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,
22 #include <sys/types.h>
24 #include <linux/errno.h>
33 #include "ltt-private.h"
34 #include <ltt/trace.h>
35 #include <ltt/facility.h>
37 #define DIR_NAME_SIZE 256
39 /* set the offset of the fields belonging to the event,
40 need the information of the archecture */
41 void setFieldsOffset(LttTracefile
*tf
,LttEventType
*evT
,void *evD
,LttTrace
*t
);
43 /* get the size of the field type according to the archtecture's
44 size and endian type(info of the archecture) */
45 int getFieldtypeSize(LttTracefile
* tf
, LttEventType
* evT
, int offsetRoot
,
46 int offsetParent
, LttField
*fld
, void *evD
, LttTrace
* t
);
48 /* read a fixed size or a block information from the file (fd) */
49 int readFile(int fd
, void * buf
, size_t size
, char * mesg
);
50 int readBlock(LttTracefile
* tf
, int whichBlock
);
52 /* calculate cycles per nsec for current block */
53 void getCyclePerNsec(LttTracefile
* t
);
55 /* reinitialize the info of the block which is already in the buffer */
56 void updateTracefile(LttTracefile
* tf
);
58 /* go to the next event */
59 int skipEvent(LttTracefile
* t
);
62 /* Functions to parse system.xml file (using glib xml parser) */
63 static void parser_start_element (GMarkupParseContext
*context
,
64 const gchar
*element_name
,
65 const gchar
**attribute_names
,
66 const gchar
**attribute_values
,
71 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
72 if(strcmp("system", element_name
)){
73 *error
= g_error_new(G_MARKUP_ERROR
,
75 "This is not system.xml file");
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
]);
118 *error
= g_error_new(G_MARKUP_ERROR
,
120 "Not a valid attribute");
127 static void parser_end_element (GMarkupParseContext
*context
,
128 const gchar
*element_name
,
134 static void parser_characters (GMarkupParseContext
*context
,
140 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
141 des
->description
= g_strdup(text
);
145 /*****************************************************************************
147 * ltt_tracefile_open : open a trace file, construct a LttTracefile
149 * t : the trace containing the tracefile
150 * fileName : path name of the trace file
152 * : a pointer to a tracefile
153 ****************************************************************************/
155 LttTracefile
* ltt_tracefile_open(LttTrace
* t
, char * fileName
)
158 struct stat lTDFStat
; /* Trace data file status */
159 BlockStart a_block_start
;
161 tf
= g_new(LttTracefile
, 1);
164 tf
->name
= g_strdup(fileName
);
166 tf
->fd
= open(fileName
, O_RDONLY
, 0);
168 g_warning("Unable to open input data file %s\n", fileName
);
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
);
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
);
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
;
198 //allocate memory to contain the info of a block
199 tf
->buffer
= (void *) g_new(char, t
->system_description
->ltt_block_size
);
201 //read the first block
202 if(readBlock(tf
,1)) exit(1);
208 /*****************************************************************************
209 *Open control and per cpu tracefiles
210 ****************************************************************************/
212 void ltt_tracefile_open_cpu(LttTrace
*t
, char * tracefile_name
)
215 tf
= ltt_tracefile_open(t
,tracefile_name
);
217 t
->per_cpu_tracefile_number
++;
218 g_ptr_array_add(t
->per_cpu_tracefiles
, tf
);
221 gint
ltt_tracefile_open_control(LttTrace
*t
, char * control_name
)
231 tf
= ltt_tracefile_open(t
,control_name
);
233 g_warning("ltt_tracefile_open_control : bad file descriptor");
236 t
->control_tracefile_number
++;
237 g_ptr_array_add(t
->control_tracefiles
,tf
);
239 //parse facilities tracefile to get base_id
240 if(strcmp(&control_name
[strlen(control_name
)-10],"facilities") ==0){
242 ev
= ltt_tracefile_read(tf
);
243 if(!ev
)return 0; // end of file
245 if(ev
->event_id
== TRACE_FACILITY_LOAD
){
247 fLoad
.name
= (char*)pos
;
248 fLoad
.checksum
= *(LttChecksum
*)(pos
+ strlen(fLoad
.name
));
249 fLoad
.base_code
= *(guint32
*)(pos
+ strlen(fLoad
.name
) + sizeof(LttChecksum
));
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
;
258 if(i
==t
->facility_number
) {
259 g_warning("Facility: %s, checksum: %d is not found\n",
260 fLoad
.name
,fLoad
.checksum
);
263 }else if(ev
->event_id
== TRACE_BLOCK_START
){
265 }else if(ev
->event_id
== TRACE_BLOCK_END
){
268 g_warning("Not valid facilities trace file\n");
276 /*****************************************************************************
278 * ltt_tracefile_close: close a trace file,
280 * t : tracefile which will be closed
281 ****************************************************************************/
283 void ltt_tracefile_close(LttTracefile
*t
)
292 /*****************************************************************************
293 *Get system information
294 ****************************************************************************/
295 gint
getSystemInfo(LttSystemDescription
* des
, char * pathname
)
298 char buf
[DIR_NAME_SIZE
];
299 char description
[4*DIR_NAME_SIZE
];
301 GMarkupParseContext
* context
;
302 GError
* error
= NULL
;
303 GMarkupParser markup_parser
=
305 parser_start_element
,
308 NULL
, /* passthrough */
312 fp
= fopen(pathname
,"r");
314 g_warning("Can not open file : %s\n", pathname
);
318 context
= g_markup_parse_context_new(&markup_parser
, 0, des
,NULL
);
320 while(fgets(buf
,DIR_NAME_SIZE
, fp
) != NULL
){
321 if(!g_markup_parse_context_parse(context
, buf
, DIR_NAME_SIZE
, &error
)){
323 g_warning("Can not parse xml file: \n%s\n", error
->message
);
326 g_markup_parse_context_free(context
);
331 g_markup_parse_context_free(context
);
336 /*****************************************************************************
337 *The following functions get facility/tracefile information
338 ****************************************************************************/
340 gint
getFacilityInfo(LttTrace
*t
, char* eventdefs
)
343 struct dirent
*entry
;
348 char name
[DIR_NAME_SIZE
];
350 dir
= opendir(eventdefs
);
352 g_warning("Can not open directory: %s\n", eventdefs
);
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
);
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
++){
369 setFieldsOffset(NULL
, et
, NULL
, t
);
375 gint
getControlFileInfo(LttTrace
*t
, char* control
)
378 struct dirent
*entry
;
379 char name
[DIR_NAME_SIZE
];
381 dir
= opendir(control
);
383 g_warning("Can not open directory: %s\n", control
);
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;
392 strcpy(name
,control
);
393 strcat(name
,entry
->d_name
);
394 if(ltt_tracefile_open_control(t
,name
))
401 gint
getCpuFileInfo(LttTrace
*t
, char* cpu
)
404 struct dirent
*entry
;
405 char name
[DIR_NAME_SIZE
];
409 g_warning("Can not open directory: %s\n", cpu
);
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){
418 strcat(name
,entry
->d_name
);
419 ltt_tracefile_open_cpu(t
,name
);
426 /*****************************************************************************
427 *A trace is specified as a pathname to the directory containing all the
428 *associated data (control tracefiles, per cpu tracefiles, event
431 *When a trace is closed, all the associated facilities, types and fields
432 *are released as well.
434 * MD : Fixed this function so it uses realpath, dealing well with
435 * forgotten cases (.. were not used correctly before).
437 ****************************************************************************/
439 void get_absolute_pathname(const char *pathname
, char * abs_pathname
)
442 size_t size
= DIR_NAME_SIZE
;
443 abs_pathname
[0] = '\0';
445 if ( realpath (pathname
, abs_pathname
) != NULL
)
449 // FIXME : Path is wrong, is it ok to return the pathname unmodified ?
450 strcpy(abs_pathname
, pathname
);
458 LttTrace
*ltt_trace_open(const char *pathname
)
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
;
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/");
477 strcpy(info
,abs_path
);
478 if(!has_slash
)strcat(info
,"/");
479 strcat(info
,"info/");
481 strcpy(control
,abs_path
);
482 if(!has_slash
)strcat(control
,"/");
483 strcat(control
,"control/");
485 strcpy(cpu
,abs_path
);
486 if(!has_slash
)strcat(cpu
,"/");
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
));
502 //get system description
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
);
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
);
528 //get control tracefile info
529 getControlFileInfo(t
,control
);
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);
539 }*/ // With fatal error
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
);
555 char * ltt_trace_name(LttTrace
*t
)
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 *****************************************************************************/
566 LttTrace
*ltt_trace_copy(LttTrace
*self
)
568 return ltt_trace_open(self
->pathname
);
571 void ltt_trace_close(LttTrace
*t
)
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
);
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
);
597 g_ptr_array_free(t
->control_tracefiles
, TRUE
);
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
);
604 g_ptr_array_free(t
->per_cpu_tracefiles
, TRUE
);
607 for(i
=0;i
<t
->facility_number
;i
++){
608 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
609 ltt_facility_close(f
);
611 g_ptr_array_free(t
->facilities
, TRUE
);
619 /*****************************************************************************
620 *Get the system description of the trace
621 ****************************************************************************/
623 LttSystemDescription
*ltt_trace_system_description(LttTrace
*t
)
625 return t
->system_description
;
628 /*****************************************************************************
629 * The following functions discover the facilities of the trace
630 ****************************************************************************/
632 unsigned ltt_trace_facility_number(LttTrace
*t
)
634 return (unsigned)(t
->facility_number
);
637 LttFacility
*ltt_trace_facility_get(LttTrace
*t
, unsigned i
)
639 return (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
642 /*****************************************************************************
644 * ltt_trace_facility_find : find facilities in the trace
647 * name : facility name
649 * position : position of the facility in the trace
651 * : the number of facilities
652 ****************************************************************************/
654 unsigned ltt_trace_facility_find(LttTrace
*t
, char *name
, unsigned *position
)
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){
662 if(count
==1) *position
= i
;
670 /*****************************************************************************
671 * Functions to discover all the event types in the trace
672 ****************************************************************************/
674 unsigned ltt_trace_eventtype_number(LttTrace
*t
)
679 for(i
=0;i
<t
->facility_number
;i
++){
680 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
681 count
+= f
->event_number
;
686 LttFacility
* ltt_trace_facility_by_id(LttTrace
* trace
, unsigned id
)
688 LttFacility
* facility
;
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
)
696 if(i
==trace
->facility_number
) return NULL
;
697 else return facility
;
700 LttEventType
*ltt_trace_eventtype_get(LttTrace
*t
, unsigned evId
)
703 f
= ltt_trace_facility_by_id(t
,evId
);
705 return f
->events
[evId
- f
->base_id
];
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 ****************************************************************************/
714 unsigned ltt_trace_control_tracefile_number(LttTrace
*t
)
716 return t
->control_tracefile_number
;
719 unsigned ltt_trace_per_cpu_tracefile_number(LttTrace
*t
)
721 return t
->per_cpu_tracefile_number
;
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 ****************************************************************************/
730 int ltt_trace_control_tracefile_find(LttTrace
*t
, char *name
)
732 LttTracefile
* tracefile
;
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;
738 if(i
== t
->control_tracefile_number
) return -1;
742 int ltt_trace_per_cpu_tracefile_find(LttTrace
*t
, unsigned i
)
744 LttTracefile
* tracefile
;
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;
751 if(j
== t
->per_cpu_tracefile_number
) return -1;
755 /*****************************************************************************
756 *Get a specific tracefile
757 ****************************************************************************/
759 LttTracefile
*ltt_trace_control_tracefile_get(LttTrace
*t
, unsigned i
)
761 return (LttTracefile
*)g_ptr_array_index(t
->control_tracefiles
, i
);
764 LttTracefile
*ltt_trace_per_cpu_tracefile_get(LttTrace
*t
, unsigned i
)
766 return (LttTracefile
*)g_ptr_array_index(t
->per_cpu_tracefiles
, i
);
769 /*****************************************************************************
770 * Get the start time and end time of the trace
771 ****************************************************************************/
773 void ltt_trace_time_span_get(LttTrace
*t
, LttTime
*start
, LttTime
*end
)
775 LttTime startSmall
, startTmp
, endBig
, endTmp
;
779 for(i
=0;i
<t
->control_tracefile_number
;i
++){
780 tf
= g_ptr_array_index(t
->control_tracefiles
, i
);
782 startTmp
= tf
->a_block_start
->time
;
783 readBlock(tf
,tf
->block_number
);
784 endTmp
= tf
->a_block_end
->time
;
786 startSmall
= startTmp
;
791 if(ltt_time_compare(startSmall
,startTmp
) > 0) startSmall
= startTmp
;
792 if(ltt_time_compare(endBig
,endTmp
) < 0) endBig
= endTmp
;
795 for(i
=0;i
<t
->per_cpu_tracefile_number
;i
++){
796 tf
= g_ptr_array_index(t
->per_cpu_tracefiles
, i
);
798 startTmp
= tf
->a_block_start
->time
;
799 readBlock(tf
,tf
->block_number
);
800 endTmp
= tf
->a_block_end
->time
;
802 startSmall
= startTmp
;
806 if(ltt_time_compare(startSmall
,startTmp
) > 0) startSmall
= startTmp
;
807 if(ltt_time_compare(endBig
,endTmp
) < 0) endBig
= endTmp
;
815 /*****************************************************************************
816 *Get the name of a tracefile
817 ****************************************************************************/
819 char *ltt_tracefile_name(LttTracefile
*tf
)
824 /*****************************************************************************
825 * Get the number of blocks in the tracefile
826 ****************************************************************************/
828 unsigned ltt_tracefile_block_number(LttTracefile
*tf
)
830 return tf
->block_number
;
833 /*****************************************************************************
835 * ltt_tracefile_seek_time: seek to the first event of the trace with time
836 * larger or equal to time
839 * time : criteria of the time
840 ****************************************************************************/
841 void ltt_tracefile_find_time_block(LttTracefile
*t
, LttTime time
,
842 int start_block
, int end_block
)
844 int err
, tmp_block
, s
, e
;
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;
852 tailTime
= ltt_time_compare(t
->a_block_end
->time
, time
);
853 if(tailTime
>= 0) return;
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;
859 headTime
= ltt_time_compare(t
->a_block_start
->time
, time
);
860 if(headTime
<= 0 ) return;
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
);
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;
874 ltt_tracefile_find_time_block(t
, time
, s
, e
);
882 ltt_tracefile_find_time_block(t
, time
, s
, e
);
887 void ltt_tracefile_backward_find_time_block(LttTracefile
*t
, LttTime time
)
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
);
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
) ;
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
);
913 void ltt_tracefile_seek_time(LttTracefile
*t
, LttTime time
)
917 int headTime
= ltt_time_compare(t
->a_block_start
->time
, time
);
918 int tailTime
= ltt_time_compare(t
->a_block_end
->time
, time
);
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
);
926 if(t
->which_event
==2 || (&t
->prev_event_time
,&time
)<0){
930 return ltt_tracefile_seek_time(t
, time
);
934 ev
= ltt_tracefile_read(t
);
936 g_print("End of file\n");
939 lttTime
= getEventTime(t
);
940 err
= ltt_time_compare(lttTime
, time
);
944 }else{//we are at the end of the block
946 return ltt_tracefile_seek_time(t
, time
);
948 }else if(headTime
>= 0){
949 if(t
->which_block
== 1){
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
);
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
);
965 t
->cur_event_pos
= t
->buffer
+ t
->block_size
;
966 g_print("End of file\n");
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;
979 /*****************************************************************************
980 * Seek to the first event with position equal or larger to ep
981 ****************************************************************************/
983 void ltt_tracefile_seek_position(LttTracefile
*t
, const LttEventPosition
*ep
)
985 //if we are at the right place, just return
986 if(t
->which_block
== ep
->block_num
&& t
->which_event
== ep
->event_num
)
989 if(t
->which_block
== ep
->block_num
) updateTracefile(t
);
990 else readBlock(t
,ep
->block_num
);
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
;
999 //only block number and event index are availiable
1000 while(t
->which_event
< ep
->event_num
) ltt_tracefile_read(t
);
1005 /*****************************************************************************
1007 * ltt_tracefile_read : read the current event, set the pointer to the next
1011 * LttEvent * : an event to be processed
1012 ****************************************************************************/
1014 LttEvent
*ltt_tracefile_read(LttTracefile
*t
)
1016 LttEvent
* lttEvent
= &t
->an_event
;
1019 if(t
->cur_event_pos
== t
->buffer
+ t
->block_size
){
1020 if(t
->which_block
== t
->block_number
){
1023 err
= readBlock(t
, t
->which_block
+ 1);
1024 if(err
)g_error("Can not read tracefile");
1027 lttEvent
->event_id
= (int)(*(guint16
*)(t
->cur_event_pos
));
1028 if(lttEvent
->event_id
== TRACE_TIME_HEARTBEAT
)
1029 t
->cur_heart_beat_number
++;
1031 t
->prev_event_time
= t
->current_event_time
;
1032 // t->current_event_time = getEventTime(t);
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
;
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
;
1043 //update the fields of the current event and go to the next event
1045 if(err
== ERANGE
) g_error("event id is out of range\n");
1050 /****************************************************************************
1052 * readFile : wrap function to read from a file
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
1060 * EIO : can not read from the file
1061 ****************************************************************************/
1063 int readFile(int fd
, void * buf
, size_t size
, char * mesg
)
1066 nbBytes
= read(fd
, buf
, size
);
1067 if(nbBytes
!= size
){
1068 printf("%s\n",mesg
);
1074 /****************************************************************************
1076 * readBlock : read a block from the file
1078 * lttdes : ltt trace file
1079 * whichBlock : the block which will be read
1082 * EINVAL : lseek fail
1083 * EIO : can not read from the file
1084 ****************************************************************************/
1086 int readBlock(LttTracefile
* tf
, int whichBlock
)
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
;
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;
1101 nbBytes
=lseek(tf
->fd
,(off_t
)((whichBlock
-1)*tf
->block_size
), SEEK_SET
);
1102 if(nbBytes
== -1) return EINVAL
;
1104 if(readFile(tf
->fd
,tf
->buffer
,tf
->block_size
,"Unable to read a block"))
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
;
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;
1118 getCyclePerNsec(tf
);
1120 tf
->current_event_time
= getEventTime(tf
);
1125 /*****************************************************************************
1127 * updateTracefile : reinitialize the info of the block which is already
1131 ****************************************************************************/
1133 void updateTracefile(LttTracefile
* tf
)
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;
1140 tf
->prev_event_time
.tv_sec
= 0;
1141 tf
->prev_event_time
.tv_nsec
= 0;
1144 /*****************************************************************************
1146 * skipEvent : go to the next event, update the fields of the current event
1151 * ERANGE : event id is out of range
1152 ****************************************************************************/
1154 int skipEvent(LttTracefile
* t
)
1161 evId
= (int)(*(guint16
*)(t
->cur_event_pos
));
1162 evData
= t
->cur_event_pos
+ EVENT_HEADER_SIZE
;
1164 evT
= ltt_trace_eventtype_get(t
->trace
,(unsigned)evId
);
1166 if(evT
) rootFld
= evT
->root_field
;
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
);
1175 t
->cur_event_pos
+= EVENT_HEADER_SIZE
+ rootFld
->field_size
;
1176 }else t
->cur_event_pos
+= EVENT_HEADER_SIZE
;
1178 evT
->latest_block
= t
->which_block
;
1179 evT
->latest_event
= t
->which_event
;
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
;
1186 t
->current_event_time
= getEventTime(t
);
1192 /*****************************************************************************
1194 * getCyclePerNsec : calculate cycles per nsec for current block
1197 ****************************************************************************/
1199 void getCyclePerNsec(LttTracefile
* t
)
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 */
1205 /* Calculate the total time for this buffer */
1206 lBufTotalTime
= ltt_time_sub(t
->a_block_end
->time
, t
->a_block_start
->time
);
1208 /* Calculate the total cycles for this bufffer */
1209 lBufTotalCycle
= t
->a_block_end
->cycle_count
;
1210 lBufTotalCycle
-= t
->a_block_start
->cycle_count
;
1212 /* Convert the total time to nsecs */
1213 lBufTotalNSec
= lBufTotalTime
.tv_sec
;
1214 lBufTotalNSec
*= NANOSECONDS_PER_SECOND
;
1215 lBufTotalNSec
+= lBufTotalTime
.tv_nsec
;
1217 t
->cycle_per_nsec
= (double)lBufTotalCycle
/ (double)lBufTotalNSec
;
1220 /****************************************************************************
1222 * getEventTime : obtain the time of an event
1226 * LttTime : the time of the event
1227 ****************************************************************************/
1229 LttTime
getEventTime(LttTracefile
* tf
)
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
1237 LttCycleCount tmpCycleCount
= (((LttCycleCount
)1)<<32);
1239 evId
= *(guint16
*)tf
->cur_event_pos
;
1240 if(evId
== TRACE_BLOCK_START
){
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
){
1247 tf
->pre_cycle_count
= 0;
1248 tf
->cur_cycle_count
= tf
->a_block_end
->cycle_count
;
1249 return tf
->a_block_end
->time
;
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
);
1255 if(cycle_count
< tf
->pre_cycle_count
)tf
->count
++;
1256 tf
->pre_cycle_count
= cycle_count
;
1257 cycle_count
+= tmpCycleCount
* tf
->count
;
1259 // if(tf->cur_heart_beat_number > tf->count)
1260 // cycle_count += tmpCycleCount * (tf->cur_heart_beat_number - tf->count);
1262 tf
->cur_cycle_count
= cycle_count
;
1264 lEventTotalCycle
= cycle_count
;
1265 lEventTotalCycle
-= tf
->a_block_start
->cycle_count
;
1267 // Convert it to nsecs
1268 lEventNSec
= (double)lEventTotalCycle
/ (double)tf
->cycle_per_nsec
;
1270 // Determine offset in struct LttTime
1271 lTimeOffset
.tv_nsec
= lEventNSec
% NANOSECONDS_PER_SECOND
;
1272 lTimeOffset
.tv_sec
= lEventNSec
/ NANOSECONDS_PER_SECOND
;
1274 time
= ltt_time_add(tf
->a_block_start
->time
, lTimeOffset
);
1279 /*****************************************************************************
1281 * setFieldsOffset : set offset of the fields
1283 * tracefile : opened trace file
1284 * evT : the event type
1285 * evD : event data, it may be NULL
1286 ****************************************************************************/
1288 void setFieldsOffset(LttTracefile
*tf
,LttEventType
*evT
,void *evD
,LttTrace
* t
)
1290 LttField
* rootFld
= evT
->root_field
;
1291 // rootFld->base_address = evD;
1294 rootFld
->field_size
= getFieldtypeSize(tf
, evT
, 0,0,rootFld
, evD
,t
);
1297 /*****************************************************************************
1299 * getFieldtypeSize: get the size of the field type (primitive type)
1301 * tracefile : opened trace file
1303 * offsetRoot : offset from the root
1304 * offsetParent : offset from the parrent
1306 * evD : event data, it may be NULL
1308 * int : size of the field
1309 ****************************************************************************/
1311 int getFieldtypeSize(LttTracefile
* t
, LttEventType
* evT
, int offsetRoot
,
1312 int offsetParent
, LttField
* fld
, void *evD
, LttTrace
*trace
)
1314 int size
, size1
, element_number
, i
, offset1
, offset2
;
1315 LttType
* type
= fld
->field_type
;
1318 if(evT
->latest_block
==t
->which_block
&& evT
->latest_event
==t
->which_event
){
1319 return fld
->field_size
;
1323 if(fld
->field_fixed
== 1){
1324 if(fld
== evT
->root_field
) return fld
->field_size
;
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
;
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;
1341 fld
->field_fixed
= 1;
1342 size
*= element_number
;
1344 }else if(fld
->field_fixed
== 0){// has string or sequence
1346 for(i
=0;i
<element_number
;i
++){
1347 size
+= getFieldtypeSize(t
, evT
, offsetRoot
+size
,size
,
1348 fld
->child
[0], evD
+size
, trace
);
1350 }else size
= fld
->field_size
;
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
;
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
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
);
1374 }else if(type
->type_class
== LTT_STRING
){
1376 if(fld
->field_fixed
== -1){
1377 fld
->field_fixed
= 0;
1379 size
= strlen((char*)evD
) + 1; //include end : '\0'
1382 }else if(type
->type_class
== LTT_STRUCT
){
1383 element_number
= (int) type
->element_number
;
1385 if(fld
->field_fixed
== -1){
1386 offset1
= offsetRoot
;
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){
1392 if(offset1
>= 0) offset1
+= size1
;
1401 fld
->field_fixed
= 0;
1403 }else fld
->field_fixed
= 1;
1404 }else if(fld
->field_fixed
== 0){
1405 offset1
= offsetRoot
;
1407 for(i
=0;i
<element_number
;i
++){
1408 size
=getFieldtypeSize(t
,evT
,offset1
,offset2
,fld
->child
[i
],evD
+offset2
, trace
);
1413 }else size
= fld
->field_size
;
1416 fld
->offset_root
= offsetRoot
;
1417 fld
->offset_parent
= offsetParent
;
1419 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
1420 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
1422 fld
->field_size
= size
;
1428 /*****************************************************************************
1430 * getIntNumber : get an integer number
1432 * size : the size of the integer
1433 * evD : the event data
1436 ****************************************************************************/
1438 int getIntNumber(int size
, void *evD
)
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
;
1449 /*****************************************************************************
1451 * getDataEndianType : get the data type size and endian type of the local
1454 * size : size of data type
1455 * endian : endian type, little or big
1456 ****************************************************************************/
1458 void getDataEndianType(LttArchSize
* size
, LttArchEndian
* endian
)
1462 int sizeInt
=sizeof(int), sizeLong
=sizeof(long), sizePointer
=sizeof(void *);
1464 if(c
== 1) *endian
= LTT_LITTLE_ENDIAN
;
1465 else *endian
= LTT_BIG_ENDIAN
;
1467 if(sizeInt
== 2 && sizeLong
== 4 && sizePointer
== 4)
1469 else if(sizeInt
== 4 && sizeLong
== 4 && sizePointer
== 4)
1471 else if(sizeInt
== 4 && sizeLong
== 8 && sizePointer
== 8)
1473 else if(sizeInt
== 8 && sizeLong
== 8 && sizePointer
== 8)
1475 else *size
= LTT_UNKNOWN
;
1478 /* get the node name of the system */
1480 char * ltt_trace_system_description_node_name (LttSystemDescription
* s
)
1482 return s
->node_name
;
1486 /* get the domain name of the system */
1488 char * ltt_trace_system_description_domain_name (LttSystemDescription
* s
)
1490 return s
->domain_name
;
1494 /* get the description of the system */
1496 char * ltt_trace_system_description_description (LttSystemDescription
* s
)
1498 return s
->description
;
1502 /* get the start time of the trace */
1504 LttTime
ltt_trace_system_description_trace_start_time(LttSystemDescription
*s
)
1506 return s
->trace_start
;