Commit | Line | Data |
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449cb9d7 | 1 | /* This file is part of the Linux Trace Toolkit viewer |
3aee1200 | 2 | * Copyright (C) 2005 Mathieu Desnoyers |
449cb9d7 | 3 | * |
3aee1200 | 4 | * Complete rewrite from the original version made by XangXiu Yang. |
5 | * | |
1b44b0b5 | 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. | |
449cb9d7 | 9 | * |
1b44b0b5 | 10 | * This library is distributed in the hope that it will be useful, |
449cb9d7 | 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
1b44b0b5 | 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. | |
449cb9d7 | 14 | * |
1b44b0b5 | 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. | |
449cb9d7 | 19 | */ |
20 | ||
4e4d11b3 | 21 | #ifdef HAVE_CONFIG_H |
22 | #include <config.h> | |
23 | #endif | |
24 | ||
6cd62ccf | 25 | #include <stdio.h> |
26 | #include <fcntl.h> | |
8d1e6362 | 27 | #include <string.h> |
28 | #include <dirent.h> | |
6cd62ccf | 29 | #include <sys/stat.h> |
30 | #include <sys/types.h> | |
8d1e6362 | 31 | #include <errno.h> |
32 | #include <unistd.h> | |
42db9bf1 | 33 | #include <math.h> |
cdf90f40 | 34 | #include <glib.h> |
43ed82b5 | 35 | #include <glib/gprintf.h> |
3aee1200 | 36 | #include <malloc.h> |
37 | #include <sys/mman.h> | |
dd3a6d39 | 38 | #include <string.h> |
43ed82b5 | 39 | #include <ctype.h> |
40 | #include <inttypes.h> | |
6cd62ccf | 41 | |
ef35d837 | 42 | // For realpath |
43 | #include <limits.h> | |
44 | #include <stdlib.h> | |
45 | ||
46 | ||
a5dcde2f | 47 | #include <ltt/ltt.h> |
48 | #include "ltt-private.h" | |
963b5f2d | 49 | #include <ltt/trace.h> |
c02ea99f | 50 | #include <ltt/event.h> |
1a2ceb63 | 51 | #include <ltt/ltt-types.h> |
bb38a290 | 52 | #include <ltt/marker.h> |
3aee1200 | 53 | |
f0241068 MD |
54 | #define DEFAULT_N_BLOCKS 32 |
55 | ||
43ed82b5 | 56 | /* from marker.c */ |
57 | extern long marker_update_fields_offsets(struct marker_info *info, const char *data); | |
58 | ||
2fc874ab | 59 | /* Tracefile names used in this file */ |
3aee1200 | 60 | |
2fc874ab | 61 | GQuark LTT_TRACEFILE_NAME_METADATA; |
3aee1200 | 62 | |
86005ded | 63 | #ifndef g_open |
64 | #define g_open open | |
65 | #endif | |
66 | ||
67 | ||
51b5991e | 68 | #define __UNUSED__ __attribute__((__unused__)) |
6cd62ccf | 69 | |
a1062ddd | 70 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
3aee1200 | 71 | |
72 | #ifndef g_debug | |
a1062ddd | 73 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
3aee1200 | 74 | #endif |
a1062ddd | 75 | |
45e14832 | 76 | #define g_close close |
8959a0c8 | 77 | |
b77d1b57 | 78 | /* Those macros must be called from within a function where page_size is a known |
79 | * variable */ | |
80 | #define PAGE_MASK (~(page_size-1)) | |
81 | #define PAGE_ALIGN(addr) (((addr)+page_size-1)&PAGE_MASK) | |
82 | ||
6cd62ccf | 83 | /* set the offset of the fields belonging to the event, |
84 | need the information of the archecture */ | |
f104d082 | 85 | //void set_fields_offsets(LttTracefile *tf, LttEventType *event_type); |
eed2ef37 | 86 | //size_t get_fields_offsets(LttTracefile *tf, LttEventType *event_type, void *data); |
6cd62ccf | 87 | |
3aee1200 | 88 | /* map a fixed size or a block information from the file (fd) */ |
89 | static gint map_block(LttTracefile * tf, guint block_num); | |
90 | ||
91 | /* calculate nsec per cycles for current block */ | |
791dffa6 | 92 | #if 0 |
93 | static guint32 calc_nsecs_per_cycle(LttTracefile * t); | |
94 | static guint64 cycles_2_ns(LttTracefile *tf, guint64 cycles); | |
95 | #endif //0 | |
6cd62ccf | 96 | |
3aee1200 | 97 | /* go to the next event */ |
98 | static int ltt_seek_next_event(LttTracefile *tf); | |
6cd62ccf | 99 | |
3c165eaf | 100 | static int open_tracefiles(LttTrace *trace, gchar *root_path, |
101 | gchar *relative_path); | |
2fc874ab | 102 | static int ltt_process_metadata_tracefile(LttTracefile *tf); |
3c165eaf | 103 | static void ltt_tracefile_time_span_get(LttTracefile *tf, |
104 | LttTime *start, LttTime *end); | |
105 | static void group_time_span_get(GQuark name, gpointer data, gpointer user_data); | |
106 | static gint map_block(LttTracefile * tf, guint block_num); | |
3c165eaf | 107 | static void ltt_update_event_size(LttTracefile *tf); |
91f8d488 | 108 | |
109 | /* Enable event debugging */ | |
110 | static int a_event_debug = 0; | |
111 | ||
112 | void ltt_event_debug(int state) | |
113 | { | |
114 | a_event_debug = state; | |
115 | } | |
116 | ||
b7576a11 | 117 | /* trace can be NULL |
118 | * | |
119 | * Return value : 0 success, 1 bad tracefile | |
120 | */ | |
64dd41a5 | 121 | static int parse_trace_header(ltt_subbuffer_header_t *header, |
122 | LttTracefile *tf, LttTrace *t) | |
b7576a11 | 123 | { |
64dd41a5 | 124 | if (header->magic_number == LTT_MAGIC_NUMBER) |
b7576a11 | 125 | tf->reverse_bo = 0; |
64dd41a5 | 126 | else if(header->magic_number == LTT_REV_MAGIC_NUMBER) |
b7576a11 | 127 | tf->reverse_bo = 1; |
128 | else /* invalid magic number, bad tracefile ! */ | |
129 | return 1; | |
64dd41a5 | 130 | |
131 | if(t) { | |
132 | t->ltt_major_version = header->major_version; | |
133 | t->ltt_minor_version = header->minor_version; | |
134 | t->arch_size = header->arch_size; | |
135 | } | |
136 | tf->alignment = header->alignment; | |
137 | ||
b7576a11 | 138 | /* Get float byte order : might be different from int byte order |
139 | * (or is set to 0 if the trace has no float (kernel trace)) */ | |
64dd41a5 | 140 | tf->float_word_order = 0; |
b7576a11 | 141 | |
64dd41a5 | 142 | switch(header->major_version) { |
b7576a11 | 143 | case 0: |
2fc874ab | 144 | case 1: |
3c165eaf | 145 | g_warning("Unsupported trace version : %hhu.%hhu", |
64dd41a5 | 146 | header->major_version, header->minor_version); |
3c165eaf | 147 | return 1; |
148 | break; | |
2fc874ab | 149 | case 2: |
64dd41a5 | 150 | switch(header->minor_version) { |
f0241068 | 151 | case 5: |
b7576a11 | 152 | { |
f0241068 | 153 | struct ltt_subbuffer_header_2_5 *vheader = header; |
1550fba6 | 154 | tf->buffer_header_size = ltt_subbuffer_header_size(); |
64dd41a5 | 155 | tf->tscbits = 27; |
156 | tf->eventbits = 5; | |
2fc874ab | 157 | tf->tsc_mask = ((1ULL << tf->tscbits) - 1); |
158 | tf->tsc_mask_next_bit = (1ULL << tf->tscbits); | |
159 | ||
e939e5b2 | 160 | if(t) { |
161 | t->start_freq = ltt_get_uint64(LTT_GET_BO(tf), | |
162 | &vheader->start_freq); | |
a3999b49 | 163 | t->freq_scale = ltt_get_uint32(LTT_GET_BO(tf), |
164 | &vheader->freq_scale); | |
e939e5b2 | 165 | t->start_tsc = ltt_get_uint64(LTT_GET_BO(tf), |
64dd41a5 | 166 | &vheader->cycle_count_begin); |
167 | t->start_monotonic = 0; | |
e939e5b2 | 168 | t->start_time.tv_sec = ltt_get_uint64(LTT_GET_BO(tf), |
169 | &vheader->start_time_sec); | |
170 | t->start_time.tv_nsec = ltt_get_uint64(LTT_GET_BO(tf), | |
171 | &vheader->start_time_usec); | |
172 | t->start_time.tv_nsec *= 1000; /* microsec to nanosec */ | |
173 | ||
9c9bf2d4 BP |
174 | t->start_time_from_tsc = |
175 | ltt_time_from_uint64(tsc_to_uint64(t->freq_scale, | |
176 | t->start_freq, t->start_tsc)); | |
e939e5b2 | 177 | } |
178 | } | |
179 | break; | |
b7576a11 | 180 | default: |
986e2a7c | 181 | g_warning("Unsupported trace version : %hhu.%hhu", |
64dd41a5 | 182 | header->major_version, header->minor_version); |
b7576a11 | 183 | return 1; |
184 | } | |
185 | break; | |
b7576a11 | 186 | default: |
187 | g_warning("Unsupported trace version : %hhu.%hhu", | |
64dd41a5 | 188 | header->major_version, header->minor_version); |
b7576a11 | 189 | return 1; |
190 | } | |
b7576a11 | 191 | return 0; |
192 | } | |
193 | ||
f0241068 MD |
194 | int get_block_offset_size(LttTracefile *tf, guint block_num, |
195 | uint64_t *offset, uint32_t *size) | |
196 | { | |
197 | uint64_t offa, offb; | |
198 | ||
199 | if (unlikely(block_num >= tf->num_blocks)) | |
200 | return -1; | |
b7576a11 | 201 | |
f0241068 MD |
202 | offa = g_array_index(tf->buf_index, uint64_t, block_num); |
203 | if (likely(block_num < tf->num_blocks - 1)) | |
204 | offb = g_array_index(tf->buf_index, uint64_t, block_num + 1); | |
205 | else | |
206 | offb = tf->file_size; | |
207 | *offset = offa; | |
208 | *size = offb - offa; | |
209 | return 0; | |
210 | } | |
211 | ||
212 | int ltt_trace_create_block_index(LttTracefile *tf) | |
213 | { | |
214 | int page_size = getpagesize(); | |
215 | uint64_t offset = 0; | |
216 | unsigned long i = 0; | |
217 | unsigned int header_map_size = PAGE_ALIGN(ltt_subbuffer_header_size()); | |
218 | ||
219 | tf->buf_index = g_array_sized_new(FALSE, TRUE, sizeof(uint64_t), | |
220 | DEFAULT_N_BLOCKS); | |
221 | ||
222 | g_assert(tf->buf_index->len == i); | |
223 | ||
224 | while (offset < tf->file_size) { | |
225 | ltt_subbuffer_header_t *header; | |
226 | uint64_t *off; | |
227 | ||
228 | tf->buf_index = g_array_set_size(tf->buf_index, i + 1); | |
229 | off = &g_array_index(tf->buf_index, uint64_t, i); | |
230 | *off = offset; | |
231 | ||
232 | /* map block header */ | |
233 | header = mmap(0, header_map_size, PROT_READ, | |
93556665 | 234 | MAP_PRIVATE, tf->fd, (off_t)offset); |
f0241068 MD |
235 | if(header == MAP_FAILED) { |
236 | perror("Error in allocating memory for buffer of tracefile"); | |
237 | return -1; | |
238 | } | |
239 | ||
240 | /* read len, offset += len */ | |
241 | offset += ltt_get_uint32(LTT_GET_BO(tf), &header->sb_size); | |
242 | ||
243 | /* unmap block header */ | |
244 | if(munmap(header, header_map_size)) { | |
245 | g_warning("unmap size : %u\n", header_map_size); | |
246 | perror("munmap error"); | |
247 | return -1; | |
248 | } | |
249 | ++i; | |
250 | } | |
251 | tf->num_blocks = i; | |
252 | ||
253 | return 0; | |
254 | } | |
b7576a11 | 255 | |
6cd62ccf | 256 | /***************************************************************************** |
257 | *Function name | |
963b5f2d | 258 | * ltt_tracefile_open : open a trace file, construct a LttTracefile |
6cd62ccf | 259 | *Input params |
963b5f2d | 260 | * t : the trace containing the tracefile |
261 | * fileName : path name of the trace file | |
3aee1200 | 262 | * tf : the tracefile structure |
6cd62ccf | 263 | *Return value |
3aee1200 | 264 | * : 0 for success, -1 otherwise. |
6cd62ccf | 265 | ****************************************************************************/ |
266 | ||
8655430b | 267 | static gint ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf) |
6cd62ccf | 268 | { |
963b5f2d | 269 | struct stat lTDFStat; /* Trace data file status */ |
64dd41a5 | 270 | ltt_subbuffer_header_t *header; |
b77d1b57 | 271 | int page_size = getpagesize(); |
6cd62ccf | 272 | |
273 | //open the file | |
d3d34f49 | 274 | tf->long_name = g_quark_from_string(fileName); |
963b5f2d | 275 | tf->trace = t; |
3865ea09 | 276 | tf->fd = open(fileName, O_RDONLY); |
f0241068 | 277 | tf->buf_index = NULL; |
6cd62ccf | 278 | if(tf->fd < 0){ |
2a74fbf4 | 279 | g_warning("Unable to open input data file %s\n", fileName); |
3aee1200 | 280 | goto end; |
6cd62ccf | 281 | } |
282 | ||
283 | // Get the file's status | |
284 | if(fstat(tf->fd, &lTDFStat) < 0){ | |
2a74fbf4 | 285 | g_warning("Unable to get the status of the input data file %s\n", fileName); |
3aee1200 | 286 | goto close_file; |
6cd62ccf | 287 | } |
288 | ||
289 | // Is the file large enough to contain a trace | |
823820eb | 290 | if(lTDFStat.st_size < |
1550fba6 | 291 | (off_t)(ltt_subbuffer_header_size())){ |
8710c6c7 | 292 | g_print("The input data file %s does not contain a trace\n", fileName); |
3aee1200 | 293 | goto close_file; |
294 | } | |
295 | ||
296 | /* Temporarily map the buffer start header to get trace information */ | |
297 | /* Multiple of pages aligned head */ | |
b77d1b57 | 298 | tf->buffer.head = mmap(0, |
1550fba6 | 299 | PAGE_ALIGN(ltt_subbuffer_header_size()), PROT_READ, |
3aee1200 | 300 | MAP_PRIVATE, tf->fd, 0); |
3865ea09 | 301 | if(tf->buffer.head == MAP_FAILED) { |
3aee1200 | 302 | perror("Error in allocating memory for buffer of tracefile"); |
303 | goto close_file; | |
6cd62ccf | 304 | } |
f64fedd7 | 305 | g_assert( ( (gulong)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
3aee1200 | 306 | |
64dd41a5 | 307 | header = (ltt_subbuffer_header_t *)tf->buffer.head; |
6cd62ccf | 308 | |
64dd41a5 | 309 | if(parse_trace_header(header, tf, NULL)) { |
51551c6f | 310 | g_warning("parse_trace_header error"); |
311 | goto unmap_file; | |
312 | } | |
3aee1200 | 313 | |
6cd62ccf | 314 | //store the size of the file |
315 | tf->file_size = lTDFStat.st_size; | |
426f6149 | 316 | tf->events_lost = 0; |
317 | tf->subbuf_corrupt = 0; | |
f628823c | 318 | |
319 | if(munmap(tf->buffer.head, | |
1550fba6 | 320 | PAGE_ALIGN(ltt_subbuffer_header_size()))) { |
43ed82b5 | 321 | g_warning("unmap size : %zu\n", |
1550fba6 | 322 | PAGE_ALIGN(ltt_subbuffer_header_size())); |
f628823c | 323 | perror("munmap error"); |
324 | g_assert(0); | |
325 | } | |
3aee1200 | 326 | tf->buffer.head = NULL; |
6cd62ccf | 327 | |
f0241068 MD |
328 | /* Create block index */ |
329 | ltt_trace_create_block_index(tf); | |
330 | ||
963b5f2d | 331 | //read the first block |
3aee1200 | 332 | if(map_block(tf,0)) { |
333 | perror("Cannot map block for tracefile"); | |
334 | goto close_file; | |
335 | } | |
336 | ||
337 | return 0; | |
6cd62ccf | 338 | |
3aee1200 | 339 | /* Error */ |
340 | unmap_file: | |
f628823c | 341 | if(munmap(tf->buffer.head, |
1550fba6 | 342 | PAGE_ALIGN(ltt_subbuffer_header_size()))) { |
43ed82b5 | 343 | g_warning("unmap size : %zu\n", |
1550fba6 | 344 | PAGE_ALIGN(ltt_subbuffer_header_size())); |
f628823c | 345 | perror("munmap error"); |
346 | g_assert(0); | |
347 | } | |
3aee1200 | 348 | close_file: |
3865ea09 | 349 | close(tf->fd); |
3aee1200 | 350 | end: |
f0241068 MD |
351 | if (tf->buf_index) |
352 | g_array_free(tf->buf_index, TRUE); | |
3aee1200 | 353 | return -1; |
6cd62ccf | 354 | } |
355 | ||
6cd62ccf | 356 | |
357 | /***************************************************************************** | |
358 | *Function name | |
963b5f2d | 359 | * ltt_tracefile_close: close a trace file, |
6cd62ccf | 360 | *Input params |
963b5f2d | 361 | * t : tracefile which will be closed |
6cd62ccf | 362 | ****************************************************************************/ |
363 | ||
8655430b | 364 | static void ltt_tracefile_close(LttTracefile *t) |
6cd62ccf | 365 | { |
f628823c | 366 | int page_size = getpagesize(); |
367 | ||
3aee1200 | 368 | if(t->buffer.head != NULL) |
f0241068 | 369 | if(munmap(t->buffer.head, PAGE_ALIGN(t->buffer.size))) { |
f628823c | 370 | g_warning("unmap size : %u\n", |
f0241068 | 371 | PAGE_ALIGN(t->buffer.size)); |
f628823c | 372 | perror("munmap error"); |
373 | g_assert(0); | |
374 | } | |
375 | ||
3865ea09 | 376 | close(t->fd); |
f0241068 MD |
377 | if (t->buf_index) |
378 | g_array_free(t->buf_index, TRUE); | |
963b5f2d | 379 | } |
6cd62ccf | 380 | |
8d1e6362 | 381 | /**************************************************************************** |
382 | * get_absolute_pathname | |
803229fa | 383 | * |
8d1e6362 | 384 | * return the unique pathname in the system |
385 | * | |
ef35d837 | 386 | * MD : Fixed this function so it uses realpath, dealing well with |
387 | * forgotten cases (.. were not used correctly before). | |
803229fa | 388 | * |
963b5f2d | 389 | ****************************************************************************/ |
45e14832 | 390 | void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname) |
9f797243 | 391 | { |
9f797243 | 392 | abs_pathname[0] = '\0'; |
803229fa | 393 | |
2fc874ab | 394 | if (realpath(pathname, abs_pathname) != NULL) |
ef35d837 | 395 | return; |
396 | else | |
397 | { | |
8d1e6362 | 398 | /* error, return the original path unmodified */ |
ef35d837 | 399 | strcpy(abs_pathname, pathname); |
9f797243 | 400 | return; |
401 | } | |
ef35d837 | 402 | return; |
9f797243 | 403 | } |
404 | ||
3aee1200 | 405 | /* Search for something like : .*_.* |
406 | * | |
407 | * The left side is the name, the right side is the number. | |
750eb11a | 408 | * Exclude leading /. |
4ad053df | 409 | * Exclude flight- prefix. |
3aee1200 | 410 | */ |
411 | ||
8655430b | 412 | static int get_tracefile_name_number(gchar *raw_name, |
3aee1200 | 413 | GQuark *name, |
ae3d0f50 | 414 | guint *num, |
f64fedd7 | 415 | gulong *tid, |
416 | gulong *pgid, | |
62e4e7bf | 417 | guint64 *creation) |
6cd62ccf | 418 | { |
3aee1200 | 419 | guint raw_name_len = strlen(raw_name); |
420 | gchar char_name[PATH_MAX]; | |
8af0138e | 421 | int i; |
3aee1200 | 422 | int underscore_pos; |
423 | long int cpu_num; | |
424 | gchar *endptr; | |
62e4e7bf | 425 | gchar *tmpptr; |
3aee1200 | 426 | |
750eb11a | 427 | /* skip leading / */ |
428 | for(i = 0; i < raw_name_len-1;i++) { | |
429 | if(raw_name[i] != '/') | |
430 | break; | |
431 | } | |
432 | raw_name = &raw_name[i]; | |
433 | raw_name_len = strlen(raw_name); | |
434 | ||
3aee1200 | 435 | for(i=raw_name_len-1;i>=0;i--) { |
436 | if(raw_name[i] == '_') break; | |
437 | } | |
ae3d0f50 | 438 | if(i==-1) { /* Either not found or name length is 0 */ |
62e4e7bf | 439 | /* This is a userspace tracefile */ |
440 | strncpy(char_name, raw_name, raw_name_len); | |
441 | char_name[raw_name_len] = '\0'; | |
442 | *name = g_quark_from_string(char_name); | |
443 | *num = 0; /* unknown cpu */ | |
444 | for(i=0;i<raw_name_len;i++) { | |
445 | if(raw_name[i] == '/') { | |
446 | break; | |
447 | } | |
448 | } | |
449 | i++; | |
450 | for(;i<raw_name_len;i++) { | |
451 | if(raw_name[i] == '/') { | |
452 | break; | |
453 | } | |
454 | } | |
455 | i++; | |
456 | for(;i<raw_name_len;i++) { | |
457 | if(raw_name[i] == '-') { | |
458 | break; | |
459 | } | |
460 | } | |
461 | if(i == raw_name_len) return -1; | |
462 | i++; | |
463 | tmpptr = &raw_name[i]; | |
464 | for(;i<raw_name_len;i++) { | |
465 | if(raw_name[i] == '.') { | |
466 | raw_name[i] = ' '; | |
467 | break; | |
468 | } | |
469 | } | |
470 | *tid = strtoul(tmpptr, &endptr, 10); | |
471 | if(endptr == tmpptr) | |
472 | return -1; /* No digit */ | |
473 | if(*tid == ULONG_MAX) | |
474 | return -1; /* underflow / overflow */ | |
475 | i++; | |
476 | tmpptr = &raw_name[i]; | |
477 | for(;i<raw_name_len;i++) { | |
478 | if(raw_name[i] == '.') { | |
479 | raw_name[i] = ' '; | |
480 | break; | |
481 | } | |
482 | } | |
483 | *pgid = strtoul(tmpptr, &endptr, 10); | |
484 | if(endptr == tmpptr) | |
485 | return -1; /* No digit */ | |
486 | if(*pgid == ULONG_MAX) | |
487 | return -1; /* underflow / overflow */ | |
488 | i++; | |
489 | tmpptr = &raw_name[i]; | |
490 | *creation = strtoull(tmpptr, &endptr, 10); | |
491 | if(endptr == tmpptr) | |
492 | return -1; /* No digit */ | |
493 | if(*creation == G_MAXUINT64) | |
494 | return -1; /* underflow / overflow */ | |
495 | } else { | |
496 | underscore_pos = i; | |
497 | ||
498 | cpu_num = strtol(raw_name+underscore_pos+1, &endptr, 10); | |
499 | ||
500 | if(endptr == raw_name+underscore_pos+1) | |
501 | return -1; /* No digit */ | |
502 | if(cpu_num == LONG_MIN || cpu_num == LONG_MAX) | |
503 | return -1; /* underflow / overflow */ | |
504 | ||
4ad053df | 505 | if (!strncmp(raw_name, "flight-", sizeof("flight-") - 1)) { |
506 | raw_name += sizeof("flight-") - 1; | |
507 | underscore_pos -= sizeof("flight-") - 1; | |
508 | } | |
62e4e7bf | 509 | strncpy(char_name, raw_name, underscore_pos); |
510 | char_name[underscore_pos] = '\0'; | |
62e4e7bf | 511 | *name = g_quark_from_string(char_name); |
512 | *num = cpu_num; | |
513 | } | |
69bd59ed | 514 | |
b333a76b | 515 | |
3aee1200 | 516 | return 0; |
517 | } | |
963b5f2d | 518 | |
3aee1200 | 519 | |
3865ea09 | 520 | GData **ltt_trace_get_tracefiles_groups(LttTrace *trace) |
77175651 | 521 | { |
3865ea09 | 522 | return &trace->tracefiles; |
77175651 | 523 | } |
524 | ||
525 | ||
3865ea09 | 526 | void compute_tracefile_group(GQuark key_id, |
527 | GArray *group, | |
528 | struct compute_tracefile_group_args *args) | |
77175651 | 529 | { |
43ed82b5 | 530 | unsigned int i; |
77175651 | 531 | LttTracefile *tf; |
532 | ||
533 | for(i=0; i<group->len; i++) { | |
534 | tf = &g_array_index (group, LttTracefile, i); | |
535 | if(tf->cpu_online) | |
3865ea09 | 536 | args->func(tf, args->func_args); |
77175651 | 537 | } |
538 | } | |
539 | ||
540 | ||
8655430b | 541 | static void ltt_tracefile_group_destroy(gpointer data) |
3aee1200 | 542 | { |
543 | GArray *group = (GArray *)data; | |
43ed82b5 | 544 | unsigned int i; |
3aee1200 | 545 | LttTracefile *tf; |
546 | ||
750eb11a | 547 | if (group->len > 0) |
548 | destroy_marker_data(g_array_index (group, LttTracefile, 0).mdata); | |
3aee1200 | 549 | for(i=0; i<group->len; i++) { |
550 | tf = &g_array_index (group, LttTracefile, i); | |
551 | if(tf->cpu_online) | |
552 | ltt_tracefile_close(tf); | |
553 | } | |
554 | g_array_free(group, TRUE); | |
6cd62ccf | 555 | } |
556 | ||
43ed82b5 | 557 | static __attribute__ ((__unused__)) gboolean ltt_tracefile_group_has_cpu_online(gpointer data) |
49bf71b5 | 558 | { |
3aee1200 | 559 | GArray *group = (GArray *)data; |
43ed82b5 | 560 | unsigned int i; |
3aee1200 | 561 | LttTracefile *tf; |
562 | ||
563 | for(i=0; i<group->len; i++) { | |
564 | tf = &g_array_index (group, LttTracefile, i); | |
3c165eaf | 565 | if(tf->cpu_online) |
566 | return 1; | |
3aee1200 | 567 | } |
568 | return 0; | |
49bf71b5 | 569 | } |
570 | ||
571 | ||
3aee1200 | 572 | /* Open each tracefile under a specific directory. Put them in a |
573 | * GData : permits to access them using their tracefile group pathname. | |
574 | * i.e. access control/modules tracefile group by index : | |
575 | * "control/module". | |
3865ea09 | 576 | * |
577 | * relative path is the path relative to the trace root | |
578 | * root path is the full path | |
3aee1200 | 579 | * |
4a55f63e | 580 | * A tracefile group is simply an array where all the per cpu tracefiles sit. |
3aee1200 | 581 | */ |
582 | ||
8655430b | 583 | static int open_tracefiles(LttTrace *trace, gchar *root_path, gchar *relative_path) |
f7afe191 | 584 | { |
62e4e7bf | 585 | DIR *dir = opendir(root_path); |
586 | struct dirent *entry; | |
587 | struct stat stat_buf; | |
750eb11a | 588 | int ret, i; |
589 | struct marker_data *mdata; | |
3865ea09 | 590 | |
62e4e7bf | 591 | gchar path[PATH_MAX]; |
592 | int path_len; | |
593 | gchar *path_ptr; | |
3aee1200 | 594 | |
3865ea09 | 595 | int rel_path_len; |
69bd59ed | 596 | gchar rel_path[PATH_MAX]; |
597 | gchar *rel_path_ptr; | |
cb03932a | 598 | LttTracefile tmp_tf; |
3865ea09 | 599 | |
62e4e7bf | 600 | if(dir == NULL) { |
601 | perror(root_path); | |
602 | return ENOENT; | |
603 | } | |
3aee1200 | 604 | |
62e4e7bf | 605 | strncpy(path, root_path, PATH_MAX-1); |
606 | path_len = strlen(path); | |
607 | path[path_len] = '/'; | |
608 | path_len++; | |
609 | path_ptr = path + path_len; | |
3aee1200 | 610 | |
3865ea09 | 611 | strncpy(rel_path, relative_path, PATH_MAX-1); |
612 | rel_path_len = strlen(rel_path); | |
613 | rel_path[rel_path_len] = '/'; | |
614 | rel_path_len++; | |
615 | rel_path_ptr = rel_path + rel_path_len; | |
616 | ||
62e4e7bf | 617 | while((entry = readdir(dir)) != NULL) { |
618 | ||
619 | if(entry->d_name[0] == '.') continue; | |
620 | ||
621 | strncpy(path_ptr, entry->d_name, PATH_MAX - path_len); | |
622 | strncpy(rel_path_ptr, entry->d_name, PATH_MAX - rel_path_len); | |
623 | ||
624 | ret = stat(path, &stat_buf); | |
625 | if(ret == -1) { | |
626 | perror(path); | |
627 | continue; | |
628 | } | |
629 | ||
630 | g_debug("Tracefile file or directory : %s\n", path); | |
631 | ||
fe452434 | 632 | // if(strcmp(rel_path, "/eventdefs") == 0) continue; |
74a588bb | 633 | |
62e4e7bf | 634 | if(S_ISDIR(stat_buf.st_mode)) { |
3aee1200 | 635 | |
62e4e7bf | 636 | g_debug("Entering subdirectory...\n"); |
637 | ret = open_tracefiles(trace, path, rel_path); | |
638 | if(ret < 0) continue; | |
639 | } else if(S_ISREG(stat_buf.st_mode)) { | |
640 | GQuark name; | |
f64fedd7 | 641 | guint num; |
642 | gulong tid, pgid; | |
62e4e7bf | 643 | guint64 creation; |
3aee1200 | 644 | GArray *group; |
f64fedd7 | 645 | num = 0; |
646 | tid = pgid = 0; | |
62e4e7bf | 647 | creation = 0; |
ae3d0f50 | 648 | if(get_tracefile_name_number(rel_path, &name, &num, &tid, &pgid, &creation)) |
3aee1200 | 649 | continue; /* invalid name */ |
3865ea09 | 650 | |
62e4e7bf | 651 | g_debug("Opening file.\n"); |
cb03932a | 652 | if(ltt_tracefile_open(trace, path, &tmp_tf)) { |
653 | g_info("Error opening tracefile %s", path); | |
654 | ||
655 | continue; /* error opening the tracefile : bad magic number ? */ | |
656 | } | |
657 | ||
3865ea09 | 658 | g_debug("Tracefile name is %s and number is %u", |
659 | g_quark_to_string(name), num); | |
750eb11a | 660 | |
661 | mdata = NULL; | |
cb03932a | 662 | tmp_tf.cpu_online = 1; |
663 | tmp_tf.cpu_num = num; | |
d3d34f49 | 664 | tmp_tf.name = name; |
62e4e7bf | 665 | tmp_tf.tid = tid; |
666 | tmp_tf.pgid = pgid; | |
667 | tmp_tf.creation = creation; | |
3865ea09 | 668 | group = g_datalist_id_get_data(&trace->tracefiles, name); |
3aee1200 | 669 | if(group == NULL) { |
670 | /* Elements are automatically cleared when the array is allocated. | |
671 | * It makes the cpu_online variable set to 0 : cpu offline, by default. | |
672 | */ | |
673 | group = g_array_sized_new (FALSE, TRUE, sizeof(LttTracefile), 10); | |
3865ea09 | 674 | g_datalist_id_set_data_full(&trace->tracefiles, name, |
3aee1200 | 675 | group, ltt_tracefile_group_destroy); |
750eb11a | 676 | mdata = allocate_marker_data(); |
677 | if (!mdata) | |
678 | g_error("Error in allocating marker data"); | |
3aee1200 | 679 | } |
cb03932a | 680 | |
3aee1200 | 681 | /* Add the per cpu tracefile to the named group */ |
682 | unsigned int old_len = group->len; | |
683 | if(num+1 > old_len) | |
684 | group = g_array_set_size(group, num+1); | |
750eb11a | 685 | |
686 | g_assert(group->len > 0); | |
687 | if (!mdata) | |
688 | mdata = g_array_index (group, LttTracefile, 0).mdata; | |
689 | ||
cb03932a | 690 | g_array_index (group, LttTracefile, num) = tmp_tf; |
afd57a3c | 691 | g_array_index (group, LttTracefile, num).event.tracefile = |
692 | &g_array_index (group, LttTracefile, num); | |
750eb11a | 693 | for (i = 0; i < group->len; i++) |
694 | g_array_index (group, LttTracefile, i).mdata = mdata; | |
62e4e7bf | 695 | } |
696 | } | |
697 | ||
698 | closedir(dir); | |
3aee1200 | 699 | |
62e4e7bf | 700 | return 0; |
f7afe191 | 701 | } |
702 | ||
3aee1200 | 703 | |
704 | /* Presumes the tracefile is already seeked at the beginning. It makes sense, | |
705 | * because it must be done just after the opening */ | |
2fc874ab | 706 | static int ltt_process_metadata_tracefile(LttTracefile *tf) |
3aee1200 | 707 | { |
708 | int err; | |
3aee1200 | 709 | |
710 | while(1) { | |
711 | err = ltt_tracefile_read_seek(tf); | |
712 | if(err == EPERM) goto seek_error; | |
713 | else if(err == ERANGE) break; /* End of tracefile */ | |
714 | ||
715 | err = ltt_tracefile_read_update_event(tf); | |
716 | if(err) goto update_error; | |
717 | ||
3aee1200 | 718 | /* The rules are : |
2fc874ab | 719 | * It contains only core events : |
720 | * 0 : set_marker_id | |
721 | * 1 : set_marker_format | |
3aee1200 | 722 | */ |
3c165eaf | 723 | if(tf->event.event_id >= MARKER_CORE_IDS) { |
2fc874ab | 724 | /* Should only contain core events */ |
725 | g_warning("Error in processing metadata file %s, " | |
3c165eaf | 726 | "should not contain event id %u.", g_quark_to_string(tf->name), |
727 | tf->event.event_id); | |
3aee1200 | 728 | err = EPERM; |
3c165eaf | 729 | goto event_id_error; |
d2083cab | 730 | } else { |
2e13d6af | 731 | char *pos; |
750eb11a | 732 | const char *channel_name, *marker_name, *format; |
3c165eaf | 733 | uint16_t id; |
734 | guint8 int_size, long_size, pointer_size, size_t_size, alignment; | |
3aee1200 | 735 | |
3c165eaf | 736 | switch((enum marker_id)tf->event.event_id) { |
737 | case MARKER_ID_SET_MARKER_ID: | |
750eb11a | 738 | channel_name = pos = tf->event.data; |
739 | pos += strlen(channel_name) + 1; | |
740 | marker_name = pos; | |
741 | g_debug("Doing MARKER_ID_SET_MARKER_ID of marker %s.%s", | |
742 | channel_name, marker_name); | |
2e13d6af | 743 | pos += strlen(marker_name) + 1; |
2fc874ab | 744 | pos += ltt_align((size_t)pos, sizeof(guint16), tf->alignment); |
3c165eaf | 745 | id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
750eb11a | 746 | g_debug("In MARKER_ID_SET_MARKER_ID of marker %s.%s id %hu", |
747 | channel_name, marker_name, id); | |
3c165eaf | 748 | pos += sizeof(guint16); |
749 | int_size = *(guint8*)pos; | |
750 | pos += sizeof(guint8); | |
751 | long_size = *(guint8*)pos; | |
752 | pos += sizeof(guint8); | |
753 | pointer_size = *(guint8*)pos; | |
754 | pos += sizeof(guint8); | |
755 | size_t_size = *(guint8*)pos; | |
756 | pos += sizeof(guint8); | |
757 | alignment = *(guint8*)pos; | |
758 | pos += sizeof(guint8); | |
750eb11a | 759 | marker_id_event(tf->trace, |
760 | g_quark_from_string(channel_name), | |
761 | g_quark_from_string(marker_name), | |
3c165eaf | 762 | id, int_size, long_size, |
763 | pointer_size, size_t_size, alignment); | |
3aee1200 | 764 | break; |
3c165eaf | 765 | case MARKER_ID_SET_MARKER_FORMAT: |
750eb11a | 766 | channel_name = pos = tf->event.data; |
767 | pos += strlen(channel_name) + 1; | |
768 | marker_name = pos; | |
769 | g_debug("Doing MARKER_ID_SET_MARKER_FORMAT of marker %s.%s", | |
770 | channel_name, marker_name); | |
2e13d6af | 771 | pos += strlen(marker_name) + 1; |
2e13d6af | 772 | format = pos; |
3c165eaf | 773 | pos += strlen(format) + 1; |
750eb11a | 774 | marker_format_event(tf->trace, |
775 | g_quark_from_string(channel_name), | |
776 | g_quark_from_string(marker_name), | |
3c165eaf | 777 | format); |
2fc874ab | 778 | /* get information from dictionary TODO */ |
d1bb700c | 779 | break; |
3aee1200 | 780 | default: |
2fc874ab | 781 | g_warning("Error in processing metadata file %s, " |
3c165eaf | 782 | "unknown event id %hhu.", |
3aee1200 | 783 | g_quark_to_string(tf->name), |
784 | tf->event.event_id); | |
785 | err = EPERM; | |
786 | goto event_id_error; | |
787 | } | |
788 | } | |
963b5f2d | 789 | } |
3aee1200 | 790 | return 0; |
963b5f2d | 791 | |
3aee1200 | 792 | /* Error handling */ |
3aee1200 | 793 | event_id_error: |
3aee1200 | 794 | update_error: |
795 | seek_error: | |
2fc874ab | 796 | g_warning("An error occured in metadata tracefile parsing"); |
3aee1200 | 797 | return err; |
6cd62ccf | 798 | } |
799 | ||
e95fe8f7 | 800 | /* |
801 | * Open a trace and return its LttTrace handle. | |
802 | * | |
803 | * pathname must be the directory of the trace | |
804 | */ | |
963b5f2d | 805 | |
3aee1200 | 806 | LttTrace *ltt_trace_open(const gchar *pathname) |
807 | { | |
808 | gchar abs_path[PATH_MAX]; | |
809 | LttTrace * t; | |
810 | LttTracefile *tf; | |
811 | GArray *group; | |
43ed82b5 | 812 | unsigned int i; |
813 | int ret; | |
64dd41a5 | 814 | ltt_subbuffer_header_t *header; |
62e4e7bf | 815 | DIR *dir; |
816 | struct dirent *entry; | |
62e4e7bf | 817 | struct stat stat_buf; |
b56dcdf2 | 818 | gchar path[PATH_MAX]; |
3aee1200 | 819 | |
820 | t = g_new(LttTrace, 1); | |
821 | if(!t) goto alloc_error; | |
822 | ||
823 | get_absolute_pathname(pathname, abs_path); | |
824 | t->pathname = g_quark_from_string(abs_path); | |
825 | ||
3aee1200 | 826 | g_datalist_init(&t->tracefiles); |
b56dcdf2 | 827 | |
828 | /* Test to see if it looks like a trace */ | |
62e4e7bf | 829 | dir = opendir(abs_path); |
830 | if(dir == NULL) { | |
831 | perror(abs_path); | |
832 | goto open_error; | |
833 | } | |
834 | while((entry = readdir(dir)) != NULL) { | |
b56dcdf2 | 835 | strcpy(path, abs_path); |
836 | strcat(path, "/"); | |
837 | strcat(path, entry->d_name); | |
62e4e7bf | 838 | ret = stat(path, &stat_buf); |
839 | if(ret == -1) { | |
840 | perror(path); | |
841 | continue; | |
842 | } | |
b56dcdf2 | 843 | } |
844 | closedir(dir); | |
845 | ||
b56dcdf2 | 846 | /* Open all the tracefiles */ |
22660d97 | 847 | t->start_freq= 0; |
e45551ac | 848 | if(open_tracefiles(t, abs_path, "")) { |
849 | g_warning("Error opening tracefile %s", abs_path); | |
b56dcdf2 | 850 | goto find_error; |
e45551ac | 851 | } |
3aee1200 | 852 | |
750eb11a | 853 | /* Parse each trace metadata_N files : get runtime fac. info */ |
2fc874ab | 854 | group = g_datalist_id_get_data(&t->tracefiles, LTT_TRACEFILE_NAME_METADATA); |
3aee1200 | 855 | if(group == NULL) { |
8af0138e | 856 | g_warning("Trace %s has no metadata tracefile", abs_path); |
750eb11a | 857 | goto find_error; |
3aee1200 | 858 | } |
859 | ||
e0c7c400 | 860 | /* |
750eb11a | 861 | * Get the trace information for the metadata_0 tracefile. |
e0c7c400 | 862 | * Getting a correct trace start_time and start_tsc is insured by the fact |
863 | * that no subbuffers are supposed to be lost in the metadata channel. | |
864 | * Therefore, the first subbuffer contains the start_tsc timestamp in its | |
865 | * buffer header. | |
866 | */ | |
16fcbb80 | 867 | g_assert(group->len > 0); |
868 | tf = &g_array_index (group, LttTracefile, 0); | |
64dd41a5 | 869 | header = (ltt_subbuffer_header_t *)tf->buffer.head; |
ac3b1c7d | 870 | ret = parse_trace_header(header, tf, t); |
871 | g_assert(!ret); | |
b56dcdf2 | 872 | |
873 | t->num_cpu = group->len; | |
9c9bf2d4 BP |
874 | t->drift = 1.; |
875 | t->offset = 0.; | |
16fcbb80 | 876 | |
750eb11a | 877 | //ret = allocate_marker_data(t); |
878 | //if (ret) | |
879 | // g_error("Error in allocating marker data"); | |
d79909d1 | 880 | |
3aee1200 | 881 | for(i=0; i<group->len; i++) { |
882 | tf = &g_array_index (group, LttTracefile, i); | |
e85b0b1b | 883 | if (tf->cpu_online) |
2fc874ab | 884 | if(ltt_process_metadata_tracefile(tf)) |
750eb11a | 885 | goto find_error; |
886 | // goto metadata_error; | |
3aee1200 | 887 | } |
dd3a6d39 | 888 | |
3aee1200 | 889 | return t; |
890 | ||
891 | /* Error handling */ | |
750eb11a | 892 | //metadata_error: |
893 | // destroy_marker_data(t); | |
b56dcdf2 | 894 | find_error: |
3aee1200 | 895 | g_datalist_clear(&t->tracefiles); |
b56dcdf2 | 896 | open_error: |
3aee1200 | 897 | g_free(t); |
898 | alloc_error: | |
899 | return NULL; | |
900 | ||
901 | } | |
6cd62ccf | 902 | |
e95fe8f7 | 903 | /* Open another, completely independant, instance of a trace. |
904 | * | |
905 | * A read on this new instance will read the first event of the trace. | |
906 | * | |
3aee1200 | 907 | * When we copy a trace, we want all the opening actions to happen again : |
908 | * the trace will be reopened and totally independant from the original. | |
909 | * That's why we call ltt_trace_open. | |
e95fe8f7 | 910 | */ |
3aee1200 | 911 | LttTrace *ltt_trace_copy(LttTrace *self) |
963b5f2d | 912 | { |
3aee1200 | 913 | return ltt_trace_open(g_quark_to_string(self->pathname)); |
963b5f2d | 914 | } |
915 | ||
e95fe8f7 | 916 | /* |
917 | * Close a trace | |
918 | */ | |
919 | ||
3aee1200 | 920 | void ltt_trace_close(LttTrace *t) |
6cd62ccf | 921 | { |
3aee1200 | 922 | g_datalist_clear(&t->tracefiles); |
923 | g_free(t); | |
6cd62ccf | 924 | } |
925 | ||
3aee1200 | 926 | |
6cd62ccf | 927 | /***************************************************************************** |
3aee1200 | 928 | * Get the start time and end time of the trace |
6cd62ccf | 929 | ****************************************************************************/ |
930 | ||
3c165eaf | 931 | void ltt_tracefile_time_span_get(LttTracefile *tf, |
3aee1200 | 932 | LttTime *start, LttTime *end) |
6cd62ccf | 933 | { |
3aee1200 | 934 | int err; |
6cd62ccf | 935 | |
3aee1200 | 936 | err = map_block(tf, 0); |
937 | if(unlikely(err)) { | |
938 | g_error("Can not map block"); | |
939 | *start = ltt_time_infinite; | |
940 | } else | |
941 | *start = tf->buffer.begin.timestamp; | |
942 | ||
943 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ | |
944 | if(unlikely(err)) { | |
945 | g_error("Can not map block"); | |
946 | *end = ltt_time_zero; | |
947 | } else | |
948 | *end = tf->buffer.end.timestamp; | |
3729b611 PMF |
949 | |
950 | g_assert(end->tv_sec <= G_MAXUINT); | |
6cd62ccf | 951 | } |
952 | ||
3aee1200 | 953 | struct tracefile_time_span_get_args { |
954 | LttTrace *t; | |
955 | LttTime *start; | |
956 | LttTime *end; | |
957 | }; | |
963b5f2d | 958 | |
8655430b | 959 | static void group_time_span_get(GQuark name, gpointer data, gpointer user_data) |
963b5f2d | 960 | { |
3aee1200 | 961 | struct tracefile_time_span_get_args *args = |
962 | (struct tracefile_time_span_get_args*)user_data; | |
963 | ||
964 | GArray *group = (GArray *)data; | |
43ed82b5 | 965 | unsigned int i; |
3aee1200 | 966 | LttTracefile *tf; |
967 | LttTime tmp_start; | |
968 | LttTime tmp_end; | |
969 | ||
970 | for(i=0; i<group->len; i++) { | |
971 | tf = &g_array_index (group, LttTracefile, i); | |
972 | if(tf->cpu_online) { | |
973 | ltt_tracefile_time_span_get(tf, &tmp_start, &tmp_end); | |
974 | if(ltt_time_compare(*args->start, tmp_start)>0) *args->start = tmp_start; | |
975 | if(ltt_time_compare(*args->end, tmp_end)<0) *args->end = tmp_end; | |
976 | } | |
977 | } | |
6cd62ccf | 978 | } |
979 | ||
8655430b | 980 | /* return the start and end time of a trace */ |
981 | ||
487ad181 | 982 | void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end) |
983 | { | |
3aee1200 | 984 | LttTime min_start = ltt_time_infinite; |
985 | LttTime max_end = ltt_time_zero; | |
986 | struct tracefile_time_span_get_args args = { t, &min_start, &max_end }; | |
487ad181 | 987 | |
3aee1200 | 988 | g_datalist_foreach(&t->tracefiles, &group_time_span_get, &args); |
989 | ||
990 | if(start != NULL) *start = min_start; | |
991 | if(end != NULL) *end = max_end; | |
992 | ||
487ad181 | 993 | } |
994 | ||
995 | ||
3aee1200 | 996 | /* Seek to the first event in a tracefile that has a time equal or greater than |
997 | * the time passed in parameter. | |
998 | * | |
999 | * If the time parameter is outside the tracefile time span, seek to the first | |
27304273 | 1000 | * event or if after, return ERANGE. |
3aee1200 | 1001 | * |
1002 | * If the time parameter is before the first event, we have to seek specially to | |
1003 | * there. | |
1004 | * | |
27304273 | 1005 | * If the time is after the end of the trace, return ERANGE. |
3aee1200 | 1006 | * |
1007 | * Do a binary search to find the right block, then a sequential search in the | |
1008 | * block to find the event. | |
1009 | * | |
1010 | * In the special case where the time requested fits inside a block that has no | |
1011 | * event corresponding to the requested time, the first event of the next block | |
1012 | * will be seeked. | |
1013 | * | |
1014 | * IMPORTANT NOTE : // FIXME everywhere... | |
1015 | * | |
1016 | * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time : | |
1017 | * you will jump over an event if you do. | |
1018 | * | |
1019 | * Return value : 0 : no error, the tf->event can be used | |
27304273 | 1020 | * ERANGE : time if after the last event of the trace |
3aee1200 | 1021 | * otherwise : this is an error. |
1022 | * | |
1023 | * */ | |
1024 | ||
1025 | int ltt_tracefile_seek_time(LttTracefile *tf, LttTime time) | |
1026 | { | |
1027 | int ret = 0; | |
1028 | int err; | |
1029 | unsigned int block_num, high, low; | |
1030 | ||
1031 | /* seek at the beginning of trace */ | |
1032 | err = map_block(tf, 0); /* First block */ | |
1033 | if(unlikely(err)) { | |
1034 | g_error("Can not map block"); | |
1035 | goto fail; | |
caf7a67a | 1036 | } |
1037 | ||
3aee1200 | 1038 | /* If the time is lower or equal the beginning of the trace, |
1039 | * go to the first event. */ | |
1040 | if(ltt_time_compare(time, tf->buffer.begin.timestamp) <= 0) { | |
1041 | ret = ltt_tracefile_read(tf); | |
27304273 | 1042 | if(ret == ERANGE) goto range; |
1043 | else if (ret) goto fail; | |
3aee1200 | 1044 | goto found; /* There is either no event in the trace or the event points |
1045 | to the first event in the trace */ | |
1046 | } | |
caf7a67a | 1047 | |
3aee1200 | 1048 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
1049 | if(unlikely(err)) { | |
1050 | g_error("Can not map block"); | |
1051 | goto fail; | |
caf7a67a | 1052 | } |
6cd62ccf | 1053 | |
27304273 | 1054 | /* If the time is after the end of the trace, return ERANGE. */ |
1055 | if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { | |
1056 | goto range; | |
3aee1200 | 1057 | } |
62e55dd6 | 1058 | |
3aee1200 | 1059 | /* Binary search the block */ |
1060 | high = tf->num_blocks - 1; | |
1061 | low = 0; | |
1062 | ||
1063 | while(1) { | |
1064 | block_num = ((high-low) / 2) + low; | |
1065 | ||
1066 | err = map_block(tf, block_num); | |
1067 | if(unlikely(err)) { | |
1068 | g_error("Can not map block"); | |
1069 | goto fail; | |
db55eaae | 1070 | } |
3aee1200 | 1071 | if(high == low) { |
1072 | /* We cannot divide anymore : this is what would happen if the time | |
1073 | * requested was exactly between two consecutive buffers'end and start | |
1074 | * timestamps. This is also what would happend if we didn't deal with out | |
1075 | * of span cases prior in this function. */ | |
1076 | /* The event is right in the buffer! | |
1077 | * (or in the next buffer first event) */ | |
1078 | while(1) { | |
1079 | ret = ltt_tracefile_read(tf); | |
27304273 | 1080 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ |
3aee1200 | 1081 | else if(ret) goto fail; |
1082 | ||
d9e13a0f | 1083 | if(ltt_time_compare(time, tf->event.event_time) <= 0) |
e45551ac | 1084 | goto found; |
3aee1200 | 1085 | } |
1086 | ||
27304273 | 1087 | } else if(ltt_time_compare(time, tf->buffer.begin.timestamp) < 0) { |
3aee1200 | 1088 | /* go to lower part */ |
b1369bef | 1089 | high = block_num - 1; |
3aee1200 | 1090 | } else if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
1091 | /* go to higher part */ | |
b1369bef | 1092 | low = block_num + 1; |
3aee1200 | 1093 | } else {/* The event is right in the buffer! |
1094 | (or in the next buffer first event) */ | |
1095 | while(1) { | |
27304273 | 1096 | ret = ltt_tracefile_read(tf); |
1097 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ | |
3aee1200 | 1098 | else if(ret) goto fail; |
1099 | ||
d9e13a0f | 1100 | if(ltt_time_compare(time, tf->event.event_time) <= 0) |
3aee1200 | 1101 | break; |
6cd62ccf | 1102 | } |
3aee1200 | 1103 | goto found; |
6cd62ccf | 1104 | } |
6cd62ccf | 1105 | } |
3aee1200 | 1106 | |
1107 | found: | |
1108 | return 0; | |
27304273 | 1109 | range: |
1110 | return ERANGE; | |
3aee1200 | 1111 | |
1112 | /* Error handling */ | |
1113 | fail: | |
1114 | g_error("ltt_tracefile_seek_time failed on tracefile %s", | |
1115 | g_quark_to_string(tf->name)); | |
1116 | return EPERM; | |
6cd62ccf | 1117 | } |
1118 | ||
e95fe8f7 | 1119 | /* Seek to a position indicated by an LttEventPosition |
1120 | */ | |
80da81ad | 1121 | |
8655430b | 1122 | int ltt_tracefile_seek_position(LttTracefile *tf, const LttEventPosition *ep) |
1123 | { | |
3aee1200 | 1124 | int err; |
1125 | ||
1126 | if(ep->tracefile != tf) { | |
1127 | goto fail; | |
80da81ad | 1128 | } |
1129 | ||
3aee1200 | 1130 | err = map_block(tf, ep->block); |
1131 | if(unlikely(err)) { | |
1132 | g_error("Can not map block"); | |
1133 | goto fail; | |
1134 | } | |
1135 | ||
1136 | tf->event.offset = ep->offset; | |
18206708 | 1137 | |
62e4e7bf | 1138 | /* Put back the event real tsc */ |
1139 | tf->event.tsc = ep->tsc; | |
1140 | tf->buffer.tsc = ep->tsc; | |
78f79181 | 1141 | |
3aee1200 | 1142 | err = ltt_tracefile_read_update_event(tf); |
1143 | if(err) goto fail; | |
73faf25a | 1144 | |
1145 | /* deactivate this, as it does nothing for now | |
3aee1200 | 1146 | err = ltt_tracefile_read_op(tf); |
1147 | if(err) goto fail; | |
73faf25a | 1148 | */ |
80da81ad | 1149 | |
a0c1f622 | 1150 | return 0; |
3aee1200 | 1151 | |
1152 | fail: | |
1153 | g_error("ltt_tracefile_seek_time failed on tracefile %s", | |
1154 | g_quark_to_string(tf->name)); | |
a0c1f622 | 1155 | return 1; |
3aee1200 | 1156 | } |
1157 | ||
9c9bf2d4 BP |
1158 | /* |
1159 | * Convert a value in "TSC scale" to a value in nanoseconds | |
1160 | */ | |
1161 | guint64 tsc_to_uint64(guint32 freq_scale, uint64_t start_freq, guint64 tsc) | |
1162 | { | |
1163 | return (double) tsc * NANOSECONDS_PER_SECOND * freq_scale / start_freq; | |
1164 | } | |
1165 | ||
e95fe8f7 | 1166 | /* Given a TSC value, return the LttTime (seconds,nanoseconds) it |
1167 | * corresponds to. | |
1168 | */ | |
ae3d0f50 | 1169 | LttTime ltt_interpolate_time_from_tsc(LttTracefile *tf, guint64 tsc) |
3aee1200 | 1170 | { |
9c9bf2d4 BP |
1171 | return ltt_time_from_uint64(tsc_to_uint64(tf->trace->freq_scale, |
1172 | tf->trace->start_freq, tf->trace->drift * tsc + | |
1173 | tf->trace->offset)); | |
80da81ad | 1174 | } |
1175 | ||
ae3d0f50 | 1176 | /* Calculate the real event time based on the buffer boundaries */ |
1177 | LttTime ltt_interpolate_time(LttTracefile *tf, LttEvent *event) | |
1178 | { | |
62e4e7bf | 1179 | return ltt_interpolate_time_from_tsc(tf, tf->buffer.tsc); |
ae3d0f50 | 1180 | } |
1181 | ||
eed2ef37 | 1182 | |
1183 | /* Get the current event of the tracefile : valid until the next read */ | |
1184 | LttEvent *ltt_tracefile_get_event(LttTracefile *tf) | |
1185 | { | |
1186 | return &tf->event; | |
1187 | } | |
1188 | ||
1189 | ||
1190 | ||
6cd62ccf | 1191 | /***************************************************************************** |
1192 | *Function name | |
3aee1200 | 1193 | * ltt_tracefile_read : Read the next event in the tracefile |
6cd62ccf | 1194 | *Input params |
1195 | * t : tracefile | |
1196 | *Return value | |
3aee1200 | 1197 | * |
1198 | * Returns 0 if an event can be used in tf->event. | |
d822520b | 1199 | * Returns ERANGE on end of trace. The event in tf->event still can be used |
1200 | * (if the last block was not empty). | |
3aee1200 | 1201 | * Returns EPERM on error. |
1202 | * | |
1203 | * This function does make the tracefile event structure point to the event | |
1204 | * currently pointed to by the tf->event. | |
1205 | * | |
1206 | * Note : you must call a ltt_tracefile_seek to the beginning of the trace to | |
1207 | * reinitialize it after an error if you want results to be coherent. | |
1208 | * It would be the case if a end of trace last buffer has no event : the end | |
1209 | * of trace wouldn't be returned, but an error. | |
1210 | * We make the assumption there is at least one event per buffer. | |
6cd62ccf | 1211 | ****************************************************************************/ |
1212 | ||
3aee1200 | 1213 | int ltt_tracefile_read(LttTracefile *tf) |
6cd62ccf | 1214 | { |
963b5f2d | 1215 | int err; |
6cd62ccf | 1216 | |
3aee1200 | 1217 | err = ltt_tracefile_read_seek(tf); |
1218 | if(err) return err; | |
1219 | err = ltt_tracefile_read_update_event(tf); | |
1220 | if(err) return err; | |
73faf25a | 1221 | |
1222 | /* deactivate this, as it does nothing for now | |
3aee1200 | 1223 | err = ltt_tracefile_read_op(tf); |
1224 | if(err) return err; | |
73faf25a | 1225 | */ |
3aee1200 | 1226 | |
1227 | return 0; | |
1228 | } | |
1229 | ||
1230 | int ltt_tracefile_read_seek(LttTracefile *tf) | |
1231 | { | |
1232 | int err; | |
1233 | ||
1234 | /* Get next buffer until we finally have an event, or end of trace */ | |
1235 | while(1) { | |
1236 | err = ltt_seek_next_event(tf); | |
1237 | if(unlikely(err == ENOPROTOOPT)) { | |
1238 | return EPERM; | |
bdc36259 | 1239 | } |
bdc36259 | 1240 | |
3aee1200 | 1241 | /* Are we at the end of the buffer ? */ |
1242 | if(err == ERANGE) { | |
1243 | if(unlikely(tf->buffer.index == tf->num_blocks-1)){ /* end of trace ? */ | |
1244 | return ERANGE; | |
1245 | } else { | |
1246 | /* get next block */ | |
1247 | err = map_block(tf, tf->buffer.index + 1); | |
1248 | if(unlikely(err)) { | |
1249 | g_error("Can not map block"); | |
1250 | return EPERM; | |
1251 | } | |
1252 | } | |
1253 | } else break; /* We found an event ! */ | |
1254 | } | |
2dee981d | 1255 | |
3aee1200 | 1256 | return 0; |
1257 | } | |
18206708 | 1258 | |
e95fe8f7 | 1259 | /* do an operation when reading a new event */ |
18206708 | 1260 | |
73faf25a | 1261 | /* This function does nothing for now */ |
1262 | #if 0 | |
3aee1200 | 1263 | int ltt_tracefile_read_op(LttTracefile *tf) |
1264 | { | |
3aee1200 | 1265 | LttEvent *event; |
1266 | ||
1267 | event = &tf->event; | |
18206708 | 1268 | |
73faf25a | 1269 | /* do event specific operation */ |
1270 | ||
1271 | /* nothing */ | |
40331ba8 | 1272 | |
3aee1200 | 1273 | return 0; |
6cd62ccf | 1274 | } |
73faf25a | 1275 | #endif |
6cd62ccf | 1276 | |
91f8d488 | 1277 | static void print_debug_event_header(LttEvent *ev, void *start_pos, void *end_pos) |
1278 | { | |
1279 | unsigned int offset = 0; | |
1280 | int i, j; | |
1281 | ||
43ed82b5 | 1282 | g_printf("Event header (tracefile %s offset %" PRIx64 "):\n", |
afd57a3c | 1283 | g_quark_to_string(ev->tracefile->long_name), |
f0241068 MD |
1284 | (uint64_t)ev->tracefile->buffer.offset + |
1285 | (long)start_pos - (long)ev->tracefile->buffer.head); | |
91f8d488 | 1286 | |
1287 | while (offset < (long)end_pos - (long)start_pos) { | |
1288 | g_printf("%8lx", (long)start_pos - (long)ev->tracefile->buffer.head + offset); | |
1289 | g_printf(" "); | |
1290 | ||
1291 | for (i = 0; i < 4 ; i++) { | |
1292 | for (j = 0; j < 4; j++) { | |
1293 | if (offset + ((i * 4) + j) < | |
1294 | (long)end_pos - (long)start_pos) | |
1295 | g_printf("%02hhX", | |
d3353231 | 1296 | ((char*)start_pos)[offset + ((i * 4) + j)]); |
91f8d488 | 1297 | else |
1298 | g_printf(" "); | |
1299 | g_printf(" "); | |
1300 | } | |
1301 | if (i < 4) | |
1302 | g_printf(" "); | |
1303 | } | |
1304 | offset+=16; | |
1305 | g_printf("\n"); | |
1306 | } | |
1307 | } | |
1308 | ||
6cd62ccf | 1309 | |
3aee1200 | 1310 | /* same as ltt_tracefile_read, but does not seek to the next event nor call |
1311 | * event specific operation. */ | |
1312 | int ltt_tracefile_read_update_event(LttTracefile *tf) | |
6cd62ccf | 1313 | { |
3aee1200 | 1314 | void * pos; |
1315 | LttEvent *event; | |
91f8d488 | 1316 | void *pos_aligned; |
551bf485 | 1317 | guint16 packed_evid; /* event id reader from the 5 bits in header */ |
3aee1200 | 1318 | |
1319 | event = &tf->event; | |
eed2ef37 | 1320 | pos = tf->buffer.head + event->offset; |
3aee1200 | 1321 | |
1322 | /* Read event header */ | |
1323 | ||
62e4e7bf | 1324 | /* Align the head */ |
2fc874ab | 1325 | pos += ltt_align((size_t)pos, sizeof(guint32), tf->alignment); |
91f8d488 | 1326 | pos_aligned = pos; |
3aee1200 | 1327 | |
2fc874ab | 1328 | event->timestamp = ltt_get_uint32(LTT_GET_BO(tf), pos); |
551bf485 | 1329 | event->event_id = packed_evid = event->timestamp >> tf->tscbits; |
a9048165 | 1330 | event->timestamp = event->timestamp & tf->tsc_mask; |
2fc874ab | 1331 | pos += sizeof(guint32); |
1332 | ||
551bf485 | 1333 | switch (packed_evid) { |
2fc874ab | 1334 | case 29: /* LTT_RFLAG_ID_SIZE_TSC */ |
1335 | event->event_id = ltt_get_uint16(LTT_GET_BO(tf), pos); | |
1336 | pos += sizeof(guint16); | |
1337 | event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos); | |
1338 | pos += sizeof(guint16); | |
1339 | if (event->event_size == 0xFFFF) { | |
1340 | event->event_size = ltt_get_uint32(LTT_GET_BO(tf), pos); | |
1341 | pos += sizeof(guint32); | |
d1bb700c | 1342 | } |
2fc874ab | 1343 | pos += ltt_align((size_t)pos, sizeof(guint64), tf->alignment); |
1344 | tf->buffer.tsc = ltt_get_uint64(LTT_GET_BO(tf), pos); | |
62e4e7bf | 1345 | pos += sizeof(guint64); |
2fc874ab | 1346 | break; |
1347 | case 30: /* LTT_RFLAG_ID_SIZE */ | |
f439de06 | 1348 | event->event_id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
3c165eaf | 1349 | pos += sizeof(guint16); |
d1bb700c | 1350 | event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos); |
1351 | pos += sizeof(guint16); | |
2fc874ab | 1352 | if (event->event_size == 0xFFFF) { |
1353 | event->event_size = ltt_get_uint32(LTT_GET_BO(tf), pos); | |
1354 | pos += sizeof(guint32); | |
1355 | } | |
1356 | break; | |
1357 | case 31: /* LTT_RFLAG_ID */ | |
1358 | event->event_id = ltt_get_uint16(LTT_GET_BO(tf), pos); | |
1359 | pos += sizeof(guint16); | |
1360 | event->event_size = G_MAXUINT; | |
1361 | break; | |
1362 | default: | |
1363 | event->event_size = G_MAXUINT; | |
1364 | break; | |
1365 | } | |
1366 | ||
551bf485 | 1367 | if (likely(packed_evid != 29)) { |
2fc874ab | 1368 | /* No extended timestamp */ |
1369 | if (event->timestamp < (tf->buffer.tsc & tf->tsc_mask)) | |
1370 | tf->buffer.tsc = ((tf->buffer.tsc & ~tf->tsc_mask) /* overflow */ | |
1371 | + tf->tsc_mask_next_bit) | |
1372 | | (guint64)event->timestamp; | |
1373 | else | |
1374 | tf->buffer.tsc = (tf->buffer.tsc & ~tf->tsc_mask) /* no overflow */ | |
1375 | | (guint64)event->timestamp; | |
d1bb700c | 1376 | } |
2fc874ab | 1377 | event->tsc = tf->buffer.tsc; |
1378 | ||
1379 | event->event_time = ltt_interpolate_time(tf, event); | |
91f8d488 | 1380 | |
1381 | if (a_event_debug) | |
1382 | print_debug_event_header(event, pos_aligned, pos); | |
1383 | ||
3aee1200 | 1384 | event->data = pos; |
1385 | ||
2fc874ab | 1386 | /* |
1387 | * Let ltt_update_event_size update event->data according to the largest | |
1388 | * alignment within the payload. | |
1389 | * Get the data size and update the event fields with the current | |
1390 | * information. */ | |
eed2ef37 | 1391 | ltt_update_event_size(tf); |
77175651 | 1392 | |
3aee1200 | 1393 | return 0; |
6cd62ccf | 1394 | } |
1395 | ||
507915ee | 1396 | |
6cd62ccf | 1397 | /**************************************************************************** |
1398 | *Function name | |
3aee1200 | 1399 | * map_block : map a block from the file |
6cd62ccf | 1400 | *Input Params |
1401 | * lttdes : ltt trace file | |
1402 | * whichBlock : the block which will be read | |
1403 | *return value | |
1404 | * 0 : success | |
1405 | * EINVAL : lseek fail | |
1406 | * EIO : can not read from the file | |
1407 | ****************************************************************************/ | |
1408 | ||
8655430b | 1409 | static gint map_block(LttTracefile * tf, guint block_num) |
6cd62ccf | 1410 | { |
b77d1b57 | 1411 | int page_size = getpagesize(); |
64dd41a5 | 1412 | ltt_subbuffer_header_t *header; |
f0241068 MD |
1413 | uint64_t offset; |
1414 | uint32_t size; | |
1415 | int ret; | |
3aee1200 | 1416 | |
1417 | g_assert(block_num < tf->num_blocks); | |
6cd62ccf | 1418 | |
f628823c | 1419 | if(tf->buffer.head != NULL) { |
f0241068 | 1420 | if(munmap(tf->buffer.head, PAGE_ALIGN(tf->buffer.size))) { |
f628823c | 1421 | g_warning("unmap size : %u\n", |
f0241068 | 1422 | PAGE_ALIGN(tf->buffer.size)); |
f628823c | 1423 | perror("munmap error"); |
1424 | g_assert(0); | |
1425 | } | |
1426 | } | |
f0241068 MD |
1427 | |
1428 | ret = get_block_offset_size(tf, block_num, &offset, &size); | |
1429 | g_assert(!ret); | |
1430 | ||
93556665 MD |
1431 | g_debug("Map block %u, offset %llu, size %u\n", block_num, |
1432 | (unsigned long long)offset, (unsigned int)size); | |
1433 | ||
3aee1200 | 1434 | /* Multiple of pages aligned head */ |
f0241068 MD |
1435 | tf->buffer.head = mmap(0, (size_t)size, PROT_READ, MAP_PRIVATE, |
1436 | tf->fd, (off_t)offset); | |
3aee1200 | 1437 | |
3865ea09 | 1438 | if(tf->buffer.head == MAP_FAILED) { |
3aee1200 | 1439 | perror("Error in allocating memory for buffer of tracefile"); |
3865ea09 | 1440 | g_assert(0); |
3aee1200 | 1441 | goto map_error; |
6cd62ccf | 1442 | } |
f64fedd7 | 1443 | g_assert( ( (gulong)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
6cd62ccf | 1444 | |
3aee1200 | 1445 | tf->buffer.index = block_num; |
1446 | ||
64dd41a5 | 1447 | header = (ltt_subbuffer_header_t *)tf->buffer.head; |
3aee1200 | 1448 | |
3aee1200 | 1449 | tf->buffer.begin.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
64dd41a5 | 1450 | &header->cycle_count_begin); |
3aee1200 | 1451 | tf->buffer.end.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
64dd41a5 | 1452 | &header->cycle_count_end); |
f0241068 MD |
1453 | tf->buffer.offset = offset; |
1454 | tf->buffer.size = ltt_get_uint32(LTT_GET_BO(tf), | |
1455 | &header->sb_size); | |
f0241068 MD |
1456 | tf->buffer.data_size = ltt_get_uint32(LTT_GET_BO(tf), |
1457 | &header->data_size); | |
3aee1200 | 1458 | tf->buffer.tsc = tf->buffer.begin.cycle_count; |
1459 | tf->event.tsc = tf->buffer.tsc; | |
986e2a7c | 1460 | tf->buffer.freq = tf->buffer.begin.freq; |
3aee1200 | 1461 | |
93556665 | 1462 | g_assert(size == tf->buffer.size); |
f0241068 MD |
1463 | g_assert(tf->buffer.data_size <= tf->buffer.size); |
1464 | ||
22660d97 BP |
1465 | if (tf->trace->start_freq) |
1466 | { | |
1467 | tf->buffer.begin.freq = tf->trace->start_freq; | |
1468 | tf->buffer.begin.timestamp = ltt_interpolate_time_from_tsc(tf, | |
1469 | tf->buffer.begin.cycle_count); | |
1470 | tf->buffer.end.freq = tf->trace->start_freq; | |
1471 | tf->buffer.end.timestamp = ltt_interpolate_time_from_tsc(tf, | |
1472 | tf->buffer.end.cycle_count); | |
1473 | } | |
1474 | ||
3aee1200 | 1475 | /* Make the current event point to the beginning of the buffer : |
1476 | * it means that the event read must get the first event. */ | |
1477 | tf->event.tracefile = tf; | |
1478 | tf->event.block = block_num; | |
eed2ef37 | 1479 | tf->event.offset = 0; |
3aee1200 | 1480 | |
a2bbf2e5 | 1481 | if (header->events_lost) { |
1482 | g_warning("%d events lost so far in tracefile %s at block %u", | |
0c2f4984 | 1483 | (guint)header->events_lost, |
a2bbf2e5 | 1484 | g_quark_to_string(tf->long_name), |
1485 | block_num); | |
426f6149 | 1486 | tf->events_lost = header->events_lost; |
1487 | } | |
a2bbf2e5 | 1488 | if (header->subbuf_corrupt) { |
1489 | g_warning("%d subbuffer(s) corrupted so far in tracefile %s at block %u", | |
0c2f4984 | 1490 | (guint)header->subbuf_corrupt, |
a2bbf2e5 | 1491 | g_quark_to_string(tf->long_name), |
1492 | block_num); | |
426f6149 | 1493 | tf->subbuf_corrupt = header->subbuf_corrupt; |
1494 | } | |
1495 | ||
3aee1200 | 1496 | return 0; |
6cd62ccf | 1497 | |
3aee1200 | 1498 | map_error: |
1499 | return -errno; | |
6cd62ccf | 1500 | } |
1501 | ||
91f8d488 | 1502 | static void print_debug_event_data(LttEvent *ev) |
1503 | { | |
1504 | unsigned int offset = 0; | |
1505 | int i, j; | |
1506 | ||
1507 | if (!max(ev->event_size, ev->data_size)) | |
1508 | return; | |
1509 | ||
43ed82b5 | 1510 | g_printf("Event data (tracefile %s offset %" PRIx64 "):\n", |
1511 | g_quark_to_string(ev->tracefile->long_name), | |
f0241068 | 1512 | (uint64_t)ev->tracefile->buffer.offset |
43ed82b5 | 1513 | + (long)ev->data - (long)ev->tracefile->buffer.head); |
91f8d488 | 1514 | |
1515 | while (offset < max(ev->event_size, ev->data_size)) { | |
1516 | g_printf("%8lx", (long)ev->data + offset | |
1517 | - (long)ev->tracefile->buffer.head); | |
1518 | g_printf(" "); | |
1519 | ||
1520 | for (i = 0; i < 4 ; i++) { | |
1521 | for (j = 0; j < 4; j++) { | |
1522 | if (offset + ((i * 4) + j) < max(ev->event_size, ev->data_size)) | |
1523 | g_printf("%02hhX", ((char*)ev->data)[offset + ((i * 4) + j)]); | |
1524 | else | |
1525 | g_printf(" "); | |
1526 | g_printf(" "); | |
1527 | } | |
1528 | if (i < 4) | |
1529 | g_printf(" "); | |
1530 | } | |
1531 | ||
1532 | g_printf(" "); | |
1533 | ||
1534 | for (i = 0; i < 4; i++) { | |
1535 | for (j = 0; j < 4; j++) { | |
1536 | if (offset + ((i * 4) + j) < max(ev->event_size, ev->data_size)) { | |
1537 | if (isprint(((char*)ev->data)[offset + ((i * 4) + j)])) | |
1538 | g_printf("%c", ((char*)ev->data)[offset + ((i * 4) + j)]); | |
1539 | else | |
1540 | g_printf("."); | |
1541 | } else | |
1542 | g_printf(" "); | |
1543 | } | |
1544 | } | |
1545 | offset+=16; | |
1546 | g_printf("\n"); | |
1547 | } | |
1548 | } | |
1549 | ||
77175651 | 1550 | /* It will update the fields offsets too */ |
1551 | void ltt_update_event_size(LttTracefile *tf) | |
6cd62ccf | 1552 | { |
2312de30 | 1553 | off_t size = 0; |
d2007fbd | 1554 | struct marker_info *info; |
750eb11a | 1555 | |
1556 | if (tf->name == LTT_TRACEFILE_NAME_METADATA) { | |
1557 | switch((enum marker_id)tf->event.event_id) { | |
1558 | case MARKER_ID_SET_MARKER_ID: | |
1559 | size = strlen((char*)tf->event.data) + 1; | |
1560 | g_debug("marker %s id set", (char*)tf->event.data + size); | |
1561 | size += strlen((char*)tf->event.data + size) + 1; | |
1562 | size += ltt_align(size, sizeof(guint16), tf->alignment); | |
1563 | size += sizeof(guint16); | |
1564 | size += sizeof(guint8); | |
1565 | size += sizeof(guint8); | |
1566 | size += sizeof(guint8); | |
1567 | size += sizeof(guint8); | |
1568 | size += sizeof(guint8); | |
1569 | break; | |
1570 | case MARKER_ID_SET_MARKER_FORMAT: | |
1571 | size = strlen((char*)tf->event.data) + 1; | |
1572 | g_debug("marker %s format set", (char*)tf->event.data); | |
1573 | size += strlen((char*)tf->event.data + size) + 1; | |
1574 | size += strlen((char*)tf->event.data + size) + 1; | |
1575 | break; | |
1576 | } | |
256a5b3a | 1577 | } |
1578 | ||
750eb11a | 1579 | info = marker_get_info_from_id(tf->mdata, tf->event.event_id); |
dcf96842 | 1580 | |
256a5b3a | 1581 | if (tf->event.event_id >= MARKER_CORE_IDS) |
1582 | g_assert(info != NULL); | |
1583 | ||
1584 | /* Do not update field offsets of core markers when initially reading the | |
2fc874ab | 1585 | * metadata tracefile when the infos about these markers do not exist yet. |
256a5b3a | 1586 | */ |
1587 | if (likely(info && info->fields)) { | |
2fc874ab | 1588 | /* alignment */ |
196085f2 | 1589 | tf->event.data += ltt_align((off_t)(unsigned long)tf->event.data, |
1590 | info->largest_align, | |
2fc874ab | 1591 | info->alignment); |
1592 | /* size, dynamically computed */ | |
256a5b3a | 1593 | if (info->size != -1) |
1594 | size = info->size; | |
1595 | else | |
750eb11a | 1596 | size = marker_update_fields_offsets(marker_get_info_from_id(tf->mdata, |
256a5b3a | 1597 | tf->event.event_id), tf->event.data); |
44f317b7 | 1598 | } |
c4afd5d8 | 1599 | |
d2007fbd | 1600 | tf->event.data_size = size; |
1601 | ||
1602 | /* Check consistency between kernel and LTTV structure sizes */ | |
2fc874ab | 1603 | if(tf->event.event_size == G_MAXUINT) { |
d2007fbd | 1604 | /* Event size too big to fit in the event size field */ |
1605 | tf->event.event_size = tf->event.data_size; | |
1606 | } | |
91f8d488 | 1607 | |
1608 | if (a_event_debug) | |
1609 | print_debug_event_data(&tf->event); | |
1610 | ||
d2007fbd | 1611 | if (tf->event.data_size != tf->event.event_size) { |
750eb11a | 1612 | struct marker_info *info = marker_get_info_from_id(tf->mdata, |
3c165eaf | 1613 | tf->event.event_id); |
750eb11a | 1614 | if (!info) |
1615 | g_error("Undescribed event %hhu in channel %s", tf->event.event_id, | |
1616 | g_quark_to_string(tf->name)); | |
3c165eaf | 1617 | g_error("Kernel/LTTV event size differs for event %s: kernel %u, LTTV %u", |
1618 | g_quark_to_string(info->name), | |
1619 | tf->event.event_size, tf->event.data_size); | |
d2007fbd | 1620 | exit(-1); |
1621 | } | |
6cd62ccf | 1622 | } |
1623 | ||
6cd62ccf | 1624 | |
2fc874ab | 1625 | /* Take the tf current event offset and use the event id to figure out where is |
1626 | * the next event offset. | |
3aee1200 | 1627 | * |
1628 | * This is an internal function not aiming at being used elsewhere : it will | |
1629 | * not jump over the current block limits. Please consider using | |
1630 | * ltt_tracefile_read to do this. | |
1631 | * | |
1632 | * Returns 0 on success | |
1633 | * ERANGE if we are at the end of the buffer. | |
1634 | * ENOPROTOOPT if an error occured when getting the current event size. | |
1635 | */ | |
8655430b | 1636 | static int ltt_seek_next_event(LttTracefile *tf) |
6cd62ccf | 1637 | { |
3aee1200 | 1638 | int ret = 0; |
1639 | void *pos; | |
3aee1200 | 1640 | |
1641 | /* seek over the buffer header if we are at the buffer start */ | |
eed2ef37 | 1642 | if(tf->event.offset == 0) { |
51551c6f | 1643 | tf->event.offset += tf->buffer_header_size; |
b77d1b57 | 1644 | |
f0241068 | 1645 | if(tf->event.offset == tf->buffer.data_size) { |
b77d1b57 | 1646 | ret = ERANGE; |
1647 | } | |
3aee1200 | 1648 | goto found; |
1649 | } | |
2fc874ab | 1650 | |
3aee1200 | 1651 | pos = tf->event.data; |
1652 | ||
77175651 | 1653 | if(tf->event.data_size < 0) goto error; |
3aee1200 | 1654 | |
77175651 | 1655 | pos += (size_t)tf->event.data_size; |
3aee1200 | 1656 | |
eed2ef37 | 1657 | tf->event.offset = pos - tf->buffer.head; |
cb03932a | 1658 | |
f0241068 | 1659 | if(tf->event.offset == tf->buffer.data_size) { |
cb03932a | 1660 | ret = ERANGE; |
1661 | goto found; | |
1662 | } | |
f0241068 | 1663 | g_assert(tf->event.offset < tf->buffer.data_size); |
3aee1200 | 1664 | |
1665 | found: | |
1666 | return ret; | |
1667 | ||
1668 | error: | |
1669 | g_error("Error in ltt_seek_next_event for tracefile %s", | |
1670 | g_quark_to_string(tf->name)); | |
1671 | return ENOPROTOOPT; | |
6cd62ccf | 1672 | } |
1673 | ||
f104d082 | 1674 | |
6cd62ccf | 1675 | /***************************************************************************** |
1676 | *Function name | |
eed2ef37 | 1677 | * ltt_get_int : get an integer number |
6cd62ccf | 1678 | *Input params |
3aee1200 | 1679 | * reverse_byte_order: must we reverse the byte order ? |
6cd62ccf | 1680 | * size : the size of the integer |
3aee1200 | 1681 | * ptr : the data pointer |
6cd62ccf | 1682 | *Return value |
cf74a6f1 | 1683 | * gint64 : a 64 bits integer |
6cd62ccf | 1684 | ****************************************************************************/ |
1685 | ||
eed2ef37 | 1686 | gint64 ltt_get_int(gboolean reverse_byte_order, gint size, void *data) |
6cd62ccf | 1687 | { |
3aee1200 | 1688 | gint64 val; |
cf74a6f1 | 1689 | |
1690 | switch(size) { | |
3aee1200 | 1691 | case 1: val = *((gint8*)data); break; |
1692 | case 2: val = ltt_get_int16(reverse_byte_order, data); break; | |
1693 | case 4: val = ltt_get_int32(reverse_byte_order, data); break; | |
1694 | case 8: val = ltt_get_int64(reverse_byte_order, data); break; | |
1695 | default: val = ltt_get_int64(reverse_byte_order, data); | |
1696 | g_critical("get_int : integer size %d unknown", size); | |
cf74a6f1 | 1697 | break; |
1698 | } | |
1699 | ||
3aee1200 | 1700 | return val; |
6cd62ccf | 1701 | } |
3aee1200 | 1702 | |
6cd62ccf | 1703 | /***************************************************************************** |
1704 | *Function name | |
eed2ef37 | 1705 | * ltt_get_uint : get an unsigned integer number |
6cd62ccf | 1706 | *Input params |
3aee1200 | 1707 | * reverse_byte_order: must we reverse the byte order ? |
1708 | * size : the size of the integer | |
1709 | * ptr : the data pointer | |
1710 | *Return value | |
1711 | * guint64 : a 64 bits unsigned integer | |
6cd62ccf | 1712 | ****************************************************************************/ |
1713 | ||
eed2ef37 | 1714 | guint64 ltt_get_uint(gboolean reverse_byte_order, gint size, void *data) |
6cd62ccf | 1715 | { |
3aee1200 | 1716 | guint64 val; |
1717 | ||
1718 | switch(size) { | |
1719 | case 1: val = *((gint8*)data); break; | |
1720 | case 2: val = ltt_get_uint16(reverse_byte_order, data); break; | |
1721 | case 4: val = ltt_get_uint32(reverse_byte_order, data); break; | |
1722 | case 8: val = ltt_get_uint64(reverse_byte_order, data); break; | |
1723 | default: val = ltt_get_uint64(reverse_byte_order, data); | |
1724 | g_critical("get_uint : unsigned integer size %d unknown", | |
1725 | size); | |
1726 | break; | |
1727 | } | |
1728 | ||
1729 | return val; | |
6cd62ccf | 1730 | } |
3aee1200 | 1731 | |
1732 | ||
a5dcde2f | 1733 | /* get the node name of the system */ |
1734 | ||
1735 | char * ltt_trace_system_description_node_name (LttSystemDescription * s) | |
1736 | { | |
1737 | return s->node_name; | |
1738 | } | |
1739 | ||
1740 | ||
1741 | /* get the domain name of the system */ | |
1742 | ||
1743 | char * ltt_trace_system_description_domain_name (LttSystemDescription * s) | |
1744 | { | |
1745 | return s->domain_name; | |
1746 | } | |
1747 | ||
1748 | ||
1749 | /* get the description of the system */ | |
1750 | ||
1751 | char * ltt_trace_system_description_description (LttSystemDescription * s) | |
1752 | { | |
1753 | return s->description; | |
1754 | } | |
1755 | ||
1756 | ||
bf33dd50 | 1757 | /* get the NTP corrected start time of the trace */ |
7bd563ec | 1758 | LttTime ltt_trace_start_time(LttTrace *t) |
a5dcde2f | 1759 | { |
7bd563ec | 1760 | return t->start_time; |
a5dcde2f | 1761 | } |
1762 | ||
bf33dd50 | 1763 | /* get the monotonic start time of the trace */ |
1764 | LttTime ltt_trace_start_time_monotonic(LttTrace *t) | |
1765 | { | |
1766 | return t->start_time_from_tsc; | |
1767 | } | |
1768 | ||
43ed82b5 | 1769 | static __attribute__ ((__unused__)) LttTracefile *ltt_tracefile_new() |
18206708 | 1770 | { |
afd57a3c | 1771 | LttTracefile *tf; |
1772 | tf = g_new(LttTracefile, 1); | |
1773 | tf->event.tracefile = tf; | |
1774 | return tf; | |
18206708 | 1775 | } |
1776 | ||
43ed82b5 | 1777 | static __attribute__ ((__unused__)) void ltt_tracefile_destroy(LttTracefile *tf) |
18206708 | 1778 | { |
1779 | g_free(tf); | |
1780 | } | |
1781 | ||
43ed82b5 | 1782 | static __attribute__ ((__unused__)) void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src) |
18206708 | 1783 | { |
1784 | *dest = *src; | |
1785 | } | |
1786 | ||
3aee1200 | 1787 | /* Before library loading... */ |
1788 | ||
8655430b | 1789 | static __attribute__((constructor)) void init(void) |
3aee1200 | 1790 | { |
750eb11a | 1791 | LTT_TRACEFILE_NAME_METADATA = g_quark_from_string("metadata"); |
3aee1200 | 1792 | } |