1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2005 Mathieu Desnoyers
4 * Complete rewrite from the original version made by XangXiu Yang.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License Version 2 as
8 * published by the Free Software Foundation;
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 #include <sys/types.h>
45 #include "ltt-private.h"
46 #include <ltt/trace.h>
47 #include <ltt/facility.h>
48 #include <ltt/event.h>
50 #include <ltt/ltt-types.h>
53 /* Facility names used in this file */
55 GQuark LTT_FACILITY_NAME_HEARTBEAT
,
56 LTT_EVENT_NAME_HEARTBEAT
;
57 GQuark LTT_TRACEFILE_NAME_FACILITIES
;
64 #define __UNUSED__ __attribute__((__unused__))
66 #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format)
69 #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format)
74 /* obtain the time of an event */
76 static inline LttTime
getEventTime(LttTracefile
* tf
);
79 /* set the offset of the fields belonging to the event,
80 need the information of the archecture */
81 void set_fields_offsets(LttTracefile
*tf
, LttEventType
*event_type
);
82 //size_t get_fields_offsets(LttTracefile *tf, LttEventType *event_type, void *data);
84 /* get the size of the field type according to
85 * The facility size information. */
86 static inline void preset_field_type_size(LttTracefile
*tf
,
87 LttEventType
*event_type
,
88 off_t offset_root
, off_t offset_parent
,
89 enum field_status
*fixed_root
, enum field_status
*fixed_parent
,
92 /* map a fixed size or a block information from the file (fd) */
93 static gint
map_block(LttTracefile
* tf
, guint block_num
);
95 /* calculate nsec per cycles for current block */
96 static double calc_nsecs_per_cycle(LttTracefile
* t
);
98 /* go to the next event */
99 static int ltt_seek_next_event(LttTracefile
*tf
);
101 void ltt_update_event_size(LttTracefile
*tf
);
104 /* Functions to parse system.xml file (using glib xml parser) */
105 static void parser_start_element (GMarkupParseContext __UNUSED__
*context
,
106 const gchar
*element_name
,
107 const gchar
**attribute_names
,
108 const gchar
**attribute_values
,
113 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
114 if(strcmp("system", element_name
)){
115 *error
= g_error_new(G_MARKUP_ERROR
,
117 "This is not system.xml file");
121 while(attribute_names
[i
]){
122 if(strcmp("node_name", attribute_names
[i
])==0){
123 des
->node_name
= g_strdup(attribute_values
[i
]);
124 }else if(strcmp("domainname", attribute_names
[i
])==0){
125 des
->domain_name
= g_strdup(attribute_values
[i
]);
126 }else if(strcmp("cpu", attribute_names
[i
])==0){
127 des
->nb_cpu
= atoi(attribute_values
[i
]);
128 }else if(strcmp("arch_size", attribute_names
[i
])==0){
129 if(strcmp(attribute_values
[i
],"LP32") == 0) des
->size
= LTT_LP32
;
130 else if(strcmp(attribute_values
[i
],"ILP32") == 0) des
->size
= LTT_ILP32
;
131 else if(strcmp(attribute_values
[i
],"LP64") == 0) des
->size
= LTT_LP64
;
132 else if(strcmp(attribute_values
[i
],"ILP64") == 0) des
->size
= LTT_ILP64
;
133 else if(strcmp(attribute_values
[i
],"UNKNOWN") == 0) des
->size
= LTT_UNKNOWN
;
134 }else if(strcmp("endian", attribute_names
[i
])==0){
135 if(strcmp(attribute_values
[i
],"LITTLE_ENDIAN") == 0)
136 des
->endian
= LTT_LITTLE_ENDIAN
;
137 else if(strcmp(attribute_values
[i
],"BIG_ENDIAN") == 0)
138 des
->endian
= LTT_BIG_ENDIAN
;
139 }else if(strcmp("kernel_name", attribute_names
[i
])==0){
140 des
->kernel_name
= g_strdup(attribute_values
[i
]);
141 }else if(strcmp("kernel_release", attribute_names
[i
])==0){
142 des
->kernel_release
= g_strdup(attribute_values
[i
]);
143 }else if(strcmp("kernel_version", attribute_names
[i
])==0){
144 des
->kernel_version
= g_strdup(attribute_values
[i
]);
145 }else if(strcmp("machine", attribute_names
[i
])==0){
146 des
->machine
= g_strdup(attribute_values
[i
]);
147 }else if(strcmp("processor", attribute_names
[i
])==0){
148 des
->processor
= g_strdup(attribute_values
[i
]);
149 }else if(strcmp("hardware_platform", attribute_names
[i
])==0){
150 des
->hardware_platform
= g_strdup(attribute_values
[i
]);
151 }else if(strcmp("operating_system", attribute_names
[i
])==0){
152 des
->operating_system
= g_strdup(attribute_values
[i
]);
153 }else if(strcmp("ltt_major_version", attribute_names
[i
])==0){
154 des
->ltt_major_version
= atoi(attribute_values
[i
]);
155 }else if(strcmp("ltt_minor_version", attribute_names
[i
])==0){
156 des
->ltt_minor_version
= atoi(attribute_values
[i
]);
157 }else if(strcmp("ltt_block_size", attribute_names
[i
])==0){
158 des
->ltt_block_size
= atoi(attribute_values
[i
]);
160 *error
= g_error_new(G_MARKUP_ERROR
,
162 "Not a valid attribute");
169 static void parser_characters (GMarkupParseContext __UNUSED__
*context
,
171 gsize __UNUSED__ text_len
,
173 GError __UNUSED__
**error
)
175 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
176 des
->description
= g_strdup(text
);
179 LttFacility
*ltt_trace_get_facility_by_num(LttTrace
*t
,
182 g_assert(num
< t
->facilities_by_num
->len
);
184 return &g_array_index(t
->facilities_by_num
, LttFacility
, num
);
189 /*****************************************************************************
191 * ltt_tracefile_open : open a trace file, construct a LttTracefile
193 * t : the trace containing the tracefile
194 * fileName : path name of the trace file
195 * tf : the tracefile structure
197 * : 0 for success, -1 otherwise.
198 ****************************************************************************/
200 gint
ltt_tracefile_open(LttTrace
*t
, gchar
* fileName
, LttTracefile
*tf
)
202 struct stat lTDFStat
; /* Trace data file status */
203 struct ltt_block_start_header
*header
;
206 tf
->name
= g_quark_from_string(fileName
);
208 tf
->fd
= open(fileName
, O_RDONLY
);
210 g_warning("Unable to open input data file %s\n", fileName
);
214 // Get the file's status
215 if(fstat(tf
->fd
, &lTDFStat
) < 0){
216 g_warning("Unable to get the status of the input data file %s\n", fileName
);
220 // Is the file large enough to contain a trace
221 if(lTDFStat
.st_size
< (off_t
)(sizeof(struct ltt_block_start_header
))){
222 g_print("The input data file %s does not contain a trace\n", fileName
);
226 /* Temporarily map the buffer start header to get trace information */
227 /* Multiple of pages aligned head */
228 tf
->buffer
.head
= mmap(0, sizeof(struct ltt_block_start_header
), PROT_READ
,
229 MAP_PRIVATE
, tf
->fd
, 0);
230 if(tf
->buffer
.head
== MAP_FAILED
) {
231 perror("Error in allocating memory for buffer of tracefile");
234 g_assert( ( (guint
)tf
->buffer
.head
&(8-1) ) == 0); // make sure it's aligned.
236 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
238 if(header
->trace
.magic_number
== LTT_MAGIC_NUMBER
)
240 else if(header
->trace
.magic_number
== LTT_REV_MAGIC_NUMBER
)
242 else /* invalid magic number, bad tracefile ! */
245 //store the size of the file
246 tf
->file_size
= lTDFStat
.st_size
;
247 tf
->block_size
= header
->buf_size
;
248 tf
->num_blocks
= tf
->file_size
/ tf
->block_size
;
250 munmap(tf
->buffer
.head
, sizeof(struct ltt_block_start_header
));
251 tf
->buffer
.head
= NULL
;
253 //read the first block
254 if(map_block(tf
,0)) {
255 perror("Cannot map block for tracefile");
263 munmap(tf
->buffer
.head
, sizeof(struct ltt_block_start_header
));
271 /*****************************************************************************
272 *Open control and per cpu tracefiles
273 ****************************************************************************/
275 void ltt_tracefile_open_cpu(LttTrace
*t
, gchar
* tracefile_name
)
278 tf
= ltt_tracefile_open(t
,tracefile_name
);
280 t
->per_cpu_tracefile_number
++;
281 g_ptr_array_add(t
->per_cpu_tracefiles
, tf
);
284 gint
ltt_tracefile_open_control(LttTrace
*t
, gchar
* control_name
)
293 tf
= ltt_tracefile_open(t
,control_name
);
295 g_warning("ltt_tracefile_open_control : bad file descriptor");
298 t
->control_tracefile_number
++;
299 g_ptr_array_add(t
->control_tracefiles
,tf
);
301 //parse facilities tracefile to get base_id
302 if(strcmp(&control_name
[strlen(control_name
)-10],"facilities") ==0){
304 if(!ltt_tracefile_read(tf
,&ev
)) return 0; // end of file
306 if(ev
.event_id
== TRACE_FACILITY_LOAD
){
308 fLoad
.name
= (gchar
*)pos
;
309 fLoad
.checksum
= *(LttChecksum
*)(pos
+ strlen(fLoad
.name
));
310 fLoad
.base_code
= *(guint32
*)(pos
+ strlen(fLoad
.name
) + sizeof(LttChecksum
));
312 for(i
=0;i
<t
->facility_number
;i
++){
313 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
314 if(strcmp(f
->name
,fLoad
.name
)==0 && fLoad
.checksum
==f
->checksum
){
315 f
->base_id
= fLoad
.base_code
;
319 if(i
==t
->facility_number
) {
320 g_warning("Facility: %s, checksum: %u is not found",
321 fLoad
.name
,(unsigned int)fLoad
.checksum
);
324 }else if(ev
.event_id
== TRACE_BLOCK_START
){
326 }else if(ev
.event_id
== TRACE_BLOCK_END
){
329 g_warning("Not valid facilities trace file");
338 /*****************************************************************************
340 * ltt_tracefile_close: close a trace file,
342 * t : tracefile which will be closed
343 ****************************************************************************/
345 void ltt_tracefile_close(LttTracefile
*t
)
347 if(t
->buffer
.head
!= NULL
)
348 munmap(t
->buffer
.head
, t
->buf_size
);
353 /*****************************************************************************
354 *Get system information
355 ****************************************************************************/
357 gint
getSystemInfo(LttSystemDescription
* des
, gchar
* pathname
)
364 GMarkupParseContext
* context
;
365 GError
* error
= NULL
;
366 GMarkupParser markup_parser
=
368 parser_start_element
,
371 NULL
, /* passthrough */
375 fd
= g_open(pathname
, O_RDONLY
, 0);
377 g_warning("Can not open file : %s\n", pathname
);
381 iochan
= g_io_channel_unix_new(fd
);
383 context
= g_markup_parse_context_new(&markup_parser
, 0, des
,NULL
);
385 //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){
386 while(g_io_channel_read_line(iochan
, &buf
, &length
, NULL
, &error
)
387 != G_IO_STATUS_EOF
) {
390 g_warning("Can not read xml file: \n%s\n", error
->message
);
393 if(!g_markup_parse_context_parse(context
, buf
, length
, &error
)){
395 g_warning("Can not parse xml file: \n%s\n", error
->message
);
398 g_markup_parse_context_free(context
);
400 g_io_channel_shutdown(iochan
, FALSE
, &error
); /* No flush */
402 g_warning("Can not close file: \n%s\n", error
->message
);
410 g_markup_parse_context_free(context
);
412 g_io_channel_shutdown(iochan
, FALSE
, &error
); /* No flush */
414 g_warning("Can not close file: \n%s\n", error
->message
);
425 /*****************************************************************************
426 *The following functions get facility/tracefile information
427 ****************************************************************************/
429 gint
getFacilityInfo(LttTrace
*t
, gchar
* eventdefs
)
436 gchar fullname
[DIR_NAME_SIZE
];
437 GError
* error
= NULL
;
439 dir
= g_dir_open(eventdefs
, 0, &error
);
442 g_warning("Can not open directory: %s, %s\n", eventdefs
, error
->message
);
447 while((name
= g_dir_read_name(dir
)) != NULL
){
448 if(!g_pattern_match_simple("*.xml", name
)) continue;
449 strcpy(fullname
,eventdefs
);
450 strcat(fullname
,name
);
451 ltt_facility_open(t
,fullname
);
455 for(j
=0;j
<t
->facility_number
;j
++){
456 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, j
);
457 for(i
=0; i
<f
->event_number
; i
++){
459 setFieldsOffset(NULL
, et
, NULL
, t
);
466 /*****************************************************************************
467 *A trace is specified as a pathname to the directory containing all the
468 *associated data (control tracefiles, per cpu tracefiles, event
471 *When a trace is closed, all the associated facilities, types and fields
472 *are released as well.
476 /****************************************************************************
477 * get_absolute_pathname
479 * return the unique pathname in the system
481 * MD : Fixed this function so it uses realpath, dealing well with
482 * forgotten cases (.. were not used correctly before).
484 ****************************************************************************/
485 void get_absolute_pathname(const gchar
*pathname
, gchar
* abs_pathname
)
487 abs_pathname
[0] = '\0';
489 if ( realpath (pathname
, abs_pathname
) != NULL
)
493 /* error, return the original path unmodified */
494 strcpy(abs_pathname
, pathname
);
500 /* Search for something like : .*_.*
502 * The left side is the name, the right side is the number.
505 int get_tracefile_name_number(const gchar
*raw_name
,
509 guint raw_name_len
= strlen(raw_name
);
510 gchar char_name
[PATH_MAX
];
517 for(i
=raw_name_len
-1;i
>=0;i
--) {
518 if(raw_name
[i
] == '_') break;
520 if(i
==0) /* Either not found or name length is 0 */
524 cpu_num
= strtol(raw_name
+underscore_pos
+1, &endptr
, 10);
526 if(endptr
== raw_name
+underscore_pos
+1)
527 return -1; /* No digit */
528 if(cpu_num
== LONG_MIN
|| cpu_num
== LONG_MAX
)
529 return -1; /* underflow / overflow */
531 strncpy(char_name
, raw_name
, underscore_pos
);
533 *name
= g_quark_from_string(char_name
);
540 GData
**ltt_trace_get_tracefiles_groups(LttTrace
*trace
)
542 return &trace
->tracefiles
;
546 void compute_tracefile_group(GQuark key_id
,
548 struct compute_tracefile_group_args
*args
)
553 for(i
=0; i
<group
->len
; i
++) {
554 tf
= &g_array_index (group
, LttTracefile
, i
);
556 args
->func(tf
, args
->func_args
);
561 void ltt_tracefile_group_destroy(gpointer data
)
563 GArray
*group
= (GArray
*)data
;
567 for(i
=0; i
<group
->len
; i
++) {
568 tf
= &g_array_index (group
, LttTracefile
, i
);
570 ltt_tracefile_close(tf
);
572 g_array_free(group
, TRUE
);
575 gboolean
ltt_tracefile_group_has_cpu_online(gpointer data
)
577 GArray
*group
= (GArray
*)data
;
581 for(i
=0; i
<group
->len
; i
++) {
582 tf
= &g_array_index (group
, LttTracefile
, i
);
583 if(tf
->cpu_online
) return 1;
589 /* Open each tracefile under a specific directory. Put them in a
590 * GData : permits to access them using their tracefile group pathname.
591 * i.e. access control/modules tracefile group by index :
594 * relative path is the path relative to the trace root
595 * root path is the full path
597 * A tracefile group is simply an array where all the per cpu tracefiles sits.
600 static int open_tracefiles(LttTrace
*trace
, char *root_path
,
603 DIR *dir
= opendir(root_path
);
604 struct dirent
*entry
;
605 struct stat stat_buf
;
613 char rel_path
[PATH_MAX
];
621 strncpy(path
, root_path
, PATH_MAX
-1);
622 path_len
= strlen(path
);
623 path
[path_len
] = '/';
625 path_ptr
= path
+ path_len
;
627 strncpy(rel_path
, relative_path
, PATH_MAX
-1);
628 rel_path_len
= strlen(rel_path
);
629 rel_path
[rel_path_len
] = '/';
631 rel_path_ptr
= rel_path
+ rel_path_len
;
633 while((entry
= readdir(dir
)) != NULL
) {
635 if(entry
->d_name
[0] == '.') continue;
637 strncpy(path_ptr
, entry
->d_name
, PATH_MAX
- path_len
);
638 strncpy(rel_path_ptr
, entry
->d_name
, PATH_MAX
- rel_path_len
);
640 ret
= stat(path
, &stat_buf
);
646 g_debug("Tracefile file or directory : %s\n", path
);
648 if(S_ISDIR(stat_buf
.st_mode
)) {
650 g_debug("Entering subdirectory...\n");
651 ret
= open_tracefiles(trace
, path
, rel_path
);
652 if(ret
< 0) continue;
653 } else if(S_ISREG(stat_buf
.st_mode
)) {
654 g_debug("Opening file.\n");
662 if(get_tracefile_name_number(rel_path
, &name
, &num
))
663 continue; /* invalid name */
665 g_debug("Tracefile name is %s and number is %u",
666 g_quark_to_string(name
), num
);
668 group
= g_datalist_id_get_data(&trace
->tracefiles
, name
);
670 /* Elements are automatically cleared when the array is allocated.
671 * It makes the cpu_online variable set to 0 : cpu offline, by default.
673 group
= g_array_sized_new (FALSE
, TRUE
, sizeof(LttTracefile
), 10);
674 g_datalist_id_set_data_full(&trace
->tracefiles
, name
,
675 group
, ltt_tracefile_group_destroy
);
677 /* Add the per cpu tracefile to the named group */
678 unsigned int old_len
= group
->len
;
680 group
= g_array_set_size(group
, num
+1);
681 tf
= &g_array_index (group
, LttTracefile
, num
);
683 if(ltt_tracefile_open(trace
, path
, tf
)) {
684 g_info("Error opening tracefile %s", path
);
685 g_array_set_size(group
, old_len
);
687 if(!ltt_tracefile_group_has_cpu_online(group
))
688 g_datalist_id_remove_data(&trace
->tracefiles
, name
);
690 continue; /* error opening the tracefile : bad magic number ? */
702 /* ltt_get_facility_description
704 * Opens the trace corresponding to the requested facility (identified by fac_id
707 * The name searched is : %trace root%/eventdefs/facname_checksum.xml
709 * Returns 0 on success, or 1 on failure.
712 static int ltt_get_facility_description(LttFacility
*f
,
714 LttTracefile
*fac_tf
)
716 char desc_file_name
[PATH_MAX
];
723 text
= g_quark_to_string(t
->pathname
);
724 textlen
= strlen(text
);
726 if(textlen
>= PATH_MAX
) goto name_error
;
727 strcpy(desc_file_name
, text
);
729 text
= "/eventdefs/";
730 textlen
+=strlen(text
);
731 if(textlen
>= PATH_MAX
) goto name_error
;
732 strcat(desc_file_name
, text
);
734 text
= g_quark_to_string(f
->name
);
735 textlen
+=strlen(text
);
736 if(textlen
>= PATH_MAX
) goto name_error
;
737 strcat(desc_file_name
, text
);
740 textlen
+=strlen(text
);
741 if(textlen
>= PATH_MAX
) goto name_error
;
742 strcat(desc_file_name
, text
);
744 err
= snprintf(desc_file_name
+textlen
, PATH_MAX
-textlen
-1,
746 if(err
) goto name_error
;
748 textlen
=strlen(desc_file_name
);
751 textlen
+=strlen(text
);
752 if(textlen
>= PATH_MAX
) goto name_error
;
753 strcat(desc_file_name
, text
);
755 err
= ltt_facility_open(f
, t
, desc_file_name
);
756 if(err
) goto facility_error
;
758 for(i
=0;i
<t
->facilities_by_num
->len
;i
++){
759 f
= &g_array_index(t
->facilities_by_num
, LttFacility
, i
);
761 for(j
=0; j
<f
->events
->len
; j
++){
762 et
= &g_array_index(f
->events
, LttEventType
, j
);
763 set_fields_offsets(fac_tf
, et
);
776 static void ltt_fac_ids_destroy(gpointer data
)
778 GArray
*fac_ids
= (GArray
*)data
;
782 for(i
=0; i
<fac_ids
->len
; i
++) {
783 fac
= &g_array_index (fac_ids
, LttFacility
, i
);
784 ltt_facility_close(fac
);
787 g_array_free(fac_ids
, TRUE
);
791 /* Presumes the tracefile is already seeked at the beginning. It makes sense,
792 * because it must be done just after the opening */
793 static int ltt_process_facility_tracefile(LttTracefile
*tf
)
800 err
= ltt_tracefile_read_seek(tf
);
801 if(err
== EPERM
) goto seek_error
;
802 else if(err
== ERANGE
) break; /* End of tracefile */
804 err
= ltt_tracefile_read_update_event(tf
);
805 if(err
) goto update_error
;
807 /* We are on a facility load/or facility unload/ or heartbeat event */
809 * * facility 0 is hardcoded : this is the core facility. It will be shown
810 * in the facility array though, and is shown as "loaded builtin" in the
812 * It contains event :
814 * 1 : facility unload
815 * 2 : state dump facility load
816 * Facility 1 : (heartbeat)
819 if(tf
->event
.facility_id
> 1) { /* Should only contain core and heartbeat
821 g_warning("Error in processing facility file %s, "
822 "should not contain facility id %u.", g_quark_to_string(tf
->name
),
823 tf
->event
.facility_id
);
826 } else if(tf
->event
.facility_id
== LTT_FACILITY_CORE
) {
828 struct LttFacilityLoad
*fac_load_data
;
832 switch((enum ltt_core_events
)tf
->event
.event_id
) {
833 case LTT_EVENT_FACILITY_LOAD
:
835 (struct LttFacilityLoad
*)tf
->event
.data
;
837 (char*)(tf
->event
.data
+ sizeof(struct LttFacilityLoad
));
838 fac
= &g_array_index (tf
->trace
->facilities_by_num
, LttFacility
,
839 ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
));
840 g_assert(fac
->exists
== 0);
841 fac
->name
= g_quark_from_string(fac_name
);
842 fac
->checksum
= ltt_get_uint32(LTT_GET_BO(tf
),
843 &fac_load_data
->checksum
);
844 fac
->id
= ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
);
845 fac
->pointer_size
= ltt_get_uint32(LTT_GET_BO(tf
),
846 &fac_load_data
->pointer_size
);
847 fac
->size_t_size
= ltt_get_uint32(LTT_GET_BO(tf
),
848 &fac_load_data
->size_t_size
);
849 fac
->alignment
= ltt_get_uint32(LTT_GET_BO(tf
),
850 &fac_load_data
->alignment
);
852 if(ltt_get_facility_description(fac
, tf
->trace
, tf
))
855 fac
->trace
= tf
->trace
;
858 fac_ids
= g_datalist_id_get_data(&tf
->trace
->facilities_by_name
,
860 if(fac_ids
== NULL
) {
861 fac_ids
= g_array_sized_new (FALSE
, TRUE
, sizeof(guint
), 1);
862 g_datalist_id_set_data_full(&tf
->trace
->facilities_by_name
,
864 fac_ids
, ltt_fac_ids_destroy
);
866 g_array_append_val(fac_ids
, fac
->id
);
869 case LTT_EVENT_FACILITY_UNLOAD
:
870 /* We don't care about unload : facilities ID are valid for the whole
871 * trace. They simply won't be used after the unload. */
873 case LTT_EVENT_STATE_DUMP_FACILITY_LOAD
:
875 (struct LttFacilityLoad
*)tf
->event
.data
;
877 (char*)(tf
->event
.data
+ sizeof(struct LttFacilityLoad
));
878 fac
= &g_array_index (tf
->trace
->facilities_by_num
, LttFacility
,
879 ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
));
880 g_assert(fac
->exists
== 0);
881 fac
->name
= g_quark_from_string(fac_name
);
882 fac
->checksum
= ltt_get_uint32(LTT_GET_BO(tf
),
883 &fac_load_data
->checksum
);
884 fac
->id
= fac_load_data
->id
;
885 fac
->pointer_size
= ltt_get_uint32(LTT_GET_BO(tf
),
886 &fac_load_data
->pointer_size
);
887 fac
->size_t_size
= ltt_get_uint32(LTT_GET_BO(tf
),
888 &fac_load_data
->size_t_size
);
889 fac
->alignment
= ltt_get_uint32(LTT_GET_BO(tf
),
890 &fac_load_data
->alignment
);
891 if(ltt_get_facility_description(fac
, tf
->trace
, tf
))
894 fac
->trace
= tf
->trace
;
898 fac_ids
= g_datalist_id_get_data(&tf
->trace
->facilities_by_name
,
900 if(fac_ids
== NULL
) {
901 fac_ids
= g_array_sized_new (FALSE
, TRUE
, sizeof(guint
), 1);
902 g_datalist_id_set_data_full(&tf
->trace
->facilities_by_name
,
904 fac_ids
, ltt_fac_ids_destroy
);
906 g_array_append_val(fac_ids
, fac
->id
);
909 case LTT_EVENT_HEARTBEAT
:
912 g_warning("Error in processing facility file %s, "
913 "unknown event id %hhu in core facility.",
914 g_quark_to_string(tf
->name
),
933 LttTrace
*ltt_trace_open(const gchar
*pathname
)
935 gchar abs_path
[PATH_MAX
];
940 struct ltt_block_start_header
*header
;
942 t
= g_new(LttTrace
, 1);
943 if(!t
) goto alloc_error
;
945 get_absolute_pathname(pathname
, abs_path
);
946 t
->pathname
= g_quark_from_string(abs_path
);
948 /* Open all the tracefiles */
949 g_datalist_init(&t
->tracefiles
);
950 if(open_tracefiles(t
, abs_path
, ""))
953 /* Prepare the facilities containers : array and mapping */
954 /* Array is zeroed : the "exists" field is set to false by default */
955 t
->facilities_by_num
= g_array_sized_new (FALSE
,
956 TRUE
, sizeof(LttFacility
),
958 t
->facilities_by_num
= g_array_set_size(t
->facilities_by_num
, NUM_FACILITIES
);
960 g_datalist_init(&t
->facilities_by_name
);
962 /* Parse each trace control/facilitiesN files : get runtime fac. info */
963 group
= g_datalist_id_get_data(&t
->tracefiles
, LTT_TRACEFILE_NAME_FACILITIES
);
965 g_error("Trace %s has no facility tracefile", abs_path
);
967 goto facilities_error
;
970 /* Get the trace information for the control/facility 0 tracefile */
971 g_assert(group
->len
> 0);
972 tf
= &g_array_index (group
, LttTracefile
, 0);
973 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
974 t
->arch_type
= ltt_get_uint32(LTT_GET_BO(tf
), &header
->trace
.arch_type
);
975 t
->arch_variant
= ltt_get_uint32(LTT_GET_BO(tf
), &header
->trace
.arch_variant
);
976 t
->arch_size
= header
->trace
.arch_size
;
977 t
->ltt_major_version
= header
->trace
.major_version
;
978 t
->ltt_minor_version
= header
->trace
.minor_version
;
979 t
->flight_recorder
= header
->trace
.flight_recorder
;
980 t
->has_heartbeat
= header
->trace
.has_heartbeat
;
981 t
->has_alignment
= header
->trace
.has_alignment
;
982 t
->has_tsc
= header
->trace
.has_tsc
;
985 for(i
=0; i
<group
->len
; i
++) {
986 tf
= &g_array_index (group
, LttTracefile
, i
);
987 if(ltt_process_facility_tracefile(tf
))
988 goto facilities_error
;
995 g_datalist_clear(&t
->facilities_by_name
);
996 g_array_free(t
->facilities_by_num
, TRUE
);
998 g_datalist_clear(&t
->tracefiles
);
1005 GQuark
ltt_trace_name(LttTrace
*t
)
1011 /******************************************************************************
1012 * When we copy a trace, we want all the opening actions to happen again :
1013 * the trace will be reopened and totally independant from the original.
1014 * That's why we call ltt_trace_open.
1015 *****************************************************************************/
1016 LttTrace
*ltt_trace_copy(LttTrace
*self
)
1018 return ltt_trace_open(g_quark_to_string(self
->pathname
));
1021 void ltt_trace_close(LttTrace
*t
)
1023 g_datalist_clear(&t
->facilities_by_name
);
1024 g_array_free(t
->facilities_by_num
, TRUE
);
1025 g_datalist_clear(&t
->tracefiles
);
1030 /*****************************************************************************
1031 *Get the system description of the trace
1032 ****************************************************************************/
1034 LttFacility
*ltt_trace_facility_by_id(LttTrace
*t
, guint8 id
)
1036 g_assert(id
< t
->facilities_by_num
->len
);
1037 return &g_array_index(t
->facilities_by_num
, LttFacility
, id
);
1040 /* ltt_trace_facility_get_by_name
1042 * Returns the GArray of facility indexes. All the fac_ids that matches the
1043 * requested facility name.
1045 * If name is not found, returns NULL.
1047 GArray
*ltt_trace_facility_get_by_name(LttTrace
*t
, GQuark name
)
1049 return g_datalist_id_get_data(&t
->facilities_by_name
, name
);
1052 /*****************************************************************************
1053 * Functions to discover all the event types in the trace
1054 ****************************************************************************/
1057 unsigned ltt_trace_eventtype_number(LttTrace
*t
)
1061 unsigned int num
= t
->facility_number
;
1065 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
1066 count
+= f
->event_number
;
1073 //use an iteration on all the trace facilities, and inside iteration on all the
1074 //event types in each facilities instead.
1075 LttEventType
*ltt_trace_eventtype_get(LttTrace
*t
, unsigned evId
)
1077 LttEventType
*event_type
;
1080 f
= ltt_trace_facility_by_id(t
,evId
);
1082 if(unlikely(!f
)) event_type
= NULL
;
1083 else event_type
= f
->events
[evId
- f
->base_id
];
1090 /*****************************************************************************
1091 * ltt_trace_find_tracefile
1093 * Find a tracefile by name and index in the group.
1095 * Returns a pointer to the tracefiles, else NULL.
1096 ****************************************************************************/
1098 LttTracefile
*ltt_trace_find_tracefile(LttTrace
*t
, const gchar
*name
)
1103 /*****************************************************************************
1104 * Get the start time and end time of the trace
1105 ****************************************************************************/
1107 static void ltt_tracefile_time_span_get(LttTracefile
*tf
,
1108 LttTime
*start
, LttTime
*end
)
1110 struct ltt_block_start_header
* header
;
1113 err
= map_block(tf
, 0);
1115 g_error("Can not map block");
1116 *start
= ltt_time_infinite
;
1118 *start
= tf
->buffer
.begin
.timestamp
;
1120 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1122 g_error("Can not map block");
1123 *end
= ltt_time_zero
;
1125 *end
= tf
->buffer
.end
.timestamp
;
1128 struct tracefile_time_span_get_args
{
1134 static void group_time_span_get(GQuark name
, gpointer data
, gpointer user_data
)
1136 struct tracefile_time_span_get_args
*args
=
1137 (struct tracefile_time_span_get_args
*)user_data
;
1139 GArray
*group
= (GArray
*)data
;
1145 for(i
=0; i
<group
->len
; i
++) {
1146 tf
= &g_array_index (group
, LttTracefile
, i
);
1147 if(tf
->cpu_online
) {
1148 ltt_tracefile_time_span_get(tf
, &tmp_start
, &tmp_end
);
1149 if(ltt_time_compare(*args
->start
, tmp_start
)>0) *args
->start
= tmp_start
;
1150 if(ltt_time_compare(*args
->end
, tmp_end
)<0) *args
->end
= tmp_end
;
1155 void ltt_trace_time_span_get(LttTrace
*t
, LttTime
*start
, LttTime
*end
)
1157 LttTime min_start
= ltt_time_infinite
;
1158 LttTime max_end
= ltt_time_zero
;
1159 struct tracefile_time_span_get_args args
= { t
, &min_start
, &max_end
};
1161 g_datalist_foreach(&t
->tracefiles
, &group_time_span_get
, &args
);
1163 if(start
!= NULL
) *start
= min_start
;
1164 if(end
!= NULL
) *end
= max_end
;
1169 /*****************************************************************************
1170 *Get the name of a tracefile
1171 ****************************************************************************/
1173 GQuark
ltt_tracefile_name(LttTracefile
*tf
)
1178 /*****************************************************************************
1179 * Get the number of blocks in the tracefile
1180 ****************************************************************************/
1182 guint
ltt_tracefile_block_number(LttTracefile
*tf
)
1184 return tf
->num_blocks
;
1188 /* Seek to the first event in a tracefile that has a time equal or greater than
1189 * the time passed in parameter.
1191 * If the time parameter is outside the tracefile time span, seek to the first
1192 * or the last event of the tracefile.
1194 * If the time parameter is before the first event, we have to seek specially to
1197 * If the time is after the end of the trace, get the last event.
1199 * Do a binary search to find the right block, then a sequential search in the
1200 * block to find the event.
1202 * In the special case where the time requested fits inside a block that has no
1203 * event corresponding to the requested time, the first event of the next block
1206 * IMPORTANT NOTE : // FIXME everywhere...
1208 * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time :
1209 * you will jump over an event if you do.
1211 * Return value : 0 : no error, the tf->event can be used
1212 * otherwise : this is an error.
1216 int ltt_tracefile_seek_time(LttTracefile
*tf
, LttTime time
)
1220 unsigned int block_num
, high
, low
;
1222 /* seek at the beginning of trace */
1223 err
= map_block(tf
, 0); /* First block */
1225 g_error("Can not map block");
1229 /* If the time is lower or equal the beginning of the trace,
1230 * go to the first event. */
1231 if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) <= 0) {
1232 ret
= ltt_tracefile_read(tf
);
1233 goto found
; /* There is either no event in the trace or the event points
1234 to the first event in the trace */
1237 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1239 g_error("Can not map block");
1243 /* If the time is after the end of the trace, get the last event. */
1244 if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) >= 0) {
1245 /* While the ltt_tracefile_read doesn't return ERANGE or EPERM,
1249 ret
= ltt_tracefile_read(tf
);
1250 if(ret
== ERANGE
) goto found
; /* ERANGE or EPERM */
1251 else if(ret
) goto fail
;
1255 /* Binary search the block */
1256 high
= tf
->num_blocks
- 1;
1260 block_num
= ((high
-low
) / 2) + low
;
1262 err
= map_block(tf
, block_num
);
1264 g_error("Can not map block");
1268 /* We cannot divide anymore : this is what would happen if the time
1269 * requested was exactly between two consecutive buffers'end and start
1270 * timestamps. This is also what would happend if we didn't deal with out
1271 * of span cases prior in this function. */
1272 /* The event is right in the buffer!
1273 * (or in the next buffer first event) */
1275 ret
= ltt_tracefile_read(tf
);
1276 if(ret
== ERANGE
) goto found
; /* ERANGE or EPERM */
1277 else if(ret
) goto fail
;
1279 if(ltt_time_compare(time
, tf
->event
.event_time
) >= 0)
1283 } if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) < 0) {
1284 /* go to lower part */
1286 } else if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) > 0) {
1287 /* go to higher part */
1289 } else {/* The event is right in the buffer!
1290 (or in the next buffer first event) */
1292 ltt_tracefile_read(tf
);
1293 if(ret
== ERANGE
) goto found
; /* ERANGE or EPERM */
1294 else if(ret
) goto fail
;
1296 if(ltt_time_compare(time
, tf
->event
.event_time
) >= 0)
1306 /* Error handling */
1308 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1309 g_quark_to_string(tf
->name
));
1314 int ltt_tracefile_seek_position(LttTracefile
*tf
, const LttEventPosition
*ep
) {
1318 if(ep
->tracefile
!= tf
) {
1322 err
= map_block(tf
, ep
->block
);
1324 g_error("Can not map block");
1328 tf
->event
.offset
= ep
->offset
;
1330 err
= ltt_tracefile_read_update_event(tf
);
1332 err
= ltt_tracefile_read_op(tf
);
1338 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1339 g_quark_to_string(tf
->name
));
1342 /* Calculate the real event time based on the buffer boundaries */
1343 LttTime
ltt_interpolate_time(LttTracefile
*tf
, LttEvent
*event
)
1347 g_assert(tf
->trace
->has_tsc
);
1349 time
= ltt_time_from_uint64(
1350 (guint64
)tf
->buffer
.tsc
*tf
->buffer
.nsecs_per_cycle
);
1351 time
= ltt_time_add(tf
->buffer
.begin
.timestamp
, time
);
1357 /* Get the current event of the tracefile : valid until the next read */
1358 LttEvent
*ltt_tracefile_get_event(LttTracefile
*tf
)
1365 /*****************************************************************************
1367 * ltt_tracefile_read : Read the next event in the tracefile
1372 * Returns 0 if an event can be used in tf->event.
1373 * Returns ERANGE on end of trace. The event in tf->event still can be used.
1374 * Returns EPERM on error.
1376 * This function does make the tracefile event structure point to the event
1377 * currently pointed to by the tf->event.
1379 * Note : you must call a ltt_tracefile_seek to the beginning of the trace to
1380 * reinitialize it after an error if you want results to be coherent.
1381 * It would be the case if a end of trace last buffer has no event : the end
1382 * of trace wouldn't be returned, but an error.
1383 * We make the assumption there is at least one event per buffer.
1384 ****************************************************************************/
1386 int ltt_tracefile_read(LttTracefile
*tf
)
1390 err
= ltt_tracefile_read_seek(tf
);
1392 err
= ltt_tracefile_read_update_event(tf
);
1394 err
= ltt_tracefile_read_op(tf
);
1400 int ltt_tracefile_read_seek(LttTracefile
*tf
)
1404 /* Get next buffer until we finally have an event, or end of trace */
1406 err
= ltt_seek_next_event(tf
);
1407 if(unlikely(err
== ENOPROTOOPT
)) {
1411 /* Are we at the end of the buffer ? */
1413 if(unlikely(tf
->buffer
.index
== tf
->num_blocks
-1)){ /* end of trace ? */
1416 /* get next block */
1417 err
= map_block(tf
, tf
->buffer
.index
+ 1);
1419 g_error("Can not map block");
1423 } else break; /* We found an event ! */
1430 /* do specific operation on events */
1431 int ltt_tracefile_read_op(LttTracefile
*tf
)
1440 /* do event specific operation */
1442 /* do something if its an heartbeat event : increment the heartbeat count */
1443 //if(event->facility_id == LTT_FACILITY_CORE)
1444 // if(event->event_id == LTT_EVENT_HEARTBEAT)
1445 // tf->cur_heart_beat_number++;
1451 /* same as ltt_tracefile_read, but does not seek to the next event nor call
1452 * event specific operation. */
1453 int ltt_tracefile_read_update_event(LttTracefile
*tf
)
1461 pos
= tf
->buffer
.head
+ event
->offset
;
1463 /* Read event header */
1467 if(tf
->trace
->has_tsc
) {
1468 if(tf
->trace
->has_heartbeat
) {
1469 event
->time
.timestamp
= ltt_get_uint32(LTT_GET_BO(tf
),
1471 /* 32 bits -> 64 bits tsc */
1472 /* note : still works for seek and non seek cases. */
1473 if(event
->time
.timestamp
< (0xFFFFFFFFULL
&tf
->buffer
.tsc
)) {
1474 tf
->buffer
.tsc
= ((tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1476 | (guint64
)event
->time
.timestamp
;
1477 event
->tsc
= tf
->buffer
.tsc
;
1480 tf
->buffer
.tsc
= (tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1481 | (guint64
)event
->time
.timestamp
;
1482 event
->tsc
= tf
->buffer
.tsc
;
1484 pos
+= sizeof(guint32
);
1486 event
->tsc
= ltt_get_uint64(LTT_GET_BO(tf
), pos
);
1487 tf
->buffer
.tsc
= event
->tsc
;
1488 pos
+= sizeof(guint64
);
1491 event
->event_time
= ltt_interpolate_time(tf
, event
);
1493 event
->time
.delta
.tv_sec
= 0;
1494 event
->time
.delta
.tv_nsec
= ltt_get_uint32(LTT_GET_BO(tf
),
1495 pos
) * NSEC_PER_USEC
;
1497 event
->tsc
= tf
->buffer
.tsc
;
1499 event
->event_time
= ltt_time_add(tf
->buffer
.begin
.timestamp
,
1501 pos
+= sizeof(guint32
);
1504 event
->facility_id
= *(guint8
*)pos
;
1505 pos
+= sizeof(guint8
);
1507 event
->event_id
= *(guint8
*)pos
;
1508 pos
+= sizeof(guint8
);
1512 /* get the data size and update the event fields with the current
1514 ltt_update_event_size(tf
);
1520 /****************************************************************************
1522 * map_block : map a block from the file
1524 * lttdes : ltt trace file
1525 * whichBlock : the block which will be read
1528 * EINVAL : lseek fail
1529 * EIO : can not read from the file
1530 ****************************************************************************/
1532 static gint
map_block(LttTracefile
* tf
, guint block_num
)
1534 struct ltt_block_start_header
*header
;
1536 g_assert(block_num
< tf
->num_blocks
);
1538 if(tf
->buffer
.head
!= NULL
)
1539 munmap(tf
->buffer
.head
, tf
->buf_size
);
1541 /* Multiple of pages aligned head */
1542 tf
->buffer
.head
= mmap(0, tf
->block_size
, PROT_READ
, MAP_PRIVATE
, tf
->fd
,
1543 (off_t
)tf
->block_size
* (off_t
)block_num
);
1545 if(tf
->buffer
.head
== MAP_FAILED
) {
1546 perror("Error in allocating memory for buffer of tracefile");
1550 g_assert( ( (guint
)tf
->buffer
.head
&(8-1) ) == 0); // make sure it's aligned.
1553 tf
->buffer
.index
= block_num
;
1555 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
1557 tf
->buffer
.begin
.timestamp
= ltt_get_time(LTT_GET_BO(tf
),
1558 &header
->begin
.timestamp
);
1559 tf
->buffer
.begin
.timestamp
.tv_nsec
*= NSEC_PER_USEC
;
1560 tf
->buffer
.begin
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1561 &header
->begin
.cycle_count
);
1562 tf
->buffer
.end
.timestamp
= ltt_get_time(LTT_GET_BO(tf
),
1563 &header
->end
.timestamp
);
1564 tf
->buffer
.end
.timestamp
.tv_nsec
*= NSEC_PER_USEC
;
1565 tf
->buffer
.end
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1566 &header
->end
.cycle_count
);
1567 tf
->buffer
.lost_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1568 &header
->lost_size
);
1570 tf
->buffer
.tsc
= tf
->buffer
.begin
.cycle_count
;
1571 tf
->event
.tsc
= tf
->buffer
.tsc
;
1574 * eventually support variable buffer size : will need a partial pre-read of
1575 * the headers to create an index when we open the trace... eventually. */
1576 g_assert(tf
->block_size
== ltt_get_uint32(LTT_GET_BO(tf
),
1577 &header
->buf_size
));
1579 /* Now that the buffer is mapped, calculate the time interpolation for the
1582 tf
->buffer
.nsecs_per_cycle
= calc_nsecs_per_cycle(tf
);
1584 /* Make the current event point to the beginning of the buffer :
1585 * it means that the event read must get the first event. */
1586 tf
->event
.tracefile
= tf
;
1587 tf
->event
.block
= block_num
;
1588 tf
->event
.offset
= 0;
1597 /* It will update the fields offsets too */
1598 void ltt_update_event_size(LttTracefile
*tf
)
1602 /* Specific handling of core events : necessary to read the facility control
1604 LttFacility
*f
= ltt_trace_get_facility_by_num(tf
->trace
,
1605 tf
->event
.facility_id
);
1607 if(likely(tf
->event
.facility_id
== LTT_FACILITY_CORE
)) {
1608 switch((enum ltt_core_events
)tf
->event
.event_id
) {
1609 case LTT_EVENT_FACILITY_LOAD
:
1610 size
= strlen((char*)tf
->event
.data
);
1611 size
+= sizeof(struct LttFacilityLoad
);
1613 case LTT_EVENT_FACILITY_UNLOAD
:
1614 size
= sizeof(struct LttFacilityUnload
);
1616 case LTT_EVENT_STATE_DUMP_FACILITY_LOAD
:
1617 size
= strlen((char*)tf
->event
.data
);
1618 size
+= sizeof(struct LttStateDumpFacilityLoad
);
1620 case LTT_EVENT_HEARTBEAT
:
1621 size
= sizeof(TimeHeartbeat
);
1624 g_warning("Error in getting event size : tracefile %s, "
1625 "unknown event id %hhu in core facility.",
1626 g_quark_to_string(tf
->name
),
1627 tf
->event
.event_id
);
1628 goto event_id_error
;
1633 g_error("Unknown facility %hhu (0x%hhx) in tracefile %s",
1634 tf
->event
.facility_id
,
1635 tf
->event
.facility_id
,
1636 g_quark_to_string(tf
->name
));
1637 goto facility_error
;
1640 LttEventType
*event_type
=
1641 ltt_facility_eventtype_get(f
, tf
->event
.event_id
);
1644 g_error("Unknown event id %hhu in facility %s in tracefile %s",
1646 g_quark_to_string(f
->name
),
1647 g_quark_to_string(tf
->name
));
1648 goto event_type_error
;
1651 size
= get_field_type_size(tf
, event_type
,
1652 0, 0, event_type
->root_field
, tf
->event
.data
);
1653 g_debug("Event root field : f.e %hhu.%hhu size %lu", tf
->event
.facility_id
,
1654 tf
->event
.event_id
, size
);
1657 tf
->event
.data_size
= size
;
1664 tf
->event
.data_size
= 0;
1668 /* Take the tf current event offset and use the event facility id and event id
1669 * to figure out where is the next event offset.
1671 * This is an internal function not aiming at being used elsewhere : it will
1672 * not jump over the current block limits. Please consider using
1673 * ltt_tracefile_read to do this.
1675 * Returns 0 on success
1676 * ERANGE if we are at the end of the buffer.
1677 * ENOPROTOOPT if an error occured when getting the current event size.
1679 static int ltt_seek_next_event(LttTracefile
*tf
)
1685 /* seek over the buffer header if we are at the buffer start */
1686 if(tf
->event
.offset
== 0) {
1687 tf
->event
.offset
+= sizeof(struct ltt_block_start_header
);
1692 if(tf
->event
.offset
== tf
->buffer
.lost_size
) {
1697 pos
= tf
->event
.data
;
1699 if(tf
->event
.data_size
< 0) goto error
;
1701 pos
+= (size_t)tf
->event
.data_size
;
1703 tf
->event
.offset
= pos
- tf
->buffer
.head
;
1709 g_error("Error in ltt_seek_next_event for tracefile %s",
1710 g_quark_to_string(tf
->name
));
1715 /*****************************************************************************
1717 * calc_nsecs_per_cycle : calculate nsecs per cycle for current block
1720 ****************************************************************************/
1722 static double calc_nsecs_per_cycle(LttTracefile
* tf
)
1724 LttTime lBufTotalTime
; /* Total time for this buffer */
1725 double lBufTotalNSec
; /* Total time for this buffer in nsecs */
1726 LttCycleCount lBufTotalCycle
;/* Total cycles for this buffer */
1728 /* Calculate the total time for this buffer */
1729 lBufTotalTime
= ltt_time_sub(
1730 ltt_get_time(LTT_GET_BO(tf
), &tf
->buffer
.end
.timestamp
),
1731 ltt_get_time(LTT_GET_BO(tf
), &tf
->buffer
.begin
.timestamp
));
1733 /* Calculate the total cycles for this bufffer */
1734 lBufTotalCycle
= ltt_get_uint64(LTT_GET_BO(tf
), &tf
->buffer
.end
.cycle_count
);
1735 lBufTotalCycle
-= ltt_get_uint64(LTT_GET_BO(tf
),
1736 &tf
->buffer
.begin
.cycle_count
);
1738 /* Convert the total time to double */
1739 lBufTotalNSec
= ltt_time_to_double(lBufTotalTime
);
1741 return lBufTotalNSec
/ (double)lBufTotalCycle
;
1745 void setFieldsOffset(LttTracefile
*tf
, LttEventType
*evT
,void *evD
)
1747 LttField
* rootFld
= evT
->root_field
;
1748 // rootFld->base_address = evD;
1751 rootFld
->field_size
= getFieldtypeSize(tf
, evT
->facility
,
1752 evT
, 0,0,rootFld
, evD
);
1756 /*****************************************************************************
1758 * set_fields_offsets : set the precomputable offset of the fields
1760 * tracefile : opened trace file
1761 * event_type : the event type
1762 ****************************************************************************/
1764 void set_fields_offsets(LttTracefile
*tf
, LttEventType
*event_type
)
1766 LttField
*field
= event_type
->root_field
;
1767 enum field_status fixed_root
= FIELD_FIXED
, fixed_parent
= FIELD_FIXED
;
1770 preset_field_type_size(tf
, event_type
, 0, 0,
1771 &fixed_root
, &fixed_parent
,
1777 /*****************************************************************************
1779 * preset_field_type_size : set the fixed sizes of the field type
1782 * event_type : event type
1783 * offset_root : offset from the root
1784 * offset_parent : offset from the parent
1785 * fixed_root : Do we know a fixed offset to the root ?
1786 * fixed_parent : Do we know a fixed offset to the parent ?
1788 ****************************************************************************/
1789 void preset_field_type_size(LttTracefile
*tf
, LttEventType
*event_type
,
1790 off_t offset_root
, off_t offset_parent
,
1791 enum field_status
*fixed_root
, enum field_status
*fixed_parent
,
1794 enum field_status local_fixed_root
, local_fixed_parent
;
1798 g_assert(field
->fixed_root
== FIELD_UNKNOWN
);
1799 g_assert(field
->fixed_parent
== FIELD_UNKNOWN
);
1800 g_assert(field
->fixed_size
== FIELD_UNKNOWN
);
1802 type
= field
->field_type
;
1804 field
->fixed_root
= *fixed_root
;
1805 if(field
->fixed_root
== FIELD_FIXED
)
1806 field
->offset_root
= offset_root
;
1808 field
->offset_root
= 0;
1810 field
->fixed_parent
= *fixed_parent
;
1811 if(field
->fixed_parent
== FIELD_FIXED
)
1812 field
->offset_parent
= offset_parent
;
1814 field
->offset_parent
= 0;
1816 size_t current_root_offset
;
1817 size_t current_offset
;
1818 enum field_status current_child_status
, final_child_status
;
1821 switch(type
->type_class
) {
1826 field
->field_size
= ltt_type_size(tf
->trace
, type
);
1827 field
->fixed_size
= FIELD_FIXED
;
1830 field
->field_size
= (off_t
)event_type
->facility
->pointer_size
;
1831 field
->fixed_size
= FIELD_FIXED
;
1835 field
->field_size
= (off_t
)event_type
->facility
->pointer_size
;
1836 field
->fixed_size
= FIELD_FIXED
;
1841 field
->field_size
= (off_t
)event_type
->facility
->size_t_size
;
1842 field
->fixed_size
= FIELD_FIXED
;
1845 local_fixed_root
= FIELD_VARIABLE
;
1846 local_fixed_parent
= FIELD_VARIABLE
;
1847 preset_field_type_size(tf
, event_type
,
1849 &local_fixed_root
, &local_fixed_parent
,
1851 field
->fixed_size
= FIELD_VARIABLE
;
1852 field
->field_size
= 0;
1855 field
->fixed_size
= FIELD_VARIABLE
;
1856 field
->field_size
= 0;
1859 local_fixed_root
= FIELD_VARIABLE
;
1860 local_fixed_parent
= FIELD_VARIABLE
;
1861 preset_field_type_size(tf
, event_type
,
1863 &local_fixed_root
, &local_fixed_parent
,
1865 field
->fixed_size
= field
->child
[0]->fixed_size
;
1866 if(field
->fixed_size
== FIELD_FIXED
)
1867 field
->field_size
= type
->element_number
* field
->child
[0]->field_size
;
1869 field
->field_size
= 0;
1872 current_root_offset
= field
->offset_root
;
1874 current_child_status
= FIELD_FIXED
;
1875 for(i
=0;i
<type
->element_number
;i
++) {
1876 preset_field_type_size(tf
, event_type
,
1877 current_root_offset
, current_offset
,
1878 fixed_root
, ¤t_child_status
,
1880 if(current_child_status
== FIELD_FIXED
) {
1881 current_root_offset
+= field
->child
[i
]->field_size
;
1882 current_offset
+= field
->child
[i
]->field_size
;
1884 current_root_offset
= 0;
1888 if(current_child_status
!= FIELD_FIXED
) {
1889 *fixed_parent
= current_child_status
;
1890 field
->field_size
= 0;
1891 field
->fixed_size
= current_child_status
;
1893 field
->field_size
= current_offset
;
1894 field
->fixed_size
= FIELD_FIXED
;
1898 current_root_offset
= field
->offset_root
;
1901 final_child_status
= FIELD_FIXED
;
1902 for(i
=0;i
<type
->element_number
;i
++) {
1903 enum field_status current_root_child_status
= FIELD_FIXED
;
1904 enum field_status current_child_status
= FIELD_FIXED
;
1905 preset_field_type_size(tf
, event_type
,
1906 current_root_offset
, current_offset
,
1907 ¤t_root_child_status
, ¤t_child_status
,
1909 if(current_child_status
!= FIELD_FIXED
)
1910 final_child_status
= current_child_status
;
1912 max_size
= max(max_size
, field
->child
[i
]->field_size
);
1914 if(final_child_status
!= FIELD_FIXED
) {
1915 *fixed_root
= final_child_status
;
1916 *fixed_parent
= final_child_status
;
1917 field
->field_size
= 0;
1918 field
->fixed_size
= current_child_status
;
1920 field
->field_size
= max_size
;
1921 field
->fixed_size
= FIELD_FIXED
;
1929 /*****************************************************************************
1931 * check_fields_compatibility : Check for compatibility between two fields :
1932 * do they use the same inner structure ?
1934 * event_type1 : event type
1935 * event_type2 : event type
1938 *Returns : 0 if identical
1940 ****************************************************************************/
1941 gint
check_fields_compatibility(LttEventType
*event_type1
,
1942 LttEventType
*event_type2
,
1943 LttField
*field1
, LttField
*field2
)
1945 guint different
= 0;
1946 enum field_status local_fixed_root
, local_fixed_parent
;
1951 if(field1
== NULL
) {
1952 if(field2
== NULL
) goto end
;
1957 } else if(field2
== NULL
) {
1962 g_assert(field1
->fixed_root
!= FIELD_UNKNOWN
);
1963 g_assert(field2
->fixed_root
!= FIELD_UNKNOWN
);
1964 g_assert(field1
->fixed_parent
!= FIELD_UNKNOWN
);
1965 g_assert(field2
->fixed_parent
!= FIELD_UNKNOWN
);
1966 g_assert(field1
->fixed_size
!= FIELD_UNKNOWN
);
1967 g_assert(field2
->fixed_size
!= FIELD_UNKNOWN
);
1969 type1
= field1
->field_type
;
1970 type2
= field2
->field_type
;
1972 size_t current_root_offset
;
1973 size_t current_offset
;
1974 enum field_status current_child_status
, final_child_status
;
1977 if(type1
->type_class
!= type2
->type_class
) {
1981 if(type1
->element_name
!= type2
->element_name
) {
1986 switch(type1
->type_class
) {
1996 if(field1
->field_size
!= field2
->field_size
) {
2002 if(type1
->element_number
!= type2
->element_number
) {
2006 for(i
=0;i
<type1
->element_number
;i
++) {
2007 if(type1
->enum_strings
[i
] != type2
->enum_strings
[i
]) {
2014 /* Two elements : size and child */
2015 g_assert(type1
->element_number
!= type2
->element_number
);
2016 for(i
=0;i
<type1
->element_number
;i
++) {
2017 if(check_fields_compatibility(event_type1
, event_type2
,
2018 field1
->child
[0], field2
->child
[0])) {
2027 if(field1
->field_size
!= field2
->field_size
) {
2031 /* Two elements : size and child */
2032 g_assert(type1
->element_number
!= type2
->element_number
);
2033 for(i
=0;i
<type1
->element_number
;i
++) {
2034 if(check_fields_compatibility(event_type1
, event_type2
,
2035 field1
->child
[0], field2
->child
[0])) {
2043 if(type1
->element_number
!= type2
->element_number
) {
2047 for(i
=0;i
<type1
->element_number
;i
++) {
2048 if(check_fields_compatibility(event_type1
, event_type2
,
2049 field1
->child
[0], field2
->child
[0])) {
2064 /*****************************************************************************
2066 * getFieldtypeSize: get the size of the field type (primitive type)
2069 * offsetRoot : offset from the root
2070 * offsetParent : offset from the parrent
2072 * evD : event data, it may be NULL
2074 * int : size of the field
2075 ****************************************************************************/
2077 static inline gint
getFieldtypeSize(LttTracefile
*tf
,
2078 LttEventType
* evT
, gint offsetRoot
,
2079 gint offsetParent
, LttField
* fld
, void *evD
)
2081 gint size
, size1
, element_number
, i
, offset1
, offset2
;
2082 LttType
* type
= fld
->field_type
;
2084 /* This likely has been tested with gcov : half of them.. */
2085 if(unlikely(fld
->field_fixed
== 1)){
2087 if(unlikely(fld
== evT
->root_field
)) {
2088 size
= fld
->field_size
;
2089 goto end_getFieldtypeSize
;
2093 /* From gcov profiling : half string, half struct, can we gain something
2094 * from that ? (Mathieu) */
2095 switch(type
->type_class
) {
2097 element_number
= (int) type
->element_number
;
2098 if(fld
->field_fixed
== -1){
2099 size
= getFieldtypeSize(tf
, evT
, offsetRoot
,
2100 0,fld
->child
[0], NULL
);
2101 if(size
== 0){ //has string or sequence
2102 fld
->field_fixed
= 0;
2104 fld
->field_fixed
= 1;
2105 size
*= element_number
;
2107 }else if(fld
->field_fixed
== 0){// has string or sequence
2109 for(i
=0;i
<element_number
;i
++){
2110 size
+= getFieldtypeSize(tf
, evT
, offsetRoot
+size
,size
,
2111 fld
->child
[0], evD
+size
);
2113 }else size
= fld
->field_size
;
2115 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2116 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2122 size1
= (int) ltt_type_size(fac
, type
);
2123 if(fld
->field_fixed
== -1){
2124 fld
->sequ_number_size
= size1
;
2125 fld
->field_fixed
= 0;
2126 size
= getFieldtypeSize(evT
, offsetRoot
,
2127 0,fld
->child
[0], NULL
);
2128 fld
->element_size
= size
;
2130 element_number
= getIntNumber(tf
,size1
,evD
);
2131 type
->element_number
= element_number
;
2132 if(fld
->element_size
> 0){
2133 size
= element_number
* fld
->element_size
;
2134 }else{//sequence has string or sequence
2136 for(i
=0;i
<element_number
;i
++){
2137 size
+= getFieldtypeSize(tf
, evT
,
2138 offsetRoot
+size
+size1
,size
+size1
,
2139 fld
->child
[0], evD
+size
+size1
);
2145 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2146 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2153 if(fld
->field_fixed
== -1){
2154 fld
->field_fixed
= 0;
2156 /* Hope my implementation is faster than strlen (Mathieu) */
2157 char *ptr
=(char*)evD
;
2159 /* from gcov : many many strings are empty, make it the common case.*/
2160 while(unlikely(*ptr
!= '\0')) { size
++; ptr
++; }
2161 //size = ptr - (char*)evD + 1; //include end : '\0'
2163 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2164 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2169 element_number
= (int) type
->element_number
;
2171 /* tested with gcov */
2172 if(unlikely(fld
->field_fixed
== -1)){
2173 offset1
= offsetRoot
;
2175 for(i
=0;i
<element_number
;i
++){
2176 size1
=getFieldtypeSize(tf
, evT
,offset1
,offset2
,
2177 fld
->child
[i
], NULL
);
2178 if(likely(size1
> 0 && size
>= 0)){
2180 if(likely(offset1
>= 0)) offset1
+= size1
;
2188 if(unlikely(size
== -1)){
2189 fld
->field_fixed
= 0;
2191 }else fld
->field_fixed
= 1;
2192 }else if(likely(fld
->field_fixed
== 0)){
2193 offset1
= offsetRoot
;
2195 for(i
=0;unlikely(i
<element_number
);i
++){
2196 size
=getFieldtypeSize(tf
, evT
, offset1
, offset2
,
2197 fld
->child
[i
], evD
+offset2
);
2202 }else size
= fld
->field_size
;
2203 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2204 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2208 if(unlikely(fld
->field_fixed
== -1)){
2209 size
= (int) ltt_type_size(LTT_GET_BO(tf
), type
);
2210 fld
->field_fixed
= 1;
2211 }else size
= fld
->field_size
;
2213 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2214 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2219 fld
->offset_root
= offsetRoot
;
2220 fld
->offset_parent
= offsetParent
;
2221 fld
->field_size
= size
;
2223 end_getFieldtypeSize
:
2229 /*****************************************************************************
2231 * ltt_get_int : get an integer number
2233 * reverse_byte_order: must we reverse the byte order ?
2234 * size : the size of the integer
2235 * ptr : the data pointer
2237 * gint64 : a 64 bits integer
2238 ****************************************************************************/
2240 gint64
ltt_get_int(gboolean reverse_byte_order
, gint size
, void *data
)
2245 case 1: val
= *((gint8
*)data
); break;
2246 case 2: val
= ltt_get_int16(reverse_byte_order
, data
); break;
2247 case 4: val
= ltt_get_int32(reverse_byte_order
, data
); break;
2248 case 8: val
= ltt_get_int64(reverse_byte_order
, data
); break;
2249 default: val
= ltt_get_int64(reverse_byte_order
, data
);
2250 g_critical("get_int : integer size %d unknown", size
);
2257 /*****************************************************************************
2259 * ltt_get_uint : get an unsigned integer number
2261 * reverse_byte_order: must we reverse the byte order ?
2262 * size : the size of the integer
2263 * ptr : the data pointer
2265 * guint64 : a 64 bits unsigned integer
2266 ****************************************************************************/
2268 guint64
ltt_get_uint(gboolean reverse_byte_order
, gint size
, void *data
)
2273 case 1: val
= *((gint8
*)data
); break;
2274 case 2: val
= ltt_get_uint16(reverse_byte_order
, data
); break;
2275 case 4: val
= ltt_get_uint32(reverse_byte_order
, data
); break;
2276 case 8: val
= ltt_get_uint64(reverse_byte_order
, data
); break;
2277 default: val
= ltt_get_uint64(reverse_byte_order
, data
);
2278 g_critical("get_uint : unsigned integer size %d unknown",
2287 /* get the node name of the system */
2289 char * ltt_trace_system_description_node_name (LttSystemDescription
* s
)
2291 return s
->node_name
;
2295 /* get the domain name of the system */
2297 char * ltt_trace_system_description_domain_name (LttSystemDescription
* s
)
2299 return s
->domain_name
;
2303 /* get the description of the system */
2305 char * ltt_trace_system_description_description (LttSystemDescription
* s
)
2307 return s
->description
;
2311 /* get the start time of the trace */
2313 LttTime
ltt_trace_system_description_trace_start_time(LttSystemDescription
*s
)
2315 return s
->trace_start
;
2319 LttTracefile
*ltt_tracefile_new()
2321 return g_new(LttTracefile
, 1);
2324 void ltt_tracefile_destroy(LttTracefile
*tf
)
2329 void ltt_tracefile_copy(LttTracefile
*dest
, const LttTracefile
*src
)
2334 /* Before library loading... */
2336 static void __attribute__((constructor
)) init(void)
2338 LTT_FACILITY_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
2339 LTT_EVENT_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
2341 LTT_TRACEFILE_NAME_FACILITIES
= g_quark_from_string("/control/facilities");