6cd62ccf |
1 | #include <stdio.h> |
2 | #include <fcntl.h> |
3 | #include <sys/stat.h> |
4 | #include <sys/types.h> |
5 | #include <linux/errno.h> |
6 | |
7 | #include "LTTTypes.h" |
8 | #include "parser.h" |
9 | #include <ltt/tracefile.h> |
10 | |
11 | #include "default.h" //yxx test |
12 | |
13 | /* set the offset of the fields belonging to the event, |
14 | need the information of the archecture */ |
15 | void setFieldsOffset(ltt_tracefile * t, ltt_eventtype *evT, void *evD); |
16 | |
17 | /* get the size of the field type according to the archtecture's |
18 | size and endian type(info of the archecture) */ |
19 | int getFieldtypeSize(ltt_tracefile * t, ltt_eventtype * evT, int offsetRoot, |
20 | int offsetParent, ltt_field * fld, void * evD ); |
21 | |
22 | /* read a fixed size or a block information from the file (fd) */ |
23 | int readFile(int fd, void * buf, size_t size, char * mesg); |
24 | int readBlock(ltt_tracefile * tf, int whichBlock); |
25 | |
26 | /* calculate cycles per nsec for current block */ |
27 | void getCyclePerNsec(ltt_tracefile * t); |
28 | |
29 | /* functions to release the memory occupied by the tables of a tracefile */ |
30 | void freeKey (gpointer key, gpointer value, gpointer user_data); |
31 | void freeValue (gpointer key, gpointer value, gpointer user_data); |
32 | void freeFacilityNameTable (gpointer key, gpointer value, gpointer user_data); |
33 | |
34 | /* reinitialize the info of the block which is already in the buffer */ |
35 | void updateTracefile(ltt_tracefile * tf); |
36 | |
37 | /* go to the next event */ |
38 | int skipEvent(ltt_tracefile * t); |
39 | |
40 | /* compare two time (ltt_time), 0:t1=t2, -1:t1<t2, 1:t1>t2 */ |
41 | int timecmp(ltt_time * t1, ltt_time * t2); |
42 | |
43 | /* get an integer number */ |
44 | int getIntNumber(int size1, void *evD); |
45 | |
46 | |
47 | /* Time operation macros for ltt_time (struct timespec) */ |
48 | /* (T3 = T2 - T1) */ |
49 | #define TimeSub(T3, T2, T1) \ |
50 | do \ |
51 | {\ |
52 | (T3).tv_sec = (T2).tv_sec - (T1).tv_sec; \ |
53 | (T3).tv_nsec = (T2).tv_nsec - (T1).tv_nsec; \ |
54 | if((T3).tv_nsec < 0)\ |
55 | {\ |
56 | (T3).tv_sec--;\ |
57 | (T3).tv_nsec += 1000000000;\ |
58 | }\ |
59 | } while(0) |
60 | |
61 | /* (T3 = T2 + T1) */ |
62 | #define TimeAdd(T3, T2, T1) \ |
63 | do \ |
64 | {\ |
65 | (T3).tv_sec = (T2).tv_sec + (T1).tv_sec; \ |
66 | (T3).tv_nsec = (T2).tv_nsec + (T1).tv_nsec; \ |
67 | if((T3).tv_nsec >= 1000000000)\ |
68 | {\ |
69 | (T3).tv_sec += (T3).tv_nsec / 1000000000;\ |
70 | (T3).tv_nsec = (T3).tv_nsec % 1000000000;\ |
71 | }\ |
72 | } while(0) |
73 | |
74 | |
75 | |
76 | /***************************************************************************** |
77 | *Function name |
78 | * ltt_tracefile_open : open a trace file, construct a ltt_tracefile |
79 | *Input params |
80 | * pathname : path name of the trace file |
81 | *Return value |
82 | * ltt_tracefile * : the structure represents the opened trace file |
83 | ****************************************************************************/ |
84 | |
85 | ltt_tracefile *ltt_tracefile_open(char * fileName) |
86 | { |
87 | ltt_tracefile * tf; |
88 | struct stat lTDFStat; /* Trace data file status */ |
89 | trace_header_event *trace_header; |
90 | block_header a_block_header; |
91 | |
92 | tf = g_new(ltt_tracefile, 1); |
93 | |
94 | //open the file |
95 | tf->fd = open(fileName, O_RDONLY, 0); |
96 | if(tf->fd < 0){ |
97 | g_error("Unable to open input data file %s\n", fileName); |
98 | } |
99 | |
100 | // Get the file's status |
101 | if(fstat(tf->fd, &lTDFStat) < 0){ |
102 | g_error("Unable to get the status of the input data file %s\n", fileName); |
103 | } |
104 | |
105 | // Is the file large enough to contain a trace |
106 | if(lTDFStat.st_size < sizeof(block_header) + sizeof(trace_header_event)){ |
107 | g_error("The input data file %s does not contain a trace\n", fileName); |
108 | } |
109 | |
110 | //store the size of the file |
111 | tf->file_size = lTDFStat.st_size; |
112 | |
113 | //read the first block header |
114 | if(readFile(tf->fd,(void*)&a_block_header, sizeof(block_header), |
115 | "Unable to read block header")) |
116 | exit(1); |
117 | |
118 | //read the trace header event |
119 | trace_header = g_new(trace_header_event, 1); |
120 | if(readFile(tf->fd,(void*)trace_header, sizeof(trace_header_event), |
121 | "Unable to read trace header event")) |
122 | exit(1); |
123 | |
124 | tf->block_number = tf->file_size / trace_header->buffer_size; |
125 | tf->trace_header = (trace_header_event *)trace_header; |
126 | |
127 | //allocate memory to contain the info of a block |
128 | tf->buffer = (void *) g_new(char, trace_header->buffer_size); |
129 | |
130 | //read the last block, get the trace end time |
131 | if(readBlock(tf,tf->block_number)) exit(1); |
132 | tf->end_time = tf->a_block_footer->time; |
133 | |
134 | //read the first block, get the trace start time |
135 | if(tf->block_number != 1) |
136 | if(readBlock(tf,1)) exit(1); |
137 | tf->start_time = tf->a_block_header->time; |
138 | |
139 | //get local machine's data type size and endian type |
140 | getDataEndianType(&(tf->my_arch_size), &(tf->my_arch_endian)); |
141 | |
142 | //initialize all tables |
143 | tf->eventtype_number = 0; |
144 | tf->facility_number = 0; |
145 | tf->index_facility = g_hash_table_new (g_int_hash, g_int_equal); |
146 | tf->facility_name = g_hash_table_new (g_str_hash, g_str_equal); |
147 | tf->base_id_name = g_hash_table_new (g_str_hash, g_int_equal); |
148 | tf->eventtype_event_id = g_ptr_array_new(); |
149 | |
150 | return tf; |
151 | } |
152 | |
153 | /***************************************************************************** |
154 | *Function name |
155 | * ltt_tracefile_close: close a trace file, release all facilities if their |
156 | * usage count == 0 when close_facilities is true |
157 | *Input params |
158 | * t : tracefile which will be closed |
159 | * close_facilities : bool to show if the facilities need to be released |
160 | *Return value |
161 | * int : ???? |
162 | ****************************************************************************/ |
163 | |
164 | int ltt_tracefile_close(ltt_tracefile *t, int close_facilities) |
165 | { |
166 | //free index_facility table |
167 | g_hash_table_foreach (t->index_facility, freeKey, NULL); |
168 | g_hash_table_destroy(t->index_facility); |
169 | |
170 | //free base_id_facility table |
171 | g_hash_table_foreach (t->base_id_name, freeValue, NULL); |
172 | g_hash_table_destroy(t->base_id_name); |
173 | |
174 | //free eventtype_event_id array |
175 | g_ptr_array_free (t->eventtype_event_id, TRUE); |
176 | |
177 | //free facility_name table |
178 | g_hash_table_foreach (t->facility_name, freeFacilityNameTable, |
179 | GINT_TO_POINTER(1)); |
180 | g_hash_table_destroy(t->facility_name); |
181 | |
182 | //free tracefile structure |
183 | g_free(t->trace_header); |
184 | g_free(t->buffer); |
185 | g_free(t); |
186 | return 0; |
187 | } |
188 | |
189 | /***************************************************************************** |
190 | * functions to release the memory occupied by the tables of a tracefile |
191 | ****************************************************************************/ |
192 | |
193 | void freeKey (gpointer key, gpointer value, gpointer user_data) |
194 | { |
195 | g_free(key); |
196 | } |
197 | |
198 | void freeValue (gpointer key, gpointer value, gpointer user_data) |
199 | { |
200 | g_free(value); |
201 | } |
202 | |
203 | void freeFacilityNameTable (gpointer key, gpointer value, gpointer user_data) |
204 | { |
205 | ltt_facility * fac = (ltt_facility*) value; |
206 | fac->usage_count--; |
207 | if(GPOINTER_TO_INT(user_data) != 0) |
208 | ltt_facility_close(fac); |
209 | } |
210 | |
211 | /***************************************************************************** |
212 | *Function name |
213 | * ltt_tracefile_facility_add: increases the facility usage count and also |
214 | * specifies the base of the numeric range |
215 | * assigned to the event types in the facility |
216 | * for this tracefile |
217 | *Input params |
218 | * t : tracefile that the facility will be added |
219 | * f : facility that will be attached to the tracefile |
220 | * base_id : the id for the first event of the facility in the |
221 | * trace file |
222 | *Return value |
223 | * int : ???? |
224 | ****************************************************************************/ |
225 | |
226 | int ltt_tracefile_facility_add(ltt_tracefile *t,ltt_facility *f,int base_id) |
227 | { |
228 | int * id, *index; |
229 | int i, j, k; |
230 | ltt_eventtype * et; |
231 | gpointer tmpPtr; |
232 | |
233 | //increase the facility usage count |
234 | f->usage_count++; |
235 | t->eventtype_number += f->event_number; |
236 | t->facility_number++; |
237 | |
238 | //insert the facility into index_facility table |
239 | id = g_new(int,1); |
240 | *id = t->facility_number; |
241 | g_hash_table_insert(t->index_facility, (gpointer)id,(gpointer)f); |
242 | |
243 | //insert facility name into table: base_id_name |
244 | id = g_new(int,1); |
245 | *id = base_id; |
246 | g_hash_table_insert(t->base_id_name, (gpointer)(f->name), (gpointer)id); |
247 | |
248 | //insert facility name into table: facility_name |
249 | g_hash_table_insert(t->facility_name, (gpointer)(f->name), (gpointer)f); |
250 | |
251 | //insert eventtype into the array: eventtype_event_id |
252 | j = base_id + f->event_number; |
253 | k = t->eventtype_event_id->len; |
254 | if(j > t->eventtype_event_id->len){ |
255 | for(i=0; i < j - k; i++){ |
256 | tmpPtr = (gpointer)g_new(ptr_wrap, 1); |
257 | g_ptr_array_add(t->eventtype_event_id,tmpPtr); |
258 | } |
259 | } |
260 | |
261 | //initialize the unused elements: NULL |
262 | if(j-k > f->event_number){ |
263 | for(i=k; i<base_id; i++){ |
264 | tmpPtr = g_ptr_array_index(t->eventtype_event_id, i); |
265 | ((ptr_wrap*)tmpPtr)->ptr = NULL; |
266 | } |
267 | } |
268 | |
269 | //initialize the elements with the eventtypes belonging to the facility |
270 | for(i=0; i<f->event_number; i++){ |
271 | tmpPtr = g_ptr_array_index(t->eventtype_event_id, base_id + i); |
272 | ((ptr_wrap*)tmpPtr)->ptr = (gpointer)(f->events[i]); |
273 | } |
274 | |
275 | //update offset |
276 | for(i=0; i<f->event_number; i++){ |
277 | et = f->events[i]; |
278 | setFieldsOffset(t, et, NULL); |
279 | } |
280 | |
281 | |
282 | return 0; |
283 | } |
284 | |
285 | /***************************************************************************** |
286 | * The following functions used to query the info of the machine where the |
287 | * tracefile was generated. A tracefile may be queried for its architecture |
288 | * type(e.g.,"i386", "powerpc", "powerpcle", "s390", "s390x"), its architecture |
289 | * variant(e.g., "att" versus "sun" for m68k), its operating system (e.g., |
290 | * "linux","bsd"), its generic architecture, and the machine identity (e.g., |
291 | * system host name). All character strings belong to the associated tracefile |
292 | * and are freed when it is closed |
293 | ****************************************************************************/ |
294 | |
295 | uint32_t ltt_tracefile_arch_type(ltt_tracefile *t) |
296 | { |
297 | return t->trace_header->arch_type; |
298 | } |
299 | |
300 | uint32_t ltt_tracefile_arch_variant(ltt_tracefile *t) |
301 | { |
302 | return t->trace_header->arch_variant; |
303 | } |
304 | |
305 | ltt_arch_size ltt_tracefile_arch_size(ltt_tracefile *t) |
306 | { |
307 | return t->trace_header->arch_size; |
308 | } |
309 | |
310 | ltt_arch_endian ltt_tracefile_arch_endian(ltt_tracefile *t) |
311 | { |
312 | return t->trace_header->arch_endian; |
313 | } |
314 | |
315 | uint32_t ltt_tracefile_system_type(ltt_tracefile *t) |
316 | { |
317 | return t->trace_header->system_type; |
318 | } |
319 | |
320 | char *ltt_tracefile_system_name(ltt_tracefile *t) |
321 | { |
322 | return t->trace_header->system_name; |
323 | } |
324 | |
325 | /***************************************************************************** |
326 | *Function name |
327 | * ltt_tracefile_cpu_number: get the number of the cpu |
328 | *Input params |
329 | * t : tracefile |
330 | *Return value |
331 | * unsigned : the number of cpu the system has |
332 | ****************************************************************************/ |
333 | |
334 | unsigned ltt_tracefile_cpu_number(ltt_tracefile *t) |
335 | { |
336 | return (unsigned)(t->trace_header->cpu_number); |
337 | } |
338 | |
339 | /***************************************************************************** |
340 | *Function name |
341 | * ltt_tracefile_cpu_single: does the tracefile contain events only for a |
342 | * single CPU ? |
343 | *Input params |
344 | * t : tracefile |
345 | *Return value |
346 | * int : 1 for YES, 0 for NO |
347 | ****************************************************************************/ |
348 | |
349 | int ltt_tracefile_cpu_single(ltt_tracefile *t) |
350 | { |
351 | if(t->trace_header->cpu_number_used == 1) return 1; |
352 | else return 0; |
353 | } |
354 | |
355 | /***************************************************************************** |
356 | *Function name |
357 | * ltt_tracefile_cpu_id: which CPU is contained in the tracefile? |
358 | *Input params |
359 | * t : tracefile |
360 | *Return value |
361 | * unsigned : cpu id |
362 | ****************************************************************************/ |
363 | |
364 | unsigned ltt_tracefile_cpu_id(ltt_tracefile *t) |
365 | { |
366 | return (unsigned)(t->trace_header->cpu_id); |
367 | } |
368 | |
369 | /***************************************************************************** |
370 | * The following functions get the times related to the tracefile |
371 | ****************************************************************************/ |
372 | |
373 | ltt_time ltt_tracefile_time_start(ltt_tracefile *t) |
374 | { |
375 | return t->start_time; |
376 | } |
377 | |
378 | ltt_time ltt_tracefile_time_end(ltt_tracefile *t) |
379 | { |
380 | return t->end_time; |
381 | } |
382 | |
383 | ltt_time ltt_tracefile_duration(ltt_tracefile *t) |
384 | { |
385 | ltt_time T; |
386 | TimeSub(T, t->end_time, t->start_time); |
387 | return T; |
388 | } |
389 | |
390 | /***************************************************************************** |
391 | * The following functions discover the facilities added to the tracefile |
392 | ****************************************************************************/ |
393 | |
394 | unsigned ltt_tracefile_facility_number(ltt_tracefile *t) |
395 | { |
396 | return (unsigned)(t->facility_number); |
397 | } |
398 | |
399 | ltt_facility *ltt_tracefile_facility_get(ltt_tracefile *t, unsigned i) |
400 | { |
401 | gconstpointer ptr = (gconstpointer)(&i); |
402 | if(i<=0 || i> t->facility_number)return NULL; |
403 | return (ltt_facility*)g_hash_table_lookup(t->index_facility,ptr); |
404 | } |
405 | |
406 | ltt_facility *ltt_tracefile_facility_get_by_name(ltt_tracefile *t,char *name) |
407 | { |
408 | ltt_facility * fac; |
409 | fac=(ltt_facility*)g_hash_table_lookup(t->facility_name,(gconstpointer)name); |
410 | return fac; |
411 | } |
412 | |
413 | /***************************************************************************** |
414 | * The following functions to discover all the event types in the facilities |
415 | * added to the tracefile. The event type integer id, unique for the trace, |
416 | * is used |
417 | ****************************************************************************/ |
418 | |
419 | unsigned ltt_tracefile_eventtype_number(ltt_tracefile *t) |
420 | { |
421 | return t->eventtype_number; |
422 | } |
423 | |
424 | ltt_eventtype *ltt_tracefile_eventtype_get(ltt_tracefile *t, unsigned evId) |
425 | { |
426 | ptr_wrap * ptr; |
427 | ptr = (ptr_wrap *)g_ptr_array_index(t->eventtype_event_id, (gint)evId); |
428 | return (ltt_eventtype *)(ptr->ptr); |
429 | } |
430 | |
431 | /***************************************************************************** |
432 | *Function name |
433 | * ltt_tracefile_eventtype_id |
434 | * : given an event type, find its unique id within |
435 | * the tracefile |
436 | *Input params |
437 | * t : tracefile |
438 | * et : event type |
439 | *Return value |
440 | * unsigned : id of the event type in the tracefile |
441 | ****************************************************************************/ |
442 | |
443 | unsigned ltt_tracefile_eventtype_id(ltt_tracefile *t, ltt_eventtype *et) |
444 | { |
445 | int *id; |
446 | char *name = et->facility->name; |
447 | |
448 | id = (int*)g_hash_table_lookup(t->base_id_name, (gconstpointer)name); |
449 | if(!id)return 0; |
450 | return (unsigned)(*id + et->index); |
451 | } |
452 | |
453 | /***************************************************************************** |
454 | *Function name |
455 | * ltt_tracefile_eventtype_root_field |
456 | * : get the root field associated with an event type |
457 | * for the tracefile |
458 | *Input params |
459 | * t : tracefile |
460 | * id : event id |
461 | *Return value |
462 | * ltt_field * : root field of the event |
463 | ****************************************************************************/ |
464 | |
465 | ltt_field *ltt_tracefile_eventtype_root_field(ltt_tracefile *t, unsigned id) |
466 | { |
467 | ltt_eventtype * et; |
468 | et = ltt_tracefile_eventtype_get(t, id); |
469 | if(!et) return NULL; |
470 | return et->root_field; |
471 | } |
472 | |
473 | /***************************************************************************** |
474 | *Function name |
475 | * ltt_tracefile_seek_time: seek to the first event of the trace with time |
476 | * larger or equal to time |
477 | *Input params |
478 | * t : tracefile |
479 | * time : criteria of the time |
480 | *Return value |
481 | * int : error code |
482 | * ENOENT, end of the file |
483 | * EINVAL, lseek fail |
484 | * EIO, can not read from the file |
485 | ****************************************************************************/ |
486 | |
487 | int ltt_tracefile_seek_time(ltt_tracefile *t, ltt_time time) |
488 | { |
489 | int err; |
490 | ltt_time lttTime; |
491 | int headTime = timecmp(&(t->a_block_header->time), &time); |
492 | int tailTime = timecmp(&(t->a_block_footer->time), &time); |
493 | |
494 | if(headTime < 0 && tailTime > 0){ |
495 | lttTime = getEventTime(t); |
496 | err = timecmp(<tTime, &time); |
497 | if(err >= 0){ |
498 | if( ( (t->which_block != 1 && t->which_event != 0) || |
499 | (t->which_block == 1 && t->which_event != 1) ) && |
500 | ((t->prev_event_time.tv_sec==0 && t->prev_event_time.tv_nsec==0) || |
501 | timecmp(&t->prev_event_time, &time) >= 0 ) ){ |
502 | updateTracefile(t); |
503 | return ltt_tracefile_seek_time(t, time); |
504 | } |
505 | }else if(err < 0){ |
506 | err = t->which_block; |
507 | if(ltt_tracefile_read(t) == NULL) return ENOENT; |
508 | if(t->which_block == err) |
509 | return ltt_tracefile_seek_time(t,time); |
510 | } |
511 | }else if(headTime > 0){ |
512 | if(t->which_block == 1){ |
513 | updateTracefile(t); |
514 | }else{ |
515 | if( (t->prev_block_end_time.tv_sec == 0 && |
516 | t->prev_block_end_time.tv_nsec == 0 ) || |
517 | timecmp(&(t->prev_block_end_time),&time) > 0 ){ |
518 | err=readBlock(t,t->which_block-1); |
519 | if(err) return err; |
520 | return ltt_tracefile_seek_time(t, time) ; |
521 | }else{ |
522 | updateTracefile(t); |
523 | } |
524 | } |
525 | }else if(tailTime <= 0){ |
526 | if(t->which_block != t->block_number){ |
527 | err=readBlock(t,t->which_block+1); |
528 | if(err) return err; |
529 | }else return ENOENT; |
530 | if(tailTime < 0) return ltt_tracefile_seek_time(t, time); |
531 | }else if(headTime == 0){ |
532 | updateTracefile(t); |
533 | } |
534 | return 0; |
535 | } |
536 | |
537 | /***************************************************************************** |
538 | *Function name |
539 | * ltt_tracefile_read : read the next event |
540 | *Input params |
541 | * t : tracefile |
542 | *Return value |
543 | * ltt_event * : an event to be processed |
544 | ****************************************************************************/ |
545 | |
546 | ltt_event *ltt_tracefile_read(ltt_tracefile *t) |
547 | { |
548 | ltt_event * lttEvent = (ltt_event *)g_new(ltt_event, 1); |
549 | ltt_eventtype * evT; |
550 | ltt_facility * fac; |
551 | |
552 | //update the fields of the current event and go to the next event |
553 | if(skipEvent(t)) return NULL; |
554 | |
555 | t->current_event_time = getEventTime(t); |
556 | |
557 | lttEvent->event_id = (int)(*(uint8_t *)(t->cur_event_pos)); |
558 | evT = ltt_tracefile_eventtype_get(t, (unsigned)lttEvent->event_id); |
559 | fac = evT->facility; |
560 | if(evT->index == TRACE_EV_HEARTBEAT && strcmp(fac->name, "default")==0) |
561 | t->cur_heart_beat_number++; |
562 | lttEvent->cycle_count=*(uint32_t*)(t->cur_event_pos + EVENT_ID_SIZE); |
563 | lttEvent->tracefile = t; |
564 | lttEvent->data = t->cur_event_pos + EVENT_HEADER_SIZE; |
565 | |
566 | return lttEvent; |
567 | } |
568 | |
569 | /**************************************************************************** |
570 | *Function name |
571 | * readFile : wrap function to read from a file |
572 | *Input Params |
573 | * fd : file descriptor |
574 | * buf : buf to contain the content |
575 | * size : number of bytes to be read |
576 | * mesg : message to be printed if some thing goes wrong |
577 | *return value |
578 | * 0 : success |
579 | * EIO : can not read from the file |
580 | ****************************************************************************/ |
581 | |
582 | int readFile(int fd, void * buf, size_t size, char * mesg) |
583 | { |
584 | ssize_t nbBytes; |
585 | nbBytes = read(fd, buf, size); |
586 | if(nbBytes != size){ |
587 | printf("%s\n",mesg); |
588 | return EIO; |
589 | } |
590 | return 0; |
591 | } |
592 | |
593 | /**************************************************************************** |
594 | *Function name |
595 | * readBlock : read a block from the file |
596 | *Input Params |
597 | * lttdes : ltt trace file |
598 | * whichBlock : the block which will be read |
599 | *return value |
600 | * 0 : success |
601 | * EINVAL : lseek fail |
602 | * EIO : can not read from the file |
603 | ****************************************************************************/ |
604 | |
605 | int readBlock(ltt_tracefile * tf, int whichBlock) |
606 | { |
607 | off_t nbBytes; |
608 | uint32_t lostSize; |
609 | |
610 | if(whichBlock - tf->which_block == 1 && tf->which_block != 0){ |
611 | tf->prev_block_end_time = tf->a_block_footer->time; |
612 | }else{ |
613 | tf->prev_block_end_time.tv_sec = 0; |
614 | tf->prev_block_end_time.tv_nsec = 0; |
615 | } |
616 | tf->prev_event_time.tv_sec = 0; |
617 | tf->prev_event_time.tv_nsec = 0; |
618 | |
619 | nbBytes=lseek(tf->fd,(off_t)((whichBlock-1)*tf->trace_header->buffer_size), |
620 | SEEK_SET); |
621 | if(nbBytes == -1) return EINVAL; |
622 | |
623 | if(readFile(tf->fd,tf->buffer,tf->trace_header->buffer_size, |
624 | "Unable to read a block")) return EIO; |
625 | |
626 | |
627 | tf->a_block_header=(block_header *) tf->buffer; |
628 | lostSize = *(uint32_t*)(tf->buffer + tf->trace_header->buffer_size |
629 | - sizeof(uint32_t)); |
630 | /* skip event ID and time delta to get the address of the block foot */ |
631 | tf->a_block_footer=(block_footer *)(tf->buffer+tf->trace_header->buffer_size |
632 | -lostSize+sizeof(uint8_t)+sizeof(uint32_t)); |
633 | tf->which_block = whichBlock; |
634 | tf->which_event = 0; |
635 | tf->first_event_pos = tf->buffer + sizeof(block_header); |
636 | if(tf->which_block == 1){ |
637 | tf->which_event++; |
638 | tf->first_event_pos += sizeof(trace_header_event); |
639 | } |
640 | tf->cur_event_pos = tf->first_event_pos; |
641 | tf->current_event_time = tf->a_block_header->time; |
642 | tf->cur_heart_beat_number = 0; |
643 | |
644 | getCyclePerNsec(tf); |
645 | |
646 | return 0; |
647 | } |
648 | |
649 | /***************************************************************************** |
650 | *Function name |
651 | * updateTracefile : reinitialize the info of the block which is already |
652 | * in the buffer |
653 | *Input params |
654 | * tf : tracefile |
655 | ****************************************************************************/ |
656 | |
657 | void updateTracefile(ltt_tracefile * tf) |
658 | { |
659 | if(tf->which_block == 1)tf->which_event = 1; |
660 | else tf->which_event = 0; |
661 | tf->cur_event_pos = tf->first_event_pos; |
662 | tf->current_event_time = tf->a_block_header->time; |
663 | tf->cur_heart_beat_number = 0; |
664 | |
665 | tf->prev_event_time.tv_sec = 0; |
666 | tf->prev_event_time.tv_nsec = 0; |
667 | } |
668 | |
669 | /***************************************************************************** |
670 | *Function name |
671 | * skipEvent : go to the next event, update the fields of the current event |
672 | *Input params |
673 | * t : tracefile |
674 | *return value |
675 | * 0 : success |
676 | * EINVAL : lseek fail |
677 | * EIO : can not read from the file |
678 | * ENOENT : end of file |
679 | * ERANGE : event id is out of range |
680 | ****************************************************************************/ |
681 | |
682 | int skipEvent(ltt_tracefile * t) |
683 | { |
684 | int evId, err; |
685 | void * evData; |
686 | ltt_eventtype * evT; |
687 | ltt_field * rootFld; |
688 | |
689 | evId = (int)(*(uint8_t *)(t->cur_event_pos)); |
690 | evData = t->cur_event_pos + EVENT_HEADER_SIZE; |
691 | evT = ltt_tracefile_eventtype_get(t,(unsigned)evId); |
692 | |
693 | if(evT) rootFld = evT->root_field; |
694 | else return ERANGE; |
695 | |
696 | t->prev_event_time = getEventTime(t); |
697 | |
698 | //event has string/sequence or the last event is not the same event |
699 | if((evT->latest_block!=t->which_block || evT->latest_event!=t->which_event) |
700 | && rootFld->field_fixed == 0){ |
701 | setFieldsOffset(t, evT, evData); |
702 | } |
703 | t->cur_event_pos += EVENT_HEADER_SIZE + rootFld->field_size; |
704 | |
705 | evT->latest_block = t->which_block; |
706 | evT->latest_event = t->which_event; |
707 | |
708 | //the next event is in the next block |
709 | if(t->which_event == t->a_block_header->event_count - 1){ |
710 | if(t->which_block == t->block_number) return ENOENT; |
711 | err = readBlock(t, t->which_block + 1); |
712 | if(err) return err; |
713 | }else{ |
714 | t->which_event++; |
715 | } |
716 | |
717 | return 0; |
718 | } |
719 | |
720 | /***************************************************************************** |
721 | *Function name |
722 | * getCyclePerNsec : calculate cycles per nsec for current block |
723 | *Input Params |
724 | * t : tracefile |
725 | ****************************************************************************/ |
726 | |
727 | void getCyclePerNsec(ltt_tracefile * t) |
728 | { |
729 | ltt_time lBufTotalTime; /* Total time for this buffer */ |
730 | ltt_cycle_count lBufTotalNSec; /* Total time for this buffer in nsecs */ |
731 | ltt_cycle_count lBufTotalCycle;/* Total cycles for this buffer */ |
732 | |
733 | /* Calculate the total time for this buffer */ |
734 | TimeSub(lBufTotalTime,t->a_block_footer->time, t->a_block_header->time); |
735 | |
736 | /* Calculate the total cycles for this bufffer */ |
737 | lBufTotalCycle = t->a_block_footer->cycle_count |
738 | - t->a_block_header->cycle_count; |
739 | |
740 | /* Convert the total time to nsecs */ |
741 | lBufTotalNSec = lBufTotalTime.tv_sec * 1000000000 + lBufTotalTime.tv_nsec; |
742 | |
743 | t->cycle_per_nsec = (double)lBufTotalCycle / (double)lBufTotalNSec; |
744 | } |
745 | |
746 | /**************************************************************************** |
747 | *Function name |
748 | * getEventTime : obtain the time of an event |
749 | *Input params |
750 | * tf : tracefile |
751 | *Return value |
752 | * ltt_time : the time of the event |
753 | ****************************************************************************/ |
754 | |
755 | ltt_time getEventTime(ltt_tracefile * tf) |
756 | { |
757 | ltt_time time; |
758 | ltt_cycle_count cycle_count; /* cycle count for the current event */ |
759 | ltt_cycle_count lEventTotalCycle; /* Total cycles from start for event */ |
760 | double lEventNSec; /* Total usecs from start for event */ |
761 | ltt_time lTimeOffset; /* Time offset in struct ltt_time */ |
762 | |
763 | /* Calculate total time in cycles from start of buffer for this event */ |
764 | cycle_count = *(uint32_t*)(tf->cur_event_pos + EVENT_ID_SIZE); |
765 | if(tf->cur_heart_beat_number) |
766 | cycle_count += ((uint64_t)1)<<32 * tf->cur_heart_beat_number; |
767 | lEventTotalCycle=cycle_count-(tf->a_block_header->cycle_count & 0xFFFFFFFF); |
768 | |
769 | /* Convert it to nsecs */ |
770 | lEventNSec = lEventTotalCycle / tf->cycle_per_nsec; |
771 | |
772 | /* Determine offset in struct ltt_time */ |
773 | lTimeOffset.tv_nsec = (long)lEventNSec % 1000000000; |
774 | lTimeOffset.tv_sec = (long)lEventNSec / 1000000000; |
775 | |
776 | TimeAdd(time, tf->a_block_header->time, lTimeOffset); |
777 | |
778 | return time; |
779 | } |
780 | |
781 | /***************************************************************************** |
782 | *Function name |
783 | * setFieldsOffset : set offset of the fields |
784 | *Input params |
785 | * tracefile : opened trace file |
786 | * evT : the event type |
787 | * evD : event data, it may be NULL |
788 | ****************************************************************************/ |
789 | |
790 | void setFieldsOffset(ltt_tracefile * t, ltt_eventtype * evT, void * evD) |
791 | { |
792 | ltt_field * rootFld = evT->root_field; |
793 | // rootFld->base_address = evD; |
794 | |
795 | rootFld->field_size = getFieldtypeSize(t, evT, 0,0,rootFld, evD); |
796 | } |
797 | |
798 | /***************************************************************************** |
799 | *Function name |
800 | * getFieldtypeSize: get the size of the field type (primitive type) |
801 | *Input params |
802 | * tracefile : opened trace file |
803 | * evT : event type |
804 | * offsetRoot : offset from the root |
805 | * offsetParent : offset from the parrent |
806 | * fld : field |
807 | * evD : event data, it may be NULL |
808 | *Return value |
809 | * int : size of the field |
810 | ****************************************************************************/ |
811 | |
812 | int getFieldtypeSize(ltt_tracefile * t, ltt_eventtype * evT, int offsetRoot, |
813 | int offsetParent, ltt_field * fld, void * evD) |
814 | { |
815 | int size, size1, element_number, i, offset1, offset2; |
816 | ltt_type * type = fld->field_type; |
817 | |
818 | if(evT->latest_block==t->which_block && evT->latest_event==t->which_event){ |
819 | return fld->field_size; |
820 | } |
821 | |
822 | if(fld->field_fixed == 1){ |
823 | if(fld == evT->root_field) return fld->field_size; |
824 | } |
825 | |
826 | if(type->type_class != LTT_STRUCT && type->type_class != LTT_ARRAY && |
827 | type->type_class != LTT_SEQUENCE && type->type_class != LTT_STRING){ |
828 | if(fld->field_fixed == -1){ |
829 | size = (int) ltt_type_size(t, type); |
830 | fld->field_fixed = 1; |
831 | }else size = fld->field_size; |
832 | |
833 | }else if(type->type_class == LTT_ARRAY){ |
834 | element_number = (int) type->element_number; |
835 | if(fld->field_fixed == -1){ |
836 | size = getFieldtypeSize(t, evT, offsetRoot,0,fld->child[0], NULL); |
837 | if(size == 0){ //has string or sequence |
838 | fld->field_fixed = 0; |
839 | }else{ |
840 | fld->field_fixed = 1; |
841 | size *= element_number; |
842 | } |
843 | }else if(fld->field_fixed == 0){// has string or sequence |
844 | size = 0; |
845 | for(i=0;i<element_number;i++){ |
846 | size += getFieldtypeSize(t, evT, offsetRoot+size,size, |
847 | fld->child[0], evD+size); |
848 | } |
849 | }else size = fld->field_size; |
850 | |
851 | }else if(type->type_class == LTT_SEQUENCE){ |
852 | size1 = (int) ltt_type_size(t, type); |
853 | if(fld->field_fixed == -1){ |
854 | fld->field_fixed = 0; |
855 | size = getFieldtypeSize(t, evT, offsetRoot,0,fld->child[0], NULL); |
856 | fld->element_size = size; |
857 | }else{//0: sequence |
858 | element_number = getIntNumber(size1,evD); |
859 | type->element_number = element_number; |
860 | if(fld->element_size > 0){ |
861 | size = element_number * fld->element_size; |
862 | }else{//sequence has string or sequence |
863 | size = 0; |
864 | for(i=0;i<element_number;i++){ |
865 | size += getFieldtypeSize(t, evT, offsetRoot+size+size1,size+size1, |
866 | fld->child[0], evD+size+size1); |
867 | } |
868 | } |
869 | size += size1; |
870 | } |
871 | |
872 | }else if(type->type_class == LTT_STRING){ |
873 | size = 0; |
874 | if(fld->field_fixed == -1){ |
875 | fld->field_fixed = 0; |
876 | }else{//0: string |
877 | size = sizeof((char*)evD) + 1; //include end : '\0' |
878 | } |
879 | |
880 | }else if(type->type_class == LTT_STRUCT){ |
881 | element_number = (int) type->element_number; |
882 | size = 0; |
883 | if(fld->field_fixed == -1){ |
884 | offset1 = offsetRoot; |
885 | offset2 = 0; |
886 | for(i=0;i<element_number;i++){ |
887 | size1=getFieldtypeSize(t, evT,offset1,offset2, fld->child[i], NULL); |
888 | if(size1 > 0 && size >= 0){ |
889 | size += size1; |
890 | if(offset1 >= 0) offset1 += size1; |
891 | offset2 += size1; |
892 | }else{ |
893 | size = -1; |
894 | offset1 = -1; |
895 | offset2 = -1; |
896 | } |
897 | } |
898 | if(size == -1){ |
899 | fld->field_fixed = 0; |
900 | size = 0; |
901 | }else fld->field_fixed = 1; |
902 | }else if(fld->field_fixed == 0){ |
903 | offset1 = offsetRoot; |
904 | offset2 = 0; |
905 | for(i=0;i<element_number;i++){ |
906 | size=getFieldtypeSize(t,evT,offset1,offset2,fld->child[i],evD+offset2); |
907 | offset1 += size; |
908 | offset2 += size; |
909 | } |
910 | size = offset2; |
911 | }else size = fld->field_size; |
912 | } |
913 | |
914 | fld->offset_root = offsetRoot; |
915 | fld->offset_parent = offsetParent; |
916 | if(!evD){ |
917 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
918 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
919 | } |
920 | fld->field_size = size; |
921 | |
922 | return size; |
923 | } |
924 | |
925 | /***************************************************************************** |
926 | *Function name |
927 | * timecmp : compare two time |
928 | *Input params |
929 | * t1 : first time |
930 | * t2 : second time |
931 | *Return value |
932 | * int : 0: t1 == t2; -1: t1 < t2; 1: t1 > t2 |
933 | ****************************************************************************/ |
934 | |
935 | int timecmp(ltt_time * t1, ltt_time * t2) |
936 | { |
937 | ltt_time T; |
938 | TimeSub(T, *t1, *t2); |
939 | if(T.tv_sec == 0 && T.tv_nsec == 0) return 0; |
940 | else if(T.tv_sec > 0 || (T.tv_sec==0 && T.tv_nsec > 0)) return 1; |
941 | else return -1; |
942 | } |
943 | |
944 | /***************************************************************************** |
945 | *Function name |
946 | * getIntNumber : get an integer number |
947 | *Input params |
948 | * size : the size of the integer |
949 | * evD : the event data |
950 | *Return value |
951 | * int : an integer |
952 | ****************************************************************************/ |
953 | |
954 | int getIntNumber(int size, void *evD) |
955 | { |
956 | int64_t i; |
957 | if(size == 1) i = *(int8_t *)evD; |
958 | else if(size == 2) i = *(int16_t *)evD; |
959 | else if(size == 4) i = *(int32_t *)evD; |
960 | else if(size == 8) i = *(int64_t *)evD; |
961 | |
962 | return (int) i; |
963 | } |
964 | |
965 | /***************************************************************************** |
966 | *Function name |
967 | * getDataEndianType : get the data type size and endian type of the local |
968 | * machine |
969 | *Input params |
970 | * size : size of data type |
971 | * endian : endian type, little or big |
972 | ****************************************************************************/ |
973 | |
974 | void getDataEndianType(ltt_arch_size * size, ltt_arch_endian * endian) |
975 | { |
976 | int i = 1; |
977 | char c = (char) i; |
978 | int sizeInt=sizeof(int), sizeLong=sizeof(long), sizePointer=sizeof(void *); |
979 | |
980 | if(c == 1) *endian = LTT_LITTLE_ENDIAN; |
981 | else *endian = LTT_BIG_ENDIAN; |
982 | |
983 | if(sizeInt == 2 && sizeLong == 4 && sizePointer == 4) |
984 | *size = LTT_LP32; |
985 | else if(sizeInt == 4 && sizeLong == 4 && sizePointer == 4) |
986 | *size = LTT_ILP32; |
987 | else if(sizeInt == 4 && sizeLong == 8 && sizePointer == 8) |
988 | *size = LTT_LP64; |
989 | else if(sizeInt == 8 && sizeLong == 8 && sizePointer == 8) |
990 | *size = LTT_ILP64; |
991 | else *size = LTT_UNKNOWN; |
992 | } |
993 | |