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1/* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Xiangxiu Yang
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License Version 2 as
6 * published by the Free Software Foundation;
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
16 * MA 02111-1307, USA.
17 */
18
19#include <stdio.h>
20#include <fcntl.h>
21#include <sys/stat.h>
22#include <sys/types.h>
23#include <dirent.h>
24#include <linux/errno.h>
25
26// For realpath
27#include <limits.h>
28#include <stdlib.h>
29
30
31#include "parser.h"
32#include <ltt/ltt.h>
33#include "ltt-private.h"
34#include <ltt/trace.h>
35#include <ltt/facility.h>
36
37#define DIR_NAME_SIZE 256
38
39/* set the offset of the fields belonging to the event,
40 need the information of the archecture */
41void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace *t);
42
43/* get the size of the field type according to the archtecture's
44 size and endian type(info of the archecture) */
45int getFieldtypeSize(LttTracefile * tf, LttEventType * evT, int offsetRoot,
46 int offsetParent, LttField *fld, void *evD, LttTrace* t);
47
48/* read a fixed size or a block information from the file (fd) */
49int readFile(int fd, void * buf, size_t size, char * mesg);
50int readBlock(LttTracefile * tf, int whichBlock);
51
52/* calculate cycles per nsec for current block */
53void getCyclePerNsec(LttTracefile * t);
54
55/* reinitialize the info of the block which is already in the buffer */
56void updateTracefile(LttTracefile * tf);
57
58/* go to the next event */
59int skipEvent(LttTracefile * t);
60
61
62/* Functions to parse system.xml file (using glib xml parser) */
63static void parser_start_element (GMarkupParseContext *context,
64 const gchar *element_name,
65 const gchar **attribute_names,
66 const gchar **attribute_values,
67 gpointer user_data,
68 GError **error)
69{
70 int i=0;
71 LttSystemDescription* des = (LttSystemDescription* )user_data;
72 if(strcmp("system", element_name)){
73 *error = g_error_new(G_MARKUP_ERROR,
74 G_LOG_LEVEL_WARNING,
75 "This is not system.xml file");
76 return;
77 }
78
79 while(attribute_names[i]){
80 if(strcmp("node_name", attribute_names[i])==0){
81 des->node_name = g_strdup(attribute_values[i]);
82 }else if(strcmp("domainname", attribute_names[i])==0){
83 des->domain_name = g_strdup(attribute_values[i]);
84 }else if(strcmp("cpu", attribute_names[i])==0){
85 des->nb_cpu = atoi(attribute_values[i]);
86 }else if(strcmp("arch_size", attribute_names[i])==0){
87 if(strcmp(attribute_values[i],"LP32") == 0) des->size = LTT_LP32;
88 else if(strcmp(attribute_values[i],"ILP32") == 0) des->size = LTT_ILP32;
89 else if(strcmp(attribute_values[i],"LP64") == 0) des->size = LTT_LP64;
90 else if(strcmp(attribute_values[i],"ILP64") == 0) des->size = LTT_ILP64;
91 else if(strcmp(attribute_values[i],"UNKNOWN") == 0) des->size = LTT_UNKNOWN;
92 }else if(strcmp("endian", attribute_names[i])==0){
93 if(strcmp(attribute_values[i],"LITTLE_ENDIAN") == 0)
94 des->endian = LTT_LITTLE_ENDIAN;
95 else if(strcmp(attribute_values[i],"BIG_ENDIAN") == 0)
96 des->endian = LTT_BIG_ENDIAN;
97 }else if(strcmp("kernel_name", attribute_names[i])==0){
98 des->kernel_name = g_strdup(attribute_values[i]);
99 }else if(strcmp("kernel_release", attribute_names[i])==0){
100 des->kernel_release = g_strdup(attribute_values[i]);
101 }else if(strcmp("kernel_version", attribute_names[i])==0){
102 des->kernel_version = g_strdup(attribute_values[i]);
103 }else if(strcmp("machine", attribute_names[i])==0){
104 des->machine = g_strdup(attribute_values[i]);
105 }else if(strcmp("processor", attribute_names[i])==0){
106 des->processor = g_strdup(attribute_values[i]);
107 }else if(strcmp("hardware_platform", attribute_names[i])==0){
108 des->hardware_platform = g_strdup(attribute_values[i]);
109 }else if(strcmp("operating_system", attribute_names[i])==0){
110 des->operating_system = g_strdup(attribute_values[i]);
111 }else if(strcmp("ltt_major_version", attribute_names[i])==0){
112 des->ltt_major_version = atoi(attribute_values[i]);
113 }else if(strcmp("ltt_minor_version", attribute_names[i])==0){
114 des->ltt_minor_version = atoi(attribute_values[i]);
115 }else if(strcmp("ltt_block_size", attribute_names[i])==0){
116 des->ltt_block_size = atoi(attribute_values[i]);
117 }else{
118 *error = g_error_new(G_MARKUP_ERROR,
119 G_LOG_LEVEL_WARNING,
120 "Not a valid attribute");
121 return;
122 }
123 i++;
124 }
125}
126
127static void parser_end_element (GMarkupParseContext *context,
128 const gchar *element_name,
129 gpointer user_data,
130 GError **error)
131{
132}
133
134static void parser_characters (GMarkupParseContext *context,
135 const gchar *text,
136 gsize text_len,
137 gpointer user_data,
138 GError **error)
139{
140 LttSystemDescription* des = (LttSystemDescription* )user_data;
141 des->description = g_strdup(text);
142}
143
144
145/*****************************************************************************
146 *Function name
147 * ltt_tracefile_open : open a trace file, construct a LttTracefile
148 *Input params
149 * t : the trace containing the tracefile
150 * fileName : path name of the trace file
151 *Return value
152 * : a pointer to a tracefile
153 ****************************************************************************/
154
155LttTracefile* ltt_tracefile_open(LttTrace * t, char * fileName)
156{
157 LttTracefile * tf;
158 struct stat lTDFStat; /* Trace data file status */
159 BlockStart a_block_start;
160
161 tf = g_new(LttTracefile, 1);
162
163 //open the file
164 tf->name = g_strdup(fileName);
165 tf->trace = t;
166 tf->fd = open(fileName, O_RDONLY, 0);
167 if(tf->fd < 0){
168 g_warning("Unable to open input data file %s\n", fileName);
169 g_free(tf->name);
170 g_free(tf);
171 return NULL;
172 }
173
174 // Get the file's status
175 if(fstat(tf->fd, &lTDFStat) < 0){
176 g_warning("Unable to get the status of the input data file %s\n", fileName);
177 g_free(tf->name);
178 close(tf->fd);
179 g_free(tf);
180 return NULL;
181 }
182
183 // Is the file large enough to contain a trace
184 if(lTDFStat.st_size < sizeof(BlockStart) + EVENT_HEADER_SIZE){
185 g_print("The input data file %s does not contain a trace\n", fileName);
186 g_free(tf->name);
187 close(tf->fd);
188 g_free(tf);
189 return NULL;
190 }
191
192 //store the size of the file
193 tf->file_size = lTDFStat.st_size;
194 tf->block_size = t->system_description->ltt_block_size;
195 tf->block_number = tf->file_size / tf->block_size;
196 tf->which_block = 0;
197
198 //allocate memory to contain the info of a block
199 tf->buffer = (void *) g_new(char, t->system_description->ltt_block_size);
200
201 //read the first block
202 if(readBlock(tf,1)) exit(1);
203
204 return tf;
205}
206
207
208/*****************************************************************************
209 *Open control and per cpu tracefiles
210 ****************************************************************************/
211
212void ltt_tracefile_open_cpu(LttTrace *t, char * tracefile_name)
213{
214 LttTracefile * tf;
215 tf = ltt_tracefile_open(t,tracefile_name);
216 if(!tf) return;
217 t->per_cpu_tracefile_number++;
218 g_ptr_array_add(t->per_cpu_tracefiles, tf);
219}
220
221gint ltt_tracefile_open_control(LttTrace *t, char * control_name)
222{
223 LttTracefile * tf;
224 LttEvent * ev;
225 LttFacility * f;
226 guint16 evId;
227 void * pos;
228 FacilityLoad fLoad;
229 int i;
230
231 tf = ltt_tracefile_open(t,control_name);
232 if(!tf) {
233 g_warning("ltt_tracefile_open_control : bad file descriptor");
234 return -1;
235 }
236 t->control_tracefile_number++;
237 g_ptr_array_add(t->control_tracefiles,tf);
238
239 //parse facilities tracefile to get base_id
240 if(strcmp(&control_name[strlen(control_name)-10],"facilities") ==0){
241 while(1){
242 ev = ltt_tracefile_read(tf);
243 if(!ev)return 0; // end of file
244
245 if(ev->event_id == TRACE_FACILITY_LOAD){
246 pos = ev->data;
247 fLoad.name = (char*)pos;
248 fLoad.checksum = *(LttChecksum*)(pos + strlen(fLoad.name));
249 fLoad.base_code = *(guint32 *)(pos + strlen(fLoad.name) + sizeof(LttChecksum));
250
251 for(i=0;i<t->facility_number;i++){
252 f = (LttFacility*)g_ptr_array_index(t->facilities,i);
253 if(strcmp(f->name,fLoad.name)==0 && fLoad.checksum==f->checksum){
254 f->base_id = fLoad.base_code;
255 break;
256 }
257 }
258 if(i==t->facility_number) {
259 g_warning("Facility: %s, checksum: %d is not found\n",
260 fLoad.name,fLoad.checksum);
261 return -1;
262 }
263 }else if(ev->event_id == TRACE_BLOCK_START){
264 continue;
265 }else if(ev->event_id == TRACE_BLOCK_END){
266 break;
267 }else {
268 g_warning("Not valid facilities trace file\n");
269 return -1;
270 }
271 }
272 }
273 return 0;
274}
275
276/*****************************************************************************
277 *Function name
278 * ltt_tracefile_close: close a trace file,
279 *Input params
280 * t : tracefile which will be closed
281 ****************************************************************************/
282
283void ltt_tracefile_close(LttTracefile *t)
284{
285 g_free(t->name);
286 g_free(t->buffer);
287 close(t->fd);
288 g_free(t);
289}
290
291
292/*****************************************************************************
293 *Get system information
294 ****************************************************************************/
295gint getSystemInfo(LttSystemDescription* des, char * pathname)
296{
297 FILE * fp;
298 char buf[DIR_NAME_SIZE];
299 char description[4*DIR_NAME_SIZE];
300
301 GMarkupParseContext * context;
302 GError * error = NULL;
303 GMarkupParser markup_parser =
304 {
305 parser_start_element,
306 parser_end_element,
307 parser_characters,
308 NULL, /* passthrough */
309 NULL /* error */
310 };
311
312 fp = fopen(pathname,"r");
313 if(!fp){
314 g_warning("Can not open file : %s\n", pathname);
315 return -1;
316 }
317
318 context = g_markup_parse_context_new(&markup_parser, 0, des,NULL);
319
320 while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){
321 if(!g_markup_parse_context_parse(context, buf, DIR_NAME_SIZE, &error)){
322 if(error != NULL) {
323 g_warning("Can not parse xml file: \n%s\n", error->message);
324 g_error_free(error);
325 }
326 g_markup_parse_context_free(context);
327 fclose(fp);
328 return -1;
329 }
330 }
331 g_markup_parse_context_free(context);
332 fclose(fp);
333 return 0;
334}
335
336/*****************************************************************************
337 *The following functions get facility/tracefile information
338 ****************************************************************************/
339
340gint getFacilityInfo(LttTrace *t, char* eventdefs)
341{
342 DIR * dir;
343 struct dirent *entry;
344 char * ptr;
345 int i,j;
346 LttFacility * f;
347 LttEventType * et;
348 char name[DIR_NAME_SIZE];
349
350 dir = opendir(eventdefs);
351 if(!dir) {
352 g_warning("Can not open directory: %s\n", eventdefs);
353 return -1;
354 }
355
356 while((entry = readdir(dir)) != NULL){
357 ptr = &entry->d_name[strlen(entry->d_name)-4];
358 if(strcmp(ptr,".xml") != 0) continue;
359 strcpy(name,eventdefs);
360 strcat(name,entry->d_name);
361 ltt_facility_open(t,name);
362 }
363 closedir(dir);
364
365 for(j=0;j<t->facility_number;j++){
366 f = (LttFacility*)g_ptr_array_index(t->facilities, j);
367 for(i=0; i<f->event_number; i++){
368 et = f->events[i];
369 setFieldsOffset(NULL, et, NULL, t);
370 }
371 }
372 return 0;
373}
374
375gint getControlFileInfo(LttTrace *t, char* control)
376{
377 DIR * dir;
378 struct dirent *entry;
379 char name[DIR_NAME_SIZE];
380
381 dir = opendir(control);
382 if(!dir) {
383 g_warning("Can not open directory: %s\n", control);
384 return -1;
385 }
386
387 while((entry = readdir(dir)) != NULL){
388 if(strcmp(entry->d_name,"facilities") != 0 &&
389 strcmp(entry->d_name,"interrupts") != 0 &&
390 strcmp(entry->d_name,"processes") != 0) continue;
391
392 strcpy(name,control);
393 strcat(name,entry->d_name);
394 if(ltt_tracefile_open_control(t,name))
395 return -1;
396 }
397 closedir(dir);
398 return 0;
399}
400
401gint getCpuFileInfo(LttTrace *t, char* cpu)
402{
403 DIR * dir;
404 struct dirent *entry;
405 char name[DIR_NAME_SIZE];
406
407 dir = opendir(cpu);
408 if(!dir) {
409 g_warning("Can not open directory: %s\n", cpu);
410 return -1;
411 }
412
413 while((entry = readdir(dir)) != NULL){
414 if(strcmp(entry->d_name,".") != 0 &&
415 strcmp(entry->d_name,"..") != 0 &&
416 strcmp(entry->d_name,".svn") != 0){
417 strcpy(name,cpu);
418 strcat(name,entry->d_name);
419 ltt_tracefile_open_cpu(t,name);
420 }else continue;
421 }
422 closedir(dir);
423 return 0;
424}
425
426/*****************************************************************************
427 *A trace is specified as a pathname to the directory containing all the
428 *associated data (control tracefiles, per cpu tracefiles, event
429 *descriptions...).
430 *
431 *When a trace is closed, all the associated facilities, types and fields
432 *are released as well.
433 *
434 * MD : Fixed this function so it uses realpath, dealing well with
435 * forgotten cases (.. were not used correctly before).
436 *
437 ****************************************************************************/
438
439void get_absolute_pathname(const char *pathname, char * abs_pathname)
440{
441 char * ptr, *ptr1;
442 size_t size = DIR_NAME_SIZE;
443 abs_pathname[0] = '\0';
444
445 if ( realpath (pathname, abs_pathname) != NULL)
446 return;
447 else
448 {
449 // FIXME : Path is wrong, is it ok to return the pathname unmodified ?
450 strcpy(abs_pathname, pathname);
451 return;
452 }
453
454 return;
455
456}
457
458LttTrace *ltt_trace_open(const char *pathname)
459{
460 LttTrace * t;
461 LttSystemDescription * sys_description;
462 char eventdefs[DIR_NAME_SIZE];
463 char info[DIR_NAME_SIZE];
464 char control[DIR_NAME_SIZE];
465 char cpu[DIR_NAME_SIZE];
466 char tmp[DIR_NAME_SIZE];
467 char abs_path[DIR_NAME_SIZE];
468 gboolean has_slash = FALSE;
469
470 get_absolute_pathname(pathname, abs_path);
471 //establish the pathname to different directories
472 if(abs_path[strlen(abs_path)-1] == '/')has_slash = TRUE;
473 strcpy(eventdefs,abs_path);
474 if(!has_slash)strcat(eventdefs,"/");
475 strcat(eventdefs,"eventdefs/");
476
477 strcpy(info,abs_path);
478 if(!has_slash)strcat(info,"/");
479 strcat(info,"info/");
480
481 strcpy(control,abs_path);
482 if(!has_slash)strcat(control,"/");
483 strcat(control,"control/");
484
485 strcpy(cpu,abs_path);
486 if(!has_slash)strcat(cpu,"/");
487 strcat(cpu,"cpu/");
488
489 //new trace
490 sys_description = g_new(LttSystemDescription, 1);
491 t = g_new(LttTrace, 1);
492 t->pathname = g_strdup(abs_path);
493 t->facility_number = 0;
494 t->control_tracefile_number = 0;
495 t->per_cpu_tracefile_number = 0;
496 t->system_description = sys_description;
497 t->control_tracefiles = g_ptr_array_new();
498 t->per_cpu_tracefiles = g_ptr_array_new();
499 t->facilities = g_ptr_array_new();
500 getDataEndianType(&(t->my_arch_size), &(t->my_arch_endian));
501
502 //get system description
503 strcpy(tmp,info);
504 strcat(tmp,"system.xml");
505 if(getSystemInfo(sys_description, tmp)) {
506 g_ptr_array_free(t->facilities, TRUE);
507 g_ptr_array_free(t->per_cpu_tracefiles, TRUE);
508 g_ptr_array_free(t->control_tracefiles, TRUE);
509 g_free(sys_description);
510 g_free(t->pathname);
511 g_free(t);
512 return NULL;
513 }
514
515
516
517 //get facilities info
518 if(getFacilityInfo(t,eventdefs)) {
519 g_ptr_array_free(t->facilities, TRUE);
520 g_ptr_array_free(t->per_cpu_tracefiles, TRUE);
521 g_ptr_array_free(t->control_tracefiles, TRUE);
522 g_free(sys_description);
523 g_free(t->pathname);
524 g_free(t);
525 return NULL;
526 }
527
528 //get control tracefile info
529 getControlFileInfo(t,control);
530 /*
531 if(getControlFileInfo(t,control)) {
532 g_ptr_array_free(t->facilities, TRUE);
533 g_ptr_array_free(t->per_cpu_tracefiles, TRUE);
534 g_ptr_array_free(t->control_tracefiles, TRUE);
535 g_free(sys_description);
536 g_free(t->pathname);
537 g_free(t);
538 return NULL;
539 }*/ // With fatal error
540
541 //get cpu tracefile info
542 if(getCpuFileInfo(t,cpu)) {
543 g_ptr_array_free(t->facilities, TRUE);
544 g_ptr_array_free(t->per_cpu_tracefiles, TRUE);
545 g_ptr_array_free(t->control_tracefiles, TRUE);
546 g_free(sys_description);
547 g_free(t->pathname);
548 g_free(t);
549 return NULL;
550 }
551
552 return t;
553}
554
555char * ltt_trace_name(LttTrace *t)
556{
557 return t->pathname;
558}
559
560
561/******************************************************************************
562 * When we copy a trace, we want all the opening actions to happen again :
563 * the trace will be reopened and totally independant from the original.
564 * That's why we call ltt_trace_open.
565 *****************************************************************************/
566LttTrace *ltt_trace_copy(LttTrace *self)
567{
568 return ltt_trace_open(self->pathname);
569}
570
571void ltt_trace_close(LttTrace *t)
572{
573 int i;
574 LttTracefile * tf;
575 LttFacility * f;
576
577 g_free(t->pathname);
578
579 //free system_description
580 g_free(t->system_description->description);
581 g_free(t->system_description->node_name);
582 g_free(t->system_description->domain_name);
583 g_free(t->system_description->kernel_name);
584 g_free(t->system_description->kernel_release);
585 g_free(t->system_description->kernel_version);
586 g_free(t->system_description->machine);
587 g_free(t->system_description->processor);
588 g_free(t->system_description->hardware_platform);
589 g_free(t->system_description->operating_system);
590 g_free(t->system_description);
591
592 //free control_tracefiles
593 for(i=0;i<t->control_tracefile_number;i++){
594 tf = (LttTracefile*)g_ptr_array_index(t->control_tracefiles,i);
595 ltt_tracefile_close(tf);
596 }
597 g_ptr_array_free(t->control_tracefiles, TRUE);
598
599 //free per_cpu_tracefiles
600 for(i=0;i<t->per_cpu_tracefile_number;i++){
601 tf = (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles,i);
602 ltt_tracefile_close(tf);
603 }
604 g_ptr_array_free(t->per_cpu_tracefiles, TRUE);
605
606 //free facilities
607 for(i=0;i<t->facility_number;i++){
608 f = (LttFacility*)g_ptr_array_index(t->facilities,i);
609 ltt_facility_close(f);
610 }
611 g_ptr_array_free(t->facilities, TRUE);
612
613 g_free(t);
614
615 g_blow_chunks();
616}
617
618
619/*****************************************************************************
620 *Get the system description of the trace
621 ****************************************************************************/
622
623LttSystemDescription *ltt_trace_system_description(LttTrace *t)
624{
625 return t->system_description;
626}
627
628/*****************************************************************************
629 * The following functions discover the facilities of the trace
630 ****************************************************************************/
631
632unsigned ltt_trace_facility_number(LttTrace *t)
633{
634 return (unsigned)(t->facility_number);
635}
636
637LttFacility *ltt_trace_facility_get(LttTrace *t, unsigned i)
638{
639 return (LttFacility*)g_ptr_array_index(t->facilities, i);
640}
641
642/*****************************************************************************
643 *Function name
644 * ltt_trace_facility_find : find facilities in the trace
645 *Input params
646 * t : the trace
647 * name : facility name
648 *Output params
649 * position : position of the facility in the trace
650 *Return value
651 * : the number of facilities
652 ****************************************************************************/
653
654unsigned ltt_trace_facility_find(LttTrace *t, char *name, unsigned *position)
655{
656 int i, count=0;
657 LttFacility * f;
658 for(i=0;i<t->facility_number;i++){
659 f = (LttFacility*)g_ptr_array_index(t->facilities, i);
660 if(strcmp(f->name,name)==0){
661 count++;
662 if(count==1) *position = i;
663 }else{
664 if(count) break;
665 }
666 }
667 return count;
668}
669
670/*****************************************************************************
671 * Functions to discover all the event types in the trace
672 ****************************************************************************/
673
674unsigned ltt_trace_eventtype_number(LttTrace *t)
675{
676 int i;
677 unsigned count = 0;
678 LttFacility * f;
679 for(i=0;i<t->facility_number;i++){
680 f = (LttFacility*)g_ptr_array_index(t->facilities, i);
681 count += f->event_number;
682 }
683 return count;
684}
685
686LttFacility * ltt_trace_facility_by_id(LttTrace * trace, unsigned id)
687{
688 LttFacility * facility;
689 int i;
690 for(i=0;i<trace->facility_number;i++){
691 facility = (LttFacility*) g_ptr_array_index(trace->facilities,i);
692 if(id >= facility->base_id &&
693 id < facility->base_id + facility->event_number)
694 break;
695 }
696 if(i==trace->facility_number) return NULL;
697 else return facility;
698}
699
700LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned evId)
701{
702 LttFacility * f;
703 f = ltt_trace_facility_by_id(t,evId);
704 if(!f) return NULL;
705 return f->events[evId - f->base_id];
706}
707
708/*****************************************************************************
709 *There is one "per cpu" tracefile for each CPU, numbered from 0 to
710 *the maximum number of CPU in the system. When the number of CPU installed
711 *is less than the maximum, some positions are unused. There are also a
712 *number of "control" tracefiles (facilities, interrupts...).
713 ****************************************************************************/
714unsigned ltt_trace_control_tracefile_number(LttTrace *t)
715{
716 return t->control_tracefile_number;
717}
718
719unsigned ltt_trace_per_cpu_tracefile_number(LttTrace *t)
720{
721 return t->per_cpu_tracefile_number;
722}
723
724/*****************************************************************************
725 *It is possible to search for the tracefiles by name or by CPU position.
726 *The index within the tracefiles of the same type is returned if found
727 *and a negative value otherwise.
728 ****************************************************************************/
729
730int ltt_trace_control_tracefile_find(LttTrace *t, char *name)
731{
732 LttTracefile * tracefile;
733 int i;
734 for(i=0;i<t->control_tracefile_number;i++){
735 tracefile = (LttTracefile*)g_ptr_array_index(t->control_tracefiles, i);
736 if(strcmp(tracefile->name, name)==0)break;
737 }
738 if(i == t->control_tracefile_number) return -1;
739 return i;
740}
741
742int ltt_trace_per_cpu_tracefile_find(LttTrace *t, unsigned i)
743{
744 LttTracefile * tracefile;
745 int j, name;
746 for(j=0;j<t->per_cpu_tracefile_number;j++){
747 tracefile = (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles, j);
748 name = atoi(tracefile->name);
749 if(name == (int)i)break;
750 }
751 if(j == t->per_cpu_tracefile_number) return -1;
752 return j;
753}
754
755/*****************************************************************************
756 *Get a specific tracefile
757 ****************************************************************************/
758
759LttTracefile *ltt_trace_control_tracefile_get(LttTrace *t, unsigned i)
760{
761 return (LttTracefile*)g_ptr_array_index(t->control_tracefiles, i);
762}
763
764LttTracefile *ltt_trace_per_cpu_tracefile_get(LttTrace *t, unsigned i)
765{
766 return (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles, i);
767}
768
769/*****************************************************************************
770 * Get the start time and end time of the trace
771 ****************************************************************************/
772
773void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end)
774{
775 LttTime startSmall, startTmp, endBig, endTmp;
776 int i, j=0;
777 LttTracefile * tf;
778
779 for(i=0;i<t->control_tracefile_number;i++){
780 tf = g_ptr_array_index(t->control_tracefiles, i);
781 readBlock(tf,1);
782 startTmp = tf->a_block_start->time;
783 readBlock(tf,tf->block_number);
784 endTmp = tf->a_block_end->time;
785 if(i==0){
786 startSmall = startTmp;
787 endBig = endTmp;
788 j = 1;
789 continue;
790 }
791 if(ltt_time_compare(startSmall,startTmp) > 0) startSmall = startTmp;
792 if(ltt_time_compare(endBig,endTmp) < 0) endBig = endTmp;
793 }
794
795 for(i=0;i<t->per_cpu_tracefile_number;i++){
796 tf = g_ptr_array_index(t->per_cpu_tracefiles, i);
797 readBlock(tf,1);
798 startTmp = tf->a_block_start->time;
799 readBlock(tf,tf->block_number);
800 endTmp = tf->a_block_end->time;
801 if(j == 0 && i==0){
802 startSmall = startTmp;
803 endBig = endTmp;
804 continue;
805 }
806 if(ltt_time_compare(startSmall,startTmp) > 0) startSmall = startTmp;
807 if(ltt_time_compare(endBig,endTmp) < 0) endBig = endTmp;
808 }
809
810 *start = startSmall;
811 *end = endBig;
812}
813
814
815/*****************************************************************************
816 *Get the name of a tracefile
817 ****************************************************************************/
818
819char *ltt_tracefile_name(LttTracefile *tf)
820{
821 return tf->name;
822}
823
824/*****************************************************************************
825 * Get the number of blocks in the tracefile
826 ****************************************************************************/
827
828unsigned ltt_tracefile_block_number(LttTracefile *tf)
829{
830 return tf->block_number;
831}
832
833/*****************************************************************************
834 *Function name
835 * ltt_tracefile_seek_time: seek to the first event of the trace with time
836 * larger or equal to time
837 *Input params
838 * t : tracefile
839 * time : criteria of the time
840 ****************************************************************************/
841void ltt_tracefile_find_time_block(LttTracefile *t, LttTime time,
842 int start_block, int end_block)
843{
844 int err, tmp_block, s, e;
845 int headTime;
846 int tailTime;
847
848 err=readBlock(t,start_block);
849 if(err) g_error("Can not read tracefile: %s\n", t->name);
850 if(start_block == end_block)return;
851
852 tailTime = ltt_time_compare(t->a_block_end->time, time);
853 if(tailTime >= 0) return;
854
855 err=readBlock(t,end_block);
856 if(err) g_error("Can not read tracefile: %s\n", t->name);
857 if(start_block+1 == end_block)return;
858
859 headTime = ltt_time_compare(t->a_block_start->time, time);
860 if(headTime <= 0 ) return;
861
862 tmp_block = (end_block + start_block)/2;
863 err=readBlock(t,tmp_block);
864 if(err) g_error("Can not read tracefile: %s\n", t->name);
865
866 headTime = ltt_time_compare(t->a_block_start->time, time);
867 tailTime = ltt_time_compare(t->a_block_end->time, time);
868 if(headTime <= 0 && tailTime >= 0) return;
869
870 if(headTime > 0){
871 s = start_block + 1;
872 e = tmp_block - 1;
873 if(s <= e)
874 ltt_tracefile_find_time_block(t, time, s, e);
875 else return;
876 }
877
878 if(tailTime < 0){
879 s = tmp_block + 1;
880 e = end_block - 1;
881 if(s <= e)
882 ltt_tracefile_find_time_block(t, time, s, e);
883 else return;
884 }
885}
886
887void ltt_tracefile_backward_find_time_block(LttTracefile *t, LttTime time)
888{
889 int t_time, h_time, err;
890 err=readBlock(t,t->which_block-1);
891 if(err) g_error("Can not read tracefile: %s\n", t->name);
892 h_time = ltt_time_compare(t->a_block_start->time, time);
893 t_time = ltt_time_compare(t->a_block_end->time, time);
894 if(h_time == 0){
895 int tmp;
896 if(t->which_block == 1) return;
897 err=readBlock(t,t->which_block-1);
898 if(err) g_error("Can not read tracefile: %s\n", t->name);
899 tmp = ltt_time_compare(t->a_block_end->time, time);
900 if(tmp == 0) return ltt_tracefile_seek_time(t, time);
901 err=readBlock(t,t->which_block+1);
902 if(err) g_error("Can not read tracefile: %s\n", t->name);
903 }else if(h_time > 0){
904 ltt_tracefile_find_time_block(t, time, 1, t->which_block);
905 return ltt_tracefile_seek_time(t, time) ;
906 }else{
907 if(t_time >= 0) return ltt_tracefile_seek_time(t, time);
908 err=readBlock(t,t->which_block+1);
909 if(err) g_error("Can not read tracefile: %s\n", t->name);
910 }
911}
912
913void ltt_tracefile_seek_time(LttTracefile *t, LttTime time)
914{
915 int err;
916 LttTime lttTime;
917 int headTime = ltt_time_compare(t->a_block_start->time, time);
918 int tailTime = ltt_time_compare(t->a_block_end->time, time);
919 LttEvent * ev;
920
921 if(headTime < 0 && tailTime > 0){
922 if(ltt_time_compare(t->a_block_end->time, t->current_event_time) !=0) {
923 lttTime = getEventTime(t);
924 err = ltt_time_compare(lttTime, time);
925 if(err > 0){
926 if(t->which_event==2 || (&t->prev_event_time,&time)<0){
927 return;
928 }else{
929 updateTracefile(t);
930 return ltt_tracefile_seek_time(t, time);
931 }
932 }else if(err < 0){
933 while(1){
934 ev = ltt_tracefile_read(t);
935 if(ev == NULL){
936 g_print("End of file\n");
937 return;
938 }
939 lttTime = getEventTime(t);
940 err = ltt_time_compare(lttTime, time);
941 if(err >= 0)return;
942 }
943 }else return;
944 }else{//we are at the end of the block
945 updateTracefile(t);
946 return ltt_tracefile_seek_time(t, time);
947 }
948 }else if(headTime >= 0){
949 if(t->which_block == 1){
950 updateTracefile(t);
951 }else{
952 if(ltt_time_compare(t->prev_block_end_time, time) >= 0 ||
953 (t->prev_block_end_time.tv_sec == 0 &&
954 t->prev_block_end_time.tv_nsec == 0 )){
955 ltt_tracefile_backward_find_time_block(t, time);
956 }else{
957 updateTracefile(t);
958 }
959 }
960 }else if(tailTime < 0){
961 if(t->which_block != t->block_number){
962 ltt_tracefile_find_time_block(t, time, t->which_block+1, t->block_number);
963 return ltt_tracefile_seek_time(t, time);
964 }else {
965 t->cur_event_pos = t->buffer + t->block_size;
966 g_print("End of file\n");
967 return;
968 }
969 }else if(tailTime == 0){
970 t->cur_event_pos = t->last_event_pos;
971 t->current_event_time = time;
972 t->cur_heart_beat_number = 0;
973 t->prev_event_time.tv_sec = 0;
974 t->prev_event_time.tv_nsec = 0;
975 return;
976 }
977}
978
979/*****************************************************************************
980 * Seek to the first event with position equal or larger to ep
981 ****************************************************************************/
982
983void ltt_tracefile_seek_position(LttTracefile *t, const LttEventPosition *ep)
984{
985 //if we are at the right place, just return
986 if(t->which_block == ep->block_num && t->which_event == ep->event_num)
987 return;
988
989 if(t->which_block == ep->block_num) updateTracefile(t);
990 else readBlock(t,ep->block_num);
991
992 //event offset is availiable
993 if(ep->old_position){
994 t->cur_heart_beat_number = ep->heart_beat_number;
995 t->cur_event_pos = t->buffer + ep->event_offset;
996 return;
997 }
998
999 //only block number and event index are availiable
1000 while(t->which_event < ep->event_num) ltt_tracefile_read(t);
1001
1002 return;
1003}
1004
1005/*****************************************************************************
1006 *Function name
1007 * ltt_tracefile_read : read the current event, set the pointer to the next
1008 *Input params
1009 * t : tracefile
1010 *Return value
1011 * LttEvent * : an event to be processed
1012 ****************************************************************************/
1013
1014LttEvent *ltt_tracefile_read(LttTracefile *t)
1015{
1016 LttEvent * lttEvent = &t->an_event;
1017 int err;
1018
1019 if(t->cur_event_pos == t->buffer + t->block_size){
1020 if(t->which_block == t->block_number){
1021 return NULL;
1022 }
1023 err = readBlock(t, t->which_block + 1);
1024 if(err)g_error("Can not read tracefile");
1025 }
1026
1027 lttEvent->event_id = (int)(*(guint16 *)(t->cur_event_pos));
1028 if(lttEvent->event_id == TRACE_TIME_HEARTBEAT)
1029 t->cur_heart_beat_number++;
1030
1031 t->prev_event_time = t->current_event_time;
1032 // t->current_event_time = getEventTime(t);
1033
1034 lttEvent->time_delta = *(guint32 *)(t->cur_event_pos + EVENT_ID_SIZE);
1035 lttEvent->event_time = t->current_event_time;
1036 lttEvent->event_cycle_count = t->cur_cycle_count;
1037
1038 lttEvent->tracefile = t;
1039 lttEvent->data = t->cur_event_pos + EVENT_HEADER_SIZE;
1040 lttEvent->which_block = t->which_block;
1041 lttEvent->which_event = t->which_event;
1042
1043 //update the fields of the current event and go to the next event
1044 err = skipEvent(t);
1045 if(err == ERANGE) g_error("event id is out of range\n");
1046
1047 return lttEvent;
1048}
1049
1050/****************************************************************************
1051 *Function name
1052 * readFile : wrap function to read from a file
1053 *Input Params
1054 * fd : file descriptor
1055 * buf : buf to contain the content
1056 * size : number of bytes to be read
1057 * mesg : message to be printed if some thing goes wrong
1058 *return value
1059 * 0 : success
1060 * EIO : can not read from the file
1061 ****************************************************************************/
1062
1063int readFile(int fd, void * buf, size_t size, char * mesg)
1064{
1065 ssize_t nbBytes;
1066 nbBytes = read(fd, buf, size);
1067 if(nbBytes != size){
1068 printf("%s\n",mesg);
1069 return EIO;
1070 }
1071 return 0;
1072}
1073
1074/****************************************************************************
1075 *Function name
1076 * readBlock : read a block from the file
1077 *Input Params
1078 * lttdes : ltt trace file
1079 * whichBlock : the block which will be read
1080 *return value
1081 * 0 : success
1082 * EINVAL : lseek fail
1083 * EIO : can not read from the file
1084 ****************************************************************************/
1085
1086int readBlock(LttTracefile * tf, int whichBlock)
1087{
1088 off_t nbBytes;
1089 guint32 lostSize;
1090
1091 if(whichBlock - tf->which_block == 1 && tf->which_block != 0){
1092 tf->prev_block_end_time = tf->a_block_end->time;
1093 tf->prev_event_time = tf->a_block_end->time;
1094 }else{
1095 tf->prev_block_end_time.tv_sec = 0;
1096 tf->prev_block_end_time.tv_nsec = 0;
1097 tf->prev_event_time.tv_sec = 0;
1098 tf->prev_event_time.tv_nsec = 0;
1099 }
1100
1101 nbBytes=lseek(tf->fd,(off_t)((whichBlock-1)*tf->block_size), SEEK_SET);
1102 if(nbBytes == -1) return EINVAL;
1103
1104 if(readFile(tf->fd,tf->buffer,tf->block_size,"Unable to read a block"))
1105 return EIO;
1106
1107 tf->a_block_start=(BlockStart *) (tf->buffer + EVENT_HEADER_SIZE);
1108 lostSize = *(guint32 *)(tf->buffer + tf->block_size - sizeof(guint32));
1109 tf->a_block_end=(BlockEnd *)(tf->buffer + tf->block_size -
1110 lostSize + EVENT_HEADER_SIZE);
1111 tf->last_event_pos = tf->buffer + tf->block_size - lostSize;
1112
1113 tf->which_block = whichBlock;
1114 tf->which_event = 1;
1115 tf->cur_event_pos = tf->buffer;//the beginning of the block, block start ev
1116 tf->cur_heart_beat_number = 0;
1117
1118 getCyclePerNsec(tf);
1119
1120 tf->current_event_time = getEventTime(tf);
1121
1122 return 0;
1123}
1124
1125/*****************************************************************************
1126 *Function name
1127 * updateTracefile : reinitialize the info of the block which is already
1128 * in the buffer
1129 *Input params
1130 * tf : tracefile
1131 ****************************************************************************/
1132
1133void updateTracefile(LttTracefile * tf)
1134{
1135 tf->which_event = 1;
1136 tf->cur_event_pos = tf->buffer;
1137 tf->current_event_time = getEventTime(tf);
1138 tf->cur_heart_beat_number = 0;
1139
1140 tf->prev_event_time.tv_sec = 0;
1141 tf->prev_event_time.tv_nsec = 0;
1142}
1143
1144/*****************************************************************************
1145 *Function name
1146 * skipEvent : go to the next event, update the fields of the current event
1147 *Input params
1148 * t : tracefile
1149 *return value
1150 * 0 : success
1151 * ERANGE : event id is out of range
1152 ****************************************************************************/
1153
1154int skipEvent(LttTracefile * t)
1155{
1156 int evId, err;
1157 void * evData;
1158 LttEventType * evT;
1159 LttField * rootFld;
1160
1161 evId = (int)(*(guint16 *)(t->cur_event_pos));
1162 evData = t->cur_event_pos + EVENT_HEADER_SIZE;
1163
1164 evT = ltt_trace_eventtype_get(t->trace,(unsigned)evId);
1165
1166 if(evT) rootFld = evT->root_field;
1167 else return ERANGE;
1168
1169 if(rootFld){
1170 //event has string/sequence or the last event is not the same event
1171 if((evT->latest_block!=t->which_block || evT->latest_event!=t->which_event)
1172 && rootFld->field_fixed == 0){
1173 setFieldsOffset(t, evT, evData, t->trace);
1174 }
1175 t->cur_event_pos += EVENT_HEADER_SIZE + rootFld->field_size;
1176 }else t->cur_event_pos += EVENT_HEADER_SIZE;
1177
1178 evT->latest_block = t->which_block;
1179 evT->latest_event = t->which_event;
1180
1181 //the next event is in the next block
1182 if(evId == TRACE_BLOCK_END){
1183 t->cur_event_pos = t->buffer + t->block_size;
1184 }else{
1185 t->which_event++;
1186 t->current_event_time = getEventTime(t);
1187 }
1188
1189 return 0;
1190}
1191
1192/*****************************************************************************
1193 *Function name
1194 * getCyclePerNsec : calculate cycles per nsec for current block
1195 *Input Params
1196 * t : tracefile
1197 ****************************************************************************/
1198
1199void getCyclePerNsec(LttTracefile * t)
1200{
1201 LttTime lBufTotalTime; /* Total time for this buffer */
1202 LttCycleCount lBufTotalNSec; /* Total time for this buffer in nsecs */
1203 LttCycleCount lBufTotalCycle;/* Total cycles for this buffer */
1204
1205 /* Calculate the total time for this buffer */
1206 lBufTotalTime = ltt_time_sub(t->a_block_end->time, t->a_block_start->time);
1207
1208 /* Calculate the total cycles for this bufffer */
1209 lBufTotalCycle = t->a_block_end->cycle_count;
1210 lBufTotalCycle -= t->a_block_start->cycle_count;
1211
1212 /* Convert the total time to nsecs */
1213 lBufTotalNSec = lBufTotalTime.tv_sec;
1214 lBufTotalNSec *= NANOSECONDS_PER_SECOND;
1215 lBufTotalNSec += lBufTotalTime.tv_nsec;
1216
1217 t->cycle_per_nsec = (double)lBufTotalCycle / (double)lBufTotalNSec;
1218}
1219
1220/****************************************************************************
1221 *Function name
1222 * getEventTime : obtain the time of an event
1223 *Input params
1224 * tf : tracefile
1225 *Return value
1226 * LttTime : the time of the event
1227 ****************************************************************************/
1228
1229LttTime getEventTime(LttTracefile * tf)
1230{
1231 LttTime time;
1232 LttCycleCount cycle_count; // cycle count for the current event
1233 LttCycleCount lEventTotalCycle; // Total cycles from start for event
1234 LttCycleCount lEventNSec; // Total usecs from start for event
1235 LttTime lTimeOffset; // Time offset in struct LttTime
1236 guint16 evId;
1237 LttCycleCount tmpCycleCount = (((LttCycleCount)1)<<32);
1238
1239 evId = *(guint16 *)tf->cur_event_pos;
1240 if(evId == TRACE_BLOCK_START){
1241 tf->count = 0;
1242 tf->pre_cycle_count = 0;
1243 tf->cur_cycle_count = tf->a_block_start->cycle_count;
1244 return tf->a_block_start->time;
1245 }else if(evId == TRACE_BLOCK_END){
1246 tf->count = 0;
1247 tf->pre_cycle_count = 0;
1248 tf->cur_cycle_count = tf->a_block_end->cycle_count;
1249 return tf->a_block_end->time;
1250 }
1251
1252 // Calculate total time in cycles from start of buffer for this event
1253 cycle_count = (LttCycleCount)*(guint32 *)(tf->cur_event_pos + EVENT_ID_SIZE);
1254
1255 if(cycle_count < tf->pre_cycle_count)tf->count++;
1256 tf->pre_cycle_count = cycle_count;
1257 cycle_count += tmpCycleCount * tf->count;
1258
1259 // if(tf->cur_heart_beat_number > tf->count)
1260 // cycle_count += tmpCycleCount * (tf->cur_heart_beat_number - tf->count);
1261
1262 tf->cur_cycle_count = cycle_count;
1263
1264 lEventTotalCycle = cycle_count;
1265 lEventTotalCycle -= tf->a_block_start->cycle_count;
1266
1267 // Convert it to nsecs
1268 lEventNSec = (double)lEventTotalCycle / (double)tf->cycle_per_nsec;
1269
1270 // Determine offset in struct LttTime
1271 lTimeOffset.tv_nsec = lEventNSec % NANOSECONDS_PER_SECOND;
1272 lTimeOffset.tv_sec = lEventNSec / NANOSECONDS_PER_SECOND;
1273
1274 time = ltt_time_add(tf->a_block_start->time, lTimeOffset);
1275
1276 return time;
1277}
1278
1279/*****************************************************************************
1280 *Function name
1281 * setFieldsOffset : set offset of the fields
1282 *Input params
1283 * tracefile : opened trace file
1284 * evT : the event type
1285 * evD : event data, it may be NULL
1286 ****************************************************************************/
1287
1288void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace* t)
1289{
1290 LttField * rootFld = evT->root_field;
1291 // rootFld->base_address = evD;
1292
1293 if(rootFld)
1294 rootFld->field_size = getFieldtypeSize(tf, evT, 0,0,rootFld, evD,t);
1295}
1296
1297/*****************************************************************************
1298 *Function name
1299 * getFieldtypeSize: get the size of the field type (primitive type)
1300 *Input params
1301 * tracefile : opened trace file
1302 * evT : event type
1303 * offsetRoot : offset from the root
1304 * offsetParent : offset from the parrent
1305 * fld : field
1306 * evD : event data, it may be NULL
1307 *Return value
1308 * int : size of the field
1309 ****************************************************************************/
1310
1311int getFieldtypeSize(LttTracefile * t, LttEventType * evT, int offsetRoot,
1312 int offsetParent, LttField * fld, void *evD, LttTrace *trace)
1313{
1314 int size, size1, element_number, i, offset1, offset2;
1315 LttType * type = fld->field_type;
1316
1317 if(t){
1318 if(evT->latest_block==t->which_block && evT->latest_event==t->which_event){
1319 return fld->field_size;
1320 }
1321 }
1322
1323 if(fld->field_fixed == 1){
1324 if(fld == evT->root_field) return fld->field_size;
1325 }
1326
1327 if(type->type_class != LTT_STRUCT && type->type_class != LTT_ARRAY &&
1328 type->type_class != LTT_SEQUENCE && type->type_class != LTT_STRING){
1329 if(fld->field_fixed == -1){
1330 size = (int) ltt_type_size(trace, type);
1331 fld->field_fixed = 1;
1332 }else size = fld->field_size;
1333
1334 }else if(type->type_class == LTT_ARRAY){
1335 element_number = (int) type->element_number;
1336 if(fld->field_fixed == -1){
1337 size = getFieldtypeSize(t, evT, offsetRoot,0,fld->child[0], NULL, trace);
1338 if(size == 0){ //has string or sequence
1339 fld->field_fixed = 0;
1340 }else{
1341 fld->field_fixed = 1;
1342 size *= element_number;
1343 }
1344 }else if(fld->field_fixed == 0){// has string or sequence
1345 size = 0;
1346 for(i=0;i<element_number;i++){
1347 size += getFieldtypeSize(t, evT, offsetRoot+size,size,
1348 fld->child[0], evD+size, trace);
1349 }
1350 }else size = fld->field_size;
1351
1352 }else if(type->type_class == LTT_SEQUENCE){
1353 size1 = (int) ltt_type_size(trace, type);
1354 if(fld->field_fixed == -1){
1355 fld->sequ_number_size = size1;
1356 fld->field_fixed = 0;
1357 size = getFieldtypeSize(t, evT, offsetRoot,0,fld->child[0], NULL, trace);
1358 fld->element_size = size;
1359 }else{//0: sequence
1360 element_number = getIntNumber(size1,evD);
1361 type->element_number = element_number;
1362 if(fld->element_size > 0){
1363 size = element_number * fld->element_size;
1364 }else{//sequence has string or sequence
1365 size = 0;
1366 for(i=0;i<element_number;i++){
1367 size += getFieldtypeSize(t, evT, offsetRoot+size+size1,size+size1,
1368 fld->child[0], evD+size+size1, trace);
1369 }
1370 }
1371 size += size1;
1372 }
1373
1374 }else if(type->type_class == LTT_STRING){
1375 size = 0;
1376 if(fld->field_fixed == -1){
1377 fld->field_fixed = 0;
1378 }else{//0: string
1379 size = strlen((char*)evD) + 1; //include end : '\0'
1380 }
1381
1382 }else if(type->type_class == LTT_STRUCT){
1383 element_number = (int) type->element_number;
1384 size = 0;
1385 if(fld->field_fixed == -1){
1386 offset1 = offsetRoot;
1387 offset2 = 0;
1388 for(i=0;i<element_number;i++){
1389 size1=getFieldtypeSize(t, evT,offset1,offset2, fld->child[i], NULL, trace);
1390 if(size1 > 0 && size >= 0){
1391 size += size1;
1392 if(offset1 >= 0) offset1 += size1;
1393 offset2 += size1;
1394 }else{
1395 size = -1;
1396 offset1 = -1;
1397 offset2 = -1;
1398 }
1399 }
1400 if(size == -1){
1401 fld->field_fixed = 0;
1402 size = 0;
1403 }else fld->field_fixed = 1;
1404 }else if(fld->field_fixed == 0){
1405 offset1 = offsetRoot;
1406 offset2 = 0;
1407 for(i=0;i<element_number;i++){
1408 size=getFieldtypeSize(t,evT,offset1,offset2,fld->child[i],evD+offset2, trace);
1409 offset1 += size;
1410 offset2 += size;
1411 }
1412 size = offset2;
1413 }else size = fld->field_size;
1414 }
1415
1416 fld->offset_root = offsetRoot;
1417 fld->offset_parent = offsetParent;
1418 if(!evD){
1419 fld->fixed_root = (offsetRoot==-1) ? 0 : 1;
1420 fld->fixed_parent = (offsetParent==-1) ? 0 : 1;
1421 }
1422 fld->field_size = size;
1423
1424 return size;
1425}
1426
1427
1428/*****************************************************************************
1429 *Function name
1430 * getIntNumber : get an integer number
1431 *Input params
1432 * size : the size of the integer
1433 * evD : the event data
1434 *Return value
1435 * int : an integer
1436 ****************************************************************************/
1437
1438int getIntNumber(int size, void *evD)
1439{
1440 gint64 i;
1441 if(size == 1) i = *(gint8 *)evD;
1442 else if(size == 2) i = *(gint16 *)evD;
1443 else if(size == 4) i = *(gint32 *)evD;
1444 else if(size == 8) i = *(gint64 *)evD;
1445
1446 return (int) i;
1447}
1448
1449/*****************************************************************************
1450 *Function name
1451 * getDataEndianType : get the data type size and endian type of the local
1452 * machine
1453 *Input params
1454 * size : size of data type
1455 * endian : endian type, little or big
1456 ****************************************************************************/
1457
1458void getDataEndianType(LttArchSize * size, LttArchEndian * endian)
1459{
1460 int i = 1;
1461 char c = (char) i;
1462 int sizeInt=sizeof(int), sizeLong=sizeof(long), sizePointer=sizeof(void *);
1463
1464 if(c == 1) *endian = LTT_LITTLE_ENDIAN;
1465 else *endian = LTT_BIG_ENDIAN;
1466
1467 if(sizeInt == 2 && sizeLong == 4 && sizePointer == 4)
1468 *size = LTT_LP32;
1469 else if(sizeInt == 4 && sizeLong == 4 && sizePointer == 4)
1470 *size = LTT_ILP32;
1471 else if(sizeInt == 4 && sizeLong == 8 && sizePointer == 8)
1472 *size = LTT_LP64;
1473 else if(sizeInt == 8 && sizeLong == 8 && sizePointer == 8)
1474 *size = LTT_ILP64;
1475 else *size = LTT_UNKNOWN;
1476}
1477
1478/* get the node name of the system */
1479
1480char * ltt_trace_system_description_node_name (LttSystemDescription * s)
1481{
1482 return s->node_name;
1483}
1484
1485
1486/* get the domain name of the system */
1487
1488char * ltt_trace_system_description_domain_name (LttSystemDescription * s)
1489{
1490 return s->domain_name;
1491}
1492
1493
1494/* get the description of the system */
1495
1496char * ltt_trace_system_description_description (LttSystemDescription * s)
1497{
1498 return s->description;
1499}
1500
1501
1502/* get the start time of the trace */
1503
1504LttTime ltt_trace_system_description_trace_start_time(LttSystemDescription *s)
1505{
1506 return s->trace_start;
1507}
1508
LTTng 2.x Viewer (LTTV)
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