1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Xiangxiu Yang
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;
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.
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,
24 #include <sys/types.h>
35 #include "ltt-private.h"
36 #include <ltt/trace.h>
37 #include <ltt/facility.h>
38 #include <ltt/event.h>
41 #define DIR_NAME_SIZE 256
42 #define __UNUSED__ __attribute__((__unused__))
44 #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format)
45 #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format)
48 /* obtain the time of an event */
50 static inline LttTime
getEventTime(LttTracefile
* tf
);
53 /* set the offset of the fields belonging to the event,
54 need the information of the archecture */
55 void setFieldsOffset(LttTracefile
*tf
,LttEventType
*evT
,void *evD
,LttTrace
*t
);
57 /* get the size of the field type according to the archtecture's
58 size and endian type(info of the archecture) */
59 int getFieldtypeSize(LttTracefile
* tf
, LttEventType
* evT
, int offsetRoot
,
60 int offsetParent
, LttField
*fld
, void *evD
, LttTrace
* t
);
62 /* read a fixed size or a block information from the file (fd) */
63 int readFile(int fd
, void * buf
, size_t size
, char * mesg
);
64 int readBlock(LttTracefile
* tf
, int whichBlock
);
66 /* calculate cycles per nsec for current block */
67 void getCyclePerNsec(LttTracefile
* t
);
69 /* reinitialize the info of the block which is already in the buffer */
70 void updateTracefile(LttTracefile
* tf
);
72 /* go to the next event */
73 int skipEvent(LttTracefile
* t
);
76 /* Functions to parse system.xml file (using glib xml parser) */
77 static void parser_start_element (GMarkupParseContext __UNUSED__
*context
,
78 const gchar
*element_name
,
79 const gchar
**attribute_names
,
80 const gchar
**attribute_values
,
85 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
86 if(strcmp("system", element_name
)){
87 *error
= g_error_new(G_MARKUP_ERROR
,
89 "This is not system.xml file");
93 while(attribute_names
[i
]){
94 if(strcmp("node_name", attribute_names
[i
])==0){
95 des
->node_name
= g_strdup(attribute_values
[i
]);
96 }else if(strcmp("domainname", attribute_names
[i
])==0){
97 des
->domain_name
= g_strdup(attribute_values
[i
]);
98 }else if(strcmp("cpu", attribute_names
[i
])==0){
99 des
->nb_cpu
= atoi(attribute_values
[i
]);
100 }else if(strcmp("arch_size", attribute_names
[i
])==0){
101 if(strcmp(attribute_values
[i
],"LP32") == 0) des
->size
= LTT_LP32
;
102 else if(strcmp(attribute_values
[i
],"ILP32") == 0) des
->size
= LTT_ILP32
;
103 else if(strcmp(attribute_values
[i
],"LP64") == 0) des
->size
= LTT_LP64
;
104 else if(strcmp(attribute_values
[i
],"ILP64") == 0) des
->size
= LTT_ILP64
;
105 else if(strcmp(attribute_values
[i
],"UNKNOWN") == 0) des
->size
= LTT_UNKNOWN
;
106 }else if(strcmp("endian", attribute_names
[i
])==0){
107 if(strcmp(attribute_values
[i
],"LITTLE_ENDIAN") == 0)
108 des
->endian
= LTT_LITTLE_ENDIAN
;
109 else if(strcmp(attribute_values
[i
],"BIG_ENDIAN") == 0)
110 des
->endian
= LTT_BIG_ENDIAN
;
111 }else if(strcmp("kernel_name", attribute_names
[i
])==0){
112 des
->kernel_name
= g_strdup(attribute_values
[i
]);
113 }else if(strcmp("kernel_release", attribute_names
[i
])==0){
114 des
->kernel_release
= g_strdup(attribute_values
[i
]);
115 }else if(strcmp("kernel_version", attribute_names
[i
])==0){
116 des
->kernel_version
= g_strdup(attribute_values
[i
]);
117 }else if(strcmp("machine", attribute_names
[i
])==0){
118 des
->machine
= g_strdup(attribute_values
[i
]);
119 }else if(strcmp("processor", attribute_names
[i
])==0){
120 des
->processor
= g_strdup(attribute_values
[i
]);
121 }else if(strcmp("hardware_platform", attribute_names
[i
])==0){
122 des
->hardware_platform
= g_strdup(attribute_values
[i
]);
123 }else if(strcmp("operating_system", attribute_names
[i
])==0){
124 des
->operating_system
= g_strdup(attribute_values
[i
]);
125 }else if(strcmp("ltt_major_version", attribute_names
[i
])==0){
126 des
->ltt_major_version
= atoi(attribute_values
[i
]);
127 }else if(strcmp("ltt_minor_version", attribute_names
[i
])==0){
128 des
->ltt_minor_version
= atoi(attribute_values
[i
]);
129 }else if(strcmp("ltt_block_size", attribute_names
[i
])==0){
130 des
->ltt_block_size
= atoi(attribute_values
[i
]);
132 *error
= g_error_new(G_MARKUP_ERROR
,
134 "Not a valid attribute");
141 static void parser_characters (GMarkupParseContext __UNUSED__
*context
,
143 gsize __UNUSED__ text_len
,
145 GError __UNUSED__
**error
)
147 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
148 des
->description
= g_strdup(text
);
152 /*****************************************************************************
154 * ltt_tracefile_open : open a trace file, construct a LttTracefile
156 * t : the trace containing the tracefile
157 * fileName : path name of the trace file
159 * : a pointer to a tracefile
160 ****************************************************************************/
162 LttTracefile
* ltt_tracefile_open(LttTrace
* t
, char * fileName
)
165 struct stat lTDFStat
; /* Trace data file status */
167 tf
= g_new(LttTracefile
, 1);
170 tf
->name
= g_strdup(fileName
);
172 tf
->fd
= open(fileName
, O_RDONLY
, 0);
174 g_warning("Unable to open input data file %s\n", fileName
);
180 // Get the file's status
181 if(fstat(tf
->fd
, &lTDFStat
) < 0){
182 g_warning("Unable to get the status of the input data file %s\n", fileName
);
189 // Is the file large enough to contain a trace
190 if(lTDFStat
.st_size
< (off_t
)(sizeof(BlockStart
) + EVENT_HEADER_SIZE
)){
191 g_print("The input data file %s does not contain a trace\n", fileName
);
198 //store the size of the file
199 tf
->file_size
= lTDFStat
.st_size
;
200 tf
->block_size
= t
->system_description
->ltt_block_size
;
201 tf
->block_number
= tf
->file_size
/ tf
->block_size
;
204 //allocate memory to contain the info of a block
205 tf
->buffer
= (void *) g_new(char, t
->system_description
->ltt_block_size
);
207 //read the first block
208 if(readBlock(tf
,1)) exit(1);
214 /*****************************************************************************
215 *Open control and per cpu tracefiles
216 ****************************************************************************/
218 void ltt_tracefile_open_cpu(LttTrace
*t
, char * tracefile_name
)
221 tf
= ltt_tracefile_open(t
,tracefile_name
);
223 t
->per_cpu_tracefile_number
++;
224 g_ptr_array_add(t
->per_cpu_tracefiles
, tf
);
227 gint
ltt_tracefile_open_control(LttTrace
*t
, char * control_name
)
236 tf
= ltt_tracefile_open(t
,control_name
);
238 g_warning("ltt_tracefile_open_control : bad file descriptor");
241 t
->control_tracefile_number
++;
242 g_ptr_array_add(t
->control_tracefiles
,tf
);
244 //parse facilities tracefile to get base_id
245 if(strcmp(&control_name
[strlen(control_name
)-10],"facilities") ==0){
247 if(!ltt_tracefile_read(tf
,&ev
)) return 0; // end of file
249 if(ev
.event_id
== TRACE_FACILITY_LOAD
){
251 fLoad
.name
= (char*)pos
;
252 fLoad
.checksum
= *(LttChecksum
*)(pos
+ strlen(fLoad
.name
));
253 fLoad
.base_code
= *(guint32
*)(pos
+ strlen(fLoad
.name
) + sizeof(LttChecksum
));
255 for(i
=0;i
<t
->facility_number
;i
++){
256 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
257 if(strcmp(f
->name
,fLoad
.name
)==0 && fLoad
.checksum
==f
->checksum
){
258 f
->base_id
= fLoad
.base_code
;
262 if(i
==t
->facility_number
) {
263 g_warning("Facility: %s, checksum: %u is not found",
264 fLoad
.name
,(unsigned int)fLoad
.checksum
);
267 }else if(ev
.event_id
== TRACE_BLOCK_START
){
269 }else if(ev
.event_id
== TRACE_BLOCK_END
){
272 g_warning("Not valid facilities trace file");
280 /*****************************************************************************
282 * ltt_tracefile_close: close a trace file,
284 * t : tracefile which will be closed
285 ****************************************************************************/
287 void ltt_tracefile_close(LttTracefile
*t
)
296 /*****************************************************************************
297 *Get system information
298 ****************************************************************************/
299 gint
getSystemInfo(LttSystemDescription
* des
, char * pathname
)
302 char buf
[DIR_NAME_SIZE
];
304 GMarkupParseContext
* context
;
305 GError
* error
= NULL
;
306 GMarkupParser markup_parser
=
308 parser_start_element
,
311 NULL
, /* passthrough */
315 fp
= fopen(pathname
,"r");
317 g_warning("Can not open file : %s\n", pathname
);
321 context
= g_markup_parse_context_new(&markup_parser
, 0, des
,NULL
);
323 while(fgets(buf
,DIR_NAME_SIZE
, fp
) != NULL
){
324 if(!g_markup_parse_context_parse(context
, buf
, DIR_NAME_SIZE
, &error
)){
326 g_warning("Can not parse xml file: \n%s\n", error
->message
);
329 g_markup_parse_context_free(context
);
334 g_markup_parse_context_free(context
);
339 /*****************************************************************************
340 *The following functions get facility/tracefile information
341 ****************************************************************************/
343 gint
getFacilityInfo(LttTrace
*t
, char* eventdefs
)
346 struct dirent
*entry
;
351 char name
[DIR_NAME_SIZE
];
353 dir
= opendir(eventdefs
);
355 g_warning("Can not open directory: %s\n", eventdefs
);
359 while((entry
= readdir(dir
)) != NULL
){
360 ptr
= &entry
->d_name
[strlen(entry
->d_name
)-4];
361 if(strcmp(ptr
,".xml") != 0) continue;
362 strcpy(name
,eventdefs
);
363 strcat(name
,entry
->d_name
);
364 ltt_facility_open(t
,name
);
368 for(j
=0;j
<t
->facility_number
;j
++){
369 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, j
);
370 for(i
=0; i
<f
->event_number
; i
++){
372 setFieldsOffset(NULL
, et
, NULL
, t
);
378 gint
getControlFileInfo(LttTrace
*t
, char* control
)
381 struct dirent
*entry
;
382 char name
[DIR_NAME_SIZE
];
384 dir
= opendir(control
);
386 g_warning("Can not open directory: %s\n", control
);
390 while((entry
= readdir(dir
)) != NULL
){
391 if(strcmp(entry
->d_name
,"facilities") != 0 &&
392 strcmp(entry
->d_name
,"interrupts") != 0 &&
393 strcmp(entry
->d_name
,"processes") != 0) continue;
395 strcpy(name
,control
);
396 strcat(name
,entry
->d_name
);
397 if(ltt_tracefile_open_control(t
,name
))
404 gint
getCpuFileInfo(LttTrace
*t
, char* cpu
)
407 struct dirent
*entry
;
408 char name
[DIR_NAME_SIZE
];
412 g_warning("Can not open directory: %s\n", cpu
);
416 while((entry
= readdir(dir
)) != NULL
){
417 if(strcmp(entry
->d_name
,".") != 0 &&
418 strcmp(entry
->d_name
,"..") != 0 &&
419 strcmp(entry
->d_name
,".svn") != 0){
421 strcat(name
,entry
->d_name
);
422 ltt_tracefile_open_cpu(t
,name
);
429 /*****************************************************************************
430 *A trace is specified as a pathname to the directory containing all the
431 *associated data (control tracefiles, per cpu tracefiles, event
434 *When a trace is closed, all the associated facilities, types and fields
435 *are released as well.
439 /****************************************************************************
440 * get_absolute_pathname
442 * return the unique pathname in the system
444 * MD : Fixed this function so it uses realpath, dealing well with
445 * forgotten cases (.. were not used correctly before).
447 ****************************************************************************/
448 void get_absolute_pathname(const char *pathname
, char * abs_pathname
)
450 abs_pathname
[0] = '\0';
452 if ( realpath (pathname
, abs_pathname
) != NULL
)
456 /* error, return the original path unmodified */
457 strcpy(abs_pathname
, pathname
);
463 LttTrace
*ltt_trace_open(const char *pathname
)
466 LttSystemDescription
* sys_description
;
467 char eventdefs
[DIR_NAME_SIZE
];
468 char info
[DIR_NAME_SIZE
];
469 char control
[DIR_NAME_SIZE
];
470 char cpu
[DIR_NAME_SIZE
];
471 char tmp
[DIR_NAME_SIZE
];
472 char abs_path
[DIR_NAME_SIZE
];
473 gboolean has_slash
= FALSE
;
475 get_absolute_pathname(pathname
, abs_path
);
476 //establish the pathname to different directories
477 if(abs_path
[strlen(abs_path
)-1] == '/')has_slash
= TRUE
;
478 strcpy(eventdefs
,abs_path
);
479 if(!has_slash
)strcat(eventdefs
,"/");
480 strcat(eventdefs
,"eventdefs/");
482 strcpy(info
,abs_path
);
483 if(!has_slash
)strcat(info
,"/");
484 strcat(info
,"info/");
486 strcpy(control
,abs_path
);
487 if(!has_slash
)strcat(control
,"/");
488 strcat(control
,"control/");
490 strcpy(cpu
,abs_path
);
491 if(!has_slash
)strcat(cpu
,"/");
495 sys_description
= g_new(LttSystemDescription
, 1);
496 t
= g_new(LttTrace
, 1);
497 t
->pathname
= g_strdup(abs_path
);
498 t
->facility_number
= 0;
499 t
->control_tracefile_number
= 0;
500 t
->per_cpu_tracefile_number
= 0;
501 t
->system_description
= sys_description
;
502 t
->control_tracefiles
= g_ptr_array_new();
503 t
->per_cpu_tracefiles
= g_ptr_array_new();
504 t
->facilities
= g_ptr_array_new();
505 getDataEndianType(&(t
->my_arch_size
), &(t
->my_arch_endian
));
507 //get system description
509 strcat(tmp
,"system.xml");
510 if(getSystemInfo(sys_description
, tmp
)) {
511 g_ptr_array_free(t
->facilities
, TRUE
);
512 g_ptr_array_free(t
->per_cpu_tracefiles
, TRUE
);
513 g_ptr_array_free(t
->control_tracefiles
, TRUE
);
514 g_free(sys_description
);
522 //get facilities info
523 if(getFacilityInfo(t
,eventdefs
)) {
524 g_ptr_array_free(t
->facilities
, TRUE
);
525 g_ptr_array_free(t
->per_cpu_tracefiles
, TRUE
);
526 g_ptr_array_free(t
->control_tracefiles
, TRUE
);
527 g_free(sys_description
);
533 //get control tracefile info
534 getControlFileInfo(t
,control
);
536 if(getControlFileInfo(t,control)) {
537 g_ptr_array_free(t->facilities, TRUE);
538 g_ptr_array_free(t->per_cpu_tracefiles, TRUE);
539 g_ptr_array_free(t->control_tracefiles, TRUE);
540 g_free(sys_description);
544 }*/ // With fatal error
546 //get cpu tracefile info
547 if(getCpuFileInfo(t
,cpu
)) {
548 g_ptr_array_free(t
->facilities
, TRUE
);
549 g_ptr_array_free(t
->per_cpu_tracefiles
, TRUE
);
550 g_ptr_array_free(t
->control_tracefiles
, TRUE
);
551 g_free(sys_description
);
560 char * ltt_trace_name(LttTrace
*t
)
566 /******************************************************************************
567 * When we copy a trace, we want all the opening actions to happen again :
568 * the trace will be reopened and totally independant from the original.
569 * That's why we call ltt_trace_open.
570 *****************************************************************************/
571 LttTrace
*ltt_trace_copy(LttTrace
*self
)
573 return ltt_trace_open(self
->pathname
);
576 void ltt_trace_close(LttTrace
*t
)
584 //free system_description
585 g_free(t
->system_description
->description
);
586 g_free(t
->system_description
->node_name
);
587 g_free(t
->system_description
->domain_name
);
588 g_free(t
->system_description
->kernel_name
);
589 g_free(t
->system_description
->kernel_release
);
590 g_free(t
->system_description
->kernel_version
);
591 g_free(t
->system_description
->machine
);
592 g_free(t
->system_description
->processor
);
593 g_free(t
->system_description
->hardware_platform
);
594 g_free(t
->system_description
->operating_system
);
595 g_free(t
->system_description
);
597 //free control_tracefiles
598 for(i
=0;i
<t
->control_tracefile_number
;i
++){
599 tf
= (LttTracefile
*)g_ptr_array_index(t
->control_tracefiles
,i
);
600 ltt_tracefile_close(tf
);
602 g_ptr_array_free(t
->control_tracefiles
, TRUE
);
604 //free per_cpu_tracefiles
605 for(i
=0;i
<t
->per_cpu_tracefile_number
;i
++){
606 tf
= (LttTracefile
*)g_ptr_array_index(t
->per_cpu_tracefiles
,i
);
607 ltt_tracefile_close(tf
);
609 g_ptr_array_free(t
->per_cpu_tracefiles
, TRUE
);
612 for(i
=0;i
<t
->facility_number
;i
++){
613 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
614 ltt_facility_close(f
);
616 g_ptr_array_free(t
->facilities
, TRUE
);
624 /*****************************************************************************
625 *Get the system description of the trace
626 ****************************************************************************/
628 LttSystemDescription
*ltt_trace_system_description(LttTrace
*t
)
630 return t
->system_description
;
633 /*****************************************************************************
634 * The following functions discover the facilities of the trace
635 ****************************************************************************/
637 unsigned ltt_trace_facility_number(LttTrace
*t
)
639 return (unsigned)(t
->facility_number
);
642 LttFacility
*ltt_trace_facility_get(LttTrace
*t
, unsigned i
)
644 return (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
647 /*****************************************************************************
649 * ltt_trace_facility_find : find facilities in the trace
652 * name : facility name
654 * position : position of the facility in the trace
656 * : the number of facilities
657 ****************************************************************************/
659 unsigned ltt_trace_facility_find(LttTrace
*t
, char *name
, unsigned *position
)
661 unsigned int i
, count
=0;
663 for(i
=0;i
<t
->facility_number
;i
++){
664 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
665 if(strcmp(f
->name
,name
)==0){
667 if(count
==1) *position
= i
;
675 /*****************************************************************************
676 * Functions to discover all the event types in the trace
677 ****************************************************************************/
679 unsigned ltt_trace_eventtype_number(LttTrace
*t
)
684 for(i
=0;i
<t
->facility_number
;i
++){
685 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
686 count
+= f
->event_number
;
691 /* FIXME : performances could be improved with a better design for this
692 * function : sequential search through a container has never been the
693 * best on the critical path. */
694 LttFacility
* ltt_trace_facility_by_id(LttTrace
* trace
, unsigned id
)
696 LttFacility
* facility
= NULL
;
699 for(i
=0;i
<trace
->facility_number
;i
++){
700 LttFacility
*iter_facility
=
701 (LttFacility
*) g_ptr_array_index(trace
->facilities
,i
);
702 if(unlikely(id
>= iter_facility
->base_id
&&
703 id
< iter_facility
->base_id
+ iter_facility
->event_number
)) {
704 facility
= iter_facility
;
712 LttEventType
*ltt_trace_eventtype_get(LttTrace
*t
, unsigned evId
)
714 LttEventType
*event_type
;
717 f
= ltt_trace_facility_by_id(t
,evId
);
719 if(unlikely(!f
)) event_type
= NULL
;
720 else event_type
= f
->events
[evId
- f
->base_id
];
725 /*****************************************************************************
726 *There is one "per cpu" tracefile for each CPU, numbered from 0 to
727 *the maximum number of CPU in the system. When the number of CPU installed
728 *is less than the maximum, some positions are unused. There are also a
729 *number of "control" tracefiles (facilities, interrupts...).
730 ****************************************************************************/
731 unsigned ltt_trace_control_tracefile_number(LttTrace
*t
)
733 return t
->control_tracefile_number
;
736 unsigned ltt_trace_per_cpu_tracefile_number(LttTrace
*t
)
738 return t
->per_cpu_tracefile_number
;
741 /*****************************************************************************
742 *It is possible to search for the tracefiles by name or by CPU position.
743 *The index within the tracefiles of the same type is returned if found
744 *and a negative value otherwise.
745 ****************************************************************************/
747 int ltt_trace_control_tracefile_find(LttTrace
*t
, const gchar
*name
)
749 LttTracefile
* tracefile
;
751 for(i
=0;i
<t
->control_tracefile_number
;i
++){
752 tracefile
= (LttTracefile
*)g_ptr_array_index(t
->control_tracefiles
, i
);
753 if(strcmp(tracefile
->name
, name
)==0)break;
755 if(i
== t
->control_tracefile_number
) return -1;
759 /* not really useful. We just have to know that cpu tracefiles
760 * comes before control tracefiles.
762 int ltt_trace_per_cpu_tracefile_find(LttTrace
*t
, const gchar
*name
)
764 LttTracefile
* tracefile
;
766 for(i
=0;i
<t
->per_cpu_tracefile_number
;i
++){
767 tracefile
= (LttTracefile
*)g_ptr_array_index(t
->per_cpu_tracefiles
, i
);
768 if(strcmp(tracefile
->name
, name
)==0)break;
770 if(i
== t
->per_cpu_tracefile_number
) return -1;
774 /*****************************************************************************
775 *Get a specific tracefile
776 ****************************************************************************/
778 LttTracefile
*ltt_trace_control_tracefile_get(LttTrace
*t
, unsigned i
)
780 return (LttTracefile
*)g_ptr_array_index(t
->control_tracefiles
, i
);
783 LttTracefile
*ltt_trace_per_cpu_tracefile_get(LttTrace
*t
, unsigned i
)
785 return (LttTracefile
*)g_ptr_array_index(t
->per_cpu_tracefiles
, i
);
788 /*****************************************************************************
789 * Get the start time and end time of the trace
790 ****************************************************************************/
792 void ltt_trace_time_span_get(LttTrace
*t
, LttTime
*start
, LttTime
*end
)
794 LttTime startSmall
, startTmp
, endBig
, endTmp
;
798 for(i
=0;i
<t
->control_tracefile_number
;i
++){
799 tf
= g_ptr_array_index(t
->control_tracefiles
, i
);
801 startTmp
= tf
->a_block_start
->time
;
802 readBlock(tf
,tf
->block_number
);
803 endTmp
= tf
->a_block_end
->time
;
805 startSmall
= startTmp
;
810 if(ltt_time_compare(startSmall
,startTmp
) > 0) startSmall
= startTmp
;
811 if(ltt_time_compare(endBig
,endTmp
) < 0) endBig
= endTmp
;
814 for(i
=0;i
<t
->per_cpu_tracefile_number
;i
++){
815 tf
= g_ptr_array_index(t
->per_cpu_tracefiles
, i
);
817 startTmp
= tf
->a_block_start
->time
;
818 readBlock(tf
,tf
->block_number
);
819 endTmp
= tf
->a_block_end
->time
;
821 startSmall
= startTmp
;
825 if(ltt_time_compare(startSmall
,startTmp
) > 0) startSmall
= startTmp
;
826 if(ltt_time_compare(endBig
,endTmp
) < 0) endBig
= endTmp
;
829 if(start
!= NULL
) *start
= startSmall
;
830 if(end
!= NULL
) *end
= endBig
;
834 /*****************************************************************************
835 *Get the name of a tracefile
836 ****************************************************************************/
838 char *ltt_tracefile_name(LttTracefile
*tf
)
843 /*****************************************************************************
844 * Get the number of blocks in the tracefile
845 ****************************************************************************/
847 unsigned ltt_tracefile_block_number(LttTracefile
*tf
)
849 return tf
->block_number
;
852 /*****************************************************************************
854 * ltt_tracefile_seek_time: seek to the first event of the trace with time
855 * larger or equal to time
858 * time : criteria of the time
859 ****************************************************************************/
860 void ltt_tracefile_find_time_block(LttTracefile
*t
, LttTime time
,
861 int start_block
, int end_block
)
863 int err
, tmp_block
, s
, e
;
867 err
=readBlock(t
,start_block
);
868 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
869 if(start_block
== end_block
)return;
871 tailTime
= ltt_time_compare(t
->a_block_end
->time
, time
);
872 if(tailTime
>= 0) return;
874 err
=readBlock(t
,end_block
);
875 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
876 if(start_block
+1 == end_block
)return;
878 headTime
= ltt_time_compare(t
->a_block_start
->time
, time
);
879 if(headTime
<= 0 ) return;
881 tmp_block
= (end_block
+ start_block
)/2;
882 err
=readBlock(t
,tmp_block
);
883 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
885 headTime
= ltt_time_compare(t
->a_block_start
->time
, time
);
886 tailTime
= ltt_time_compare(t
->a_block_end
->time
, time
);
887 if(headTime
<= 0 && tailTime
>= 0) return;
893 ltt_tracefile_find_time_block(t
, time
, s
, e
);
901 ltt_tracefile_find_time_block(t
, time
, s
, e
);
906 void ltt_tracefile_backward_find_time_block(LttTracefile
*t
, LttTime time
)
908 int t_time
, h_time
, err
;
909 err
=readBlock(t
,t
->which_block
-1);
910 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
911 h_time
= ltt_time_compare(t
->a_block_start
->time
, time
);
912 t_time
= ltt_time_compare(t
->a_block_end
->time
, time
);
915 if(t
->which_block
== 1) return;
916 err
=readBlock(t
,t
->which_block
-1);
917 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
918 tmp
= ltt_time_compare(t
->a_block_end
->time
, time
);
919 if(tmp
== 0) return ltt_tracefile_seek_time(t
, time
);
920 err
=readBlock(t
,t
->which_block
+1);
921 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
922 }else if(h_time
> 0){
923 ltt_tracefile_find_time_block(t
, time
, 1, t
->which_block
);
924 return ltt_tracefile_seek_time(t
, time
) ;
926 if(t_time
>= 0) return ltt_tracefile_seek_time(t
, time
);
927 err
=readBlock(t
,t
->which_block
+1);
928 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
932 void ltt_tracefile_seek_time(LttTracefile
*t
, LttTime time
)
936 int headTime
= ltt_time_compare(t
->a_block_start
->time
, time
);
937 int tailTime
= ltt_time_compare(t
->a_block_end
->time
, time
);
940 if(headTime
< 0 && tailTime
> 0){
941 if(ltt_time_compare(t
->a_block_end
->time
, t
->current_event_time
) !=0) {
942 lttTime
= getEventTime(t
);
943 err
= ltt_time_compare(lttTime
, time
);
945 if(t
->which_event
==2 || ltt_time_compare(t
->prev_event_time
,time
)<0){
949 return ltt_tracefile_seek_time(t
, time
);
953 if(ltt_tracefile_read(t
,&ev
) == NULL
) {
954 g_print("End of file\n");
957 lttTime
= getEventTime(t
);
958 err
= ltt_time_compare(lttTime
, time
);
962 }else{//we are at the end of the block
964 return ltt_tracefile_seek_time(t
, time
);
966 }else if(headTime
>= 0){
967 if(t
->which_block
== 1){
970 if(ltt_time_compare(t
->prev_block_end_time
, time
) >= 0 ||
971 (t
->prev_block_end_time
.tv_sec
== 0 &&
972 t
->prev_block_end_time
.tv_nsec
== 0 )){
973 ltt_tracefile_backward_find_time_block(t
, time
);
978 }else if(tailTime
< 0){
979 if(t
->which_block
!= t
->block_number
){
980 ltt_tracefile_find_time_block(t
, time
, t
->which_block
+1, t
->block_number
);
981 return ltt_tracefile_seek_time(t
, time
);
983 t
->cur_event_pos
= t
->buffer
+ t
->block_size
;
984 g_print("End of file\n");
987 }else if(tailTime
== 0){
988 t
->cur_event_pos
= t
->last_event_pos
;
989 t
->current_event_time
= time
;
990 t
->cur_heart_beat_number
= 0;
991 t
->prev_event_time
.tv_sec
= 0;
992 t
->prev_event_time
.tv_nsec
= 0;
997 /*****************************************************************************
998 * Seek to the first event with position equal or larger to ep
1000 * Modified by Mathieu Desnoyers to used faster offset position instead of
1001 * re-reading the whole buffer.
1002 ****************************************************************************/
1004 void ltt_tracefile_seek_position(LttTracefile
*t
, const LttEventPosition
*ep
)
1006 //if we are at the right place, just return
1007 if(likely(t
->which_block
== ep
->block_num
&& t
->which_event
== ep
->event_num
))
1010 if(likely(t
->which_block
== ep
->block_num
)) updateTracefile(t
);
1011 else readBlock(t
,ep
->block_num
);
1012 //event offset is available
1013 if(likely(ep
->old_position
)){
1016 t
->which_event
= ep
->event_num
;
1017 t
->cur_event_pos
= t
->buffer
+ ep
->event_offset
;
1018 t
->prev_event_time
= ep
->event_time
;
1019 t
->current_event_time
= ep
->event_time
;
1020 t
->cur_heart_beat_number
= ep
->heart_beat_number
;
1021 t
->cur_cycle_count
= ep
->event_cycle_count
;
1023 /* This is a workaround for fast position seek */
1024 t
->last_event_pos
= ep
->last_event_pos
;
1025 t
->prev_block_end_time
= ep
->prev_block_end_time
;
1026 t
->prev_event_time
= ep
->prev_event_time
;
1027 t
->pre_cycle_count
= ep
->pre_cycle_count
;
1028 t
->count
= ep
->count
;
1029 t
->overflow_nsec
= ep
->overflow_nsec
;
1030 /* end of workaround */
1032 //update the fields of the current event and go to the next event
1034 if(unlikely(err
== ERANGE
)) g_error("event id is out of range\n");
1039 //only block number and event index are available
1040 //MD: warning : this is slow!
1041 g_warning("using slow O(n) tracefile seek position");
1044 while(likely(t
->which_event
< ep
->event_num
)) ltt_tracefile_read(t
, &event
);
1049 /*****************************************************************************
1051 * ltt_tracefile_read : read the current event, set the pointer to the next
1055 * LttEvent * : an event to be processed
1056 ****************************************************************************/
1058 LttEvent
*ltt_tracefile_read(LttTracefile
*t
, LttEvent
*event
)
1062 if(unlikely(t
->cur_event_pos
== t
->buffer
+ t
->block_size
)){
1063 if(unlikely(t
->which_block
== t
->block_number
)){
1066 err
= readBlock(t
, t
->which_block
+ 1);
1067 if(unlikely(err
))g_error("Can not read tracefile");
1070 event
->event_id
= (int)(*(guint16
*)(t
->cur_event_pos
));
1071 if(unlikely(event
->event_id
== TRACE_TIME_HEARTBEAT
))
1072 t
->cur_heart_beat_number
++;
1074 t
->prev_event_time
= t
->current_event_time
;
1075 // t->current_event_time = getEventTime(t);
1077 event
->time_delta
= *(guint32
*)(t
->cur_event_pos
+ EVENT_ID_SIZE
);
1078 event
->event_time
= t
->current_event_time
;
1079 event
->event_cycle_count
= t
->cur_cycle_count
;
1081 event
->tracefile
= t
;
1082 event
->data
= t
->cur_event_pos
+ EVENT_HEADER_SIZE
;
1083 event
->which_block
= t
->which_block
;
1084 event
->which_event
= t
->which_event
;
1086 /* This is a workaround for fast position seek */
1087 event
->last_event_pos
= t
->last_event_pos
;
1088 event
->prev_block_end_time
= t
->prev_block_end_time
;
1089 event
->prev_event_time
= t
->prev_event_time
;
1090 event
->pre_cycle_count
= t
->pre_cycle_count
;
1091 event
->count
= t
->count
;
1092 event
->overflow_nsec
= t
->overflow_nsec
;
1094 /* end of workaround */
1098 //update the fields of the current event and go to the next event
1100 if(unlikely(err
== ERANGE
)) g_error("event id is out of range\n");
1105 /****************************************************************************
1107 * readFile : wrap function to read from a file
1109 * fd : file descriptor
1110 * buf : buf to contain the content
1111 * size : number of bytes to be read
1112 * mesg : message to be printed if some thing goes wrong
1115 * EIO : can not read from the file
1116 ****************************************************************************/
1118 int readFile(int fd
, void * buf
, size_t size
, char * mesg
)
1120 ssize_t nbBytes
= read(fd
, buf
, size
);
1122 if((size_t)nbBytes
!= size
) {
1124 perror("Error in readFile : ");
1126 g_warning("%s",mesg
);
1133 /*****************************************************************************
1135 * skipEvent_pre_read_cycles : go to the next event,
1136 * update the necessary fields of the current event
1137 * increment the cycle counter, save it at the end.
1142 * ERANGE : event id is out of range
1143 ****************************************************************************/
1145 int skipEvent_pre_read_cycles(LttTracefile
* t
)
1152 evId
= (int)(*(guint16
*)(t
->cur_event_pos
));
1153 evData
= t
->cur_event_pos
+ EVENT_HEADER_SIZE
;
1155 evT
= ltt_trace_eventtype_get(t
->trace
,(unsigned)evId
);
1157 if(likely(evT
)) rootFld
= evT
->root_field
;
1160 if(likely(rootFld
)){
1161 //event has string/sequence or the last event is not the same event
1162 if(likely((evT
->latest_block
!=t
->which_block
|| evT
->latest_event
!=t
->which_event
)
1163 && rootFld
->field_fixed
== 0)){
1164 setFieldsOffset(t
, evT
, evData
, t
->trace
);
1166 t
->cur_event_pos
+= EVENT_HEADER_SIZE
+ rootFld
->field_size
;
1167 }else t
->cur_event_pos
+= EVENT_HEADER_SIZE
;
1169 //evT->latest_block = t->which_block;
1170 //evT->latest_event = t->which_event;
1172 //the next event is in the next block
1173 //if(unlikely(evId == TRACE_BLOCK_END)){
1174 // Specify end of buffer reached.
1175 // t->cur_event_pos = t->buffer + t->block_size;
1177 //g_critical("COUNT : %lu", t->cur_cycle_count);
1179 // t->current_event_time = getEventTime(t);
1188 /*****************************************************************************
1190 * ltt_tracefile_pre_read_cycles :
1191 * read the current event, increment the cycle counter
1195 * False : end of bloc reached
1196 ****************************************************************************/
1198 gboolean
ltt_tracefile_pre_read_cycles(LttTracefile
*tf
)
1203 // if(unlikely(t->cur_event_pos == t->buffer + t->block_size)){
1204 //if(unlikely(t->which_block == t->block_number)){
1207 // return FALSE; // end of bloc reached
1208 //err = readBlock(t, t->which_block + 1);
1209 //if(unlikely(err))g_error("Can not read tracefile");
1212 //event.event_id = (int)(*(guint16 *)(t->cur_event_pos));
1213 //if(unlikely(event.event_id == TRACE_TIME_HEARTBEAT))
1214 // t->cur_heart_beat_number++;
1216 //t->prev_event_time = t->current_event_time;
1217 // t->current_event_time = getEventTime(t);
1219 //event.time_delta = *(guint32 *)(t->cur_event_pos + EVENT_ID_SIZE);
1220 //event.event_time = t->current_event_time;
1221 //event.event_cycle_count = t->cur_cycle_count;
1223 //event.tracefile = t;
1224 //event.data = t->cur_event_pos + EVENT_HEADER_SIZE;
1225 //event.which_block = t->which_block;
1226 //event.which_event = t->which_event;
1228 /* This is a workaround for fast position seek */
1229 //event.last_event_pos = t->last_event_pos;
1230 //event.prev_block_end_time = t->prev_block_end_time;
1231 //event.prev_event_time = t->prev_event_time;
1232 //event.pre_cycle_count = t->pre_cycle_count;
1233 //event.count = t->count;
1234 /* end of workaround */
1237 /* Increment the cycle counter for the bloc */
1239 LttCycleCount cycle_count
; // cycle count for the current event
1240 LttCycleCount lEventTotalCycle
; // Total cycles from start for event
1241 LttCycleCount lEventNSec
; // Total nsecs from start for event
1242 LttTime lTimeOffset
; // Time offset in struct LttTime
1245 evId
= *(guint16
*)tf
->cur_event_pos
;
1247 // Calculate total time in cycles from start of buffer for this event
1248 cycle_count
= (LttCycleCount
)*(guint32
*)(tf
->cur_event_pos
+ EVENT_ID_SIZE
);
1249 //g_debug("event cycle count %llu", cycle_count);
1251 //gint64 delta_count = (gint64)(cycle_count - tf->pre_cycle_count);
1252 //LttCycleCount res_delta_count;
1253 gboolean comp_count
= cycle_count
< tf
->pre_cycle_count
;
1254 tf
->pre_cycle_count
= cycle_count
;
1256 if(unlikely(comp_count
)) {
1258 tf
->count
++; //increment wrap count
1261 //if(unlikely(cycle_count < tf->pre_cycle_count)) tf->count++;
1262 //if(unlikely(delta_count < 0)) {
1263 // tf->count++; //increment wrap count
1264 // keep in mind that delta_count is negative here.
1265 // res_delta_count = delta_count + 0x100000000ULL ;
1267 // res_delta_count = (LttCycleCount)delta_count;
1269 //cycle_count += (LttCycleCount)tf->count << 32;
1272 // if(tf->cur_heart_beat_number > tf->count)
1273 // cycle_count += (tf->cur_heart_beat_number - tf->count) << 32;
1275 //tf->cur_cycle_count = tf->cur_cycle_count + res_delta_count;
1276 tf
->cur_cycle_count
= cycle_count
| ((LttCycleCount
)tf
->count
<< 32);
1277 //g_debug("cur cycle count %llu", tf->cur_cycle_count);
1282 if(unlikely(evId
== TRACE_BLOCK_START
)){
1283 //g_debug("BLOCK START");
1284 }else if(unlikely(evId
== TRACE_BLOCK_END
)){
1285 //g_debug("BLOCK END");
1287 /* The goal of all this pre reading */
1288 tf
->a_block_end
->cycle_count
= tf
->cur_cycle_count
;
1289 //g_debug("end of block cycle count : %llu", tf->cur_cycle_count);
1294 //update the fields of the current event and go to the next event
1295 err
= skipEvent_pre_read_cycles(tf
);
1296 if(unlikely(err
== ERANGE
)) g_error("event id is out of range\n");
1302 /****************************************************************************
1304 * readBlock : read a block from the file
1306 * lttdes : ltt trace file
1307 * whichBlock : the block which will be read
1310 * EINVAL : lseek fail
1311 * EIO : can not read from the file
1312 ****************************************************************************/
1314 int readBlock(LttTracefile
* tf
, int whichBlock
)
1319 /* same block already opened requested */
1320 if((guint
)whichBlock
== tf
->which_block
) return 0;
1322 if(likely(whichBlock
- tf
->which_block
== 1 && tf
->which_block
!= 0)){
1323 tf
->prev_block_end_time
= tf
->a_block_end
->time
;
1324 tf
->prev_event_time
= tf
->a_block_end
->time
;
1326 tf
->prev_block_end_time
.tv_sec
= 0;
1327 tf
->prev_block_end_time
.tv_nsec
= 0;
1328 tf
->prev_event_time
.tv_sec
= 0;
1329 tf
->prev_event_time
.tv_nsec
= 0;
1332 nbBytes
=lseek(tf
->fd
,(off_t
)((whichBlock
-1)*tf
->block_size
), SEEK_SET
);
1333 if(unlikely(nbBytes
== -1)) return EINVAL
;
1335 if(unlikely(readFile(tf
->fd
,tf
->buffer
,tf
->block_size
,"Unable to read a block")))
1338 tf
->a_block_start
=(BlockStart
*) (tf
->buffer
+ EVENT_HEADER_SIZE
);
1339 lostSize
= *(guint32
*)(tf
->buffer
+ tf
->block_size
- sizeof(guint32
));
1340 tf
->a_block_end
=(BlockEnd
*)(tf
->buffer
+ tf
->block_size
-
1341 lostSize
+ EVENT_HEADER_SIZE
);
1342 tf
->last_event_pos
= tf
->buffer
+ tf
->block_size
- lostSize
;
1344 tf
->which_block
= whichBlock
;
1345 tf
->which_event
= 1;
1346 tf
->cur_event_pos
= tf
->buffer
;//the beginning of the block, block start ev
1347 tf
->cur_heart_beat_number
= 0;
1349 /* read the whole block to precalculate total of cycles in it */
1351 tf
->pre_cycle_count
= 0;
1352 tf
->cur_cycle_count
= 0;
1353 //g_debug("precalculating cycles begin for block %i", whichBlock);
1354 while(likely(ltt_tracefile_pre_read_cycles(tf
)));
1355 /* Rough approximation of cycles per usec to calculate
1356 * the real block start and end time.
1358 getCyclePerNsec(tf
);
1359 /* we are at end position, make end time more precise */
1360 /* Start overflow_nsec to a negative value : takes account of the
1361 * start of block cycle counter */
1362 tf
->overflow_nsec
= (-((double)tf
->a_block_start
->cycle_count
)
1363 * tf
->nsec_per_cycle
);
1364 /* put back the numbers corresponding to end time */
1365 tf
->overflow_nsec
+= tf
->one_overflow_nsec
* tf
->count
;
1367 tf
->a_block_end
->time
= getEventTime(tf
);
1369 //g_debug("precalculating cycles end for block %i", whichBlock);
1371 /* put back pointer at the beginning */
1373 tf
->pre_cycle_count
= 0;
1374 tf
->cur_cycle_count
= 0;
1375 tf
->which_event
= 1;
1376 tf
->cur_event_pos
= tf
->buffer
;//the beginning of the block, block start ev
1377 tf
->cur_heart_beat_number
= 0;
1379 /* Make start time more precise */
1380 /* Start overflow_nsec to a negative value : takes account of the
1381 * start of block cycle counter */
1382 tf
->overflow_nsec
= (-((double)tf
->a_block_start
->cycle_count
)
1383 * tf
->nsec_per_cycle
);
1386 tf
->a_block_start
->time
= getEventTime(tf
);
1388 /* recalculate the cycles per nsec, with now more precise start and end time
1390 getCyclePerNsec(tf
);
1391 tf
->overflow_nsec
= (-((double)tf
->a_block_start
->cycle_count
)
1392 * tf
->nsec_per_cycle
);
1396 tf
->current_event_time
= getEventTime(tf
);
1401 /*****************************************************************************
1403 * updateTracefile : reinitialize the info of the block which is already
1407 ****************************************************************************/
1409 void updateTracefile(LttTracefile
* tf
)
1411 tf
->which_event
= 1;
1412 tf
->cur_event_pos
= tf
->buffer
;
1413 tf
->current_event_time
= getEventTime(tf
);
1414 tf
->cur_heart_beat_number
= 0;
1416 tf
->prev_event_time
.tv_sec
= 0;
1417 tf
->prev_event_time
.tv_nsec
= 0;
1420 tf
->overflow_nsec
= (-((double)tf
->a_block_start
->cycle_count
)
1421 * tf
->nsec_per_cycle
);
1425 /*****************************************************************************
1427 * skipEvent : go to the next event, update the fields of the current event
1432 * ERANGE : event id is out of range
1433 ****************************************************************************/
1435 int skipEvent(LttTracefile
* t
)
1442 evId
= (int)(*(guint16
*)(t
->cur_event_pos
));
1443 evData
= t
->cur_event_pos
+ EVENT_HEADER_SIZE
;
1445 evT
= ltt_trace_eventtype_get(t
->trace
,(unsigned)evId
);
1447 if(likely(evT
)) rootFld
= evT
->root_field
;
1450 if(likely(rootFld
)){
1451 //event has string/sequence or the last event is not the same event
1452 if(likely((evT
->latest_block
!=t
->which_block
|| evT
->latest_event
!=t
->which_event
)
1453 && rootFld
->field_fixed
== 0)){
1454 setFieldsOffset(t
, evT
, evData
, t
->trace
);
1456 t
->cur_event_pos
+= EVENT_HEADER_SIZE
+ rootFld
->field_size
;
1457 }else t
->cur_event_pos
+= EVENT_HEADER_SIZE
;
1459 evT
->latest_block
= t
->which_block
;
1460 evT
->latest_event
= t
->which_event
;
1462 //the next event is in the next block
1463 if(unlikely(evId
== TRACE_BLOCK_END
)){
1464 t
->cur_event_pos
= t
->buffer
+ t
->block_size
;
1467 t
->current_event_time
= getEventTime(t
);
1474 /*****************************************************************************
1476 * getCyclePerNsec : calculate cycles per nsec for current block
1477 * MD: should have tracefile_read the whole block, so we know the
1478 * total of cycles in it before being called.
1481 ****************************************************************************/
1483 void getCyclePerNsec(LttTracefile
* t
)
1485 LttTime lBufTotalTime
; /* Total time for this buffer */
1486 double lBufTotalNSec
; /* Total time for this buffer in nsecs */
1487 double lBufTotalCycle
;/* Total cycles for this buffer */
1489 /* Calculate the total time for this buffer */
1490 lBufTotalTime
= ltt_time_sub(t
->a_block_end
->time
, t
->a_block_start
->time
);
1492 /* Calculate the total cycles for this bufffer */
1493 lBufTotalCycle
= t
->a_block_end
->cycle_count
;
1494 lBufTotalCycle
-= t
->a_block_start
->cycle_count
;
1496 /* Convert the total time to nsecs */
1497 lBufTotalNSec
= ltt_time_to_double(lBufTotalTime
);
1499 t
->nsec_per_cycle
= (double)lBufTotalNSec
/ (double)lBufTotalCycle
;
1500 /* Pre-multiply one overflow (2^32 cycles) by nsec_per_cycle */
1501 t
->one_overflow_nsec
= t
->nsec_per_cycle
* (double)0x100000000ULL
;
1503 /* See : http://www.azillionmonkeys.com/qed/adiv.html */
1504 // precalculate the reciprocal, so divisions will be really fast.
1505 // 2^32-1 == 0xFFFFFFFFULL
1507 // double int_res = lBufTotalCycle/lBufTotalNSec;
1508 // t->cycles_per_nsec_reciprocal =
1509 // ((0xFFFF+int_res)/int_res);
1514 /****************************************************************************
1516 * getEventTime : obtain the time of an event
1517 * NOTE : this function _really_ is on critical path.
1521 * LttTime : the time of the event
1522 ****************************************************************************/
1524 static inline LttTime
getEventTime(LttTracefile
* tf
)
1527 LttCycleCount cycle_count
; // cycle count for the current event
1528 //LttCycleCount lEventTotalCycle; // Total cycles from start for event
1529 gint64 lEventNSec
; // Total nsecs from start for event
1530 LttTime lTimeOffset
; // Time offset in struct LttTime
1533 evId
= *(guint16
*)tf
->cur_event_pos
;
1534 //if(unlikely(evId == TRACE_BLOCK_START)){
1536 // tf->pre_cycle_count = 0;
1537 // tf->cur_cycle_count = tf->a_block_start->cycle_count;
1538 // return tf->a_block_start->time;
1539 //}//else if(unlikely(evId == TRACE_BLOCK_END)){
1541 //tf->pre_cycle_count = 0;
1542 //tf->cur_cycle_count = tf->a_block_end->cycle_count;
1543 //return tf->a_block_end->time;
1546 // Calculate total time in cycles from start of buffer for this event
1547 cycle_count
= (LttCycleCount
)*(guint32
*)(tf
->cur_event_pos
+ EVENT_ID_SIZE
);
1548 //g_debug("event cycle count %llu", cycle_count);
1550 //gint64 delta_count = (gint64)(cycle_count - tf->pre_cycle_count);
1551 //LttCycleCount res_delta_count;
1552 gboolean comp_count
= cycle_count
< tf
->pre_cycle_count
;
1553 tf
->pre_cycle_count
= cycle_count
;
1555 if(unlikely(comp_count
)) {
1557 tf
->overflow_nsec
+= tf
->one_overflow_nsec
;
1558 tf
->count
++; //increment overflow count
1561 //if(unlikely(cycle_count < tf->pre_cycle_count)) tf->count++;
1562 //if(unlikely(delta_count < 0)) {
1563 // tf->count++; //increment wrap count
1564 // keep in mind that delta_count is negative here.
1565 // res_delta_count = delta_count + 0x100000000ULL ;
1567 // res_delta_count = (LttCycleCount)delta_count;
1569 //cycle_count += (LttCycleCount)tf->count << 32;
1572 // if(tf->cur_heart_beat_number > tf->count)
1573 // cycle_count += (tf->cur_heart_beat_number - tf->count) << 32;
1575 //tf->cur_cycle_count = tf->cur_cycle_count + res_delta_count;
1578 // Total cycle counter of the event.
1579 //tf->cur_cycle_count = cycle_count | ((LttCycleCount)tf->count << 32);
1581 //g_debug("cur cycle count %llu", tf->cur_cycle_count);
1583 // Total number of cycles since the beginning of the block
1584 //lEventTotalCycle = tf->cur_cycle_count
1585 // - tf->a_block_start->cycle_count;
1590 // Calculate total time in cycles from start of buffer for this event
1591 cycle_count
= (LttCycleCount
)*(guint32
*)(tf
->cur_event_pos
+ EVENT_ID_SIZE
);
1593 if(unlikely(cycle_count
< tf
->pre_cycle_count
)) tf
->count
++;
1594 tf
->pre_cycle_count
= cycle_count
;
1595 cycle_count
+= (LttCycleCount
)tf
->count
<< 32;
1598 // if(tf->cur_heart_beat_number > tf->count)
1599 // cycle_count += (tf->cur_heart_beat_number - tf->count) << 32;
1601 tf
->cur_cycle_count
= cycle_count
;
1603 lEventTotalCycle
= cycle_count
;
1604 lEventTotalCycle
-= tf
->a_block_start
->cycle_count
;
1606 // Convert it to nsecs
1607 //lEventNSec = (double)lEventTotalCycle * (double)tf->nsec_per_cycle;
1608 //lEventNSec = (tf->cycles_per_nsec_reciprocal * lEventTotalCycle) >> 16;
1610 // Determine offset in struct LttTime
1611 //lTimeOffset = ltt_time_from_double(lEventNSec);
1613 // We do not substract block start cycle count here, it has already been done
1614 // on the overflow_nsec
1615 // The result should never be negative, because the cycle count of
1616 // the event following the block start should be >= the previous one.
1617 lEventNSec
= (gint64
)((double)cycle_count
* tf
->nsec_per_cycle
)
1619 //g_assert(lEventNSec >= 0);
1620 lTimeOffset
= ltt_time_from_uint64(lEventNSec
);
1622 time
= ltt_time_add(tf
->a_block_start
->time
, lTimeOffset
);
1627 /*****************************************************************************
1629 * setFieldsOffset : set offset of the fields
1631 * tracefile : opened trace file
1632 * evT : the event type
1633 * evD : event data, it may be NULL
1634 ****************************************************************************/
1636 void setFieldsOffset(LttTracefile
*tf
,LttEventType
*evT
,void *evD
,LttTrace
* t
)
1638 LttField
* rootFld
= evT
->root_field
;
1639 // rootFld->base_address = evD;
1642 rootFld
->field_size
= getFieldtypeSize(tf
, evT
, 0,0,rootFld
, evD
,t
);
1645 /*****************************************************************************
1647 * getFieldtypeSize: get the size of the field type (primitive type)
1649 * tracefile : opened trace file
1651 * offsetRoot : offset from the root
1652 * offsetParent : offset from the parrent
1654 * evD : event data, it may be NULL
1656 * int : size of the field
1657 ****************************************************************************/
1659 int getFieldtypeSize(LttTracefile
* t
, LttEventType
* evT
, int offsetRoot
,
1660 int offsetParent
, LttField
* fld
, void *evD
, LttTrace
*trace
)
1662 int size
, size1
, element_number
, i
, offset1
, offset2
;
1663 LttType
* type
= fld
->field_type
;
1666 if(unlikely(evT
->latest_block
==t
->which_block
&&
1667 evT
->latest_event
==t
->which_event
)){
1668 return fld
->field_size
;
1672 if(likely(fld
->field_fixed
== 1)){
1673 if(fld
== evT
->root_field
) return fld
->field_size
;
1676 switch(type
->type_class
) {
1678 element_number
= (int) type
->element_number
;
1679 if(fld
->field_fixed
== -1){
1680 size
= getFieldtypeSize(t
, evT
, offsetRoot
,
1681 0,fld
->child
[0], NULL
, trace
);
1682 if(size
== 0){ //has string or sequence
1683 fld
->field_fixed
= 0;
1685 fld
->field_fixed
= 1;
1686 size
*= element_number
;
1688 }else if(fld
->field_fixed
== 0){// has string or sequence
1690 for(i
=0;i
<element_number
;i
++){
1691 size
+= getFieldtypeSize(t
, evT
, offsetRoot
+size
,size
,
1692 fld
->child
[0], evD
+size
, trace
);
1694 }else size
= fld
->field_size
;
1698 size1
= (int) ltt_type_size(trace
, type
);
1699 if(fld
->field_fixed
== -1){
1700 fld
->sequ_number_size
= size1
;
1701 fld
->field_fixed
= 0;
1702 size
= getFieldtypeSize(t
, evT
, offsetRoot
,
1703 0,fld
->child
[0], NULL
, trace
);
1704 fld
->element_size
= size
;
1706 element_number
= getIntNumber(size1
,evD
);
1707 type
->element_number
= element_number
;
1708 if(fld
->element_size
> 0){
1709 size
= element_number
* fld
->element_size
;
1710 }else{//sequence has string or sequence
1712 for(i
=0;i
<element_number
;i
++){
1713 size
+= getFieldtypeSize(t
, evT
, offsetRoot
+size
+size1
,size
+size1
,
1714 fld
->child
[0], evD
+size
+size1
, trace
);
1723 if(fld
->field_fixed
== -1){
1724 fld
->field_fixed
= 0;
1726 /* Hope my implementation is faster than strlen (Mathieu) */
1727 char *ptr
=(char*)evD
;
1728 while(*ptr
!= '\0') ptr
++;
1729 size
= ptr
- (char*)evD
+ 1; //include end : '\0'
1734 element_number
= (int) type
->element_number
;
1736 if(fld
->field_fixed
== -1){
1737 offset1
= offsetRoot
;
1739 for(i
=0;i
<element_number
;i
++){
1740 size1
=getFieldtypeSize(t
, evT
,offset1
,offset2
,
1741 fld
->child
[i
], NULL
, trace
);
1742 if(size1
> 0 && size
>= 0){
1744 if(offset1
>= 0) offset1
+= size1
;
1753 fld
->field_fixed
= 0;
1755 }else fld
->field_fixed
= 1;
1756 }else if(fld
->field_fixed
== 0){
1757 offset1
= offsetRoot
;
1759 for(i
=0;i
<element_number
;i
++){
1760 size
=getFieldtypeSize(t
,evT
,offset1
,offset2
,
1761 fld
->child
[i
],evD
+offset2
, trace
);
1766 }else size
= fld
->field_size
;
1770 if(fld
->field_fixed
== -1){
1771 size
= (int) ltt_type_size(trace
, type
);
1772 fld
->field_fixed
= 1;
1773 }else size
= fld
->field_size
;
1780 if(type
->type_class
!= LTT_STRUCT
&& type
->type_class
!= LTT_ARRAY
&&
1781 type
->type_class
!= LTT_SEQUENCE
&& type
->type_class
!= LTT_STRING
){
1782 if(fld
->field_fixed
== -1){
1783 size
= (int) ltt_type_size(trace
, type
);
1784 fld
->field_fixed
= 1;
1785 }else size
= fld
->field_size
;
1787 }else if(type
->type_class
== LTT_ARRAY
){
1788 element_number
= (int) type
->element_number
;
1789 if(fld
->field_fixed
== -1){
1790 size
= getFieldtypeSize(t
, evT
, offsetRoot
,0,fld
->child
[0], NULL
, trace
);
1791 if(size
== 0){ //has string or sequence
1792 fld
->field_fixed
= 0;
1794 fld
->field_fixed
= 1;
1795 size
*= element_number
;
1797 }else if(fld
->field_fixed
== 0){// has string or sequence
1799 for(i
=0;i
<element_number
;i
++){
1800 size
+= getFieldtypeSize(t
, evT
, offsetRoot
+size
,size
,
1801 fld
->child
[0], evD
+size
, trace
);
1803 }else size
= fld
->field_size
;
1805 }else if(type
->type_class
== LTT_SEQUENCE
){
1806 size1
= (int) ltt_type_size(trace
, type
);
1807 if(fld
->field_fixed
== -1){
1808 fld
->sequ_number_size
= size1
;
1809 fld
->field_fixed
= 0;
1810 size
= getFieldtypeSize(t
, evT
, offsetRoot
,0,fld
->child
[0], NULL
, trace
);
1811 fld
->element_size
= size
;
1813 element_number
= getIntNumber(size1
,evD
);
1814 type
->element_number
= element_number
;
1815 if(fld
->element_size
> 0){
1816 size
= element_number
* fld
->element_size
;
1817 }else{//sequence has string or sequence
1819 for(i
=0;i
<element_number
;i
++){
1820 size
+= getFieldtypeSize(t
, evT
, offsetRoot
+size
+size1
,size
+size1
,
1821 fld
->child
[0], evD
+size
+size1
, trace
);
1827 }else if(type
->type_class
== LTT_STRING
){
1829 if(fld
->field_fixed
== -1){
1830 fld
->field_fixed
= 0;
1832 size
= strlen((char*)evD
) + 1; //include end : '\0'
1835 }else if(type
->type_class
== LTT_STRUCT
){
1836 element_number
= (int) type
->element_number
;
1838 if(fld
->field_fixed
== -1){
1839 offset1
= offsetRoot
;
1841 for(i
=0;i
<element_number
;i
++){
1842 size1
=getFieldtypeSize(t
, evT
,offset1
,offset2
, fld
->child
[i
], NULL
, trace
);
1843 if(size1
> 0 && size
>= 0){
1845 if(offset1
>= 0) offset1
+= size1
;
1854 fld
->field_fixed
= 0;
1856 }else fld
->field_fixed
= 1;
1857 }else if(fld
->field_fixed
== 0){
1858 offset1
= offsetRoot
;
1860 for(i
=0;i
<element_number
;i
++){
1861 size
=getFieldtypeSize(t
,evT
,offset1
,offset2
,fld
->child
[i
],evD
+offset2
, trace
);
1866 }else size
= fld
->field_size
;
1870 fld
->offset_root
= offsetRoot
;
1871 fld
->offset_parent
= offsetParent
;
1873 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
1874 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
1876 fld
->field_size
= size
;
1882 /*****************************************************************************
1884 * getIntNumber : get an integer number
1886 * size : the size of the integer
1887 * evD : the event data
1889 * gint64 : a 64 bits integer
1890 ****************************************************************************/
1892 gint64
getIntNumber(int size
, void *evD
)
1897 case 1: i
= *(gint8
*)evD
; break;
1898 case 2: i
= *(gint16
*)evD
; break;
1899 case 4: i
= *(gint32
*)evD
; break;
1900 case 8: i
= *(gint64
*)evD
; break;
1901 default: i
= *(gint64
*)evD
;
1902 g_critical("getIntNumber : integer size %d unknown", size
);
1907 if(size
== 1) i
= *(gint8
*)evD
;
1908 else if(size
== 2) i
= *(gint16
*)evD
;
1909 else if(size
== 4) i
= *(gint32
*)evD
;
1910 else if(size
== 8) i
= *(gint64
*)evD
;
1916 /*****************************************************************************
1918 * getDataEndianType : get the data type size and endian type of the local
1921 * size : size of data type
1922 * endian : endian type, little or big
1923 ****************************************************************************/
1925 void getDataEndianType(LttArchSize
* size
, LttArchEndian
* endian
)
1929 int sizeInt
=sizeof(int), sizeLong
=sizeof(long), sizePointer
=sizeof(void *);
1931 if(c
== 1) *endian
= LTT_LITTLE_ENDIAN
;
1932 else *endian
= LTT_BIG_ENDIAN
;
1934 if(sizeInt
== 2 && sizeLong
== 4 && sizePointer
== 4)
1936 else if(sizeInt
== 4 && sizeLong
== 4 && sizePointer
== 4)
1938 else if(sizeInt
== 4 && sizeLong
== 8 && sizePointer
== 8)
1940 else if(sizeInt
== 8 && sizeLong
== 8 && sizePointer
== 8)
1942 else *size
= LTT_UNKNOWN
;
1945 /* get the node name of the system */
1947 char * ltt_trace_system_description_node_name (LttSystemDescription
* s
)
1949 return s
->node_name
;
1953 /* get the domain name of the system */
1955 char * ltt_trace_system_description_domain_name (LttSystemDescription
* s
)
1957 return s
->domain_name
;
1961 /* get the description of the system */
1963 char * ltt_trace_system_description_description (LttSystemDescription
* s
)
1965 return s
->description
;
1969 /* get the start time of the trace */
1971 LttTime
ltt_trace_system_description_trace_start_time(LttSystemDescription
*s
)
1973 return s
->trace_start
;
1977 LttTracefile
*ltt_tracefile_new()
1979 return g_new(LttTracefile
, 1);
1982 void ltt_tracefile_destroy(LttTracefile
*tf
)
1987 void ltt_tracefile_copy(LttTracefile
*dest
, const LttTracefile
*src
)