| 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 library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License Version 2.1 as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This library 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 GNU |
| 13 | * Lesser General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU Lesser General Public |
| 16 | * License along with this library; if not, write to the |
| 17 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 18 | * Boston, 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 | #include <string.h> |
| 38 | |
| 39 | // For realpath |
| 40 | #include <limits.h> |
| 41 | #include <stdlib.h> |
| 42 | |
| 43 | |
| 44 | #include <ltt/ltt.h> |
| 45 | #include "ltt-private.h" |
| 46 | #include <ltt/trace.h> |
| 47 | #include <ltt/event.h> |
| 48 | //#include <ltt/type.h> |
| 49 | #include <ltt/ltt-types.h> |
| 50 | #include <ltt/marker.h> |
| 51 | |
| 52 | /* Facility names used in this file */ |
| 53 | |
| 54 | GQuark LTT_FACILITY_NAME_HEARTBEAT, |
| 55 | LTT_EVENT_NAME_HEARTBEAT, |
| 56 | LTT_EVENT_NAME_HEARTBEAT_FULL; |
| 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 | LttTrace *father_trace = NULL; |
| 80 | |
| 81 | /* set the offset of the fields belonging to the event, |
| 82 | need the information of the archecture */ |
| 83 | //void set_fields_offsets(LttTracefile *tf, LttEventType *event_type); |
| 84 | //size_t get_fields_offsets(LttTracefile *tf, LttEventType *event_type, void *data); |
| 85 | |
| 86 | /* get the size of the field type according to |
| 87 | * The facility size information. */ |
| 88 | #if 0 |
| 89 | static inline void preset_field_type_size(LttTracefile *tf, |
| 90 | LttEventType *event_type, |
| 91 | off_t offset_root, off_t offset_parent, |
| 92 | enum field_status *fixed_root, enum field_status *fixed_parent, |
| 93 | LttField *field); |
| 94 | #endif //0 |
| 95 | |
| 96 | /* map a fixed size or a block information from the file (fd) */ |
| 97 | static gint map_block(LttTracefile * tf, guint block_num); |
| 98 | |
| 99 | /* calculate nsec per cycles for current block */ |
| 100 | #if 0 |
| 101 | static guint32 calc_nsecs_per_cycle(LttTracefile * t); |
| 102 | static guint64 cycles_2_ns(LttTracefile *tf, guint64 cycles); |
| 103 | #endif //0 |
| 104 | |
| 105 | /* go to the next event */ |
| 106 | static int ltt_seek_next_event(LttTracefile *tf); |
| 107 | |
| 108 | //void ltt_update_event_size(LttTracefile *tf); |
| 109 | |
| 110 | static int open_tracefiles(LttTrace *trace, gchar *root_path, |
| 111 | gchar *relative_path); |
| 112 | static int ltt_process_facility_tracefile(LttTracefile *tf); |
| 113 | static void ltt_tracefile_time_span_get(LttTracefile *tf, |
| 114 | LttTime *start, LttTime *end); |
| 115 | static void group_time_span_get(GQuark name, gpointer data, gpointer user_data); |
| 116 | static gint map_block(LttTracefile * tf, guint block_num); |
| 117 | static int ltt_seek_next_event(LttTracefile *tf); |
| 118 | static void __attribute__((constructor)) init(void); |
| 119 | static void ltt_update_event_size(LttTracefile *tf); |
| 120 | |
| 121 | /* Enable event debugging */ |
| 122 | static int a_event_debug = 0; |
| 123 | |
| 124 | void ltt_event_debug(int state) |
| 125 | { |
| 126 | a_event_debug = state; |
| 127 | } |
| 128 | |
| 129 | //void precompute_offsets(LttFacility *fac, LttEventType *event); |
| 130 | |
| 131 | #if 0 |
| 132 | /* Functions to parse system.xml file (using glib xml parser) */ |
| 133 | static void parser_start_element (GMarkupParseContext __UNUSED__ *context, |
| 134 | const gchar *element_name, |
| 135 | const gchar **attribute_names, |
| 136 | const gchar **attribute_values, |
| 137 | gpointer user_data, |
| 138 | GError **error) |
| 139 | { |
| 140 | int i=0; |
| 141 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
| 142 | if(strcmp("system", element_name)){ |
| 143 | *error = g_error_new(G_MARKUP_ERROR, |
| 144 | G_LOG_LEVEL_WARNING, |
| 145 | "This is not system.xml file"); |
| 146 | return; |
| 147 | } |
| 148 | |
| 149 | while(attribute_names[i]){ |
| 150 | if(strcmp("node_name", attribute_names[i])==0){ |
| 151 | des->node_name = g_strdup(attribute_values[i]); |
| 152 | }else if(strcmp("domainname", attribute_names[i])==0){ |
| 153 | des->domain_name = g_strdup(attribute_values[i]); |
| 154 | }else if(strcmp("cpu", attribute_names[i])==0){ |
| 155 | des->nb_cpu = atoi(attribute_values[i]); |
| 156 | }else if(strcmp("arch_size", attribute_names[i])==0){ |
| 157 | if(strcmp(attribute_values[i],"LP32") == 0) des->size = LTT_LP32; |
| 158 | else if(strcmp(attribute_values[i],"ILP32") == 0) des->size = LTT_ILP32; |
| 159 | else if(strcmp(attribute_values[i],"LP64") == 0) des->size = LTT_LP64; |
| 160 | else if(strcmp(attribute_values[i],"ILP64") == 0) des->size = LTT_ILP64; |
| 161 | else if(strcmp(attribute_values[i],"UNKNOWN") == 0) des->size = LTT_UNKNOWN; |
| 162 | }else if(strcmp("endian", attribute_names[i])==0){ |
| 163 | if(strcmp(attribute_values[i],"LITTLE_ENDIAN") == 0) |
| 164 | des->endian = LTT_LITTLE_ENDIAN; |
| 165 | else if(strcmp(attribute_values[i],"BIG_ENDIAN") == 0) |
| 166 | des->endian = LTT_BIG_ENDIAN; |
| 167 | }else if(strcmp("kernel_name", attribute_names[i])==0){ |
| 168 | des->kernel_name = g_strdup(attribute_values[i]); |
| 169 | }else if(strcmp("kernel_release", attribute_names[i])==0){ |
| 170 | des->kernel_release = g_strdup(attribute_values[i]); |
| 171 | }else if(strcmp("kernel_version", attribute_names[i])==0){ |
| 172 | des->kernel_version = g_strdup(attribute_values[i]); |
| 173 | }else if(strcmp("machine", attribute_names[i])==0){ |
| 174 | des->machine = g_strdup(attribute_values[i]); |
| 175 | }else if(strcmp("processor", attribute_names[i])==0){ |
| 176 | des->processor = g_strdup(attribute_values[i]); |
| 177 | }else if(strcmp("hardware_platform", attribute_names[i])==0){ |
| 178 | des->hardware_platform = g_strdup(attribute_values[i]); |
| 179 | }else if(strcmp("operating_system", attribute_names[i])==0){ |
| 180 | des->operating_system = g_strdup(attribute_values[i]); |
| 181 | }else if(strcmp("ltt_major_version", attribute_names[i])==0){ |
| 182 | des->ltt_major_version = atoi(attribute_values[i]); |
| 183 | }else if(strcmp("ltt_minor_version", attribute_names[i])==0){ |
| 184 | des->ltt_minor_version = atoi(attribute_values[i]); |
| 185 | }else if(strcmp("ltt_block_size", attribute_names[i])==0){ |
| 186 | des->ltt_block_size = atoi(attribute_values[i]); |
| 187 | }else{ |
| 188 | *error = g_error_new(G_MARKUP_ERROR, |
| 189 | G_LOG_LEVEL_WARNING, |
| 190 | "Not a valid attribute"); |
| 191 | return; |
| 192 | } |
| 193 | i++; |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | static void parser_characters (GMarkupParseContext __UNUSED__ *context, |
| 198 | const gchar *text, |
| 199 | gsize __UNUSED__ text_len, |
| 200 | gpointer user_data, |
| 201 | GError __UNUSED__ **error) |
| 202 | { |
| 203 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
| 204 | des->description = g_strdup(text); |
| 205 | } |
| 206 | #endif //0 |
| 207 | |
| 208 | #if 0 |
| 209 | LttFacility *ltt_trace_get_facility_by_num(LttTrace *t, |
| 210 | guint num) |
| 211 | { |
| 212 | g_assert(num < t->facilities_by_num->len); |
| 213 | |
| 214 | return &g_array_index(t->facilities_by_num, LttFacility, num); |
| 215 | |
| 216 | } |
| 217 | #endif //0 |
| 218 | |
| 219 | guint ltt_trace_get_num_cpu(LttTrace *t) |
| 220 | { |
| 221 | return t->num_cpu; |
| 222 | } |
| 223 | |
| 224 | |
| 225 | /* trace can be NULL |
| 226 | * |
| 227 | * Return value : 0 success, 1 bad tracefile |
| 228 | */ |
| 229 | int parse_trace_header(void *header, LttTracefile *tf, LttTrace *t) |
| 230 | { |
| 231 | guint32 *magic_number = (guint32*)header; |
| 232 | struct ltt_trace_header_any *any = (struct ltt_trace_header_any *)header; |
| 233 | |
| 234 | if(*magic_number == LTT_MAGIC_NUMBER) |
| 235 | tf->reverse_bo = 0; |
| 236 | else if(*magic_number == LTT_REV_MAGIC_NUMBER) |
| 237 | tf->reverse_bo = 1; |
| 238 | else /* invalid magic number, bad tracefile ! */ |
| 239 | return 1; |
| 240 | |
| 241 | /* Get float byte order : might be different from int byte order |
| 242 | * (or is set to 0 if the trace has no float (kernel trace)) */ |
| 243 | tf->float_word_order = any->float_word_order; |
| 244 | tf->alignment = any->alignment; |
| 245 | tf->has_heartbeat = any->has_heartbeat; |
| 246 | |
| 247 | if(t) { |
| 248 | t->arch_type = ltt_get_uint32(LTT_GET_BO(tf), |
| 249 | &any->arch_type); |
| 250 | t->arch_variant = ltt_get_uint32(LTT_GET_BO(tf), |
| 251 | &any->arch_variant); |
| 252 | t->arch_size = any->arch_size; |
| 253 | t->ltt_major_version = any->major_version; |
| 254 | t->ltt_minor_version = any->minor_version; |
| 255 | t->flight_recorder = any->flight_recorder; |
| 256 | // t->compact_facilities = NULL; |
| 257 | } |
| 258 | |
| 259 | switch(any->major_version) { |
| 260 | |
| 261 | case 0: |
| 262 | g_warning("Unsupported trace version : %hhu.%hhu", |
| 263 | any->major_version, any->minor_version); |
| 264 | return 1; |
| 265 | break; |
| 266 | case 1: |
| 267 | switch(any->minor_version) { |
| 268 | case 0: |
| 269 | { |
| 270 | struct ltt_trace_header_1_0 *vheader = |
| 271 | (struct ltt_trace_header_1_0 *)header; |
| 272 | tf->buffer_header_size = |
| 273 | sizeof(struct ltt_block_start_header) |
| 274 | + sizeof(struct ltt_trace_header_1_0); |
| 275 | tf->tsc_lsb_truncate = vheader->tsc_lsb_truncate; |
| 276 | tf->tscbits = vheader->tscbits; |
| 277 | tf->tsc_msb_cutoff = 32 - tf->tsc_lsb_truncate - tf->tscbits; |
| 278 | tf->compact_event_bits = 32 - vheader->compact_data_shift; |
| 279 | tf->tsc_mask = ((1ULL << (tf->tscbits))-1); |
| 280 | tf->tsc_mask = tf->tsc_mask << tf->tsc_lsb_truncate; |
| 281 | tf->tsc_mask_next_bit = (1ULL<<(tf->tscbits)); |
| 282 | tf->tsc_mask_next_bit = tf->tsc_mask_next_bit << tf->tsc_lsb_truncate; |
| 283 | if(t) { |
| 284 | t->start_freq = ltt_get_uint64(LTT_GET_BO(tf), |
| 285 | &vheader->start_freq); |
| 286 | t->freq_scale = ltt_get_uint32(LTT_GET_BO(tf), |
| 287 | &vheader->freq_scale); |
| 288 | if(father_trace) { |
| 289 | t->start_freq = father_trace->start_freq; |
| 290 | t->freq_scale = father_trace->freq_scale; |
| 291 | } |
| 292 | else { |
| 293 | father_trace = t; |
| 294 | } |
| 295 | t->start_tsc = ltt_get_uint64(LTT_GET_BO(tf), |
| 296 | &vheader->start_tsc); |
| 297 | t->start_monotonic = ltt_get_uint64(LTT_GET_BO(tf), |
| 298 | &vheader->start_monotonic); |
| 299 | t->start_time.tv_sec = ltt_get_uint64(LTT_GET_BO(tf), |
| 300 | &vheader->start_time_sec); |
| 301 | t->start_time.tv_nsec = ltt_get_uint64(LTT_GET_BO(tf), |
| 302 | &vheader->start_time_usec); |
| 303 | t->start_time.tv_nsec *= 1000; /* microsec to nanosec */ |
| 304 | |
| 305 | t->start_time_from_tsc = ltt_time_from_uint64( |
| 306 | (double)t->start_tsc |
| 307 | * (1000000000.0 / tf->trace->freq_scale) |
| 308 | / (double)t->start_freq); |
| 309 | } |
| 310 | } |
| 311 | break; |
| 312 | default: |
| 313 | g_warning("Unsupported trace version : %hhu.%hhu", |
| 314 | any->major_version, any->minor_version); |
| 315 | return 1; |
| 316 | } |
| 317 | break; |
| 318 | default: |
| 319 | g_warning("Unsupported trace version : %hhu.%hhu", |
| 320 | any->major_version, any->minor_version); |
| 321 | return 1; |
| 322 | } |
| 323 | |
| 324 | |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | |
| 329 | |
| 330 | /***************************************************************************** |
| 331 | *Function name |
| 332 | * ltt_tracefile_open : open a trace file, construct a LttTracefile |
| 333 | *Input params |
| 334 | * t : the trace containing the tracefile |
| 335 | * fileName : path name of the trace file |
| 336 | * tf : the tracefile structure |
| 337 | *Return value |
| 338 | * : 0 for success, -1 otherwise. |
| 339 | ****************************************************************************/ |
| 340 | |
| 341 | gint ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf) |
| 342 | { |
| 343 | struct stat lTDFStat; /* Trace data file status */ |
| 344 | struct ltt_block_start_header *header; |
| 345 | int page_size = getpagesize(); |
| 346 | |
| 347 | //open the file |
| 348 | tf->long_name = g_quark_from_string(fileName); |
| 349 | tf->trace = t; |
| 350 | tf->fd = open(fileName, O_RDONLY); |
| 351 | if(tf->fd < 0){ |
| 352 | g_warning("Unable to open input data file %s\n", fileName); |
| 353 | goto end; |
| 354 | } |
| 355 | |
| 356 | // Get the file's status |
| 357 | if(fstat(tf->fd, &lTDFStat) < 0){ |
| 358 | g_warning("Unable to get the status of the input data file %s\n", fileName); |
| 359 | goto close_file; |
| 360 | } |
| 361 | |
| 362 | // Is the file large enough to contain a trace |
| 363 | if(lTDFStat.st_size < |
| 364 | (off_t)(sizeof(struct ltt_block_start_header) |
| 365 | + sizeof(struct ltt_trace_header_any))){ |
| 366 | g_print("The input data file %s does not contain a trace\n", fileName); |
| 367 | goto close_file; |
| 368 | } |
| 369 | |
| 370 | /* Temporarily map the buffer start header to get trace information */ |
| 371 | /* Multiple of pages aligned head */ |
| 372 | tf->buffer.head = mmap(0, |
| 373 | PAGE_ALIGN(sizeof(struct ltt_block_start_header) |
| 374 | + sizeof(struct ltt_trace_header_any)), PROT_READ, |
| 375 | MAP_PRIVATE, tf->fd, 0); |
| 376 | if(tf->buffer.head == MAP_FAILED) { |
| 377 | perror("Error in allocating memory for buffer of tracefile"); |
| 378 | goto close_file; |
| 379 | } |
| 380 | g_assert( ( (gulong)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
| 381 | |
| 382 | header = (struct ltt_block_start_header*)tf->buffer.head; |
| 383 | |
| 384 | if(parse_trace_header(header->trace, tf, NULL)) { |
| 385 | g_warning("parse_trace_header error"); |
| 386 | goto unmap_file; |
| 387 | } |
| 388 | |
| 389 | //store the size of the file |
| 390 | tf->file_size = lTDFStat.st_size; |
| 391 | tf->buf_size = ltt_get_uint32(LTT_GET_BO(tf), &header->buf_size); |
| 392 | tf->num_blocks = tf->file_size / tf->buf_size; |
| 393 | |
| 394 | if(munmap(tf->buffer.head, |
| 395 | PAGE_ALIGN(sizeof(struct ltt_block_start_header) |
| 396 | + sizeof(struct ltt_trace_header_any)))) { |
| 397 | g_warning("unmap size : %u\n", |
| 398 | PAGE_ALIGN(sizeof(struct ltt_block_start_header) |
| 399 | + sizeof(struct ltt_trace_header_any))); |
| 400 | perror("munmap error"); |
| 401 | g_assert(0); |
| 402 | } |
| 403 | tf->buffer.head = NULL; |
| 404 | |
| 405 | //read the first block |
| 406 | if(map_block(tf,0)) { |
| 407 | perror("Cannot map block for tracefile"); |
| 408 | goto close_file; |
| 409 | } |
| 410 | |
| 411 | return 0; |
| 412 | |
| 413 | /* Error */ |
| 414 | unmap_file: |
| 415 | if(munmap(tf->buffer.head, |
| 416 | PAGE_ALIGN(sizeof(struct ltt_block_start_header) |
| 417 | + sizeof(struct ltt_trace_header_any)))) { |
| 418 | g_warning("unmap size : %u\n", |
| 419 | PAGE_ALIGN(sizeof(struct ltt_block_start_header) |
| 420 | + sizeof(struct ltt_trace_header_any))); |
| 421 | perror("munmap error"); |
| 422 | g_assert(0); |
| 423 | } |
| 424 | close_file: |
| 425 | close(tf->fd); |
| 426 | end: |
| 427 | return -1; |
| 428 | } |
| 429 | |
| 430 | LttTrace *ltt_tracefile_get_trace(LttTracefile *tf) |
| 431 | { |
| 432 | return tf->trace; |
| 433 | } |
| 434 | |
| 435 | #if 0 |
| 436 | /***************************************************************************** |
| 437 | *Open control and per cpu tracefiles |
| 438 | ****************************************************************************/ |
| 439 | |
| 440 | void ltt_tracefile_open_cpu(LttTrace *t, gchar * tracefile_name) |
| 441 | { |
| 442 | LttTracefile * tf; |
| 443 | tf = ltt_tracefile_open(t,tracefile_name); |
| 444 | if(!tf) return; |
| 445 | t->per_cpu_tracefile_number++; |
| 446 | g_ptr_array_add(t->per_cpu_tracefiles, tf); |
| 447 | } |
| 448 | |
| 449 | gint ltt_tracefile_open_control(LttTrace *t, gchar * control_name) |
| 450 | { |
| 451 | LttTracefile * tf; |
| 452 | LttEvent ev; |
| 453 | LttFacility * f; |
| 454 | void * pos; |
| 455 | FacilityLoad fLoad; |
| 456 | unsigned int i; |
| 457 | |
| 458 | tf = ltt_tracefile_open(t,control_name); |
| 459 | if(!tf) { |
| 460 | g_warning("ltt_tracefile_open_control : bad file descriptor"); |
| 461 | return -1; |
| 462 | } |
| 463 | t->control_tracefile_number++; |
| 464 | g_ptr_array_add(t->control_tracefiles,tf); |
| 465 | |
| 466 | //parse facilities tracefile to get base_id |
| 467 | if(strcmp(&control_name[strlen(control_name)-10],"facilities") ==0){ |
| 468 | while(1){ |
| 469 | if(!ltt_tracefile_read(tf,&ev)) return 0; // end of file |
| 470 | |
| 471 | if(ev.event_id == TRACE_FACILITY_LOAD){ |
| 472 | pos = ev.data; |
| 473 | fLoad.name = (gchar*)pos; |
| 474 | fLoad.checksum = *(LttChecksum*)(pos + strlen(fLoad.name)); |
| 475 | fLoad.base_code = *(guint32 *)(pos + strlen(fLoad.name) + sizeof(LttChecksum)); |
| 476 | |
| 477 | for(i=0;i<t->facility_number;i++){ |
| 478 | f = (LttFacility*)g_ptr_array_index(t->facilities,i); |
| 479 | if(strcmp(f->name,fLoad.name)==0 && fLoad.checksum==f->checksum){ |
| 480 | f->base_id = fLoad.base_code; |
| 481 | break; |
| 482 | } |
| 483 | } |
| 484 | if(i==t->facility_number) { |
| 485 | g_warning("Facility: %s, checksum: %u is not found", |
| 486 | fLoad.name,(unsigned int)fLoad.checksum); |
| 487 | return -1; |
| 488 | } |
| 489 | }else if(ev.event_id == TRACE_BLOCK_START){ |
| 490 | continue; |
| 491 | }else if(ev.event_id == TRACE_BLOCK_END){ |
| 492 | break; |
| 493 | }else { |
| 494 | g_warning("Not valid facilities trace file"); |
| 495 | return -1; |
| 496 | } |
| 497 | } |
| 498 | } |
| 499 | return 0; |
| 500 | } |
| 501 | #endif //0 |
| 502 | |
| 503 | /***************************************************************************** |
| 504 | *Function name |
| 505 | * ltt_tracefile_close: close a trace file, |
| 506 | *Input params |
| 507 | * t : tracefile which will be closed |
| 508 | ****************************************************************************/ |
| 509 | |
| 510 | void ltt_tracefile_close(LttTracefile *t) |
| 511 | { |
| 512 | int page_size = getpagesize(); |
| 513 | |
| 514 | if(t->buffer.head != NULL) |
| 515 | if(munmap(t->buffer.head, PAGE_ALIGN(t->buf_size))) { |
| 516 | g_warning("unmap size : %u\n", |
| 517 | PAGE_ALIGN(t->buf_size)); |
| 518 | perror("munmap error"); |
| 519 | g_assert(0); |
| 520 | } |
| 521 | |
| 522 | close(t->fd); |
| 523 | } |
| 524 | |
| 525 | |
| 526 | /***************************************************************************** |
| 527 | *Get system information |
| 528 | ****************************************************************************/ |
| 529 | #if 0 |
| 530 | gint getSystemInfo(LttSystemDescription* des, gchar * pathname) |
| 531 | { |
| 532 | int fd; |
| 533 | GIOChannel *iochan; |
| 534 | gchar *buf = NULL; |
| 535 | gsize length; |
| 536 | |
| 537 | GMarkupParseContext * context; |
| 538 | GError * error = NULL; |
| 539 | GMarkupParser markup_parser = |
| 540 | { |
| 541 | parser_start_element, |
| 542 | NULL, |
| 543 | parser_characters, |
| 544 | NULL, /* passthrough */ |
| 545 | NULL /* error */ |
| 546 | }; |
| 547 | |
| 548 | fd = g_open(pathname, O_RDONLY, 0); |
| 549 | if(fd == -1){ |
| 550 | g_warning("Can not open file : %s\n", pathname); |
| 551 | return -1; |
| 552 | } |
| 553 | |
| 554 | iochan = g_io_channel_unix_new(fd); |
| 555 | |
| 556 | context = g_markup_parse_context_new(&markup_parser, 0, des,NULL); |
| 557 | |
| 558 | //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){ |
| 559 | while(g_io_channel_read_line(iochan, &buf, &length, NULL, &error) |
| 560 | != G_IO_STATUS_EOF) { |
| 561 | |
| 562 | if(error != NULL) { |
| 563 | g_warning("Can not read xml file: \n%s\n", error->message); |
| 564 | g_error_free(error); |
| 565 | } |
| 566 | if(!g_markup_parse_context_parse(context, buf, length, &error)){ |
| 567 | if(error != NULL) { |
| 568 | g_warning("Can not parse xml file: \n%s\n", error->message); |
| 569 | g_error_free(error); |
| 570 | } |
| 571 | g_markup_parse_context_free(context); |
| 572 | |
| 573 | g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ |
| 574 | if(error != NULL) { |
| 575 | g_warning("Can not close file: \n%s\n", error->message); |
| 576 | g_error_free(error); |
| 577 | } |
| 578 | |
| 579 | close(fd); |
| 580 | return -1; |
| 581 | } |
| 582 | } |
| 583 | g_markup_parse_context_free(context); |
| 584 | |
| 585 | g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ |
| 586 | if(error != NULL) { |
| 587 | g_warning("Can not close file: \n%s\n", error->message); |
| 588 | g_error_free(error); |
| 589 | } |
| 590 | |
| 591 | g_close(fd); |
| 592 | |
| 593 | g_free(buf); |
| 594 | return 0; |
| 595 | } |
| 596 | #endif //0 |
| 597 | |
| 598 | /***************************************************************************** |
| 599 | *The following functions get facility/tracefile information |
| 600 | ****************************************************************************/ |
| 601 | #if 0 |
| 602 | gint getFacilityInfo(LttTrace *t, gchar* eventdefs) |
| 603 | { |
| 604 | GDir * dir; |
| 605 | const gchar * name; |
| 606 | unsigned int i,j; |
| 607 | LttFacility * f; |
| 608 | LttEventType * et; |
| 609 | gchar fullname[DIR_NAME_SIZE]; |
| 610 | GError * error = NULL; |
| 611 | |
| 612 | dir = g_dir_open(eventdefs, 0, &error); |
| 613 | |
| 614 | if(error != NULL) { |
| 615 | g_warning("Can not open directory: %s, %s\n", eventdefs, error->message); |
| 616 | g_error_free(error); |
| 617 | return -1; |
| 618 | } |
| 619 | |
| 620 | while((name = g_dir_read_name(dir)) != NULL){ |
| 621 | if(!g_pattern_match_simple("*.xml", name)) continue; |
| 622 | strcpy(fullname,eventdefs); |
| 623 | strcat(fullname,name); |
| 624 | ltt_facility_open(t,fullname); |
| 625 | } |
| 626 | g_dir_close(dir); |
| 627 | |
| 628 | for(j=0;j<t->facility_number;j++){ |
| 629 | f = (LttFacility*)g_ptr_array_index(t->facilities, j); |
| 630 | for(i=0; i<f->event_number; i++){ |
| 631 | et = f->events[i]; |
| 632 | setFieldsOffset(NULL, et, NULL, t); |
| 633 | } |
| 634 | } |
| 635 | return 0; |
| 636 | } |
| 637 | #endif //0 |
| 638 | |
| 639 | /***************************************************************************** |
| 640 | *A trace is specified as a pathname to the directory containing all the |
| 641 | *associated data (control tracefiles, per cpu tracefiles, event |
| 642 | *descriptions...). |
| 643 | * |
| 644 | *When a trace is closed, all the associated facilities, types and fields |
| 645 | *are released as well. |
| 646 | */ |
| 647 | |
| 648 | |
| 649 | /**************************************************************************** |
| 650 | * get_absolute_pathname |
| 651 | * |
| 652 | * return the unique pathname in the system |
| 653 | * |
| 654 | * MD : Fixed this function so it uses realpath, dealing well with |
| 655 | * forgotten cases (.. were not used correctly before). |
| 656 | * |
| 657 | ****************************************************************************/ |
| 658 | void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname) |
| 659 | { |
| 660 | abs_pathname[0] = '\0'; |
| 661 | |
| 662 | if ( realpath (pathname, abs_pathname) != NULL) |
| 663 | return; |
| 664 | else |
| 665 | { |
| 666 | /* error, return the original path unmodified */ |
| 667 | strcpy(abs_pathname, pathname); |
| 668 | return; |
| 669 | } |
| 670 | return; |
| 671 | } |
| 672 | |
| 673 | /* Search for something like : .*_.* |
| 674 | * |
| 675 | * The left side is the name, the right side is the number. |
| 676 | */ |
| 677 | |
| 678 | int get_tracefile_name_number(gchar *raw_name, |
| 679 | GQuark *name, |
| 680 | guint *num, |
| 681 | gulong *tid, |
| 682 | gulong *pgid, |
| 683 | guint64 *creation) |
| 684 | { |
| 685 | guint raw_name_len = strlen(raw_name); |
| 686 | gchar char_name[PATH_MAX]; |
| 687 | int i; |
| 688 | int underscore_pos; |
| 689 | long int cpu_num; |
| 690 | gchar *endptr; |
| 691 | gchar *tmpptr; |
| 692 | |
| 693 | for(i=raw_name_len-1;i>=0;i--) { |
| 694 | if(raw_name[i] == '_') break; |
| 695 | } |
| 696 | if(i==-1) { /* Either not found or name length is 0 */ |
| 697 | /* This is a userspace tracefile */ |
| 698 | strncpy(char_name, raw_name, raw_name_len); |
| 699 | char_name[raw_name_len] = '\0'; |
| 700 | *name = g_quark_from_string(char_name); |
| 701 | *num = 0; /* unknown cpu */ |
| 702 | for(i=0;i<raw_name_len;i++) { |
| 703 | if(raw_name[i] == '/') { |
| 704 | break; |
| 705 | } |
| 706 | } |
| 707 | i++; |
| 708 | for(;i<raw_name_len;i++) { |
| 709 | if(raw_name[i] == '/') { |
| 710 | break; |
| 711 | } |
| 712 | } |
| 713 | i++; |
| 714 | for(;i<raw_name_len;i++) { |
| 715 | if(raw_name[i] == '-') { |
| 716 | break; |
| 717 | } |
| 718 | } |
| 719 | if(i == raw_name_len) return -1; |
| 720 | i++; |
| 721 | tmpptr = &raw_name[i]; |
| 722 | for(;i<raw_name_len;i++) { |
| 723 | if(raw_name[i] == '.') { |
| 724 | raw_name[i] = ' '; |
| 725 | break; |
| 726 | } |
| 727 | } |
| 728 | *tid = strtoul(tmpptr, &endptr, 10); |
| 729 | if(endptr == tmpptr) |
| 730 | return -1; /* No digit */ |
| 731 | if(*tid == ULONG_MAX) |
| 732 | return -1; /* underflow / overflow */ |
| 733 | i++; |
| 734 | tmpptr = &raw_name[i]; |
| 735 | for(;i<raw_name_len;i++) { |
| 736 | if(raw_name[i] == '.') { |
| 737 | raw_name[i] = ' '; |
| 738 | break; |
| 739 | } |
| 740 | } |
| 741 | *pgid = strtoul(tmpptr, &endptr, 10); |
| 742 | if(endptr == tmpptr) |
| 743 | return -1; /* No digit */ |
| 744 | if(*pgid == ULONG_MAX) |
| 745 | return -1; /* underflow / overflow */ |
| 746 | i++; |
| 747 | tmpptr = &raw_name[i]; |
| 748 | *creation = strtoull(tmpptr, &endptr, 10); |
| 749 | if(endptr == tmpptr) |
| 750 | return -1; /* No digit */ |
| 751 | if(*creation == G_MAXUINT64) |
| 752 | return -1; /* underflow / overflow */ |
| 753 | } else { |
| 754 | underscore_pos = i; |
| 755 | |
| 756 | cpu_num = strtol(raw_name+underscore_pos+1, &endptr, 10); |
| 757 | |
| 758 | if(endptr == raw_name+underscore_pos+1) |
| 759 | return -1; /* No digit */ |
| 760 | if(cpu_num == LONG_MIN || cpu_num == LONG_MAX) |
| 761 | return -1; /* underflow / overflow */ |
| 762 | |
| 763 | strncpy(char_name, raw_name, underscore_pos); |
| 764 | char_name[underscore_pos] = '\0'; |
| 765 | |
| 766 | *name = g_quark_from_string(char_name); |
| 767 | *num = cpu_num; |
| 768 | } |
| 769 | |
| 770 | |
| 771 | return 0; |
| 772 | } |
| 773 | |
| 774 | |
| 775 | GData **ltt_trace_get_tracefiles_groups(LttTrace *trace) |
| 776 | { |
| 777 | return &trace->tracefiles; |
| 778 | } |
| 779 | |
| 780 | |
| 781 | void compute_tracefile_group(GQuark key_id, |
| 782 | GArray *group, |
| 783 | struct compute_tracefile_group_args *args) |
| 784 | { |
| 785 | int i; |
| 786 | LttTracefile *tf; |
| 787 | |
| 788 | for(i=0; i<group->len; i++) { |
| 789 | tf = &g_array_index (group, LttTracefile, i); |
| 790 | if(tf->cpu_online) |
| 791 | args->func(tf, args->func_args); |
| 792 | } |
| 793 | } |
| 794 | |
| 795 | |
| 796 | void ltt_tracefile_group_destroy(gpointer data) |
| 797 | { |
| 798 | GArray *group = (GArray *)data; |
| 799 | int i; |
| 800 | LttTracefile *tf; |
| 801 | |
| 802 | for(i=0; i<group->len; i++) { |
| 803 | tf = &g_array_index (group, LttTracefile, i); |
| 804 | if(tf->cpu_online) |
| 805 | ltt_tracefile_close(tf); |
| 806 | } |
| 807 | g_array_free(group, TRUE); |
| 808 | } |
| 809 | |
| 810 | gboolean ltt_tracefile_group_has_cpu_online(gpointer data) |
| 811 | { |
| 812 | GArray *group = (GArray *)data; |
| 813 | int i; |
| 814 | LttTracefile *tf; |
| 815 | |
| 816 | for(i=0; i<group->len; i++) { |
| 817 | tf = &g_array_index (group, LttTracefile, i); |
| 818 | if(tf->cpu_online) |
| 819 | return 1; |
| 820 | } |
| 821 | return 0; |
| 822 | } |
| 823 | |
| 824 | |
| 825 | /* Open each tracefile under a specific directory. Put them in a |
| 826 | * GData : permits to access them using their tracefile group pathname. |
| 827 | * i.e. access control/modules tracefile group by index : |
| 828 | * "control/module". |
| 829 | * |
| 830 | * relative path is the path relative to the trace root |
| 831 | * root path is the full path |
| 832 | * |
| 833 | * A tracefile group is simply an array where all the per cpu tracefiles sit. |
| 834 | */ |
| 835 | |
| 836 | int open_tracefiles(LttTrace *trace, gchar *root_path, gchar *relative_path) |
| 837 | { |
| 838 | DIR *dir = opendir(root_path); |
| 839 | struct dirent *entry; |
| 840 | struct stat stat_buf; |
| 841 | int ret; |
| 842 | |
| 843 | gchar path[PATH_MAX]; |
| 844 | int path_len; |
| 845 | gchar *path_ptr; |
| 846 | |
| 847 | int rel_path_len; |
| 848 | gchar rel_path[PATH_MAX]; |
| 849 | gchar *rel_path_ptr; |
| 850 | LttTracefile tmp_tf; |
| 851 | |
| 852 | if(dir == NULL) { |
| 853 | perror(root_path); |
| 854 | return ENOENT; |
| 855 | } |
| 856 | |
| 857 | strncpy(path, root_path, PATH_MAX-1); |
| 858 | path_len = strlen(path); |
| 859 | path[path_len] = '/'; |
| 860 | path_len++; |
| 861 | path_ptr = path + path_len; |
| 862 | |
| 863 | strncpy(rel_path, relative_path, PATH_MAX-1); |
| 864 | rel_path_len = strlen(rel_path); |
| 865 | rel_path[rel_path_len] = '/'; |
| 866 | rel_path_len++; |
| 867 | rel_path_ptr = rel_path + rel_path_len; |
| 868 | |
| 869 | while((entry = readdir(dir)) != NULL) { |
| 870 | |
| 871 | if(entry->d_name[0] == '.') continue; |
| 872 | |
| 873 | strncpy(path_ptr, entry->d_name, PATH_MAX - path_len); |
| 874 | strncpy(rel_path_ptr, entry->d_name, PATH_MAX - rel_path_len); |
| 875 | |
| 876 | ret = stat(path, &stat_buf); |
| 877 | if(ret == -1) { |
| 878 | perror(path); |
| 879 | continue; |
| 880 | } |
| 881 | |
| 882 | g_debug("Tracefile file or directory : %s\n", path); |
| 883 | |
| 884 | // if(strcmp(rel_path, "/eventdefs") == 0) continue; |
| 885 | |
| 886 | if(S_ISDIR(stat_buf.st_mode)) { |
| 887 | |
| 888 | g_debug("Entering subdirectory...\n"); |
| 889 | ret = open_tracefiles(trace, path, rel_path); |
| 890 | if(ret < 0) continue; |
| 891 | } else if(S_ISREG(stat_buf.st_mode)) { |
| 892 | GQuark name; |
| 893 | guint num; |
| 894 | gulong tid, pgid; |
| 895 | guint64 creation; |
| 896 | GArray *group; |
| 897 | num = 0; |
| 898 | tid = pgid = 0; |
| 899 | creation = 0; |
| 900 | if(get_tracefile_name_number(rel_path, &name, &num, &tid, &pgid, &creation)) |
| 901 | continue; /* invalid name */ |
| 902 | |
| 903 | g_debug("Opening file.\n"); |
| 904 | if(ltt_tracefile_open(trace, path, &tmp_tf)) { |
| 905 | g_info("Error opening tracefile %s", path); |
| 906 | |
| 907 | continue; /* error opening the tracefile : bad magic number ? */ |
| 908 | } |
| 909 | |
| 910 | g_debug("Tracefile name is %s and number is %u", |
| 911 | g_quark_to_string(name), num); |
| 912 | |
| 913 | tmp_tf.cpu_online = 1; |
| 914 | tmp_tf.cpu_num = num; |
| 915 | tmp_tf.name = name; |
| 916 | tmp_tf.tid = tid; |
| 917 | tmp_tf.pgid = pgid; |
| 918 | tmp_tf.creation = creation; |
| 919 | if(tmp_tf.name == g_quark_from_string("/compact") |
| 920 | || tmp_tf.name == g_quark_from_string("/flight-compact")) |
| 921 | tmp_tf.compact = 1; |
| 922 | else |
| 923 | tmp_tf.compact = 0; |
| 924 | group = g_datalist_id_get_data(&trace->tracefiles, name); |
| 925 | if(group == NULL) { |
| 926 | /* Elements are automatically cleared when the array is allocated. |
| 927 | * It makes the cpu_online variable set to 0 : cpu offline, by default. |
| 928 | */ |
| 929 | group = g_array_sized_new (FALSE, TRUE, sizeof(LttTracefile), 10); |
| 930 | g_datalist_id_set_data_full(&trace->tracefiles, name, |
| 931 | group, ltt_tracefile_group_destroy); |
| 932 | } |
| 933 | |
| 934 | /* Add the per cpu tracefile to the named group */ |
| 935 | unsigned int old_len = group->len; |
| 936 | if(num+1 > old_len) |
| 937 | group = g_array_set_size(group, num+1); |
| 938 | g_array_index (group, LttTracefile, num) = tmp_tf; |
| 939 | g_array_index (group, LttTracefile, num).event.tracefile = |
| 940 | &g_array_index (group, LttTracefile, num); |
| 941 | } |
| 942 | } |
| 943 | |
| 944 | closedir(dir); |
| 945 | |
| 946 | return 0; |
| 947 | } |
| 948 | |
| 949 | /* ltt_get_facility_description |
| 950 | * |
| 951 | * Opens the file corresponding to the requested facility (identified by fac_id |
| 952 | * and checksum). |
| 953 | * |
| 954 | * The name searched is : %trace root%/eventdefs/facname_checksum.xml |
| 955 | * |
| 956 | * Returns 0 on success, or 1 on failure. |
| 957 | */ |
| 958 | #if 0 |
| 959 | static int ltt_get_facility_description(LttFacility *f, |
| 960 | LttTrace *t, |
| 961 | LttTracefile *fac_tf) |
| 962 | { |
| 963 | char desc_file_name[PATH_MAX]; |
| 964 | const gchar *text; |
| 965 | guint textlen; |
| 966 | gint err; |
| 967 | gint arch_spec; |
| 968 | gint fac_name_len; |
| 969 | |
| 970 | text = g_quark_to_string(t->pathname); |
| 971 | textlen = strlen(text); |
| 972 | |
| 973 | if(textlen >= PATH_MAX) goto name_error; |
| 974 | strcpy(desc_file_name, text); |
| 975 | |
| 976 | text = "/eventdefs/"; |
| 977 | textlen+=strlen(text); |
| 978 | if(textlen >= PATH_MAX) goto name_error; |
| 979 | strcat(desc_file_name, text); |
| 980 | |
| 981 | text = g_quark_to_string(f->name); |
| 982 | fac_name_len = strlen(text); |
| 983 | textlen+=fac_name_len; |
| 984 | if(textlen >= PATH_MAX) goto name_error; |
| 985 | strcat(desc_file_name, text); |
| 986 | |
| 987 | /* arch specific facilities are named like this : name_arch */ |
| 988 | if(fac_name_len+1 < sizeof("_arch")) |
| 989 | arch_spec = 0; |
| 990 | else { |
| 991 | if(!strcmp(&text[fac_name_len+1-sizeof("_arch")], "_arch")) |
| 992 | arch_spec = 1; |
| 993 | else |
| 994 | arch_spec = 0; |
| 995 | } |
| 996 | |
| 997 | #if 0 |
| 998 | text = "_"; |
| 999 | textlen+=strlen(text); |
| 1000 | if(textlen >= PATH_MAX) goto name_error; |
| 1001 | strcat(desc_file_name, text); |
| 1002 | |
| 1003 | err = snprintf(desc_file_name+textlen, PATH_MAX-textlen-1, |
| 1004 | "%u", f->checksum); |
| 1005 | if(err < 0) goto name_error; |
| 1006 | |
| 1007 | textlen=strlen(desc_file_name); |
| 1008 | |
| 1009 | #endif //0 |
| 1010 | |
| 1011 | if(arch_spec) { |
| 1012 | switch(t->arch_type) { |
| 1013 | case LTT_ARCH_TYPE_I386: |
| 1014 | text = "_i386"; |
| 1015 | break; |
| 1016 | case LTT_ARCH_TYPE_PPC: |
| 1017 | text = "_ppc"; |
| 1018 | break; |
| 1019 | case LTT_ARCH_TYPE_SH: |
| 1020 | text = "_sh"; |
| 1021 | break; |
| 1022 | case LTT_ARCH_TYPE_S390: |
| 1023 | text = "_s390"; |
| 1024 | break; |
| 1025 | case LTT_ARCH_TYPE_MIPS: |
| 1026 | text = "_mips"; |
| 1027 | break; |
| 1028 | case LTT_ARCH_TYPE_ARM: |
| 1029 | text = "_arm"; |
| 1030 | break; |
| 1031 | case LTT_ARCH_TYPE_PPC64: |
| 1032 | text = "_ppc64"; |
| 1033 | break; |
| 1034 | case LTT_ARCH_TYPE_X86_64: |
| 1035 | text = "_x86_64"; |
| 1036 | break; |
| 1037 | case LTT_ARCH_TYPE_C2: |
| 1038 | text = "_c2"; |
| 1039 | break; |
| 1040 | case LTT_ARCH_TYPE_POWERPC: |
| 1041 | text = "_powerpc"; |
| 1042 | break; |
| 1043 | default: |
| 1044 | g_error("Trace from unsupported architecture."); |
| 1045 | } |
| 1046 | textlen+=strlen(text); |
| 1047 | if(textlen >= PATH_MAX) goto name_error; |
| 1048 | strcat(desc_file_name, text); |
| 1049 | } |
| 1050 | |
| 1051 | text = ".xml"; |
| 1052 | textlen+=strlen(text); |
| 1053 | if(textlen >= PATH_MAX) goto name_error; |
| 1054 | strcat(desc_file_name, text); |
| 1055 | |
| 1056 | err = ltt_facility_open(f, t, desc_file_name); |
| 1057 | if(err) goto facility_error; |
| 1058 | |
| 1059 | return 0; |
| 1060 | |
| 1061 | facility_error: |
| 1062 | name_error: |
| 1063 | return 1; |
| 1064 | } |
| 1065 | |
| 1066 | static void ltt_fac_ids_destroy(gpointer data) |
| 1067 | { |
| 1068 | GArray *fac_ids = (GArray *)data; |
| 1069 | |
| 1070 | g_array_free(fac_ids, TRUE); |
| 1071 | } |
| 1072 | #endif //0 |
| 1073 | |
| 1074 | /* Presumes the tracefile is already seeked at the beginning. It makes sense, |
| 1075 | * because it must be done just after the opening */ |
| 1076 | int ltt_process_facility_tracefile(LttTracefile *tf) |
| 1077 | { |
| 1078 | int err; |
| 1079 | //LttFacility *fac; |
| 1080 | //GArray *fac_ids; |
| 1081 | guint i; |
| 1082 | //LttEventType *et; |
| 1083 | |
| 1084 | while(1) { |
| 1085 | err = ltt_tracefile_read_seek(tf); |
| 1086 | if(err == EPERM) goto seek_error; |
| 1087 | else if(err == ERANGE) break; /* End of tracefile */ |
| 1088 | |
| 1089 | err = ltt_tracefile_read_update_event(tf); |
| 1090 | if(err) goto update_error; |
| 1091 | |
| 1092 | /* We are on a facility load/or facility unload/ or heartbeat event */ |
| 1093 | /* The rules are : |
| 1094 | * * facility 0 is hardcoded : this is the core facility. It will be shown |
| 1095 | * in the facility array though, and is shown as "loaded builtin" in the |
| 1096 | * trace. |
| 1097 | * It contains event : |
| 1098 | * 0 : facility load |
| 1099 | * 1 : facility unload |
| 1100 | * 2 : state dump facility load |
| 1101 | * 3 : heartbeat |
| 1102 | */ |
| 1103 | if(tf->event.event_id >= MARKER_CORE_IDS) { |
| 1104 | /* Should only contain core facility */ |
| 1105 | g_warning("Error in processing facility file %s, " |
| 1106 | "should not contain event id %u.", g_quark_to_string(tf->name), |
| 1107 | tf->event.event_id); |
| 1108 | err = EPERM; |
| 1109 | goto event_id_error; |
| 1110 | } else { |
| 1111 | |
| 1112 | char *pos; |
| 1113 | const char *marker_name, *format; |
| 1114 | uint16_t id; |
| 1115 | guint8 int_size, long_size, pointer_size, size_t_size, alignment; |
| 1116 | |
| 1117 | // FIXME align |
| 1118 | switch((enum marker_id)tf->event.event_id) { |
| 1119 | case MARKER_ID_SET_MARKER_ID: |
| 1120 | marker_name = pos = tf->event.data; |
| 1121 | g_debug("Doing MARKER_ID_SET_MARKER_ID of marker %s", marker_name); |
| 1122 | pos += strlen(marker_name) + 1; |
| 1123 | //remove genevent compatibility |
| 1124 | //pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment); |
| 1125 | pos += ltt_align((size_t)pos, sizeof(uint16_t), tf->alignment); |
| 1126 | id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
| 1127 | g_debug("In MARKER_ID_SET_MARKER_ID of marker %s id %hu", |
| 1128 | marker_name, id); |
| 1129 | pos += sizeof(guint16); |
| 1130 | int_size = *(guint8*)pos; |
| 1131 | pos += sizeof(guint8); |
| 1132 | long_size = *(guint8*)pos; |
| 1133 | pos += sizeof(guint8); |
| 1134 | pointer_size = *(guint8*)pos; |
| 1135 | pos += sizeof(guint8); |
| 1136 | size_t_size = *(guint8*)pos; |
| 1137 | pos += sizeof(guint8); |
| 1138 | alignment = *(guint8*)pos; |
| 1139 | pos += sizeof(guint8); |
| 1140 | marker_id_event(tf->trace, g_quark_from_string(marker_name), |
| 1141 | id, int_size, long_size, |
| 1142 | pointer_size, size_t_size, alignment); |
| 1143 | break; |
| 1144 | case MARKER_ID_SET_MARKER_FORMAT: |
| 1145 | marker_name = pos = tf->event.data; |
| 1146 | g_debug("Doing MARKER_ID_SET_MARKER_FORMAT of marker %s", |
| 1147 | marker_name); |
| 1148 | pos += strlen(marker_name) + 1; |
| 1149 | //break genevent. |
| 1150 | //pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment); |
| 1151 | format = pos; |
| 1152 | pos += strlen(format) + 1; |
| 1153 | //break genevent |
| 1154 | //pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment); |
| 1155 | marker_format_event(tf->trace, g_quark_from_string(marker_name), |
| 1156 | format); |
| 1157 | /* get information from dictionnary TODO */ |
| 1158 | break; |
| 1159 | case MARKER_ID_HEARTBEAT_32: |
| 1160 | case MARKER_ID_HEARTBEAT_64: |
| 1161 | break; |
| 1162 | default: |
| 1163 | g_warning("Error in processing facility file %s, " |
| 1164 | "unknown event id %hhu.", |
| 1165 | g_quark_to_string(tf->name), |
| 1166 | tf->event.event_id); |
| 1167 | err = EPERM; |
| 1168 | goto event_id_error; |
| 1169 | } |
| 1170 | } |
| 1171 | } |
| 1172 | return 0; |
| 1173 | |
| 1174 | /* Error handling */ |
| 1175 | event_id_error: |
| 1176 | update_error: |
| 1177 | seek_error: |
| 1178 | g_warning("An error occured in facility tracefile parsing"); |
| 1179 | return err; |
| 1180 | } |
| 1181 | |
| 1182 | |
| 1183 | LttTrace *ltt_trace_open(const gchar *pathname) |
| 1184 | { |
| 1185 | gchar abs_path[PATH_MAX]; |
| 1186 | LttTrace * t; |
| 1187 | LttTracefile *tf; |
| 1188 | GArray *group; |
| 1189 | int i, ret; |
| 1190 | struct ltt_block_start_header *header; |
| 1191 | DIR *dir; |
| 1192 | struct dirent *entry; |
| 1193 | guint control_found = 0; |
| 1194 | struct stat stat_buf; |
| 1195 | gchar path[PATH_MAX]; |
| 1196 | |
| 1197 | t = g_new(LttTrace, 1); |
| 1198 | if(!t) goto alloc_error; |
| 1199 | |
| 1200 | get_absolute_pathname(pathname, abs_path); |
| 1201 | t->pathname = g_quark_from_string(abs_path); |
| 1202 | |
| 1203 | g_datalist_init(&t->tracefiles); |
| 1204 | |
| 1205 | /* Test to see if it looks like a trace */ |
| 1206 | dir = opendir(abs_path); |
| 1207 | if(dir == NULL) { |
| 1208 | perror(abs_path); |
| 1209 | goto open_error; |
| 1210 | } |
| 1211 | while((entry = readdir(dir)) != NULL) { |
| 1212 | strcpy(path, abs_path); |
| 1213 | strcat(path, "/"); |
| 1214 | strcat(path, entry->d_name); |
| 1215 | ret = stat(path, &stat_buf); |
| 1216 | if(ret == -1) { |
| 1217 | perror(path); |
| 1218 | continue; |
| 1219 | } |
| 1220 | if(S_ISDIR(stat_buf.st_mode)) { |
| 1221 | if(strcmp(entry->d_name, "control") == 0) { |
| 1222 | control_found = 1; |
| 1223 | } |
| 1224 | } |
| 1225 | } |
| 1226 | closedir(dir); |
| 1227 | |
| 1228 | if(!control_found) goto find_error; |
| 1229 | |
| 1230 | /* Open all the tracefiles */ |
| 1231 | if(open_tracefiles(t, abs_path, "")) { |
| 1232 | g_warning("Error opening tracefile %s", abs_path); |
| 1233 | goto find_error; |
| 1234 | } |
| 1235 | |
| 1236 | /* Parse each trace control/facilitiesN files : get runtime fac. info */ |
| 1237 | group = g_datalist_id_get_data(&t->tracefiles, LTT_TRACEFILE_NAME_FACILITIES); |
| 1238 | if(group == NULL) { |
| 1239 | g_error("Trace %s has no facility tracefile", abs_path); |
| 1240 | g_assert(0); |
| 1241 | goto facilities_error; |
| 1242 | } |
| 1243 | |
| 1244 | /* Get the trace information for the control/facility 0 tracefile */ |
| 1245 | g_assert(group->len > 0); |
| 1246 | tf = &g_array_index (group, LttTracefile, 0); |
| 1247 | header = (struct ltt_block_start_header*)tf->buffer.head; |
| 1248 | g_assert(parse_trace_header(header->trace, |
| 1249 | tf, t) == 0); |
| 1250 | |
| 1251 | t->num_cpu = group->len; |
| 1252 | |
| 1253 | ret = allocate_marker_data(t); |
| 1254 | if (ret) |
| 1255 | g_error("Error in allocating marker data"); |
| 1256 | |
| 1257 | for(i=0; i<group->len; i++) { |
| 1258 | tf = &g_array_index (group, LttTracefile, i); |
| 1259 | if(ltt_process_facility_tracefile(tf)) |
| 1260 | goto facilities_error; |
| 1261 | } |
| 1262 | |
| 1263 | return t; |
| 1264 | |
| 1265 | /* Error handling */ |
| 1266 | facilities_error: |
| 1267 | destroy_marker_data(t); |
| 1268 | find_error: |
| 1269 | g_datalist_clear(&t->tracefiles); |
| 1270 | open_error: |
| 1271 | g_free(t); |
| 1272 | alloc_error: |
| 1273 | return NULL; |
| 1274 | |
| 1275 | } |
| 1276 | |
| 1277 | GQuark ltt_trace_name(const LttTrace *t) |
| 1278 | { |
| 1279 | return t->pathname; |
| 1280 | } |
| 1281 | |
| 1282 | |
| 1283 | /****************************************************************************** |
| 1284 | * When we copy a trace, we want all the opening actions to happen again : |
| 1285 | * the trace will be reopened and totally independant from the original. |
| 1286 | * That's why we call ltt_trace_open. |
| 1287 | *****************************************************************************/ |
| 1288 | LttTrace *ltt_trace_copy(LttTrace *self) |
| 1289 | { |
| 1290 | return ltt_trace_open(g_quark_to_string(self->pathname)); |
| 1291 | } |
| 1292 | |
| 1293 | void ltt_trace_close(LttTrace *t) |
| 1294 | { |
| 1295 | g_datalist_clear(&t->tracefiles); |
| 1296 | g_free(t); |
| 1297 | } |
| 1298 | |
| 1299 | |
| 1300 | /***************************************************************************** |
| 1301 | *Get the system description of the trace |
| 1302 | ****************************************************************************/ |
| 1303 | #if 0 |
| 1304 | LttFacility *ltt_trace_facility_by_id(LttTrace *t, guint8 id) |
| 1305 | { |
| 1306 | g_assert(id < t->facilities_by_num->len); |
| 1307 | return &g_array_index(t->facilities_by_num, LttFacility, id); |
| 1308 | } |
| 1309 | |
| 1310 | /* ltt_trace_facility_get_by_name |
| 1311 | * |
| 1312 | * Returns the GArray of facility indexes. All the fac_ids that matches the |
| 1313 | * requested facility name. |
| 1314 | * |
| 1315 | * If name is not found, returns NULL. |
| 1316 | */ |
| 1317 | GArray *ltt_trace_facility_get_by_name(LttTrace *t, GQuark name) |
| 1318 | { |
| 1319 | return g_datalist_id_get_data(&t->facilities_by_name, name); |
| 1320 | } |
| 1321 | #endif //0 |
| 1322 | |
| 1323 | /***************************************************************************** |
| 1324 | * Functions to discover all the event types in the trace |
| 1325 | ****************************************************************************/ |
| 1326 | |
| 1327 | #if 0 |
| 1328 | unsigned ltt_trace_eventtype_number(LttTrace *t) |
| 1329 | { |
| 1330 | unsigned int i; |
| 1331 | unsigned count = 0; |
| 1332 | unsigned int num = t->facility_number; |
| 1333 | LttFacility * f; |
| 1334 | |
| 1335 | for(i=0;i<num;i++){ |
| 1336 | f = (LttFacility*)g_ptr_array_index(t->facilities, i); |
| 1337 | count += f->event_number; |
| 1338 | } |
| 1339 | return count; |
| 1340 | } |
| 1341 | #endif //0 |
| 1342 | |
| 1343 | #if 0 |
| 1344 | //use an iteration on all the trace facilities, and inside iteration on all the |
| 1345 | //event types in each facilities instead. |
| 1346 | LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned evId) |
| 1347 | { |
| 1348 | LttEventType *event_type; |
| 1349 | |
| 1350 | LttFacility * f; |
| 1351 | f = ltt_trace_facility_by_id(t,evId); |
| 1352 | |
| 1353 | if(unlikely(!f)) event_type = NULL; |
| 1354 | else event_type = f->events[evId - f->base_id]; |
| 1355 | |
| 1356 | return event_type; |
| 1357 | } |
| 1358 | #endif //0 |
| 1359 | |
| 1360 | #if 0 |
| 1361 | /***************************************************************************** |
| 1362 | * ltt_trace_find_tracefile |
| 1363 | * |
| 1364 | * Find a tracefile by name and index in the group. |
| 1365 | * |
| 1366 | * Returns a pointer to the tracefiles, else NULL. |
| 1367 | ****************************************************************************/ |
| 1368 | |
| 1369 | LttTracefile *ltt_trace_find_tracefile(LttTrace *t, const gchar *name) |
| 1370 | { |
| 1371 | } |
| 1372 | #endif //0 |
| 1373 | |
| 1374 | /***************************************************************************** |
| 1375 | * Get the start time and end time of the trace |
| 1376 | ****************************************************************************/ |
| 1377 | |
| 1378 | void ltt_tracefile_time_span_get(LttTracefile *tf, |
| 1379 | LttTime *start, LttTime *end) |
| 1380 | { |
| 1381 | int err; |
| 1382 | |
| 1383 | err = map_block(tf, 0); |
| 1384 | if(unlikely(err)) { |
| 1385 | g_error("Can not map block"); |
| 1386 | *start = ltt_time_infinite; |
| 1387 | } else |
| 1388 | *start = tf->buffer.begin.timestamp; |
| 1389 | |
| 1390 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
| 1391 | if(unlikely(err)) { |
| 1392 | g_error("Can not map block"); |
| 1393 | *end = ltt_time_zero; |
| 1394 | } else |
| 1395 | *end = tf->buffer.end.timestamp; |
| 1396 | } |
| 1397 | |
| 1398 | struct tracefile_time_span_get_args { |
| 1399 | LttTrace *t; |
| 1400 | LttTime *start; |
| 1401 | LttTime *end; |
| 1402 | }; |
| 1403 | |
| 1404 | void group_time_span_get(GQuark name, gpointer data, gpointer user_data) |
| 1405 | { |
| 1406 | struct tracefile_time_span_get_args *args = |
| 1407 | (struct tracefile_time_span_get_args*)user_data; |
| 1408 | |
| 1409 | GArray *group = (GArray *)data; |
| 1410 | int i; |
| 1411 | LttTracefile *tf; |
| 1412 | LttTime tmp_start; |
| 1413 | LttTime tmp_end; |
| 1414 | |
| 1415 | for(i=0; i<group->len; i++) { |
| 1416 | tf = &g_array_index (group, LttTracefile, i); |
| 1417 | if(tf->cpu_online) { |
| 1418 | ltt_tracefile_time_span_get(tf, &tmp_start, &tmp_end); |
| 1419 | if(ltt_time_compare(*args->start, tmp_start)>0) *args->start = tmp_start; |
| 1420 | if(ltt_time_compare(*args->end, tmp_end)<0) *args->end = tmp_end; |
| 1421 | } |
| 1422 | } |
| 1423 | } |
| 1424 | |
| 1425 | void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end) |
| 1426 | { |
| 1427 | LttTime min_start = ltt_time_infinite; |
| 1428 | LttTime max_end = ltt_time_zero; |
| 1429 | struct tracefile_time_span_get_args args = { t, &min_start, &max_end }; |
| 1430 | |
| 1431 | g_datalist_foreach(&t->tracefiles, &group_time_span_get, &args); |
| 1432 | |
| 1433 | if(start != NULL) *start = min_start; |
| 1434 | if(end != NULL) *end = max_end; |
| 1435 | |
| 1436 | } |
| 1437 | |
| 1438 | |
| 1439 | /***************************************************************************** |
| 1440 | *Get the name of a tracefile |
| 1441 | ****************************************************************************/ |
| 1442 | |
| 1443 | GQuark ltt_tracefile_name(const LttTracefile *tf) |
| 1444 | { |
| 1445 | return tf->name; |
| 1446 | } |
| 1447 | |
| 1448 | GQuark ltt_tracefile_long_name(const LttTracefile *tf) |
| 1449 | { |
| 1450 | return tf->long_name; |
| 1451 | } |
| 1452 | |
| 1453 | |
| 1454 | |
| 1455 | guint ltt_tracefile_cpu(LttTracefile *tf) |
| 1456 | { |
| 1457 | return tf->cpu_num; |
| 1458 | } |
| 1459 | |
| 1460 | guint ltt_tracefile_tid(LttTracefile *tf) |
| 1461 | { |
| 1462 | return tf->tid; |
| 1463 | } |
| 1464 | |
| 1465 | guint ltt_tracefile_pgid(LttTracefile *tf) |
| 1466 | { |
| 1467 | return tf->pgid; |
| 1468 | } |
| 1469 | |
| 1470 | guint64 ltt_tracefile_creation(LttTracefile *tf) |
| 1471 | { |
| 1472 | return tf->creation; |
| 1473 | } |
| 1474 | /***************************************************************************** |
| 1475 | * Get the number of blocks in the tracefile |
| 1476 | ****************************************************************************/ |
| 1477 | |
| 1478 | guint ltt_tracefile_block_number(LttTracefile *tf) |
| 1479 | { |
| 1480 | return tf->num_blocks; |
| 1481 | } |
| 1482 | |
| 1483 | |
| 1484 | /* Seek to the first event in a tracefile that has a time equal or greater than |
| 1485 | * the time passed in parameter. |
| 1486 | * |
| 1487 | * If the time parameter is outside the tracefile time span, seek to the first |
| 1488 | * event or if after, return ERANGE. |
| 1489 | * |
| 1490 | * If the time parameter is before the first event, we have to seek specially to |
| 1491 | * there. |
| 1492 | * |
| 1493 | * If the time is after the end of the trace, return ERANGE. |
| 1494 | * |
| 1495 | * Do a binary search to find the right block, then a sequential search in the |
| 1496 | * block to find the event. |
| 1497 | * |
| 1498 | * In the special case where the time requested fits inside a block that has no |
| 1499 | * event corresponding to the requested time, the first event of the next block |
| 1500 | * will be seeked. |
| 1501 | * |
| 1502 | * IMPORTANT NOTE : // FIXME everywhere... |
| 1503 | * |
| 1504 | * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time : |
| 1505 | * you will jump over an event if you do. |
| 1506 | * |
| 1507 | * Return value : 0 : no error, the tf->event can be used |
| 1508 | * ERANGE : time if after the last event of the trace |
| 1509 | * otherwise : this is an error. |
| 1510 | * |
| 1511 | * */ |
| 1512 | |
| 1513 | int ltt_tracefile_seek_time(LttTracefile *tf, LttTime time) |
| 1514 | { |
| 1515 | int ret = 0; |
| 1516 | int err; |
| 1517 | unsigned int block_num, high, low; |
| 1518 | |
| 1519 | /* seek at the beginning of trace */ |
| 1520 | err = map_block(tf, 0); /* First block */ |
| 1521 | if(unlikely(err)) { |
| 1522 | g_error("Can not map block"); |
| 1523 | goto fail; |
| 1524 | } |
| 1525 | |
| 1526 | /* If the time is lower or equal the beginning of the trace, |
| 1527 | * go to the first event. */ |
| 1528 | if(ltt_time_compare(time, tf->buffer.begin.timestamp) <= 0) { |
| 1529 | ret = ltt_tracefile_read(tf); |
| 1530 | if(ret == ERANGE) goto range; |
| 1531 | else if (ret) goto fail; |
| 1532 | goto found; /* There is either no event in the trace or the event points |
| 1533 | to the first event in the trace */ |
| 1534 | } |
| 1535 | |
| 1536 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
| 1537 | if(unlikely(err)) { |
| 1538 | g_error("Can not map block"); |
| 1539 | goto fail; |
| 1540 | } |
| 1541 | |
| 1542 | /* If the time is after the end of the trace, return ERANGE. */ |
| 1543 | if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
| 1544 | goto range; |
| 1545 | } |
| 1546 | |
| 1547 | /* Binary search the block */ |
| 1548 | high = tf->num_blocks - 1; |
| 1549 | low = 0; |
| 1550 | |
| 1551 | while(1) { |
| 1552 | block_num = ((high-low) / 2) + low; |
| 1553 | |
| 1554 | err = map_block(tf, block_num); |
| 1555 | if(unlikely(err)) { |
| 1556 | g_error("Can not map block"); |
| 1557 | goto fail; |
| 1558 | } |
| 1559 | if(high == low) { |
| 1560 | /* We cannot divide anymore : this is what would happen if the time |
| 1561 | * requested was exactly between two consecutive buffers'end and start |
| 1562 | * timestamps. This is also what would happend if we didn't deal with out |
| 1563 | * of span cases prior in this function. */ |
| 1564 | /* The event is right in the buffer! |
| 1565 | * (or in the next buffer first event) */ |
| 1566 | while(1) { |
| 1567 | ret = ltt_tracefile_read(tf); |
| 1568 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ |
| 1569 | else if(ret) goto fail; |
| 1570 | |
| 1571 | if(ltt_time_compare(time, tf->event.event_time) <= 0) |
| 1572 | goto found; |
| 1573 | } |
| 1574 | |
| 1575 | } else if(ltt_time_compare(time, tf->buffer.begin.timestamp) < 0) { |
| 1576 | /* go to lower part */ |
| 1577 | high = block_num - 1; |
| 1578 | } else if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
| 1579 | /* go to higher part */ |
| 1580 | low = block_num + 1; |
| 1581 | } else {/* The event is right in the buffer! |
| 1582 | (or in the next buffer first event) */ |
| 1583 | while(1) { |
| 1584 | ret = ltt_tracefile_read(tf); |
| 1585 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ |
| 1586 | else if(ret) goto fail; |
| 1587 | |
| 1588 | if(ltt_time_compare(time, tf->event.event_time) <= 0) |
| 1589 | break; |
| 1590 | } |
| 1591 | goto found; |
| 1592 | } |
| 1593 | } |
| 1594 | |
| 1595 | found: |
| 1596 | return 0; |
| 1597 | range: |
| 1598 | return ERANGE; |
| 1599 | |
| 1600 | /* Error handling */ |
| 1601 | fail: |
| 1602 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
| 1603 | g_quark_to_string(tf->name)); |
| 1604 | return EPERM; |
| 1605 | } |
| 1606 | |
| 1607 | |
| 1608 | int ltt_tracefile_seek_position(LttTracefile *tf, const LttEventPosition *ep) { |
| 1609 | |
| 1610 | int err; |
| 1611 | |
| 1612 | if(ep->tracefile != tf) { |
| 1613 | goto fail; |
| 1614 | } |
| 1615 | |
| 1616 | err = map_block(tf, ep->block); |
| 1617 | if(unlikely(err)) { |
| 1618 | g_error("Can not map block"); |
| 1619 | goto fail; |
| 1620 | } |
| 1621 | |
| 1622 | tf->event.offset = ep->offset; |
| 1623 | |
| 1624 | /* Put back the event real tsc */ |
| 1625 | tf->event.tsc = ep->tsc; |
| 1626 | tf->buffer.tsc = ep->tsc; |
| 1627 | |
| 1628 | err = ltt_tracefile_read_update_event(tf); |
| 1629 | if(err) goto fail; |
| 1630 | err = ltt_tracefile_read_op(tf); |
| 1631 | if(err) goto fail; |
| 1632 | |
| 1633 | return 0; |
| 1634 | |
| 1635 | fail: |
| 1636 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
| 1637 | g_quark_to_string(tf->name)); |
| 1638 | return 1; |
| 1639 | } |
| 1640 | |
| 1641 | LttTime ltt_interpolate_time_from_tsc(LttTracefile *tf, guint64 tsc) |
| 1642 | { |
| 1643 | LttTime time; |
| 1644 | |
| 1645 | if(tsc > tf->trace->start_tsc) { |
| 1646 | time = ltt_time_from_uint64( |
| 1647 | (double)(tsc - tf->trace->start_tsc) |
| 1648 | * (1000000000.0 / tf->trace->freq_scale) |
| 1649 | / (double)tf->trace->start_freq); |
| 1650 | time = ltt_time_add(tf->trace->start_time_from_tsc, time); |
| 1651 | } else { |
| 1652 | time = ltt_time_from_uint64( |
| 1653 | (double)(tf->trace->start_tsc - tsc) |
| 1654 | * (1000000000.0 / tf->trace->freq_scale) |
| 1655 | / (double)tf->trace->start_freq); |
| 1656 | time = ltt_time_sub(tf->trace->start_time_from_tsc, time); |
| 1657 | } |
| 1658 | return time; |
| 1659 | } |
| 1660 | |
| 1661 | /* Calculate the real event time based on the buffer boundaries */ |
| 1662 | LttTime ltt_interpolate_time(LttTracefile *tf, LttEvent *event) |
| 1663 | { |
| 1664 | return ltt_interpolate_time_from_tsc(tf, tf->buffer.tsc); |
| 1665 | } |
| 1666 | |
| 1667 | |
| 1668 | /* Get the current event of the tracefile : valid until the next read */ |
| 1669 | LttEvent *ltt_tracefile_get_event(LttTracefile *tf) |
| 1670 | { |
| 1671 | return &tf->event; |
| 1672 | } |
| 1673 | |
| 1674 | |
| 1675 | |
| 1676 | /***************************************************************************** |
| 1677 | *Function name |
| 1678 | * ltt_tracefile_read : Read the next event in the tracefile |
| 1679 | *Input params |
| 1680 | * t : tracefile |
| 1681 | *Return value |
| 1682 | * |
| 1683 | * Returns 0 if an event can be used in tf->event. |
| 1684 | * Returns ERANGE on end of trace. The event in tf->event still can be used |
| 1685 | * (if the last block was not empty). |
| 1686 | * Returns EPERM on error. |
| 1687 | * |
| 1688 | * This function does make the tracefile event structure point to the event |
| 1689 | * currently pointed to by the tf->event. |
| 1690 | * |
| 1691 | * Note : you must call a ltt_tracefile_seek to the beginning of the trace to |
| 1692 | * reinitialize it after an error if you want results to be coherent. |
| 1693 | * It would be the case if a end of trace last buffer has no event : the end |
| 1694 | * of trace wouldn't be returned, but an error. |
| 1695 | * We make the assumption there is at least one event per buffer. |
| 1696 | ****************************************************************************/ |
| 1697 | |
| 1698 | int ltt_tracefile_read(LttTracefile *tf) |
| 1699 | { |
| 1700 | int err; |
| 1701 | |
| 1702 | err = ltt_tracefile_read_seek(tf); |
| 1703 | if(err) return err; |
| 1704 | err = ltt_tracefile_read_update_event(tf); |
| 1705 | if(err) return err; |
| 1706 | err = ltt_tracefile_read_op(tf); |
| 1707 | if(err) return err; |
| 1708 | |
| 1709 | return 0; |
| 1710 | } |
| 1711 | |
| 1712 | int ltt_tracefile_read_seek(LttTracefile *tf) |
| 1713 | { |
| 1714 | int err; |
| 1715 | |
| 1716 | /* Get next buffer until we finally have an event, or end of trace */ |
| 1717 | while(1) { |
| 1718 | err = ltt_seek_next_event(tf); |
| 1719 | if(unlikely(err == ENOPROTOOPT)) { |
| 1720 | return EPERM; |
| 1721 | } |
| 1722 | |
| 1723 | /* Are we at the end of the buffer ? */ |
| 1724 | if(err == ERANGE) { |
| 1725 | if(unlikely(tf->buffer.index == tf->num_blocks-1)){ /* end of trace ? */ |
| 1726 | return ERANGE; |
| 1727 | } else { |
| 1728 | /* get next block */ |
| 1729 | err = map_block(tf, tf->buffer.index + 1); |
| 1730 | if(unlikely(err)) { |
| 1731 | g_error("Can not map block"); |
| 1732 | return EPERM; |
| 1733 | } |
| 1734 | } |
| 1735 | } else break; /* We found an event ! */ |
| 1736 | } |
| 1737 | |
| 1738 | return 0; |
| 1739 | } |
| 1740 | |
| 1741 | |
| 1742 | /* do specific operation on events */ |
| 1743 | int ltt_tracefile_read_op(LttTracefile *tf) |
| 1744 | { |
| 1745 | LttEvent *event; |
| 1746 | |
| 1747 | event = &tf->event; |
| 1748 | |
| 1749 | /* do event specific operation */ |
| 1750 | |
| 1751 | /* do something if its an heartbeat event : increment the heartbeat count */ |
| 1752 | //if(event->facility_id == LTT_FACILITY_CORE) |
| 1753 | // if(event->event_id == LTT_EVENT_HEARTBEAT) |
| 1754 | // tf->cur_heart_beat_number++; |
| 1755 | |
| 1756 | return 0; |
| 1757 | } |
| 1758 | |
| 1759 | static void print_debug_event_header(LttEvent *ev, void *start_pos, void *end_pos) |
| 1760 | { |
| 1761 | unsigned int offset = 0; |
| 1762 | int i, j; |
| 1763 | |
| 1764 | g_printf("Event header (tracefile %s offset %llx):\n", |
| 1765 | g_quark_to_string(ev->tracefile->long_name), |
| 1766 | ((uint64_t)ev->tracefile->buffer.index * ev->tracefile->buf_size) |
| 1767 | + (long)start_pos - (long)ev->tracefile->buffer.head); |
| 1768 | |
| 1769 | while (offset < (long)end_pos - (long)start_pos) { |
| 1770 | g_printf("%8lx", (long)start_pos - (long)ev->tracefile->buffer.head + offset); |
| 1771 | g_printf(" "); |
| 1772 | |
| 1773 | for (i = 0; i < 4 ; i++) { |
| 1774 | for (j = 0; j < 4; j++) { |
| 1775 | if (offset + ((i * 4) + j) < |
| 1776 | (long)end_pos - (long)start_pos) |
| 1777 | g_printf("%02hhX", |
| 1778 | ((char*)start_pos)[offset + ((i * 4) + j)]); |
| 1779 | else |
| 1780 | g_printf(" "); |
| 1781 | g_printf(" "); |
| 1782 | } |
| 1783 | if (i < 4) |
| 1784 | g_printf(" "); |
| 1785 | } |
| 1786 | offset+=16; |
| 1787 | g_printf("\n"); |
| 1788 | } |
| 1789 | } |
| 1790 | |
| 1791 | |
| 1792 | /* same as ltt_tracefile_read, but does not seek to the next event nor call |
| 1793 | * event specific operation. */ |
| 1794 | int ltt_tracefile_read_update_event(LttTracefile *tf) |
| 1795 | { |
| 1796 | void * pos; |
| 1797 | LttEvent *event; |
| 1798 | void *pos_aligned; |
| 1799 | |
| 1800 | event = &tf->event; |
| 1801 | pos = tf->buffer.head + event->offset; |
| 1802 | |
| 1803 | /* Read event header */ |
| 1804 | |
| 1805 | /* Align the head */ |
| 1806 | if(!tf->compact) |
| 1807 | pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment); |
| 1808 | else { |
| 1809 | g_assert(tf->has_heartbeat); |
| 1810 | pos += ltt_align((size_t)pos, sizeof(uint32_t), tf->alignment); |
| 1811 | } |
| 1812 | pos_aligned = pos; |
| 1813 | |
| 1814 | if(tf->has_heartbeat) { |
| 1815 | event->timestamp = ltt_get_uint32(LTT_GET_BO(tf), |
| 1816 | pos); |
| 1817 | if(!tf->compact) { |
| 1818 | /* 32 bits -> 64 bits tsc */ |
| 1819 | /* note : still works for seek and non seek cases. */ |
| 1820 | if(event->timestamp < (0xFFFFFFFFULL&tf->buffer.tsc)) { |
| 1821 | tf->buffer.tsc = ((tf->buffer.tsc&0xFFFFFFFF00000000ULL) |
| 1822 | + 0x100000000ULL) |
| 1823 | | (guint64)event->timestamp; |
| 1824 | event->tsc = tf->buffer.tsc; |
| 1825 | } else { |
| 1826 | /* no overflow */ |
| 1827 | tf->buffer.tsc = (tf->buffer.tsc&0xFFFFFFFF00000000ULL) |
| 1828 | | (guint64)event->timestamp; |
| 1829 | event->tsc = tf->buffer.tsc; |
| 1830 | event->compact_data = 0; |
| 1831 | } |
| 1832 | } else { |
| 1833 | /* Compact header */ |
| 1834 | /* We keep the LSB of the previous timestamp, to make sure |
| 1835 | * we never go back */ |
| 1836 | event->event_id = event->timestamp >> tf->tscbits; |
| 1837 | event->event_id = event->event_id & ((1 << tf->compact_event_bits) - 1); |
| 1838 | event->compact_data = event->timestamp >> |
| 1839 | (tf->compact_event_bits + tf->tscbits); |
| 1840 | //printf("tsc bits %u, ev bits %u init data %u\n", |
| 1841 | // tf->tscbits, tf->trace->compact_event_bits, event->compact_data); |
| 1842 | /* Put the compact data back in original endianness */ |
| 1843 | event->compact_data = ltt_get_uint32(LTT_GET_BO(tf), &event->compact_data); |
| 1844 | event->event_size = 0xFFFF; |
| 1845 | //printf("Found compact event %d\n", event->event_id); |
| 1846 | //printf("Compact data %d\n", event->compact_data); |
| 1847 | event->timestamp = event->timestamp << tf->tsc_lsb_truncate; |
| 1848 | event->timestamp = event->timestamp & tf->tsc_mask; |
| 1849 | //printf("timestamp 0x%lX\n", event->timestamp); |
| 1850 | //printf("mask 0x%llX\n", tf->tsc_mask); |
| 1851 | //printf("mask_next 0x%llX\n", tf->tsc_mask_next_bit); |
| 1852 | //printf("previous tsc 0x%llX\n", tf->buffer.tsc); |
| 1853 | //printf("previous tsc&mask 0x%llX\n", tf->tsc_mask&tf->buffer.tsc); |
| 1854 | //printf("previous tsc&(~mask) 0x%llX\n", tf->buffer.tsc&(~tf->tsc_mask)); |
| 1855 | if(event->timestamp < (tf->tsc_mask&tf->buffer.tsc)) { |
| 1856 | //printf("wrap\n"); |
| 1857 | tf->buffer.tsc = ((tf->buffer.tsc&(~tf->tsc_mask)) |
| 1858 | + tf->tsc_mask_next_bit) |
| 1859 | | (guint64)event->timestamp; |
| 1860 | event->tsc = tf->buffer.tsc; |
| 1861 | } else { |
| 1862 | //printf("no wrap\n"); |
| 1863 | /* no overflow */ |
| 1864 | tf->buffer.tsc = (tf->buffer.tsc&(~tf->tsc_mask)) |
| 1865 | | (guint64)event->timestamp; |
| 1866 | event->tsc = tf->buffer.tsc; |
| 1867 | } |
| 1868 | //printf("current tsc 0x%llX\n", tf->buffer.tsc); |
| 1869 | } |
| 1870 | pos += sizeof(guint32); |
| 1871 | } else { |
| 1872 | event->tsc = ltt_get_uint64(LTT_GET_BO(tf), pos); |
| 1873 | tf->buffer.tsc = event->tsc; |
| 1874 | event->compact_data = 0; |
| 1875 | pos += sizeof(guint64); |
| 1876 | } |
| 1877 | event->event_time = ltt_interpolate_time(tf, event); |
| 1878 | |
| 1879 | if(!tf->compact) { |
| 1880 | event->event_id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
| 1881 | pos += sizeof(guint16); |
| 1882 | |
| 1883 | event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos); |
| 1884 | pos += sizeof(guint16); |
| 1885 | } else { |
| 1886 | /* Compact event */ |
| 1887 | event->event_size = 0xFFFF; |
| 1888 | } |
| 1889 | |
| 1890 | if (a_event_debug) |
| 1891 | print_debug_event_header(event, pos_aligned, pos); |
| 1892 | |
| 1893 | /* Align the head */ |
| 1894 | if(!tf->compact) |
| 1895 | pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment); |
| 1896 | |
| 1897 | event->data = pos; |
| 1898 | |
| 1899 | /* get the data size and update the event fields with the current |
| 1900 | * information. Also update the time if a heartbeat_full event is found. */ |
| 1901 | ltt_update_event_size(tf); |
| 1902 | |
| 1903 | return 0; |
| 1904 | } |
| 1905 | |
| 1906 | |
| 1907 | /**************************************************************************** |
| 1908 | *Function name |
| 1909 | * map_block : map a block from the file |
| 1910 | *Input Params |
| 1911 | * lttdes : ltt trace file |
| 1912 | * whichBlock : the block which will be read |
| 1913 | *return value |
| 1914 | * 0 : success |
| 1915 | * EINVAL : lseek fail |
| 1916 | * EIO : can not read from the file |
| 1917 | ****************************************************************************/ |
| 1918 | |
| 1919 | gint map_block(LttTracefile * tf, guint block_num) |
| 1920 | { |
| 1921 | int page_size = getpagesize(); |
| 1922 | struct ltt_block_start_header *header; |
| 1923 | |
| 1924 | g_assert(block_num < tf->num_blocks); |
| 1925 | |
| 1926 | if(tf->buffer.head != NULL) { |
| 1927 | if(munmap(tf->buffer.head, PAGE_ALIGN(tf->buf_size))) { |
| 1928 | g_warning("unmap size : %u\n", |
| 1929 | PAGE_ALIGN(tf->buf_size)); |
| 1930 | perror("munmap error"); |
| 1931 | g_assert(0); |
| 1932 | } |
| 1933 | } |
| 1934 | |
| 1935 | |
| 1936 | /* Multiple of pages aligned head */ |
| 1937 | tf->buffer.head = mmap(0, |
| 1938 | PAGE_ALIGN(tf->buf_size), |
| 1939 | PROT_READ, MAP_PRIVATE, tf->fd, |
| 1940 | PAGE_ALIGN((off_t)tf->buf_size * (off_t)block_num)); |
| 1941 | |
| 1942 | if(tf->buffer.head == MAP_FAILED) { |
| 1943 | perror("Error in allocating memory for buffer of tracefile"); |
| 1944 | g_assert(0); |
| 1945 | goto map_error; |
| 1946 | } |
| 1947 | g_assert( ( (gulong)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
| 1948 | |
| 1949 | |
| 1950 | tf->buffer.index = block_num; |
| 1951 | |
| 1952 | header = (struct ltt_block_start_header*)tf->buffer.head; |
| 1953 | |
| 1954 | #if 0 |
| 1955 | tf->buffer.begin.timestamp = ltt_time_add( |
| 1956 | ltt_time_from_uint64( |
| 1957 | ltt_get_uint64(LTT_GET_BO(tf), |
| 1958 | &header->begin.timestamp) |
| 1959 | - tf->trace->start_monotonic), |
| 1960 | tf->trace->start_time); |
| 1961 | #endif //0 |
| 1962 | //g_debug("block %u begin : %lu.%lu", block_num, |
| 1963 | // tf->buffer.begin.timestamp.tv_sec, tf->buffer.begin.timestamp.tv_nsec); |
| 1964 | tf->buffer.begin.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
| 1965 | &header->begin.cycle_count); |
| 1966 | tf->buffer.begin.freq = ltt_get_uint64(LTT_GET_BO(tf), |
| 1967 | &header->begin.freq); |
| 1968 | if(tf->buffer.begin.freq == 0) |
| 1969 | tf->buffer.begin.freq = tf->trace->start_freq; |
| 1970 | |
| 1971 | tf->buffer.begin.timestamp = ltt_interpolate_time_from_tsc(tf, |
| 1972 | tf->buffer.begin.cycle_count); |
| 1973 | #if 0 |
| 1974 | ltt_time_add( |
| 1975 | ltt_time_from_uint64( |
| 1976 | (double)(tf->buffer.begin.cycle_count |
| 1977 | - tf->trace->start_tsc) * 1000000.0 |
| 1978 | / (double)tf->trace->start_freq), |
| 1979 | tf->trace->start_time_from_tsc); |
| 1980 | #endif //0 |
| 1981 | #if 0 |
| 1982 | |
| 1983 | tf->buffer.end.timestamp = ltt_time_add( |
| 1984 | ltt_time_from_uint64( |
| 1985 | ltt_get_uint64(LTT_GET_BO(tf), |
| 1986 | &header->end.timestamp) |
| 1987 | - tf->trace->start_monotonic), |
| 1988 | tf->trace->start_time); |
| 1989 | #endif //0 |
| 1990 | //g_debug("block %u end : %lu.%lu", block_num, |
| 1991 | // tf->buffer.end.timestamp.tv_sec, tf->buffer.end.timestamp.tv_nsec); |
| 1992 | tf->buffer.end.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
| 1993 | &header->end.cycle_count); |
| 1994 | tf->buffer.end.freq = ltt_get_uint64(LTT_GET_BO(tf), |
| 1995 | &header->end.freq); |
| 1996 | if(tf->buffer.end.freq == 0) |
| 1997 | tf->buffer.end.freq = tf->trace->start_freq; |
| 1998 | |
| 1999 | tf->buffer.lost_size = ltt_get_uint32(LTT_GET_BO(tf), |
| 2000 | &header->lost_size); |
| 2001 | tf->buffer.end.timestamp = ltt_interpolate_time_from_tsc(tf, |
| 2002 | tf->buffer.end.cycle_count); |
| 2003 | #if 0 |
| 2004 | ltt_time_add( |
| 2005 | ltt_time_from_uint64( |
| 2006 | (double)(tf->buffer.end.cycle_count |
| 2007 | - tf->trace->start_tsc) * 1000000.0 |
| 2008 | / (double)tf->trace->start_freq), |
| 2009 | tf->trace->start_time_from_tsc); |
| 2010 | #endif //0 |
| 2011 | tf->buffer.tsc = tf->buffer.begin.cycle_count; |
| 2012 | tf->event.tsc = tf->buffer.tsc; |
| 2013 | tf->buffer.freq = tf->buffer.begin.freq; |
| 2014 | |
| 2015 | /* FIXME |
| 2016 | * eventually support variable buffer size : will need a partial pre-read of |
| 2017 | * the headers to create an index when we open the trace... eventually. */ |
| 2018 | g_assert(tf->buf_size == ltt_get_uint32(LTT_GET_BO(tf), |
| 2019 | &header->buf_size)); |
| 2020 | |
| 2021 | /* Now that the buffer is mapped, calculate the time interpolation for the |
| 2022 | * block. */ |
| 2023 | |
| 2024 | // tf->buffer.nsecs_per_cycle = calc_nsecs_per_cycle(tf); |
| 2025 | //tf->buffer.cyc2ns_scale = calc_nsecs_per_cycle(tf); |
| 2026 | |
| 2027 | /* Make the current event point to the beginning of the buffer : |
| 2028 | * it means that the event read must get the first event. */ |
| 2029 | tf->event.tracefile = tf; |
| 2030 | tf->event.block = block_num; |
| 2031 | tf->event.offset = 0; |
| 2032 | |
| 2033 | return 0; |
| 2034 | |
| 2035 | map_error: |
| 2036 | return -errno; |
| 2037 | |
| 2038 | } |
| 2039 | |
| 2040 | static void print_debug_event_data(LttEvent *ev) |
| 2041 | { |
| 2042 | unsigned int offset = 0; |
| 2043 | int i, j; |
| 2044 | |
| 2045 | if (!max(ev->event_size, ev->data_size)) |
| 2046 | return; |
| 2047 | |
| 2048 | g_printf("Event data (tracefile %s offset %llx):\n", |
| 2049 | g_quark_to_string(ev->tracefile->long_name), |
| 2050 | ((uint64_t)ev->tracefile->buffer.index * ev->tracefile->buf_size) |
| 2051 | + (long)ev->data - (long)ev->tracefile->buffer.head); |
| 2052 | |
| 2053 | while (offset < max(ev->event_size, ev->data_size)) { |
| 2054 | g_printf("%8lx", (long)ev->data + offset |
| 2055 | - (long)ev->tracefile->buffer.head); |
| 2056 | g_printf(" "); |
| 2057 | |
| 2058 | for (i = 0; i < 4 ; i++) { |
| 2059 | for (j = 0; j < 4; j++) { |
| 2060 | if (offset + ((i * 4) + j) < max(ev->event_size, ev->data_size)) |
| 2061 | g_printf("%02hhX", ((char*)ev->data)[offset + ((i * 4) + j)]); |
| 2062 | else |
| 2063 | g_printf(" "); |
| 2064 | g_printf(" "); |
| 2065 | } |
| 2066 | if (i < 4) |
| 2067 | g_printf(" "); |
| 2068 | } |
| 2069 | |
| 2070 | g_printf(" "); |
| 2071 | |
| 2072 | for (i = 0; i < 4; i++) { |
| 2073 | for (j = 0; j < 4; j++) { |
| 2074 | if (offset + ((i * 4) + j) < max(ev->event_size, ev->data_size)) { |
| 2075 | if (isprint(((char*)ev->data)[offset + ((i * 4) + j)])) |
| 2076 | g_printf("%c", ((char*)ev->data)[offset + ((i * 4) + j)]); |
| 2077 | else |
| 2078 | g_printf("."); |
| 2079 | } else |
| 2080 | g_printf(" "); |
| 2081 | } |
| 2082 | } |
| 2083 | offset+=16; |
| 2084 | g_printf("\n"); |
| 2085 | } |
| 2086 | } |
| 2087 | |
| 2088 | /* It will update the fields offsets too */ |
| 2089 | void ltt_update_event_size(LttTracefile *tf) |
| 2090 | { |
| 2091 | off_t size = 0; |
| 2092 | char *tscdata; |
| 2093 | struct marker_info *info; |
| 2094 | |
| 2095 | switch((enum marker_id)tf->event.event_id) { |
| 2096 | case MARKER_ID_SET_MARKER_ID: |
| 2097 | size = strlen((char*)tf->event.data) + 1; |
| 2098 | g_debug("marker %s id set", (char*)tf->event.data); |
| 2099 | size += ltt_align(size, sizeof(guint16), tf->alignment); |
| 2100 | size += sizeof(guint16); |
| 2101 | size += sizeof(guint8); |
| 2102 | size += sizeof(guint8); |
| 2103 | size += sizeof(guint8); |
| 2104 | size += sizeof(guint8); |
| 2105 | size += sizeof(guint8); |
| 2106 | break; |
| 2107 | case MARKER_ID_SET_MARKER_FORMAT: |
| 2108 | g_debug("marker %s format set", (char*)tf->event.data); |
| 2109 | size = strlen((char*)tf->event.data) + 1; |
| 2110 | size += strlen((char*)tf->event.data + size) + 1; |
| 2111 | break; |
| 2112 | case MARKER_ID_HEARTBEAT_32: |
| 2113 | g_debug("Update Event heartbeat 32 bits"); |
| 2114 | break; |
| 2115 | case MARKER_ID_HEARTBEAT_64: |
| 2116 | g_debug("Update Event heartbeat 64 bits"); |
| 2117 | tscdata = (char*)(tf->event.data); |
| 2118 | tf->event.tsc = ltt_get_uint64(LTT_GET_BO(tf), tscdata); |
| 2119 | tf->buffer.tsc = tf->event.tsc; |
| 2120 | tf->event.event_time = ltt_interpolate_time(tf, &tf->event); |
| 2121 | size = ltt_align(size, sizeof(guint64), tf->alignment); |
| 2122 | size += sizeof(guint64); |
| 2123 | break; |
| 2124 | } |
| 2125 | |
| 2126 | info = marker_get_info_from_id(tf->trace, tf->event.event_id); |
| 2127 | |
| 2128 | if (tf->event.event_id >= MARKER_CORE_IDS) |
| 2129 | g_assert(info != NULL); |
| 2130 | |
| 2131 | /* Do not update field offsets of core markers when initially reading the |
| 2132 | * facility tracefile when the infos about these markers do not exist yet. |
| 2133 | */ |
| 2134 | if (likely(info && info->fields)) { |
| 2135 | if (info->size != -1) |
| 2136 | size = info->size; |
| 2137 | else |
| 2138 | size = marker_update_fields_offsets(marker_get_info_from_id(tf->trace, |
| 2139 | tf->event.event_id), tf->event.data); |
| 2140 | } |
| 2141 | |
| 2142 | tf->event.data_size = size; |
| 2143 | |
| 2144 | /* Check consistency between kernel and LTTV structure sizes */ |
| 2145 | if(tf->event.event_size == 0xFFFF) { |
| 2146 | /* Event size too big to fit in the event size field */ |
| 2147 | tf->event.event_size = tf->event.data_size; |
| 2148 | } |
| 2149 | |
| 2150 | if (a_event_debug) |
| 2151 | print_debug_event_data(&tf->event); |
| 2152 | |
| 2153 | /* Having a marker load or marker format event out of the facilities |
| 2154 | * tracefiles is a serious bug. */ |
| 2155 | switch((enum marker_id)tf->event.event_id) { |
| 2156 | case MARKER_ID_SET_MARKER_ID: |
| 2157 | case MARKER_ID_SET_MARKER_FORMAT: |
| 2158 | if (tf->name != g_quark_from_string("/control/facilities")) |
| 2159 | g_error("Trace inconsistency : metadata event found in data " |
| 2160 | "tracefile %s", g_quark_to_string(tf->long_name)); |
| 2161 | } |
| 2162 | |
| 2163 | if (tf->event.data_size != tf->event.event_size) { |
| 2164 | struct marker_info *info = marker_get_info_from_id(tf->trace, |
| 2165 | tf->event.event_id); |
| 2166 | g_error("Kernel/LTTV event size differs for event %s: kernel %u, LTTV %u", |
| 2167 | g_quark_to_string(info->name), |
| 2168 | tf->event.event_size, tf->event.data_size); |
| 2169 | exit(-1); |
| 2170 | } |
| 2171 | |
| 2172 | #if 0 |
| 2173 | LttEventType *event_type = |
| 2174 | ltt_facility_eventtype_get(f, tf->event.event_id); |
| 2175 | |
| 2176 | if(!event_type) { |
| 2177 | g_warning("Unknown event id %hhu in facility %s in tracefile %s", |
| 2178 | tf->event.event_id, |
| 2179 | g_quark_to_string(f->name), |
| 2180 | g_quark_to_string(tf->name)); |
| 2181 | goto event_type_error; |
| 2182 | } |
| 2183 | |
| 2184 | /* Compute the dynamic offsets */ |
| 2185 | compute_offsets(tf, f, event_type, &size, tf->event.data); |
| 2186 | |
| 2187 | //g_debug("Event root field : f.e %hhu.%hhu size %zd", |
| 2188 | // tf->event.facility_id, |
| 2189 | // tf->event.event_id, size); |
| 2190 | |
| 2191 | no_offset: |
| 2192 | tf->event.data_size = size; |
| 2193 | |
| 2194 | /* Check consistency between kernel and LTTV structure sizes */ |
| 2195 | if(tf->event.event_size == 0xFFFF) { |
| 2196 | /* Event size too big to fit in the event size field */ |
| 2197 | tf->event.event_size = tf->event.data_size; |
| 2198 | } |
| 2199 | if (tf->event.data_size != tf->event.event_size) { |
| 2200 | g_error("Kernel/LTTV event size differs for event %s.%s: kernel %u, LTTV %u", |
| 2201 | g_quark_to_string(f->name), g_quark_to_string(event_type->name), |
| 2202 | tf->event.event_size, tf->event.data_size); |
| 2203 | exit(-1); |
| 2204 | } |
| 2205 | //g_assert(tf->event.data_size == tf->event.event_size); |
| 2206 | |
| 2207 | return; |
| 2208 | |
| 2209 | event_type_error: |
| 2210 | event_id_error: |
| 2211 | if(tf->event.event_size == 0xFFFF) { |
| 2212 | g_error("Cannot jump over an unknown event bigger than 0xFFFE bytes"); |
| 2213 | } |
| 2214 | /* The facility is unknown : use the kernel information about this event |
| 2215 | * to jump over it. */ |
| 2216 | tf->event.data_size = tf->event.event_size; |
| 2217 | #endif //0 |
| 2218 | } |
| 2219 | |
| 2220 | |
| 2221 | /* Take the tf current event offset and use the event facility id and event id |
| 2222 | * to figure out where is the next event offset. |
| 2223 | * |
| 2224 | * This is an internal function not aiming at being used elsewhere : it will |
| 2225 | * not jump over the current block limits. Please consider using |
| 2226 | * ltt_tracefile_read to do this. |
| 2227 | * |
| 2228 | * Returns 0 on success |
| 2229 | * ERANGE if we are at the end of the buffer. |
| 2230 | * ENOPROTOOPT if an error occured when getting the current event size. |
| 2231 | */ |
| 2232 | int ltt_seek_next_event(LttTracefile *tf) |
| 2233 | { |
| 2234 | int ret = 0; |
| 2235 | void *pos; |
| 2236 | |
| 2237 | /* seek over the buffer header if we are at the buffer start */ |
| 2238 | if(tf->event.offset == 0) { |
| 2239 | tf->event.offset += tf->buffer_header_size; |
| 2240 | |
| 2241 | if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) { |
| 2242 | ret = ERANGE; |
| 2243 | } |
| 2244 | goto found; |
| 2245 | } |
| 2246 | |
| 2247 | |
| 2248 | pos = tf->event.data; |
| 2249 | |
| 2250 | if(tf->event.data_size < 0) goto error; |
| 2251 | |
| 2252 | pos += (size_t)tf->event.data_size; |
| 2253 | |
| 2254 | tf->event.offset = pos - tf->buffer.head; |
| 2255 | |
| 2256 | if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) { |
| 2257 | ret = ERANGE; |
| 2258 | goto found; |
| 2259 | } |
| 2260 | g_assert(tf->event.offset < tf->buf_size - tf->buffer.lost_size); |
| 2261 | |
| 2262 | found: |
| 2263 | return ret; |
| 2264 | |
| 2265 | error: |
| 2266 | g_error("Error in ltt_seek_next_event for tracefile %s", |
| 2267 | g_quark_to_string(tf->name)); |
| 2268 | return ENOPROTOOPT; |
| 2269 | } |
| 2270 | |
| 2271 | #if 0 |
| 2272 | /***************************************************************************** |
| 2273 | *Function name |
| 2274 | * calc_nsecs_per_cycle : calculate nsecs per cycle for current block |
| 2275 | * |
| 2276 | * 1.0 / (freq(khz) *1000) * 1000000000 |
| 2277 | *Input Params |
| 2278 | * t : tracefile |
| 2279 | ****************************************************************************/ |
| 2280 | /* from timer_tsc.c */ |
| 2281 | #define CYC2NS_SCALE_FACTOR 10 |
| 2282 | static guint32 calc_nsecs_per_cycle(LttTracefile * tf) |
| 2283 | { |
| 2284 | //return 1e6 / (double)tf->buffer.freq; |
| 2285 | guint32 cpu_mhz = tf->buffer.freq / 1000; |
| 2286 | guint32 cyc2ns_scale = (1000 << CYC2NS_SCALE_FACTOR)/cpu_mhz; |
| 2287 | |
| 2288 | return cyc2ns_scale; |
| 2289 | // return 1e6 / (double)tf->buffer.freq; |
| 2290 | } |
| 2291 | |
| 2292 | static guint64 cycles_2_ns(LttTracefile *tf, guint64 cycles) |
| 2293 | { |
| 2294 | return (cycles * tf->buffer.cyc2ns_scale) >> CYC2NS_SCALE_FACTOR; |
| 2295 | } |
| 2296 | #endif //0 |
| 2297 | |
| 2298 | #if 0 |
| 2299 | void setFieldsOffset(LttTracefile *tf, LttEventType *evT,void *evD) |
| 2300 | { |
| 2301 | LttField * rootFld = evT->root_field; |
| 2302 | // rootFld->base_address = evD; |
| 2303 | |
| 2304 | if(likely(rootFld)) |
| 2305 | rootFld->field_size = getFieldtypeSize(tf, evT->facility, |
| 2306 | evT, 0,0,rootFld, evD); |
| 2307 | } |
| 2308 | #endif //0 |
| 2309 | #if 0 |
| 2310 | /***************************************************************************** |
| 2311 | *Function name |
| 2312 | * set_fields_offsets : set the precomputable offset of the fields |
| 2313 | *Input params |
| 2314 | * tracefile : opened trace file |
| 2315 | * event_type : the event type |
| 2316 | ****************************************************************************/ |
| 2317 | |
| 2318 | void set_fields_offsets(LttTracefile *tf, LttEventType *event_type) |
| 2319 | { |
| 2320 | LttField *field = event_type->root_field; |
| 2321 | enum field_status fixed_root = FIELD_FIXED, fixed_parent = FIELD_FIXED; |
| 2322 | |
| 2323 | if(likely(field)) |
| 2324 | preset_field_type_size(tf, event_type, 0, 0, |
| 2325 | &fixed_root, &fixed_parent, |
| 2326 | field); |
| 2327 | |
| 2328 | } |
| 2329 | #endif //0 |
| 2330 | |
| 2331 | |
| 2332 | /***************************************************************************** |
| 2333 | *Function name |
| 2334 | * get_alignment : Get the alignment needed for a field. |
| 2335 | *Input params |
| 2336 | * field : field |
| 2337 | * |
| 2338 | * returns : The size on which it must be aligned. |
| 2339 | * |
| 2340 | ****************************************************************************/ |
| 2341 | #if 0 |
| 2342 | off_t get_alignment(LttField *field) |
| 2343 | { |
| 2344 | LttType *type = &field->field_type; |
| 2345 | |
| 2346 | switch(type->type_class) { |
| 2347 | case LTT_INT_FIXED: |
| 2348 | case LTT_UINT_FIXED: |
| 2349 | case LTT_POINTER: |
| 2350 | case LTT_CHAR: |
| 2351 | case LTT_UCHAR: |
| 2352 | case LTT_SHORT: |
| 2353 | case LTT_USHORT: |
| 2354 | case LTT_INT: |
| 2355 | case LTT_UINT: |
| 2356 | case LTT_LONG: |
| 2357 | case LTT_ULONG: |
| 2358 | case LTT_SIZE_T: |
| 2359 | case LTT_SSIZE_T: |
| 2360 | case LTT_OFF_T: |
| 2361 | case LTT_FLOAT: |
| 2362 | case LTT_ENUM: |
| 2363 | /* Align offset on type size */ |
| 2364 | g_assert(field->field_size != 0); |
| 2365 | return field->field_size; |
| 2366 | break; |
| 2367 | case LTT_STRING: |
| 2368 | return 1; |
| 2369 | break; |
| 2370 | case LTT_ARRAY: |
| 2371 | g_assert(type->fields->len == 1); |
| 2372 | { |
| 2373 | LttField *child = &g_array_index(type->fields, LttField, 0); |
| 2374 | return get_alignment(child); |
| 2375 | } |
| 2376 | break; |
| 2377 | case LTT_SEQUENCE: |
| 2378 | g_assert(type->fields->len == 2); |
| 2379 | { |
| 2380 | off_t localign = 1; |
| 2381 | LttField *child = &g_array_index(type->fields, LttField, 0); |
| 2382 | |
| 2383 | localign = max(localign, get_alignment(child)); |
| 2384 | |
| 2385 | child = &g_array_index(type->fields, LttField, 1); |
| 2386 | localign = max(localign, get_alignment(child)); |
| 2387 | |
| 2388 | return localign; |
| 2389 | } |
| 2390 | break; |
| 2391 | case LTT_STRUCT: |
| 2392 | case LTT_UNION: |
| 2393 | { |
| 2394 | guint i; |
| 2395 | off_t localign = 1; |
| 2396 | |
| 2397 | for(i=0; i<type->fields->len; i++) { |
| 2398 | LttField *child = &g_array_index(type->fields, LttField, i); |
| 2399 | localign = max(localign, get_alignment(child)); |
| 2400 | } |
| 2401 | return localign; |
| 2402 | } |
| 2403 | break; |
| 2404 | case LTT_NONE: |
| 2405 | default: |
| 2406 | g_error("get_alignment : unknown type"); |
| 2407 | return -1; |
| 2408 | } |
| 2409 | } |
| 2410 | |
| 2411 | #endif //0 |
| 2412 | |
| 2413 | /***************************************************************************** |
| 2414 | *Function name |
| 2415 | * field_compute_static_size : Determine the size of fields known by their |
| 2416 | * sole definition. Unions, arrays and struct sizes might be known, but |
| 2417 | * the parser does not give that information. |
| 2418 | *Input params |
| 2419 | * tf : tracefile |
| 2420 | * field : field |
| 2421 | * |
| 2422 | ****************************************************************************/ |
| 2423 | #if 0 |
| 2424 | void field_compute_static_size(LttFacility *fac, LttField *field) |
| 2425 | { |
| 2426 | LttType *type = &field->field_type; |
| 2427 | |
| 2428 | switch(type->type_class) { |
| 2429 | case LTT_INT_FIXED: |
| 2430 | case LTT_UINT_FIXED: |
| 2431 | case LTT_POINTER: |
| 2432 | case LTT_CHAR: |
| 2433 | case LTT_UCHAR: |
| 2434 | case LTT_SHORT: |
| 2435 | case LTT_USHORT: |
| 2436 | case LTT_INT: |
| 2437 | case LTT_UINT: |
| 2438 | case LTT_LONG: |
| 2439 | case LTT_ULONG: |
| 2440 | case LTT_SIZE_T: |
| 2441 | case LTT_SSIZE_T: |
| 2442 | case LTT_OFF_T: |
| 2443 | case LTT_FLOAT: |
| 2444 | case LTT_ENUM: |
| 2445 | case LTT_STRING: |
| 2446 | /* nothing to do */ |
| 2447 | break; |
| 2448 | case LTT_ARRAY: |
| 2449 | /* note this : array type size is the number of elements in the array, |
| 2450 | * while array field size of the length of the array in bytes */ |
| 2451 | g_assert(type->fields->len == 1); |
| 2452 | { |
| 2453 | LttField *child = &g_array_index(type->fields, LttField, 0); |
| 2454 | field_compute_static_size(fac, child); |
| 2455 | |
| 2456 | if(child->field_size != 0) { |
| 2457 | field->field_size = type->size * child->field_size; |
| 2458 | field->dynamic_offsets = g_array_sized_new(FALSE, TRUE, |
| 2459 | sizeof(off_t), type->size); |
| 2460 | } else { |
| 2461 | field->field_size = 0; |
| 2462 | } |
| 2463 | } |
| 2464 | break; |
| 2465 | case LTT_SEQUENCE: |
| 2466 | g_assert(type->fields->len == 2); |
| 2467 | { |
| 2468 | off_t local_offset = 0; |
| 2469 | LttField *child = &g_array_index(type->fields, LttField, 1); |
| 2470 | field_compute_static_size(fac, child); |
| 2471 | field->field_size = 0; |
| 2472 | type->size = 0; |
| 2473 | if(child->field_size != 0) { |
| 2474 | field->dynamic_offsets = g_array_sized_new(FALSE, TRUE, |
| 2475 | sizeof(off_t), SEQUENCE_AVG_ELEMENTS); |
| 2476 | } |
| 2477 | } |
| 2478 | break; |
| 2479 | case LTT_STRUCT: |
| 2480 | case LTT_UNION: |
| 2481 | { |
| 2482 | guint i; |
| 2483 | for(i=0;i<type->fields->len;i++) { |
| 2484 | LttField *child = &g_array_index(type->fields, LttField, i); |
| 2485 | field_compute_static_size(fac, child); |
| 2486 | if(child->field_size != 0) { |
| 2487 | type->size += ltt_align(type->size, get_alignment(child), |
| 2488 | fac->alignment); |
| 2489 | type->size += child->field_size; |
| 2490 | } else { |
| 2491 | /* As soon as we find a child with variable size, we have |
| 2492 | * a variable size */ |
| 2493 | type->size = 0; |
| 2494 | break; |
| 2495 | } |
| 2496 | } |
| 2497 | field->field_size = type->size; |
| 2498 | } |
| 2499 | break; |
| 2500 | default: |
| 2501 | g_error("field_static_size : unknown type"); |
| 2502 | } |
| 2503 | |
| 2504 | } |
| 2505 | #endif //0 |
| 2506 | |
| 2507 | |
| 2508 | /***************************************************************************** |
| 2509 | *Function name |
| 2510 | * precompute_fields_offsets : set the precomputable offset of the fields |
| 2511 | *Input params |
| 2512 | * fac : facility |
| 2513 | * field : the field |
| 2514 | * offset : pointer to the current offset, must be incremented |
| 2515 | * |
| 2516 | * return : 1 : found a variable length field, stop the processing. |
| 2517 | * 0 otherwise. |
| 2518 | ****************************************************************************/ |
| 2519 | |
| 2520 | #if 0 |
| 2521 | gint precompute_fields_offsets(LttFacility *fac, LttField *field, off_t *offset, gint is_compact) |
| 2522 | { |
| 2523 | LttType *type = &field->field_type; |
| 2524 | |
| 2525 | if(unlikely(is_compact)) { |
| 2526 | g_assert(field->field_size != 0); |
| 2527 | /* FIXME THIS IS A HUUUUUGE hack : |
| 2528 | * offset is between the compact_data field in struct LttEvent |
| 2529 | * and the address of the field root in the memory map. |
| 2530 | * ark. Both will stay at the same addresses while the event |
| 2531 | * is readable, so it's ok. |
| 2532 | */ |
| 2533 | field->offset_root = 0; |
| 2534 | field->fixed_root = FIELD_FIXED; |
| 2535 | return 0; |
| 2536 | } |
| 2537 | |
| 2538 | switch(type->type_class) { |
| 2539 | case LTT_INT_FIXED: |
| 2540 | case LTT_UINT_FIXED: |
| 2541 | case LTT_POINTER: |
| 2542 | case LTT_CHAR: |
| 2543 | case LTT_UCHAR: |
| 2544 | case LTT_SHORT: |
| 2545 | case LTT_USHORT: |
| 2546 | case LTT_INT: |
| 2547 | case LTT_UINT: |
| 2548 | case LTT_LONG: |
| 2549 | case LTT_ULONG: |
| 2550 | case LTT_SIZE_T: |
| 2551 | case LTT_SSIZE_T: |
| 2552 | case LTT_OFF_T: |
| 2553 | case LTT_FLOAT: |
| 2554 | case LTT_ENUM: |
| 2555 | g_assert(field->field_size != 0); |
| 2556 | /* Align offset on type size */ |
| 2557 | *offset += ltt_align(*offset, get_alignment(field), |
| 2558 | fac->alignment); |
| 2559 | /* remember offset */ |
| 2560 | field->offset_root = *offset; |
| 2561 | field->fixed_root = FIELD_FIXED; |
| 2562 | /* Increment offset */ |
| 2563 | *offset += field->field_size; |
| 2564 | return 0; |
| 2565 | break; |
| 2566 | case LTT_STRING: |
| 2567 | field->offset_root = *offset; |
| 2568 | field->fixed_root = FIELD_FIXED; |
| 2569 | return 1; |
| 2570 | break; |
| 2571 | case LTT_ARRAY: |
| 2572 | g_assert(type->fields->len == 1); |
| 2573 | { |
| 2574 | LttField *child = &g_array_index(type->fields, LttField, 0); |
| 2575 | |
| 2576 | *offset += ltt_align(*offset, get_alignment(field), |
| 2577 | fac->alignment); |
| 2578 | |
| 2579 | /* remember offset */ |
| 2580 | field->offset_root = *offset; |
| 2581 | field->array_offset = *offset; |
| 2582 | field->fixed_root = FIELD_FIXED; |
| 2583 | |
| 2584 | /* Let the child be variable */ |
| 2585 | //precompute_fields_offsets(tf, child, offset); |
| 2586 | |
| 2587 | if(field->field_size != 0) { |
| 2588 | /* Increment offset */ |
| 2589 | /* field_size is the array size in bytes */ |
| 2590 | *offset += field->field_size; |
| 2591 | return 0; |
| 2592 | } else { |
| 2593 | return 1; |
| 2594 | } |
| 2595 | } |
| 2596 | break; |
| 2597 | case LTT_SEQUENCE: |
| 2598 | g_assert(type->fields->len == 2); |
| 2599 | { |
| 2600 | LttField *child; |
| 2601 | guint ret; |
| 2602 | |
| 2603 | *offset += ltt_align(*offset, get_alignment(field), |
| 2604 | fac->alignment); |
| 2605 | |
| 2606 | /* remember offset */ |
| 2607 | field->offset_root = *offset; |
| 2608 | field->fixed_root = FIELD_FIXED; |
| 2609 | |
| 2610 | child = &g_array_index(type->fields, LttField, 0); |
| 2611 | ret = precompute_fields_offsets(fac, child, offset, is_compact); |
| 2612 | g_assert(ret == 0); /* Seq len cannot have variable len */ |
| 2613 | |
| 2614 | child = &g_array_index(type->fields, LttField, 1); |
| 2615 | *offset += ltt_align(*offset, get_alignment(child), |
| 2616 | fac->alignment); |
| 2617 | field->array_offset = *offset; |
| 2618 | /* Let the child be variable. */ |
| 2619 | //ret = precompute_fields_offsets(fac, child, offset); |
| 2620 | |
| 2621 | /* Cannot precompute fields offsets of sequence members, and has |
| 2622 | * variable length. */ |
| 2623 | return 1; |
| 2624 | } |
| 2625 | break; |
| 2626 | case LTT_STRUCT: |
| 2627 | { |
| 2628 | LttField *child; |
| 2629 | guint i; |
| 2630 | gint ret=0; |
| 2631 | |
| 2632 | *offset += ltt_align(*offset, get_alignment(field), |
| 2633 | fac->alignment); |
| 2634 | /* remember offset */ |
| 2635 | field->offset_root = *offset; |
| 2636 | field->fixed_root = FIELD_FIXED; |
| 2637 | |
| 2638 | for(i=0; i< type->fields->len; i++) { |
| 2639 | child = &g_array_index(type->fields, LttField, i); |
| 2640 | ret = precompute_fields_offsets(fac, child, offset, is_compact); |
| 2641 | |
| 2642 | if(ret) break; |
| 2643 | } |
| 2644 | return ret; |
| 2645 | } |
| 2646 | break; |
| 2647 | case LTT_UNION: |
| 2648 | { |
| 2649 | LttField *child; |
| 2650 | guint i; |
| 2651 | gint ret=0; |
| 2652 | |
| 2653 | *offset += ltt_align(*offset, get_alignment(field), |
| 2654 | fac->alignment); |
| 2655 | /* remember offset */ |
| 2656 | field->offset_root = *offset; |
| 2657 | field->fixed_root = FIELD_FIXED; |
| 2658 | |
| 2659 | for(i=0; i< type->fields->len; i++) { |
| 2660 | *offset = field->offset_root; |
| 2661 | child = &g_array_index(type->fields, LttField, i); |
| 2662 | ret = precompute_fields_offsets(fac, child, offset, is_compact); |
| 2663 | |
| 2664 | if(ret) break; |
| 2665 | } |
| 2666 | *offset = field->offset_root + field->field_size; |
| 2667 | return ret; |
| 2668 | } |
| 2669 | |
| 2670 | break; |
| 2671 | case LTT_NONE: |
| 2672 | default: |
| 2673 | g_error("precompute_fields_offsets : unknown type"); |
| 2674 | return 1; |
| 2675 | } |
| 2676 | |
| 2677 | } |
| 2678 | |
| 2679 | #endif //0 |
| 2680 | |
| 2681 | #if 0 |
| 2682 | /***************************************************************************** |
| 2683 | *Function name |
| 2684 | * precompute_offsets : set the precomputable offset of an event type |
| 2685 | *Input params |
| 2686 | * tf : tracefile |
| 2687 | * event : event type |
| 2688 | * |
| 2689 | ****************************************************************************/ |
| 2690 | void precompute_offsets(LttFacility *fac, LttEventType *event) |
| 2691 | { |
| 2692 | guint i; |
| 2693 | off_t offset = 0; |
| 2694 | gint ret; |
| 2695 | |
| 2696 | /* First, compute the size of fixed size fields. Will determine size for |
| 2697 | * arrays, struct and unions, which is not done by the parser */ |
| 2698 | for(i=0; i<event->fields->len; i++) { |
| 2699 | LttField *field = &g_array_index(event->fields, LttField, i); |
| 2700 | field_compute_static_size(fac, field); |
| 2701 | } |
| 2702 | |
| 2703 | /* Precompute all known offsets */ |
| 2704 | for(i=0; i<event->fields->len; i++) { |
| 2705 | LttField *field = &g_array_index(event->fields, LttField, i); |
| 2706 | if(event->has_compact_data && i == 0) |
| 2707 | ret = precompute_fields_offsets(fac, field, &offset, 1); |
| 2708 | else |
| 2709 | ret = precompute_fields_offsets(fac, field, &offset, 0); |
| 2710 | if(ret) break; |
| 2711 | } |
| 2712 | } |
| 2713 | #endif //0 |
| 2714 | |
| 2715 | |
| 2716 | |
| 2717 | /***************************************************************************** |
| 2718 | *Function name |
| 2719 | * preset_field_type_size : set the fixed sizes of the field type |
| 2720 | *Input params |
| 2721 | * tf : tracefile |
| 2722 | * event_type : event type |
| 2723 | * offset_root : offset from the root |
| 2724 | * offset_parent : offset from the parent |
| 2725 | * fixed_root : Do we know a fixed offset to the root ? |
| 2726 | * fixed_parent : Do we know a fixed offset to the parent ? |
| 2727 | * field : field |
| 2728 | ****************************************************************************/ |
| 2729 | |
| 2730 | |
| 2731 | |
| 2732 | // preset the fixed size offsets. Calculate them just like genevent-new : an |
| 2733 | // increment of a *to value that represents the offset from the start of the |
| 2734 | // event data. |
| 2735 | // The preset information is : offsets up to (and including) the first element |
| 2736 | // of variable size. All subsequent fields must be flagged "VARIABLE OFFSET". |
| 2737 | #if 0 |
| 2738 | void preset_field_type_size(LttTracefile *tf, LttEventType *event_type, |
| 2739 | off_t offset_root, off_t offset_parent, |
| 2740 | enum field_status *fixed_root, enum field_status *fixed_parent, |
| 2741 | LttField *field) |
| 2742 | { |
| 2743 | enum field_status local_fixed_root, local_fixed_parent; |
| 2744 | guint i; |
| 2745 | LttType *type; |
| 2746 | |
| 2747 | g_assert(field->fixed_root == FIELD_UNKNOWN); |
| 2748 | g_assert(field->fixed_parent == FIELD_UNKNOWN); |
| 2749 | g_assert(field->fixed_size == FIELD_UNKNOWN); |
| 2750 | |
| 2751 | type = field->field_type; |
| 2752 | |
| 2753 | field->fixed_root = *fixed_root; |
| 2754 | if(field->fixed_root == FIELD_FIXED) |
| 2755 | field->offset_root = offset_root; |
| 2756 | else |
| 2757 | field->offset_root = 0; |
| 2758 | |
| 2759 | field->fixed_parent = *fixed_parent; |
| 2760 | if(field->fixed_parent == FIELD_FIXED) |
| 2761 | field->offset_parent = offset_parent; |
| 2762 | else |
| 2763 | field->offset_parent = 0; |
| 2764 | |
| 2765 | size_t current_root_offset; |
| 2766 | size_t current_offset; |
| 2767 | enum field_status current_child_status, final_child_status; |
| 2768 | size_t max_size; |
| 2769 | |
| 2770 | switch(type->type_class) { |
| 2771 | case LTT_INT_FIXED: |
| 2772 | case LTT_UINT_FIXED: |
| 2773 | case LTT_CHAR: |
| 2774 | case LTT_UCHAR: |
| 2775 | case LTT_SHORT: |
| 2776 | case LTT_USHORT: |
| 2777 | case LTT_INT: |
| 2778 | case LTT_UINT: |
| 2779 | case LTT_FLOAT: |
| 2780 | case LTT_ENUM: |
| 2781 | field->field_size = ltt_type_size(tf->trace, type); |
| 2782 | field->fixed_size = FIELD_FIXED; |
| 2783 | break; |
| 2784 | case LTT_POINTER: |
| 2785 | field->field_size = (off_t)event_type->facility->pointer_size; |
| 2786 | field->fixed_size = FIELD_FIXED; |
| 2787 | break; |
| 2788 | case LTT_LONG: |
| 2789 | case LTT_ULONG: |
| 2790 | field->field_size = (off_t)event_type->facility->long_size; |
| 2791 | field->fixed_size = FIELD_FIXED; |
| 2792 | break; |
| 2793 | case LTT_SIZE_T: |
| 2794 | case LTT_SSIZE_T: |
| 2795 | case LTT_OFF_T: |
| 2796 | field->field_size = (off_t)event_type->facility->size_t_size; |
| 2797 | field->fixed_size = FIELD_FIXED; |
| 2798 | break; |
| 2799 | case LTT_SEQUENCE: |
| 2800 | local_fixed_root = FIELD_VARIABLE; |
| 2801 | local_fixed_parent = FIELD_VARIABLE; |
| 2802 | preset_field_type_size(tf, event_type, |
| 2803 | 0, 0, |
| 2804 | &local_fixed_root, &local_fixed_parent, |
| 2805 | field->child[0]); |
| 2806 | field->fixed_size = FIELD_VARIABLE; |
| 2807 | field->field_size = 0; |
| 2808 | *fixed_root = FIELD_VARIABLE; |
| 2809 | *fixed_parent = FIELD_VARIABLE; |
| 2810 | break; |
| 2811 | case LTT_STRING: |
| 2812 | field->fixed_size = FIELD_VARIABLE; |
| 2813 | field->field_size = 0; |
| 2814 | *fixed_root = FIELD_VARIABLE; |
| 2815 | *fixed_parent = FIELD_VARIABLE; |
| 2816 | break; |
| 2817 | case LTT_ARRAY: |
| 2818 | local_fixed_root = FIELD_VARIABLE; |
| 2819 | local_fixed_parent = FIELD_VARIABLE; |
| 2820 | preset_field_type_size(tf, event_type, |
| 2821 | 0, 0, |
| 2822 | &local_fixed_root, &local_fixed_parent, |
| 2823 | field->child[0]); |
| 2824 | field->fixed_size = field->child[0]->fixed_size; |
| 2825 | if(field->fixed_size == FIELD_FIXED) { |
| 2826 | field->field_size = type->element_number * field->child[0]->field_size; |
| 2827 | } else { |
| 2828 | field->field_size = 0; |
| 2829 | *fixed_root = FIELD_VARIABLE; |
| 2830 | *fixed_parent = FIELD_VARIABLE; |
| 2831 | } |
| 2832 | break; |
| 2833 | case LTT_STRUCT: |
| 2834 | current_root_offset = field->offset_root; |
| 2835 | current_offset = 0; |
| 2836 | current_child_status = FIELD_FIXED; |
| 2837 | for(i=0;i<type->element_number;i++) { |
| 2838 | preset_field_type_size(tf, event_type, |
| 2839 | current_root_offset, current_offset, |
| 2840 | fixed_root, ¤t_child_status, |
| 2841 | field->child[i]); |
| 2842 | if(current_child_status == FIELD_FIXED) { |
| 2843 | current_root_offset += field->child[i]->field_size; |
| 2844 | current_offset += field->child[i]->field_size; |
| 2845 | } else { |
| 2846 | current_root_offset = 0; |
| 2847 | current_offset = 0; |
| 2848 | } |
| 2849 | } |
| 2850 | if(current_child_status != FIELD_FIXED) { |
| 2851 | *fixed_parent = current_child_status; |
| 2852 | field->field_size = 0; |
| 2853 | field->fixed_size = current_child_status; |
| 2854 | } else { |
| 2855 | field->field_size = current_offset; |
| 2856 | field->fixed_size = FIELD_FIXED; |
| 2857 | } |
| 2858 | break; |
| 2859 | case LTT_UNION: |
| 2860 | current_root_offset = field->offset_root; |
| 2861 | current_offset = 0; |
| 2862 | max_size = 0; |
| 2863 | final_child_status = FIELD_FIXED; |
| 2864 | for(i=0;i<type->element_number;i++) { |
| 2865 | enum field_status current_root_child_status = FIELD_FIXED; |
| 2866 | enum field_status current_child_status = FIELD_FIXED; |
| 2867 | preset_field_type_size(tf, event_type, |
| 2868 | current_root_offset, current_offset, |
| 2869 | ¤t_root_child_status, ¤t_child_status, |
| 2870 | field->child[i]); |
| 2871 | if(current_child_status != FIELD_FIXED) |
| 2872 | final_child_status = current_child_status; |
| 2873 | else |
| 2874 | max_size = max(max_size, field->child[i]->field_size); |
| 2875 | } |
| 2876 | if(final_child_status != FIELD_FIXED) { |
| 2877 | g_error("LTTV does not support variable size fields in unions."); |
| 2878 | /* This will stop the application. */ |
| 2879 | *fixed_root = final_child_status; |
| 2880 | *fixed_parent = final_child_status; |
| 2881 | field->field_size = 0; |
| 2882 | field->fixed_size = current_child_status; |
| 2883 | } else { |
| 2884 | field->field_size = max_size; |
| 2885 | field->fixed_size = FIELD_FIXED; |
| 2886 | } |
| 2887 | break; |
| 2888 | case LTT_NONE: |
| 2889 | g_error("unexpected type NONE"); |
| 2890 | break; |
| 2891 | } |
| 2892 | |
| 2893 | } |
| 2894 | #endif //0 |
| 2895 | |
| 2896 | /***************************************************************************** |
| 2897 | *Function name |
| 2898 | * check_fields_compatibility : Check for compatibility between two fields : |
| 2899 | * do they use the same inner structure ? |
| 2900 | *Input params |
| 2901 | * event_type1 : event type |
| 2902 | * event_type2 : event type |
| 2903 | * field1 : field |
| 2904 | * field2 : field |
| 2905 | *Returns : 0 if identical |
| 2906 | * 1 if not. |
| 2907 | ****************************************************************************/ |
| 2908 | // this function checks for equality of field types. Therefore, it does not use |
| 2909 | // per se offsets. For instance, an aligned version of a structure is |
| 2910 | // compatible with an unaligned version of the same structure. |
| 2911 | #if 0 |
| 2912 | gint check_fields_compatibility(LttEventType *event_type1, |
| 2913 | LttEventType *event_type2, |
| 2914 | LttField *field1, LttField *field2) |
| 2915 | { |
| 2916 | guint different = 0; |
| 2917 | LttType *type1; |
| 2918 | LttType *type2; |
| 2919 | |
| 2920 | if(field1 == NULL) { |
| 2921 | if(field2 == NULL) goto end; |
| 2922 | else { |
| 2923 | different = 1; |
| 2924 | goto end; |
| 2925 | } |
| 2926 | } else if(field2 == NULL) { |
| 2927 | different = 1; |
| 2928 | goto end; |
| 2929 | } |
| 2930 | |
| 2931 | type1 = &field1->field_type; |
| 2932 | type2 = &field2->field_type; |
| 2933 | |
| 2934 | if(type1->type_class != type2->type_class) { |
| 2935 | different = 1; |
| 2936 | goto end; |
| 2937 | } |
| 2938 | if(type1->network != type2->network) { |
| 2939 | different = 1; |
| 2940 | goto end; |
| 2941 | } |
| 2942 | |
| 2943 | switch(type1->type_class) { |
| 2944 | case LTT_INT_FIXED: |
| 2945 | case LTT_UINT_FIXED: |
| 2946 | case LTT_POINTER: |
| 2947 | case LTT_CHAR: |
| 2948 | case LTT_UCHAR: |
| 2949 | case LTT_SHORT: |
| 2950 | case LTT_USHORT: |
| 2951 | case LTT_INT: |
| 2952 | case LTT_UINT: |
| 2953 | case LTT_LONG: |
| 2954 | case LTT_ULONG: |
| 2955 | case LTT_SIZE_T: |
| 2956 | case LTT_SSIZE_T: |
| 2957 | case LTT_OFF_T: |
| 2958 | case LTT_FLOAT: |
| 2959 | case LTT_ENUM: |
| 2960 | if(field1->field_size != field2->field_size) |
| 2961 | different = 1; |
| 2962 | break; |
| 2963 | case LTT_STRING: |
| 2964 | break; |
| 2965 | case LTT_ARRAY: |
| 2966 | { |
| 2967 | LttField *child1 = &g_array_index(type1->fields, LttField, 0); |
| 2968 | LttField *child2 = &g_array_index(type2->fields, LttField, 0); |
| 2969 | |
| 2970 | if(type1->size != type2->size) |
| 2971 | different = 1; |
| 2972 | if(check_fields_compatibility(event_type1, event_type2, child1, child2)) |
| 2973 | different = 1; |
| 2974 | } |
| 2975 | break; |
| 2976 | case LTT_SEQUENCE: |
| 2977 | { |
| 2978 | LttField *child1 = &g_array_index(type1->fields, LttField, 1); |
| 2979 | LttField *child2 = &g_array_index(type2->fields, LttField, 1); |
| 2980 | |
| 2981 | if(check_fields_compatibility(event_type1, event_type2, child1, child2)) |
| 2982 | different = 1; |
| 2983 | } |
| 2984 | break; |
| 2985 | case LTT_STRUCT: |
| 2986 | case LTT_UNION: |
| 2987 | { |
| 2988 | LttField *child; |
| 2989 | guint i; |
| 2990 | |
| 2991 | if(type1->fields->len != type2->fields->len) { |
| 2992 | different = 1; |
| 2993 | goto end; |
| 2994 | } |
| 2995 | |
| 2996 | for(i=0; i< type1->fields->len; i++) { |
| 2997 | LttField *child1; |
| 2998 | LttField *child2; |
| 2999 | child1 = &g_array_index(type1->fields, LttField, i); |
| 3000 | child2 = &g_array_index(type2->fields, LttField, i); |
| 3001 | different = check_fields_compatibility(event_type1, |
| 3002 | event_type2, child1, child2); |
| 3003 | |
| 3004 | if(different) break; |
| 3005 | } |
| 3006 | } |
| 3007 | break; |
| 3008 | case LTT_NONE: |
| 3009 | default: |
| 3010 | g_error("check_fields_compatibility : unknown type"); |
| 3011 | } |
| 3012 | |
| 3013 | end: |
| 3014 | return different; |
| 3015 | } |
| 3016 | #endif //0 |
| 3017 | |
| 3018 | #if 0 |
| 3019 | gint check_fields_compatibility(LttEventType *event_type1, |
| 3020 | LttEventType *event_type2, |
| 3021 | LttField *field1, LttField *field2) |
| 3022 | { |
| 3023 | guint different = 0; |
| 3024 | guint i; |
| 3025 | LttType *type1; |
| 3026 | LttType *type2; |
| 3027 | |
| 3028 | if(field1 == NULL) { |
| 3029 | if(field2 == NULL) goto end; |
| 3030 | else { |
| 3031 | different = 1; |
| 3032 | goto end; |
| 3033 | } |
| 3034 | } else if(field2 == NULL) { |
| 3035 | different = 1; |
| 3036 | goto end; |
| 3037 | } |
| 3038 | |
| 3039 | g_assert(field1->fixed_root != FIELD_UNKNOWN); |
| 3040 | g_assert(field2->fixed_root != FIELD_UNKNOWN); |
| 3041 | g_assert(field1->fixed_parent != FIELD_UNKNOWN); |
| 3042 | g_assert(field2->fixed_parent != FIELD_UNKNOWN); |
| 3043 | g_assert(field1->fixed_size != FIELD_UNKNOWN); |
| 3044 | g_assert(field2->fixed_size != FIELD_UNKNOWN); |
| 3045 | |
| 3046 | type1 = field1->field_type; |
| 3047 | type2 = field2->field_type; |
| 3048 | |
| 3049 | if(type1->type_class != type2->type_class) { |
| 3050 | different = 1; |
| 3051 | goto end; |
| 3052 | } |
| 3053 | if(type1->element_name != type2->element_name) { |
| 3054 | different = 1; |
| 3055 | goto end; |
| 3056 | } |
| 3057 | |
| 3058 | switch(type1->type_class) { |
| 3059 | case LTT_INT_FIXED: |
| 3060 | case LTT_UINT_FIXED: |
| 3061 | case LTT_POINTER: |
| 3062 | case LTT_CHAR: |
| 3063 | case LTT_UCHAR: |
| 3064 | case LTT_SHORT: |
| 3065 | case LTT_USHORT: |
| 3066 | case LTT_INT: |
| 3067 | case LTT_UINT: |
| 3068 | case LTT_FLOAT: |
| 3069 | case LTT_POINTER: |
| 3070 | case LTT_LONG: |
| 3071 | case LTT_ULONG: |
| 3072 | case LTT_SIZE_T: |
| 3073 | case LTT_SSIZE_T: |
| 3074 | case LTT_OFF_T: |
| 3075 | if(field1->field_size != field2->field_size) { |
| 3076 | different = 1; |
| 3077 | goto end; |
| 3078 | } |
| 3079 | break; |
| 3080 | case LTT_ENUM: |
| 3081 | if(type1->element_number != type2->element_number) { |
| 3082 | different = 1; |
| 3083 | goto end; |
| 3084 | } |
| 3085 | for(i=0;i<type1->element_number;i++) { |
| 3086 | if(type1->enum_strings[i] != type2->enum_strings[i]) { |
| 3087 | different = 1; |
| 3088 | goto end; |
| 3089 | } |
| 3090 | } |
| 3091 | break; |
| 3092 | case LTT_SEQUENCE: |
| 3093 | /* Two elements : size and child */ |
| 3094 | g_assert(type1->element_number != type2->element_number); |
| 3095 | for(i=0;i<type1->element_number;i++) { |
| 3096 | if(check_fields_compatibility(event_type1, event_type2, |
| 3097 | field1->child[0], field2->child[0])) { |
| 3098 | different = 1; |
| 3099 | goto end; |
| 3100 | } |
| 3101 | } |
| 3102 | break; |
| 3103 | case LTT_STRING: |
| 3104 | break; |
| 3105 | case LTT_ARRAY: |
| 3106 | if(field1->field_size != field2->field_size) { |
| 3107 | different = 1; |
| 3108 | goto end; |
| 3109 | } |
| 3110 | /* Two elements : size and child */ |
| 3111 | g_assert(type1->element_number != type2->element_number); |
| 3112 | for(i=0;i<type1->element_number;i++) { |
| 3113 | if(check_fields_compatibility(event_type1, event_type2, |
| 3114 | field1->child[0], field2->child[0])) { |
| 3115 | different = 1; |
| 3116 | goto end; |
| 3117 | } |
| 3118 | } |
| 3119 | break; |
| 3120 | case LTT_STRUCT: |
| 3121 | case LTT_UNION: |
| 3122 | if(type1->element_number != type2->element_number) { |
| 3123 | different = 1; |
| 3124 | break; |
| 3125 | } |
| 3126 | for(i=0;i<type1->element_number;i++) { |
| 3127 | if(check_fields_compatibility(event_type1, event_type2, |
| 3128 | field1->child[0], field2->child[0])) { |
| 3129 | different = 1; |
| 3130 | goto end; |
| 3131 | } |
| 3132 | } |
| 3133 | break; |
| 3134 | } |
| 3135 | end: |
| 3136 | return different; |
| 3137 | } |
| 3138 | #endif //0 |
| 3139 | |
| 3140 | |
| 3141 | /***************************************************************************** |
| 3142 | *Function name |
| 3143 | * ltt_get_int : get an integer number |
| 3144 | *Input params |
| 3145 | * reverse_byte_order: must we reverse the byte order ? |
| 3146 | * size : the size of the integer |
| 3147 | * ptr : the data pointer |
| 3148 | *Return value |
| 3149 | * gint64 : a 64 bits integer |
| 3150 | ****************************************************************************/ |
| 3151 | |
| 3152 | gint64 ltt_get_int(gboolean reverse_byte_order, gint size, void *data) |
| 3153 | { |
| 3154 | gint64 val; |
| 3155 | |
| 3156 | switch(size) { |
| 3157 | case 1: val = *((gint8*)data); break; |
| 3158 | case 2: val = ltt_get_int16(reverse_byte_order, data); break; |
| 3159 | case 4: val = ltt_get_int32(reverse_byte_order, data); break; |
| 3160 | case 8: val = ltt_get_int64(reverse_byte_order, data); break; |
| 3161 | default: val = ltt_get_int64(reverse_byte_order, data); |
| 3162 | g_critical("get_int : integer size %d unknown", size); |
| 3163 | break; |
| 3164 | } |
| 3165 | |
| 3166 | return val; |
| 3167 | } |
| 3168 | |
| 3169 | /***************************************************************************** |
| 3170 | *Function name |
| 3171 | * ltt_get_uint : get an unsigned integer number |
| 3172 | *Input params |
| 3173 | * reverse_byte_order: must we reverse the byte order ? |
| 3174 | * size : the size of the integer |
| 3175 | * ptr : the data pointer |
| 3176 | *Return value |
| 3177 | * guint64 : a 64 bits unsigned integer |
| 3178 | ****************************************************************************/ |
| 3179 | |
| 3180 | guint64 ltt_get_uint(gboolean reverse_byte_order, gint size, void *data) |
| 3181 | { |
| 3182 | guint64 val; |
| 3183 | |
| 3184 | switch(size) { |
| 3185 | case 1: val = *((gint8*)data); break; |
| 3186 | case 2: val = ltt_get_uint16(reverse_byte_order, data); break; |
| 3187 | case 4: val = ltt_get_uint32(reverse_byte_order, data); break; |
| 3188 | case 8: val = ltt_get_uint64(reverse_byte_order, data); break; |
| 3189 | default: val = ltt_get_uint64(reverse_byte_order, data); |
| 3190 | g_critical("get_uint : unsigned integer size %d unknown", |
| 3191 | size); |
| 3192 | break; |
| 3193 | } |
| 3194 | |
| 3195 | return val; |
| 3196 | } |
| 3197 | |
| 3198 | |
| 3199 | /* get the node name of the system */ |
| 3200 | |
| 3201 | char * ltt_trace_system_description_node_name (LttSystemDescription * s) |
| 3202 | { |
| 3203 | return s->node_name; |
| 3204 | } |
| 3205 | |
| 3206 | |
| 3207 | /* get the domain name of the system */ |
| 3208 | |
| 3209 | char * ltt_trace_system_description_domain_name (LttSystemDescription * s) |
| 3210 | { |
| 3211 | return s->domain_name; |
| 3212 | } |
| 3213 | |
| 3214 | |
| 3215 | /* get the description of the system */ |
| 3216 | |
| 3217 | char * ltt_trace_system_description_description (LttSystemDescription * s) |
| 3218 | { |
| 3219 | return s->description; |
| 3220 | } |
| 3221 | |
| 3222 | |
| 3223 | /* get the NTP corrected start time of the trace */ |
| 3224 | LttTime ltt_trace_start_time(LttTrace *t) |
| 3225 | { |
| 3226 | return t->start_time; |
| 3227 | } |
| 3228 | |
| 3229 | /* get the monotonic start time of the trace */ |
| 3230 | LttTime ltt_trace_start_time_monotonic(LttTrace *t) |
| 3231 | { |
| 3232 | return t->start_time_from_tsc; |
| 3233 | } |
| 3234 | |
| 3235 | LttTracefile *ltt_tracefile_new() |
| 3236 | { |
| 3237 | LttTracefile *tf; |
| 3238 | tf = g_new(LttTracefile, 1); |
| 3239 | tf->event.tracefile = tf; |
| 3240 | return tf; |
| 3241 | } |
| 3242 | |
| 3243 | void ltt_tracefile_destroy(LttTracefile *tf) |
| 3244 | { |
| 3245 | g_free(tf); |
| 3246 | } |
| 3247 | |
| 3248 | void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src) |
| 3249 | { |
| 3250 | *dest = *src; |
| 3251 | } |
| 3252 | |
| 3253 | /* Before library loading... */ |
| 3254 | |
| 3255 | void init(void) |
| 3256 | { |
| 3257 | LTT_FACILITY_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); |
| 3258 | LTT_EVENT_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); |
| 3259 | LTT_EVENT_NAME_HEARTBEAT_FULL = g_quark_from_string("heartbeat_full"); |
| 3260 | |
| 3261 | LTT_TRACEFILE_NAME_FACILITIES = g_quark_from_string("/control/facilities"); |
| 3262 | } |