 1577 | |
| 1578 | event = &tf->event; |
| 1579 | |
| 1580 | /* do event specific operation */ |
| 1581 | |
| 1582 | /* do something if its an heartbeat event : increment the heartbeat count */ |
| 1583 | //if(event->facility_id == LTT_FACILITY_CORE) |
| 1584 | // if(event->event_id == LTT_EVENT_HEARTBEAT) |
| 1585 | // tf->cur_heart_beat_number++; |
| 1586 | |
| 1587 | return 0; |
| 1588 | } |
| 1589 | |
| 1590 | |
| 1591 | /* same as ltt_tracefile_read, but does not seek to the next event nor call |
| 1592 | * event specific operation. */ |
| 1593 | int ltt_tracefile_read_update_event(LttTracefile *tf) |
| 1594 | { |
| 1595 | void * pos; |
| 1596 | LttEvent *event; |
| 1597 | |
| 1598 | event = &tf->event; |
| 1599 | pos = tf->buffer.head + event->offset; |
| 1600 | |
| 1601 | /* Read event header */ |
| 1602 | |
| 1603 | //TODO align |
| 1604 | |
| 1605 | if(tf->trace->has_tsc) { |
| 1606 | if(tf->trace->has_heartbeat) { |
| 1607 | event->time.timestamp = ltt_get_uint32(LTT_GET_BO(tf), |
| 1608 | pos); |
| 1609 | /* 32 bits -> 64 bits tsc */ |
| 1610 | /* note : still works for seek and non seek cases. */ |
| 1611 | if(event->time.timestamp < (0xFFFFFFFFULL&tf->buffer.tsc)) { |
| 1612 | tf->buffer.tsc = ((tf->buffer.tsc&0xFFFFFFFF00000000ULL) |
| 1613 | + 0x100000000ULL) |
| 1614 | | (guint64)event->time.timestamp; |
| 1615 | event->tsc = tf->buffer.tsc; |
| 1616 | } else { |
| 1617 | /* no overflow */ |
| 1618 | tf->buffer.tsc = (tf->buffer.tsc&0xFFFFFFFF00000000ULL) |
| 1619 | | (guint64)event->time.timestamp; |
| 1620 | event->tsc = tf->buffer.tsc; |
| 1621 | } |
| 1622 | pos += sizeof(guint32); |
| 1623 | } else { |
| 1624 | event->tsc = ltt_get_uint64(LTT_GET_BO(tf), pos); |
| 1625 | tf->buffer.tsc = event->tsc; |
| 1626 | pos += sizeof(guint64); |
| 1627 | } |
| 1628 | |
| 1629 | event->event_time = ltt_interpolate_time(tf, event); |
| 1630 | } else { |
| 1631 | event->time.delta.tv_sec = 0; |
| 1632 | event->time.delta.tv_nsec = ltt_get_uint32(LTT_GET_BO(tf), |
| 1633 | pos) * NSEC_PER_USEC; |
| 1634 | tf->buffer.tsc = 0; |
| 1635 | event->tsc = tf->buffer.tsc; |
| 1636 | |
| 1637 | event->event_time = ltt_time_add(tf->buffer.begin.timestamp, |
| 1638 | event->time.delta); |
| 1639 | pos += sizeof(guint32); |
| 1640 | } |
| 1641 | |
| 1642 | event->facility_id = *(guint8*)pos; |
| 1643 | pos += sizeof(guint8); |
| 1644 | |
| 1645 | event->event_id = *(guint8*)pos; |
| 1646 | pos += sizeof(guint8); |
| 1647 | |
| 1648 | event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos); |
| 1649 | pos += sizeof(guint16); |
| 1650 | |
| 1651 | event->data = pos; |
| 1652 | |
| 1653 | /* get the data size and update the event fields with the current |
| 1654 | * information */ |
| 1655 | ltt_update_event_size(tf); |
| 1656 | |
| 1657 | return 0; |
| 1658 | } |
| 1659 | |
| 1660 | |
| 1661 | /**************************************************************************** |
| 1662 | *Function name |
| 1663 | * map_block : map a block from the file |
| 1664 | *Input Params |
| 1665 | * lttdes : ltt trace file |
| 1666 | * whichBlock : the block which will be read |
| 1667 | *return value |
| 1668 | * 0 : success |
| 1669 | * EINVAL : lseek fail |
| 1670 | * EIO : can not read from the file |
| 1671 | ****************************************************************************/ |
| 1672 | |
| 1673 | static gint map_block(LttTracefile * tf, guint block_num) |
| 1674 | { |
| 1675 | int page_size = getpagesize(); |
| 1676 | struct ltt_block_start_header *header; |
| 1677 | |
| 1678 | g_assert(block_num < tf->num_blocks); |
| 1679 | |
| 1680 | if(tf->buffer.head != NULL) { |
| 1681 | if(munmap(tf->buffer.head, PAGE_ALIGN(tf->buf_size))) { |
| 1682 | g_warning("unmap size : %u\n", |
| 1683 | PAGE_ALIGN(tf->buf_size)); |
| 1684 | perror("munmap error"); |
| 1685 | g_assert(0); |
| 1686 | } |
| 1687 | } |
| 1688 | |
| 1689 | |
| 1690 | /* Multiple of pages aligned head */ |
| 1691 | tf->buffer.head = mmap(0, |
| 1692 | PAGE_ALIGN(tf->buf_size), |
| 1693 | PROT_READ, MAP_PRIVATE, tf->fd, |
| 1694 | PAGE_ALIGN((off_t)tf->buf_size * (off_t)block_num)); |
| 1695 | |
| 1696 | if(tf->buffer.head == MAP_FAILED) { |
| 1697 | perror("Error in allocating memory for buffer of tracefile"); |
| 1698 | g_assert(0); |
| 1699 | goto map_error; |
| 1700 | } |
| 1701 | g_assert( ( (guint)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
| 1702 | |
| 1703 | |
| 1704 | tf->buffer.index = block_num; |
| 1705 | |
| 1706 | header = (struct ltt_block_start_header*)tf->buffer.head; |
| 1707 | |
| 1708 | tf->buffer.begin.timestamp = ltt_get_time(LTT_GET_BO(tf), |
| 1709 | &header->begin.timestamp); |
| 1710 | tf->buffer.begin.timestamp.tv_nsec *= NSEC_PER_USEC; |
| 1711 | g_debug("block %u begin : %lu.%lu", block_num, |
| 1712 | tf->buffer.begin.timestamp.tv_sec, tf->buffer.begin.timestamp.tv_nsec); |
| 1713 | tf->buffer.begin.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
| 1714 | &header->begin.cycle_count); |
| 1715 | tf->buffer.end.timestamp = ltt_get_time(LTT_GET_BO(tf), |
| 1716 | &header->end.timestamp); |
| 1717 | tf->buffer.end.timestamp.tv_nsec *= NSEC_PER_USEC; |
| 1718 | g_debug("block %u end : %lu.%lu", block_num, |
| 1719 | tf->buffer.end.timestamp.tv_sec, tf->buffer.end.timestamp.tv_nsec); |
| 1720 | tf->buffer.end.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
| 1721 | &header->end.cycle_count); |
| 1722 | tf->buffer.lost_size = ltt_get_uint32(LTT_GET_BO(tf), |
| 1723 | &header->lost_size); |
| 1724 | |
| 1725 | tf->buffer.tsc = tf->buffer.begin.cycle_count; |
| 1726 | tf->event.tsc = tf->buffer.tsc; |
| 1727 | |
| 1728 | /* FIXME |
| 1729 | * eventually support variable buffer size : will need a partial pre-read of |
| 1730 | * the headers to create an index when we open the trace... eventually. */ |
| 1731 | g_assert(tf->buf_size == ltt_get_uint32(LTT_GET_BO(tf), |
| 1732 | &header->buf_size)); |
| 1733 | |
| 1734 | /* Now that the buffer is mapped, calculate the time interpolation for the |
| 1735 | * block. */ |
| 1736 | |
| 1737 | tf->buffer.nsecs_per_cycle = calc_nsecs_per_cycle(tf); |
| 1738 | |
| 1739 | /* Make the current event point to the beginning of the buffer : |
| 1740 | * it means that the event read must get the first event. */ |
| 1741 | tf->event.tracefile = tf; |
| 1742 | tf->event.block = block_num; |
| 1743 | tf->event.offset = 0; |
| 1744 | |
| 1745 | return 0; |
| 1746 | |
| 1747 | map_error: |
| 1748 | return -errno; |
| 1749 | |
| 1750 | } |
| 1751 | |
| 1752 | /* It will update the fields offsets too */ |
| 1753 | void ltt_update_event_size(LttTracefile *tf) |
| 1754 | { |
| 1755 | ssize_t size = 0; |
| 1756 | |
| 1757 | /* Specific handling of core events : necessary to read the facility control |
| 1758 | * tracefile. */ |
| 1759 | LttFacility *f = ltt_trace_get_facility_by_num(tf->trace, |
| 1760 | tf->event.facility_id); |
| 1761 | |
| 1762 | if(likely(tf->event.facility_id == LTT_FACILITY_CORE)) { |
| 1763 | switch((enum ltt_core_events)tf->event.event_id) { |
| 1764 | case LTT_EVENT_FACILITY_LOAD: |
| 1765 | size = strlen((char*)tf->event.data) + 1; |
| 1766 | g_debug("Update Event facility load of facility %s", (char*)tf->event.data); |
| 1767 | size += sizeof(struct LttFacilityLoad); |
| 1768 | break; |
| 1769 | case LTT_EVENT_FACILITY_UNLOAD: |
| 1770 | g_debug("Update Event facility unload"); |
| 1771 | size = sizeof(struct LttFacilityUnload); |
| 1772 | break; |
| 1773 | case LTT_EVENT_STATE_DUMP_FACILITY_LOAD: |
| 1774 | size = strlen((char*)tf->event.data) + 1; |
| 1775 | g_debug("Update Event facility load state dump of facility %s", |
| 1776 | (char*)tf->event.data); |
| 1777 | size += sizeof(struct LttStateDumpFacilityLoad); |
| 1778 | break; |
| 1779 | case LTT_EVENT_HEARTBEAT: |
| 1780 | g_debug("Update Event heartbeat"); |
| 1781 | size = sizeof(TimeHeartbeat); |
| 1782 | break; |
| 1783 | default: |
| 1784 | g_warning("Error in getting event size : tracefile %s, " |
| 1785 | "unknown event id %hhu in core facility.", |
| 1786 | g_quark_to_string(tf->name), |
| 1787 | tf->event.event_id); |
| 1788 | goto event_id_error; |
| 1789 | |
| 1790 | } |
| 1791 | } else { |
| 1792 | if(!f->exists) { |
| 1793 | g_error("Unknown facility %hhu (0x%hhx) in tracefile %s", |
| 1794 | tf->event.facility_id, |
| 1795 | tf->event.facility_id, |
| 1796 | g_quark_to_string(tf->name)); |
| 1797 | goto facility_error; |
| 1798 | } |
| 1799 | |
| 1800 | LttEventType *event_type = |
| 1801 | ltt_facility_eventtype_get(f, tf->event.event_id); |
| 1802 | |
| 1803 | if(!event_type) { |
| 1804 | g_error("Unknown event id %hhu in facility %s in tracefile %s", |
| 1805 | tf->event.event_id, |
| 1806 | g_quark_to_string(f->name), |
| 1807 | g_quark_to_string(tf->name)); |
| 1808 | goto event_type_error; |
| 1809 | } |
| 1810 | |
| 1811 | if(event_type->root_field) |
| 1812 | size = get_field_type_size(tf, event_type, |
| 1813 | 0, 0, event_type->root_field, tf->event.data); |
| 1814 | else |
| 1815 | size = 0; |
| 1816 | |
| 1817 | g_debug("Event root field : f.e %hhu.%hhu size %zd", |
| 1818 | tf->event.facility_id, |
| 1819 | tf->event.event_id, size); |
| 1820 | } |
| 1821 | |
| 1822 | tf->event.data_size = size; |
| 1823 | |
| 1824 | /* Check consistency between kernel and LTTV structure sizes */ |
| 1825 | g_assert(tf->event.data_size == tf->event.event_size); |
| 1826 | |
| 1827 | return; |
| 1828 | |
| 1829 | facility_error: |
| 1830 | event_type_error: |
| 1831 | event_id_error: |
| 1832 | tf->event.data_size = 0; |
| 1833 | } |
| 1834 | |
| 1835 | |
| 1836 | /* Take the tf current event offset and use the event facility id and event id |
| 1837 | * to figure out where is the next event offset. |
| 1838 | * |
| 1839 | * This is an internal function not aiming at being used elsewhere : it will |
| 1840 | * not jump over the current block limits. Please consider using |
| 1841 | * ltt_tracefile_read to do this. |
| 1842 | * |
| 1843 | * Returns 0 on success |
| 1844 | * ERANGE if we are at the end of the buffer. |
| 1845 | * ENOPROTOOPT if an error occured when getting the current event size. |
| 1846 | */ |
| 1847 | static int ltt_seek_next_event(LttTracefile *tf) |
| 1848 | { |
| 1849 | int ret = 0; |
| 1850 | void *pos; |
| 1851 | |
| 1852 | /* seek over the buffer header if we are at the buffer start */ |
| 1853 | if(tf->event.offset == 0) { |
| 1854 | tf->event.offset += sizeof(struct ltt_block_start_header); |
| 1855 | |
| 1856 | if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) { |
| 1857 | ret = ERANGE; |
| 1858 | } |
| 1859 | goto found; |
| 1860 | } |
| 1861 | |
| 1862 | |
| 1863 | pos = tf->event.data; |
| 1864 | |
| 1865 | if(tf->event.data_size < 0) goto error; |
| 1866 | |
| 1867 | pos += (size_t)tf->event.data_size; |
| 1868 | |
| 1869 | tf->event.offset = pos - tf->buffer.head; |
| 1870 | |
| 1871 | if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) { |
| 1872 | ret = ERANGE; |
| 1873 | goto found; |
| 1874 | } |
| 1875 | |
| 1876 | found: |
| 1877 | return ret; |
| 1878 | |
| 1879 | error: |
| 1880 | g_error("Error in ltt_seek_next_event for tracefile %s", |
| 1881 | g_quark_to_string(tf->name)); |
| 1882 | return ENOPROTOOPT; |
| 1883 | } |
| 1884 | |
| 1885 | |
| 1886 | /***************************************************************************** |
| 1887 | *Function name |
| 1888 | * calc_nsecs_per_cycle : calculate nsecs per cycle for current block |
| 1889 | *Input Params |
| 1890 | * t : tracefile |
| 1891 | ****************************************************************************/ |
| 1892 | |
| 1893 | static double calc_nsecs_per_cycle(LttTracefile * tf) |
| 1894 | { |
| 1895 | LttTime lBufTotalTime; /* Total time for this buffer */ |
| 1896 | double lBufTotalNSec; /* Total time for this buffer in nsecs */ |
| 1897 | LttCycleCount lBufTotalCycle;/* Total cycles for this buffer */ |
| 1898 | |
| 1899 | /* Calculate the total time for this buffer */ |
| 1900 | lBufTotalTime = ltt_time_sub(tf->buffer.end.timestamp, |
| 1901 | tf->buffer.begin.timestamp); |
| 1902 | |
| 1903 | /* Calculate the total cycles for this bufffer */ |
| 1904 | lBufTotalCycle = tf->buffer.end.cycle_count; |
| 1905 | lBufTotalCycle -= tf->buffer.begin.cycle_count; |
| 1906 | |
| 1907 | /* Convert the total time to double */ |
| 1908 | lBufTotalNSec = ltt_time_to_double(lBufTotalTime); |
| 1909 | |
| 1910 | return lBufTotalNSec / (double)lBufTotalCycle; |
| 1911 | |
| 1912 | } |
| 1913 | #if 0 |
| 1914 | void setFieldsOffset(LttTracefile *tf, LttEventType *evT,void *evD) |
| 1915 | { |
| 1916 | LttField * rootFld = evT->root_field; |
| 1917 | // rootFld->base_address = evD; |
| 1918 | |
| 1919 | if(likely(rootFld)) |
| 1920 | rootFld->field_size = getFieldtypeSize(tf, evT->facility, |
| 1921 | evT, 0,0,rootFld, evD); |
| 1922 | } |
| 1923 | #endif //0 |
| 1924 | |
| 1925 | /***************************************************************************** |
| 1926 | *Function name |
| 1927 | * set_fields_offsets : set the precomputable offset of the fields |
| 1928 | *Input params |
| 1929 | * tracefile : opened trace file |
| 1930 | * event_type : the event type |
| 1931 | ****************************************************************************/ |
| 1932 | |
| 1933 | void set_fields_offsets(LttTracefile *tf, LttEventType *event_type) |
| 1934 | { |
| 1935 | LttField *field = event_type->root_field; |
| 1936 | enum field_status fixed_root = FIELD_FIXED, fixed_parent = FIELD_FIXED; |
| 1937 | |
| 1938 | if(likely(field)) |
| 1939 | preset_field_type_size(tf, event_type, 0, 0, |
| 1940 | &fixed_root, &fixed_parent, |
| 1941 | field); |
| 1942 | |
| 1943 | } |
| 1944 | |
| 1945 | |
| 1946 | /***************************************************************************** |
| 1947 | *Function name |
| 1948 | * preset_field_type_size : set the fixed sizes of the field type |
| 1949 | *Input params |
| 1950 | * tf : tracefile |
| 1951 | * event_type : event type |
| 1952 | * offset_root : offset from the root |
| 1953 | * offset_parent : offset from the parent |
| 1954 | * fixed_root : Do we know a fixed offset to the root ? |
| 1955 | * fixed_parent : Do we know a fixed offset to the parent ? |
| 1956 | * field : field |
| 1957 | ****************************************************************************/ |
| 1958 | void preset_field_type_size(LttTracefile *tf, LttEventType *event_type, |
| 1959 | off_t offset_root, off_t offset_parent, |
| 1960 | enum field_status *fixed_root, enum field_status *fixed_parent, |
| 1961 | LttField *field) |
| 1962 | { |
| 1963 | enum field_status local_fixed_root, local_fixed_parent; |
| 1964 | guint i; |
| 1965 | LttType *type; |
| 1966 | |
| 1967 | g_assert(field->fixed_root == FIELD_UNKNOWN); |
| 1968 | g_assert(field->fixed_parent == FIELD_UNKNOWN); |
| 1969 | g_assert(field->fixed_size == FIELD_UNKNOWN); |
| 1970 | |
| 1971 | type = field->field_type; |
| 1972 | |
| 1973 | field->fixed_root = *fixed_root; |
| 1974 | if(field->fixed_root == FIELD_FIXED) |
| 1975 | field->offset_root = offset_root; |
| 1976 | else |
| 1977 | field->offset_root = 0; |
| 1978 | |
| 1979 | field->fixed_parent = *fixed_parent; |
| 1980 | if(field->fixed_parent == FIELD_FIXED) |
| 1981 | field->offset_parent = offset_parent; |
| 1982 | else |
| 1983 | field->offset_parent = 0; |
| 1984 | |
| 1985 | size_t current_root_offset; |
| 1986 | size_t current_offset; |
| 1987 | enum field_status current_child_status, final_child_status; |
| 1988 | size_t max_size; |
| 1989 | |
| 1990 | switch(type->type_class) { |
| 1991 | case LTT_INT: |
| 1992 | case LTT_UINT: |
| 1993 | case LTT_FLOAT: |
| 1994 | case LTT_ENUM: |
| 1995 | field->field_size = ltt_type_size(tf->trace, type); |
| 1996 | field->fixed_size = FIELD_FIXED; |
| 1997 | break; |
| 1998 | case LTT_POINTER: |
| 1999 | field->field_size = (off_t)event_type->facility->pointer_size; |
| 2000 | field->fixed_size = FIELD_FIXED; |
| 2001 | break; |
| 2002 | case LTT_LONG: |
| 2003 | case LTT_ULONG: |
| 2004 | field->field_size = (off_t)event_type->facility->long_size; |
| 2005 | field->fixed_size = FIELD_FIXED; |
| 2006 | break; |
| 2007 | case LTT_SIZE_T: |
| 2008 | case LTT_SSIZE_T: |
| 2009 | case LTT_OFF_T: |
| 2010 | field->field_size = (off_t)event_type->facility->size_t_size; |
| 2011 | field->fixed_size = FIELD_FIXED; |
| 2012 | break; |
| 2013 | case LTT_SEQUENCE: |
| 2014 | local_fixed_root = FIELD_VARIABLE; |
| 2015 | local_fixed_parent = FIELD_VARIABLE; |
| 2016 | preset_field_type_size(tf, event_type, |
| 2017 | 0, 0, |
| 2018 | &local_fixed_root, &local_fixed_parent, |
| 2019 | field->child[0]); |
| 2020 | field->fixed_size = FIELD_VARIABLE; |
| 2021 | field->field_size = 0; |
| 2022 | *fixed_root = FIELD_VARIABLE; |
| 2023 | *fixed_parent = FIELD_VARIABLE; |
| 2024 | break; |
| 2025 | case LTT_STRING: |
| 2026 | field->fixed_size = FIELD_VARIABLE; |
| 2027 | field->field_size = 0; |
| 2028 | *fixed_root = FIELD_VARIABLE; |
| 2029 | *fixed_parent = FIELD_VARIABLE; |
| 2030 | break; |
| 2031 | case LTT_ARRAY: |
| 2032 | local_fixed_root = FIELD_VARIABLE; |
| 2033 | local_fixed_parent = FIELD_VARIABLE; |
| 2034 | preset_field_type_size(tf, event_type, |
| 2035 | 0, 0, |
| 2036 | &local_fixed_root, &local_fixed_parent, |
| 2037 | field->child[0]); |
| 2038 | field->fixed_size = field->child[0]->fixed_size; |
| 2039 | if(field->fixed_size == FIELD_FIXED) { |
| 2040 | field->field_size = type->element_number * field->child[0]->field_size; |
| 2041 | } else { |
| 2042 | field->field_size = 0; |
| 2043 | *fixed_root = FIELD_VARIABLE; |
| 2044 | *fixed_parent = FIELD_VARIABLE; |
| 2045 | } |
| 2046 | break; |
| 2047 | case LTT_STRUCT: |
| 2048 | current_root_offset = field->offset_root; |
| 2049 | current_offset = 0; |
| 2050 | current_child_status = FIELD_FIXED; |
| 2051 | for(i=0;i<type->element_number;i++) { |
| 2052 | preset_field_type_size(tf, event_type, |
| 2053 | current_root_offset, current_offset, |
| 2054 | fixed_root, ¤t_child_status, |
| 2055 | field->child[i]); |
| 2056 | if(current_child_status == FIELD_FIXED) { |
| 2057 | current_root_offset += field->child[i]->field_size; |
| 2058 | current_offset += field->child[i]->field_size; |
| 2059 | } else { |
| 2060 | current_root_offset = 0; |
| 2061 | current_offset = 0; |
| 2062 | } |
| 2063 | } |
| 2064 | if(current_child_status != FIELD_FIXED) { |
| 2065 | *fixed_parent = current_child_status; |
| 2066 | field->field_size = 0; |
| 2067 | field->fixed_size = current_child_status; |
| 2068 | } else { |
| 2069 | field->field_size = current_offset; |
| 2070 | field->fixed_size = FIELD_FIXED; |
| 2071 | } |
| 2072 | break; |
| 2073 | case LTT_UNION: |
| 2074 | current_root_offset = field->offset_root; |
| 2075 | current_offset = 0; |
| 2076 | max_size = 0; |
| 2077 | final_child_status = FIELD_FIXED; |
| 2078 | for(i=0;i<type->element_number;i++) { |
| 2079 | enum field_status current_root_child_status = FIELD_FIXED; |
| 2080 | enum field_status current_child_status = FIELD_FIXED; |
| 2081 | preset_field_type_size(tf, event_type, |
| 2082 | current_root_offset, current_offset, |
| 2083 | ¤t_root_child_status, ¤t_child_status, |
| 2084 | field->child[i]); |
| 2085 | if(current_child_status != FIELD_FIXED) |
| 2086 | final_child_status = current_child_status; |
| 2087 | else |
| 2088 | max_size = max(max_size, field->child[i]->field_size); |
| 2089 | } |
| 2090 | if(final_child_status != FIELD_FIXED) { |
| 2091 | *fixed_root = final_child_status; |
| 2092 | *fixed_parent = final_child_status; |
| 2093 | field->field_size = 0; |
| 2094 | field->fixed_size = current_child_status; |
| 2095 | } else { |
| 2096 | field->field_size = max_size; |
| 2097 | field->fixed_size = FIELD_FIXED; |
| 2098 | } |
| 2099 | break; |
| 2100 | } |
| 2101 | |
| 2102 | } |
| 2103 | |
| 2104 | |
| 2105 | /***************************************************************************** |
| 2106 | *Function name |
| 2107 | * check_fields_compatibility : Check for compatibility between two fields : |
| 2108 | * do they use the same inner structure ? |
| 2109 | *Input params |
| 2110 | * event_type1 : event type |
| 2111 | * event_type2 : event type |
| 2112 | * field1 : field |
| 2113 | * field2 : field |
| 2114 | *Returns : 0 if identical |
| 2115 | * 1 if not. |
| 2116 | ****************************************************************************/ |
| 2117 | gint check_fields_compatibility(LttEventType *event_type1, |
| 2118 | LttEventType *event_type2, |
| 2119 | LttField *field1, LttField *field2) |
| 2120 | { |
| 2121 | guint different = 0; |
| 2122 | guint i; |
| 2123 | LttType *type1; |
| 2124 | LttType *type2; |
| 2125 | |
| 2126 | if(field1 == NULL) { |
| 2127 | if(field2 == NULL) goto end; |
| 2128 | else { |
| 2129 | different = 1; |
| 2130 | goto end; |
| 2131 | } |
| 2132 | } else if(field2 == NULL) { |
| 2133 | different = 1; |
| 2134 | goto end; |
| 2135 | } |
| 2136 | |
| 2137 | g_assert(field1->fixed_root != FIELD_UNKNOWN); |
| 2138 | g_assert(field2->fixed_root != FIELD_UNKNOWN); |
| 2139 | g_assert(field1->fixed_parent != FIELD_UNKNOWN); |
| 2140 | g_assert(field2->fixed_parent != FIELD_UNKNOWN); |
| 2141 | g_assert(field1->fixed_size != FIELD_UNKNOWN); |
| 2142 | g_assert(field2->fixed_size != FIELD_UNKNOWN); |
| 2143 | |
| 2144 | type1 = field1->field_type; |
| 2145 | type2 = field2->field_type; |
| 2146 | |
| 2147 | if(type1->type_class != type2->type_class) { |
| 2148 | different = 1; |
| 2149 | goto end; |
| 2150 | } |
| 2151 | if(type1->element_name != type2->element_name) { |
| 2152 | different = 1; |
| 2153 | goto end; |
| 2154 | } |
| 2155 | |
| 2156 | switch(type1->type_class) { |
| 2157 | case LTT_INT: |
| 2158 | case LTT_UINT: |
| 2159 | case LTT_FLOAT: |
| 2160 | case LTT_POINTER: |
| 2161 | case LTT_LONG: |
| 2162 | case LTT_ULONG: |
| 2163 | case LTT_SIZE_T: |
| 2164 | case LTT_SSIZE_T: |
| 2165 | case LTT_OFF_T: |
| 2166 | if(field1->field_size != field2->field_size) { |
| 2167 | different = 1; |
| 2168 | goto end; |
| 2169 | } |
| 2170 | break; |
| 2171 | case LTT_ENUM: |
| 2172 | if(type1->element_number != type2->element_number) { |
| 2173 | different = 1; |
| 2174 | goto end; |
| 2175 | } |
| 2176 | for(i=0;i<type1->element_number;i++) { |
| 2177 | if(type1->enum_strings[i] != type2->enum_strings[i]) { |
| 2178 | different = 1; |
| 2179 | goto end; |
| 2180 | } |
| 2181 | } |
| 2182 | break; |
| 2183 | case LTT_SEQUENCE: |
| 2184 | /* Two elements : size and child */ |
| 2185 | g_assert(type1->element_number != type2->element_number); |
| 2186 | for(i=0;i<type1->element_number;i++) { |
| 2187 | if(check_fields_compatibility(event_type1, event_type2, |
| 2188 | field1->child[0], field2->child[0])) { |
| 2189 | different = 1; |
| 2190 | goto end; |
| 2191 | } |
| 2192 | } |
| 2193 | break; |
| 2194 | case LTT_STRING: |
| 2195 | break; |
| 2196 | case LTT_ARRAY: |
| 2197 | if(field1->field_size != field2->field_size) { |
| 2198 | different = 1; |
| 2199 | goto end; |
| 2200 | } |
| 2201 | /* Two elements : size and child */ |
| 2202 | g_assert(type1->element_number != type2->element_number); |
| 2203 | for(i=0;i<type1->element_number;i++) { |
| 2204 | if(check_fields_compatibility(event_type1, event_type2, |
| 2205 | field1->child[0], field2->child[0])) { |
| 2206 | different = 1; |
| 2207 | goto end; |
| 2208 | } |
| 2209 | } |
| 2210 | break; |
| 2211 | case LTT_STRUCT: |
| 2212 | case LTT_UNION: |
| 2213 | if(type1->element_number != type2->element_number) { |
| 2214 | different = 1; |
| 2215 | break; |
| 2216 | } |
| 2217 | for(i=0;i<type1->element_number;i++) { |
| 2218 | if(check_fields_compatibility(event_type1, event_type2, |
| 2219 | field1->child[0], field2->child[0])) { |
| 2220 | different = 1; |
| 2221 | goto end; |
| 2222 | } |
| 2223 | } |
| 2224 | break; |
| 2225 | } |
| 2226 | end: |
| 2227 | return different; |
| 2228 | } |
| 2229 | |
| 2230 | |
| 2231 | |
| 2232 | |
| 2233 | #if 0 |
| 2234 | /***************************************************************************** |
| 2235 | *Function name |
| 2236 | * getFieldtypeSize: get the size of the field type (primitive type) |
| 2237 | *Input params |
| 2238 | * evT : event type |
| 2239 | * offsetRoot : offset from the root |
| 2240 | * offsetParent : offset from the parrent |
| 2241 | * fld : field |
| 2242 | * evD : event data, it may be NULL |
| 2243 | *Return value |
| 2244 | * int : size of the field |
| 2245 | ****************************************************************************/ |
| 2246 | |
| 2247 | static inline gint getFieldtypeSize(LttTracefile *tf, |
| 2248 | LttEventType * evT, gint offsetRoot, |
| 2249 | gint offsetParent, LttField * fld, void *evD) |
| 2250 | { |
| 2251 | gint size, size1, element_number, i, offset1, offset2; |
| 2252 | LttType * type = fld->field_type; |
| 2253 | |
| 2254 | /* This likely has been tested with gcov : half of them.. */ |
| 2255 | if(unlikely(fld->field_fixed == 1)){ |
| 2256 | /* tested : none */ |
| 2257 | if(unlikely(fld == evT->root_field)) { |
| 2258 | size = fld->field_size; |
| 2259 | goto end_getFieldtypeSize; |
| 2260 | } |
| 2261 | } |
| 2262 | |
| 2263 | /* From gcov profiling : half string, half struct, can we gain something |
| 2264 | * from that ? (Mathieu) */ |
| 2265 | switch(type->type_class) { |
| 2266 | case LTT_ARRAY: |
| 2267 | element_number = (int) type->element_number; |
| 2268 | if(fld->field_fixed == -1){ |
| 2269 | size = getFieldtypeSize(tf, evT, offsetRoot, |
| 2270 | 0,fld->child[0], NULL); |
| 2271 | if(size == 0){ //has string or sequence |
| 2272 | fld->field_fixed = 0; |
| 2273 | }else{ |
| 2274 | fld->field_fixed = 1; |
| 2275 | size *= element_number; |
| 2276 | } |
| 2277 | }else if(fld->field_fixed == 0){// has string or sequence |
| 2278 | size = 0; |
| 2279 | for(i=0;i<element_number;i++){ |
| 2280 | size += getFieldtypeSize(tf, evT, offsetRoot+size,size, |
| 2281 | fld->child[0], evD+size); |
| 2282 | } |
| 2283 | }else size = fld->field_size; |
| 2284 | if(unlikely(!evD)){ |
| 2285 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 2286 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 2287 | } |
| 2288 | |
| 2289 | break; |
| 2290 | |
| 2291 | case LTT_SEQUENCE: |
| 2292 | size1 = (int) ltt_type_size(fac, type); |
| 2293 | if(fld->field_fixed == -1){ |
| 2294 | fld->sequ_number_size = size1; |
| 2295 | fld->field_fixed = 0; |
| 2296 | size = getFieldtypeSize(evT, offsetRoot, |
| 2297 | 0,fld->child[0], NULL); |
| 2298 | fld->element_size = size; |
| 2299 | }else{//0: sequence |
| 2300 | element_number = getIntNumber(tf,size1,evD); |
| 2301 | type->element_number = element_number; |
| 2302 | if(fld->element_size > 0){ |
| 2303 | size = element_number * fld->element_size; |
| 2304 | }else{//sequence has string or sequence |
| 2305 | size = 0; |
| 2306 | for(i=0;i<element_number;i++){ |
| 2307 | size += getFieldtypeSize(tf, evT, |
| 2308 | offsetRoot+size+size1,size+size1, |
| 2309 | fld->child[0], evD+size+size1); |
| 2310 | } |
| 2311 | } |
| 2312 | size += size1; |
| 2313 | } |
| 2314 | if(unlikely(!evD)){ |
| 2315 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 2316 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 2317 | } |
| 2318 | |
| 2319 | break; |
| 2320 | |
| 2321 | case LTT_STRING: |
| 2322 | size = 0; |
| 2323 | if(fld->field_fixed == -1){ |
| 2324 | fld->field_fixed = 0; |
| 2325 | }else{//0: string |
| 2326 | /* Hope my implementation is faster than strlen (Mathieu) */ |
| 2327 | char *ptr=(char*)evD; |
| 2328 | size = 1; |
| 2329 | /* from gcov : many many strings are empty, make it the common case.*/ |
| 2330 | while(unlikely(*ptr != '\0')) { size++; ptr++; } |
| 2331 | //size = ptr - (char*)evD + 1; //include end : '\0' |
| 2332 | } |
| 2333 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 2334 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 2335 | |
| 2336 | break; |
| 2337 | |
| 2338 | case LTT_STRUCT: |
| 2339 | element_number = (int) type->element_number; |
| 2340 | size = 0; |
| 2341 | /* tested with gcov */ |
| 2342 | if(unlikely(fld->field_fixed == -1)){ |
| 2343 | offset1 = offsetRoot; |
| 2344 | offset2 = 0; |
| 2345 | for(i=0;i<element_number;i++){ |
| 2346 | size1=getFieldtypeSize(tf, evT,offset1,offset2, |
| 2347 | fld->child[i], NULL); |
| 2348 | if(likely(size1 > 0 && size >= 0)){ |
| 2349 | size += size1; |
| 2350 | if(likely(offset1 >= 0)) offset1 += size1; |
| 2351 | offset2 += size1; |
| 2352 | }else{ |
| 2353 | size = -1; |
| 2354 | offset1 = -1; |
| 2355 | offset2 = -1; |
| 2356 | } |
| 2357 | } |
| 2358 | if(unlikely(size == -1)){ |
| 2359 | fld->field_fixed = 0; |
| 2360 | size = 0; |
| 2361 | }else fld->field_fixed = 1; |
| 2362 | }else if(likely(fld->field_fixed == 0)){ |
| 2363 | offset1 = offsetRoot; |
| 2364 | offset2 = 0; |
| 2365 | for(i=0;unlikely(i<element_number);i++){ |
| 2366 | size=getFieldtypeSize(tf, evT, offset1, offset2, |
| 2367 | fld->child[i], evD+offset2); |
| 2368 | offset1 += size; |
| 2369 | offset2 += size; |
| 2370 | } |
| 2371 | size = offset2; |
| 2372 | }else size = fld->field_size; |
| 2373 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 2374 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 2375 | break; |
| 2376 | |
| 2377 | default: |
| 2378 | if(unlikely(fld->field_fixed == -1)){ |
| 2379 | size = (int) ltt_type_size(LTT_GET_BO(tf), type); |
| 2380 | fld->field_fixed = 1; |
| 2381 | }else size = fld->field_size; |
| 2382 | if(unlikely(!evD)){ |
| 2383 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
| 2384 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
| 2385 | } |
| 2386 | break; |
| 2387 | } |
| 2388 | |
| 2389 | fld->offset_root = offsetRoot; |
| 2390 | fld->offset_parent = offsetParent; |
| 2391 | fld->field_size = size; |
| 2392 | |
| 2393 | end_getFieldtypeSize: |
| 2394 | |
| 2395 | return size; |
| 2396 | } |
| 2397 | #endif //0 |
| 2398 | |
| 2399 | /***************************************************************************** |
| 2400 | *Function name |
| 2401 | * ltt_get_int : get an integer number |
| 2402 | *Input params |
| 2403 | * reverse_byte_order: must we reverse the byte order ? |
| 2404 | * size : the size of the integer |
| 2405 | * ptr : the data pointer |
| 2406 | *Return value |
| 2407 | * gint64 : a 64 bits integer |
| 2408 | ****************************************************************************/ |
| 2409 | |
| 2410 | gint64 ltt_get_int(gboolean reverse_byte_order, gint size, void *data) |
| 2411 | { |
| 2412 | gint64 val; |
| 2413 | |
| 2414 | switch(size) { |
| 2415 | case 1: val = *((gint8*)data); break; |
| 2416 | case 2: val = ltt_get_int16(reverse_byte_order, data); break; |
| 2417 | case 4: val = ltt_get_int32(reverse_byte_order, data); break; |
| 2418 | case 8: val = ltt_get_int64(reverse_byte_order, data); break; |
| 2419 | default: val = ltt_get_int64(reverse_byte_order, data); |
| 2420 | g_critical("get_int : integer size %d unknown", size); |
| 2421 | break; |
| 2422 | } |
| 2423 | |
| 2424 | return val; |
| 2425 | } |
| 2426 | |
| 2427 | /***************************************************************************** |
| 2428 | *Function name |
| 2429 | * ltt_get_uint : get an unsigned integer number |
| 2430 | *Input params |
| 2431 | * reverse_byte_order: must we reverse the byte order ? |
| 2432 | * size : the size of the integer |
| 2433 | * ptr : the data pointer |
| 2434 | *Return value |
| 2435 | * guint64 : a 64 bits unsigned integer |
| 2436 | ****************************************************************************/ |
| 2437 | |
| 2438 | guint64 ltt_get_uint(gboolean reverse_byte_order, gint size, void *data) |
| 2439 | { |
| 2440 | guint64 val; |
| 2441 | |
| 2442 | switch(size) { |
| 2443 | case 1: val = *((gint8*)data); break; |
| 2444 | case 2: val = ltt_get_uint16(reverse_byte_order, data); break; |
| 2445 | case 4: val = ltt_get_uint32(reverse_byte_order, data); break; |
| 2446 | case 8: val = ltt_get_uint64(reverse_byte_order, data); break; |
| 2447 | default: val = ltt_get_uint64(reverse_byte_order, data); |
| 2448 | g_critical("get_uint : unsigned integer size %d unknown", |
| 2449 | size); |
| 2450 | break; |
| 2451 | } |
| 2452 | |
| 2453 | return val; |
| 2454 | } |
| 2455 | |
| 2456 | |
| 2457 | /* get the node name of the system */ |
| 2458 | |
| 2459 | char * ltt_trace_system_description_node_name (LttSystemDescription * s) |
| 2460 | { |
| 2461 | return s->node_name; |
| 2462 | } |
| 2463 | |
| 2464 | |
| 2465 | /* get the domain name of the system */ |
| 2466 | |
| 2467 | char * ltt_trace_system_description_domain_name (LttSystemDescription * s) |
| 2468 | { |
| 2469 | return s->domain_name; |
| 2470 | } |
| 2471 | |
| 2472 | |
| 2473 | /* get the description of the system */ |
| 2474 | |
| 2475 | char * ltt_trace_system_description_description (LttSystemDescription * s) |
| 2476 | { |
| 2477 | return s->description; |
| 2478 | } |
| 2479 | |
| 2480 | |
| 2481 | /* get the start time of the trace */ |
| 2482 | |
| 2483 | LttTime ltt_trace_system_description_trace_start_time(LttSystemDescription *s) |
| 2484 | { |
| 2485 | return s->trace_start; |
| 2486 | } |
| 2487 | |
| 2488 | |
| 2489 | LttTracefile *ltt_tracefile_new() |
| 2490 | { |
| 2491 | return g_new(LttTracefile, 1); |
| 2492 | } |
| 2493 | |
| 2494 | void ltt_tracefile_destroy(LttTracefile *tf) |
| 2495 | { |
| 2496 | g_free(tf); |
| 2497 | } |
| 2498 | |
| 2499 | void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src) |
| 2500 | { |
| 2501 | *dest = *src; |
| 2502 | } |
| 2503 | |
| 2504 | /* Before library loading... */ |
| 2505 | |
| 2506 | static void __attribute__((constructor)) init(void) |
| 2507 | { |
| 2508 | LTT_FACILITY_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); |
| 2509 | LTT_EVENT_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); |
| 2510 | |
| 2511 | LTT_TRACEFILE_NAME_FACILITIES = g_quark_from_string("/control/facilities"); |
| 2512 | } |
| 2513 | |