1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Xiangxiu Yang, Mathieu Desnoyers
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 static inline gint
getFieldtypeSize(LttTracefile
* tf
,
60 LttEventType
* evT
, gint offsetRoot
,
61 gint offsetParent
, LttField
*fld
, void *evD
, LttTrace
* t
);
63 /* read a fixed size or a block information from the file (fd) */
64 int readFile(int fd
, void * buf
, size_t size
, char * mesg
);
65 int readBlock(LttTracefile
* tf
, int whichBlock
);
67 /* calculate cycles per nsec for current block */
68 void getCyclePerNsec(LttTracefile
* t
);
70 /* reinitialize the info of the block which is already in the buffer */
71 void updateTracefile(LttTracefile
* tf
);
73 /* go to the next event */
74 int skipEvent(LttTracefile
* t
);
77 /* Functions to parse system.xml file (using glib xml parser) */
78 static void parser_start_element (GMarkupParseContext __UNUSED__
*context
,
79 const gchar
*element_name
,
80 const gchar
**attribute_names
,
81 const gchar
**attribute_values
,
86 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
87 if(strcmp("system", element_name
)){
88 *error
= g_error_new(G_MARKUP_ERROR
,
90 "This is not system.xml file");
94 while(attribute_names
[i
]){
95 if(strcmp("node_name", attribute_names
[i
])==0){
96 des
->node_name
= g_strdup(attribute_values
[i
]);
97 }else if(strcmp("domainname", attribute_names
[i
])==0){
98 des
->domain_name
= g_strdup(attribute_values
[i
]);
99 }else if(strcmp("cpu", attribute_names
[i
])==0){
100 des
->nb_cpu
= atoi(attribute_values
[i
]);
101 }else if(strcmp("arch_size", attribute_names
[i
])==0){
102 if(strcmp(attribute_values
[i
],"LP32") == 0) des
->size
= LTT_LP32
;
103 else if(strcmp(attribute_values
[i
],"ILP32") == 0) des
->size
= LTT_ILP32
;
104 else if(strcmp(attribute_values
[i
],"LP64") == 0) des
->size
= LTT_LP64
;
105 else if(strcmp(attribute_values
[i
],"ILP64") == 0) des
->size
= LTT_ILP64
;
106 else if(strcmp(attribute_values
[i
],"UNKNOWN") == 0) des
->size
= LTT_UNKNOWN
;
107 }else if(strcmp("endian", attribute_names
[i
])==0){
108 if(strcmp(attribute_values
[i
],"LITTLE_ENDIAN") == 0)
109 des
->endian
= LTT_LITTLE_ENDIAN
;
110 else if(strcmp(attribute_values
[i
],"BIG_ENDIAN") == 0)
111 des
->endian
= LTT_BIG_ENDIAN
;
112 }else if(strcmp("kernel_name", attribute_names
[i
])==0){
113 des
->kernel_name
= g_strdup(attribute_values
[i
]);
114 }else if(strcmp("kernel_release", attribute_names
[i
])==0){
115 des
->kernel_release
= g_strdup(attribute_values
[i
]);
116 }else if(strcmp("kernel_version", attribute_names
[i
])==0){
117 des
->kernel_version
= g_strdup(attribute_values
[i
]);
118 }else if(strcmp("machine", attribute_names
[i
])==0){
119 des
->machine
= g_strdup(attribute_values
[i
]);
120 }else if(strcmp("processor", attribute_names
[i
])==0){
121 des
->processor
= g_strdup(attribute_values
[i
]);
122 }else if(strcmp("hardware_platform", attribute_names
[i
])==0){
123 des
->hardware_platform
= g_strdup(attribute_values
[i
]);
124 }else if(strcmp("operating_system", attribute_names
[i
])==0){
125 des
->operating_system
= g_strdup(attribute_values
[i
]);
126 }else if(strcmp("ltt_major_version", attribute_names
[i
])==0){
127 des
->ltt_major_version
= atoi(attribute_values
[i
]);
128 }else if(strcmp("ltt_minor_version", attribute_names
[i
])==0){
129 des
->ltt_minor_version
= atoi(attribute_values
[i
]);
130 }else if(strcmp("ltt_block_size", attribute_names
[i
])==0){
131 des
->ltt_block_size
= atoi(attribute_values
[i
]);
133 *error
= g_error_new(G_MARKUP_ERROR
,
135 "Not a valid attribute");
142 static void parser_characters (GMarkupParseContext __UNUSED__
*context
,
144 gsize __UNUSED__ text_len
,
146 GError __UNUSED__
**error
)
148 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
149 des
->description
= g_strdup(text
);
153 /*****************************************************************************
155 * ltt_tracefile_open : open a trace file, construct a LttTracefile
157 * t : the trace containing the tracefile
158 * fileName : path name of the trace file
160 * : a pointer to a tracefile
161 ****************************************************************************/
163 LttTracefile
* ltt_tracefile_open(LttTrace
* t
, char * fileName
)
166 struct stat lTDFStat
; /* Trace data file status */
168 tf
= g_new(LttTracefile
, 1);
171 tf
->name
= g_strdup(fileName
);
173 tf
->fd
= open(fileName
, O_RDONLY
, 0);
175 g_warning("Unable to open input data file %s\n", fileName
);
181 // Get the file's status
182 if(fstat(tf
->fd
, &lTDFStat
) < 0){
183 g_warning("Unable to get the status of the input data file %s\n", fileName
);
190 // Is the file large enough to contain a trace
191 if(lTDFStat
.st_size
< (off_t
)(sizeof(BlockStart
) + EVENT_HEADER_SIZE
)){
192 g_print("The input data file %s does not contain a trace\n", fileName
);
199 //store the size of the file
200 tf
->file_size
= lTDFStat
.st_size
;
201 tf
->block_size
= t
->system_description
->ltt_block_size
;
202 tf
->block_number
= tf
->file_size
/ tf
->block_size
;
205 //allocate memory to contain the info of a block
206 tf
->buffer
= (void *) g_new(char, t
->system_description
->ltt_block_size
);
208 //read the first block
209 if(readBlock(tf
,1)) exit(1);
215 /*****************************************************************************
216 *Open control and per cpu tracefiles
217 ****************************************************************************/
219 void ltt_tracefile_open_cpu(LttTrace
*t
, char * tracefile_name
)
222 tf
= ltt_tracefile_open(t
,tracefile_name
);
224 t
->per_cpu_tracefile_number
++;
225 g_ptr_array_add(t
->per_cpu_tracefiles
, tf
);
228 gint
ltt_tracefile_open_control(LttTrace
*t
, char * control_name
)
237 tf
= ltt_tracefile_open(t
,control_name
);
239 g_warning("ltt_tracefile_open_control : bad file descriptor");
242 t
->control_tracefile_number
++;
243 g_ptr_array_add(t
->control_tracefiles
,tf
);
245 //parse facilities tracefile to get base_id
246 if(strcmp(&control_name
[strlen(control_name
)-10],"facilities") ==0){
248 if(!ltt_tracefile_read(tf
,&ev
)) return 0; // end of file
250 if(ev
.event_id
== TRACE_FACILITY_LOAD
){
252 fLoad
.name
= (char*)pos
;
253 fLoad
.checksum
= *(LttChecksum
*)(pos
+ strlen(fLoad
.name
));
254 fLoad
.base_code
= *(guint32
*)(pos
+ strlen(fLoad
.name
) + sizeof(LttChecksum
));
256 for(i
=0;i
<t
->facility_number
;i
++){
257 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
258 if(strcmp(f
->name
,fLoad
.name
)==0 && fLoad
.checksum
==f
->checksum
){
259 f
->base_id
= fLoad
.base_code
;
263 if(i
==t
->facility_number
) {
264 g_warning("Facility: %s, checksum: %u is not found",
265 fLoad
.name
,(unsigned int)fLoad
.checksum
);
268 }else if(ev
.event_id
== TRACE_BLOCK_START
){
270 }else if(ev
.event_id
== TRACE_BLOCK_END
){
273 g_warning("Not valid facilities trace file");
281 /*****************************************************************************
283 * ltt_tracefile_close: close a trace file,
285 * t : tracefile which will be closed
286 ****************************************************************************/
288 void ltt_tracefile_close(LttTracefile
*t
)
297 /*****************************************************************************
298 *Get system information
299 ****************************************************************************/
300 gint
getSystemInfo(LttSystemDescription
* des
, char * pathname
)
303 char buf
[DIR_NAME_SIZE
];
305 GMarkupParseContext
* context
;
306 GError
* error
= NULL
;
307 GMarkupParser markup_parser
=
309 parser_start_element
,
312 NULL
, /* passthrough */
316 fp
= fopen(pathname
,"r");
318 g_warning("Can not open file : %s\n", pathname
);
322 context
= g_markup_parse_context_new(&markup_parser
, 0, des
,NULL
);
324 while(fgets(buf
,DIR_NAME_SIZE
, fp
) != NULL
){
325 if(!g_markup_parse_context_parse(context
, buf
, DIR_NAME_SIZE
, &error
)){
327 g_warning("Can not parse xml file: \n%s\n", error
->message
);
330 g_markup_parse_context_free(context
);
335 g_markup_parse_context_free(context
);
340 /*****************************************************************************
341 *The following functions get facility/tracefile information
342 ****************************************************************************/
344 gint
getFacilityInfo(LttTrace
*t
, char* eventdefs
)
347 struct dirent
*entry
;
352 char name
[DIR_NAME_SIZE
];
354 dir
= opendir(eventdefs
);
356 g_warning("Can not open directory: %s\n", eventdefs
);
360 while((entry
= readdir(dir
)) != NULL
){
361 ptr
= &entry
->d_name
[strlen(entry
->d_name
)-4];
362 if(strcmp(ptr
,".xml") != 0) continue;
363 strcpy(name
,eventdefs
);
364 strcat(name
,entry
->d_name
);
365 ltt_facility_open(t
,name
);
369 for(j
=0;j
<t
->facility_number
;j
++){
370 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, j
);
371 for(i
=0; i
<f
->event_number
; i
++){
373 setFieldsOffset(NULL
, et
, NULL
, t
);
379 gint
getControlFileInfo(LttTrace
*t
, char* control
)
382 struct dirent
*entry
;
383 char name
[DIR_NAME_SIZE
];
385 dir
= opendir(control
);
387 g_warning("Can not open directory: %s\n", control
);
391 while((entry
= readdir(dir
)) != NULL
){
392 if(strcmp(entry
->d_name
,"facilities") != 0 &&
393 strcmp(entry
->d_name
,"interrupts") != 0 &&
394 strcmp(entry
->d_name
,"processes") != 0) continue;
396 strcpy(name
,control
);
397 strcat(name
,entry
->d_name
);
398 if(ltt_tracefile_open_control(t
,name
))
405 gint
getCpuFileInfo(LttTrace
*t
, char* cpu
)
408 struct dirent
*entry
;
409 char name
[DIR_NAME_SIZE
];
413 g_warning("Can not open directory: %s\n", cpu
);
417 while((entry
= readdir(dir
)) != NULL
){
418 if(strcmp(entry
->d_name
,".") != 0 &&
419 strcmp(entry
->d_name
,"..") != 0 &&
420 strcmp(entry
->d_name
,".svn") != 0){
422 strcat(name
,entry
->d_name
);
423 ltt_tracefile_open_cpu(t
,name
);
430 /*****************************************************************************
431 *A trace is specified as a pathname to the directory containing all the
432 *associated data (control tracefiles, per cpu tracefiles, event
435 *When a trace is closed, all the associated facilities, types and fields
436 *are released as well.
440 /****************************************************************************
441 * get_absolute_pathname
443 * return the unique pathname in the system
445 * MD : Fixed this function so it uses realpath, dealing well with
446 * forgotten cases (.. were not used correctly before).
448 ****************************************************************************/
449 void get_absolute_pathname(const char *pathname
, char * abs_pathname
)
451 abs_pathname
[0] = '\0';
453 if ( realpath (pathname
, abs_pathname
) != NULL
)
457 /* error, return the original path unmodified */
458 strcpy(abs_pathname
, pathname
);
464 LttTrace
*ltt_trace_open(const char *pathname
)
467 LttSystemDescription
* sys_description
;
468 char eventdefs
[DIR_NAME_SIZE
];
469 char info
[DIR_NAME_SIZE
];
470 char control
[DIR_NAME_SIZE
];
471 char cpu
[DIR_NAME_SIZE
];
472 char tmp
[DIR_NAME_SIZE
];
473 char abs_path
[DIR_NAME_SIZE
];
474 gboolean has_slash
= FALSE
;
476 get_absolute_pathname(pathname
, abs_path
);
477 //establish the pathname to different directories
478 if(abs_path
[strlen(abs_path
)-1] == '/')has_slash
= TRUE
;
479 strcpy(eventdefs
,abs_path
);
480 if(!has_slash
)strcat(eventdefs
,"/");
481 strcat(eventdefs
,"eventdefs/");
483 strcpy(info
,abs_path
);
484 if(!has_slash
)strcat(info
,"/");
485 strcat(info
,"info/");
487 strcpy(control
,abs_path
);
488 if(!has_slash
)strcat(control
,"/");
489 strcat(control
,"control/");
491 strcpy(cpu
,abs_path
);
492 if(!has_slash
)strcat(cpu
,"/");
496 sys_description
= g_new(LttSystemDescription
, 1);
497 t
= g_new(LttTrace
, 1);
498 t
->pathname
= g_strdup(abs_path
);
499 t
->facility_number
= 0;
500 t
->control_tracefile_number
= 0;
501 t
->per_cpu_tracefile_number
= 0;
502 t
->system_description
= sys_description
;
503 t
->control_tracefiles
= g_ptr_array_new();
504 t
->per_cpu_tracefiles
= g_ptr_array_new();
505 t
->facilities
= g_ptr_array_new();
506 getDataEndianType(&(t
->my_arch_size
), &(t
->my_arch_endian
));
508 //get system description
510 strcat(tmp
,"system.xml");
511 if(getSystemInfo(sys_description
, tmp
)) {
512 g_ptr_array_free(t
->facilities
, TRUE
);
513 g_ptr_array_free(t
->per_cpu_tracefiles
, TRUE
);
514 g_ptr_array_free(t
->control_tracefiles
, TRUE
);
515 g_free(sys_description
);
523 //get facilities info
524 if(getFacilityInfo(t
,eventdefs
)) {
525 g_ptr_array_free(t
->facilities
, TRUE
);
526 g_ptr_array_free(t
->per_cpu_tracefiles
, TRUE
);
527 g_ptr_array_free(t
->control_tracefiles
, TRUE
);
528 g_free(sys_description
);
534 //get control tracefile info
535 getControlFileInfo(t
,control
);
537 if(getControlFileInfo(t,control)) {
538 g_ptr_array_free(t->facilities, TRUE);
539 g_ptr_array_free(t->per_cpu_tracefiles, TRUE);
540 g_ptr_array_free(t->control_tracefiles, TRUE);
541 g_free(sys_description);
545 }*/ // With fatal error
547 //get cpu tracefile info
548 if(getCpuFileInfo(t
,cpu
)) {
549 g_ptr_array_free(t
->facilities
, TRUE
);
550 g_ptr_array_free(t
->per_cpu_tracefiles
, TRUE
);
551 g_ptr_array_free(t
->control_tracefiles
, TRUE
);
552 g_free(sys_description
);
561 char * ltt_trace_name(LttTrace
*t
)
567 /******************************************************************************
568 * When we copy a trace, we want all the opening actions to happen again :
569 * the trace will be reopened and totally independant from the original.
570 * That's why we call ltt_trace_open.
571 *****************************************************************************/
572 LttTrace
*ltt_trace_copy(LttTrace
*self
)
574 return ltt_trace_open(self
->pathname
);
577 void ltt_trace_close(LttTrace
*t
)
585 //free system_description
586 g_free(t
->system_description
->description
);
587 g_free(t
->system_description
->node_name
);
588 g_free(t
->system_description
->domain_name
);
589 g_free(t
->system_description
->kernel_name
);
590 g_free(t
->system_description
->kernel_release
);
591 g_free(t
->system_description
->kernel_version
);
592 g_free(t
->system_description
->machine
);
593 g_free(t
->system_description
->processor
);
594 g_free(t
->system_description
->hardware_platform
);
595 g_free(t
->system_description
->operating_system
);
596 g_free(t
->system_description
);
598 //free control_tracefiles
599 for(i
=0;i
<t
->control_tracefile_number
;i
++){
600 tf
= (LttTracefile
*)g_ptr_array_index(t
->control_tracefiles
,i
);
601 ltt_tracefile_close(tf
);
603 g_ptr_array_free(t
->control_tracefiles
, TRUE
);
605 //free per_cpu_tracefiles
606 for(i
=0;i
<t
->per_cpu_tracefile_number
;i
++){
607 tf
= (LttTracefile
*)g_ptr_array_index(t
->per_cpu_tracefiles
,i
);
608 ltt_tracefile_close(tf
);
610 g_ptr_array_free(t
->per_cpu_tracefiles
, TRUE
);
613 for(i
=0;i
<t
->facility_number
;i
++){
614 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
615 ltt_facility_close(f
);
617 g_ptr_array_free(t
->facilities
, TRUE
);
625 /*****************************************************************************
626 *Get the system description of the trace
627 ****************************************************************************/
629 LttSystemDescription
*ltt_trace_system_description(LttTrace
*t
)
631 return t
->system_description
;
634 /*****************************************************************************
635 * The following functions discover the facilities of the trace
636 ****************************************************************************/
638 unsigned ltt_trace_facility_number(LttTrace
*t
)
640 return (unsigned)(t
->facility_number
);
643 LttFacility
*ltt_trace_facility_get(LttTrace
*t
, unsigned i
)
645 return (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
648 /*****************************************************************************
650 * ltt_trace_facility_find : find facilities in the trace
653 * name : facility name
655 * position : position of the facility in the trace
657 * : the number of facilities
658 ****************************************************************************/
660 unsigned ltt_trace_facility_find(LttTrace
*t
, char *name
, unsigned *position
)
662 unsigned int i
, count
=0;
664 for(i
=0;i
<t
->facility_number
;i
++){
665 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
666 if(strcmp(f
->name
,name
)==0){
668 if(count
==1) *position
= i
;
676 /*****************************************************************************
677 * Functions to discover all the event types in the trace
678 ****************************************************************************/
680 unsigned ltt_trace_eventtype_number(LttTrace
*t
)
685 for(i
=0;i
<t
->facility_number
;i
++){
686 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
687 count
+= f
->event_number
;
692 /* FIXME : performances could be improved with a better design for this
693 * function : sequential search through a container has never been the
694 * best on the critical path. */
695 LttFacility
* ltt_trace_facility_by_id(LttTrace
* trace
, unsigned id
)
697 LttFacility
* facility
= NULL
;
700 for(i
=0;i
<trace
->facility_number
;i
++){
701 LttFacility
*iter_facility
=
702 (LttFacility
*) g_ptr_array_index(trace
->facilities
,i
);
703 if(likely(id
>= iter_facility
->base_id
&&
704 id
< iter_facility
->base_id
+ iter_facility
->event_number
)) {
705 facility
= iter_facility
;
713 LttEventType
*ltt_trace_eventtype_get(LttTrace
*t
, unsigned evId
)
715 LttEventType
*event_type
;
718 f
= ltt_trace_facility_by_id(t
,evId
);
720 if(unlikely(!f
)) event_type
= NULL
;
721 else event_type
= f
->events
[evId
- f
->base_id
];
726 /*****************************************************************************
727 *There is one "per cpu" tracefile for each CPU, numbered from 0 to
728 *the maximum number of CPU in the system. When the number of CPU installed
729 *is less than the maximum, some positions are unused. There are also a
730 *number of "control" tracefiles (facilities, interrupts...).
731 ****************************************************************************/
732 unsigned ltt_trace_control_tracefile_number(LttTrace
*t
)
734 return t
->control_tracefile_number
;
737 unsigned ltt_trace_per_cpu_tracefile_number(LttTrace
*t
)
739 return t
->per_cpu_tracefile_number
;
742 /*****************************************************************************
743 *It is possible to search for the tracefiles by name or by CPU position.
744 *The index within the tracefiles of the same type is returned if found
745 *and a negative value otherwise.
746 ****************************************************************************/
748 int ltt_trace_control_tracefile_find(LttTrace
*t
, const gchar
*name
)
750 LttTracefile
* tracefile
;
752 for(i
=0;i
<t
->control_tracefile_number
;i
++){
753 tracefile
= (LttTracefile
*)g_ptr_array_index(t
->control_tracefiles
, i
);
754 if(strcmp(tracefile
->name
, name
)==0)break;
756 if(i
== t
->control_tracefile_number
) return -1;
760 /* not really useful. We just have to know that cpu tracefiles
761 * comes before control tracefiles.
763 int ltt_trace_per_cpu_tracefile_find(LttTrace
*t
, const gchar
*name
)
765 LttTracefile
* tracefile
;
767 for(i
=0;i
<t
->per_cpu_tracefile_number
;i
++){
768 tracefile
= (LttTracefile
*)g_ptr_array_index(t
->per_cpu_tracefiles
, i
);
769 if(strcmp(tracefile
->name
, name
)==0)break;
771 if(i
== t
->per_cpu_tracefile_number
) return -1;
775 /*****************************************************************************
776 *Get a specific tracefile
777 ****************************************************************************/
779 LttTracefile
*ltt_trace_control_tracefile_get(LttTrace
*t
, unsigned i
)
781 return (LttTracefile
*)g_ptr_array_index(t
->control_tracefiles
, i
);
784 LttTracefile
*ltt_trace_per_cpu_tracefile_get(LttTrace
*t
, unsigned i
)
786 return (LttTracefile
*)g_ptr_array_index(t
->per_cpu_tracefiles
, i
);
789 /*****************************************************************************
790 * Get the start time and end time of the trace
791 ****************************************************************************/
793 void ltt_trace_time_span_get(LttTrace
*t
, LttTime
*start
, LttTime
*end
)
795 LttTime startSmall
, startTmp
, endBig
, endTmp
;
799 for(i
=0;i
<t
->control_tracefile_number
;i
++){
800 tf
= g_ptr_array_index(t
->control_tracefiles
, i
);
802 startTmp
= tf
->a_block_start
->time
;
803 readBlock(tf
,tf
->block_number
);
804 endTmp
= tf
->a_block_end
->time
;
806 startSmall
= startTmp
;
811 if(ltt_time_compare(startSmall
,startTmp
) > 0) startSmall
= startTmp
;
812 if(ltt_time_compare(endBig
,endTmp
) < 0) endBig
= endTmp
;
815 for(i
=0;i
<t
->per_cpu_tracefile_number
;i
++){
816 tf
= g_ptr_array_index(t
->per_cpu_tracefiles
, i
);
818 startTmp
= tf
->a_block_start
->time
;
819 readBlock(tf
,tf
->block_number
);
820 endTmp
= tf
->a_block_end
->time
;
822 startSmall
= startTmp
;
826 if(ltt_time_compare(startSmall
,startTmp
) > 0) startSmall
= startTmp
;
827 if(ltt_time_compare(endBig
,endTmp
) < 0) endBig
= endTmp
;
830 if(start
!= NULL
) *start
= startSmall
;
831 if(end
!= NULL
) *end
= endBig
;
835 /*****************************************************************************
836 *Get the name of a tracefile
837 ****************************************************************************/
839 char *ltt_tracefile_name(LttTracefile
*tf
)
844 /*****************************************************************************
845 * Get the number of blocks in the tracefile
846 ****************************************************************************/
848 unsigned ltt_tracefile_block_number(LttTracefile
*tf
)
850 return tf
->block_number
;
853 /*****************************************************************************
855 * ltt_tracefile_seek_time: seek to the first event of the trace with time
856 * larger or equal to time
859 * time : criteria of the time
860 ****************************************************************************/
861 void ltt_tracefile_find_time_block(LttTracefile
*t
, LttTime time
,
862 int start_block
, int end_block
)
864 int err
, tmp_block
, s
, e
;
868 err
=readBlock(t
,start_block
);
869 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
870 if(start_block
== end_block
)return;
872 tailTime
= ltt_time_compare(t
->a_block_end
->time
, time
);
873 if(tailTime
>= 0) return;
875 err
=readBlock(t
,end_block
);
876 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
877 if(start_block
+1 == end_block
)return;
879 headTime
= ltt_time_compare(t
->a_block_start
->time
, time
);
880 if(headTime
<= 0 ) return;
882 tmp_block
= (end_block
+ start_block
)/2;
883 err
=readBlock(t
,tmp_block
);
884 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
886 headTime
= ltt_time_compare(t
->a_block_start
->time
, time
);
887 tailTime
= ltt_time_compare(t
->a_block_end
->time
, time
);
888 if(headTime
<= 0 && tailTime
>= 0) return;
894 ltt_tracefile_find_time_block(t
, time
, s
, e
);
902 ltt_tracefile_find_time_block(t
, time
, s
, e
);
907 void ltt_tracefile_backward_find_time_block(LttTracefile
*t
, LttTime time
)
909 int t_time
, h_time
, err
;
910 err
=readBlock(t
,t
->which_block
-1);
911 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
912 h_time
= ltt_time_compare(t
->a_block_start
->time
, time
);
913 t_time
= ltt_time_compare(t
->a_block_end
->time
, time
);
916 if(t
->which_block
== 1) return;
917 err
=readBlock(t
,t
->which_block
-1);
918 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
919 tmp
= ltt_time_compare(t
->a_block_end
->time
, time
);
920 if(tmp
== 0) return ltt_tracefile_seek_time(t
, time
);
921 err
=readBlock(t
,t
->which_block
+1);
922 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
923 }else if(h_time
> 0){
924 ltt_tracefile_find_time_block(t
, time
, 1, t
->which_block
);
925 return ltt_tracefile_seek_time(t
, time
) ;
927 if(t_time
>= 0) return ltt_tracefile_seek_time(t
, time
);
928 err
=readBlock(t
,t
->which_block
+1);
929 if(err
) g_error("Can not read tracefile: %s\n", t
->name
);
933 void ltt_tracefile_seek_time(LttTracefile
*t
, LttTime time
)
937 int headTime
= ltt_time_compare(t
->a_block_start
->time
, time
);
938 int tailTime
= ltt_time_compare(t
->a_block_end
->time
, time
);
941 if(headTime
< 0 && tailTime
> 0){
942 if(ltt_time_compare(t
->a_block_end
->time
, t
->current_event_time
) !=0) {
943 lttTime
= getEventTime(t
);
944 err
= ltt_time_compare(lttTime
, time
);
946 if(t
->which_event
==2 || ltt_time_compare(t
->prev_event_time
,time
)<0){
950 return ltt_tracefile_seek_time(t
, time
);
954 if(ltt_tracefile_read(t
,&ev
) == NULL
) {
955 g_print("End of file\n");
958 lttTime
= getEventTime(t
);
959 err
= ltt_time_compare(lttTime
, time
);
963 }else{//we are at the end of the block
965 return ltt_tracefile_seek_time(t
, time
);
967 }else if(headTime
>= 0){
968 if(t
->which_block
== 1){
971 if(ltt_time_compare(t
->prev_block_end_time
, time
) >= 0 ||
972 (t
->prev_block_end_time
.tv_sec
== 0 &&
973 t
->prev_block_end_time
.tv_nsec
== 0 )){
974 ltt_tracefile_backward_find_time_block(t
, time
);
979 }else if(tailTime
< 0){
980 if(t
->which_block
!= t
->block_number
){
981 ltt_tracefile_find_time_block(t
, time
, t
->which_block
+1, t
->block_number
);
982 return ltt_tracefile_seek_time(t
, time
);
984 t
->cur_event_pos
= t
->buffer
+ t
->block_size
;
985 g_print("End of file\n");
988 }else if(tailTime
== 0){
989 t
->cur_event_pos
= t
->last_event_pos
;
990 t
->current_event_time
= time
;
991 t
->cur_heart_beat_number
= 0;
992 t
->prev_event_time
.tv_sec
= 0;
993 t
->prev_event_time
.tv_nsec
= 0;
998 /*****************************************************************************
999 * Seek to the first event with position equal or larger to ep
1001 * Modified by Mathieu Desnoyers to used faster offset position instead of
1002 * re-reading the whole buffer.
1003 ****************************************************************************/
1005 void ltt_tracefile_seek_position(LttTracefile
*t
, const LttEventPosition
*ep
)
1007 //if we are at the right place, just return
1008 if(likely(t
->which_block
== ep
->block_num
&& t
->which_event
== ep
->event_num
))
1011 if(likely(t
->which_block
== ep
->block_num
)) updateTracefile(t
);
1012 else readBlock(t
,ep
->block_num
);
1013 //event offset is available
1014 if(likely(ep
->old_position
)){
1017 t
->which_event
= ep
->event_num
;
1018 t
->cur_event_pos
= t
->buffer
+ ep
->event_offset
;
1019 t
->prev_event_time
= ep
->event_time
;
1020 t
->current_event_time
= ep
->event_time
;
1021 t
->cur_heart_beat_number
= ep
->heart_beat_number
;
1022 t
->cur_cycle_count
= ep
->event_cycle_count
;
1024 /* This is a workaround for fast position seek */
1025 t
->last_event_pos
= ep
->last_event_pos
;
1026 t
->prev_block_end_time
= ep
->prev_block_end_time
;
1027 t
->prev_event_time
= ep
->prev_event_time
;
1028 t
->pre_cycle_count
= ep
->pre_cycle_count
;
1029 t
->count
= ep
->count
;
1030 t
->overflow_nsec
= ep
->overflow_nsec
;
1031 /* end of workaround */
1033 //update the fields of the current event and go to the next event
1035 if(unlikely(err
== ERANGE
)) g_error("event id is out of range\n");
1040 //only block number and event index are available
1041 //MD: warning : this is slow!
1042 g_warning("using slow O(n) tracefile seek position");
1045 while(likely(t
->which_event
< ep
->event_num
)) ltt_tracefile_read(t
, &event
);
1050 /*****************************************************************************
1052 * ltt_tracefile_read : read the current event, set the pointer to the next
1056 * LttEvent * : an event to be processed
1057 ****************************************************************************/
1059 LttEvent
*ltt_tracefile_read(LttTracefile
*t
, LttEvent
*event
)
1063 if(unlikely(t
->cur_event_pos
== t
->buffer
+ t
->block_size
)){
1064 if(unlikely(t
->which_block
== t
->block_number
)){
1067 err
= readBlock(t
, t
->which_block
+ 1);
1068 if(unlikely(err
))g_error("Can not read tracefile");
1071 event
->event_id
= (int)(*(guint16
*)(t
->cur_event_pos
));
1072 if(unlikely(event
->event_id
== TRACE_TIME_HEARTBEAT
))
1073 t
->cur_heart_beat_number
++;
1075 t
->prev_event_time
= t
->current_event_time
;
1076 // t->current_event_time = getEventTime(t);
1078 event
->time_delta
= *(guint32
*)(t
->cur_event_pos
+ EVENT_ID_SIZE
);
1079 event
->event_time
= t
->current_event_time
;
1080 event
->event_cycle_count
= t
->cur_cycle_count
;
1082 event
->tracefile
= t
;
1083 event
->data
= t
->cur_event_pos
+ EVENT_HEADER_SIZE
;
1084 event
->which_block
= t
->which_block
;
1085 event
->which_event
= t
->which_event
;
1087 /* This is a workaround for fast position seek */
1088 event
->last_event_pos
= t
->last_event_pos
;
1089 event
->prev_block_end_time
= t
->prev_block_end_time
;
1090 event
->prev_event_time
= t
->prev_event_time
;
1091 event
->pre_cycle_count
= t
->pre_cycle_count
;
1092 event
->count
= t
->count
;
1093 event
->overflow_nsec
= t
->overflow_nsec
;
1095 /* end of workaround */
1099 //update the fields of the current event and go to the next event
1101 if(unlikely(err
== ERANGE
)) g_error("event id is out of range\n");
1106 /****************************************************************************
1108 * readFile : wrap function to read from a file
1110 * fd : file descriptor
1111 * buf : buf to contain the content
1112 * size : number of bytes to be read
1113 * mesg : message to be printed if some thing goes wrong
1116 * EIO : can not read from the file
1117 ****************************************************************************/
1119 int readFile(int fd
, void * buf
, size_t size
, char * mesg
)
1121 ssize_t nbBytes
= read(fd
, buf
, size
);
1123 if((size_t)nbBytes
!= size
) {
1125 perror("Error in readFile : ");
1127 g_warning("%s",mesg
);
1134 /*****************************************************************************
1136 * skipEvent_pre_read_cycles : go to the next event,
1137 * update the necessary fields of the current event
1138 * increment the cycle counter, save it at the end.
1143 * ERANGE : event id is out of range
1144 ****************************************************************************/
1146 int skipEvent_pre_read_cycles(LttTracefile
* t
)
1153 evId
= (int)(*(guint16
*)(t
->cur_event_pos
));
1154 evData
= t
->cur_event_pos
+ EVENT_HEADER_SIZE
;
1156 evT
= ltt_trace_eventtype_get(t
->trace
,(unsigned)evId
);
1158 if(likely(evT
)) rootFld
= evT
->root_field
;
1161 if(likely(rootFld
)){
1162 //event has string/sequence or the last event is not the same event
1163 if(likely((evT
->latest_block
!=t
->which_block
|| evT
->latest_event
!=t
->which_event
)
1164 && rootFld
->field_fixed
== 0)){
1165 setFieldsOffset(t
, evT
, evData
, t
->trace
);
1167 t
->cur_event_pos
+= EVENT_HEADER_SIZE
+ rootFld
->field_size
;
1168 }else t
->cur_event_pos
+= EVENT_HEADER_SIZE
;
1170 //evT->latest_block = t->which_block;
1171 //evT->latest_event = t->which_event;
1173 //the next event is in the next block
1174 //if(unlikely(evId == TRACE_BLOCK_END)){
1175 // Specify end of buffer reached.
1176 // t->cur_event_pos = t->buffer + t->block_size;
1178 //g_critical("COUNT : %lu", t->cur_cycle_count);
1180 // t->current_event_time = getEventTime(t);
1189 /*****************************************************************************
1191 * ltt_tracefile_pre_read_cycles :
1192 * read the current event, increment the cycle counter
1196 * False : end of bloc reached
1197 ****************************************************************************/
1199 gboolean
ltt_tracefile_pre_read_cycles(LttTracefile
*tf
)
1204 // if(unlikely(t->cur_event_pos == t->buffer + t->block_size)){
1205 //if(unlikely(t->which_block == t->block_number)){
1208 // return FALSE; // end of bloc reached
1209 //err = readBlock(t, t->which_block + 1);
1210 //if(unlikely(err))g_error("Can not read tracefile");
1213 //event.event_id = (int)(*(guint16 *)(t->cur_event_pos));
1214 //if(unlikely(event.event_id == TRACE_TIME_HEARTBEAT))
1215 // t->cur_heart_beat_number++;
1217 //t->prev_event_time = t->current_event_time;
1218 // t->current_event_time = getEventTime(t);
1220 //event.time_delta = *(guint32 *)(t->cur_event_pos + EVENT_ID_SIZE);
1221 //event.event_time = t->current_event_time;
1222 //event.event_cycle_count = t->cur_cycle_count;
1224 //event.tracefile = t;
1225 //event.data = t->cur_event_pos + EVENT_HEADER_SIZE;
1226 //event.which_block = t->which_block;
1227 //event.which_event = t->which_event;
1229 /* This is a workaround for fast position seek */
1230 //event.last_event_pos = t->last_event_pos;
1231 //event.prev_block_end_time = t->prev_block_end_time;
1232 //event.prev_event_time = t->prev_event_time;
1233 //event.pre_cycle_count = t->pre_cycle_count;
1234 //event.count = t->count;
1235 /* end of workaround */
1238 /* Increment the cycle counter for the bloc */
1240 LttCycleCount cycle_count
; // cycle count for the current event
1241 LttCycleCount lEventTotalCycle
; // Total cycles from start for event
1242 LttCycleCount lEventNSec
; // Total nsecs from start for event
1243 LttTime lTimeOffset
; // Time offset in struct LttTime
1246 evId
= *(guint16
*)tf
->cur_event_pos
;
1248 // Calculate total time in cycles from start of buffer for this event
1249 cycle_count
= (LttCycleCount
)*(guint32
*)(tf
->cur_event_pos
+ EVENT_ID_SIZE
);
1250 //g_debug("event cycle count %llu", cycle_count);
1252 //gint64 delta_count = (gint64)(cycle_count - tf->pre_cycle_count);
1253 //LttCycleCount res_delta_count;
1254 gboolean comp_count
= cycle_count
< tf
->pre_cycle_count
;
1255 tf
->pre_cycle_count
= cycle_count
;
1257 if(unlikely(comp_count
)) {
1259 tf
->count
++; //increment wrap count
1262 //if(unlikely(cycle_count < tf->pre_cycle_count)) tf->count++;
1263 //if(unlikely(delta_count < 0)) {
1264 // tf->count++; //increment wrap count
1265 // keep in mind that delta_count is negative here.
1266 // res_delta_count = delta_count + 0x100000000ULL ;
1268 // res_delta_count = (LttCycleCount)delta_count;
1270 //cycle_count += (LttCycleCount)tf->count << 32;
1273 // if(tf->cur_heart_beat_number > tf->count)
1274 // cycle_count += (tf->cur_heart_beat_number - tf->count) << 32;
1276 //tf->cur_cycle_count = tf->cur_cycle_count + res_delta_count;
1277 tf
->cur_cycle_count
= cycle_count
| ((LttCycleCount
)tf
->count
<< 32);
1278 //g_debug("cur cycle count %llu", tf->cur_cycle_count);
1283 if(unlikely(evId
== TRACE_BLOCK_START
)){
1284 //g_debug("BLOCK START");
1285 }else if(unlikely(evId
== TRACE_BLOCK_END
)){
1286 //g_debug("BLOCK END");
1288 /* The goal of all this pre reading */
1289 tf
->a_block_end
->cycle_count
= tf
->cur_cycle_count
;
1290 //g_debug("end of block cycle count : %llu", tf->cur_cycle_count);
1295 //update the fields of the current event and go to the next event
1296 err
= skipEvent_pre_read_cycles(tf
);
1297 if(unlikely(err
== ERANGE
)) g_error("event id is out of range\n");
1303 /****************************************************************************
1305 * readBlock : read a block from the file
1307 * lttdes : ltt trace file
1308 * whichBlock : the block which will be read
1311 * EINVAL : lseek fail
1312 * EIO : can not read from the file
1313 ****************************************************************************/
1315 int readBlock(LttTracefile
* tf
, int whichBlock
)
1320 /* same block already opened requested */
1321 if((guint
)whichBlock
== tf
->which_block
) return 0;
1323 if(likely(whichBlock
- tf
->which_block
== 1 && tf
->which_block
!= 0)){
1324 tf
->prev_block_end_time
= tf
->a_block_end
->time
;
1325 tf
->prev_event_time
= tf
->a_block_end
->time
;
1327 tf
->prev_block_end_time
.tv_sec
= 0;
1328 tf
->prev_block_end_time
.tv_nsec
= 0;
1329 tf
->prev_event_time
.tv_sec
= 0;
1330 tf
->prev_event_time
.tv_nsec
= 0;
1333 nbBytes
=lseek(tf
->fd
,(off_t
)((whichBlock
-1)*tf
->block_size
), SEEK_SET
);
1334 if(unlikely(nbBytes
== -1)) return EINVAL
;
1336 if(unlikely(readFile(tf
->fd
,tf
->buffer
,tf
->block_size
,"Unable to read a block")))
1339 tf
->a_block_start
=(BlockStart
*) (tf
->buffer
+ EVENT_HEADER_SIZE
);
1340 lostSize
= *(guint32
*)(tf
->buffer
+ tf
->block_size
- sizeof(guint32
));
1341 tf
->a_block_end
=(BlockEnd
*)(tf
->buffer
+ tf
->block_size
-
1342 lostSize
+ EVENT_HEADER_SIZE
);
1343 tf
->last_event_pos
= tf
->buffer
+ tf
->block_size
- lostSize
;
1345 tf
->which_block
= whichBlock
;
1346 tf
->which_event
= 1;
1347 tf
->cur_event_pos
= tf
->buffer
;//the beginning of the block, block start ev
1348 tf
->cur_heart_beat_number
= 0;
1350 /* read the whole block to precalculate total of cycles in it */
1352 tf
->pre_cycle_count
= 0;
1353 tf
->cur_cycle_count
= 0;
1354 //g_debug("precalculating cycles begin for block %i", whichBlock);
1355 while(likely(ltt_tracefile_pre_read_cycles(tf
)));
1356 /* Rough approximation of cycles per usec to calculate
1357 * the real block start and end time.
1359 getCyclePerNsec(tf
);
1360 /* we are at end position, make end time more precise */
1361 /* Start overflow_nsec to a negative value : takes account of the
1362 * start of block cycle counter */
1363 tf
->overflow_nsec
= (-((double)tf
->a_block_start
->cycle_count
)
1364 * tf
->nsec_per_cycle
);
1365 /* put back the numbers corresponding to end time */
1366 tf
->overflow_nsec
+= tf
->one_overflow_nsec
* tf
->count
;
1368 tf
->a_block_end
->time
= getEventTime(tf
);
1370 //g_debug("precalculating cycles end for block %i", whichBlock);
1372 /* put back pointer at the beginning */
1374 tf
->pre_cycle_count
= 0;
1375 tf
->cur_cycle_count
= 0;
1376 tf
->which_event
= 1;
1377 tf
->cur_event_pos
= tf
->buffer
;//the beginning of the block, block start ev
1378 tf
->cur_heart_beat_number
= 0;
1380 /* Make start time more precise */
1381 /* Start overflow_nsec to a negative value : takes account of the
1382 * start of block cycle counter */
1383 tf
->overflow_nsec
= (-((double)tf
->a_block_start
->cycle_count
)
1384 * tf
->nsec_per_cycle
);
1387 tf
->a_block_start
->time
= getEventTime(tf
);
1389 /* recalculate the cycles per nsec, with now more precise start and end time
1391 getCyclePerNsec(tf
);
1392 tf
->overflow_nsec
= (-((double)tf
->a_block_start
->cycle_count
)
1393 * tf
->nsec_per_cycle
);
1397 tf
->current_event_time
= getEventTime(tf
);
1402 /*****************************************************************************
1404 * updateTracefile : reinitialize the info of the block which is already
1408 ****************************************************************************/
1410 void updateTracefile(LttTracefile
* tf
)
1412 tf
->which_event
= 1;
1413 tf
->cur_event_pos
= tf
->buffer
;
1414 tf
->current_event_time
= getEventTime(tf
);
1415 tf
->cur_heart_beat_number
= 0;
1417 tf
->prev_event_time
.tv_sec
= 0;
1418 tf
->prev_event_time
.tv_nsec
= 0;
1421 tf
->overflow_nsec
= (-((double)tf
->a_block_start
->cycle_count
)
1422 * tf
->nsec_per_cycle
);
1426 /*****************************************************************************
1428 * skipEvent : go to the next event, update the fields of the current event
1433 * ERANGE : event id is out of range
1434 ****************************************************************************/
1436 int skipEvent(LttTracefile
* t
)
1443 evId
= (int)(*(guint16
*)(t
->cur_event_pos
));
1444 evData
= t
->cur_event_pos
+ EVENT_HEADER_SIZE
;
1446 evT
= ltt_trace_eventtype_get(t
->trace
,(unsigned)evId
);
1448 if(likely(evT
)) rootFld
= evT
->root_field
;
1451 if(likely(rootFld
)){
1452 //event has string/sequence or the last event is not the same event
1453 if(likely((evT
->latest_block
!=t
->which_block
|| evT
->latest_event
!=t
->which_event
)
1454 && rootFld
->field_fixed
== 0)){
1455 setFieldsOffset(t
, evT
, evData
, t
->trace
);
1457 t
->cur_event_pos
+= EVENT_HEADER_SIZE
+ rootFld
->field_size
;
1458 }else t
->cur_event_pos
+= EVENT_HEADER_SIZE
;
1460 evT
->latest_block
= t
->which_block
;
1461 evT
->latest_event
= t
->which_event
;
1463 //the next event is in the next block
1464 if(unlikely(evId
== TRACE_BLOCK_END
)){
1465 t
->cur_event_pos
= t
->buffer
+ t
->block_size
;
1468 t
->current_event_time
= getEventTime(t
);
1475 /*****************************************************************************
1477 * getCyclePerNsec : calculate cycles per nsec for current block
1478 * MD: should have tracefile_read the whole block, so we know the
1479 * total of cycles in it before being called.
1482 ****************************************************************************/
1484 void getCyclePerNsec(LttTracefile
* t
)
1486 LttTime lBufTotalTime
; /* Total time for this buffer */
1487 double lBufTotalNSec
; /* Total time for this buffer in nsecs */
1488 double lBufTotalCycle
;/* Total cycles for this buffer */
1490 /* Calculate the total time for this buffer */
1491 lBufTotalTime
= ltt_time_sub(t
->a_block_end
->time
, t
->a_block_start
->time
);
1493 /* Calculate the total cycles for this bufffer */
1494 lBufTotalCycle
= t
->a_block_end
->cycle_count
;
1495 lBufTotalCycle
-= t
->a_block_start
->cycle_count
;
1497 /* Convert the total time to nsecs */
1498 lBufTotalNSec
= ltt_time_to_double(lBufTotalTime
);
1500 t
->nsec_per_cycle
= (double)lBufTotalNSec
/ (double)lBufTotalCycle
;
1501 /* Pre-multiply one overflow (2^32 cycles) by nsec_per_cycle */
1502 t
->one_overflow_nsec
= t
->nsec_per_cycle
* (double)0x100000000ULL
;
1504 /* See : http://www.azillionmonkeys.com/qed/adiv.html */
1505 // precalculate the reciprocal, so divisions will be really fast.
1506 // 2^32-1 == 0xFFFFFFFFULL
1508 // double int_res = lBufTotalCycle/lBufTotalNSec;
1509 // t->cycles_per_nsec_reciprocal =
1510 // ((0xFFFF+int_res)/int_res);
1515 /****************************************************************************
1517 * getEventTime : obtain the time of an event
1518 * NOTE : this function _really_ is on critical path.
1522 * LttTime : the time of the event
1523 ****************************************************************************/
1525 static inline LttTime
getEventTime(LttTracefile
* tf
)
1528 LttCycleCount cycle_count
; // cycle count for the current event
1529 //LttCycleCount lEventTotalCycle; // Total cycles from start for event
1530 gint64 lEventNSec
; // Total nsecs from start for event
1531 LttTime lTimeOffset
; // Time offset in struct LttTime
1534 evId
= *(guint16
*)tf
->cur_event_pos
;
1535 //if(unlikely(evId == TRACE_BLOCK_START)){
1537 // tf->pre_cycle_count = 0;
1538 // tf->cur_cycle_count = tf->a_block_start->cycle_count;
1539 // return tf->a_block_start->time;
1540 //}//else if(unlikely(evId == TRACE_BLOCK_END)){
1542 //tf->pre_cycle_count = 0;
1543 //tf->cur_cycle_count = tf->a_block_end->cycle_count;
1544 //return tf->a_block_end->time;
1547 // Calculate total time in cycles from start of buffer for this event
1548 cycle_count
= (LttCycleCount
)*(guint32
*)(tf
->cur_event_pos
+ EVENT_ID_SIZE
);
1549 //g_debug("event cycle count %llu", cycle_count);
1551 //gint64 delta_count = (gint64)(cycle_count - tf->pre_cycle_count);
1552 //LttCycleCount res_delta_count;
1553 gboolean comp_count
= cycle_count
< tf
->pre_cycle_count
;
1554 tf
->pre_cycle_count
= cycle_count
;
1556 if(unlikely(comp_count
)) {
1558 tf
->overflow_nsec
+= tf
->one_overflow_nsec
;
1559 tf
->count
++; //increment overflow count
1562 //if(unlikely(cycle_count < tf->pre_cycle_count)) tf->count++;
1563 //if(unlikely(delta_count < 0)) {
1564 // tf->count++; //increment wrap count
1565 // keep in mind that delta_count is negative here.
1566 // res_delta_count = delta_count + 0x100000000ULL ;
1568 // res_delta_count = (LttCycleCount)delta_count;
1570 //cycle_count += (LttCycleCount)tf->count << 32;
1573 // if(tf->cur_heart_beat_number > tf->count)
1574 // cycle_count += (tf->cur_heart_beat_number - tf->count) << 32;
1576 //tf->cur_cycle_count = tf->cur_cycle_count + res_delta_count;
1579 // Total cycle counter of the event.
1580 //tf->cur_cycle_count = cycle_count | ((LttCycleCount)tf->count << 32);
1582 //g_debug("cur cycle count %llu", tf->cur_cycle_count);
1584 // Total number of cycles since the beginning of the block
1585 //lEventTotalCycle = tf->cur_cycle_count
1586 // - tf->a_block_start->cycle_count;
1591 // Calculate total time in cycles from start of buffer for this event
1592 cycle_count
= (LttCycleCount
)*(guint32
*)(tf
->cur_event_pos
+ EVENT_ID_SIZE
);
1594 if(unlikely(cycle_count
< tf
->pre_cycle_count
)) tf
->count
++;
1595 tf
->pre_cycle_count
= cycle_count
;
1596 cycle_count
+= (LttCycleCount
)tf
->count
<< 32;
1599 // if(tf->cur_heart_beat_number > tf->count)
1600 // cycle_count += (tf->cur_heart_beat_number - tf->count) << 32;
1602 tf
->cur_cycle_count
= cycle_count
;
1604 lEventTotalCycle
= cycle_count
;
1605 lEventTotalCycle
-= tf
->a_block_start
->cycle_count
;
1607 // Convert it to nsecs
1608 //lEventNSec = (double)lEventTotalCycle * (double)tf->nsec_per_cycle;
1609 //lEventNSec = (tf->cycles_per_nsec_reciprocal * lEventTotalCycle) >> 16;
1611 // Determine offset in struct LttTime
1612 //lTimeOffset = ltt_time_from_double(lEventNSec);
1614 // We do not substract block start cycle count here, it has already been done
1615 // on the overflow_nsec
1616 // The result should never be negative, because the cycle count of
1617 // the event following the block start should be >= the previous one.
1618 lEventNSec
= (gint64
)((double)cycle_count
* tf
->nsec_per_cycle
)
1620 //g_assert(lEventNSec >= 0);
1621 lTimeOffset
= ltt_time_from_uint64(lEventNSec
);
1623 time
= ltt_time_add(tf
->a_block_start
->time
, lTimeOffset
);
1628 /*****************************************************************************
1630 * setFieldsOffset : set offset of the fields
1632 * tracefile : opened trace file
1633 * evT : the event type
1634 * evD : event data, it may be NULL
1635 ****************************************************************************/
1637 void setFieldsOffset(LttTracefile
*tf
,LttEventType
*evT
,void *evD
,LttTrace
* t
)
1639 LttField
* rootFld
= evT
->root_field
;
1640 // rootFld->base_address = evD;
1643 rootFld
->field_size
= getFieldtypeSize(tf
, evT
, 0,0,rootFld
, evD
,t
);
1646 /*****************************************************************************
1648 * getFieldtypeSize: get the size of the field type (primitive type)
1650 * tracefile : opened trace file
1652 * offsetRoot : offset from the root
1653 * offsetParent : offset from the parrent
1655 * evD : event data, it may be NULL
1657 * int : size of the field
1658 ****************************************************************************/
1660 static inline gint
getFieldtypeSize(LttTracefile
* t
,
1661 LttEventType
* evT
, gint offsetRoot
,
1662 gint offsetParent
, LttField
* fld
, void *evD
, LttTrace
*trace
)
1664 gint size
, size1
, element_number
, i
, offset1
, offset2
;
1665 LttType
* type
= fld
->field_type
;
1667 if(unlikely(t
&& evT
->latest_block
==t
->which_block
&&
1668 evT
->latest_event
==t
->which_event
)){
1669 size
= fld
->field_size
;
1670 goto end_getFieldtypeSize
;
1673 /* This likely has been tested with gcov : half of them.. */
1674 if(unlikely(fld
->field_fixed
== 1)){
1676 if(unlikely(fld
== evT
->root_field
)) {
1677 size
= fld
->field_size
;
1678 goto end_getFieldtypeSize
;
1682 /* From gcov profiling : half string, half struct, can we gain something from
1683 * that ? (Mathieu) */
1684 switch(type
->type_class
) {
1686 element_number
= (int) type
->element_number
;
1687 if(fld
->field_fixed
== -1){
1688 size
= getFieldtypeSize(t
, evT
, offsetRoot
,
1689 0,fld
->child
[0], NULL
, trace
);
1690 if(size
== 0){ //has string or sequence
1691 fld
->field_fixed
= 0;
1693 fld
->field_fixed
= 1;
1694 size
*= element_number
;
1696 }else if(fld
->field_fixed
== 0){// has string or sequence
1698 for(i
=0;i
<element_number
;i
++){
1699 size
+= getFieldtypeSize(t
, evT
, offsetRoot
+size
,size
,
1700 fld
->child
[0], evD
+size
, trace
);
1702 }else size
= fld
->field_size
;
1706 size1
= (int) ltt_type_size(trace
, type
);
1707 if(fld
->field_fixed
== -1){
1708 fld
->sequ_number_size
= size1
;
1709 fld
->field_fixed
= 0;
1710 size
= getFieldtypeSize(t
, evT
, offsetRoot
,
1711 0,fld
->child
[0], NULL
, trace
);
1712 fld
->element_size
= size
;
1714 element_number
= getIntNumber(size1
,evD
);
1715 type
->element_number
= element_number
;
1716 if(fld
->element_size
> 0){
1717 size
= element_number
* fld
->element_size
;
1718 }else{//sequence has string or sequence
1720 for(i
=0;i
<element_number
;i
++){
1721 size
+= getFieldtypeSize(t
, evT
, offsetRoot
+size
+size1
,size
+size1
,
1722 fld
->child
[0], evD
+size
+size1
, trace
);
1731 if(fld
->field_fixed
== -1){
1732 fld
->field_fixed
= 0;
1734 /* Hope my implementation is faster than strlen (Mathieu) */
1735 char *ptr
=(char*)evD
;
1737 /* from gcov : many many strings are empty, make it the common case. */
1738 while(unlikely(*ptr
!= '\0')) { size
++; ptr
++; }
1739 //size = ptr - (char*)evD + 1; //include end : '\0'
1744 element_number
= (int) type
->element_number
;
1746 /* tested with gcov */
1747 if(unlikely(fld
->field_fixed
== -1)){
1748 offset1
= offsetRoot
;
1750 for(i
=0;i
<element_number
;i
++){
1751 size1
=getFieldtypeSize(t
, evT
,offset1
,offset2
,
1752 fld
->child
[i
], NULL
, trace
);
1753 if(likely(size1
> 0 && size
>= 0)){
1755 if(likely(offset1
>= 0)) offset1
+= size1
;
1763 if(unlikely(size
== -1)){
1764 fld
->field_fixed
= 0;
1766 }else fld
->field_fixed
= 1;
1767 }else if(likely(fld
->field_fixed
== 0)){
1768 offset1
= offsetRoot
;
1770 for(i
=0;i
<element_number
;i
++){
1771 size
=getFieldtypeSize(t
,evT
,offset1
,offset2
,
1772 fld
->child
[i
],evD
+offset2
, trace
);
1777 }else size
= fld
->field_size
;
1781 if(unlikely(fld
->field_fixed
== -1)){
1782 size
= (int) ltt_type_size(trace
, type
);
1783 fld
->field_fixed
= 1;
1784 }else size
= fld
->field_size
;
1788 fld
->offset_root
= offsetRoot
;
1789 fld
->offset_parent
= offsetParent
;
1791 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
1792 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
1794 fld
->field_size
= size
;
1796 end_getFieldtypeSize
:
1802 /*****************************************************************************
1804 * getIntNumber : get an integer number
1806 * size : the size of the integer
1807 * evD : the event data
1809 * gint64 : a 64 bits integer
1810 ****************************************************************************/
1812 gint64
getIntNumber(int size
, void *evD
)
1817 case 1: i
= *(gint8
*)evD
; break;
1818 case 2: i
= *(gint16
*)evD
; break;
1819 case 4: i
= *(gint32
*)evD
; break;
1820 case 8: i
= *(gint64
*)evD
; break;
1821 default: i
= *(gint64
*)evD
;
1822 g_critical("getIntNumber : integer size %d unknown", size
);
1827 if(size
== 1) i
= *(gint8
*)evD
;
1828 else if(size
== 2) i
= *(gint16
*)evD
;
1829 else if(size
== 4) i
= *(gint32
*)evD
;
1830 else if(size
== 8) i
= *(gint64
*)evD
;
1836 /*****************************************************************************
1838 * getDataEndianType : get the data type size and endian type of the local
1841 * size : size of data type
1842 * endian : endian type, little or big
1843 ****************************************************************************/
1845 void getDataEndianType(LttArchSize
* size
, LttArchEndian
* endian
)
1849 int sizeInt
=sizeof(int), sizeLong
=sizeof(long), sizePointer
=sizeof(void *);
1851 if(c
== 1) *endian
= LTT_LITTLE_ENDIAN
;
1852 else *endian
= LTT_BIG_ENDIAN
;
1854 if(sizeInt
== 2 && sizeLong
== 4 && sizePointer
== 4)
1856 else if(sizeInt
== 4 && sizeLong
== 4 && sizePointer
== 4)
1858 else if(sizeInt
== 4 && sizeLong
== 8 && sizePointer
== 8)
1860 else if(sizeInt
== 8 && sizeLong
== 8 && sizePointer
== 8)
1862 else *size
= LTT_UNKNOWN
;
1865 /* get the node name of the system */
1867 char * ltt_trace_system_description_node_name (LttSystemDescription
* s
)
1869 return s
->node_name
;
1873 /* get the domain name of the system */
1875 char * ltt_trace_system_description_domain_name (LttSystemDescription
* s
)
1877 return s
->domain_name
;
1881 /* get the description of the system */
1883 char * ltt_trace_system_description_description (LttSystemDescription
* s
)
1885 return s
->description
;
1889 /* get the start time of the trace */
1891 LttTime
ltt_trace_system_description_trace_start_time(LttSystemDescription
*s
)
1893 return s
->trace_start
;
1897 LttTracefile
*ltt_tracefile_new()
1899 return g_new(LttTracefile
, 1);
1902 void ltt_tracefile_destroy(LttTracefile
*tf
)
1907 void ltt_tracefile_copy(LttTracefile
*dest
, const LttTracefile
*src
)