6 #include <linux/errno.h>
10 #include "ltt-private.h"
11 #include <ltt/trace.h>
12 #include <ltt/facility.h>
14 #define DIR_NAME_SIZE 256
16 /* set the offset of the fields belonging to the event,
17 need the information of the archecture */
18 void setFieldsOffset(LttTracefile
*tf
,LttEventType
*evT
,void *evD
,LttTrace
*t
);
20 /* get the size of the field type according to the archtecture's
21 size and endian type(info of the archecture) */
22 int getFieldtypeSize(LttTracefile
* tf
, LttEventType
* evT
, int offsetRoot
,
23 int offsetParent
, LttField
*fld
, void *evD
, LttTrace
* t
);
25 /* read a fixed size or a block information from the file (fd) */
26 int readFile(int fd
, void * buf
, size_t size
, char * mesg
);
27 int readBlock(LttTracefile
* tf
, int whichBlock
);
29 /* calculate cycles per nsec for current block */
30 void getCyclePerNsec(LttTracefile
* t
);
32 /* reinitialize the info of the block which is already in the buffer */
33 void updateTracefile(LttTracefile
* tf
);
35 /* go to the next event */
36 int skipEvent(LttTracefile
* t
);
39 /* Functions to parse system.xml file (using glib xml parser) */
40 static void parser_start_element (GMarkupParseContext
*context
,
41 const gchar
*element_name
,
42 const gchar
**attribute_names
,
43 const gchar
**attribute_values
,
48 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
49 if(strcmp("system", element_name
)){
50 g_warning("This is not system.xml file\n");
54 while(attribute_names
[i
]){
55 if(strcmp("node_name", attribute_names
[i
])==0){
56 des
->node_name
= g_strdup(attribute_values
[i
]);
57 }else if(strcmp("domainname", attribute_names
[i
])==0){
58 des
->domain_name
= g_strdup(attribute_values
[i
]);
59 }else if(strcmp("cpu", attribute_names
[i
])==0){
60 des
->nb_cpu
= atoi(attribute_values
[i
]);
61 }else if(strcmp("arch_size", attribute_names
[i
])==0){
62 if(strcmp(attribute_values
[i
],"LP32") == 0) des
->size
= LTT_LP32
;
63 else if(strcmp(attribute_values
[i
],"ILP32") == 0) des
->size
= LTT_ILP32
;
64 else if(strcmp(attribute_values
[i
],"LP64") == 0) des
->size
= LTT_LP64
;
65 else if(strcmp(attribute_values
[i
],"ILP64") == 0) des
->size
= LTT_ILP64
;
66 else if(strcmp(attribute_values
[i
],"UNKNOWN") == 0) des
->size
= LTT_UNKNOWN
;
67 }else if(strcmp("endian", attribute_names
[i
])==0){
68 if(strcmp(attribute_values
[i
],"LITTLE_ENDIAN") == 0)
69 des
->endian
= LTT_LITTLE_ENDIAN
;
70 else if(strcmp(attribute_values
[i
],"BIG_ENDIAN") == 0)
71 des
->endian
= LTT_BIG_ENDIAN
;
72 }else if(strcmp("kernel_name", attribute_names
[i
])==0){
73 des
->kernel_name
= g_strdup(attribute_values
[i
]);
74 }else if(strcmp("kernel_release", attribute_names
[i
])==0){
75 des
->kernel_release
= g_strdup(attribute_values
[i
]);
76 }else if(strcmp("kernel_version", attribute_names
[i
])==0){
77 des
->kernel_version
= g_strdup(attribute_values
[i
]);
78 }else if(strcmp("machine", attribute_names
[i
])==0){
79 des
->machine
= g_strdup(attribute_values
[i
]);
80 }else if(strcmp("processor", attribute_names
[i
])==0){
81 des
->processor
= g_strdup(attribute_values
[i
]);
82 }else if(strcmp("hardware_platform", attribute_names
[i
])==0){
83 des
->hardware_platform
= g_strdup(attribute_values
[i
]);
84 }else if(strcmp("operating_system", attribute_names
[i
])==0){
85 des
->operating_system
= g_strdup(attribute_values
[i
]);
86 }else if(strcmp("ltt_major_version", attribute_names
[i
])==0){
87 des
->ltt_major_version
= atoi(attribute_values
[i
]);
88 }else if(strcmp("ltt_minor_version", attribute_names
[i
])==0){
89 des
->ltt_minor_version
= atoi(attribute_values
[i
]);
90 }else if(strcmp("ltt_block_size", attribute_names
[i
])==0){
91 des
->ltt_block_size
= atoi(attribute_values
[i
]);
93 g_warning("Not a valid attribute\n");
100 static void parser_end_element (GMarkupParseContext
*context
,
101 const gchar
*element_name
,
107 static void parser_characters (GMarkupParseContext
*context
,
113 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
114 des
->description
= g_strdup(text
);
118 /*****************************************************************************
120 * ltt_tracefile_open : open a trace file, construct a LttTracefile
122 * t : the trace containing the tracefile
123 * fileName : path name of the trace file
125 * : a pointer to a tracefile
126 ****************************************************************************/
128 LttTracefile
* ltt_tracefile_open(LttTrace
* t
, char * fileName
)
131 struct stat lTDFStat
; /* Trace data file status */
132 BlockStart a_block_start
;
134 tf
= g_new(LttTracefile
, 1);
137 tf
->name
= g_strdup(fileName
);
139 tf
->fd
= open(fileName
, O_RDONLY
, 0);
141 g_error("Unable to open input data file %s\n", fileName
);
144 // Get the file's status
145 if(fstat(tf
->fd
, &lTDFStat
) < 0){
146 g_error("Unable to get the status of the input data file %s\n", fileName
);
149 // Is the file large enough to contain a trace
150 if(lTDFStat
.st_size
< sizeof(BlockStart
) + EVENT_HEADER_SIZE
){
151 g_print("The input data file %s does not contain a trace\n", fileName
);
158 //store the size of the file
159 tf
->file_size
= lTDFStat
.st_size
;
160 tf
->block_size
= t
->system_description
->ltt_block_size
;
161 tf
->block_number
= tf
->file_size
/ tf
->block_size
;
164 //allocate memory to contain the info of a block
165 tf
->buffer
= (void *) g_new(char, t
->system_description
->ltt_block_size
);
167 //read the first block
168 if(readBlock(tf
,1)) exit(1);
174 /*****************************************************************************
175 *Open control and per cpu tracefiles
176 ****************************************************************************/
178 void ltt_tracefile_open_cpu(LttTrace
*t
, char * tracefile_name
)
181 tf
= ltt_tracefile_open(t
,tracefile_name
);
183 t
->per_cpu_tracefile_number
++;
184 g_ptr_array_add(t
->per_cpu_tracefiles
, tf
);
187 void ltt_tracefile_open_control(LttTrace
*t
, char * control_name
)
197 tf
= ltt_tracefile_open(t
,control_name
);
199 t
->control_tracefile_number
++;
200 g_ptr_array_add(t
->control_tracefiles
,tf
);
202 //parse facilities tracefile to get base_id
203 if(strcmp(&control_name
[strlen(control_name
)-10],"facilities") ==0){
205 ev
= ltt_tracefile_read(tf
);
206 if(!ev
)return; // end of file
208 if(ev
->event_id
== TRACE_FACILITY_LOAD
){
210 fLoad
.name
= (char*)pos
;
211 fLoad
.checksum
= *(LttChecksum
*)(pos
+ strlen(fLoad
.name
));
212 fLoad
.base_code
= *(guint32
*)(pos
+ strlen(fLoad
.name
) + sizeof(LttChecksum
));
214 for(i
=0;i
<t
->facility_number
;i
++){
215 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
216 if(strcmp(f
->name
,fLoad
.name
)==0 && fLoad
.checksum
==f
->checksum
){
217 f
->base_id
= fLoad
.base_code
;
221 if(i
==t
->facility_number
)
222 g_error("Facility: %s, checksum: %d is not founded\n",
223 fLoad
.name
,fLoad
.checksum
);
224 }else if(ev
->event_id
== TRACE_BLOCK_START
){
226 }else if(ev
->event_id
== TRACE_BLOCK_END
){
228 }else g_error("Not valid facilities trace file\n");
233 /*****************************************************************************
235 * ltt_tracefile_close: close a trace file,
237 * t : tracefile which will be closed
238 ****************************************************************************/
240 void ltt_tracefile_close(LttTracefile
*t
)
249 /*****************************************************************************
250 *Get system information
251 ****************************************************************************/
252 void getSystemInfo(LttSystemDescription
* des
, char * pathname
)
255 char buf
[DIR_NAME_SIZE
];
256 char description
[4*DIR_NAME_SIZE
];
258 GMarkupParseContext
* context
;
260 GMarkupParser markup_parser
=
262 parser_start_element
,
265 NULL
, /* passthrough */
269 fp
= fopen(pathname
,"r");
271 g_error("Can not open file : %s\n", pathname
);
274 context
= g_markup_parse_context_new(&markup_parser
, 0, des
,NULL
);
276 while(fgets(buf
,DIR_NAME_SIZE
, fp
) != NULL
){
277 if(!g_markup_parse_context_parse(context
, buf
, DIR_NAME_SIZE
, &error
)){
278 g_warning("Can not parse xml file: \n%s\n", error
->message
);
285 /*****************************************************************************
286 *The following functions get facility/tracefile information
287 ****************************************************************************/
289 void getFacilityInfo(LttTrace
*t
, char* eventdefs
)
292 struct dirent
*entry
;
297 char name
[DIR_NAME_SIZE
];
299 dir
= opendir(eventdefs
);
300 if(!dir
) g_error("Can not open directory: %s\n", eventdefs
);
302 while((entry
= readdir(dir
)) != NULL
){
303 ptr
= &entry
->d_name
[strlen(entry
->d_name
)-4];
304 if(strcmp(ptr
,".xml") != 0) continue;
305 strcpy(name
,eventdefs
);
306 strcat(name
,entry
->d_name
);
307 ltt_facility_open(t
,name
);
311 for(j
=0;j
<t
->facility_number
;j
++){
312 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, j
);
313 for(i
=0; i
<f
->event_number
; i
++){
315 setFieldsOffset(NULL
, et
, NULL
, t
);
320 void getControlFileInfo(LttTrace
*t
, char* control
)
323 struct dirent
*entry
;
324 char name
[DIR_NAME_SIZE
];
326 dir
= opendir(control
);
327 if(!dir
) g_error("Can not open directory: %s\n", control
);
329 while((entry
= readdir(dir
)) != NULL
){
330 if(strcmp(entry
->d_name
,"facilities") != 0 &&
331 strcmp(entry
->d_name
,"interrupts") != 0 &&
332 strcmp(entry
->d_name
,"processes") != 0) continue;
334 strcpy(name
,control
);
335 strcat(name
,entry
->d_name
);
336 ltt_tracefile_open_control(t
,name
);
341 void getCpuFileInfo(LttTrace
*t
, char* cpu
)
344 struct dirent
*entry
;
345 char name
[DIR_NAME_SIZE
];
348 if(!dir
) g_error("Can not open directory: %s\n", cpu
);
350 while((entry
= readdir(dir
)) != NULL
){
351 if(strcmp(entry
->d_name
,".") != 0 &&
352 strcmp(entry
->d_name
,"..") != 0 ){
354 strcat(name
,entry
->d_name
);
355 ltt_tracefile_open_cpu(t
,name
);
361 /*****************************************************************************
362 *A trace is specified as a pathname to the directory containing all the
363 *associated data (control tracefiles, per cpu tracefiles, event
366 *When a trace is closed, all the associated facilities, types and fields
367 *are released as well.
368 ****************************************************************************/
370 void get_absolute_pathname(const char *pathname
, char * abs_pathname
)
373 size_t size
= DIR_NAME_SIZE
;
374 abs_pathname
[0] = '\0';
375 if(!getcwd(abs_pathname
, size
)){
376 g_warning("Can not get current working directory\n");
377 strcat(abs_pathname
, pathname
);
380 strcat(abs_pathname
,"/");
382 ptr
= (char*)pathname
;
384 while(*ptr
== '.' && *ptr1
== '.'){
388 strcat(abs_pathname
,ptr
);
391 LttTrace
*ltt_trace_open(const char *pathname
)
394 LttSystemDescription
* sys_description
;
395 char eventdefs
[DIR_NAME_SIZE
];
396 char info
[DIR_NAME_SIZE
];
397 char control
[DIR_NAME_SIZE
];
398 char cpu
[DIR_NAME_SIZE
];
399 char tmp
[DIR_NAME_SIZE
];
400 char abs_path
[DIR_NAME_SIZE
];
401 gboolean has_slash
= FALSE
;
403 get_absolute_pathname(pathname
, abs_path
);
405 //establish the pathname to different directories
406 if(abs_path
[strlen(abs_path
)-1] == '/')has_slash
= TRUE
;
407 strcpy(eventdefs
,abs_path
);
408 if(!has_slash
)strcat(eventdefs
,"/");
409 strcat(eventdefs
,"eventdefs/");
411 strcpy(info
,abs_path
);
412 if(!has_slash
)strcat(info
,"/");
413 strcat(info
,"info/");
415 strcpy(control
,abs_path
);
416 if(!has_slash
)strcat(control
,"/");
417 strcat(control
,"control/");
419 strcpy(cpu
,abs_path
);
420 if(!has_slash
)strcat(cpu
,"/");
424 t
= g_new(LttTrace
, 1);
425 sys_description
= g_new(LttSystemDescription
, 1);
426 t
->pathname
= g_strdup(abs_path
);
427 t
->facility_number
= 0;
428 t
->control_tracefile_number
= 0;
429 t
->per_cpu_tracefile_number
= 0;
430 t
->system_description
= sys_description
;
431 t
->control_tracefiles
= g_ptr_array_new();
432 t
->per_cpu_tracefiles
= g_ptr_array_new();
433 t
->facilities
= g_ptr_array_new();
434 getDataEndianType(&(t
->my_arch_size
), &(t
->my_arch_endian
));
436 //get system description
438 strcat(tmp
,"system.xml");
439 getSystemInfo(sys_description
, tmp
);
441 //get facilities info
442 getFacilityInfo(t
,eventdefs
);
444 //get control tracefile info
445 getControlFileInfo(t
,control
);
447 //get cpu tracefile info
448 getCpuFileInfo(t
,cpu
);
453 char * ltt_trace_name(LttTrace
*t
)
459 /******************************************************************************
460 * When we copy a trace, we want all the opening actions to happen again :
461 * the trace will be reopened and totally independant from the original.
462 * That's why we call ltt_trace_open.
463 *****************************************************************************/
464 LttTrace
*ltt_trace_copy(LttTrace
*self
)
466 return ltt_trace_open(self
->pathname
);
469 void ltt_trace_close(LttTrace
*t
)
477 //free system_description
478 g_free(t
->system_description
->description
);
479 g_free(t
->system_description
->node_name
);
480 g_free(t
->system_description
->domain_name
);
481 g_free(t
->system_description
->kernel_name
);
482 g_free(t
->system_description
->kernel_release
);
483 g_free(t
->system_description
->kernel_version
);
484 g_free(t
->system_description
->machine
);
485 g_free(t
->system_description
->processor
);
486 g_free(t
->system_description
->hardware_platform
);
487 g_free(t
->system_description
->operating_system
);
488 g_free(t
->system_description
);
490 //free control_tracefiles
491 for(i
=0;i
<t
->control_tracefile_number
;i
++){
492 tf
= (LttTracefile
*)g_ptr_array_index(t
->control_tracefiles
,i
);
493 ltt_tracefile_close(tf
);
495 g_ptr_array_free(t
->control_tracefiles
, TRUE
);
497 //free per_cpu_tracefiles
498 for(i
=0;i
<t
->per_cpu_tracefile_number
;i
++){
499 tf
= (LttTracefile
*)g_ptr_array_index(t
->per_cpu_tracefiles
,i
);
500 ltt_tracefile_close(tf
);
502 g_ptr_array_free(t
->per_cpu_tracefiles
, TRUE
);
505 for(i
=0;i
<t
->facility_number
;i
++){
506 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
507 ltt_facility_close(f
);
509 g_ptr_array_free(t
->facilities
, TRUE
);
517 /*****************************************************************************
518 *Get the system description of the trace
519 ****************************************************************************/
521 LttSystemDescription
*ltt_trace_system_description(LttTrace
*t
)
523 return t
->system_description
;
526 /*****************************************************************************
527 * The following functions discover the facilities of the trace
528 ****************************************************************************/
530 unsigned ltt_trace_facility_number(LttTrace
*t
)
532 return (unsigned)(t
->facility_number
);
535 LttFacility
*ltt_trace_facility_get(LttTrace
*t
, unsigned i
)
537 return (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
540 /*****************************************************************************
542 * ltt_trace_facility_find : find facilities in the trace
545 * name : facility name
547 * position : position of the facility in the trace
549 * : the number of facilities
550 ****************************************************************************/
552 unsigned ltt_trace_facility_find(LttTrace
*t
, char *name
, unsigned *position
)
556 for(i
=0;i
<t
->facility_number
;i
++){
557 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
558 if(strcmp(f
->name
,name
)==0){
560 if(count
==1) *position
= i
;
568 /*****************************************************************************
569 * Functions to discover all the event types in the trace
570 ****************************************************************************/
572 unsigned ltt_trace_eventtype_number(LttTrace
*t
)
577 for(i
=0;i
<t
->facility_number
;i
++){
578 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
579 count
+= f
->event_number
;
584 LttFacility
* ltt_trace_facility_by_id(LttTrace
* trace
, unsigned id
)
586 LttFacility
* facility
;
588 for(i
=0;i
<trace
->facility_number
;i
++){
589 facility
= (LttFacility
*) g_ptr_array_index(trace
->facilities
,i
);
590 if(id
>= facility
->base_id
&&
591 id
< facility
->base_id
+ facility
->event_number
)
594 if(i
==trace
->facility_number
) return NULL
;
595 else return facility
;
598 LttEventType
*ltt_trace_eventtype_get(LttTrace
*t
, unsigned evId
)
601 f
= ltt_trace_facility_by_id(t
,evId
);
603 return f
->events
[evId
- f
->base_id
];
606 /*****************************************************************************
607 *There is one "per cpu" tracefile for each CPU, numbered from 0 to
608 *the maximum number of CPU in the system. When the number of CPU installed
609 *is less than the maximum, some positions are unused. There are also a
610 *number of "control" tracefiles (facilities, interrupts...).
611 ****************************************************************************/
612 unsigned ltt_trace_control_tracefile_number(LttTrace
*t
)
614 return t
->control_tracefile_number
;
617 unsigned ltt_trace_per_cpu_tracefile_number(LttTrace
*t
)
619 return t
->per_cpu_tracefile_number
;
622 /*****************************************************************************
623 *It is possible to search for the tracefiles by name or by CPU position.
624 *The index within the tracefiles of the same type is returned if found
625 *and a negative value otherwise.
626 ****************************************************************************/
628 int ltt_trace_control_tracefile_find(LttTrace
*t
, char *name
)
630 LttTracefile
* tracefile
;
632 for(i
=0;i
<t
->control_tracefile_number
;i
++){
633 tracefile
= (LttTracefile
*)g_ptr_array_index(t
->control_tracefiles
, i
);
634 if(strcmp(tracefile
->name
, name
)==0)break;
636 if(i
== t
->control_tracefile_number
) return -1;
640 int ltt_trace_per_cpu_tracefile_find(LttTrace
*t
, unsigned i
)
642 LttTracefile
* tracefile
;
644 for(j
=0;j
<t
->per_cpu_tracefile_number
;j
++){
645 tracefile
= (LttTracefile
*)g_ptr_array_index(t
->per_cpu_tracefiles
, j
);
646 name
= atoi(tracefile
->name
);
647 if(name
== (int)i
)break;
649 if(j
== t
->per_cpu_tracefile_number
) return -1;
653 /*****************************************************************************
654 *Get a specific tracefile
655 ****************************************************************************/
657 LttTracefile
*ltt_trace_control_tracefile_get(LttTrace
*t
, unsigned i
)
659 return (LttTracefile
*)g_ptr_array_index(t
->control_tracefiles
, i
);
662 LttTracefile
*ltt_trace_per_cpu_tracefile_get(LttTrace
*t
, unsigned i
)
664 return (LttTracefile
*)g_ptr_array_index(t
->per_cpu_tracefiles
, i
);
667 /*****************************************************************************
668 * Get the start time and end time of the trace
669 ****************************************************************************/
671 void ltt_trace_time_span_get(LttTrace
*t
, LttTime
*start
, LttTime
*end
)
673 LttTime startSmall
, startTmp
, endBig
, endTmp
;
677 for(i
=0;i
<t
->control_tracefile_number
;i
++){
678 tf
= g_ptr_array_index(t
->control_tracefiles
, i
);
680 startTmp
= tf
->a_block_start
->time
;
681 readBlock(tf
,tf
->block_number
);
682 endTmp
= tf
->a_block_end
->time
;
684 startSmall
= startTmp
;
689 if(ltt_time_compare(startSmall
,startTmp
) > 0) startSmall
= startTmp
;
690 if(ltt_time_compare(endBig
,endTmp
) < 0) endBig
= endTmp
;
693 for(i
=0;i
<t
->per_cpu_tracefile_number
;i
++){
694 tf
= g_ptr_array_index(t
->per_cpu_tracefiles
, i
);
696 startTmp
= tf
->a_block_start
->time
;
697 readBlock(tf
,tf
->block_number
);
698 endTmp
= tf
->a_block_end
->time
;
700 startSmall
= startTmp
;
704 if(ltt_time_compare(startSmall
,startTmp
) > 0) startSmall
= startTmp
;
705 if(ltt_time_compare(endBig
,endTmp
) < 0) endBig
= endTmp
;
713 /*****************************************************************************
714 *Get the name of a tracefile
715 ****************************************************************************/
717 char *ltt_tracefile_name(LttTracefile
*tf
)
722 /*****************************************************************************
723 * Get the number of blocks in the tracefile
724 ****************************************************************************/
726 unsigned ltt_tracefile_block_number(LttTracefile
*tf
)
728 return tf
->block_number
;
731 /*****************************************************************************
733 * ltt_tracefile_seek_time: seek to the first event of the trace with time
734 * larger or equal to time
737 * time : criteria of the time
738 ****************************************************************************/
739 void ltt_tracefile_find_time_block(LttTracefile
*t
, LttTime time
,
740 int start_block
, int end_block
)
742 int err
, tmp_block
, s
, e
;
746 err
=readBlock(t
,start_block
);
747 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
748 if(start_block
== end_block
)return;
750 tailTime
= ltt_time_compare(t
->a_block_end
->time
, time
);
751 if(tailTime
>= 0) return;
753 err
=readBlock(t
,end_block
);
754 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
755 if(start_block
+1 == end_block
)return;
757 headTime
= ltt_time_compare(t
->a_block_start
->time
, time
);
758 if(headTime
<= 0 ) return;
760 tmp_block
= (end_block
+ start_block
)/2;
761 err
=readBlock(t
,tmp_block
);
762 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
764 headTime
= ltt_time_compare(t
->a_block_start
->time
, time
);
765 tailTime
= ltt_time_compare(t
->a_block_end
->time
, time
);
766 if(headTime
<= 0 && tailTime
>= 0) return;
772 ltt_tracefile_find_time_block(t
, time
, s
, e
);
780 ltt_tracefile_find_time_block(t
, time
, s
, e
);
785 void ltt_tracefile_backward_find_time_block(LttTracefile
*t
, LttTime time
)
787 int t_time
, h_time
, err
;
788 err
=readBlock(t
,t
->which_block
-1);
789 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
790 h_time
= ltt_time_compare(t
->a_block_start
->time
, time
);
791 t_time
= ltt_time_compare(t
->a_block_end
->time
, time
);
794 if(t
->which_block
== 1) return;
795 err
=readBlock(t
,t
->which_block
-1);
796 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
797 tmp
= ltt_time_compare(t
->a_block_end
->time
, time
);
798 if(tmp
== 0) return ltt_tracefile_seek_time(t
, time
);
799 err
=readBlock(t
,t
->which_block
+1);
800 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
801 }else if(h_time
> 0){
802 ltt_tracefile_find_time_block(t
, time
, 1, t
->which_block
);
803 return ltt_tracefile_seek_time(t
, time
) ;
805 if(t_time
>= 0) return ltt_tracefile_seek_time(t
, time
);
806 err
=readBlock(t
,t
->which_block
+1);
807 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
811 void ltt_tracefile_seek_time(LttTracefile
*t
, LttTime time
)
815 int headTime
= ltt_time_compare(t
->a_block_start
->time
, time
);
816 int tailTime
= ltt_time_compare(t
->a_block_end
->time
, time
);
819 if(headTime
< 0 && tailTime
> 0){
820 if(ltt_time_compare(t
->a_block_end
->time
, t
->current_event_time
) !=0) {
821 lttTime
= getEventTime(t
);
822 err
= ltt_time_compare(lttTime
, time
);
824 if(t
->which_event
==2 || (&t
->prev_event_time
,&time
)<0){
828 return ltt_tracefile_seek_time(t
, time
);
832 ev
= ltt_tracefile_read(t
);
834 g_print("End of file\n");
837 lttTime
= getEventTime(t
);
838 err
= ltt_time_compare(lttTime
, time
);
842 }else{//we are at the end of the block
844 return ltt_tracefile_seek_time(t
, time
);
846 }else if(headTime
>= 0){
847 if(t
->which_block
== 1){
850 if(ltt_time_compare(t
->prev_block_end_time
, time
) >= 0 ||
851 (t
->prev_block_end_time
.tv_sec
== 0 &&
852 t
->prev_block_end_time
.tv_nsec
== 0 )){
853 ltt_tracefile_backward_find_time_block(t
, time
);
858 }else if(tailTime
< 0){
859 if(t
->which_block
!= t
->block_number
){
860 ltt_tracefile_find_time_block(t
, time
, t
->which_block
+1, t
->block_number
);
861 return ltt_tracefile_seek_time(t
, time
);
863 t
->cur_event_pos
= t
->buffer
+ t
->block_size
;
864 g_print("End of file\n");
867 }else if(tailTime
== 0){
868 t
->cur_event_pos
= t
->last_event_pos
;
869 t
->current_event_time
= time
;
870 t
->cur_heart_beat_number
= 0;
871 t
->prev_event_time
.tv_sec
= 0;
872 t
->prev_event_time
.tv_nsec
= 0;
877 /*****************************************************************************
878 * Seek to the first event with position equal or larger to ep
879 ****************************************************************************/
881 void ltt_tracefile_seek_position(LttTracefile
*t
, LttEventPosition
*ep
)
883 //if we are at the right place, just return
884 if(t
->which_block
== ep
->block_num
&& t
->which_event
== ep
->event_num
)
887 if(t
->which_block
== ep
->block_num
) updateTracefile(t
);
888 else readBlock(t
,ep
->block_num
);
890 //event offset is availiable
891 if(ep
->old_position
){
892 t
->cur_heart_beat_number
= ep
->heart_beat_number
;
893 t
->cur_event_pos
= t
->buffer
+ ep
->event_offset
;
897 //only block number and event index are availiable
898 while(t
->which_event
< ep
->event_num
) ltt_tracefile_read(t
);
903 /*****************************************************************************
905 * ltt_tracefile_read : read the current event, set the pointer to the next
909 * LttEvent * : an event to be processed
910 ****************************************************************************/
912 LttEvent
*ltt_tracefile_read(LttTracefile
*t
)
914 LttEvent
* lttEvent
= &t
->an_event
;
917 if(t
->cur_event_pos
== t
->buffer
+ t
->block_size
){
918 if(t
->which_block
== t
->block_number
){
921 err
= readBlock(t
, t
->which_block
+ 1);
922 if(err
)g_error("Can not read tracefile");
925 lttEvent
->event_id
= (int)(*(guint16
*)(t
->cur_event_pos
));
926 if(lttEvent
->event_id
== TRACE_TIME_HEARTBEAT
)
927 t
->cur_heart_beat_number
++;
929 t
->prev_event_time
= t
->current_event_time
;
930 // t->current_event_time = getEventTime(t);
932 lttEvent
->time_delta
= *(guint32
*)(t
->cur_event_pos
+ EVENT_ID_SIZE
);
933 lttEvent
->event_time
= t
->current_event_time
;
935 lttEvent
->tracefile
= t
;
936 lttEvent
->data
= t
->cur_event_pos
+ EVENT_HEADER_SIZE
;
937 lttEvent
->which_block
= t
->which_block
;
938 lttEvent
->which_event
= t
->which_event
;
940 //update the fields of the current event and go to the next event
942 if(err
== ERANGE
) g_error("event id is out of range\n");
944 lttEvent
->event_cycle_count
= t
->cur_cycle_count
;
949 /****************************************************************************
951 * readFile : wrap function to read from a file
953 * fd : file descriptor
954 * buf : buf to contain the content
955 * size : number of bytes to be read
956 * mesg : message to be printed if some thing goes wrong
959 * EIO : can not read from the file
960 ****************************************************************************/
962 int readFile(int fd
, void * buf
, size_t size
, char * mesg
)
965 nbBytes
= read(fd
, buf
, size
);
973 /****************************************************************************
975 * readBlock : read a block from the file
977 * lttdes : ltt trace file
978 * whichBlock : the block which will be read
981 * EINVAL : lseek fail
982 * EIO : can not read from the file
983 ****************************************************************************/
985 int readBlock(LttTracefile
* tf
, int whichBlock
)
990 if(whichBlock
- tf
->which_block
== 1 && tf
->which_block
!= 0){
991 tf
->prev_block_end_time
= tf
->a_block_end
->time
;
992 tf
->prev_event_time
= tf
->a_block_end
->time
;
994 tf
->prev_block_end_time
.tv_sec
= 0;
995 tf
->prev_block_end_time
.tv_nsec
= 0;
996 tf
->prev_event_time
.tv_sec
= 0;
997 tf
->prev_event_time
.tv_nsec
= 0;
1000 nbBytes
=lseek(tf
->fd
,(off_t
)((whichBlock
-1)*tf
->block_size
), SEEK_SET
);
1001 if(nbBytes
== -1) return EINVAL
;
1003 if(readFile(tf
->fd
,tf
->buffer
,tf
->block_size
,"Unable to read a block"))
1006 tf
->a_block_start
=(BlockStart
*) (tf
->buffer
+ EVENT_HEADER_SIZE
);
1007 lostSize
= *(guint32
*)(tf
->buffer
+ tf
->block_size
- sizeof(guint32
));
1008 tf
->a_block_end
=(BlockEnd
*)(tf
->buffer
+ tf
->block_size
-
1009 lostSize
+ EVENT_HEADER_SIZE
);
1010 tf
->last_event_pos
= tf
->buffer
+ tf
->block_size
- lostSize
;
1012 tf
->which_block
= whichBlock
;
1013 tf
->which_event
= 1;
1014 tf
->cur_event_pos
= tf
->buffer
;//the beginning of the block, block start ev
1015 tf
->cur_heart_beat_number
= 0;
1017 getCyclePerNsec(tf
);
1019 tf
->current_event_time
= getEventTime(tf
);
1024 /*****************************************************************************
1026 * updateTracefile : reinitialize the info of the block which is already
1030 ****************************************************************************/
1032 void updateTracefile(LttTracefile
* tf
)
1034 tf
->which_event
= 1;
1035 tf
->cur_event_pos
= tf
->buffer
;
1036 tf
->current_event_time
= getEventTime(tf
);
1037 tf
->cur_heart_beat_number
= 0;
1039 tf
->prev_event_time
.tv_sec
= 0;
1040 tf
->prev_event_time
.tv_nsec
= 0;
1043 /*****************************************************************************
1045 * skipEvent : go to the next event, update the fields of the current event
1050 * ERANGE : event id is out of range
1051 ****************************************************************************/
1053 int skipEvent(LttTracefile
* t
)
1060 evId
= (int)(*(guint16
*)(t
->cur_event_pos
));
1061 evData
= t
->cur_event_pos
+ EVENT_HEADER_SIZE
;
1063 evT
= ltt_trace_eventtype_get(t
->trace
,(unsigned)evId
);
1065 if(evT
) rootFld
= evT
->root_field
;
1069 //event has string/sequence or the last event is not the same event
1070 if((evT
->latest_block
!=t
->which_block
|| evT
->latest_event
!=t
->which_event
)
1071 && rootFld
->field_fixed
== 0){
1072 setFieldsOffset(t
, evT
, evData
, t
->trace
);
1074 t
->cur_event_pos
+= EVENT_HEADER_SIZE
+ rootFld
->field_size
;
1075 }else t
->cur_event_pos
+= EVENT_HEADER_SIZE
;
1077 evT
->latest_block
= t
->which_block
;
1078 evT
->latest_event
= t
->which_event
;
1080 //the next event is in the next block
1081 if(evId
== TRACE_BLOCK_END
){
1082 t
->cur_event_pos
= t
->buffer
+ t
->block_size
;
1085 t
->current_event_time
= getEventTime(t
);
1091 /*****************************************************************************
1093 * getCyclePerNsec : calculate cycles per nsec for current block
1096 ****************************************************************************/
1098 void getCyclePerNsec(LttTracefile
* t
)
1100 LttTime lBufTotalTime
; /* Total time for this buffer */
1101 LttCycleCount lBufTotalNSec
; /* Total time for this buffer in nsecs */
1102 LttCycleCount lBufTotalCycle
;/* Total cycles for this buffer */
1104 /* Calculate the total time for this buffer */
1105 lBufTotalTime
= ltt_time_sub(t
->a_block_end
->time
, t
->a_block_start
->time
);
1107 /* Calculate the total cycles for this bufffer */
1108 lBufTotalCycle
= t
->a_block_end
->cycle_count
;
1109 lBufTotalCycle
-= t
->a_block_start
->cycle_count
;
1111 /* Convert the total time to nsecs */
1112 lBufTotalNSec
= lBufTotalTime
.tv_sec
;
1113 lBufTotalNSec
*= NANOSECONDS_PER_SECOND
;
1114 lBufTotalNSec
+= lBufTotalTime
.tv_nsec
;
1116 t
->cycle_per_nsec
= (double)lBufTotalCycle
/ (double)lBufTotalNSec
;
1119 /****************************************************************************
1121 * getEventTime : obtain the time of an event
1125 * LttTime : the time of the event
1126 ****************************************************************************/
1128 LttTime
getEventTime(LttTracefile
* tf
)
1131 LttCycleCount cycle_count
; // cycle count for the current event
1132 LttCycleCount lEventTotalCycle
; // Total cycles from start for event
1133 double lEventNSec
; // Total usecs from start for event
1134 LttTime lTimeOffset
; // Time offset in struct LttTime
1136 gint64 nanoSec
, tmpCycleCount
= (((guint64
)1)<<32);
1138 evId
= *(guint16
*)tf
->cur_event_pos
;
1139 if(evId
== TRACE_BLOCK_START
){
1141 tf
->pre_cycle_count
= 0;
1142 tf
->cur_cycle_count
= tf
->a_block_start
->cycle_count
;
1143 return tf
->a_block_start
->time
;
1144 }else if(evId
== TRACE_BLOCK_END
){
1146 tf
->pre_cycle_count
= 0;
1147 tf
->cur_cycle_count
= tf
->a_block_end
->cycle_count
;
1148 return tf
->a_block_end
->time
;
1151 // Calculate total time in cycles from start of buffer for this event
1152 cycle_count
= (LttCycleCount
)*(guint32
*)(tf
->cur_event_pos
+ EVENT_ID_SIZE
);
1154 if(cycle_count
< tf
->pre_cycle_count
)tf
->count
++;
1155 tf
->pre_cycle_count
= cycle_count
;
1156 cycle_count
+= tmpCycleCount
* tf
->count
;
1158 if(tf
->cur_heart_beat_number
> tf
->count
)
1159 cycle_count
+= tmpCycleCount
* (tf
->cur_heart_beat_number
- tf
->count
);
1161 tf
->cur_cycle_count
= cycle_count
;
1163 lEventTotalCycle
= cycle_count
;
1164 lEventTotalCycle
-= tf
->a_block_start
->cycle_count
;
1166 // Convert it to nsecs
1167 lEventNSec
= lEventTotalCycle
/ tf
->cycle_per_nsec
;
1168 nanoSec
= lEventNSec
;
1170 // Determine offset in struct LttTime
1171 lTimeOffset
.tv_nsec
= nanoSec
% NANOSECONDS_PER_SECOND
;
1172 lTimeOffset
.tv_sec
= nanoSec
/ NANOSECONDS_PER_SECOND
;
1174 time
= ltt_time_add(tf
->a_block_start
->time
, lTimeOffset
);
1179 /*****************************************************************************
1181 * setFieldsOffset : set offset of the fields
1183 * tracefile : opened trace file
1184 * evT : the event type
1185 * evD : event data, it may be NULL
1186 ****************************************************************************/
1188 void setFieldsOffset(LttTracefile
*tf
,LttEventType
*evT
,void *evD
,LttTrace
* t
)
1190 LttField
* rootFld
= evT
->root_field
;
1191 // rootFld->base_address = evD;
1194 rootFld
->field_size
= getFieldtypeSize(tf
, evT
, 0,0,rootFld
, evD
,t
);
1197 /*****************************************************************************
1199 * getFieldtypeSize: get the size of the field type (primitive type)
1201 * tracefile : opened trace file
1203 * offsetRoot : offset from the root
1204 * offsetParent : offset from the parrent
1206 * evD : event data, it may be NULL
1208 * int : size of the field
1209 ****************************************************************************/
1211 int getFieldtypeSize(LttTracefile
* t
, LttEventType
* evT
, int offsetRoot
,
1212 int offsetParent
, LttField
* fld
, void *evD
, LttTrace
*trace
)
1214 int size
, size1
, element_number
, i
, offset1
, offset2
;
1215 LttType
* type
= fld
->field_type
;
1218 if(evT
->latest_block
==t
->which_block
&& evT
->latest_event
==t
->which_event
){
1219 return fld
->field_size
;
1223 if(fld
->field_fixed
== 1){
1224 if(fld
== evT
->root_field
) return fld
->field_size
;
1227 if(type
->type_class
!= LTT_STRUCT
&& type
->type_class
!= LTT_ARRAY
&&
1228 type
->type_class
!= LTT_SEQUENCE
&& type
->type_class
!= LTT_STRING
){
1229 if(fld
->field_fixed
== -1){
1230 size
= (int) ltt_type_size(trace
, type
);
1231 fld
->field_fixed
= 1;
1232 }else size
= fld
->field_size
;
1234 }else if(type
->type_class
== LTT_ARRAY
){
1235 element_number
= (int) type
->element_number
;
1236 if(fld
->field_fixed
== -1){
1237 size
= getFieldtypeSize(t
, evT
, offsetRoot
,0,fld
->child
[0], NULL
, trace
);
1238 if(size
== 0){ //has string or sequence
1239 fld
->field_fixed
= 0;
1241 fld
->field_fixed
= 1;
1242 size
*= element_number
;
1244 }else if(fld
->field_fixed
== 0){// has string or sequence
1246 for(i
=0;i
<element_number
;i
++){
1247 size
+= getFieldtypeSize(t
, evT
, offsetRoot
+size
,size
,
1248 fld
->child
[0], evD
+size
, trace
);
1250 }else size
= fld
->field_size
;
1252 }else if(type
->type_class
== LTT_SEQUENCE
){
1253 size1
= (int) ltt_type_size(trace
, type
);
1254 if(fld
->field_fixed
== -1){
1255 fld
->sequ_number_size
= size1
;
1256 fld
->field_fixed
= 0;
1257 size
= getFieldtypeSize(t
, evT
, offsetRoot
,0,fld
->child
[0], NULL
, trace
);
1258 fld
->element_size
= size
;
1260 element_number
= getIntNumber(size1
,evD
);
1261 type
->element_number
= element_number
;
1262 if(fld
->element_size
> 0){
1263 size
= element_number
* fld
->element_size
;
1264 }else{//sequence has string or sequence
1266 for(i
=0;i
<element_number
;i
++){
1267 size
+= getFieldtypeSize(t
, evT
, offsetRoot
+size
+size1
,size
+size1
,
1268 fld
->child
[0], evD
+size
+size1
, trace
);
1274 }else if(type
->type_class
== LTT_STRING
){
1276 if(fld
->field_fixed
== -1){
1277 fld
->field_fixed
= 0;
1279 size
= strlen((char*)evD
) + 1; //include end : '\0'
1282 }else if(type
->type_class
== LTT_STRUCT
){
1283 element_number
= (int) type
->element_number
;
1285 if(fld
->field_fixed
== -1){
1286 offset1
= offsetRoot
;
1288 for(i
=0;i
<element_number
;i
++){
1289 size1
=getFieldtypeSize(t
, evT
,offset1
,offset2
, fld
->child
[i
], NULL
, trace
);
1290 if(size1
> 0 && size
>= 0){
1292 if(offset1
>= 0) offset1
+= size1
;
1301 fld
->field_fixed
= 0;
1303 }else fld
->field_fixed
= 1;
1304 }else if(fld
->field_fixed
== 0){
1305 offset1
= offsetRoot
;
1307 for(i
=0;i
<element_number
;i
++){
1308 size
=getFieldtypeSize(t
,evT
,offset1
,offset2
,fld
->child
[i
],evD
+offset2
, trace
);
1313 }else size
= fld
->field_size
;
1316 fld
->offset_root
= offsetRoot
;
1317 fld
->offset_parent
= offsetParent
;
1319 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
1320 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
1322 fld
->field_size
= size
;
1328 /*****************************************************************************
1330 * getIntNumber : get an integer number
1332 * size : the size of the integer
1333 * evD : the event data
1336 ****************************************************************************/
1338 int getIntNumber(int size
, void *evD
)
1341 if(size
== 1) i
= *(gint8
*)evD
;
1342 else if(size
== 2) i
= *(gint16
*)evD
;
1343 else if(size
== 4) i
= *(gint32
*)evD
;
1344 else if(size
== 8) i
= *(gint64
*)evD
;
1349 /*****************************************************************************
1351 * getDataEndianType : get the data type size and endian type of the local
1354 * size : size of data type
1355 * endian : endian type, little or big
1356 ****************************************************************************/
1358 void getDataEndianType(LttArchSize
* size
, LttArchEndian
* endian
)
1362 int sizeInt
=sizeof(int), sizeLong
=sizeof(long), sizePointer
=sizeof(void *);
1364 if(c
== 1) *endian
= LTT_LITTLE_ENDIAN
;
1365 else *endian
= LTT_BIG_ENDIAN
;
1367 if(sizeInt
== 2 && sizeLong
== 4 && sizePointer
== 4)
1369 else if(sizeInt
== 4 && sizeLong
== 4 && sizePointer
== 4)
1371 else if(sizeInt
== 4 && sizeLong
== 8 && sizePointer
== 8)
1373 else if(sizeInt
== 8 && sizeLong
== 8 && sizePointer
== 8)
1375 else *size
= LTT_UNKNOWN
;
1378 /* get the node name of the system */
1380 char * ltt_trace_system_description_node_name (LttSystemDescription
* s
)
1382 return s
->node_name
;
1386 /* get the domain name of the system */
1388 char * ltt_trace_system_description_domain_name (LttSystemDescription
* s
)
1390 return s
->domain_name
;
1394 /* get the description of the system */
1396 char * ltt_trace_system_description_description (LttSystemDescription
* s
)
1398 return s
->description
;
1402 /* get the start time of the trace */
1404 LttTime
ltt_trace_system_description_trace_start_time(LttSystemDescription
*s
)
1406 return s
->trace_start
;