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 | |
43ed82b5 |
54 | /* from marker.c */ |
55 | extern long marker_update_fields_offsets(struct marker_info *info, const char *data); |
56 | |
2fc874ab |
57 | /* Tracefile names used in this file */ |
3aee1200 |
58 | |
2fc874ab |
59 | GQuark LTT_TRACEFILE_NAME_METADATA; |
3aee1200 |
60 | |
86005ded |
61 | #ifndef g_open |
62 | #define g_open open |
63 | #endif |
64 | |
65 | |
51b5991e |
66 | #define __UNUSED__ __attribute__((__unused__)) |
6cd62ccf |
67 | |
a1062ddd |
68 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
3aee1200 |
69 | |
70 | #ifndef g_debug |
a1062ddd |
71 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
3aee1200 |
72 | #endif |
a1062ddd |
73 | |
45e14832 |
74 | #define g_close close |
8959a0c8 |
75 | |
b77d1b57 |
76 | /* Those macros must be called from within a function where page_size is a known |
77 | * variable */ |
78 | #define PAGE_MASK (~(page_size-1)) |
79 | #define PAGE_ALIGN(addr) (((addr)+page_size-1)&PAGE_MASK) |
80 | |
9c731a50 |
81 | LttTrace *father_trace = NULL; |
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 | |
2fc874ab |
88 | #if 0 |
3aee1200 |
89 | /* get the size of the field type according to |
90 | * The facility size information. */ |
91 | static inline void preset_field_type_size(LttTracefile *tf, |
92 | LttEventType *event_type, |
93 | off_t offset_root, off_t offset_parent, |
94 | enum field_status *fixed_root, enum field_status *fixed_parent, |
95 | LttField *field); |
f104d082 |
96 | #endif //0 |
6cd62ccf |
97 | |
3aee1200 |
98 | /* map a fixed size or a block information from the file (fd) */ |
99 | static gint map_block(LttTracefile * tf, guint block_num); |
100 | |
101 | /* calculate nsec per cycles for current block */ |
791dffa6 |
102 | #if 0 |
103 | static guint32 calc_nsecs_per_cycle(LttTracefile * t); |
104 | static guint64 cycles_2_ns(LttTracefile *tf, guint64 cycles); |
105 | #endif //0 |
6cd62ccf |
106 | |
3aee1200 |
107 | /* go to the next event */ |
108 | static int ltt_seek_next_event(LttTracefile *tf); |
6cd62ccf |
109 | |
3c165eaf |
110 | static int open_tracefiles(LttTrace *trace, gchar *root_path, |
111 | gchar *relative_path); |
2fc874ab |
112 | static int ltt_process_metadata_tracefile(LttTracefile *tf); |
3c165eaf |
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); |
3c165eaf |
117 | static void ltt_update_event_size(LttTracefile *tf); |
91f8d488 |
118 | |
119 | /* Enable event debugging */ |
120 | static int a_event_debug = 0; |
121 | |
122 | void ltt_event_debug(int state) |
123 | { |
124 | a_event_debug = state; |
125 | } |
126 | |
b7576a11 |
127 | /* trace can be NULL |
128 | * |
129 | * Return value : 0 success, 1 bad tracefile |
130 | */ |
64dd41a5 |
131 | static int parse_trace_header(ltt_subbuffer_header_t *header, |
132 | LttTracefile *tf, LttTrace *t) |
b7576a11 |
133 | { |
64dd41a5 |
134 | if (header->magic_number == LTT_MAGIC_NUMBER) |
b7576a11 |
135 | tf->reverse_bo = 0; |
64dd41a5 |
136 | else if(header->magic_number == LTT_REV_MAGIC_NUMBER) |
b7576a11 |
137 | tf->reverse_bo = 1; |
138 | else /* invalid magic number, bad tracefile ! */ |
139 | return 1; |
64dd41a5 |
140 | |
141 | if(t) { |
142 | t->ltt_major_version = header->major_version; |
143 | t->ltt_minor_version = header->minor_version; |
144 | t->arch_size = header->arch_size; |
145 | } |
146 | tf->alignment = header->alignment; |
147 | |
b7576a11 |
148 | /* Get float byte order : might be different from int byte order |
149 | * (or is set to 0 if the trace has no float (kernel trace)) */ |
64dd41a5 |
150 | tf->float_word_order = 0; |
b7576a11 |
151 | |
64dd41a5 |
152 | switch(header->major_version) { |
b7576a11 |
153 | case 0: |
2fc874ab |
154 | case 1: |
3c165eaf |
155 | g_warning("Unsupported trace version : %hhu.%hhu", |
64dd41a5 |
156 | header->major_version, header->minor_version); |
3c165eaf |
157 | return 1; |
158 | break; |
2fc874ab |
159 | case 2: |
64dd41a5 |
160 | switch(header->minor_version) { |
750eb11a |
161 | case 3: |
b7576a11 |
162 | { |
750eb11a |
163 | struct ltt_subbuffer_header_2_3 *vheader = header; |
1550fba6 |
164 | tf->buffer_header_size = ltt_subbuffer_header_size(); |
64dd41a5 |
165 | tf->tscbits = 27; |
166 | tf->eventbits = 5; |
2fc874ab |
167 | tf->tsc_mask = ((1ULL << tf->tscbits) - 1); |
168 | tf->tsc_mask_next_bit = (1ULL << tf->tscbits); |
169 | |
e939e5b2 |
170 | if(t) { |
171 | t->start_freq = ltt_get_uint64(LTT_GET_BO(tf), |
172 | &vheader->start_freq); |
a3999b49 |
173 | t->freq_scale = ltt_get_uint32(LTT_GET_BO(tf), |
174 | &vheader->freq_scale); |
9c731a50 |
175 | if(father_trace) { |
176 | t->start_freq = father_trace->start_freq; |
177 | t->freq_scale = father_trace->freq_scale; |
64dd41a5 |
178 | } else { |
9c731a50 |
179 | father_trace = t; |
180 | } |
e939e5b2 |
181 | t->start_tsc = ltt_get_uint64(LTT_GET_BO(tf), |
64dd41a5 |
182 | &vheader->cycle_count_begin); |
183 | t->start_monotonic = 0; |
e939e5b2 |
184 | t->start_time.tv_sec = ltt_get_uint64(LTT_GET_BO(tf), |
185 | &vheader->start_time_sec); |
186 | t->start_time.tv_nsec = ltt_get_uint64(LTT_GET_BO(tf), |
187 | &vheader->start_time_usec); |
188 | t->start_time.tv_nsec *= 1000; /* microsec to nanosec */ |
189 | |
190 | t->start_time_from_tsc = ltt_time_from_uint64( |
c7f86478 |
191 | (double)t->start_tsc |
d0e3122a |
192 | * 1000000000.0 * tf->trace->freq_scale |
62e4e7bf |
193 | / (double)t->start_freq); |
e939e5b2 |
194 | } |
195 | } |
196 | break; |
b7576a11 |
197 | default: |
986e2a7c |
198 | g_warning("Unsupported trace version : %hhu.%hhu", |
64dd41a5 |
199 | header->major_version, header->minor_version); |
b7576a11 |
200 | return 1; |
201 | } |
202 | break; |
b7576a11 |
203 | default: |
204 | g_warning("Unsupported trace version : %hhu.%hhu", |
64dd41a5 |
205 | header->major_version, header->minor_version); |
b7576a11 |
206 | return 1; |
207 | } |
b7576a11 |
208 | return 0; |
209 | } |
210 | |
211 | |
212 | |
6cd62ccf |
213 | /***************************************************************************** |
214 | *Function name |
963b5f2d |
215 | * ltt_tracefile_open : open a trace file, construct a LttTracefile |
6cd62ccf |
216 | *Input params |
963b5f2d |
217 | * t : the trace containing the tracefile |
218 | * fileName : path name of the trace file |
3aee1200 |
219 | * tf : the tracefile structure |
6cd62ccf |
220 | *Return value |
3aee1200 |
221 | * : 0 for success, -1 otherwise. |
6cd62ccf |
222 | ****************************************************************************/ |
223 | |
8655430b |
224 | static gint ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf) |
6cd62ccf |
225 | { |
963b5f2d |
226 | struct stat lTDFStat; /* Trace data file status */ |
64dd41a5 |
227 | ltt_subbuffer_header_t *header; |
b77d1b57 |
228 | int page_size = getpagesize(); |
6cd62ccf |
229 | |
230 | //open the file |
d3d34f49 |
231 | tf->long_name = g_quark_from_string(fileName); |
963b5f2d |
232 | tf->trace = t; |
3865ea09 |
233 | tf->fd = open(fileName, O_RDONLY); |
6cd62ccf |
234 | if(tf->fd < 0){ |
2a74fbf4 |
235 | g_warning("Unable to open input data file %s\n", fileName); |
3aee1200 |
236 | goto end; |
6cd62ccf |
237 | } |
238 | |
239 | // Get the file's status |
240 | if(fstat(tf->fd, &lTDFStat) < 0){ |
2a74fbf4 |
241 | g_warning("Unable to get the status of the input data file %s\n", fileName); |
3aee1200 |
242 | goto close_file; |
6cd62ccf |
243 | } |
244 | |
245 | // Is the file large enough to contain a trace |
823820eb |
246 | if(lTDFStat.st_size < |
1550fba6 |
247 | (off_t)(ltt_subbuffer_header_size())){ |
8710c6c7 |
248 | g_print("The input data file %s does not contain a trace\n", fileName); |
3aee1200 |
249 | goto close_file; |
250 | } |
251 | |
252 | /* Temporarily map the buffer start header to get trace information */ |
253 | /* Multiple of pages aligned head */ |
b77d1b57 |
254 | tf->buffer.head = mmap(0, |
1550fba6 |
255 | PAGE_ALIGN(ltt_subbuffer_header_size()), PROT_READ, |
3aee1200 |
256 | MAP_PRIVATE, tf->fd, 0); |
3865ea09 |
257 | if(tf->buffer.head == MAP_FAILED) { |
3aee1200 |
258 | perror("Error in allocating memory for buffer of tracefile"); |
259 | goto close_file; |
6cd62ccf |
260 | } |
f64fedd7 |
261 | g_assert( ( (gulong)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
3aee1200 |
262 | |
64dd41a5 |
263 | header = (ltt_subbuffer_header_t *)tf->buffer.head; |
6cd62ccf |
264 | |
64dd41a5 |
265 | if(parse_trace_header(header, tf, NULL)) { |
51551c6f |
266 | g_warning("parse_trace_header error"); |
267 | goto unmap_file; |
268 | } |
3aee1200 |
269 | |
6cd62ccf |
270 | //store the size of the file |
271 | tf->file_size = lTDFStat.st_size; |
f628823c |
272 | tf->buf_size = ltt_get_uint32(LTT_GET_BO(tf), &header->buf_size); |
273 | tf->num_blocks = tf->file_size / tf->buf_size; |
426f6149 |
274 | tf->events_lost = 0; |
275 | tf->subbuf_corrupt = 0; |
f628823c |
276 | |
277 | if(munmap(tf->buffer.head, |
1550fba6 |
278 | PAGE_ALIGN(ltt_subbuffer_header_size()))) { |
43ed82b5 |
279 | g_warning("unmap size : %zu\n", |
1550fba6 |
280 | PAGE_ALIGN(ltt_subbuffer_header_size())); |
f628823c |
281 | perror("munmap error"); |
282 | g_assert(0); |
283 | } |
3aee1200 |
284 | tf->buffer.head = NULL; |
6cd62ccf |
285 | |
963b5f2d |
286 | //read the first block |
3aee1200 |
287 | if(map_block(tf,0)) { |
288 | perror("Cannot map block for tracefile"); |
289 | goto close_file; |
290 | } |
291 | |
292 | return 0; |
6cd62ccf |
293 | |
3aee1200 |
294 | /* Error */ |
295 | unmap_file: |
f628823c |
296 | if(munmap(tf->buffer.head, |
1550fba6 |
297 | PAGE_ALIGN(ltt_subbuffer_header_size()))) { |
43ed82b5 |
298 | g_warning("unmap size : %zu\n", |
1550fba6 |
299 | PAGE_ALIGN(ltt_subbuffer_header_size())); |
f628823c |
300 | perror("munmap error"); |
301 | g_assert(0); |
302 | } |
3aee1200 |
303 | close_file: |
3865ea09 |
304 | close(tf->fd); |
3aee1200 |
305 | end: |
306 | return -1; |
6cd62ccf |
307 | } |
308 | |
6cd62ccf |
309 | |
310 | /***************************************************************************** |
311 | *Function name |
963b5f2d |
312 | * ltt_tracefile_close: close a trace file, |
6cd62ccf |
313 | *Input params |
963b5f2d |
314 | * t : tracefile which will be closed |
6cd62ccf |
315 | ****************************************************************************/ |
316 | |
8655430b |
317 | static void ltt_tracefile_close(LttTracefile *t) |
6cd62ccf |
318 | { |
f628823c |
319 | int page_size = getpagesize(); |
320 | |
3aee1200 |
321 | if(t->buffer.head != NULL) |
f628823c |
322 | if(munmap(t->buffer.head, PAGE_ALIGN(t->buf_size))) { |
323 | g_warning("unmap size : %u\n", |
324 | PAGE_ALIGN(t->buf_size)); |
325 | perror("munmap error"); |
326 | g_assert(0); |
327 | } |
328 | |
3865ea09 |
329 | close(t->fd); |
963b5f2d |
330 | } |
6cd62ccf |
331 | |
8d1e6362 |
332 | /**************************************************************************** |
333 | * get_absolute_pathname |
803229fa |
334 | * |
8d1e6362 |
335 | * return the unique pathname in the system |
336 | * |
ef35d837 |
337 | * MD : Fixed this function so it uses realpath, dealing well with |
338 | * forgotten cases (.. were not used correctly before). |
803229fa |
339 | * |
963b5f2d |
340 | ****************************************************************************/ |
45e14832 |
341 | void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname) |
9f797243 |
342 | { |
9f797243 |
343 | abs_pathname[0] = '\0'; |
803229fa |
344 | |
2fc874ab |
345 | if (realpath(pathname, abs_pathname) != NULL) |
ef35d837 |
346 | return; |
347 | else |
348 | { |
8d1e6362 |
349 | /* error, return the original path unmodified */ |
ef35d837 |
350 | strcpy(abs_pathname, pathname); |
9f797243 |
351 | return; |
352 | } |
ef35d837 |
353 | return; |
9f797243 |
354 | } |
355 | |
3aee1200 |
356 | /* Search for something like : .*_.* |
357 | * |
358 | * The left side is the name, the right side is the number. |
750eb11a |
359 | * Exclude leading /. |
4ad053df |
360 | * Exclude flight- prefix. |
3aee1200 |
361 | */ |
362 | |
8655430b |
363 | static int get_tracefile_name_number(gchar *raw_name, |
3aee1200 |
364 | GQuark *name, |
ae3d0f50 |
365 | guint *num, |
f64fedd7 |
366 | gulong *tid, |
367 | gulong *pgid, |
62e4e7bf |
368 | guint64 *creation) |
6cd62ccf |
369 | { |
3aee1200 |
370 | guint raw_name_len = strlen(raw_name); |
371 | gchar char_name[PATH_MAX]; |
8af0138e |
372 | int i; |
3aee1200 |
373 | int underscore_pos; |
374 | long int cpu_num; |
375 | gchar *endptr; |
62e4e7bf |
376 | gchar *tmpptr; |
3aee1200 |
377 | |
750eb11a |
378 | /* skip leading / */ |
379 | for(i = 0; i < raw_name_len-1;i++) { |
380 | if(raw_name[i] != '/') |
381 | break; |
382 | } |
383 | raw_name = &raw_name[i]; |
384 | raw_name_len = strlen(raw_name); |
385 | |
3aee1200 |
386 | for(i=raw_name_len-1;i>=0;i--) { |
387 | if(raw_name[i] == '_') break; |
388 | } |
ae3d0f50 |
389 | if(i==-1) { /* Either not found or name length is 0 */ |
62e4e7bf |
390 | /* This is a userspace tracefile */ |
391 | strncpy(char_name, raw_name, raw_name_len); |
392 | char_name[raw_name_len] = '\0'; |
393 | *name = g_quark_from_string(char_name); |
394 | *num = 0; /* unknown cpu */ |
395 | for(i=0;i<raw_name_len;i++) { |
396 | if(raw_name[i] == '/') { |
397 | break; |
398 | } |
399 | } |
400 | i++; |
401 | for(;i<raw_name_len;i++) { |
402 | if(raw_name[i] == '/') { |
403 | break; |
404 | } |
405 | } |
406 | i++; |
407 | for(;i<raw_name_len;i++) { |
408 | if(raw_name[i] == '-') { |
409 | break; |
410 | } |
411 | } |
412 | if(i == raw_name_len) return -1; |
413 | i++; |
414 | tmpptr = &raw_name[i]; |
415 | for(;i<raw_name_len;i++) { |
416 | if(raw_name[i] == '.') { |
417 | raw_name[i] = ' '; |
418 | break; |
419 | } |
420 | } |
421 | *tid = strtoul(tmpptr, &endptr, 10); |
422 | if(endptr == tmpptr) |
423 | return -1; /* No digit */ |
424 | if(*tid == ULONG_MAX) |
425 | return -1; /* underflow / overflow */ |
426 | i++; |
427 | tmpptr = &raw_name[i]; |
428 | for(;i<raw_name_len;i++) { |
429 | if(raw_name[i] == '.') { |
430 | raw_name[i] = ' '; |
431 | break; |
432 | } |
433 | } |
434 | *pgid = strtoul(tmpptr, &endptr, 10); |
435 | if(endptr == tmpptr) |
436 | return -1; /* No digit */ |
437 | if(*pgid == ULONG_MAX) |
438 | return -1; /* underflow / overflow */ |
439 | i++; |
440 | tmpptr = &raw_name[i]; |
441 | *creation = strtoull(tmpptr, &endptr, 10); |
442 | if(endptr == tmpptr) |
443 | return -1; /* No digit */ |
444 | if(*creation == G_MAXUINT64) |
445 | return -1; /* underflow / overflow */ |
446 | } else { |
447 | underscore_pos = i; |
448 | |
449 | cpu_num = strtol(raw_name+underscore_pos+1, &endptr, 10); |
450 | |
451 | if(endptr == raw_name+underscore_pos+1) |
452 | return -1; /* No digit */ |
453 | if(cpu_num == LONG_MIN || cpu_num == LONG_MAX) |
454 | return -1; /* underflow / overflow */ |
455 | |
4ad053df |
456 | if (!strncmp(raw_name, "flight-", sizeof("flight-") - 1)) { |
457 | raw_name += sizeof("flight-") - 1; |
458 | underscore_pos -= sizeof("flight-") - 1; |
459 | } |
62e4e7bf |
460 | strncpy(char_name, raw_name, underscore_pos); |
461 | char_name[underscore_pos] = '\0'; |
62e4e7bf |
462 | *name = g_quark_from_string(char_name); |
463 | *num = cpu_num; |
464 | } |
69bd59ed |
465 | |
b333a76b |
466 | |
3aee1200 |
467 | return 0; |
468 | } |
963b5f2d |
469 | |
3aee1200 |
470 | |
3865ea09 |
471 | GData **ltt_trace_get_tracefiles_groups(LttTrace *trace) |
77175651 |
472 | { |
3865ea09 |
473 | return &trace->tracefiles; |
77175651 |
474 | } |
475 | |
476 | |
3865ea09 |
477 | void compute_tracefile_group(GQuark key_id, |
478 | GArray *group, |
479 | struct compute_tracefile_group_args *args) |
77175651 |
480 | { |
43ed82b5 |
481 | unsigned int i; |
77175651 |
482 | LttTracefile *tf; |
483 | |
484 | for(i=0; i<group->len; i++) { |
485 | tf = &g_array_index (group, LttTracefile, i); |
486 | if(tf->cpu_online) |
3865ea09 |
487 | args->func(tf, args->func_args); |
77175651 |
488 | } |
489 | } |
490 | |
491 | |
8655430b |
492 | static void ltt_tracefile_group_destroy(gpointer data) |
3aee1200 |
493 | { |
494 | GArray *group = (GArray *)data; |
43ed82b5 |
495 | unsigned int i; |
3aee1200 |
496 | LttTracefile *tf; |
497 | |
750eb11a |
498 | if (group->len > 0) |
499 | destroy_marker_data(g_array_index (group, LttTracefile, 0).mdata); |
3aee1200 |
500 | for(i=0; i<group->len; i++) { |
501 | tf = &g_array_index (group, LttTracefile, i); |
502 | if(tf->cpu_online) |
503 | ltt_tracefile_close(tf); |
504 | } |
505 | g_array_free(group, TRUE); |
6cd62ccf |
506 | } |
507 | |
43ed82b5 |
508 | static __attribute__ ((__unused__)) gboolean ltt_tracefile_group_has_cpu_online(gpointer data) |
49bf71b5 |
509 | { |
3aee1200 |
510 | GArray *group = (GArray *)data; |
43ed82b5 |
511 | unsigned int i; |
3aee1200 |
512 | LttTracefile *tf; |
513 | |
514 | for(i=0; i<group->len; i++) { |
515 | tf = &g_array_index (group, LttTracefile, i); |
3c165eaf |
516 | if(tf->cpu_online) |
517 | return 1; |
3aee1200 |
518 | } |
519 | return 0; |
49bf71b5 |
520 | } |
521 | |
522 | |
3aee1200 |
523 | /* Open each tracefile under a specific directory. Put them in a |
524 | * GData : permits to access them using their tracefile group pathname. |
525 | * i.e. access control/modules tracefile group by index : |
526 | * "control/module". |
3865ea09 |
527 | * |
528 | * relative path is the path relative to the trace root |
529 | * root path is the full path |
3aee1200 |
530 | * |
4a55f63e |
531 | * A tracefile group is simply an array where all the per cpu tracefiles sit. |
3aee1200 |
532 | */ |
533 | |
8655430b |
534 | static int open_tracefiles(LttTrace *trace, gchar *root_path, gchar *relative_path) |
f7afe191 |
535 | { |
62e4e7bf |
536 | DIR *dir = opendir(root_path); |
537 | struct dirent *entry; |
538 | struct stat stat_buf; |
750eb11a |
539 | int ret, i; |
540 | struct marker_data *mdata; |
3865ea09 |
541 | |
62e4e7bf |
542 | gchar path[PATH_MAX]; |
543 | int path_len; |
544 | gchar *path_ptr; |
3aee1200 |
545 | |
3865ea09 |
546 | int rel_path_len; |
69bd59ed |
547 | gchar rel_path[PATH_MAX]; |
548 | gchar *rel_path_ptr; |
cb03932a |
549 | LttTracefile tmp_tf; |
3865ea09 |
550 | |
62e4e7bf |
551 | if(dir == NULL) { |
552 | perror(root_path); |
553 | return ENOENT; |
554 | } |
3aee1200 |
555 | |
62e4e7bf |
556 | strncpy(path, root_path, PATH_MAX-1); |
557 | path_len = strlen(path); |
558 | path[path_len] = '/'; |
559 | path_len++; |
560 | path_ptr = path + path_len; |
3aee1200 |
561 | |
3865ea09 |
562 | strncpy(rel_path, relative_path, PATH_MAX-1); |
563 | rel_path_len = strlen(rel_path); |
564 | rel_path[rel_path_len] = '/'; |
565 | rel_path_len++; |
566 | rel_path_ptr = rel_path + rel_path_len; |
567 | |
62e4e7bf |
568 | while((entry = readdir(dir)) != NULL) { |
569 | |
570 | if(entry->d_name[0] == '.') continue; |
571 | |
572 | strncpy(path_ptr, entry->d_name, PATH_MAX - path_len); |
573 | strncpy(rel_path_ptr, entry->d_name, PATH_MAX - rel_path_len); |
574 | |
575 | ret = stat(path, &stat_buf); |
576 | if(ret == -1) { |
577 | perror(path); |
578 | continue; |
579 | } |
580 | |
581 | g_debug("Tracefile file or directory : %s\n", path); |
582 | |
fe452434 |
583 | // if(strcmp(rel_path, "/eventdefs") == 0) continue; |
74a588bb |
584 | |
62e4e7bf |
585 | if(S_ISDIR(stat_buf.st_mode)) { |
3aee1200 |
586 | |
62e4e7bf |
587 | g_debug("Entering subdirectory...\n"); |
588 | ret = open_tracefiles(trace, path, rel_path); |
589 | if(ret < 0) continue; |
590 | } else if(S_ISREG(stat_buf.st_mode)) { |
591 | GQuark name; |
f64fedd7 |
592 | guint num; |
593 | gulong tid, pgid; |
62e4e7bf |
594 | guint64 creation; |
3aee1200 |
595 | GArray *group; |
f64fedd7 |
596 | num = 0; |
597 | tid = pgid = 0; |
62e4e7bf |
598 | creation = 0; |
ae3d0f50 |
599 | if(get_tracefile_name_number(rel_path, &name, &num, &tid, &pgid, &creation)) |
3aee1200 |
600 | continue; /* invalid name */ |
3865ea09 |
601 | |
62e4e7bf |
602 | g_debug("Opening file.\n"); |
cb03932a |
603 | if(ltt_tracefile_open(trace, path, &tmp_tf)) { |
604 | g_info("Error opening tracefile %s", path); |
605 | |
606 | continue; /* error opening the tracefile : bad magic number ? */ |
607 | } |
608 | |
3865ea09 |
609 | g_debug("Tracefile name is %s and number is %u", |
610 | g_quark_to_string(name), num); |
750eb11a |
611 | |
612 | mdata = NULL; |
cb03932a |
613 | tmp_tf.cpu_online = 1; |
614 | tmp_tf.cpu_num = num; |
d3d34f49 |
615 | tmp_tf.name = name; |
62e4e7bf |
616 | tmp_tf.tid = tid; |
617 | tmp_tf.pgid = pgid; |
618 | tmp_tf.creation = creation; |
3865ea09 |
619 | group = g_datalist_id_get_data(&trace->tracefiles, name); |
3aee1200 |
620 | if(group == NULL) { |
621 | /* Elements are automatically cleared when the array is allocated. |
622 | * It makes the cpu_online variable set to 0 : cpu offline, by default. |
623 | */ |
624 | group = g_array_sized_new (FALSE, TRUE, sizeof(LttTracefile), 10); |
3865ea09 |
625 | g_datalist_id_set_data_full(&trace->tracefiles, name, |
3aee1200 |
626 | group, ltt_tracefile_group_destroy); |
750eb11a |
627 | mdata = allocate_marker_data(); |
628 | if (!mdata) |
629 | g_error("Error in allocating marker data"); |
3aee1200 |
630 | } |
cb03932a |
631 | |
3aee1200 |
632 | /* Add the per cpu tracefile to the named group */ |
633 | unsigned int old_len = group->len; |
634 | if(num+1 > old_len) |
635 | group = g_array_set_size(group, num+1); |
750eb11a |
636 | |
637 | g_assert(group->len > 0); |
638 | if (!mdata) |
639 | mdata = g_array_index (group, LttTracefile, 0).mdata; |
640 | |
cb03932a |
641 | g_array_index (group, LttTracefile, num) = tmp_tf; |
afd57a3c |
642 | g_array_index (group, LttTracefile, num).event.tracefile = |
643 | &g_array_index (group, LttTracefile, num); |
750eb11a |
644 | for (i = 0; i < group->len; i++) |
645 | g_array_index (group, LttTracefile, i).mdata = mdata; |
62e4e7bf |
646 | } |
647 | } |
648 | |
649 | closedir(dir); |
3aee1200 |
650 | |
62e4e7bf |
651 | return 0; |
f7afe191 |
652 | } |
653 | |
3aee1200 |
654 | |
655 | /* Presumes the tracefile is already seeked at the beginning. It makes sense, |
656 | * because it must be done just after the opening */ |
2fc874ab |
657 | static int ltt_process_metadata_tracefile(LttTracefile *tf) |
3aee1200 |
658 | { |
659 | int err; |
3aee1200 |
660 | |
661 | while(1) { |
662 | err = ltt_tracefile_read_seek(tf); |
663 | if(err == EPERM) goto seek_error; |
664 | else if(err == ERANGE) break; /* End of tracefile */ |
665 | |
666 | err = ltt_tracefile_read_update_event(tf); |
667 | if(err) goto update_error; |
668 | |
3aee1200 |
669 | /* The rules are : |
2fc874ab |
670 | * It contains only core events : |
671 | * 0 : set_marker_id |
672 | * 1 : set_marker_format |
3aee1200 |
673 | */ |
3c165eaf |
674 | if(tf->event.event_id >= MARKER_CORE_IDS) { |
2fc874ab |
675 | /* Should only contain core events */ |
676 | g_warning("Error in processing metadata file %s, " |
3c165eaf |
677 | "should not contain event id %u.", g_quark_to_string(tf->name), |
678 | tf->event.event_id); |
3aee1200 |
679 | err = EPERM; |
3c165eaf |
680 | goto event_id_error; |
d2083cab |
681 | } else { |
2e13d6af |
682 | char *pos; |
750eb11a |
683 | const char *channel_name, *marker_name, *format; |
3c165eaf |
684 | uint16_t id; |
685 | guint8 int_size, long_size, pointer_size, size_t_size, alignment; |
3aee1200 |
686 | |
3c165eaf |
687 | switch((enum marker_id)tf->event.event_id) { |
688 | case MARKER_ID_SET_MARKER_ID: |
750eb11a |
689 | channel_name = pos = tf->event.data; |
690 | pos += strlen(channel_name) + 1; |
691 | marker_name = pos; |
692 | g_debug("Doing MARKER_ID_SET_MARKER_ID of marker %s.%s", |
693 | channel_name, marker_name); |
2e13d6af |
694 | pos += strlen(marker_name) + 1; |
2fc874ab |
695 | pos += ltt_align((size_t)pos, sizeof(guint16), tf->alignment); |
3c165eaf |
696 | id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
750eb11a |
697 | g_debug("In MARKER_ID_SET_MARKER_ID of marker %s.%s id %hu", |
698 | channel_name, marker_name, id); |
3c165eaf |
699 | pos += sizeof(guint16); |
700 | int_size = *(guint8*)pos; |
701 | pos += sizeof(guint8); |
702 | long_size = *(guint8*)pos; |
703 | pos += sizeof(guint8); |
704 | pointer_size = *(guint8*)pos; |
705 | pos += sizeof(guint8); |
706 | size_t_size = *(guint8*)pos; |
707 | pos += sizeof(guint8); |
708 | alignment = *(guint8*)pos; |
709 | pos += sizeof(guint8); |
750eb11a |
710 | marker_id_event(tf->trace, |
711 | g_quark_from_string(channel_name), |
712 | g_quark_from_string(marker_name), |
3c165eaf |
713 | id, int_size, long_size, |
714 | pointer_size, size_t_size, alignment); |
3aee1200 |
715 | break; |
3c165eaf |
716 | case MARKER_ID_SET_MARKER_FORMAT: |
750eb11a |
717 | channel_name = pos = tf->event.data; |
718 | pos += strlen(channel_name) + 1; |
719 | marker_name = pos; |
720 | g_debug("Doing MARKER_ID_SET_MARKER_FORMAT of marker %s.%s", |
721 | channel_name, marker_name); |
2e13d6af |
722 | pos += strlen(marker_name) + 1; |
2e13d6af |
723 | format = pos; |
3c165eaf |
724 | pos += strlen(format) + 1; |
750eb11a |
725 | marker_format_event(tf->trace, |
726 | g_quark_from_string(channel_name), |
727 | g_quark_from_string(marker_name), |
3c165eaf |
728 | format); |
2fc874ab |
729 | /* get information from dictionary TODO */ |
d1bb700c |
730 | break; |
3aee1200 |
731 | default: |
2fc874ab |
732 | g_warning("Error in processing metadata file %s, " |
3c165eaf |
733 | "unknown event id %hhu.", |
3aee1200 |
734 | g_quark_to_string(tf->name), |
735 | tf->event.event_id); |
736 | err = EPERM; |
737 | goto event_id_error; |
738 | } |
739 | } |
963b5f2d |
740 | } |
3aee1200 |
741 | return 0; |
963b5f2d |
742 | |
3aee1200 |
743 | /* Error handling */ |
3aee1200 |
744 | event_id_error: |
3aee1200 |
745 | update_error: |
746 | seek_error: |
2fc874ab |
747 | g_warning("An error occured in metadata tracefile parsing"); |
3aee1200 |
748 | return err; |
6cd62ccf |
749 | } |
750 | |
e95fe8f7 |
751 | /* |
752 | * Open a trace and return its LttTrace handle. |
753 | * |
754 | * pathname must be the directory of the trace |
755 | */ |
963b5f2d |
756 | |
3aee1200 |
757 | LttTrace *ltt_trace_open(const gchar *pathname) |
758 | { |
759 | gchar abs_path[PATH_MAX]; |
760 | LttTrace * t; |
761 | LttTracefile *tf; |
762 | GArray *group; |
43ed82b5 |
763 | unsigned int i; |
764 | int ret; |
64dd41a5 |
765 | ltt_subbuffer_header_t *header; |
62e4e7bf |
766 | DIR *dir; |
767 | struct dirent *entry; |
62e4e7bf |
768 | struct stat stat_buf; |
b56dcdf2 |
769 | gchar path[PATH_MAX]; |
3aee1200 |
770 | |
771 | t = g_new(LttTrace, 1); |
772 | if(!t) goto alloc_error; |
773 | |
774 | get_absolute_pathname(pathname, abs_path); |
775 | t->pathname = g_quark_from_string(abs_path); |
776 | |
3aee1200 |
777 | g_datalist_init(&t->tracefiles); |
b56dcdf2 |
778 | |
779 | /* Test to see if it looks like a trace */ |
62e4e7bf |
780 | dir = opendir(abs_path); |
781 | if(dir == NULL) { |
782 | perror(abs_path); |
783 | goto open_error; |
784 | } |
785 | while((entry = readdir(dir)) != NULL) { |
b56dcdf2 |
786 | strcpy(path, abs_path); |
787 | strcat(path, "/"); |
788 | strcat(path, entry->d_name); |
62e4e7bf |
789 | ret = stat(path, &stat_buf); |
790 | if(ret == -1) { |
791 | perror(path); |
792 | continue; |
793 | } |
b56dcdf2 |
794 | } |
795 | closedir(dir); |
796 | |
b56dcdf2 |
797 | /* Open all the tracefiles */ |
e45551ac |
798 | if(open_tracefiles(t, abs_path, "")) { |
799 | g_warning("Error opening tracefile %s", abs_path); |
b56dcdf2 |
800 | goto find_error; |
e45551ac |
801 | } |
3aee1200 |
802 | |
750eb11a |
803 | /* Parse each trace metadata_N files : get runtime fac. info */ |
2fc874ab |
804 | group = g_datalist_id_get_data(&t->tracefiles, LTT_TRACEFILE_NAME_METADATA); |
3aee1200 |
805 | if(group == NULL) { |
8af0138e |
806 | g_warning("Trace %s has no metadata tracefile", abs_path); |
750eb11a |
807 | goto find_error; |
3aee1200 |
808 | } |
809 | |
e0c7c400 |
810 | /* |
750eb11a |
811 | * Get the trace information for the metadata_0 tracefile. |
e0c7c400 |
812 | * Getting a correct trace start_time and start_tsc is insured by the fact |
813 | * that no subbuffers are supposed to be lost in the metadata channel. |
814 | * Therefore, the first subbuffer contains the start_tsc timestamp in its |
815 | * buffer header. |
816 | */ |
16fcbb80 |
817 | g_assert(group->len > 0); |
818 | tf = &g_array_index (group, LttTracefile, 0); |
64dd41a5 |
819 | header = (ltt_subbuffer_header_t *)tf->buffer.head; |
ac3b1c7d |
820 | ret = parse_trace_header(header, tf, t); |
821 | g_assert(!ret); |
b56dcdf2 |
822 | |
823 | t->num_cpu = group->len; |
16fcbb80 |
824 | |
750eb11a |
825 | //ret = allocate_marker_data(t); |
826 | //if (ret) |
827 | // g_error("Error in allocating marker data"); |
d79909d1 |
828 | |
3aee1200 |
829 | for(i=0; i<group->len; i++) { |
830 | tf = &g_array_index (group, LttTracefile, i); |
e85b0b1b |
831 | if (tf->cpu_online) |
2fc874ab |
832 | if(ltt_process_metadata_tracefile(tf)) |
750eb11a |
833 | goto find_error; |
834 | // goto metadata_error; |
3aee1200 |
835 | } |
dd3a6d39 |
836 | |
3aee1200 |
837 | return t; |
838 | |
839 | /* Error handling */ |
750eb11a |
840 | //metadata_error: |
841 | // destroy_marker_data(t); |
b56dcdf2 |
842 | find_error: |
3aee1200 |
843 | g_datalist_clear(&t->tracefiles); |
b56dcdf2 |
844 | open_error: |
3aee1200 |
845 | g_free(t); |
846 | alloc_error: |
847 | return NULL; |
848 | |
849 | } |
6cd62ccf |
850 | |
e95fe8f7 |
851 | /* Open another, completely independant, instance of a trace. |
852 | * |
853 | * A read on this new instance will read the first event of the trace. |
854 | * |
3aee1200 |
855 | * When we copy a trace, we want all the opening actions to happen again : |
856 | * the trace will be reopened and totally independant from the original. |
857 | * That's why we call ltt_trace_open. |
e95fe8f7 |
858 | */ |
3aee1200 |
859 | LttTrace *ltt_trace_copy(LttTrace *self) |
963b5f2d |
860 | { |
3aee1200 |
861 | return ltt_trace_open(g_quark_to_string(self->pathname)); |
963b5f2d |
862 | } |
863 | |
e95fe8f7 |
864 | /* |
865 | * Close a trace |
866 | */ |
867 | |
3aee1200 |
868 | void ltt_trace_close(LttTrace *t) |
6cd62ccf |
869 | { |
3aee1200 |
870 | g_datalist_clear(&t->tracefiles); |
871 | g_free(t); |
6cd62ccf |
872 | } |
873 | |
3aee1200 |
874 | |
6cd62ccf |
875 | /***************************************************************************** |
3aee1200 |
876 | * Get the start time and end time of the trace |
6cd62ccf |
877 | ****************************************************************************/ |
878 | |
3c165eaf |
879 | void ltt_tracefile_time_span_get(LttTracefile *tf, |
3aee1200 |
880 | LttTime *start, LttTime *end) |
6cd62ccf |
881 | { |
3aee1200 |
882 | int err; |
6cd62ccf |
883 | |
3aee1200 |
884 | err = map_block(tf, 0); |
885 | if(unlikely(err)) { |
886 | g_error("Can not map block"); |
887 | *start = ltt_time_infinite; |
888 | } else |
889 | *start = tf->buffer.begin.timestamp; |
890 | |
891 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
892 | if(unlikely(err)) { |
893 | g_error("Can not map block"); |
894 | *end = ltt_time_zero; |
895 | } else |
896 | *end = tf->buffer.end.timestamp; |
6cd62ccf |
897 | } |
898 | |
3aee1200 |
899 | struct tracefile_time_span_get_args { |
900 | LttTrace *t; |
901 | LttTime *start; |
902 | LttTime *end; |
903 | }; |
963b5f2d |
904 | |
8655430b |
905 | static void group_time_span_get(GQuark name, gpointer data, gpointer user_data) |
963b5f2d |
906 | { |
3aee1200 |
907 | struct tracefile_time_span_get_args *args = |
908 | (struct tracefile_time_span_get_args*)user_data; |
909 | |
910 | GArray *group = (GArray *)data; |
43ed82b5 |
911 | unsigned int i; |
3aee1200 |
912 | LttTracefile *tf; |
913 | LttTime tmp_start; |
914 | LttTime tmp_end; |
915 | |
916 | for(i=0; i<group->len; i++) { |
917 | tf = &g_array_index (group, LttTracefile, i); |
918 | if(tf->cpu_online) { |
919 | ltt_tracefile_time_span_get(tf, &tmp_start, &tmp_end); |
920 | if(ltt_time_compare(*args->start, tmp_start)>0) *args->start = tmp_start; |
921 | if(ltt_time_compare(*args->end, tmp_end)<0) *args->end = tmp_end; |
922 | } |
923 | } |
6cd62ccf |
924 | } |
925 | |
8655430b |
926 | /* return the start and end time of a trace */ |
927 | |
487ad181 |
928 | void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end) |
929 | { |
3aee1200 |
930 | LttTime min_start = ltt_time_infinite; |
931 | LttTime max_end = ltt_time_zero; |
932 | struct tracefile_time_span_get_args args = { t, &min_start, &max_end }; |
487ad181 |
933 | |
3aee1200 |
934 | g_datalist_foreach(&t->tracefiles, &group_time_span_get, &args); |
935 | |
936 | if(start != NULL) *start = min_start; |
937 | if(end != NULL) *end = max_end; |
938 | |
487ad181 |
939 | } |
940 | |
941 | |
3aee1200 |
942 | /* Seek to the first event in a tracefile that has a time equal or greater than |
943 | * the time passed in parameter. |
944 | * |
945 | * If the time parameter is outside the tracefile time span, seek to the first |
27304273 |
946 | * event or if after, return ERANGE. |
3aee1200 |
947 | * |
948 | * If the time parameter is before the first event, we have to seek specially to |
949 | * there. |
950 | * |
27304273 |
951 | * If the time is after the end of the trace, return ERANGE. |
3aee1200 |
952 | * |
953 | * Do a binary search to find the right block, then a sequential search in the |
954 | * block to find the event. |
955 | * |
956 | * In the special case where the time requested fits inside a block that has no |
957 | * event corresponding to the requested time, the first event of the next block |
958 | * will be seeked. |
959 | * |
960 | * IMPORTANT NOTE : // FIXME everywhere... |
961 | * |
962 | * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time : |
963 | * you will jump over an event if you do. |
964 | * |
965 | * Return value : 0 : no error, the tf->event can be used |
27304273 |
966 | * ERANGE : time if after the last event of the trace |
3aee1200 |
967 | * otherwise : this is an error. |
968 | * |
969 | * */ |
970 | |
971 | int ltt_tracefile_seek_time(LttTracefile *tf, LttTime time) |
972 | { |
973 | int ret = 0; |
974 | int err; |
975 | unsigned int block_num, high, low; |
976 | |
977 | /* seek at the beginning of trace */ |
978 | err = map_block(tf, 0); /* First block */ |
979 | if(unlikely(err)) { |
980 | g_error("Can not map block"); |
981 | goto fail; |
caf7a67a |
982 | } |
983 | |
3aee1200 |
984 | /* If the time is lower or equal the beginning of the trace, |
985 | * go to the first event. */ |
986 | if(ltt_time_compare(time, tf->buffer.begin.timestamp) <= 0) { |
987 | ret = ltt_tracefile_read(tf); |
27304273 |
988 | if(ret == ERANGE) goto range; |
989 | else if (ret) goto fail; |
3aee1200 |
990 | goto found; /* There is either no event in the trace or the event points |
991 | to the first event in the trace */ |
992 | } |
caf7a67a |
993 | |
3aee1200 |
994 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
995 | if(unlikely(err)) { |
996 | g_error("Can not map block"); |
997 | goto fail; |
caf7a67a |
998 | } |
6cd62ccf |
999 | |
27304273 |
1000 | /* If the time is after the end of the trace, return ERANGE. */ |
1001 | if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
1002 | goto range; |
3aee1200 |
1003 | } |
62e55dd6 |
1004 | |
3aee1200 |
1005 | /* Binary search the block */ |
1006 | high = tf->num_blocks - 1; |
1007 | low = 0; |
1008 | |
1009 | while(1) { |
1010 | block_num = ((high-low) / 2) + low; |
1011 | |
1012 | err = map_block(tf, block_num); |
1013 | if(unlikely(err)) { |
1014 | g_error("Can not map block"); |
1015 | goto fail; |
db55eaae |
1016 | } |
3aee1200 |
1017 | if(high == low) { |
1018 | /* We cannot divide anymore : this is what would happen if the time |
1019 | * requested was exactly between two consecutive buffers'end and start |
1020 | * timestamps. This is also what would happend if we didn't deal with out |
1021 | * of span cases prior in this function. */ |
1022 | /* The event is right in the buffer! |
1023 | * (or in the next buffer first event) */ |
1024 | while(1) { |
1025 | ret = ltt_tracefile_read(tf); |
27304273 |
1026 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ |
3aee1200 |
1027 | else if(ret) goto fail; |
1028 | |
d9e13a0f |
1029 | if(ltt_time_compare(time, tf->event.event_time) <= 0) |
e45551ac |
1030 | goto found; |
3aee1200 |
1031 | } |
1032 | |
27304273 |
1033 | } else if(ltt_time_compare(time, tf->buffer.begin.timestamp) < 0) { |
3aee1200 |
1034 | /* go to lower part */ |
b1369bef |
1035 | high = block_num - 1; |
3aee1200 |
1036 | } else if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
1037 | /* go to higher part */ |
b1369bef |
1038 | low = block_num + 1; |
3aee1200 |
1039 | } else {/* The event is right in the buffer! |
1040 | (or in the next buffer first event) */ |
1041 | while(1) { |
27304273 |
1042 | ret = ltt_tracefile_read(tf); |
1043 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ |
3aee1200 |
1044 | else if(ret) goto fail; |
1045 | |
d9e13a0f |
1046 | if(ltt_time_compare(time, tf->event.event_time) <= 0) |
3aee1200 |
1047 | break; |
6cd62ccf |
1048 | } |
3aee1200 |
1049 | goto found; |
6cd62ccf |
1050 | } |
6cd62ccf |
1051 | } |
3aee1200 |
1052 | |
1053 | found: |
1054 | return 0; |
27304273 |
1055 | range: |
1056 | return ERANGE; |
3aee1200 |
1057 | |
1058 | /* Error handling */ |
1059 | fail: |
1060 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
1061 | g_quark_to_string(tf->name)); |
1062 | return EPERM; |
6cd62ccf |
1063 | } |
1064 | |
e95fe8f7 |
1065 | /* Seek to a position indicated by an LttEventPosition |
1066 | */ |
80da81ad |
1067 | |
8655430b |
1068 | int ltt_tracefile_seek_position(LttTracefile *tf, const LttEventPosition *ep) |
1069 | { |
3aee1200 |
1070 | int err; |
1071 | |
1072 | if(ep->tracefile != tf) { |
1073 | goto fail; |
80da81ad |
1074 | } |
1075 | |
3aee1200 |
1076 | err = map_block(tf, ep->block); |
1077 | if(unlikely(err)) { |
1078 | g_error("Can not map block"); |
1079 | goto fail; |
1080 | } |
1081 | |
1082 | tf->event.offset = ep->offset; |
18206708 |
1083 | |
62e4e7bf |
1084 | /* Put back the event real tsc */ |
1085 | tf->event.tsc = ep->tsc; |
1086 | tf->buffer.tsc = ep->tsc; |
78f79181 |
1087 | |
3aee1200 |
1088 | err = ltt_tracefile_read_update_event(tf); |
1089 | if(err) goto fail; |
73faf25a |
1090 | |
1091 | /* deactivate this, as it does nothing for now |
3aee1200 |
1092 | err = ltt_tracefile_read_op(tf); |
1093 | if(err) goto fail; |
73faf25a |
1094 | */ |
80da81ad |
1095 | |
a0c1f622 |
1096 | return 0; |
3aee1200 |
1097 | |
1098 | fail: |
1099 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
1100 | g_quark_to_string(tf->name)); |
a0c1f622 |
1101 | return 1; |
3aee1200 |
1102 | } |
1103 | |
e95fe8f7 |
1104 | /* Given a TSC value, return the LttTime (seconds,nanoseconds) it |
1105 | * corresponds to. |
1106 | */ |
1107 | |
ae3d0f50 |
1108 | LttTime ltt_interpolate_time_from_tsc(LttTracefile *tf, guint64 tsc) |
3aee1200 |
1109 | { |
1110 | LttTime time; |
62e4e7bf |
1111 | |
1112 | if(tsc > tf->trace->start_tsc) { |
1113 | time = ltt_time_from_uint64( |
1114 | (double)(tsc - tf->trace->start_tsc) |
d0e3122a |
1115 | * 1000000000.0 * tf->trace->freq_scale |
62e4e7bf |
1116 | / (double)tf->trace->start_freq); |
1117 | time = ltt_time_add(tf->trace->start_time_from_tsc, time); |
1118 | } else { |
1119 | time = ltt_time_from_uint64( |
1120 | (double)(tf->trace->start_tsc - tsc) |
d0e3122a |
1121 | * 1000000000.0 * tf->trace->freq_scale |
62e4e7bf |
1122 | / (double)tf->trace->start_freq); |
1123 | time = ltt_time_sub(tf->trace->start_time_from_tsc, time); |
1124 | } |
3aee1200 |
1125 | return time; |
80da81ad |
1126 | } |
1127 | |
ae3d0f50 |
1128 | /* Calculate the real event time based on the buffer boundaries */ |
1129 | LttTime ltt_interpolate_time(LttTracefile *tf, LttEvent *event) |
1130 | { |
62e4e7bf |
1131 | return ltt_interpolate_time_from_tsc(tf, tf->buffer.tsc); |
ae3d0f50 |
1132 | } |
1133 | |
eed2ef37 |
1134 | |
1135 | /* Get the current event of the tracefile : valid until the next read */ |
1136 | LttEvent *ltt_tracefile_get_event(LttTracefile *tf) |
1137 | { |
1138 | return &tf->event; |
1139 | } |
1140 | |
1141 | |
1142 | |
6cd62ccf |
1143 | /***************************************************************************** |
1144 | *Function name |
3aee1200 |
1145 | * ltt_tracefile_read : Read the next event in the tracefile |
6cd62ccf |
1146 | *Input params |
1147 | * t : tracefile |
1148 | *Return value |
3aee1200 |
1149 | * |
1150 | * Returns 0 if an event can be used in tf->event. |
d822520b |
1151 | * Returns ERANGE on end of trace. The event in tf->event still can be used |
1152 | * (if the last block was not empty). |
3aee1200 |
1153 | * Returns EPERM on error. |
1154 | * |
1155 | * This function does make the tracefile event structure point to the event |
1156 | * currently pointed to by the tf->event. |
1157 | * |
1158 | * Note : you must call a ltt_tracefile_seek to the beginning of the trace to |
1159 | * reinitialize it after an error if you want results to be coherent. |
1160 | * It would be the case if a end of trace last buffer has no event : the end |
1161 | * of trace wouldn't be returned, but an error. |
1162 | * We make the assumption there is at least one event per buffer. |
6cd62ccf |
1163 | ****************************************************************************/ |
1164 | |
3aee1200 |
1165 | int ltt_tracefile_read(LttTracefile *tf) |
6cd62ccf |
1166 | { |
963b5f2d |
1167 | int err; |
6cd62ccf |
1168 | |
3aee1200 |
1169 | err = ltt_tracefile_read_seek(tf); |
1170 | if(err) return err; |
1171 | err = ltt_tracefile_read_update_event(tf); |
1172 | if(err) return err; |
73faf25a |
1173 | |
1174 | /* deactivate this, as it does nothing for now |
3aee1200 |
1175 | err = ltt_tracefile_read_op(tf); |
1176 | if(err) return err; |
73faf25a |
1177 | */ |
3aee1200 |
1178 | |
1179 | return 0; |
1180 | } |
1181 | |
1182 | int ltt_tracefile_read_seek(LttTracefile *tf) |
1183 | { |
1184 | int err; |
1185 | |
1186 | /* Get next buffer until we finally have an event, or end of trace */ |
1187 | while(1) { |
1188 | err = ltt_seek_next_event(tf); |
1189 | if(unlikely(err == ENOPROTOOPT)) { |
1190 | return EPERM; |
bdc36259 |
1191 | } |
bdc36259 |
1192 | |
3aee1200 |
1193 | /* Are we at the end of the buffer ? */ |
1194 | if(err == ERANGE) { |
1195 | if(unlikely(tf->buffer.index == tf->num_blocks-1)){ /* end of trace ? */ |
1196 | return ERANGE; |
1197 | } else { |
1198 | /* get next block */ |
1199 | err = map_block(tf, tf->buffer.index + 1); |
1200 | if(unlikely(err)) { |
1201 | g_error("Can not map block"); |
1202 | return EPERM; |
1203 | } |
1204 | } |
1205 | } else break; /* We found an event ! */ |
1206 | } |
2dee981d |
1207 | |
3aee1200 |
1208 | return 0; |
1209 | } |
18206708 |
1210 | |
e95fe8f7 |
1211 | /* do an operation when reading a new event */ |
18206708 |
1212 | |
73faf25a |
1213 | /* This function does nothing for now */ |
1214 | #if 0 |
3aee1200 |
1215 | int ltt_tracefile_read_op(LttTracefile *tf) |
1216 | { |
3aee1200 |
1217 | LttEvent *event; |
1218 | |
1219 | event = &tf->event; |
18206708 |
1220 | |
73faf25a |
1221 | /* do event specific operation */ |
1222 | |
1223 | /* nothing */ |
40331ba8 |
1224 | |
3aee1200 |
1225 | return 0; |
6cd62ccf |
1226 | } |
73faf25a |
1227 | #endif |
6cd62ccf |
1228 | |
91f8d488 |
1229 | static void print_debug_event_header(LttEvent *ev, void *start_pos, void *end_pos) |
1230 | { |
1231 | unsigned int offset = 0; |
1232 | int i, j; |
1233 | |
43ed82b5 |
1234 | g_printf("Event header (tracefile %s offset %" PRIx64 "):\n", |
afd57a3c |
1235 | g_quark_to_string(ev->tracefile->long_name), |
43ed82b5 |
1236 | ((uint64_t)ev->tracefile->buffer.index * ev->tracefile->buf_size) |
1237 | + (long)start_pos - (long)ev->tracefile->buffer.head); |
91f8d488 |
1238 | |
1239 | while (offset < (long)end_pos - (long)start_pos) { |
1240 | g_printf("%8lx", (long)start_pos - (long)ev->tracefile->buffer.head + offset); |
1241 | g_printf(" "); |
1242 | |
1243 | for (i = 0; i < 4 ; i++) { |
1244 | for (j = 0; j < 4; j++) { |
1245 | if (offset + ((i * 4) + j) < |
1246 | (long)end_pos - (long)start_pos) |
1247 | g_printf("%02hhX", |
d3353231 |
1248 | ((char*)start_pos)[offset + ((i * 4) + j)]); |
91f8d488 |
1249 | else |
1250 | g_printf(" "); |
1251 | g_printf(" "); |
1252 | } |
1253 | if (i < 4) |
1254 | g_printf(" "); |
1255 | } |
1256 | offset+=16; |
1257 | g_printf("\n"); |
1258 | } |
1259 | } |
1260 | |
6cd62ccf |
1261 | |
3aee1200 |
1262 | /* same as ltt_tracefile_read, but does not seek to the next event nor call |
1263 | * event specific operation. */ |
1264 | int ltt_tracefile_read_update_event(LttTracefile *tf) |
6cd62ccf |
1265 | { |
3aee1200 |
1266 | void * pos; |
1267 | LttEvent *event; |
91f8d488 |
1268 | void *pos_aligned; |
3aee1200 |
1269 | |
1270 | event = &tf->event; |
eed2ef37 |
1271 | pos = tf->buffer.head + event->offset; |
3aee1200 |
1272 | |
1273 | /* Read event header */ |
1274 | |
62e4e7bf |
1275 | /* Align the head */ |
2fc874ab |
1276 | pos += ltt_align((size_t)pos, sizeof(guint32), tf->alignment); |
91f8d488 |
1277 | pos_aligned = pos; |
3aee1200 |
1278 | |
2fc874ab |
1279 | event->timestamp = ltt_get_uint32(LTT_GET_BO(tf), pos); |
1280 | event->event_id = event->timestamp >> tf->tscbits; |
a9048165 |
1281 | event->timestamp = event->timestamp & tf->tsc_mask; |
2fc874ab |
1282 | pos += sizeof(guint32); |
1283 | |
1284 | switch (event->event_id) { |
1285 | case 29: /* LTT_RFLAG_ID_SIZE_TSC */ |
1286 | event->event_id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
1287 | pos += sizeof(guint16); |
1288 | event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos); |
1289 | pos += sizeof(guint16); |
1290 | if (event->event_size == 0xFFFF) { |
1291 | event->event_size = ltt_get_uint32(LTT_GET_BO(tf), pos); |
1292 | pos += sizeof(guint32); |
d1bb700c |
1293 | } |
2fc874ab |
1294 | pos += ltt_align((size_t)pos, sizeof(guint64), tf->alignment); |
1295 | tf->buffer.tsc = ltt_get_uint64(LTT_GET_BO(tf), pos); |
62e4e7bf |
1296 | pos += sizeof(guint64); |
2fc874ab |
1297 | break; |
1298 | case 30: /* LTT_RFLAG_ID_SIZE */ |
f439de06 |
1299 | event->event_id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
3c165eaf |
1300 | pos += sizeof(guint16); |
d1bb700c |
1301 | event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos); |
1302 | pos += sizeof(guint16); |
2fc874ab |
1303 | if (event->event_size == 0xFFFF) { |
1304 | event->event_size = ltt_get_uint32(LTT_GET_BO(tf), pos); |
1305 | pos += sizeof(guint32); |
1306 | } |
1307 | break; |
1308 | case 31: /* LTT_RFLAG_ID */ |
1309 | event->event_id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
1310 | pos += sizeof(guint16); |
1311 | event->event_size = G_MAXUINT; |
1312 | break; |
1313 | default: |
1314 | event->event_size = G_MAXUINT; |
1315 | break; |
1316 | } |
1317 | |
1318 | if (likely(event->event_id != 29)) { |
1319 | /* No extended timestamp */ |
1320 | if (event->timestamp < (tf->buffer.tsc & tf->tsc_mask)) |
1321 | tf->buffer.tsc = ((tf->buffer.tsc & ~tf->tsc_mask) /* overflow */ |
1322 | + tf->tsc_mask_next_bit) |
1323 | | (guint64)event->timestamp; |
1324 | else |
1325 | tf->buffer.tsc = (tf->buffer.tsc & ~tf->tsc_mask) /* no overflow */ |
1326 | | (guint64)event->timestamp; |
d1bb700c |
1327 | } |
2fc874ab |
1328 | event->tsc = tf->buffer.tsc; |
1329 | |
1330 | event->event_time = ltt_interpolate_time(tf, event); |
91f8d488 |
1331 | |
1332 | if (a_event_debug) |
1333 | print_debug_event_header(event, pos_aligned, pos); |
1334 | |
3aee1200 |
1335 | event->data = pos; |
1336 | |
2fc874ab |
1337 | /* |
1338 | * Let ltt_update_event_size update event->data according to the largest |
1339 | * alignment within the payload. |
1340 | * Get the data size and update the event fields with the current |
1341 | * information. */ |
eed2ef37 |
1342 | ltt_update_event_size(tf); |
77175651 |
1343 | |
3aee1200 |
1344 | return 0; |
6cd62ccf |
1345 | } |
1346 | |
507915ee |
1347 | |
6cd62ccf |
1348 | /**************************************************************************** |
1349 | *Function name |
3aee1200 |
1350 | * map_block : map a block from the file |
6cd62ccf |
1351 | *Input Params |
1352 | * lttdes : ltt trace file |
1353 | * whichBlock : the block which will be read |
1354 | *return value |
1355 | * 0 : success |
1356 | * EINVAL : lseek fail |
1357 | * EIO : can not read from the file |
1358 | ****************************************************************************/ |
1359 | |
8655430b |
1360 | static gint map_block(LttTracefile * tf, guint block_num) |
6cd62ccf |
1361 | { |
b77d1b57 |
1362 | int page_size = getpagesize(); |
64dd41a5 |
1363 | ltt_subbuffer_header_t *header; |
3aee1200 |
1364 | |
1365 | g_assert(block_num < tf->num_blocks); |
6cd62ccf |
1366 | |
f628823c |
1367 | if(tf->buffer.head != NULL) { |
1368 | if(munmap(tf->buffer.head, PAGE_ALIGN(tf->buf_size))) { |
1369 | g_warning("unmap size : %u\n", |
1370 | PAGE_ALIGN(tf->buf_size)); |
1371 | perror("munmap error"); |
1372 | g_assert(0); |
1373 | } |
1374 | } |
ac849774 |
1375 | |
3aee1200 |
1376 | /* Multiple of pages aligned head */ |
b77d1b57 |
1377 | tf->buffer.head = mmap(0, |
f628823c |
1378 | PAGE_ALIGN(tf->buf_size), |
b77d1b57 |
1379 | PROT_READ, MAP_PRIVATE, tf->fd, |
f628823c |
1380 | PAGE_ALIGN((off_t)tf->buf_size * (off_t)block_num)); |
3aee1200 |
1381 | |
3865ea09 |
1382 | if(tf->buffer.head == MAP_FAILED) { |
3aee1200 |
1383 | perror("Error in allocating memory for buffer of tracefile"); |
3865ea09 |
1384 | g_assert(0); |
3aee1200 |
1385 | goto map_error; |
6cd62ccf |
1386 | } |
f64fedd7 |
1387 | g_assert( ( (gulong)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
3aee1200 |
1388 | |
6cd62ccf |
1389 | |
3aee1200 |
1390 | tf->buffer.index = block_num; |
1391 | |
64dd41a5 |
1392 | header = (ltt_subbuffer_header_t *)tf->buffer.head; |
3aee1200 |
1393 | |
3aee1200 |
1394 | tf->buffer.begin.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
64dd41a5 |
1395 | &header->cycle_count_begin); |
1396 | tf->buffer.begin.freq = tf->trace->start_freq; |
ae3d0f50 |
1397 | |
1398 | tf->buffer.begin.timestamp = ltt_interpolate_time_from_tsc(tf, |
62e4e7bf |
1399 | tf->buffer.begin.cycle_count); |
3aee1200 |
1400 | tf->buffer.end.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
64dd41a5 |
1401 | &header->cycle_count_end); |
1402 | tf->buffer.end.freq = tf->trace->start_freq; |
62e4e7bf |
1403 | |
3aee1200 |
1404 | tf->buffer.lost_size = ltt_get_uint32(LTT_GET_BO(tf), |
986e2a7c |
1405 | &header->lost_size); |
ae3d0f50 |
1406 | tf->buffer.end.timestamp = ltt_interpolate_time_from_tsc(tf, |
62e4e7bf |
1407 | tf->buffer.end.cycle_count); |
3aee1200 |
1408 | tf->buffer.tsc = tf->buffer.begin.cycle_count; |
1409 | tf->event.tsc = tf->buffer.tsc; |
986e2a7c |
1410 | tf->buffer.freq = tf->buffer.begin.freq; |
3aee1200 |
1411 | |
1412 | /* FIXME |
1413 | * eventually support variable buffer size : will need a partial pre-read of |
1414 | * the headers to create an index when we open the trace... eventually. */ |
f628823c |
1415 | g_assert(tf->buf_size == ltt_get_uint32(LTT_GET_BO(tf), |
3aee1200 |
1416 | &header->buf_size)); |
507915ee |
1417 | |
3aee1200 |
1418 | /* Make the current event point to the beginning of the buffer : |
1419 | * it means that the event read must get the first event. */ |
1420 | tf->event.tracefile = tf; |
1421 | tf->event.block = block_num; |
eed2ef37 |
1422 | tf->event.offset = 0; |
3aee1200 |
1423 | |
a2bbf2e5 |
1424 | if (header->events_lost) { |
1425 | g_warning("%d events lost so far in tracefile %s at block %u", |
0c2f4984 |
1426 | (guint)header->events_lost, |
a2bbf2e5 |
1427 | g_quark_to_string(tf->long_name), |
1428 | block_num); |
426f6149 |
1429 | tf->events_lost = header->events_lost; |
1430 | } |
a2bbf2e5 |
1431 | if (header->subbuf_corrupt) { |
1432 | g_warning("%d subbuffer(s) corrupted so far in tracefile %s at block %u", |
0c2f4984 |
1433 | (guint)header->subbuf_corrupt, |
a2bbf2e5 |
1434 | g_quark_to_string(tf->long_name), |
1435 | block_num); |
426f6149 |
1436 | tf->subbuf_corrupt = header->subbuf_corrupt; |
1437 | } |
1438 | |
3aee1200 |
1439 | return 0; |
6cd62ccf |
1440 | |
3aee1200 |
1441 | map_error: |
1442 | return -errno; |
6cd62ccf |
1443 | } |
1444 | |
91f8d488 |
1445 | static void print_debug_event_data(LttEvent *ev) |
1446 | { |
1447 | unsigned int offset = 0; |
1448 | int i, j; |
1449 | |
1450 | if (!max(ev->event_size, ev->data_size)) |
1451 | return; |
1452 | |
43ed82b5 |
1453 | g_printf("Event data (tracefile %s offset %" PRIx64 "):\n", |
1454 | g_quark_to_string(ev->tracefile->long_name), |
1455 | ((uint64_t)ev->tracefile->buffer.index * ev->tracefile->buf_size) |
1456 | + (long)ev->data - (long)ev->tracefile->buffer.head); |
91f8d488 |
1457 | |
1458 | while (offset < max(ev->event_size, ev->data_size)) { |
1459 | g_printf("%8lx", (long)ev->data + offset |
1460 | - (long)ev->tracefile->buffer.head); |
1461 | g_printf(" "); |
1462 | |
1463 | for (i = 0; i < 4 ; i++) { |
1464 | for (j = 0; j < 4; j++) { |
1465 | if (offset + ((i * 4) + j) < max(ev->event_size, ev->data_size)) |
1466 | g_printf("%02hhX", ((char*)ev->data)[offset + ((i * 4) + j)]); |
1467 | else |
1468 | g_printf(" "); |
1469 | g_printf(" "); |
1470 | } |
1471 | if (i < 4) |
1472 | g_printf(" "); |
1473 | } |
1474 | |
1475 | g_printf(" "); |
1476 | |
1477 | for (i = 0; i < 4; i++) { |
1478 | for (j = 0; j < 4; j++) { |
1479 | if (offset + ((i * 4) + j) < max(ev->event_size, ev->data_size)) { |
1480 | if (isprint(((char*)ev->data)[offset + ((i * 4) + j)])) |
1481 | g_printf("%c", ((char*)ev->data)[offset + ((i * 4) + j)]); |
1482 | else |
1483 | g_printf("."); |
1484 | } else |
1485 | g_printf(" "); |
1486 | } |
1487 | } |
1488 | offset+=16; |
1489 | g_printf("\n"); |
1490 | } |
1491 | } |
1492 | |
77175651 |
1493 | /* It will update the fields offsets too */ |
1494 | void ltt_update_event_size(LttTracefile *tf) |
6cd62ccf |
1495 | { |
2312de30 |
1496 | off_t size = 0; |
d2007fbd |
1497 | struct marker_info *info; |
750eb11a |
1498 | |
1499 | if (tf->name == LTT_TRACEFILE_NAME_METADATA) { |
1500 | switch((enum marker_id)tf->event.event_id) { |
1501 | case MARKER_ID_SET_MARKER_ID: |
1502 | size = strlen((char*)tf->event.data) + 1; |
1503 | g_debug("marker %s id set", (char*)tf->event.data + size); |
1504 | size += strlen((char*)tf->event.data + size) + 1; |
1505 | size += ltt_align(size, sizeof(guint16), tf->alignment); |
1506 | size += sizeof(guint16); |
1507 | size += sizeof(guint8); |
1508 | size += sizeof(guint8); |
1509 | size += sizeof(guint8); |
1510 | size += sizeof(guint8); |
1511 | size += sizeof(guint8); |
1512 | break; |
1513 | case MARKER_ID_SET_MARKER_FORMAT: |
1514 | size = strlen((char*)tf->event.data) + 1; |
1515 | g_debug("marker %s format set", (char*)tf->event.data); |
1516 | size += strlen((char*)tf->event.data + size) + 1; |
1517 | size += strlen((char*)tf->event.data + size) + 1; |
1518 | break; |
1519 | } |
256a5b3a |
1520 | } |
1521 | |
750eb11a |
1522 | info = marker_get_info_from_id(tf->mdata, tf->event.event_id); |
dcf96842 |
1523 | |
256a5b3a |
1524 | if (tf->event.event_id >= MARKER_CORE_IDS) |
1525 | g_assert(info != NULL); |
1526 | |
1527 | /* Do not update field offsets of core markers when initially reading the |
2fc874ab |
1528 | * metadata tracefile when the infos about these markers do not exist yet. |
256a5b3a |
1529 | */ |
1530 | if (likely(info && info->fields)) { |
2fc874ab |
1531 | /* alignment */ |
196085f2 |
1532 | tf->event.data += ltt_align((off_t)(unsigned long)tf->event.data, |
1533 | info->largest_align, |
2fc874ab |
1534 | info->alignment); |
1535 | /* size, dynamically computed */ |
256a5b3a |
1536 | if (info->size != -1) |
1537 | size = info->size; |
1538 | else |
750eb11a |
1539 | size = marker_update_fields_offsets(marker_get_info_from_id(tf->mdata, |
256a5b3a |
1540 | tf->event.event_id), tf->event.data); |
44f317b7 |
1541 | } |
c4afd5d8 |
1542 | |
d2007fbd |
1543 | tf->event.data_size = size; |
1544 | |
1545 | /* Check consistency between kernel and LTTV structure sizes */ |
2fc874ab |
1546 | if(tf->event.event_size == G_MAXUINT) { |
d2007fbd |
1547 | /* Event size too big to fit in the event size field */ |
1548 | tf->event.event_size = tf->event.data_size; |
1549 | } |
91f8d488 |
1550 | |
1551 | if (a_event_debug) |
1552 | print_debug_event_data(&tf->event); |
1553 | |
d2007fbd |
1554 | if (tf->event.data_size != tf->event.event_size) { |
750eb11a |
1555 | struct marker_info *info = marker_get_info_from_id(tf->mdata, |
3c165eaf |
1556 | tf->event.event_id); |
750eb11a |
1557 | if (!info) |
1558 | g_error("Undescribed event %hhu in channel %s", tf->event.event_id, |
1559 | g_quark_to_string(tf->name)); |
3c165eaf |
1560 | g_error("Kernel/LTTV event size differs for event %s: kernel %u, LTTV %u", |
1561 | g_quark_to_string(info->name), |
1562 | tf->event.event_size, tf->event.data_size); |
d2007fbd |
1563 | exit(-1); |
1564 | } |
6cd62ccf |
1565 | } |
1566 | |
6cd62ccf |
1567 | |
2fc874ab |
1568 | /* Take the tf current event offset and use the event id to figure out where is |
1569 | * the next event offset. |
3aee1200 |
1570 | * |
1571 | * This is an internal function not aiming at being used elsewhere : it will |
1572 | * not jump over the current block limits. Please consider using |
1573 | * ltt_tracefile_read to do this. |
1574 | * |
1575 | * Returns 0 on success |
1576 | * ERANGE if we are at the end of the buffer. |
1577 | * ENOPROTOOPT if an error occured when getting the current event size. |
1578 | */ |
8655430b |
1579 | static int ltt_seek_next_event(LttTracefile *tf) |
6cd62ccf |
1580 | { |
3aee1200 |
1581 | int ret = 0; |
1582 | void *pos; |
3aee1200 |
1583 | |
1584 | /* seek over the buffer header if we are at the buffer start */ |
eed2ef37 |
1585 | if(tf->event.offset == 0) { |
51551c6f |
1586 | tf->event.offset += tf->buffer_header_size; |
b77d1b57 |
1587 | |
f628823c |
1588 | if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) { |
b77d1b57 |
1589 | ret = ERANGE; |
1590 | } |
3aee1200 |
1591 | goto found; |
1592 | } |
2fc874ab |
1593 | |
3aee1200 |
1594 | pos = tf->event.data; |
1595 | |
77175651 |
1596 | if(tf->event.data_size < 0) goto error; |
3aee1200 |
1597 | |
77175651 |
1598 | pos += (size_t)tf->event.data_size; |
3aee1200 |
1599 | |
eed2ef37 |
1600 | tf->event.offset = pos - tf->buffer.head; |
cb03932a |
1601 | |
f628823c |
1602 | if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) { |
cb03932a |
1603 | ret = ERANGE; |
1604 | goto found; |
1605 | } |
36d36c9f |
1606 | g_assert(tf->event.offset < tf->buf_size - tf->buffer.lost_size); |
3aee1200 |
1607 | |
1608 | found: |
1609 | return ret; |
1610 | |
1611 | error: |
1612 | g_error("Error in ltt_seek_next_event for tracefile %s", |
1613 | g_quark_to_string(tf->name)); |
1614 | return ENOPROTOOPT; |
6cd62ccf |
1615 | } |
1616 | |
f104d082 |
1617 | #if 0 |
3aee1200 |
1618 | /***************************************************************************** |
6cd62ccf |
1619 | *Function name |
3aee1200 |
1620 | * set_fields_offsets : set the precomputable offset of the fields |
6cd62ccf |
1621 | *Input params |
3aee1200 |
1622 | * tracefile : opened trace file |
1623 | * event_type : the event type |
6cd62ccf |
1624 | ****************************************************************************/ |
1625 | |
3aee1200 |
1626 | void set_fields_offsets(LttTracefile *tf, LttEventType *event_type) |
6cd62ccf |
1627 | { |
3aee1200 |
1628 | LttField *field = event_type->root_field; |
1629 | enum field_status fixed_root = FIELD_FIXED, fixed_parent = FIELD_FIXED; |
1630 | |
1631 | if(likely(field)) |
1632 | preset_field_type_size(tf, event_type, 0, 0, |
1633 | &fixed_root, &fixed_parent, |
1634 | field); |
1635 | |
1636 | } |
f104d082 |
1637 | #endif //0 |
1638 | |
1639 | |
1640 | /***************************************************************************** |
1641 | *Function name |
1642 | * get_alignment : Get the alignment needed for a field. |
1643 | *Input params |
f104d082 |
1644 | * field : field |
1645 | * |
1646 | * returns : The size on which it must be aligned. |
1647 | * |
1648 | ****************************************************************************/ |
3c165eaf |
1649 | #if 0 |
743e50fd |
1650 | off_t get_alignment(LttField *field) |
f104d082 |
1651 | { |
2312de30 |
1652 | LttType *type = &field->field_type; |
f104d082 |
1653 | |
1654 | switch(type->type_class) { |
1655 | case LTT_INT_FIXED: |
1656 | case LTT_UINT_FIXED: |
1657 | case LTT_POINTER: |
1658 | case LTT_CHAR: |
1659 | case LTT_UCHAR: |
1660 | case LTT_SHORT: |
1661 | case LTT_USHORT: |
1662 | case LTT_INT: |
1663 | case LTT_UINT: |
1664 | case LTT_LONG: |
1665 | case LTT_ULONG: |
1666 | case LTT_SIZE_T: |
1667 | case LTT_SSIZE_T: |
1668 | case LTT_OFF_T: |
1669 | case LTT_FLOAT: |
1670 | case LTT_ENUM: |
1671 | /* Align offset on type size */ |
83e160f2 |
1672 | g_assert(field->field_size != 0); |
f104d082 |
1673 | return field->field_size; |
1674 | break; |
1675 | case LTT_STRING: |
83e160f2 |
1676 | return 1; |
f104d082 |
1677 | break; |
1678 | case LTT_ARRAY: |
1679 | g_assert(type->fields->len == 1); |
1680 | { |
1681 | LttField *child = &g_array_index(type->fields, LttField, 0); |
743e50fd |
1682 | return get_alignment(child); |
f104d082 |
1683 | } |
1684 | break; |
1685 | case LTT_SEQUENCE: |
1686 | g_assert(type->fields->len == 2); |
1687 | { |
83e160f2 |
1688 | off_t localign = 1; |
f104d082 |
1689 | LttField *child = &g_array_index(type->fields, LttField, 0); |
1690 | |
743e50fd |
1691 | localign = max(localign, get_alignment(child)); |
f104d082 |
1692 | |
1693 | child = &g_array_index(type->fields, LttField, 1); |
743e50fd |
1694 | localign = max(localign, get_alignment(child)); |
f104d082 |
1695 | |
1696 | return localign; |
1697 | } |
1698 | break; |
1699 | case LTT_STRUCT: |
1700 | case LTT_UNION: |
1701 | { |
1702 | guint i; |
83e160f2 |
1703 | off_t localign = 1; |
f104d082 |
1704 | |
1705 | for(i=0; i<type->fields->len; i++) { |
1706 | LttField *child = &g_array_index(type->fields, LttField, i); |
743e50fd |
1707 | localign = max(localign, get_alignment(child)); |
f104d082 |
1708 | } |
1709 | return localign; |
1710 | } |
1711 | break; |
1712 | case LTT_NONE: |
1713 | default: |
1714 | g_error("get_alignment : unknown type"); |
83e160f2 |
1715 | return -1; |
f104d082 |
1716 | } |
f104d082 |
1717 | } |
1718 | |
3c165eaf |
1719 | #endif //0 |
1720 | |
f104d082 |
1721 | /***************************************************************************** |
1722 | *Function name |
1723 | * field_compute_static_size : Determine the size of fields known by their |
1724 | * sole definition. Unions, arrays and struct sizes might be known, but |
1725 | * the parser does not give that information. |
1726 | *Input params |
1727 | * tf : tracefile |
1728 | * field : field |
1729 | * |
1730 | ****************************************************************************/ |
3c165eaf |
1731 | #if 0 |
743e50fd |
1732 | void field_compute_static_size(LttFacility *fac, LttField *field) |
f104d082 |
1733 | { |
2312de30 |
1734 | LttType *type = &field->field_type; |
f104d082 |
1735 | |
1736 | switch(type->type_class) { |
1737 | case LTT_INT_FIXED: |
1738 | case LTT_UINT_FIXED: |
1739 | case LTT_POINTER: |
1740 | case LTT_CHAR: |
1741 | case LTT_UCHAR: |
1742 | case LTT_SHORT: |
1743 | case LTT_USHORT: |
1744 | case LTT_INT: |
1745 | case LTT_UINT: |
1746 | case LTT_LONG: |
1747 | case LTT_ULONG: |
1748 | case LTT_SIZE_T: |
1749 | case LTT_SSIZE_T: |
1750 | case LTT_OFF_T: |
1751 | case LTT_FLOAT: |
1752 | case LTT_ENUM: |
1753 | case LTT_STRING: |
1754 | /* nothing to do */ |
1755 | break; |
1756 | case LTT_ARRAY: |
1757 | /* note this : array type size is the number of elements in the array, |
1758 | * while array field size of the length of the array in bytes */ |
1759 | g_assert(type->fields->len == 1); |
1760 | { |
1761 | LttField *child = &g_array_index(type->fields, LttField, 0); |
743e50fd |
1762 | field_compute_static_size(fac, child); |
f104d082 |
1763 | |
1764 | if(child->field_size != 0) { |
1765 | field->field_size = type->size * child->field_size; |
1766 | field->dynamic_offsets = g_array_sized_new(FALSE, TRUE, |
1767 | sizeof(off_t), type->size); |
1768 | } else { |
1769 | field->field_size = 0; |
1770 | } |
1771 | } |
1772 | break; |
1773 | case LTT_SEQUENCE: |
1774 | g_assert(type->fields->len == 2); |
1775 | { |
2312de30 |
1776 | off_t local_offset = 0; |
f104d082 |
1777 | LttField *child = &g_array_index(type->fields, LttField, 1); |
743e50fd |
1778 | field_compute_static_size(fac, child); |
f104d082 |
1779 | field->field_size = 0; |
1780 | type->size = 0; |
1781 | if(child->field_size != 0) { |
1782 | field->dynamic_offsets = g_array_sized_new(FALSE, TRUE, |
1783 | sizeof(off_t), SEQUENCE_AVG_ELEMENTS); |
1784 | } |
1785 | } |
1786 | break; |
1787 | case LTT_STRUCT: |
1788 | case LTT_UNION: |
1789 | { |
1790 | guint i; |
1791 | for(i=0;i<type->fields->len;i++) { |
1792 | LttField *child = &g_array_index(type->fields, LttField, i); |
743e50fd |
1793 | field_compute_static_size(fac, child); |
f104d082 |
1794 | if(child->field_size != 0) { |
743e50fd |
1795 | type->size += ltt_align(type->size, get_alignment(child), |
1796 | fac->alignment); |
f104d082 |
1797 | type->size += child->field_size; |
1798 | } else { |
1799 | /* As soon as we find a child with variable size, we have |
1800 | * a variable size */ |
1801 | type->size = 0; |
1802 | break; |
1803 | } |
1804 | } |
1805 | field->field_size = type->size; |
1806 | } |
1807 | break; |
1808 | default: |
1809 | g_error("field_static_size : unknown type"); |
2312de30 |
1810 | } |
f104d082 |
1811 | |
1812 | } |
3c165eaf |
1813 | #endif //0 |
f104d082 |
1814 | |
1815 | |
1816 | /***************************************************************************** |
1817 | *Function name |
1818 | * precompute_fields_offsets : set the precomputable offset of the fields |
1819 | *Input params |
743e50fd |
1820 | * fac : facility |
f104d082 |
1821 | * field : the field |
1822 | * offset : pointer to the current offset, must be incremented |
1823 | * |
1824 | * return : 1 : found a variable length field, stop the processing. |
1825 | * 0 otherwise. |
1826 | ****************************************************************************/ |
1827 | |
3c165eaf |
1828 | #if 0 |
dd3a6d39 |
1829 | gint precompute_fields_offsets(LttFacility *fac, LttField *field, off_t *offset, gint is_compact) |
f104d082 |
1830 | { |
2312de30 |
1831 | LttType *type = &field->field_type; |
dd3a6d39 |
1832 | |
1833 | if(unlikely(is_compact)) { |
1834 | g_assert(field->field_size != 0); |
1835 | /* FIXME THIS IS A HUUUUUGE hack : |
1836 | * offset is between the compact_data field in struct LttEvent |
1837 | * and the address of the field root in the memory map. |
1838 | * ark. Both will stay at the same addresses while the event |
1839 | * is readable, so it's ok. |
1840 | */ |
1841 | field->offset_root = 0; |
1842 | field->fixed_root = FIELD_FIXED; |
1843 | return 0; |
1844 | } |
f104d082 |
1845 | |
1846 | switch(type->type_class) { |
1847 | case LTT_INT_FIXED: |
1848 | case LTT_UINT_FIXED: |
1849 | case LTT_POINTER: |
1850 | case LTT_CHAR: |
1851 | case LTT_UCHAR: |
1852 | case LTT_SHORT: |
1853 | case LTT_USHORT: |
1854 | case LTT_INT: |
1855 | case LTT_UINT: |
1856 | case LTT_LONG: |
1857 | case LTT_ULONG: |
1858 | case LTT_SIZE_T: |
1859 | case LTT_SSIZE_T: |
1860 | case LTT_OFF_T: |
1861 | case LTT_FLOAT: |
1862 | case LTT_ENUM: |
743e50fd |
1863 | g_assert(field->field_size != 0); |
f104d082 |
1864 | /* Align offset on type size */ |
743e50fd |
1865 | *offset += ltt_align(*offset, get_alignment(field), |
1866 | fac->alignment); |
f104d082 |
1867 | /* remember offset */ |
1868 | field->offset_root = *offset; |
1869 | field->fixed_root = FIELD_FIXED; |
1870 | /* Increment offset */ |
1871 | *offset += field->field_size; |
1872 | return 0; |
1873 | break; |
1874 | case LTT_STRING: |
1875 | field->offset_root = *offset; |
1876 | field->fixed_root = FIELD_FIXED; |
1877 | return 1; |
1878 | break; |
1879 | case LTT_ARRAY: |
1880 | g_assert(type->fields->len == 1); |
1881 | { |
1882 | LttField *child = &g_array_index(type->fields, LttField, 0); |
1883 | |
743e50fd |
1884 | *offset += ltt_align(*offset, get_alignment(field), |
1885 | fac->alignment); |
f104d082 |
1886 | |
1887 | /* remember offset */ |
1888 | field->offset_root = *offset; |
1889 | field->array_offset = *offset; |
1890 | field->fixed_root = FIELD_FIXED; |
1891 | |
1892 | /* Let the child be variable */ |
1893 | //precompute_fields_offsets(tf, child, offset); |
1894 | |
1895 | if(field->field_size != 0) { |
1896 | /* Increment offset */ |
1897 | /* field_size is the array size in bytes */ |
1898 | *offset += field->field_size; |
1899 | return 0; |
1900 | } else { |
1901 | return 1; |
1902 | } |
1903 | } |
1904 | break; |
1905 | case LTT_SEQUENCE: |
1906 | g_assert(type->fields->len == 2); |
1907 | { |
1908 | LttField *child; |
1909 | guint ret; |
1910 | |
743e50fd |
1911 | *offset += ltt_align(*offset, get_alignment(field), |
1912 | fac->alignment); |
f104d082 |
1913 | |
1914 | /* remember offset */ |
1915 | field->offset_root = *offset; |
1916 | field->fixed_root = FIELD_FIXED; |
1917 | |
1918 | child = &g_array_index(type->fields, LttField, 0); |
dd3a6d39 |
1919 | ret = precompute_fields_offsets(fac, child, offset, is_compact); |
f104d082 |
1920 | g_assert(ret == 0); /* Seq len cannot have variable len */ |
1921 | |
1922 | child = &g_array_index(type->fields, LttField, 1); |
743e50fd |
1923 | *offset += ltt_align(*offset, get_alignment(child), |
1924 | fac->alignment); |
f104d082 |
1925 | field->array_offset = *offset; |
743e50fd |
1926 | /* Let the child be variable. */ |
1927 | //ret = precompute_fields_offsets(fac, child, offset); |
f104d082 |
1928 | |
1929 | /* Cannot precompute fields offsets of sequence members, and has |
1930 | * variable length. */ |
1931 | return 1; |
1932 | } |
1933 | break; |
1934 | case LTT_STRUCT: |
1935 | { |
1936 | LttField *child; |
1937 | guint i; |
1938 | gint ret=0; |
1939 | |
743e50fd |
1940 | *offset += ltt_align(*offset, get_alignment(field), |
1941 | fac->alignment); |
f104d082 |
1942 | /* remember offset */ |
1943 | field->offset_root = *offset; |
1944 | field->fixed_root = FIELD_FIXED; |
1945 | |
1946 | for(i=0; i< type->fields->len; i++) { |
1947 | child = &g_array_index(type->fields, LttField, i); |
dd3a6d39 |
1948 | ret = precompute_fields_offsets(fac, child, offset, is_compact); |
f104d082 |
1949 | |
1950 | if(ret) break; |
1951 | } |
1952 | return ret; |
1953 | } |
1954 | break; |
1955 | case LTT_UNION: |
1956 | { |
1957 | LttField *child; |
1958 | guint i; |
1959 | gint ret=0; |
1960 | |
743e50fd |
1961 | *offset += ltt_align(*offset, get_alignment(field), |
1962 | fac->alignment); |
f104d082 |
1963 | /* remember offset */ |
1964 | field->offset_root = *offset; |
1965 | field->fixed_root = FIELD_FIXED; |
1966 | |
1967 | for(i=0; i< type->fields->len; i++) { |
1968 | *offset = field->offset_root; |
1969 | child = &g_array_index(type->fields, LttField, i); |
dd3a6d39 |
1970 | ret = precompute_fields_offsets(fac, child, offset, is_compact); |
f104d082 |
1971 | |
1972 | if(ret) break; |
1973 | } |
1974 | *offset = field->offset_root + field->field_size; |
1975 | return ret; |
1976 | } |
1977 | |
1978 | break; |
1979 | case LTT_NONE: |
1980 | default: |
1981 | g_error("precompute_fields_offsets : unknown type"); |
1982 | return 1; |
1983 | } |
1984 | |
1985 | } |
1986 | |
3c165eaf |
1987 | #endif //0 |
f104d082 |
1988 | |
3c165eaf |
1989 | #if 0 |
f104d082 |
1990 | /***************************************************************************** |
1991 | *Function name |
1992 | * precompute_offsets : set the precomputable offset of an event type |
1993 | *Input params |
1994 | * tf : tracefile |
1995 | * event : event type |
1996 | * |
1997 | ****************************************************************************/ |
743e50fd |
1998 | void precompute_offsets(LttFacility *fac, LttEventType *event) |
f104d082 |
1999 | { |
2000 | guint i; |
2001 | off_t offset = 0; |
2002 | gint ret; |
2003 | |
2004 | /* First, compute the size of fixed size fields. Will determine size for |
2005 | * arrays, struct and unions, which is not done by the parser */ |
2006 | for(i=0; i<event->fields->len; i++) { |
2007 | LttField *field = &g_array_index(event->fields, LttField, i); |
743e50fd |
2008 | field_compute_static_size(fac, field); |
f104d082 |
2009 | } |
2010 | |
2011 | /* Precompute all known offsets */ |
2012 | for(i=0; i<event->fields->len; i++) { |
2013 | LttField *field = &g_array_index(event->fields, LttField, i); |
dd3a6d39 |
2014 | if(event->has_compact_data && i == 0) |
2015 | ret = precompute_fields_offsets(fac, field, &offset, 1); |
2016 | else |
2017 | ret = precompute_fields_offsets(fac, field, &offset, 0); |
f104d082 |
2018 | if(ret) break; |
2019 | } |
2020 | } |
3c165eaf |
2021 | #endif //0 |
f104d082 |
2022 | |
e4eced0f |
2023 | |
bbf28e50 |
2024 | |
3aee1200 |
2025 | /***************************************************************************** |
2026 | *Function name |
2027 | * preset_field_type_size : set the fixed sizes of the field type |
2028 | *Input params |
2029 | * tf : tracefile |
2030 | * event_type : event type |
2031 | * offset_root : offset from the root |
2032 | * offset_parent : offset from the parent |
2033 | * fixed_root : Do we know a fixed offset to the root ? |
2034 | * fixed_parent : Do we know a fixed offset to the parent ? |
2035 | * field : field |
2036 | ****************************************************************************/ |
f104d082 |
2037 | |
2038 | |
2039 | |
2040 | // preset the fixed size offsets. Calculate them just like genevent-new : an |
2041 | // increment of a *to value that represents the offset from the start of the |
2042 | // event data. |
2043 | // The preset information is : offsets up to (and including) the first element |
2044 | // of variable size. All subsequent fields must be flagged "VARIABLE OFFSET". |
2045 | #if 0 |
3aee1200 |
2046 | void preset_field_type_size(LttTracefile *tf, LttEventType *event_type, |
2047 | off_t offset_root, off_t offset_parent, |
2048 | enum field_status *fixed_root, enum field_status *fixed_parent, |
2049 | LttField *field) |
2050 | { |
2051 | enum field_status local_fixed_root, local_fixed_parent; |
2052 | guint i; |
2053 | LttType *type; |
dfb73233 |
2054 | |
3aee1200 |
2055 | g_assert(field->fixed_root == FIELD_UNKNOWN); |
2056 | g_assert(field->fixed_parent == FIELD_UNKNOWN); |
2057 | g_assert(field->fixed_size == FIELD_UNKNOWN); |
dfb73233 |
2058 | |
3aee1200 |
2059 | type = field->field_type; |
2060 | |
2061 | field->fixed_root = *fixed_root; |
2062 | if(field->fixed_root == FIELD_FIXED) |
2063 | field->offset_root = offset_root; |
2064 | else |
2065 | field->offset_root = 0; |
2066 | |
2067 | field->fixed_parent = *fixed_parent; |
2068 | if(field->fixed_parent == FIELD_FIXED) |
2069 | field->offset_parent = offset_parent; |
2070 | else |
2071 | field->offset_parent = 0; |
2072 | |
2073 | size_t current_root_offset; |
2074 | size_t current_offset; |
2075 | enum field_status current_child_status, final_child_status; |
2076 | size_t max_size; |
2077 | |
2078 | switch(type->type_class) { |
83e160f2 |
2079 | case LTT_INT_FIXED: |
2080 | case LTT_UINT_FIXED: |
2081 | case LTT_CHAR: |
2082 | case LTT_UCHAR: |
2083 | case LTT_SHORT: |
2084 | case LTT_USHORT: |
3aee1200 |
2085 | case LTT_INT: |
2086 | case LTT_UINT: |
2087 | case LTT_FLOAT: |
2088 | case LTT_ENUM: |
2089 | field->field_size = ltt_type_size(tf->trace, type); |
2090 | field->fixed_size = FIELD_FIXED; |
2091 | break; |
2092 | case LTT_POINTER: |
2093 | field->field_size = (off_t)event_type->facility->pointer_size; |
2094 | field->fixed_size = FIELD_FIXED; |
2095 | break; |
2096 | case LTT_LONG: |
2097 | case LTT_ULONG: |
cb03932a |
2098 | field->field_size = (off_t)event_type->facility->long_size; |
3aee1200 |
2099 | field->fixed_size = FIELD_FIXED; |
2100 | break; |
2101 | case LTT_SIZE_T: |
2102 | case LTT_SSIZE_T: |
2103 | case LTT_OFF_T: |
2104 | field->field_size = (off_t)event_type->facility->size_t_size; |
2105 | field->fixed_size = FIELD_FIXED; |
2106 | break; |
2107 | case LTT_SEQUENCE: |
2108 | local_fixed_root = FIELD_VARIABLE; |
2109 | local_fixed_parent = FIELD_VARIABLE; |
2110 | preset_field_type_size(tf, event_type, |
2111 | 0, 0, |
2112 | &local_fixed_root, &local_fixed_parent, |
2113 | field->child[0]); |
2114 | field->fixed_size = FIELD_VARIABLE; |
2115 | field->field_size = 0; |
27304273 |
2116 | *fixed_root = FIELD_VARIABLE; |
2117 | *fixed_parent = FIELD_VARIABLE; |
3aee1200 |
2118 | break; |
2119 | case LTT_STRING: |
2120 | field->fixed_size = FIELD_VARIABLE; |
2121 | field->field_size = 0; |
27304273 |
2122 | *fixed_root = FIELD_VARIABLE; |
2123 | *fixed_parent = FIELD_VARIABLE; |
3aee1200 |
2124 | break; |
2125 | case LTT_ARRAY: |
2126 | local_fixed_root = FIELD_VARIABLE; |
2127 | local_fixed_parent = FIELD_VARIABLE; |
2128 | preset_field_type_size(tf, event_type, |
2129 | 0, 0, |
2130 | &local_fixed_root, &local_fixed_parent, |
2131 | field->child[0]); |
2132 | field->fixed_size = field->child[0]->fixed_size; |
27304273 |
2133 | if(field->fixed_size == FIELD_FIXED) { |
3aee1200 |
2134 | field->field_size = type->element_number * field->child[0]->field_size; |
27304273 |
2135 | } else { |
3aee1200 |
2136 | field->field_size = 0; |
27304273 |
2137 | *fixed_root = FIELD_VARIABLE; |
2138 | *fixed_parent = FIELD_VARIABLE; |
2139 | } |
3aee1200 |
2140 | break; |
2141 | case LTT_STRUCT: |
2142 | current_root_offset = field->offset_root; |
2143 | current_offset = 0; |
2144 | current_child_status = FIELD_FIXED; |
2145 | for(i=0;i<type->element_number;i++) { |
2146 | preset_field_type_size(tf, event_type, |
2147 | current_root_offset, current_offset, |
2148 | fixed_root, ¤t_child_status, |
2149 | field->child[i]); |
2150 | if(current_child_status == FIELD_FIXED) { |
2151 | current_root_offset += field->child[i]->field_size; |
2152 | current_offset += field->child[i]->field_size; |
2153 | } else { |
2154 | current_root_offset = 0; |
2155 | current_offset = 0; |
2156 | } |
2157 | } |
2158 | if(current_child_status != FIELD_FIXED) { |
2159 | *fixed_parent = current_child_status; |
2160 | field->field_size = 0; |
2161 | field->fixed_size = current_child_status; |
2162 | } else { |
2163 | field->field_size = current_offset; |
2164 | field->fixed_size = FIELD_FIXED; |
2165 | } |
2166 | break; |
2167 | case LTT_UNION: |
2168 | current_root_offset = field->offset_root; |
2169 | current_offset = 0; |
2170 | max_size = 0; |
2171 | final_child_status = FIELD_FIXED; |
2172 | for(i=0;i<type->element_number;i++) { |
2173 | enum field_status current_root_child_status = FIELD_FIXED; |
2174 | enum field_status current_child_status = FIELD_FIXED; |
2175 | preset_field_type_size(tf, event_type, |
2176 | current_root_offset, current_offset, |
2177 | ¤t_root_child_status, ¤t_child_status, |
2178 | field->child[i]); |
2179 | if(current_child_status != FIELD_FIXED) |
2180 | final_child_status = current_child_status; |
2181 | else |
2182 | max_size = max(max_size, field->child[i]->field_size); |
2183 | } |
2184 | if(final_child_status != FIELD_FIXED) { |
62e4e7bf |
2185 | g_error("LTTV does not support variable size fields in unions."); |
2186 | /* This will stop the application. */ |
3aee1200 |
2187 | *fixed_root = final_child_status; |
2188 | *fixed_parent = final_child_status; |
2189 | field->field_size = 0; |
2190 | field->fixed_size = current_child_status; |
2191 | } else { |
2192 | field->field_size = max_size; |
2193 | field->fixed_size = FIELD_FIXED; |
2194 | } |
2195 | break; |
83e160f2 |
2196 | case LTT_NONE: |
2197 | g_error("unexpected type NONE"); |
2198 | break; |
dfb73233 |
2199 | } |
2200 | |
6cd62ccf |
2201 | } |
f104d082 |
2202 | #endif //0 |
3aee1200 |
2203 | |
77175651 |
2204 | /***************************************************************************** |
2205 | *Function name |
2206 | * check_fields_compatibility : Check for compatibility between two fields : |
2207 | * do they use the same inner structure ? |
2208 | *Input params |
2209 | * event_type1 : event type |
2210 | * event_type2 : event type |
2211 | * field1 : field |
2212 | * field2 : field |
2213 | *Returns : 0 if identical |
2214 | * 1 if not. |
2215 | ****************************************************************************/ |
f104d082 |
2216 | // this function checks for equality of field types. Therefore, it does not use |
2217 | // per se offsets. For instance, an aligned version of a structure is |
2218 | // compatible with an unaligned version of the same structure. |
3c165eaf |
2219 | #if 0 |
f104d082 |
2220 | gint check_fields_compatibility(LttEventType *event_type1, |
2221 | LttEventType *event_type2, |
2222 | LttField *field1, LttField *field2) |
2223 | { |
2224 | guint different = 0; |
2312de30 |
2225 | LttType *type1; |
2226 | LttType *type2; |
f104d082 |
2227 | |
2228 | if(field1 == NULL) { |
2229 | if(field2 == NULL) goto end; |
2230 | else { |
2231 | different = 1; |
2232 | goto end; |
2233 | } |
2234 | } else if(field2 == NULL) { |
2235 | different = 1; |
2236 | goto end; |
2237 | } |
2238 | |
2312de30 |
2239 | type1 = &field1->field_type; |
2240 | type2 = &field2->field_type; |
f104d082 |
2241 | |
2242 | if(type1->type_class != type2->type_class) { |
2243 | different = 1; |
2244 | goto end; |
2245 | } |
62e4e7bf |
2246 | if(type1->network != type2->network) { |
2247 | different = 1; |
2248 | goto end; |
2249 | } |
f104d082 |
2250 | |
2251 | switch(type1->type_class) { |
2252 | case LTT_INT_FIXED: |
2253 | case LTT_UINT_FIXED: |
2254 | case LTT_POINTER: |
2255 | case LTT_CHAR: |
2256 | case LTT_UCHAR: |
2257 | case LTT_SHORT: |
2258 | case LTT_USHORT: |
2259 | case LTT_INT: |
2260 | case LTT_UINT: |
2261 | case LTT_LONG: |
2262 | case LTT_ULONG: |
2263 | case LTT_SIZE_T: |
2264 | case LTT_SSIZE_T: |
2265 | case LTT_OFF_T: |
2266 | case LTT_FLOAT: |
2267 | case LTT_ENUM: |
2268 | if(field1->field_size != field2->field_size) |
2269 | different = 1; |
2270 | break; |
2271 | case LTT_STRING: |
2272 | break; |
2273 | case LTT_ARRAY: |
2274 | { |
2275 | LttField *child1 = &g_array_index(type1->fields, LttField, 0); |
2276 | LttField *child2 = &g_array_index(type2->fields, LttField, 0); |
2277 | |
2278 | if(type1->size != type2->size) |
2279 | different = 1; |
2280 | if(check_fields_compatibility(event_type1, event_type2, child1, child2)) |
2281 | different = 1; |
2282 | } |
2283 | break; |
2284 | case LTT_SEQUENCE: |
2285 | { |
2286 | LttField *child1 = &g_array_index(type1->fields, LttField, 1); |
2287 | LttField *child2 = &g_array_index(type2->fields, LttField, 1); |
2288 | |
2289 | if(check_fields_compatibility(event_type1, event_type2, child1, child2)) |
2290 | different = 1; |
2291 | } |
2292 | break; |
2293 | case LTT_STRUCT: |
2294 | case LTT_UNION: |
2295 | { |
2296 | LttField *child; |
2297 | guint i; |
2298 | |
2299 | if(type1->fields->len != type2->fields->len) { |
2300 | different = 1; |
2301 | goto end; |
2302 | } |
2303 | |
2304 | for(i=0; i< type1->fields->len; i++) { |
2312de30 |
2305 | LttField *child1; |
2306 | LttField *child2; |
f104d082 |
2307 | child1 = &g_array_index(type1->fields, LttField, i); |
2308 | child2 = &g_array_index(type2->fields, LttField, i); |
2309 | different = check_fields_compatibility(event_type1, |
2310 | event_type2, child1, child2); |
2311 | |
2312 | if(different) break; |
2313 | } |
2314 | } |
2315 | break; |
2316 | case LTT_NONE: |
2317 | default: |
dd3a6d39 |
2318 | g_error("check_fields_compatibility : unknown type"); |
f104d082 |
2319 | } |
2320 | |
2321 | end: |
2322 | return different; |
2323 | } |
3c165eaf |
2324 | #endif //0 |
f104d082 |
2325 | |
2326 | #if 0 |
77175651 |
2327 | gint check_fields_compatibility(LttEventType *event_type1, |
2328 | LttEventType *event_type2, |
2329 | LttField *field1, LttField *field2) |
2330 | { |
2331 | guint different = 0; |
77175651 |
2332 | guint i; |
2333 | LttType *type1; |
2334 | LttType *type2; |
2335 | |
2336 | if(field1 == NULL) { |
2337 | if(field2 == NULL) goto end; |
2338 | else { |
2339 | different = 1; |
2340 | goto end; |
2341 | } |
2342 | } else if(field2 == NULL) { |
2343 | different = 1; |
2344 | goto end; |
2345 | } |
2346 | |
2347 | g_assert(field1->fixed_root != FIELD_UNKNOWN); |
2348 | g_assert(field2->fixed_root != FIELD_UNKNOWN); |
2349 | g_assert(field1->fixed_parent != FIELD_UNKNOWN); |
2350 | g_assert(field2->fixed_parent != FIELD_UNKNOWN); |
2351 | g_assert(field1->fixed_size != FIELD_UNKNOWN); |
2352 | g_assert(field2->fixed_size != FIELD_UNKNOWN); |
2353 | |
2354 | type1 = field1->field_type; |
2355 | type2 = field2->field_type; |
2356 | |
77175651 |
2357 | if(type1->type_class != type2->type_class) { |
2358 | different = 1; |
2359 | goto end; |
2360 | } |
2361 | if(type1->element_name != type2->element_name) { |
2362 | different = 1; |
2363 | goto end; |
2364 | } |
2365 | |
2366 | switch(type1->type_class) { |
83e160f2 |
2367 | case LTT_INT_FIXED: |
2368 | case LTT_UINT_FIXED: |
2369 | case LTT_POINTER: |
2370 | case LTT_CHAR: |
2371 | case LTT_UCHAR: |
2372 | case LTT_SHORT: |
2373 | case LTT_USHORT: |
77175651 |
2374 | case LTT_INT: |
2375 | case LTT_UINT: |
2376 | case LTT_FLOAT: |
2377 | case LTT_POINTER: |
2378 | case LTT_LONG: |
2379 | case LTT_ULONG: |
2380 | case LTT_SIZE_T: |
2381 | case LTT_SSIZE_T: |
2382 | case LTT_OFF_T: |
2383 | if(field1->field_size != field2->field_size) { |
2384 | different = 1; |
2385 | goto end; |
2386 | } |
2387 | break; |
2388 | case LTT_ENUM: |
2389 | if(type1->element_number != type2->element_number) { |
2390 | different = 1; |
2391 | goto end; |
2392 | } |
2393 | for(i=0;i<type1->element_number;i++) { |
2394 | if(type1->enum_strings[i] != type2->enum_strings[i]) { |
2395 | different = 1; |
2396 | goto end; |
2397 | } |
2398 | } |
2399 | break; |
2400 | case LTT_SEQUENCE: |
2401 | /* Two elements : size and child */ |
2402 | g_assert(type1->element_number != type2->element_number); |
2403 | for(i=0;i<type1->element_number;i++) { |
2404 | if(check_fields_compatibility(event_type1, event_type2, |
2405 | field1->child[0], field2->child[0])) { |
2406 | different = 1; |
2407 | goto end; |
2408 | } |
2409 | } |
2410 | break; |
2411 | case LTT_STRING: |
2412 | break; |
2413 | case LTT_ARRAY: |
2414 | if(field1->field_size != field2->field_size) { |
2415 | different = 1; |
2416 | goto end; |
2417 | } |
2418 | /* Two elements : size and child */ |
2419 | g_assert(type1->element_number != type2->element_number); |
2420 | for(i=0;i<type1->element_number;i++) { |
2421 | if(check_fields_compatibility(event_type1, event_type2, |
2422 | field1->child[0], field2->child[0])) { |
2423 | different = 1; |
2424 | goto end; |
2425 | } |
2426 | } |
2427 | break; |
2428 | case LTT_STRUCT: |
2429 | case LTT_UNION: |
2430 | if(type1->element_number != type2->element_number) { |
2431 | different = 1; |
2432 | break; |
2433 | } |
2434 | for(i=0;i<type1->element_number;i++) { |
2435 | if(check_fields_compatibility(event_type1, event_type2, |
2436 | field1->child[0], field2->child[0])) { |
2437 | different = 1; |
2438 | goto end; |
2439 | } |
2440 | } |
2441 | break; |
2442 | } |
2443 | end: |
2444 | return different; |
2445 | } |
3aee1200 |
2446 | #endif //0 |
6cd62ccf |
2447 | |
f104d082 |
2448 | |
6cd62ccf |
2449 | /***************************************************************************** |
2450 | *Function name |
eed2ef37 |
2451 | * ltt_get_int : get an integer number |
6cd62ccf |
2452 | *Input params |
3aee1200 |
2453 | * reverse_byte_order: must we reverse the byte order ? |
6cd62ccf |
2454 | * size : the size of the integer |
3aee1200 |
2455 | * ptr : the data pointer |
6cd62ccf |
2456 | *Return value |
cf74a6f1 |
2457 | * gint64 : a 64 bits integer |
6cd62ccf |
2458 | ****************************************************************************/ |
2459 | |
eed2ef37 |
2460 | gint64 ltt_get_int(gboolean reverse_byte_order, gint size, void *data) |
6cd62ccf |
2461 | { |
3aee1200 |
2462 | gint64 val; |
cf74a6f1 |
2463 | |
2464 | switch(size) { |
3aee1200 |
2465 | case 1: val = *((gint8*)data); break; |
2466 | case 2: val = ltt_get_int16(reverse_byte_order, data); break; |
2467 | case 4: val = ltt_get_int32(reverse_byte_order, data); break; |
2468 | case 8: val = ltt_get_int64(reverse_byte_order, data); break; |
2469 | default: val = ltt_get_int64(reverse_byte_order, data); |
2470 | g_critical("get_int : integer size %d unknown", size); |
cf74a6f1 |
2471 | break; |
2472 | } |
2473 | |
3aee1200 |
2474 | return val; |
6cd62ccf |
2475 | } |
3aee1200 |
2476 | |
6cd62ccf |
2477 | /***************************************************************************** |
2478 | *Function name |
eed2ef37 |
2479 | * ltt_get_uint : get an unsigned integer number |
6cd62ccf |
2480 | *Input params |
3aee1200 |
2481 | * reverse_byte_order: must we reverse the byte order ? |
2482 | * size : the size of the integer |
2483 | * ptr : the data pointer |
2484 | *Return value |
2485 | * guint64 : a 64 bits unsigned integer |
6cd62ccf |
2486 | ****************************************************************************/ |
2487 | |
eed2ef37 |
2488 | guint64 ltt_get_uint(gboolean reverse_byte_order, gint size, void *data) |
6cd62ccf |
2489 | { |
3aee1200 |
2490 | guint64 val; |
2491 | |
2492 | switch(size) { |
2493 | case 1: val = *((gint8*)data); break; |
2494 | case 2: val = ltt_get_uint16(reverse_byte_order, data); break; |
2495 | case 4: val = ltt_get_uint32(reverse_byte_order, data); break; |
2496 | case 8: val = ltt_get_uint64(reverse_byte_order, data); break; |
2497 | default: val = ltt_get_uint64(reverse_byte_order, data); |
2498 | g_critical("get_uint : unsigned integer size %d unknown", |
2499 | size); |
2500 | break; |
2501 | } |
2502 | |
2503 | return val; |
6cd62ccf |
2504 | } |
3aee1200 |
2505 | |
2506 | |
a5dcde2f |
2507 | /* get the node name of the system */ |
2508 | |
2509 | char * ltt_trace_system_description_node_name (LttSystemDescription * s) |
2510 | { |
2511 | return s->node_name; |
2512 | } |
2513 | |
2514 | |
2515 | /* get the domain name of the system */ |
2516 | |
2517 | char * ltt_trace_system_description_domain_name (LttSystemDescription * s) |
2518 | { |
2519 | return s->domain_name; |
2520 | } |
2521 | |
2522 | |
2523 | /* get the description of the system */ |
2524 | |
2525 | char * ltt_trace_system_description_description (LttSystemDescription * s) |
2526 | { |
2527 | return s->description; |
2528 | } |
2529 | |
2530 | |
bf33dd50 |
2531 | /* get the NTP corrected start time of the trace */ |
7bd563ec |
2532 | LttTime ltt_trace_start_time(LttTrace *t) |
a5dcde2f |
2533 | { |
7bd563ec |
2534 | return t->start_time; |
a5dcde2f |
2535 | } |
2536 | |
bf33dd50 |
2537 | /* get the monotonic start time of the trace */ |
2538 | LttTime ltt_trace_start_time_monotonic(LttTrace *t) |
2539 | { |
2540 | return t->start_time_from_tsc; |
2541 | } |
2542 | |
43ed82b5 |
2543 | static __attribute__ ((__unused__)) LttTracefile *ltt_tracefile_new() |
18206708 |
2544 | { |
afd57a3c |
2545 | LttTracefile *tf; |
2546 | tf = g_new(LttTracefile, 1); |
2547 | tf->event.tracefile = tf; |
2548 | return tf; |
18206708 |
2549 | } |
2550 | |
43ed82b5 |
2551 | static __attribute__ ((__unused__)) void ltt_tracefile_destroy(LttTracefile *tf) |
18206708 |
2552 | { |
2553 | g_free(tf); |
2554 | } |
2555 | |
43ed82b5 |
2556 | static __attribute__ ((__unused__)) void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src) |
18206708 |
2557 | { |
2558 | *dest = *src; |
2559 | } |
2560 | |
3aee1200 |
2561 | /* Before library loading... */ |
2562 | |
8655430b |
2563 | static __attribute__((constructor)) void init(void) |
3aee1200 |
2564 | { |
750eb11a |
2565 | LTT_TRACEFILE_NAME_METADATA = g_quark_from_string("metadata"); |
3aee1200 |
2566 | } |