449cb9d7 |
1 | /* This file is part of the Linux Trace Toolkit viewer |
3aee1200 |
2 | * Copyright (C) 2005 Mathieu Desnoyers |
449cb9d7 |
3 | * |
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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, |
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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> |
3aee1200 |
35 | #include <malloc.h> |
36 | #include <sys/mman.h> |
dd3a6d39 |
37 | #include <string.h> |
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38 | |
ef35d837 |
39 | // For realpath |
40 | #include <limits.h> |
41 | #include <stdlib.h> |
42 | |
43 | |
a5dcde2f |
44 | #include <ltt/ltt.h> |
45 | #include "ltt-private.h" |
963b5f2d |
46 | #include <ltt/trace.h> |
c02ea99f |
47 | #include <ltt/event.h> |
1a2ceb63 |
48 | #include <ltt/ltt-types.h> |
bb38a290 |
49 | #include <ltt/marker.h> |
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50 | |
2fc874ab |
51 | /* Tracefile names used in this file */ |
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52 | |
2fc874ab |
53 | GQuark LTT_TRACEFILE_NAME_METADATA; |
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54 | |
86005ded |
55 | #ifndef g_open |
56 | #define g_open open |
57 | #endif |
58 | |
59 | |
51b5991e |
60 | #define __UNUSED__ __attribute__((__unused__)) |
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61 | |
a1062ddd |
62 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
3aee1200 |
63 | |
64 | #ifndef g_debug |
a1062ddd |
65 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
3aee1200 |
66 | #endif |
a1062ddd |
67 | |
45e14832 |
68 | #define g_close close |
8959a0c8 |
69 | |
b77d1b57 |
70 | /* Those macros must be called from within a function where page_size is a known |
71 | * variable */ |
72 | #define PAGE_MASK (~(page_size-1)) |
73 | #define PAGE_ALIGN(addr) (((addr)+page_size-1)&PAGE_MASK) |
74 | |
9c731a50 |
75 | LttTrace *father_trace = NULL; |
76 | |
6cd62ccf |
77 | /* set the offset of the fields belonging to the event, |
78 | need the information of the archecture */ |
f104d082 |
79 | //void set_fields_offsets(LttTracefile *tf, LttEventType *event_type); |
eed2ef37 |
80 | //size_t get_fields_offsets(LttTracefile *tf, LttEventType *event_type, void *data); |
6cd62ccf |
81 | |
2fc874ab |
82 | #if 0 |
3aee1200 |
83 | /* get the size of the field type according to |
84 | * The facility size information. */ |
85 | static inline void preset_field_type_size(LttTracefile *tf, |
86 | LttEventType *event_type, |
87 | off_t offset_root, off_t offset_parent, |
88 | enum field_status *fixed_root, enum field_status *fixed_parent, |
89 | LttField *field); |
f104d082 |
90 | #endif //0 |
6cd62ccf |
91 | |
3aee1200 |
92 | /* map a fixed size or a block information from the file (fd) */ |
93 | static gint map_block(LttTracefile * tf, guint block_num); |
94 | |
95 | /* calculate nsec per cycles for current block */ |
791dffa6 |
96 | #if 0 |
97 | static guint32 calc_nsecs_per_cycle(LttTracefile * t); |
98 | static guint64 cycles_2_ns(LttTracefile *tf, guint64 cycles); |
99 | #endif //0 |
6cd62ccf |
100 | |
3aee1200 |
101 | /* go to the next event */ |
102 | static int ltt_seek_next_event(LttTracefile *tf); |
6cd62ccf |
103 | |
3c165eaf |
104 | static int open_tracefiles(LttTrace *trace, gchar *root_path, |
105 | gchar *relative_path); |
2fc874ab |
106 | static int ltt_process_metadata_tracefile(LttTracefile *tf); |
3c165eaf |
107 | static void ltt_tracefile_time_span_get(LttTracefile *tf, |
108 | LttTime *start, LttTime *end); |
109 | static void group_time_span_get(GQuark name, gpointer data, gpointer user_data); |
110 | static gint map_block(LttTracefile * tf, guint block_num); |
3c165eaf |
111 | static void ltt_update_event_size(LttTracefile *tf); |
91f8d488 |
112 | |
113 | /* Enable event debugging */ |
114 | static int a_event_debug = 0; |
115 | |
116 | void ltt_event_debug(int state) |
117 | { |
118 | a_event_debug = state; |
119 | } |
120 | |
b7576a11 |
121 | /* trace can be NULL |
122 | * |
123 | * Return value : 0 success, 1 bad tracefile |
124 | */ |
64dd41a5 |
125 | static int parse_trace_header(ltt_subbuffer_header_t *header, |
126 | LttTracefile *tf, LttTrace *t) |
b7576a11 |
127 | { |
64dd41a5 |
128 | if (header->magic_number == LTT_MAGIC_NUMBER) |
b7576a11 |
129 | tf->reverse_bo = 0; |
64dd41a5 |
130 | else if(header->magic_number == LTT_REV_MAGIC_NUMBER) |
b7576a11 |
131 | tf->reverse_bo = 1; |
132 | else /* invalid magic number, bad tracefile ! */ |
133 | return 1; |
64dd41a5 |
134 | |
135 | if(t) { |
136 | t->ltt_major_version = header->major_version; |
137 | t->ltt_minor_version = header->minor_version; |
138 | t->arch_size = header->arch_size; |
139 | } |
140 | tf->alignment = header->alignment; |
141 | |
b7576a11 |
142 | /* Get float byte order : might be different from int byte order |
143 | * (or is set to 0 if the trace has no float (kernel trace)) */ |
64dd41a5 |
144 | tf->float_word_order = 0; |
b7576a11 |
145 | |
64dd41a5 |
146 | switch(header->major_version) { |
b7576a11 |
147 | case 0: |
2fc874ab |
148 | case 1: |
3c165eaf |
149 | g_warning("Unsupported trace version : %hhu.%hhu", |
64dd41a5 |
150 | header->major_version, header->minor_version); |
3c165eaf |
151 | return 1; |
152 | break; |
2fc874ab |
153 | case 2: |
64dd41a5 |
154 | switch(header->minor_version) { |
426f6149 |
155 | case 2: |
b7576a11 |
156 | { |
426f6149 |
157 | struct ltt_subbuffer_header_2_2 *vheader = header; |
1550fba6 |
158 | tf->buffer_header_size = ltt_subbuffer_header_size(); |
64dd41a5 |
159 | tf->tscbits = 27; |
160 | tf->eventbits = 5; |
2fc874ab |
161 | tf->tsc_mask = ((1ULL << tf->tscbits) - 1); |
162 | tf->tsc_mask_next_bit = (1ULL << tf->tscbits); |
163 | |
e939e5b2 |
164 | if(t) { |
165 | t->start_freq = ltt_get_uint64(LTT_GET_BO(tf), |
166 | &vheader->start_freq); |
a3999b49 |
167 | t->freq_scale = ltt_get_uint32(LTT_GET_BO(tf), |
168 | &vheader->freq_scale); |
9c731a50 |
169 | if(father_trace) { |
170 | t->start_freq = father_trace->start_freq; |
171 | t->freq_scale = father_trace->freq_scale; |
64dd41a5 |
172 | } else { |
9c731a50 |
173 | father_trace = t; |
174 | } |
e939e5b2 |
175 | t->start_tsc = ltt_get_uint64(LTT_GET_BO(tf), |
64dd41a5 |
176 | &vheader->cycle_count_begin); |
177 | t->start_monotonic = 0; |
e939e5b2 |
178 | t->start_time.tv_sec = ltt_get_uint64(LTT_GET_BO(tf), |
179 | &vheader->start_time_sec); |
180 | t->start_time.tv_nsec = ltt_get_uint64(LTT_GET_BO(tf), |
181 | &vheader->start_time_usec); |
182 | t->start_time.tv_nsec *= 1000; /* microsec to nanosec */ |
183 | |
184 | t->start_time_from_tsc = ltt_time_from_uint64( |
c7f86478 |
185 | (double)t->start_tsc |
d0e3122a |
186 | * 1000000000.0 * tf->trace->freq_scale |
62e4e7bf |
187 | / (double)t->start_freq); |
e939e5b2 |
188 | } |
189 | } |
190 | break; |
b7576a11 |
191 | default: |
986e2a7c |
192 | g_warning("Unsupported trace version : %hhu.%hhu", |
64dd41a5 |
193 | header->major_version, header->minor_version); |
b7576a11 |
194 | return 1; |
195 | } |
196 | break; |
b7576a11 |
197 | default: |
198 | g_warning("Unsupported trace version : %hhu.%hhu", |
64dd41a5 |
199 | header->major_version, header->minor_version); |
b7576a11 |
200 | return 1; |
201 | } |
b7576a11 |
202 | return 0; |
203 | } |
204 | |
205 | |
206 | |
6cd62ccf |
207 | /***************************************************************************** |
208 | *Function name |
963b5f2d |
209 | * ltt_tracefile_open : open a trace file, construct a LttTracefile |
6cd62ccf |
210 | *Input params |
963b5f2d |
211 | * t : the trace containing the tracefile |
212 | * fileName : path name of the trace file |
3aee1200 |
213 | * tf : the tracefile structure |
6cd62ccf |
214 | *Return value |
3aee1200 |
215 | * : 0 for success, -1 otherwise. |
6cd62ccf |
216 | ****************************************************************************/ |
217 | |
8655430b |
218 | static gint ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf) |
6cd62ccf |
219 | { |
963b5f2d |
220 | struct stat lTDFStat; /* Trace data file status */ |
64dd41a5 |
221 | ltt_subbuffer_header_t *header; |
b77d1b57 |
222 | int page_size = getpagesize(); |
6cd62ccf |
223 | |
224 | //open the file |
d3d34f49 |
225 | tf->long_name = g_quark_from_string(fileName); |
963b5f2d |
226 | tf->trace = t; |
3865ea09 |
227 | tf->fd = open(fileName, O_RDONLY); |
6cd62ccf |
228 | if(tf->fd < 0){ |
2a74fbf4 |
229 | g_warning("Unable to open input data file %s\n", fileName); |
3aee1200 |
230 | goto end; |
6cd62ccf |
231 | } |
232 | |
233 | // Get the file's status |
234 | if(fstat(tf->fd, &lTDFStat) < 0){ |
2a74fbf4 |
235 | g_warning("Unable to get the status of the input data file %s\n", fileName); |
3aee1200 |
236 | goto close_file; |
6cd62ccf |
237 | } |
238 | |
239 | // Is the file large enough to contain a trace |
823820eb |
240 | if(lTDFStat.st_size < |
1550fba6 |
241 | (off_t)(ltt_subbuffer_header_size())){ |
8710c6c7 |
242 | g_print("The input data file %s does not contain a trace\n", fileName); |
3aee1200 |
243 | goto close_file; |
244 | } |
245 | |
246 | /* Temporarily map the buffer start header to get trace information */ |
247 | /* Multiple of pages aligned head */ |
b77d1b57 |
248 | tf->buffer.head = mmap(0, |
1550fba6 |
249 | PAGE_ALIGN(ltt_subbuffer_header_size()), PROT_READ, |
3aee1200 |
250 | MAP_PRIVATE, tf->fd, 0); |
3865ea09 |
251 | if(tf->buffer.head == MAP_FAILED) { |
3aee1200 |
252 | perror("Error in allocating memory for buffer of tracefile"); |
253 | goto close_file; |
6cd62ccf |
254 | } |
f64fedd7 |
255 | g_assert( ( (gulong)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
3aee1200 |
256 | |
64dd41a5 |
257 | header = (ltt_subbuffer_header_t *)tf->buffer.head; |
6cd62ccf |
258 | |
64dd41a5 |
259 | if(parse_trace_header(header, tf, NULL)) { |
51551c6f |
260 | g_warning("parse_trace_header error"); |
261 | goto unmap_file; |
262 | } |
3aee1200 |
263 | |
6cd62ccf |
264 | //store the size of the file |
265 | tf->file_size = lTDFStat.st_size; |
f628823c |
266 | tf->buf_size = ltt_get_uint32(LTT_GET_BO(tf), &header->buf_size); |
267 | tf->num_blocks = tf->file_size / tf->buf_size; |
426f6149 |
268 | tf->events_lost = 0; |
269 | tf->subbuf_corrupt = 0; |
f628823c |
270 | |
271 | if(munmap(tf->buffer.head, |
1550fba6 |
272 | PAGE_ALIGN(ltt_subbuffer_header_size()))) { |
f628823c |
273 | g_warning("unmap size : %u\n", |
1550fba6 |
274 | PAGE_ALIGN(ltt_subbuffer_header_size())); |
f628823c |
275 | perror("munmap error"); |
276 | g_assert(0); |
277 | } |
3aee1200 |
278 | tf->buffer.head = NULL; |
6cd62ccf |
279 | |
963b5f2d |
280 | //read the first block |
3aee1200 |
281 | if(map_block(tf,0)) { |
282 | perror("Cannot map block for tracefile"); |
283 | goto close_file; |
284 | } |
285 | |
286 | return 0; |
6cd62ccf |
287 | |
3aee1200 |
288 | /* Error */ |
289 | unmap_file: |
f628823c |
290 | if(munmap(tf->buffer.head, |
1550fba6 |
291 | PAGE_ALIGN(ltt_subbuffer_header_size()))) { |
f628823c |
292 | g_warning("unmap size : %u\n", |
1550fba6 |
293 | PAGE_ALIGN(ltt_subbuffer_header_size())); |
f628823c |
294 | perror("munmap error"); |
295 | g_assert(0); |
296 | } |
3aee1200 |
297 | close_file: |
3865ea09 |
298 | close(tf->fd); |
3aee1200 |
299 | end: |
300 | return -1; |
6cd62ccf |
301 | } |
302 | |
6cd62ccf |
303 | |
304 | /***************************************************************************** |
305 | *Function name |
963b5f2d |
306 | * ltt_tracefile_close: close a trace file, |
6cd62ccf |
307 | *Input params |
963b5f2d |
308 | * t : tracefile which will be closed |
6cd62ccf |
309 | ****************************************************************************/ |
310 | |
8655430b |
311 | static void ltt_tracefile_close(LttTracefile *t) |
6cd62ccf |
312 | { |
f628823c |
313 | int page_size = getpagesize(); |
314 | |
3aee1200 |
315 | if(t->buffer.head != NULL) |
f628823c |
316 | if(munmap(t->buffer.head, PAGE_ALIGN(t->buf_size))) { |
317 | g_warning("unmap size : %u\n", |
318 | PAGE_ALIGN(t->buf_size)); |
319 | perror("munmap error"); |
320 | g_assert(0); |
321 | } |
322 | |
3865ea09 |
323 | close(t->fd); |
963b5f2d |
324 | } |
6cd62ccf |
325 | |
8d1e6362 |
326 | /**************************************************************************** |
327 | * get_absolute_pathname |
803229fa |
328 | * |
8d1e6362 |
329 | * return the unique pathname in the system |
330 | * |
ef35d837 |
331 | * MD : Fixed this function so it uses realpath, dealing well with |
332 | * forgotten cases (.. were not used correctly before). |
803229fa |
333 | * |
963b5f2d |
334 | ****************************************************************************/ |
45e14832 |
335 | void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname) |
9f797243 |
336 | { |
9f797243 |
337 | abs_pathname[0] = '\0'; |
803229fa |
338 | |
2fc874ab |
339 | if (realpath(pathname, abs_pathname) != NULL) |
ef35d837 |
340 | return; |
341 | else |
342 | { |
8d1e6362 |
343 | /* error, return the original path unmodified */ |
ef35d837 |
344 | strcpy(abs_pathname, pathname); |
9f797243 |
345 | return; |
346 | } |
ef35d837 |
347 | return; |
9f797243 |
348 | } |
349 | |
3aee1200 |
350 | /* Search for something like : .*_.* |
351 | * |
352 | * The left side is the name, the right side is the number. |
353 | */ |
354 | |
8655430b |
355 | static int get_tracefile_name_number(gchar *raw_name, |
3aee1200 |
356 | GQuark *name, |
ae3d0f50 |
357 | guint *num, |
f64fedd7 |
358 | gulong *tid, |
359 | gulong *pgid, |
62e4e7bf |
360 | guint64 *creation) |
6cd62ccf |
361 | { |
3aee1200 |
362 | guint raw_name_len = strlen(raw_name); |
363 | gchar char_name[PATH_MAX]; |
3aee1200 |
364 | int i; |
365 | int underscore_pos; |
366 | long int cpu_num; |
367 | gchar *endptr; |
62e4e7bf |
368 | gchar *tmpptr; |
3aee1200 |
369 | |
370 | for(i=raw_name_len-1;i>=0;i--) { |
371 | if(raw_name[i] == '_') break; |
372 | } |
ae3d0f50 |
373 | if(i==-1) { /* Either not found or name length is 0 */ |
62e4e7bf |
374 | /* This is a userspace tracefile */ |
375 | strncpy(char_name, raw_name, raw_name_len); |
376 | char_name[raw_name_len] = '\0'; |
377 | *name = g_quark_from_string(char_name); |
378 | *num = 0; /* unknown cpu */ |
379 | for(i=0;i<raw_name_len;i++) { |
380 | if(raw_name[i] == '/') { |
381 | break; |
382 | } |
383 | } |
384 | i++; |
385 | for(;i<raw_name_len;i++) { |
386 | if(raw_name[i] == '/') { |
387 | break; |
388 | } |
389 | } |
390 | i++; |
391 | for(;i<raw_name_len;i++) { |
392 | if(raw_name[i] == '-') { |
393 | break; |
394 | } |
395 | } |
396 | if(i == raw_name_len) return -1; |
397 | i++; |
398 | tmpptr = &raw_name[i]; |
399 | for(;i<raw_name_len;i++) { |
400 | if(raw_name[i] == '.') { |
401 | raw_name[i] = ' '; |
402 | break; |
403 | } |
404 | } |
405 | *tid = strtoul(tmpptr, &endptr, 10); |
406 | if(endptr == tmpptr) |
407 | return -1; /* No digit */ |
408 | if(*tid == ULONG_MAX) |
409 | return -1; /* underflow / overflow */ |
410 | i++; |
411 | tmpptr = &raw_name[i]; |
412 | for(;i<raw_name_len;i++) { |
413 | if(raw_name[i] == '.') { |
414 | raw_name[i] = ' '; |
415 | break; |
416 | } |
417 | } |
418 | *pgid = strtoul(tmpptr, &endptr, 10); |
419 | if(endptr == tmpptr) |
420 | return -1; /* No digit */ |
421 | if(*pgid == ULONG_MAX) |
422 | return -1; /* underflow / overflow */ |
423 | i++; |
424 | tmpptr = &raw_name[i]; |
425 | *creation = strtoull(tmpptr, &endptr, 10); |
426 | if(endptr == tmpptr) |
427 | return -1; /* No digit */ |
428 | if(*creation == G_MAXUINT64) |
429 | return -1; /* underflow / overflow */ |
430 | } else { |
431 | underscore_pos = i; |
432 | |
433 | cpu_num = strtol(raw_name+underscore_pos+1, &endptr, 10); |
434 | |
435 | if(endptr == raw_name+underscore_pos+1) |
436 | return -1; /* No digit */ |
437 | if(cpu_num == LONG_MIN || cpu_num == LONG_MAX) |
438 | return -1; /* underflow / overflow */ |
439 | |
440 | strncpy(char_name, raw_name, underscore_pos); |
441 | char_name[underscore_pos] = '\0'; |
442 | |
443 | *name = g_quark_from_string(char_name); |
444 | *num = cpu_num; |
445 | } |
69bd59ed |
446 | |
b333a76b |
447 | |
3aee1200 |
448 | return 0; |
449 | } |
963b5f2d |
450 | |
3aee1200 |
451 | |
3865ea09 |
452 | GData **ltt_trace_get_tracefiles_groups(LttTrace *trace) |
77175651 |
453 | { |
3865ea09 |
454 | return &trace->tracefiles; |
77175651 |
455 | } |
456 | |
457 | |
3865ea09 |
458 | void compute_tracefile_group(GQuark key_id, |
459 | GArray *group, |
460 | struct compute_tracefile_group_args *args) |
77175651 |
461 | { |
462 | int i; |
463 | LttTracefile *tf; |
464 | |
465 | for(i=0; i<group->len; i++) { |
466 | tf = &g_array_index (group, LttTracefile, i); |
467 | if(tf->cpu_online) |
3865ea09 |
468 | args->func(tf, args->func_args); |
77175651 |
469 | } |
470 | } |
471 | |
472 | |
8655430b |
473 | static void ltt_tracefile_group_destroy(gpointer data) |
3aee1200 |
474 | { |
475 | GArray *group = (GArray *)data; |
476 | int i; |
477 | LttTracefile *tf; |
478 | |
479 | for(i=0; i<group->len; i++) { |
480 | tf = &g_array_index (group, LttTracefile, i); |
481 | if(tf->cpu_online) |
482 | ltt_tracefile_close(tf); |
483 | } |
484 | g_array_free(group, TRUE); |
6cd62ccf |
485 | } |
486 | |
8655430b |
487 | static gboolean ltt_tracefile_group_has_cpu_online(gpointer data) |
49bf71b5 |
488 | { |
3aee1200 |
489 | GArray *group = (GArray *)data; |
490 | int i; |
491 | LttTracefile *tf; |
492 | |
493 | for(i=0; i<group->len; i++) { |
494 | tf = &g_array_index (group, LttTracefile, i); |
3c165eaf |
495 | if(tf->cpu_online) |
496 | return 1; |
3aee1200 |
497 | } |
498 | return 0; |
49bf71b5 |
499 | } |
500 | |
501 | |
3aee1200 |
502 | /* Open each tracefile under a specific directory. Put them in a |
503 | * GData : permits to access them using their tracefile group pathname. |
504 | * i.e. access control/modules tracefile group by index : |
505 | * "control/module". |
3865ea09 |
506 | * |
507 | * relative path is the path relative to the trace root |
508 | * root path is the full path |
3aee1200 |
509 | * |
4a55f63e |
510 | * A tracefile group is simply an array where all the per cpu tracefiles sit. |
3aee1200 |
511 | */ |
512 | |
8655430b |
513 | static int open_tracefiles(LttTrace *trace, gchar *root_path, gchar *relative_path) |
f7afe191 |
514 | { |
62e4e7bf |
515 | DIR *dir = opendir(root_path); |
516 | struct dirent *entry; |
517 | struct stat stat_buf; |
518 | int ret; |
3865ea09 |
519 | |
62e4e7bf |
520 | gchar path[PATH_MAX]; |
521 | int path_len; |
522 | gchar *path_ptr; |
3aee1200 |
523 | |
3865ea09 |
524 | int rel_path_len; |
69bd59ed |
525 | gchar rel_path[PATH_MAX]; |
526 | gchar *rel_path_ptr; |
cb03932a |
527 | LttTracefile tmp_tf; |
3865ea09 |
528 | |
62e4e7bf |
529 | if(dir == NULL) { |
530 | perror(root_path); |
531 | return ENOENT; |
532 | } |
3aee1200 |
533 | |
62e4e7bf |
534 | strncpy(path, root_path, PATH_MAX-1); |
535 | path_len = strlen(path); |
536 | path[path_len] = '/'; |
537 | path_len++; |
538 | path_ptr = path + path_len; |
3aee1200 |
539 | |
3865ea09 |
540 | strncpy(rel_path, relative_path, PATH_MAX-1); |
541 | rel_path_len = strlen(rel_path); |
542 | rel_path[rel_path_len] = '/'; |
543 | rel_path_len++; |
544 | rel_path_ptr = rel_path + rel_path_len; |
545 | |
62e4e7bf |
546 | while((entry = readdir(dir)) != NULL) { |
547 | |
548 | if(entry->d_name[0] == '.') continue; |
549 | |
550 | strncpy(path_ptr, entry->d_name, PATH_MAX - path_len); |
551 | strncpy(rel_path_ptr, entry->d_name, PATH_MAX - rel_path_len); |
552 | |
553 | ret = stat(path, &stat_buf); |
554 | if(ret == -1) { |
555 | perror(path); |
556 | continue; |
557 | } |
558 | |
559 | g_debug("Tracefile file or directory : %s\n", path); |
560 | |
fe452434 |
561 | // if(strcmp(rel_path, "/eventdefs") == 0) continue; |
74a588bb |
562 | |
62e4e7bf |
563 | if(S_ISDIR(stat_buf.st_mode)) { |
3aee1200 |
564 | |
62e4e7bf |
565 | g_debug("Entering subdirectory...\n"); |
566 | ret = open_tracefiles(trace, path, rel_path); |
567 | if(ret < 0) continue; |
568 | } else if(S_ISREG(stat_buf.st_mode)) { |
569 | GQuark name; |
f64fedd7 |
570 | guint num; |
571 | gulong tid, pgid; |
62e4e7bf |
572 | guint64 creation; |
3aee1200 |
573 | GArray *group; |
f64fedd7 |
574 | num = 0; |
575 | tid = pgid = 0; |
62e4e7bf |
576 | creation = 0; |
ae3d0f50 |
577 | if(get_tracefile_name_number(rel_path, &name, &num, &tid, &pgid, &creation)) |
3aee1200 |
578 | continue; /* invalid name */ |
3865ea09 |
579 | |
62e4e7bf |
580 | g_debug("Opening file.\n"); |
cb03932a |
581 | if(ltt_tracefile_open(trace, path, &tmp_tf)) { |
582 | g_info("Error opening tracefile %s", path); |
583 | |
584 | continue; /* error opening the tracefile : bad magic number ? */ |
585 | } |
586 | |
3865ea09 |
587 | g_debug("Tracefile name is %s and number is %u", |
588 | g_quark_to_string(name), num); |
589 | |
cb03932a |
590 | tmp_tf.cpu_online = 1; |
591 | tmp_tf.cpu_num = num; |
d3d34f49 |
592 | tmp_tf.name = name; |
62e4e7bf |
593 | tmp_tf.tid = tid; |
594 | tmp_tf.pgid = pgid; |
595 | tmp_tf.creation = creation; |
3865ea09 |
596 | group = g_datalist_id_get_data(&trace->tracefiles, name); |
3aee1200 |
597 | if(group == NULL) { |
598 | /* Elements are automatically cleared when the array is allocated. |
599 | * It makes the cpu_online variable set to 0 : cpu offline, by default. |
600 | */ |
601 | group = g_array_sized_new (FALSE, TRUE, sizeof(LttTracefile), 10); |
3865ea09 |
602 | g_datalist_id_set_data_full(&trace->tracefiles, name, |
3aee1200 |
603 | group, ltt_tracefile_group_destroy); |
604 | } |
cb03932a |
605 | |
3aee1200 |
606 | /* Add the per cpu tracefile to the named group */ |
607 | unsigned int old_len = group->len; |
608 | if(num+1 > old_len) |
609 | group = g_array_set_size(group, num+1); |
cb03932a |
610 | g_array_index (group, LttTracefile, num) = tmp_tf; |
afd57a3c |
611 | g_array_index (group, LttTracefile, num).event.tracefile = |
612 | &g_array_index (group, LttTracefile, num); |
62e4e7bf |
613 | } |
614 | } |
615 | |
616 | closedir(dir); |
3aee1200 |
617 | |
62e4e7bf |
618 | return 0; |
f7afe191 |
619 | } |
620 | |
3aee1200 |
621 | |
622 | /* Presumes the tracefile is already seeked at the beginning. It makes sense, |
623 | * because it must be done just after the opening */ |
2fc874ab |
624 | static int ltt_process_metadata_tracefile(LttTracefile *tf) |
3aee1200 |
625 | { |
626 | int err; |
cb03932a |
627 | guint i; |
3aee1200 |
628 | |
629 | while(1) { |
630 | err = ltt_tracefile_read_seek(tf); |
631 | if(err == EPERM) goto seek_error; |
632 | else if(err == ERANGE) break; /* End of tracefile */ |
633 | |
634 | err = ltt_tracefile_read_update_event(tf); |
635 | if(err) goto update_error; |
636 | |
3aee1200 |
637 | /* The rules are : |
2fc874ab |
638 | * It contains only core events : |
639 | * 0 : set_marker_id |
640 | * 1 : set_marker_format |
3aee1200 |
641 | */ |
3c165eaf |
642 | if(tf->event.event_id >= MARKER_CORE_IDS) { |
2fc874ab |
643 | /* Should only contain core events */ |
644 | g_warning("Error in processing metadata file %s, " |
3c165eaf |
645 | "should not contain event id %u.", g_quark_to_string(tf->name), |
646 | tf->event.event_id); |
3aee1200 |
647 | err = EPERM; |
3c165eaf |
648 | goto event_id_error; |
d2083cab |
649 | } else { |
2e13d6af |
650 | char *pos; |
3c165eaf |
651 | const char *marker_name, *format; |
652 | uint16_t id; |
653 | guint8 int_size, long_size, pointer_size, size_t_size, alignment; |
3aee1200 |
654 | |
3c165eaf |
655 | switch((enum marker_id)tf->event.event_id) { |
656 | case MARKER_ID_SET_MARKER_ID: |
2e13d6af |
657 | marker_name = pos = tf->event.data; |
3c165eaf |
658 | g_debug("Doing MARKER_ID_SET_MARKER_ID of marker %s", marker_name); |
2e13d6af |
659 | pos += strlen(marker_name) + 1; |
2fc874ab |
660 | pos += ltt_align((size_t)pos, sizeof(guint16), tf->alignment); |
3c165eaf |
661 | id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
c7146c5c |
662 | g_debug("In MARKER_ID_SET_MARKER_ID of marker %s id %hu", |
663 | marker_name, id); |
3c165eaf |
664 | pos += sizeof(guint16); |
665 | int_size = *(guint8*)pos; |
666 | pos += sizeof(guint8); |
667 | long_size = *(guint8*)pos; |
668 | pos += sizeof(guint8); |
669 | pointer_size = *(guint8*)pos; |
670 | pos += sizeof(guint8); |
671 | size_t_size = *(guint8*)pos; |
672 | pos += sizeof(guint8); |
673 | alignment = *(guint8*)pos; |
674 | pos += sizeof(guint8); |
675 | marker_id_event(tf->trace, g_quark_from_string(marker_name), |
676 | id, int_size, long_size, |
677 | pointer_size, size_t_size, alignment); |
3aee1200 |
678 | break; |
3c165eaf |
679 | case MARKER_ID_SET_MARKER_FORMAT: |
2e13d6af |
680 | marker_name = pos = tf->event.data; |
3c165eaf |
681 | g_debug("Doing MARKER_ID_SET_MARKER_FORMAT of marker %s", |
682 | marker_name); |
2e13d6af |
683 | pos += strlen(marker_name) + 1; |
2e13d6af |
684 | format = pos; |
3c165eaf |
685 | pos += strlen(format) + 1; |
3c165eaf |
686 | marker_format_event(tf->trace, g_quark_from_string(marker_name), |
687 | format); |
2fc874ab |
688 | /* get information from dictionary TODO */ |
d1bb700c |
689 | break; |
3aee1200 |
690 | default: |
2fc874ab |
691 | g_warning("Error in processing metadata file %s, " |
3c165eaf |
692 | "unknown event id %hhu.", |
3aee1200 |
693 | g_quark_to_string(tf->name), |
694 | tf->event.event_id); |
695 | err = EPERM; |
696 | goto event_id_error; |
697 | } |
698 | } |
963b5f2d |
699 | } |
3aee1200 |
700 | return 0; |
963b5f2d |
701 | |
3aee1200 |
702 | /* Error handling */ |
3aee1200 |
703 | event_id_error: |
3aee1200 |
704 | update_error: |
705 | seek_error: |
2fc874ab |
706 | g_warning("An error occured in metadata tracefile parsing"); |
3aee1200 |
707 | return err; |
6cd62ccf |
708 | } |
709 | |
e95fe8f7 |
710 | /* |
711 | * Open a trace and return its LttTrace handle. |
712 | * |
713 | * pathname must be the directory of the trace |
714 | */ |
963b5f2d |
715 | |
3aee1200 |
716 | LttTrace *ltt_trace_open(const gchar *pathname) |
717 | { |
718 | gchar abs_path[PATH_MAX]; |
719 | LttTrace * t; |
720 | LttTracefile *tf; |
721 | GArray *group; |
b56dcdf2 |
722 | int i, ret; |
64dd41a5 |
723 | ltt_subbuffer_header_t *header; |
62e4e7bf |
724 | DIR *dir; |
725 | struct dirent *entry; |
b56dcdf2 |
726 | guint control_found = 0; |
62e4e7bf |
727 | struct stat stat_buf; |
b56dcdf2 |
728 | gchar path[PATH_MAX]; |
3aee1200 |
729 | |
730 | t = g_new(LttTrace, 1); |
731 | if(!t) goto alloc_error; |
732 | |
733 | get_absolute_pathname(pathname, abs_path); |
734 | t->pathname = g_quark_from_string(abs_path); |
735 | |
3aee1200 |
736 | g_datalist_init(&t->tracefiles); |
b56dcdf2 |
737 | |
738 | /* Test to see if it looks like a trace */ |
62e4e7bf |
739 | dir = opendir(abs_path); |
740 | if(dir == NULL) { |
741 | perror(abs_path); |
742 | goto open_error; |
743 | } |
744 | while((entry = readdir(dir)) != NULL) { |
b56dcdf2 |
745 | strcpy(path, abs_path); |
746 | strcat(path, "/"); |
747 | strcat(path, entry->d_name); |
62e4e7bf |
748 | ret = stat(path, &stat_buf); |
749 | if(ret == -1) { |
750 | perror(path); |
751 | continue; |
752 | } |
753 | if(S_ISDIR(stat_buf.st_mode)) { |
b56dcdf2 |
754 | if(strcmp(entry->d_name, "control") == 0) { |
755 | control_found = 1; |
756 | } |
b56dcdf2 |
757 | } |
758 | } |
759 | closedir(dir); |
760 | |
fe452434 |
761 | if(!control_found) goto find_error; |
b56dcdf2 |
762 | |
763 | /* Open all the tracefiles */ |
e45551ac |
764 | if(open_tracefiles(t, abs_path, "")) { |
765 | g_warning("Error opening tracefile %s", abs_path); |
b56dcdf2 |
766 | goto find_error; |
e45551ac |
767 | } |
3aee1200 |
768 | |
2fc874ab |
769 | /* Parse each trace control/metadata_N files : get runtime fac. info */ |
770 | group = g_datalist_id_get_data(&t->tracefiles, LTT_TRACEFILE_NAME_METADATA); |
3aee1200 |
771 | if(group == NULL) { |
2fc874ab |
772 | g_error("Trace %s has no metadata tracefile", abs_path); |
3865ea09 |
773 | g_assert(0); |
2fc874ab |
774 | goto metadata_error; |
3aee1200 |
775 | } |
776 | |
e0c7c400 |
777 | /* |
778 | * Get the trace information for the control/metadata_0 tracefile. |
779 | * Getting a correct trace start_time and start_tsc is insured by the fact |
780 | * that no subbuffers are supposed to be lost in the metadata channel. |
781 | * Therefore, the first subbuffer contains the start_tsc timestamp in its |
782 | * buffer header. |
783 | */ |
16fcbb80 |
784 | g_assert(group->len > 0); |
785 | tf = &g_array_index (group, LttTracefile, 0); |
64dd41a5 |
786 | header = (ltt_subbuffer_header_t *)tf->buffer.head; |
ac3b1c7d |
787 | ret = parse_trace_header(header, tf, t); |
788 | g_assert(!ret); |
b56dcdf2 |
789 | |
790 | t->num_cpu = group->len; |
16fcbb80 |
791 | |
d79909d1 |
792 | ret = allocate_marker_data(t); |
b44ba972 |
793 | if (ret) |
d79909d1 |
794 | g_error("Error in allocating marker data"); |
795 | |
3aee1200 |
796 | for(i=0; i<group->len; i++) { |
797 | tf = &g_array_index (group, LttTracefile, i); |
e85b0b1b |
798 | if (tf->cpu_online) |
2fc874ab |
799 | if(ltt_process_metadata_tracefile(tf)) |
800 | goto metadata_error; |
3aee1200 |
801 | } |
dd3a6d39 |
802 | |
3aee1200 |
803 | return t; |
804 | |
805 | /* Error handling */ |
2fc874ab |
806 | metadata_error: |
d79909d1 |
807 | destroy_marker_data(t); |
b56dcdf2 |
808 | find_error: |
3aee1200 |
809 | g_datalist_clear(&t->tracefiles); |
b56dcdf2 |
810 | open_error: |
3aee1200 |
811 | g_free(t); |
812 | alloc_error: |
813 | return NULL; |
814 | |
815 | } |
6cd62ccf |
816 | |
e95fe8f7 |
817 | /* Open another, completely independant, instance of a trace. |
818 | * |
819 | * A read on this new instance will read the first event of the trace. |
820 | * |
3aee1200 |
821 | * When we copy a trace, we want all the opening actions to happen again : |
822 | * the trace will be reopened and totally independant from the original. |
823 | * That's why we call ltt_trace_open. |
e95fe8f7 |
824 | */ |
3aee1200 |
825 | LttTrace *ltt_trace_copy(LttTrace *self) |
963b5f2d |
826 | { |
3aee1200 |
827 | return ltt_trace_open(g_quark_to_string(self->pathname)); |
963b5f2d |
828 | } |
829 | |
e95fe8f7 |
830 | /* |
831 | * Close a trace |
832 | */ |
833 | |
3aee1200 |
834 | void ltt_trace_close(LttTrace *t) |
6cd62ccf |
835 | { |
3aee1200 |
836 | g_datalist_clear(&t->tracefiles); |
837 | g_free(t); |
6cd62ccf |
838 | } |
839 | |
3aee1200 |
840 | |
6cd62ccf |
841 | /***************************************************************************** |
3aee1200 |
842 | * Get the start time and end time of the trace |
6cd62ccf |
843 | ****************************************************************************/ |
844 | |
3c165eaf |
845 | void ltt_tracefile_time_span_get(LttTracefile *tf, |
3aee1200 |
846 | LttTime *start, LttTime *end) |
6cd62ccf |
847 | { |
3aee1200 |
848 | int err; |
6cd62ccf |
849 | |
3aee1200 |
850 | err = map_block(tf, 0); |
851 | if(unlikely(err)) { |
852 | g_error("Can not map block"); |
853 | *start = ltt_time_infinite; |
854 | } else |
855 | *start = tf->buffer.begin.timestamp; |
856 | |
857 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
858 | if(unlikely(err)) { |
859 | g_error("Can not map block"); |
860 | *end = ltt_time_zero; |
861 | } else |
862 | *end = tf->buffer.end.timestamp; |
6cd62ccf |
863 | } |
864 | |
3aee1200 |
865 | struct tracefile_time_span_get_args { |
866 | LttTrace *t; |
867 | LttTime *start; |
868 | LttTime *end; |
869 | }; |
963b5f2d |
870 | |
8655430b |
871 | static void group_time_span_get(GQuark name, gpointer data, gpointer user_data) |
963b5f2d |
872 | { |
3aee1200 |
873 | struct tracefile_time_span_get_args *args = |
874 | (struct tracefile_time_span_get_args*)user_data; |
875 | |
876 | GArray *group = (GArray *)data; |
877 | int i; |
878 | LttTracefile *tf; |
879 | LttTime tmp_start; |
880 | LttTime tmp_end; |
881 | |
882 | for(i=0; i<group->len; i++) { |
883 | tf = &g_array_index (group, LttTracefile, i); |
884 | if(tf->cpu_online) { |
885 | ltt_tracefile_time_span_get(tf, &tmp_start, &tmp_end); |
886 | if(ltt_time_compare(*args->start, tmp_start)>0) *args->start = tmp_start; |
887 | if(ltt_time_compare(*args->end, tmp_end)<0) *args->end = tmp_end; |
888 | } |
889 | } |
6cd62ccf |
890 | } |
891 | |
8655430b |
892 | /* return the start and end time of a trace */ |
893 | |
487ad181 |
894 | void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end) |
895 | { |
3aee1200 |
896 | LttTime min_start = ltt_time_infinite; |
897 | LttTime max_end = ltt_time_zero; |
898 | struct tracefile_time_span_get_args args = { t, &min_start, &max_end }; |
487ad181 |
899 | |
3aee1200 |
900 | g_datalist_foreach(&t->tracefiles, &group_time_span_get, &args); |
901 | |
902 | if(start != NULL) *start = min_start; |
903 | if(end != NULL) *end = max_end; |
904 | |
487ad181 |
905 | } |
906 | |
907 | |
3aee1200 |
908 | /* Seek to the first event in a tracefile that has a time equal or greater than |
909 | * the time passed in parameter. |
910 | * |
911 | * If the time parameter is outside the tracefile time span, seek to the first |
27304273 |
912 | * event or if after, return ERANGE. |
3aee1200 |
913 | * |
914 | * If the time parameter is before the first event, we have to seek specially to |
915 | * there. |
916 | * |
27304273 |
917 | * If the time is after the end of the trace, return ERANGE. |
3aee1200 |
918 | * |
919 | * Do a binary search to find the right block, then a sequential search in the |
920 | * block to find the event. |
921 | * |
922 | * In the special case where the time requested fits inside a block that has no |
923 | * event corresponding to the requested time, the first event of the next block |
924 | * will be seeked. |
925 | * |
926 | * IMPORTANT NOTE : // FIXME everywhere... |
927 | * |
928 | * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time : |
929 | * you will jump over an event if you do. |
930 | * |
931 | * Return value : 0 : no error, the tf->event can be used |
27304273 |
932 | * ERANGE : time if after the last event of the trace |
3aee1200 |
933 | * otherwise : this is an error. |
934 | * |
935 | * */ |
936 | |
937 | int ltt_tracefile_seek_time(LttTracefile *tf, LttTime time) |
938 | { |
939 | int ret = 0; |
940 | int err; |
941 | unsigned int block_num, high, low; |
942 | |
943 | /* seek at the beginning of trace */ |
944 | err = map_block(tf, 0); /* First block */ |
945 | if(unlikely(err)) { |
946 | g_error("Can not map block"); |
947 | goto fail; |
caf7a67a |
948 | } |
949 | |
3aee1200 |
950 | /* If the time is lower or equal the beginning of the trace, |
951 | * go to the first event. */ |
952 | if(ltt_time_compare(time, tf->buffer.begin.timestamp) <= 0) { |
953 | ret = ltt_tracefile_read(tf); |
27304273 |
954 | if(ret == ERANGE) goto range; |
955 | else if (ret) goto fail; |
3aee1200 |
956 | goto found; /* There is either no event in the trace or the event points |
957 | to the first event in the trace */ |
958 | } |
caf7a67a |
959 | |
3aee1200 |
960 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
961 | if(unlikely(err)) { |
962 | g_error("Can not map block"); |
963 | goto fail; |
caf7a67a |
964 | } |
6cd62ccf |
965 | |
27304273 |
966 | /* If the time is after the end of the trace, return ERANGE. */ |
967 | if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
968 | goto range; |
3aee1200 |
969 | } |
62e55dd6 |
970 | |
3aee1200 |
971 | /* Binary search the block */ |
972 | high = tf->num_blocks - 1; |
973 | low = 0; |
974 | |
975 | while(1) { |
976 | block_num = ((high-low) / 2) + low; |
977 | |
978 | err = map_block(tf, block_num); |
979 | if(unlikely(err)) { |
980 | g_error("Can not map block"); |
981 | goto fail; |
db55eaae |
982 | } |
3aee1200 |
983 | if(high == low) { |
984 | /* We cannot divide anymore : this is what would happen if the time |
985 | * requested was exactly between two consecutive buffers'end and start |
986 | * timestamps. This is also what would happend if we didn't deal with out |
987 | * of span cases prior in this function. */ |
988 | /* The event is right in the buffer! |
989 | * (or in the next buffer first event) */ |
990 | while(1) { |
991 | ret = ltt_tracefile_read(tf); |
27304273 |
992 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ |
3aee1200 |
993 | else if(ret) goto fail; |
994 | |
d9e13a0f |
995 | if(ltt_time_compare(time, tf->event.event_time) <= 0) |
e45551ac |
996 | goto found; |
3aee1200 |
997 | } |
998 | |
27304273 |
999 | } else if(ltt_time_compare(time, tf->buffer.begin.timestamp) < 0) { |
3aee1200 |
1000 | /* go to lower part */ |
b1369bef |
1001 | high = block_num - 1; |
3aee1200 |
1002 | } else if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
1003 | /* go to higher part */ |
b1369bef |
1004 | low = block_num + 1; |
3aee1200 |
1005 | } else {/* The event is right in the buffer! |
1006 | (or in the next buffer first event) */ |
1007 | while(1) { |
27304273 |
1008 | ret = ltt_tracefile_read(tf); |
1009 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ |
3aee1200 |
1010 | else if(ret) goto fail; |
1011 | |
d9e13a0f |
1012 | if(ltt_time_compare(time, tf->event.event_time) <= 0) |
3aee1200 |
1013 | break; |
6cd62ccf |
1014 | } |
3aee1200 |
1015 | goto found; |
6cd62ccf |
1016 | } |
6cd62ccf |
1017 | } |
3aee1200 |
1018 | |
1019 | found: |
1020 | return 0; |
27304273 |
1021 | range: |
1022 | return ERANGE; |
3aee1200 |
1023 | |
1024 | /* Error handling */ |
1025 | fail: |
1026 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
1027 | g_quark_to_string(tf->name)); |
1028 | return EPERM; |
6cd62ccf |
1029 | } |
1030 | |
e95fe8f7 |
1031 | /* Seek to a position indicated by an LttEventPosition |
1032 | */ |
80da81ad |
1033 | |
8655430b |
1034 | int ltt_tracefile_seek_position(LttTracefile *tf, const LttEventPosition *ep) |
1035 | { |
3aee1200 |
1036 | int err; |
1037 | |
1038 | if(ep->tracefile != tf) { |
1039 | goto fail; |
80da81ad |
1040 | } |
1041 | |
3aee1200 |
1042 | err = map_block(tf, ep->block); |
1043 | if(unlikely(err)) { |
1044 | g_error("Can not map block"); |
1045 | goto fail; |
1046 | } |
1047 | |
1048 | tf->event.offset = ep->offset; |
18206708 |
1049 | |
62e4e7bf |
1050 | /* Put back the event real tsc */ |
1051 | tf->event.tsc = ep->tsc; |
1052 | tf->buffer.tsc = ep->tsc; |
78f79181 |
1053 | |
3aee1200 |
1054 | err = ltt_tracefile_read_update_event(tf); |
1055 | if(err) goto fail; |
73faf25a |
1056 | |
1057 | /* deactivate this, as it does nothing for now |
3aee1200 |
1058 | err = ltt_tracefile_read_op(tf); |
1059 | if(err) goto fail; |
73faf25a |
1060 | */ |
80da81ad |
1061 | |
a0c1f622 |
1062 | return 0; |
3aee1200 |
1063 | |
1064 | fail: |
1065 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
1066 | g_quark_to_string(tf->name)); |
a0c1f622 |
1067 | return 1; |
3aee1200 |
1068 | } |
1069 | |
e95fe8f7 |
1070 | /* Given a TSC value, return the LttTime (seconds,nanoseconds) it |
1071 | * corresponds to. |
1072 | */ |
1073 | |
ae3d0f50 |
1074 | LttTime ltt_interpolate_time_from_tsc(LttTracefile *tf, guint64 tsc) |
3aee1200 |
1075 | { |
1076 | LttTime time; |
62e4e7bf |
1077 | |
1078 | if(tsc > tf->trace->start_tsc) { |
1079 | time = ltt_time_from_uint64( |
1080 | (double)(tsc - tf->trace->start_tsc) |
d0e3122a |
1081 | * 1000000000.0 * tf->trace->freq_scale |
62e4e7bf |
1082 | / (double)tf->trace->start_freq); |
1083 | time = ltt_time_add(tf->trace->start_time_from_tsc, time); |
1084 | } else { |
1085 | time = ltt_time_from_uint64( |
1086 | (double)(tf->trace->start_tsc - tsc) |
d0e3122a |
1087 | * 1000000000.0 * tf->trace->freq_scale |
62e4e7bf |
1088 | / (double)tf->trace->start_freq); |
1089 | time = ltt_time_sub(tf->trace->start_time_from_tsc, time); |
1090 | } |
3aee1200 |
1091 | return time; |
80da81ad |
1092 | } |
1093 | |
ae3d0f50 |
1094 | /* Calculate the real event time based on the buffer boundaries */ |
1095 | LttTime ltt_interpolate_time(LttTracefile *tf, LttEvent *event) |
1096 | { |
62e4e7bf |
1097 | return ltt_interpolate_time_from_tsc(tf, tf->buffer.tsc); |
ae3d0f50 |
1098 | } |
1099 | |
eed2ef37 |
1100 | |
1101 | /* Get the current event of the tracefile : valid until the next read */ |
1102 | LttEvent *ltt_tracefile_get_event(LttTracefile *tf) |
1103 | { |
1104 | return &tf->event; |
1105 | } |
1106 | |
1107 | |
1108 | |
6cd62ccf |
1109 | /***************************************************************************** |
1110 | *Function name |
3aee1200 |
1111 | * ltt_tracefile_read : Read the next event in the tracefile |
6cd62ccf |
1112 | *Input params |
1113 | * t : tracefile |
1114 | *Return value |
3aee1200 |
1115 | * |
1116 | * Returns 0 if an event can be used in tf->event. |
d822520b |
1117 | * Returns ERANGE on end of trace. The event in tf->event still can be used |
1118 | * (if the last block was not empty). |
3aee1200 |
1119 | * Returns EPERM on error. |
1120 | * |
1121 | * This function does make the tracefile event structure point to the event |
1122 | * currently pointed to by the tf->event. |
1123 | * |
1124 | * Note : you must call a ltt_tracefile_seek to the beginning of the trace to |
1125 | * reinitialize it after an error if you want results to be coherent. |
1126 | * It would be the case if a end of trace last buffer has no event : the end |
1127 | * of trace wouldn't be returned, but an error. |
1128 | * We make the assumption there is at least one event per buffer. |
6cd62ccf |
1129 | ****************************************************************************/ |
1130 | |
3aee1200 |
1131 | int ltt_tracefile_read(LttTracefile *tf) |
6cd62ccf |
1132 | { |
963b5f2d |
1133 | int err; |
6cd62ccf |
1134 | |
3aee1200 |
1135 | err = ltt_tracefile_read_seek(tf); |
1136 | if(err) return err; |
1137 | err = ltt_tracefile_read_update_event(tf); |
1138 | if(err) return err; |
73faf25a |
1139 | |
1140 | /* deactivate this, as it does nothing for now |
3aee1200 |
1141 | err = ltt_tracefile_read_op(tf); |
1142 | if(err) return err; |
73faf25a |
1143 | */ |
3aee1200 |
1144 | |
1145 | return 0; |
1146 | } |
1147 | |
1148 | int ltt_tracefile_read_seek(LttTracefile *tf) |
1149 | { |
1150 | int err; |
1151 | |
1152 | /* Get next buffer until we finally have an event, or end of trace */ |
1153 | while(1) { |
1154 | err = ltt_seek_next_event(tf); |
1155 | if(unlikely(err == ENOPROTOOPT)) { |
1156 | return EPERM; |
bdc36259 |
1157 | } |
bdc36259 |
1158 | |
3aee1200 |
1159 | /* Are we at the end of the buffer ? */ |
1160 | if(err == ERANGE) { |
1161 | if(unlikely(tf->buffer.index == tf->num_blocks-1)){ /* end of trace ? */ |
1162 | return ERANGE; |
1163 | } else { |
1164 | /* get next block */ |
1165 | err = map_block(tf, tf->buffer.index + 1); |
1166 | if(unlikely(err)) { |
1167 | g_error("Can not map block"); |
1168 | return EPERM; |
1169 | } |
1170 | } |
1171 | } else break; /* We found an event ! */ |
1172 | } |
2dee981d |
1173 | |
3aee1200 |
1174 | return 0; |
1175 | } |
18206708 |
1176 | |
e95fe8f7 |
1177 | /* do an operation when reading a new event */ |
18206708 |
1178 | |
73faf25a |
1179 | /* This function does nothing for now */ |
1180 | #if 0 |
3aee1200 |
1181 | int ltt_tracefile_read_op(LttTracefile *tf) |
1182 | { |
3aee1200 |
1183 | LttEvent *event; |
1184 | |
1185 | event = &tf->event; |
18206708 |
1186 | |
73faf25a |
1187 | /* do event specific operation */ |
1188 | |
1189 | /* nothing */ |
40331ba8 |
1190 | |
3aee1200 |
1191 | return 0; |
6cd62ccf |
1192 | } |
73faf25a |
1193 | #endif |
6cd62ccf |
1194 | |
91f8d488 |
1195 | static void print_debug_event_header(LttEvent *ev, void *start_pos, void *end_pos) |
1196 | { |
1197 | unsigned int offset = 0; |
1198 | int i, j; |
1199 | |
1200 | g_printf("Event header (tracefile %s offset %llx):\n", |
afd57a3c |
1201 | g_quark_to_string(ev->tracefile->long_name), |
91f8d488 |
1202 | ((uint64_t)ev->tracefile->buffer.index * ev->tracefile->buf_size) |
1203 | + (long)start_pos - (long)ev->tracefile->buffer.head); |
1204 | |
1205 | while (offset < (long)end_pos - (long)start_pos) { |
1206 | g_printf("%8lx", (long)start_pos - (long)ev->tracefile->buffer.head + offset); |
1207 | g_printf(" "); |
1208 | |
1209 | for (i = 0; i < 4 ; i++) { |
1210 | for (j = 0; j < 4; j++) { |
1211 | if (offset + ((i * 4) + j) < |
1212 | (long)end_pos - (long)start_pos) |
1213 | g_printf("%02hhX", |
d3353231 |
1214 | ((char*)start_pos)[offset + ((i * 4) + j)]); |
91f8d488 |
1215 | else |
1216 | g_printf(" "); |
1217 | g_printf(" "); |
1218 | } |
1219 | if (i < 4) |
1220 | g_printf(" "); |
1221 | } |
1222 | offset+=16; |
1223 | g_printf("\n"); |
1224 | } |
1225 | } |
1226 | |
6cd62ccf |
1227 | |
3aee1200 |
1228 | /* same as ltt_tracefile_read, but does not seek to the next event nor call |
1229 | * event specific operation. */ |
1230 | int ltt_tracefile_read_update_event(LttTracefile *tf) |
6cd62ccf |
1231 | { |
3aee1200 |
1232 | void * pos; |
1233 | LttEvent *event; |
91f8d488 |
1234 | void *pos_aligned; |
3aee1200 |
1235 | |
1236 | event = &tf->event; |
eed2ef37 |
1237 | pos = tf->buffer.head + event->offset; |
3aee1200 |
1238 | |
1239 | /* Read event header */ |
1240 | |
62e4e7bf |
1241 | /* Align the head */ |
2fc874ab |
1242 | pos += ltt_align((size_t)pos, sizeof(guint32), tf->alignment); |
91f8d488 |
1243 | pos_aligned = pos; |
3aee1200 |
1244 | |
2fc874ab |
1245 | event->timestamp = ltt_get_uint32(LTT_GET_BO(tf), pos); |
1246 | event->event_id = event->timestamp >> tf->tscbits; |
a9048165 |
1247 | event->timestamp = event->timestamp & tf->tsc_mask; |
2fc874ab |
1248 | pos += sizeof(guint32); |
1249 | |
1250 | switch (event->event_id) { |
1251 | case 29: /* LTT_RFLAG_ID_SIZE_TSC */ |
1252 | event->event_id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
1253 | pos += sizeof(guint16); |
1254 | event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos); |
1255 | pos += sizeof(guint16); |
1256 | if (event->event_size == 0xFFFF) { |
1257 | event->event_size = ltt_get_uint32(LTT_GET_BO(tf), pos); |
1258 | pos += sizeof(guint32); |
d1bb700c |
1259 | } |
2fc874ab |
1260 | pos += ltt_align((size_t)pos, sizeof(guint64), tf->alignment); |
1261 | tf->buffer.tsc = ltt_get_uint64(LTT_GET_BO(tf), pos); |
62e4e7bf |
1262 | pos += sizeof(guint64); |
2fc874ab |
1263 | break; |
1264 | case 30: /* LTT_RFLAG_ID_SIZE */ |
f439de06 |
1265 | event->event_id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
3c165eaf |
1266 | pos += sizeof(guint16); |
d1bb700c |
1267 | event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos); |
1268 | pos += sizeof(guint16); |
2fc874ab |
1269 | if (event->event_size == 0xFFFF) { |
1270 | event->event_size = ltt_get_uint32(LTT_GET_BO(tf), pos); |
1271 | pos += sizeof(guint32); |
1272 | } |
1273 | break; |
1274 | case 31: /* LTT_RFLAG_ID */ |
1275 | event->event_id = ltt_get_uint16(LTT_GET_BO(tf), pos); |
1276 | pos += sizeof(guint16); |
1277 | event->event_size = G_MAXUINT; |
1278 | break; |
1279 | default: |
1280 | event->event_size = G_MAXUINT; |
1281 | break; |
1282 | } |
1283 | |
1284 | if (likely(event->event_id != 29)) { |
1285 | /* No extended timestamp */ |
1286 | if (event->timestamp < (tf->buffer.tsc & tf->tsc_mask)) |
1287 | tf->buffer.tsc = ((tf->buffer.tsc & ~tf->tsc_mask) /* overflow */ |
1288 | + tf->tsc_mask_next_bit) |
1289 | | (guint64)event->timestamp; |
1290 | else |
1291 | tf->buffer.tsc = (tf->buffer.tsc & ~tf->tsc_mask) /* no overflow */ |
1292 | | (guint64)event->timestamp; |
d1bb700c |
1293 | } |
2fc874ab |
1294 | event->tsc = tf->buffer.tsc; |
1295 | |
1296 | event->event_time = ltt_interpolate_time(tf, event); |
91f8d488 |
1297 | |
1298 | if (a_event_debug) |
1299 | print_debug_event_header(event, pos_aligned, pos); |
1300 | |
3aee1200 |
1301 | event->data = pos; |
1302 | |
2fc874ab |
1303 | /* |
1304 | * Let ltt_update_event_size update event->data according to the largest |
1305 | * alignment within the payload. |
1306 | * Get the data size and update the event fields with the current |
1307 | * information. */ |
eed2ef37 |
1308 | ltt_update_event_size(tf); |
77175651 |
1309 | |
3aee1200 |
1310 | return 0; |
6cd62ccf |
1311 | } |
1312 | |
507915ee |
1313 | |
6cd62ccf |
1314 | /**************************************************************************** |
1315 | *Function name |
3aee1200 |
1316 | * map_block : map a block from the file |
6cd62ccf |
1317 | *Input Params |
1318 | * lttdes : ltt trace file |
1319 | * whichBlock : the block which will be read |
1320 | *return value |
1321 | * 0 : success |
1322 | * EINVAL : lseek fail |
1323 | * EIO : can not read from the file |
1324 | ****************************************************************************/ |
1325 | |
8655430b |
1326 | static gint map_block(LttTracefile * tf, guint block_num) |
6cd62ccf |
1327 | { |
b77d1b57 |
1328 | int page_size = getpagesize(); |
64dd41a5 |
1329 | ltt_subbuffer_header_t *header; |
3aee1200 |
1330 | |
1331 | g_assert(block_num < tf->num_blocks); |
6cd62ccf |
1332 | |
f628823c |
1333 | if(tf->buffer.head != NULL) { |
1334 | if(munmap(tf->buffer.head, PAGE_ALIGN(tf->buf_size))) { |
1335 | g_warning("unmap size : %u\n", |
1336 | PAGE_ALIGN(tf->buf_size)); |
1337 | perror("munmap error"); |
1338 | g_assert(0); |
1339 | } |
1340 | } |
ac849774 |
1341 | |
3aee1200 |
1342 | /* Multiple of pages aligned head */ |
b77d1b57 |
1343 | tf->buffer.head = mmap(0, |
f628823c |
1344 | PAGE_ALIGN(tf->buf_size), |
b77d1b57 |
1345 | PROT_READ, MAP_PRIVATE, tf->fd, |
f628823c |
1346 | PAGE_ALIGN((off_t)tf->buf_size * (off_t)block_num)); |
3aee1200 |
1347 | |
3865ea09 |
1348 | if(tf->buffer.head == MAP_FAILED) { |
3aee1200 |
1349 | perror("Error in allocating memory for buffer of tracefile"); |
3865ea09 |
1350 | g_assert(0); |
3aee1200 |
1351 | goto map_error; |
6cd62ccf |
1352 | } |
f64fedd7 |
1353 | g_assert( ( (gulong)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
3aee1200 |
1354 | |
6cd62ccf |
1355 | |
3aee1200 |
1356 | tf->buffer.index = block_num; |
1357 | |
64dd41a5 |
1358 | header = (ltt_subbuffer_header_t *)tf->buffer.head; |
3aee1200 |
1359 | |
3aee1200 |
1360 | tf->buffer.begin.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
64dd41a5 |
1361 | &header->cycle_count_begin); |
1362 | tf->buffer.begin.freq = tf->trace->start_freq; |
ae3d0f50 |
1363 | |
1364 | tf->buffer.begin.timestamp = ltt_interpolate_time_from_tsc(tf, |
62e4e7bf |
1365 | tf->buffer.begin.cycle_count); |
3aee1200 |
1366 | tf->buffer.end.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
64dd41a5 |
1367 | &header->cycle_count_end); |
1368 | tf->buffer.end.freq = tf->trace->start_freq; |
62e4e7bf |
1369 | |
3aee1200 |
1370 | tf->buffer.lost_size = ltt_get_uint32(LTT_GET_BO(tf), |
986e2a7c |
1371 | &header->lost_size); |
ae3d0f50 |
1372 | tf->buffer.end.timestamp = ltt_interpolate_time_from_tsc(tf, |
62e4e7bf |
1373 | tf->buffer.end.cycle_count); |
3aee1200 |
1374 | tf->buffer.tsc = tf->buffer.begin.cycle_count; |
1375 | tf->event.tsc = tf->buffer.tsc; |
986e2a7c |
1376 | tf->buffer.freq = tf->buffer.begin.freq; |
3aee1200 |
1377 | |
1378 | /* FIXME |
1379 | * eventually support variable buffer size : will need a partial pre-read of |
1380 | * the headers to create an index when we open the trace... eventually. */ |
f628823c |
1381 | g_assert(tf->buf_size == ltt_get_uint32(LTT_GET_BO(tf), |
3aee1200 |
1382 | &header->buf_size)); |
507915ee |
1383 | |
3aee1200 |
1384 | /* Make the current event point to the beginning of the buffer : |
1385 | * it means that the event read must get the first event. */ |
1386 | tf->event.tracefile = tf; |
1387 | tf->event.block = block_num; |
eed2ef37 |
1388 | tf->event.offset = 0; |
3aee1200 |
1389 | |
a2bbf2e5 |
1390 | if (header->events_lost) { |
1391 | g_warning("%d events lost so far in tracefile %s at block %u", |
0c2f4984 |
1392 | (guint)header->events_lost, |
a2bbf2e5 |
1393 | g_quark_to_string(tf->long_name), |
1394 | block_num); |
426f6149 |
1395 | tf->events_lost = header->events_lost; |
1396 | } |
a2bbf2e5 |
1397 | if (header->subbuf_corrupt) { |
1398 | g_warning("%d subbuffer(s) corrupted so far in tracefile %s at block %u", |
0c2f4984 |
1399 | (guint)header->subbuf_corrupt, |
a2bbf2e5 |
1400 | g_quark_to_string(tf->long_name), |
1401 | block_num); |
426f6149 |
1402 | tf->subbuf_corrupt = header->subbuf_corrupt; |
1403 | } |
1404 | |
3aee1200 |
1405 | return 0; |
6cd62ccf |
1406 | |
3aee1200 |
1407 | map_error: |
1408 | return -errno; |
6cd62ccf |
1409 | } |
1410 | |
91f8d488 |
1411 | static void print_debug_event_data(LttEvent *ev) |
1412 | { |
1413 | unsigned int offset = 0; |
1414 | int i, j; |
1415 | |
1416 | if (!max(ev->event_size, ev->data_size)) |
1417 | return; |
1418 | |
1419 | g_printf("Event data (tracefile %s offset %llx):\n", |
afd57a3c |
1420 | g_quark_to_string(ev->tracefile->long_name), |
91f8d488 |
1421 | ((uint64_t)ev->tracefile->buffer.index * ev->tracefile->buf_size) |
1422 | + (long)ev->data - (long)ev->tracefile->buffer.head); |
1423 | |
1424 | while (offset < max(ev->event_size, ev->data_size)) { |
1425 | g_printf("%8lx", (long)ev->data + offset |
1426 | - (long)ev->tracefile->buffer.head); |
1427 | g_printf(" "); |
1428 | |
1429 | for (i = 0; i < 4 ; i++) { |
1430 | for (j = 0; j < 4; j++) { |
1431 | if (offset + ((i * 4) + j) < max(ev->event_size, ev->data_size)) |
1432 | g_printf("%02hhX", ((char*)ev->data)[offset + ((i * 4) + j)]); |
1433 | else |
1434 | g_printf(" "); |
1435 | g_printf(" "); |
1436 | } |
1437 | if (i < 4) |
1438 | g_printf(" "); |
1439 | } |
1440 | |
1441 | g_printf(" "); |
1442 | |
1443 | for (i = 0; i < 4; i++) { |
1444 | for (j = 0; j < 4; j++) { |
1445 | if (offset + ((i * 4) + j) < max(ev->event_size, ev->data_size)) { |
1446 | if (isprint(((char*)ev->data)[offset + ((i * 4) + j)])) |
1447 | g_printf("%c", ((char*)ev->data)[offset + ((i * 4) + j)]); |
1448 | else |
1449 | g_printf("."); |
1450 | } else |
1451 | g_printf(" "); |
1452 | } |
1453 | } |
1454 | offset+=16; |
1455 | g_printf("\n"); |
1456 | } |
1457 | } |
1458 | |
77175651 |
1459 | /* It will update the fields offsets too */ |
1460 | void ltt_update_event_size(LttTracefile *tf) |
6cd62ccf |
1461 | { |
2312de30 |
1462 | off_t size = 0; |
d1bb700c |
1463 | char *tscdata; |
d2007fbd |
1464 | struct marker_info *info; |
44f317b7 |
1465 | |
d2007fbd |
1466 | switch((enum marker_id)tf->event.event_id) { |
1467 | case MARKER_ID_SET_MARKER_ID: |
44f317b7 |
1468 | size = strlen((char*)tf->event.data) + 1; |
07effdbd |
1469 | g_debug("marker %s id set", (char*)tf->event.data); |
256a5b3a |
1470 | size += ltt_align(size, sizeof(guint16), tf->alignment); |
d2007fbd |
1471 | size += sizeof(guint16); |
3c165eaf |
1472 | size += sizeof(guint8); |
1473 | size += sizeof(guint8); |
1474 | size += sizeof(guint8); |
1475 | size += sizeof(guint8); |
1476 | size += sizeof(guint8); |
44f317b7 |
1477 | break; |
d2007fbd |
1478 | case MARKER_ID_SET_MARKER_FORMAT: |
07effdbd |
1479 | g_debug("marker %s format set", (char*)tf->event.data); |
44f317b7 |
1480 | size = strlen((char*)tf->event.data) + 1; |
2e13d6af |
1481 | size += strlen((char*)tf->event.data + size) + 1; |
44f317b7 |
1482 | break; |
256a5b3a |
1483 | } |
1484 | |
1485 | info = marker_get_info_from_id(tf->trace, tf->event.event_id); |
dcf96842 |
1486 | |
256a5b3a |
1487 | if (tf->event.event_id >= MARKER_CORE_IDS) |
1488 | g_assert(info != NULL); |
1489 | |
1490 | /* Do not update field offsets of core markers when initially reading the |
2fc874ab |
1491 | * metadata tracefile when the infos about these markers do not exist yet. |
256a5b3a |
1492 | */ |
1493 | if (likely(info && info->fields)) { |
2fc874ab |
1494 | /* alignment */ |
196085f2 |
1495 | tf->event.data += ltt_align((off_t)(unsigned long)tf->event.data, |
1496 | info->largest_align, |
2fc874ab |
1497 | info->alignment); |
1498 | /* size, dynamically computed */ |
256a5b3a |
1499 | if (info->size != -1) |
1500 | size = info->size; |
1501 | else |
1502 | size = marker_update_fields_offsets(marker_get_info_from_id(tf->trace, |
1503 | tf->event.event_id), tf->event.data); |
44f317b7 |
1504 | } |
c4afd5d8 |
1505 | |
d2007fbd |
1506 | tf->event.data_size = size; |
1507 | |
1508 | /* Check consistency between kernel and LTTV structure sizes */ |
2fc874ab |
1509 | if(tf->event.event_size == G_MAXUINT) { |
d2007fbd |
1510 | /* Event size too big to fit in the event size field */ |
1511 | tf->event.event_size = tf->event.data_size; |
1512 | } |
91f8d488 |
1513 | |
1514 | if (a_event_debug) |
1515 | print_debug_event_data(&tf->event); |
1516 | |
2fc874ab |
1517 | /* Having a marker load or marker format event out of the metadata |
27c089c1 |
1518 | * tracefiles is a serious bug. */ |
1519 | switch((enum marker_id)tf->event.event_id) { |
1520 | case MARKER_ID_SET_MARKER_ID: |
1521 | case MARKER_ID_SET_MARKER_FORMAT: |
2fc874ab |
1522 | if (tf->name != g_quark_from_string("/control/metadata")) |
27c089c1 |
1523 | g_error("Trace inconsistency : metadata event found in data " |
1524 | "tracefile %s", g_quark_to_string(tf->long_name)); |
1525 | } |
1526 | |
d2007fbd |
1527 | if (tf->event.data_size != tf->event.event_size) { |
3c165eaf |
1528 | struct marker_info *info = marker_get_info_from_id(tf->trace, |
1529 | tf->event.event_id); |
1530 | g_error("Kernel/LTTV event size differs for event %s: kernel %u, LTTV %u", |
1531 | g_quark_to_string(info->name), |
1532 | tf->event.event_size, tf->event.data_size); |
d2007fbd |
1533 | exit(-1); |
1534 | } |
6cd62ccf |
1535 | } |
1536 | |
6cd62ccf |
1537 | |
2fc874ab |
1538 | /* Take the tf current event offset and use the event id to figure out where is |
1539 | * the next event offset. |
3aee1200 |
1540 | * |
1541 | * This is an internal function not aiming at being used elsewhere : it will |
1542 | * not jump over the current block limits. Please consider using |
1543 | * ltt_tracefile_read to do this. |
1544 | * |
1545 | * Returns 0 on success |
1546 | * ERANGE if we are at the end of the buffer. |
1547 | * ENOPROTOOPT if an error occured when getting the current event size. |
1548 | */ |
8655430b |
1549 | static int ltt_seek_next_event(LttTracefile *tf) |
6cd62ccf |
1550 | { |
3aee1200 |
1551 | int ret = 0; |
1552 | void *pos; |
3aee1200 |
1553 | |
1554 | /* seek over the buffer header if we are at the buffer start */ |
eed2ef37 |
1555 | if(tf->event.offset == 0) { |
51551c6f |
1556 | tf->event.offset += tf->buffer_header_size; |
b77d1b57 |
1557 | |
f628823c |
1558 | if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) { |
b77d1b57 |
1559 | ret = ERANGE; |
1560 | } |
3aee1200 |
1561 | goto found; |
1562 | } |
2fc874ab |
1563 | |
3aee1200 |
1564 | pos = tf->event.data; |
1565 | |
77175651 |
1566 | if(tf->event.data_size < 0) goto error; |
3aee1200 |
1567 | |
77175651 |
1568 | pos += (size_t)tf->event.data_size; |
3aee1200 |
1569 | |
eed2ef37 |
1570 | tf->event.offset = pos - tf->buffer.head; |
cb03932a |
1571 | |
f628823c |
1572 | if(tf->event.offset == tf->buf_size - tf->buffer.lost_size) { |
cb03932a |
1573 | ret = ERANGE; |
1574 | goto found; |
1575 | } |
36d36c9f |
1576 | g_assert(tf->event.offset < tf->buf_size - tf->buffer.lost_size); |
3aee1200 |
1577 | |
1578 | found: |
1579 | return ret; |
1580 | |
1581 | error: |
1582 | g_error("Error in ltt_seek_next_event for tracefile %s", |
1583 | g_quark_to_string(tf->name)); |
1584 | return ENOPROTOOPT; |
6cd62ccf |
1585 | } |
1586 | |
f104d082 |
1587 | #if 0 |
3aee1200 |
1588 | /***************************************************************************** |
6cd62ccf |
1589 | *Function name |
3aee1200 |
1590 | * set_fields_offsets : set the precomputable offset of the fields |
6cd62ccf |
1591 | *Input params |
3aee1200 |
1592 | * tracefile : opened trace file |
1593 | * event_type : the event type |
6cd62ccf |
1594 | ****************************************************************************/ |
1595 | |
3aee1200 |
1596 | void set_fields_offsets(LttTracefile *tf, LttEventType *event_type) |
6cd62ccf |
1597 | { |
3aee1200 |
1598 | LttField *field = event_type->root_field; |
1599 | enum field_status fixed_root = FIELD_FIXED, fixed_parent = FIELD_FIXED; |
1600 | |
1601 | if(likely(field)) |
1602 | preset_field_type_size(tf, event_type, 0, 0, |
1603 | &fixed_root, &fixed_parent, |
1604 | field); |
1605 | |
1606 | } |
f104d082 |
1607 | #endif //0 |
1608 | |
1609 | |
1610 | /***************************************************************************** |
1611 | *Function name |
1612 | * get_alignment : Get the alignment needed for a field. |
1613 | *Input params |
f104d082 |
1614 | * field : field |
1615 | * |
1616 | * returns : The size on which it must be aligned. |
1617 | * |
1618 | ****************************************************************************/ |
3c165eaf |
1619 | #if 0 |
743e50fd |
1620 | off_t get_alignment(LttField *field) |
f104d082 |
1621 | { |
2312de30 |
1622 | LttType *type = &field->field_type; |
f104d082 |
1623 | |
1624 | switch(type->type_class) { |
1625 | case LTT_INT_FIXED: |
1626 | case LTT_UINT_FIXED: |
1627 | case LTT_POINTER: |
1628 | case LTT_CHAR: |
1629 | case LTT_UCHAR: |
1630 | case LTT_SHORT: |
1631 | case LTT_USHORT: |
1632 | case LTT_INT: |
1633 | case LTT_UINT: |
1634 | case LTT_LONG: |
1635 | case LTT_ULONG: |
1636 | case LTT_SIZE_T: |
1637 | case LTT_SSIZE_T: |
1638 | case LTT_OFF_T: |
1639 | case LTT_FLOAT: |
1640 | case LTT_ENUM: |
1641 | /* Align offset on type size */ |
83e160f2 |
1642 | g_assert(field->field_size != 0); |
f104d082 |
1643 | return field->field_size; |
1644 | break; |
1645 | case LTT_STRING: |
83e160f2 |
1646 | return 1; |
f104d082 |
1647 | break; |
1648 | case LTT_ARRAY: |
1649 | g_assert(type->fields->len == 1); |
1650 | { |
1651 | LttField *child = &g_array_index(type->fields, LttField, 0); |
743e50fd |
1652 | return get_alignment(child); |
f104d082 |
1653 | } |
1654 | break; |
1655 | case LTT_SEQUENCE: |
1656 | g_assert(type->fields->len == 2); |
1657 | { |
83e160f2 |
1658 | off_t localign = 1; |
f104d082 |
1659 | LttField *child = &g_array_index(type->fields, LttField, 0); |
1660 | |
743e50fd |
1661 | localign = max(localign, get_alignment(child)); |
f104d082 |
1662 | |
1663 | child = &g_array_index(type->fields, LttField, 1); |
743e50fd |
1664 | localign = max(localign, get_alignment(child)); |
f104d082 |
1665 | |
1666 | return localign; |
1667 | } |
1668 | break; |
1669 | case LTT_STRUCT: |
1670 | case LTT_UNION: |
1671 | { |
1672 | guint i; |
83e160f2 |
1673 | off_t localign = 1; |
f104d082 |
1674 | |
1675 | for(i=0; i<type->fields->len; i++) { |
1676 | LttField *child = &g_array_index(type->fields, LttField, i); |
743e50fd |
1677 | localign = max(localign, get_alignment(child)); |
f104d082 |
1678 | } |
1679 | return localign; |
1680 | } |
1681 | break; |
1682 | case LTT_NONE: |
1683 | default: |
1684 | g_error("get_alignment : unknown type"); |
83e160f2 |
1685 | return -1; |
f104d082 |
1686 | } |
f104d082 |
1687 | } |
1688 | |
3c165eaf |
1689 | #endif //0 |
1690 | |
f104d082 |
1691 | /***************************************************************************** |
1692 | *Function name |
1693 | * field_compute_static_size : Determine the size of fields known by their |
1694 | * sole definition. Unions, arrays and struct sizes might be known, but |
1695 | * the parser does not give that information. |
1696 | *Input params |
1697 | * tf : tracefile |
1698 | * field : field |
1699 | * |
1700 | ****************************************************************************/ |
3c165eaf |
1701 | #if 0 |
743e50fd |
1702 | void field_compute_static_size(LttFacility *fac, LttField *field) |
f104d082 |
1703 | { |
2312de30 |
1704 | LttType *type = &field->field_type; |
f104d082 |
1705 | |
1706 | switch(type->type_class) { |
1707 | case LTT_INT_FIXED: |
1708 | case LTT_UINT_FIXED: |
1709 | case LTT_POINTER: |
1710 | case LTT_CHAR: |
1711 | case LTT_UCHAR: |
1712 | case LTT_SHORT: |
1713 | case LTT_USHORT: |
1714 | case LTT_INT: |
1715 | case LTT_UINT: |
1716 | case LTT_LONG: |
1717 | case LTT_ULONG: |
1718 | case LTT_SIZE_T: |
1719 | case LTT_SSIZE_T: |
1720 | case LTT_OFF_T: |
1721 | case LTT_FLOAT: |
1722 | case LTT_ENUM: |
1723 | case LTT_STRING: |
1724 | /* nothing to do */ |
1725 | break; |
1726 | case LTT_ARRAY: |
1727 | /* note this : array type size is the number of elements in the array, |
1728 | * while array field size of the length of the array in bytes */ |
1729 | g_assert(type->fields->len == 1); |
1730 | { |
1731 | LttField *child = &g_array_index(type->fields, LttField, 0); |
743e50fd |
1732 | field_compute_static_size(fac, child); |
f104d082 |
1733 | |
1734 | if(child->field_size != 0) { |
1735 | field->field_size = type->size * child->field_size; |
1736 | field->dynamic_offsets = g_array_sized_new(FALSE, TRUE, |
1737 | sizeof(off_t), type->size); |
1738 | } else { |
1739 | field->field_size = 0; |
1740 | } |
1741 | } |
1742 | break; |
1743 | case LTT_SEQUENCE: |
1744 | g_assert(type->fields->len == 2); |
1745 | { |
2312de30 |
1746 | off_t local_offset = 0; |
f104d082 |
1747 | LttField *child = &g_array_index(type->fields, LttField, 1); |
743e50fd |
1748 | field_compute_static_size(fac, child); |
f104d082 |
1749 | field->field_size = 0; |
1750 | type->size = 0; |
1751 | if(child->field_size != 0) { |
1752 | field->dynamic_offsets = g_array_sized_new(FALSE, TRUE, |
1753 | sizeof(off_t), SEQUENCE_AVG_ELEMENTS); |
1754 | } |
1755 | } |
1756 | break; |
1757 | case LTT_STRUCT: |
1758 | case LTT_UNION: |
1759 | { |
1760 | guint i; |
1761 | for(i=0;i<type->fields->len;i++) { |
1762 | LttField *child = &g_array_index(type->fields, LttField, i); |
743e50fd |
1763 | field_compute_static_size(fac, child); |
f104d082 |
1764 | if(child->field_size != 0) { |
743e50fd |
1765 | type->size += ltt_align(type->size, get_alignment(child), |
1766 | fac->alignment); |
f104d082 |
1767 | type->size += child->field_size; |
1768 | } else { |
1769 | /* As soon as we find a child with variable size, we have |
1770 | * a variable size */ |
1771 | type->size = 0; |
1772 | break; |
1773 | } |
1774 | } |
1775 | field->field_size = type->size; |
1776 | } |
1777 | break; |
1778 | default: |
1779 | g_error("field_static_size : unknown type"); |
2312de30 |
1780 | } |
f104d082 |
1781 | |
1782 | } |
3c165eaf |
1783 | #endif //0 |
f104d082 |
1784 | |
1785 | |
1786 | /***************************************************************************** |
1787 | *Function name |
1788 | * precompute_fields_offsets : set the precomputable offset of the fields |
1789 | *Input params |
743e50fd |
1790 | * fac : facility |
f104d082 |
1791 | * field : the field |
1792 | * offset : pointer to the current offset, must be incremented |
1793 | * |
1794 | * return : 1 : found a variable length field, stop the processing. |
1795 | * 0 otherwise. |
1796 | ****************************************************************************/ |
1797 | |
3c165eaf |
1798 | #if 0 |
dd3a6d39 |
1799 | gint precompute_fields_offsets(LttFacility *fac, LttField *field, off_t *offset, gint is_compact) |
f104d082 |
1800 | { |
2312de30 |
1801 | LttType *type = &field->field_type; |
dd3a6d39 |
1802 | |
1803 | if(unlikely(is_compact)) { |
1804 | g_assert(field->field_size != 0); |
1805 | /* FIXME THIS IS A HUUUUUGE hack : |
1806 | * offset is between the compact_data field in struct LttEvent |
1807 | * and the address of the field root in the memory map. |
1808 | * ark. Both will stay at the same addresses while the event |
1809 | * is readable, so it's ok. |
1810 | */ |
1811 | field->offset_root = 0; |
1812 | field->fixed_root = FIELD_FIXED; |
1813 | return 0; |
1814 | } |
f104d082 |
1815 | |
1816 | switch(type->type_class) { |
1817 | case LTT_INT_FIXED: |
1818 | case LTT_UINT_FIXED: |
1819 | case LTT_POINTER: |
1820 | case LTT_CHAR: |
1821 | case LTT_UCHAR: |
1822 | case LTT_SHORT: |
1823 | case LTT_USHORT: |
1824 | case LTT_INT: |
1825 | case LTT_UINT: |
1826 | case LTT_LONG: |
1827 | case LTT_ULONG: |
1828 | case LTT_SIZE_T: |
1829 | case LTT_SSIZE_T: |
1830 | case LTT_OFF_T: |
1831 | case LTT_FLOAT: |
1832 | case LTT_ENUM: |
743e50fd |
1833 | g_assert(field->field_size != 0); |
f104d082 |
1834 | /* Align offset on type size */ |
743e50fd |
1835 | *offset += ltt_align(*offset, get_alignment(field), |
1836 | fac->alignment); |
f104d082 |
1837 | /* remember offset */ |
1838 | field->offset_root = *offset; |
1839 | field->fixed_root = FIELD_FIXED; |
1840 | /* Increment offset */ |
1841 | *offset += field->field_size; |
1842 | return 0; |
1843 | break; |
1844 | case LTT_STRING: |
1845 | field->offset_root = *offset; |
1846 | field->fixed_root = FIELD_FIXED; |
1847 | return 1; |
1848 | break; |
1849 | case LTT_ARRAY: |
1850 | g_assert(type->fields->len == 1); |
1851 | { |
1852 | LttField *child = &g_array_index(type->fields, LttField, 0); |
1853 | |
743e50fd |
1854 | *offset += ltt_align(*offset, get_alignment(field), |
1855 | fac->alignment); |
f104d082 |
1856 | |
1857 | /* remember offset */ |
1858 | field->offset_root = *offset; |
1859 | field->array_offset = *offset; |
1860 | field->fixed_root = FIELD_FIXED; |
1861 | |
1862 | /* Let the child be variable */ |
1863 | //precompute_fields_offsets(tf, child, offset); |
1864 | |
1865 | if(field->field_size != 0) { |
1866 | /* Increment offset */ |
1867 | /* field_size is the array size in bytes */ |
1868 | *offset += field->field_size; |
1869 | return 0; |
1870 | } else { |
1871 | return 1; |
1872 | } |
1873 | } |
1874 | break; |
1875 | case LTT_SEQUENCE: |
1876 | g_assert(type->fields->len == 2); |
1877 | { |
1878 | LttField *child; |
1879 | guint ret; |
1880 | |
743e50fd |
1881 | *offset += ltt_align(*offset, get_alignment(field), |
1882 | fac->alignment); |
f104d082 |
1883 | |
1884 | /* remember offset */ |
1885 | field->offset_root = *offset; |
1886 | field->fixed_root = FIELD_FIXED; |
1887 | |
1888 | child = &g_array_index(type->fields, LttField, 0); |
dd3a6d39 |
1889 | ret = precompute_fields_offsets(fac, child, offset, is_compact); |
f104d082 |
1890 | g_assert(ret == 0); /* Seq len cannot have variable len */ |
1891 | |
1892 | child = &g_array_index(type->fields, LttField, 1); |
743e50fd |
1893 | *offset += ltt_align(*offset, get_alignment(child), |
1894 | fac->alignment); |
f104d082 |
1895 | field->array_offset = *offset; |
743e50fd |
1896 | /* Let the child be variable. */ |
1897 | //ret = precompute_fields_offsets(fac, child, offset); |
f104d082 |
1898 | |
1899 | /* Cannot precompute fields offsets of sequence members, and has |
1900 | * variable length. */ |
1901 | return 1; |
1902 | } |
1903 | break; |
1904 | case LTT_STRUCT: |
1905 | { |
1906 | LttField *child; |
1907 | guint i; |
1908 | gint ret=0; |
1909 | |
743e50fd |
1910 | *offset += ltt_align(*offset, get_alignment(field), |
1911 | fac->alignment); |
f104d082 |
1912 | /* remember offset */ |
1913 | field->offset_root = *offset; |
1914 | field->fixed_root = FIELD_FIXED; |
1915 | |
1916 | for(i=0; i< type->fields->len; i++) { |
1917 | child = &g_array_index(type->fields, LttField, i); |
dd3a6d39 |
1918 | ret = precompute_fields_offsets(fac, child, offset, is_compact); |
f104d082 |
1919 | |
1920 | if(ret) break; |
1921 | } |
1922 | return ret; |
1923 | } |
1924 | break; |
1925 | case LTT_UNION: |
1926 | { |
1927 | LttField *child; |
1928 | guint i; |
1929 | gint ret=0; |
1930 | |
743e50fd |
1931 | *offset += ltt_align(*offset, get_alignment(field), |
1932 | fac->alignment); |
f104d082 |
1933 | /* remember offset */ |
1934 | field->offset_root = *offset; |
1935 | field->fixed_root = FIELD_FIXED; |
1936 | |
1937 | for(i=0; i< type->fields->len; i++) { |
1938 | *offset = field->offset_root; |
1939 | child = &g_array_index(type->fields, LttField, i); |
dd3a6d39 |
1940 | ret = precompute_fields_offsets(fac, child, offset, is_compact); |
f104d082 |
1941 | |
1942 | if(ret) break; |
1943 | } |
1944 | *offset = field->offset_root + field->field_size; |
1945 | return ret; |
1946 | } |
1947 | |
1948 | break; |
1949 | case LTT_NONE: |
1950 | default: |
1951 | g_error("precompute_fields_offsets : unknown type"); |
1952 | return 1; |
1953 | } |
1954 | |
1955 | } |
1956 | |
3c165eaf |
1957 | #endif //0 |
f104d082 |
1958 | |
3c165eaf |
1959 | #if 0 |
f104d082 |
1960 | /***************************************************************************** |
1961 | *Function name |
1962 | * precompute_offsets : set the precomputable offset of an event type |
1963 | *Input params |
1964 | * tf : tracefile |
1965 | * event : event type |
1966 | * |
1967 | ****************************************************************************/ |
743e50fd |
1968 | void precompute_offsets(LttFacility *fac, LttEventType *event) |
f104d082 |
1969 | { |
1970 | guint i; |
1971 | off_t offset = 0; |
1972 | gint ret; |
1973 | |
1974 | /* First, compute the size of fixed size fields. Will determine size for |
1975 | * arrays, struct and unions, which is not done by the parser */ |
1976 | for(i=0; i<event->fields->len; i++) { |
1977 | LttField *field = &g_array_index(event->fields, LttField, i); |
743e50fd |
1978 | field_compute_static_size(fac, field); |
f104d082 |
1979 | } |
1980 | |
1981 | /* Precompute all known offsets */ |
1982 | for(i=0; i<event->fields->len; i++) { |
1983 | LttField *field = &g_array_index(event->fields, LttField, i); |
dd3a6d39 |
1984 | if(event->has_compact_data && i == 0) |
1985 | ret = precompute_fields_offsets(fac, field, &offset, 1); |
1986 | else |
1987 | ret = precompute_fields_offsets(fac, field, &offset, 0); |
f104d082 |
1988 | if(ret) break; |
1989 | } |
1990 | } |
3c165eaf |
1991 | #endif //0 |
f104d082 |
1992 | |
e4eced0f |
1993 | |
bbf28e50 |
1994 | |
3aee1200 |
1995 | /***************************************************************************** |
1996 | *Function name |
1997 | * preset_field_type_size : set the fixed sizes of the field type |
1998 | *Input params |
1999 | * tf : tracefile |
2000 | * event_type : event type |
2001 | * offset_root : offset from the root |
2002 | * offset_parent : offset from the parent |
2003 | * fixed_root : Do we know a fixed offset to the root ? |
2004 | * fixed_parent : Do we know a fixed offset to the parent ? |
2005 | * field : field |
2006 | ****************************************************************************/ |
f104d082 |
2007 | |
2008 | |
2009 | |
2010 | // preset the fixed size offsets. Calculate them just like genevent-new : an |
2011 | // increment of a *to value that represents the offset from the start of the |
2012 | // event data. |
2013 | // The preset information is : offsets up to (and including) the first element |
2014 | // of variable size. All subsequent fields must be flagged "VARIABLE OFFSET". |
2015 | #if 0 |
3aee1200 |
2016 | void preset_field_type_size(LttTracefile *tf, LttEventType *event_type, |
2017 | off_t offset_root, off_t offset_parent, |
2018 | enum field_status *fixed_root, enum field_status *fixed_parent, |
2019 | LttField *field) |
2020 | { |
2021 | enum field_status local_fixed_root, local_fixed_parent; |
2022 | guint i; |
2023 | LttType *type; |
dfb73233 |
2024 | |
3aee1200 |
2025 | g_assert(field->fixed_root == FIELD_UNKNOWN); |
2026 | g_assert(field->fixed_parent == FIELD_UNKNOWN); |
2027 | g_assert(field->fixed_size == FIELD_UNKNOWN); |
dfb73233 |
2028 | |
3aee1200 |
2029 | type = field->field_type; |
2030 | |
2031 | field->fixed_root = *fixed_root; |
2032 | if(field->fixed_root == FIELD_FIXED) |
2033 | field->offset_root = offset_root; |
2034 | else |
2035 | field->offset_root = 0; |
2036 | |
2037 | field->fixed_parent = *fixed_parent; |
2038 | if(field->fixed_parent == FIELD_FIXED) |
2039 | field->offset_parent = offset_parent; |
2040 | else |
2041 | field->offset_parent = 0; |
2042 | |
2043 | size_t current_root_offset; |
2044 | size_t current_offset; |
2045 | enum field_status current_child_status, final_child_status; |
2046 | size_t max_size; |
2047 | |
2048 | switch(type->type_class) { |
83e160f2 |
2049 | case LTT_INT_FIXED: |
2050 | case LTT_UINT_FIXED: |
2051 | case LTT_CHAR: |
2052 | case LTT_UCHAR: |
2053 | case LTT_SHORT: |
2054 | case LTT_USHORT: |
3aee1200 |
2055 | case LTT_INT: |
2056 | case LTT_UINT: |
2057 | case LTT_FLOAT: |
2058 | case LTT_ENUM: |
2059 | field->field_size = ltt_type_size(tf->trace, type); |
2060 | field->fixed_size = FIELD_FIXED; |
2061 | break; |
2062 | case LTT_POINTER: |
2063 | field->field_size = (off_t)event_type->facility->pointer_size; |
2064 | field->fixed_size = FIELD_FIXED; |
2065 | break; |
2066 | case LTT_LONG: |
2067 | case LTT_ULONG: |
cb03932a |
2068 | field->field_size = (off_t)event_type->facility->long_size; |
3aee1200 |
2069 | field->fixed_size = FIELD_FIXED; |
2070 | break; |
2071 | case LTT_SIZE_T: |
2072 | case LTT_SSIZE_T: |
2073 | case LTT_OFF_T: |
2074 | field->field_size = (off_t)event_type->facility->size_t_size; |
2075 | field->fixed_size = FIELD_FIXED; |
2076 | break; |
2077 | case LTT_SEQUENCE: |
2078 | local_fixed_root = FIELD_VARIABLE; |
2079 | local_fixed_parent = FIELD_VARIABLE; |
2080 | preset_field_type_size(tf, event_type, |
2081 | 0, 0, |
2082 | &local_fixed_root, &local_fixed_parent, |
2083 | field->child[0]); |
2084 | field->fixed_size = FIELD_VARIABLE; |
2085 | field->field_size = 0; |
27304273 |
2086 | *fixed_root = FIELD_VARIABLE; |
2087 | *fixed_parent = FIELD_VARIABLE; |
3aee1200 |
2088 | break; |
2089 | case LTT_STRING: |
2090 | field->fixed_size = FIELD_VARIABLE; |
2091 | field->field_size = 0; |
27304273 |
2092 | *fixed_root = FIELD_VARIABLE; |
2093 | *fixed_parent = FIELD_VARIABLE; |
3aee1200 |
2094 | break; |
2095 | case LTT_ARRAY: |
2096 | local_fixed_root = FIELD_VARIABLE; |
2097 | local_fixed_parent = FIELD_VARIABLE; |
2098 | preset_field_type_size(tf, event_type, |
2099 | 0, 0, |
2100 | &local_fixed_root, &local_fixed_parent, |
2101 | field->child[0]); |
2102 | field->fixed_size = field->child[0]->fixed_size; |
27304273 |
2103 | if(field->fixed_size == FIELD_FIXED) { |
3aee1200 |
2104 | field->field_size = type->element_number * field->child[0]->field_size; |
27304273 |
2105 | } else { |
3aee1200 |
2106 | field->field_size = 0; |
27304273 |
2107 | *fixed_root = FIELD_VARIABLE; |
2108 | *fixed_parent = FIELD_VARIABLE; |
2109 | } |
3aee1200 |
2110 | break; |
2111 | case LTT_STRUCT: |
2112 | current_root_offset = field->offset_root; |
2113 | current_offset = 0; |
2114 | current_child_status = FIELD_FIXED; |
2115 | for(i=0;i<type->element_number;i++) { |
2116 | preset_field_type_size(tf, event_type, |
2117 | current_root_offset, current_offset, |
2118 | fixed_root, ¤t_child_status, |
2119 | field->child[i]); |
2120 | if(current_child_status == FIELD_FIXED) { |
2121 | current_root_offset += field->child[i]->field_size; |
2122 | current_offset += field->child[i]->field_size; |
2123 | } else { |
2124 | current_root_offset = 0; |
2125 | current_offset = 0; |
2126 | } |
2127 | } |
2128 | if(current_child_status != FIELD_FIXED) { |
2129 | *fixed_parent = current_child_status; |
2130 | field->field_size = 0; |
2131 | field->fixed_size = current_child_status; |
2132 | } else { |
2133 | field->field_size = current_offset; |
2134 | field->fixed_size = FIELD_FIXED; |
2135 | } |
2136 | break; |
2137 | case LTT_UNION: |
2138 | current_root_offset = field->offset_root; |
2139 | current_offset = 0; |
2140 | max_size = 0; |
2141 | final_child_status = FIELD_FIXED; |
2142 | for(i=0;i<type->element_number;i++) { |
2143 | enum field_status current_root_child_status = FIELD_FIXED; |
2144 | enum field_status current_child_status = FIELD_FIXED; |
2145 | preset_field_type_size(tf, event_type, |
2146 | current_root_offset, current_offset, |
2147 | ¤t_root_child_status, ¤t_child_status, |
2148 | field->child[i]); |
2149 | if(current_child_status != FIELD_FIXED) |
2150 | final_child_status = current_child_status; |
2151 | else |
2152 | max_size = max(max_size, field->child[i]->field_size); |
2153 | } |
2154 | if(final_child_status != FIELD_FIXED) { |
62e4e7bf |
2155 | g_error("LTTV does not support variable size fields in unions."); |
2156 | /* This will stop the application. */ |
3aee1200 |
2157 | *fixed_root = final_child_status; |
2158 | *fixed_parent = final_child_status; |
2159 | field->field_size = 0; |
2160 | field->fixed_size = current_child_status; |
2161 | } else { |
2162 | field->field_size = max_size; |
2163 | field->fixed_size = FIELD_FIXED; |
2164 | } |
2165 | break; |
83e160f2 |
2166 | case LTT_NONE: |
2167 | g_error("unexpected type NONE"); |
2168 | break; |
dfb73233 |
2169 | } |
2170 | |
6cd62ccf |
2171 | } |
f104d082 |
2172 | #endif //0 |
3aee1200 |
2173 | |
77175651 |
2174 | /***************************************************************************** |
2175 | *Function name |
2176 | * check_fields_compatibility : Check for compatibility between two fields : |
2177 | * do they use the same inner structure ? |
2178 | *Input params |
2179 | * event_type1 : event type |
2180 | * event_type2 : event type |
2181 | * field1 : field |
2182 | * field2 : field |
2183 | *Returns : 0 if identical |
2184 | * 1 if not. |
2185 | ****************************************************************************/ |
f104d082 |
2186 | // this function checks for equality of field types. Therefore, it does not use |
2187 | // per se offsets. For instance, an aligned version of a structure is |
2188 | // compatible with an unaligned version of the same structure. |
3c165eaf |
2189 | #if 0 |
f104d082 |
2190 | gint check_fields_compatibility(LttEventType *event_type1, |
2191 | LttEventType *event_type2, |
2192 | LttField *field1, LttField *field2) |
2193 | { |
2194 | guint different = 0; |
2312de30 |
2195 | LttType *type1; |
2196 | LttType *type2; |
f104d082 |
2197 | |
2198 | if(field1 == NULL) { |
2199 | if(field2 == NULL) goto end; |
2200 | else { |
2201 | different = 1; |
2202 | goto end; |
2203 | } |
2204 | } else if(field2 == NULL) { |
2205 | different = 1; |
2206 | goto end; |
2207 | } |
2208 | |
2312de30 |
2209 | type1 = &field1->field_type; |
2210 | type2 = &field2->field_type; |
f104d082 |
2211 | |
2212 | if(type1->type_class != type2->type_class) { |
2213 | different = 1; |
2214 | goto end; |
2215 | } |
62e4e7bf |
2216 | if(type1->network != type2->network) { |
2217 | different = 1; |
2218 | goto end; |
2219 | } |
f104d082 |
2220 | |
2221 | switch(type1->type_class) { |
2222 | case LTT_INT_FIXED: |
2223 | case LTT_UINT_FIXED: |
2224 | case LTT_POINTER: |
2225 | case LTT_CHAR: |
2226 | case LTT_UCHAR: |
2227 | case LTT_SHORT: |
2228 | case LTT_USHORT: |
2229 | case LTT_INT: |
2230 | case LTT_UINT: |
2231 | case LTT_LONG: |
2232 | case LTT_ULONG: |
2233 | case LTT_SIZE_T: |
2234 | case LTT_SSIZE_T: |
2235 | case LTT_OFF_T: |
2236 | case LTT_FLOAT: |
2237 | case LTT_ENUM: |
2238 | if(field1->field_size != field2->field_size) |
2239 | different = 1; |
2240 | break; |
2241 | case LTT_STRING: |
2242 | break; |
2243 | case LTT_ARRAY: |
2244 | { |
2245 | LttField *child1 = &g_array_index(type1->fields, LttField, 0); |
2246 | LttField *child2 = &g_array_index(type2->fields, LttField, 0); |
2247 | |
2248 | if(type1->size != type2->size) |
2249 | different = 1; |
2250 | if(check_fields_compatibility(event_type1, event_type2, child1, child2)) |
2251 | different = 1; |
2252 | } |
2253 | break; |
2254 | case LTT_SEQUENCE: |
2255 | { |
2256 | LttField *child1 = &g_array_index(type1->fields, LttField, 1); |
2257 | LttField *child2 = &g_array_index(type2->fields, LttField, 1); |
2258 | |
2259 | if(check_fields_compatibility(event_type1, event_type2, child1, child2)) |
2260 | different = 1; |
2261 | } |
2262 | break; |
2263 | case LTT_STRUCT: |
2264 | case LTT_UNION: |
2265 | { |
2266 | LttField *child; |
2267 | guint i; |
2268 | |
2269 | if(type1->fields->len != type2->fields->len) { |
2270 | different = 1; |
2271 | goto end; |
2272 | } |
2273 | |
2274 | for(i=0; i< type1->fields->len; i++) { |
2312de30 |
2275 | LttField *child1; |
2276 | LttField *child2; |
f104d082 |
2277 | child1 = &g_array_index(type1->fields, LttField, i); |
2278 | child2 = &g_array_index(type2->fields, LttField, i); |
2279 | different = check_fields_compatibility(event_type1, |
2280 | event_type2, child1, child2); |
2281 | |
2282 | if(different) break; |
2283 | } |
2284 | } |
2285 | break; |
2286 | case LTT_NONE: |
2287 | default: |
dd3a6d39 |
2288 | g_error("check_fields_compatibility : unknown type"); |
f104d082 |
2289 | } |
2290 | |
2291 | end: |
2292 | return different; |
2293 | } |
3c165eaf |
2294 | #endif //0 |
f104d082 |
2295 | |
2296 | #if 0 |
77175651 |
2297 | gint check_fields_compatibility(LttEventType *event_type1, |
2298 | LttEventType *event_type2, |
2299 | LttField *field1, LttField *field2) |
2300 | { |
2301 | guint different = 0; |
77175651 |
2302 | guint i; |
2303 | LttType *type1; |
2304 | LttType *type2; |
2305 | |
2306 | if(field1 == NULL) { |
2307 | if(field2 == NULL) goto end; |
2308 | else { |
2309 | different = 1; |
2310 | goto end; |
2311 | } |
2312 | } else if(field2 == NULL) { |
2313 | different = 1; |
2314 | goto end; |
2315 | } |
2316 | |
2317 | g_assert(field1->fixed_root != FIELD_UNKNOWN); |
2318 | g_assert(field2->fixed_root != FIELD_UNKNOWN); |
2319 | g_assert(field1->fixed_parent != FIELD_UNKNOWN); |
2320 | g_assert(field2->fixed_parent != FIELD_UNKNOWN); |
2321 | g_assert(field1->fixed_size != FIELD_UNKNOWN); |
2322 | g_assert(field2->fixed_size != FIELD_UNKNOWN); |
2323 | |
2324 | type1 = field1->field_type; |
2325 | type2 = field2->field_type; |
2326 | |
77175651 |
2327 | if(type1->type_class != type2->type_class) { |
2328 | different = 1; |
2329 | goto end; |
2330 | } |
2331 | if(type1->element_name != type2->element_name) { |
2332 | different = 1; |
2333 | goto end; |
2334 | } |
2335 | |
2336 | switch(type1->type_class) { |
83e160f2 |
2337 | case LTT_INT_FIXED: |
2338 | case LTT_UINT_FIXED: |
2339 | case LTT_POINTER: |
2340 | case LTT_CHAR: |
2341 | case LTT_UCHAR: |
2342 | case LTT_SHORT: |
2343 | case LTT_USHORT: |
77175651 |
2344 | case LTT_INT: |
2345 | case LTT_UINT: |
2346 | case LTT_FLOAT: |
2347 | case LTT_POINTER: |
2348 | case LTT_LONG: |
2349 | case LTT_ULONG: |
2350 | case LTT_SIZE_T: |
2351 | case LTT_SSIZE_T: |
2352 | case LTT_OFF_T: |
2353 | if(field1->field_size != field2->field_size) { |
2354 | different = 1; |
2355 | goto end; |
2356 | } |
2357 | break; |
2358 | case LTT_ENUM: |
2359 | if(type1->element_number != type2->element_number) { |
2360 | different = 1; |
2361 | goto end; |
2362 | } |
2363 | for(i=0;i<type1->element_number;i++) { |
2364 | if(type1->enum_strings[i] != type2->enum_strings[i]) { |
2365 | different = 1; |
2366 | goto end; |
2367 | } |
2368 | } |
2369 | break; |
2370 | case LTT_SEQUENCE: |
2371 | /* Two elements : size and child */ |
2372 | g_assert(type1->element_number != type2->element_number); |
2373 | for(i=0;i<type1->element_number;i++) { |
2374 | if(check_fields_compatibility(event_type1, event_type2, |
2375 | field1->child[0], field2->child[0])) { |
2376 | different = 1; |
2377 | goto end; |
2378 | } |
2379 | } |
2380 | break; |
2381 | case LTT_STRING: |
2382 | break; |
2383 | case LTT_ARRAY: |
2384 | if(field1->field_size != field2->field_size) { |
2385 | different = 1; |
2386 | goto end; |
2387 | } |
2388 | /* Two elements : size and child */ |
2389 | g_assert(type1->element_number != type2->element_number); |
2390 | for(i=0;i<type1->element_number;i++) { |
2391 | if(check_fields_compatibility(event_type1, event_type2, |
2392 | field1->child[0], field2->child[0])) { |
2393 | different = 1; |
2394 | goto end; |
2395 | } |
2396 | } |
2397 | break; |
2398 | case LTT_STRUCT: |
2399 | case LTT_UNION: |
2400 | if(type1->element_number != type2->element_number) { |
2401 | different = 1; |
2402 | break; |
2403 | } |
2404 | for(i=0;i<type1->element_number;i++) { |
2405 | if(check_fields_compatibility(event_type1, event_type2, |
2406 | field1->child[0], field2->child[0])) { |
2407 | different = 1; |
2408 | goto end; |
2409 | } |
2410 | } |
2411 | break; |
2412 | } |
2413 | end: |
2414 | return different; |
2415 | } |
3aee1200 |
2416 | #endif //0 |
6cd62ccf |
2417 | |
f104d082 |
2418 | |
6cd62ccf |
2419 | /***************************************************************************** |
2420 | *Function name |
eed2ef37 |
2421 | * ltt_get_int : get an integer number |
6cd62ccf |
2422 | *Input params |
3aee1200 |
2423 | * reverse_byte_order: must we reverse the byte order ? |
6cd62ccf |
2424 | * size : the size of the integer |
3aee1200 |
2425 | * ptr : the data pointer |
6cd62ccf |
2426 | *Return value |
cf74a6f1 |
2427 | * gint64 : a 64 bits integer |
6cd62ccf |
2428 | ****************************************************************************/ |
2429 | |
eed2ef37 |
2430 | gint64 ltt_get_int(gboolean reverse_byte_order, gint size, void *data) |
6cd62ccf |
2431 | { |
3aee1200 |
2432 | gint64 val; |
cf74a6f1 |
2433 | |
2434 | switch(size) { |
3aee1200 |
2435 | case 1: val = *((gint8*)data); break; |
2436 | case 2: val = ltt_get_int16(reverse_byte_order, data); break; |
2437 | case 4: val = ltt_get_int32(reverse_byte_order, data); break; |
2438 | case 8: val = ltt_get_int64(reverse_byte_order, data); break; |
2439 | default: val = ltt_get_int64(reverse_byte_order, data); |
2440 | g_critical("get_int : integer size %d unknown", size); |
cf74a6f1 |
2441 | break; |
2442 | } |
2443 | |
3aee1200 |
2444 | return val; |
6cd62ccf |
2445 | } |
3aee1200 |
2446 | |
6cd62ccf |
2447 | /***************************************************************************** |
2448 | *Function name |
eed2ef37 |
2449 | * ltt_get_uint : get an unsigned integer number |
6cd62ccf |
2450 | *Input params |
3aee1200 |
2451 | * reverse_byte_order: must we reverse the byte order ? |
2452 | * size : the size of the integer |
2453 | * ptr : the data pointer |
2454 | *Return value |
2455 | * guint64 : a 64 bits unsigned integer |
6cd62ccf |
2456 | ****************************************************************************/ |
2457 | |
eed2ef37 |
2458 | guint64 ltt_get_uint(gboolean reverse_byte_order, gint size, void *data) |
6cd62ccf |
2459 | { |
3aee1200 |
2460 | guint64 val; |
2461 | |
2462 | switch(size) { |
2463 | case 1: val = *((gint8*)data); break; |
2464 | case 2: val = ltt_get_uint16(reverse_byte_order, data); break; |
2465 | case 4: val = ltt_get_uint32(reverse_byte_order, data); break; |
2466 | case 8: val = ltt_get_uint64(reverse_byte_order, data); break; |
2467 | default: val = ltt_get_uint64(reverse_byte_order, data); |
2468 | g_critical("get_uint : unsigned integer size %d unknown", |
2469 | size); |
2470 | break; |
2471 | } |
2472 | |
2473 | return val; |
6cd62ccf |
2474 | } |
3aee1200 |
2475 | |
2476 | |
a5dcde2f |
2477 | /* get the node name of the system */ |
2478 | |
2479 | char * ltt_trace_system_description_node_name (LttSystemDescription * s) |
2480 | { |
2481 | return s->node_name; |
2482 | } |
2483 | |
2484 | |
2485 | /* get the domain name of the system */ |
2486 | |
2487 | char * ltt_trace_system_description_domain_name (LttSystemDescription * s) |
2488 | { |
2489 | return s->domain_name; |
2490 | } |
2491 | |
2492 | |
2493 | /* get the description of the system */ |
2494 | |
2495 | char * ltt_trace_system_description_description (LttSystemDescription * s) |
2496 | { |
2497 | return s->description; |
2498 | } |
2499 | |
2500 | |
bf33dd50 |
2501 | /* get the NTP corrected start time of the trace */ |
7bd563ec |
2502 | LttTime ltt_trace_start_time(LttTrace *t) |
a5dcde2f |
2503 | { |
7bd563ec |
2504 | return t->start_time; |
a5dcde2f |
2505 | } |
2506 | |
bf33dd50 |
2507 | /* get the monotonic start time of the trace */ |
2508 | LttTime ltt_trace_start_time_monotonic(LttTrace *t) |
2509 | { |
2510 | return t->start_time_from_tsc; |
2511 | } |
2512 | |
8655430b |
2513 | static LttTracefile *ltt_tracefile_new() |
18206708 |
2514 | { |
afd57a3c |
2515 | LttTracefile *tf; |
2516 | tf = g_new(LttTracefile, 1); |
2517 | tf->event.tracefile = tf; |
2518 | return tf; |
18206708 |
2519 | } |
2520 | |
8655430b |
2521 | static void ltt_tracefile_destroy(LttTracefile *tf) |
18206708 |
2522 | { |
2523 | g_free(tf); |
2524 | } |
2525 | |
8655430b |
2526 | static void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src) |
18206708 |
2527 | { |
2528 | *dest = *src; |
2529 | } |
2530 | |
3aee1200 |
2531 | /* Before library loading... */ |
2532 | |
8655430b |
2533 | static __attribute__((constructor)) void init(void) |
3aee1200 |
2534 | { |
2fc874ab |
2535 | LTT_TRACEFILE_NAME_METADATA = g_quark_from_string("/control/metadata"); |
3aee1200 |
2536 | } |