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
= g_open(fileName
, O_RDONLY
, 0);
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
== NULL
) {
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(GArray
*group
,
547 struct compute_tracefile_group_args args
)
552 for(i
=0; i
<group
->len
; i
++) {
553 tf
= &g_array_index (group
, LttTracefile
, i
);
555 args
.func(tf
, args
.func_args
);
560 void ltt_tracefile_group_destroy(gpointer data
)
562 GArray
*group
= (GArray
*)data
;
566 for(i
=0; i
<group
->len
; i
++) {
567 tf
= &g_array_index (group
, LttTracefile
, i
);
569 ltt_tracefile_close(tf
);
571 g_array_free(group
, TRUE
);
574 gboolean
ltt_tracefile_group_has_cpu_online(gpointer data
)
576 GArray
*group
= (GArray
*)data
;
580 for(i
=0; i
<group
->len
; i
++) {
581 tf
= &g_array_index (group
, LttTracefile
, i
);
582 if(tf
->cpu_online
) return 1;
588 /* Open each tracefile under a specific directory. Put them in a
589 * GData : permits to access them using their tracefile group pathname.
590 * i.e. access control/modules tracefile group by index :
593 * A tracefile group is simply an array where all the per cpu tracefiles sits.
596 static int open_tracefiles(LttTrace
*trace
, char *root_path
, GData
*tracefiles
)
598 DIR *dir
= opendir(root_path
);
599 struct dirent
*entry
;
600 struct stat stat_buf
;
611 strncpy(path
, root_path
, PATH_MAX
-1);
612 path_len
= strlen(path
);
613 path
[path_len
] = '/';
615 path_ptr
= path
+ path_len
;
617 while((entry
= readdir(dir
)) != NULL
) {
619 if(entry
->d_name
[0] == '.') continue;
621 strncpy(path_ptr
, entry
->d_name
, PATH_MAX
- path_len
);
623 ret
= stat(path
, &stat_buf
);
629 g_debug("Tracefile file or directory : %s\n", path
);
631 if(S_ISDIR(stat_buf
.st_mode
)) {
633 g_debug("Entering subdirectory...\n");
634 ret
= open_tracefiles(trace
, path
, tracefiles
);
635 if(ret
< 0) continue;
636 } else if(S_ISREG(stat_buf
.st_mode
)) {
637 g_debug("Opening file.\n");
645 if(get_tracefile_name_number(path
, &name
, &num
))
646 continue; /* invalid name */
648 group
= g_datalist_id_get_data(&tracefiles
, name
);
650 /* Elements are automatically cleared when the array is allocated.
651 * It makes the cpu_online variable set to 0 : cpu offline, by default.
653 group
= g_array_sized_new (FALSE
, TRUE
, sizeof(LttTracefile
), 10);
654 g_datalist_id_set_data_full(&tracefiles
, name
,
655 group
, ltt_tracefile_group_destroy
);
657 /* Add the per cpu tracefile to the named group */
658 unsigned int old_len
= group
->len
;
660 group
= g_array_set_size(group
, num
+1);
661 tf
= &g_array_index (group
, LttTracefile
, num
);
663 if(ltt_tracefile_open(trace
, path
, tf
)) {
664 g_info("Error opening tracefile %s", path
);
665 g_array_set_size(group
, old_len
);
667 if(!ltt_tracefile_group_has_cpu_online(group
))
668 g_datalist_id_remove_data(&tracefiles
, name
);
670 continue; /* error opening the tracefile : bad magic number ? */
682 /* ltt_get_facility_description
684 * Opens the trace corresponding to the requested facility (identified by fac_id
687 * The name searched is : %trace root%/eventdefs/facname_checksum.xml
689 * Returns 0 on success, or 1 on failure.
692 static int ltt_get_facility_description(LttFacility
*f
,
694 LttTracefile
*fac_tf
)
696 char desc_file_name
[PATH_MAX
];
703 text
= g_quark_to_string(t
->pathname
);
704 textlen
= strlen(text
);
706 if(textlen
>= PATH_MAX
) goto name_error
;
707 strcpy(desc_file_name
, text
);
709 text
= "/eventdefs/";
710 textlen
+=strlen(text
);
711 if(textlen
>= PATH_MAX
) goto name_error
;
712 strcat(desc_file_name
, text
);
714 text
= g_quark_to_string(f
->name
);
715 textlen
+=strlen(text
);
716 if(textlen
>= PATH_MAX
) goto name_error
;
717 strcat(desc_file_name
, text
);
720 textlen
+=strlen(text
);
721 if(textlen
>= PATH_MAX
) goto name_error
;
722 strcat(desc_file_name
, text
);
724 err
= snprintf(desc_file_name
+textlen
, PATH_MAX
-textlen
-1,
726 if(err
) goto name_error
;
728 textlen
=strlen(desc_file_name
);
731 textlen
+=strlen(text
);
732 if(textlen
>= PATH_MAX
) goto name_error
;
733 strcat(desc_file_name
, text
);
735 err
= ltt_facility_open(f
, t
, desc_file_name
);
736 if(err
) goto facility_error
;
738 for(i
=0;i
<t
->facilities_by_num
->len
;i
++){
739 f
= &g_array_index(t
->facilities_by_num
, LttFacility
, i
);
741 for(j
=0; j
<f
->events
->len
; j
++){
742 et
= &g_array_index(f
->events
, LttEventType
, j
);
743 set_fields_offsets(fac_tf
, et
);
756 static void ltt_fac_ids_destroy(gpointer data
)
758 GArray
*fac_ids
= (GArray
*)data
;
762 for(i
=0; i
<fac_ids
->len
; i
++) {
763 fac
= &g_array_index (fac_ids
, LttFacility
, i
);
764 ltt_facility_close(fac
);
767 g_array_free(fac_ids
, TRUE
);
771 /* Presumes the tracefile is already seeked at the beginning. It makes sense,
772 * because it must be done just after the opening */
773 static int ltt_process_facility_tracefile(LttTracefile
*tf
)
780 err
= ltt_tracefile_read_seek(tf
);
781 if(err
== EPERM
) goto seek_error
;
782 else if(err
== ERANGE
) break; /* End of tracefile */
784 err
= ltt_tracefile_read_update_event(tf
);
785 if(err
) goto update_error
;
787 /* We are on a facility load/or facility unload/ or heartbeat event */
789 * * facility 0 is hardcoded : this is the core facility. It will be shown
790 * in the facility array though, and is shown as "loaded builtin" in the
792 * It contains event :
794 * 1 : facility unload
795 * 2 : state dump facility load
796 * Facility 1 : (heartbeat)
799 if(tf
->event
.facility_id
> 1) { /* Should only contain core and heartbeat
801 g_warning("Error in processing facility file %s, "
802 "should not contain facility id %u.", g_quark_to_string(tf
->name
),
803 tf
->event
.facility_id
);
806 } else if(tf
->event
.facility_id
== LTT_FACILITY_CORE
) {
808 struct LttFacilityLoad
*fac_load_data
;
812 switch((enum ltt_core_events
)tf
->event
.event_id
) {
813 case LTT_EVENT_FACILITY_LOAD
:
815 (struct LttFacilityLoad
*)tf
->event
.data
;
817 (char*)(tf
->event
.data
+ sizeof(struct LttFacilityLoad
));
818 fac
= &g_array_index (tf
->trace
->facilities_by_num
, LttFacility
,
819 ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
));
820 g_assert(fac
->exists
== 0);
821 fac
->name
= g_quark_from_string(fac_name
);
822 fac
->checksum
= ltt_get_uint32(LTT_GET_BO(tf
),
823 &fac_load_data
->checksum
);
824 fac
->id
= ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
);
825 fac
->pointer_size
= ltt_get_uint32(LTT_GET_BO(tf
),
826 &fac_load_data
->pointer_size
);
827 fac
->size_t_size
= ltt_get_uint32(LTT_GET_BO(tf
),
828 &fac_load_data
->size_t_size
);
829 fac
->alignment
= ltt_get_uint32(LTT_GET_BO(tf
),
830 &fac_load_data
->alignment
);
832 if(ltt_get_facility_description(fac
, tf
->trace
, tf
))
835 fac
->trace
= tf
->trace
;
838 fac_ids
= g_datalist_id_get_data(&tf
->trace
->facilities_by_name
,
840 if(fac_ids
== NULL
) {
841 fac_ids
= g_array_sized_new (FALSE
, TRUE
, sizeof(guint
), 1);
842 g_datalist_id_set_data_full(&tf
->trace
->facilities_by_name
,
844 fac_ids
, ltt_fac_ids_destroy
);
846 g_array_append_val(fac_ids
, fac
->id
);
849 case LTT_EVENT_FACILITY_UNLOAD
:
850 /* We don't care about unload : facilities ID are valid for the whole
851 * trace. They simply won't be used after the unload. */
853 case LTT_EVENT_STATE_DUMP_FACILITY_LOAD
:
855 (struct LttFacilityLoad
*)tf
->event
.data
;
857 (char*)(tf
->event
.data
+ sizeof(struct LttFacilityLoad
));
858 fac
= &g_array_index (tf
->trace
->facilities_by_num
, LttFacility
,
859 ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
));
860 g_assert(fac
->exists
== 0);
861 fac
->name
= g_quark_from_string(fac_name
);
862 fac
->checksum
= ltt_get_uint32(LTT_GET_BO(tf
),
863 &fac_load_data
->checksum
);
864 fac
->id
= fac_load_data
->id
;
865 fac
->pointer_size
= ltt_get_uint32(LTT_GET_BO(tf
),
866 &fac_load_data
->pointer_size
);
867 fac
->size_t_size
= ltt_get_uint32(LTT_GET_BO(tf
),
868 &fac_load_data
->size_t_size
);
869 fac
->alignment
= ltt_get_uint32(LTT_GET_BO(tf
),
870 &fac_load_data
->alignment
);
871 if(ltt_get_facility_description(fac
, tf
->trace
, tf
))
874 fac
->trace
= tf
->trace
;
878 fac_ids
= g_datalist_id_get_data(&tf
->trace
->facilities_by_name
,
880 if(fac_ids
== NULL
) {
881 fac_ids
= g_array_sized_new (FALSE
, TRUE
, sizeof(guint
), 1);
882 g_datalist_id_set_data_full(&tf
->trace
->facilities_by_name
,
884 fac_ids
, ltt_fac_ids_destroy
);
886 g_array_append_val(fac_ids
, fac
->id
);
889 case LTT_EVENT_HEARTBEAT
:
892 g_warning("Error in processing facility file %s, "
893 "unknown event id %hhu in core facility.",
894 g_quark_to_string(tf
->name
),
913 LttTrace
*ltt_trace_open(const gchar
*pathname
)
915 gchar abs_path
[PATH_MAX
];
921 t
= g_new(LttTrace
, 1);
922 if(!t
) goto alloc_error
;
924 get_absolute_pathname(pathname
, abs_path
);
925 t
->pathname
= g_quark_from_string(abs_path
);
927 /* Open all the tracefiles */
928 g_datalist_init(&t
->tracefiles
);
929 if(open_tracefiles(t
, abs_path
, t
->tracefiles
))
932 /* Prepare the facilities containers : array and mapping */
933 /* Array is zeroed : the "exists" field is set to false by default */
934 t
->facilities_by_num
= g_array_sized_new (FALSE
,
935 TRUE
, sizeof(LttFacility
),
937 t
->facilities_by_num
= g_array_set_size(t
->facilities_by_num
, NUM_FACILITIES
);
939 g_datalist_init(&t
->facilities_by_name
);
941 /* Parse each trace control/facilitiesN files : get runtime fac. info */
942 group
= g_datalist_id_get_data(&t
->tracefiles
, LTT_TRACEFILE_NAME_FACILITIES
);
944 g_error("Trace %s has no facility tracefile", abs_path
);
945 goto facilities_error
;
948 for(i
=0; i
<group
->len
; i
++) {
949 tf
= &g_array_index (group
, LttTracefile
, i
);
950 if(ltt_process_facility_tracefile(tf
))
951 goto facilities_error
;
960 g_datalist_clear(&t
->facilities_by_name
);
961 g_array_free(t
->facilities_by_num
, TRUE
);
963 g_datalist_clear(&t
->tracefiles
);
970 GQuark
ltt_trace_name(LttTrace
*t
)
976 /******************************************************************************
977 * When we copy a trace, we want all the opening actions to happen again :
978 * the trace will be reopened and totally independant from the original.
979 * That's why we call ltt_trace_open.
980 *****************************************************************************/
981 LttTrace
*ltt_trace_copy(LttTrace
*self
)
983 return ltt_trace_open(g_quark_to_string(self
->pathname
));
986 void ltt_trace_close(LttTrace
*t
)
988 g_datalist_clear(&t
->facilities_by_name
);
989 g_array_free(t
->facilities_by_num
, TRUE
);
990 g_datalist_clear(&t
->tracefiles
);
995 /*****************************************************************************
996 *Get the system description of the trace
997 ****************************************************************************/
999 LttFacility
*ltt_trace_facility_by_id(LttTrace
*t
, guint8 id
)
1001 g_assert(id
< t
->facilities_by_num
->len
);
1002 return &g_array_index(t
->facilities_by_num
, LttFacility
, id
);
1005 /* ltt_trace_facility_get_by_name
1007 * Returns the GArray of facility indexes. All the fac_ids that matches the
1008 * requested facility name.
1010 * If name is not found, returns NULL.
1012 GArray
*ltt_trace_facility_get_by_name(LttTrace
*t
, GQuark name
)
1014 return g_datalist_id_get_data(&t
->facilities_by_name
, name
);
1017 /*****************************************************************************
1018 * Functions to discover all the event types in the trace
1019 ****************************************************************************/
1022 unsigned ltt_trace_eventtype_number(LttTrace
*t
)
1026 unsigned int num
= t
->facility_number
;
1030 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
1031 count
+= f
->event_number
;
1038 //use an iteration on all the trace facilities, and inside iteration on all the
1039 //event types in each facilities instead.
1040 LttEventType
*ltt_trace_eventtype_get(LttTrace
*t
, unsigned evId
)
1042 LttEventType
*event_type
;
1045 f
= ltt_trace_facility_by_id(t
,evId
);
1047 if(unlikely(!f
)) event_type
= NULL
;
1048 else event_type
= f
->events
[evId
- f
->base_id
];
1055 /*****************************************************************************
1056 * ltt_trace_find_tracefile
1058 * Find a tracefile by name and index in the group.
1060 * Returns a pointer to the tracefiles, else NULL.
1061 ****************************************************************************/
1063 LttTracefile
*ltt_trace_find_tracefile(LttTrace
*t
, const gchar
*name
)
1068 /*****************************************************************************
1069 * Get the start time and end time of the trace
1070 ****************************************************************************/
1072 static void ltt_tracefile_time_span_get(LttTracefile
*tf
,
1073 LttTime
*start
, LttTime
*end
)
1075 struct ltt_block_start_header
* header
;
1078 err
= map_block(tf
, 0);
1080 g_error("Can not map block");
1081 *start
= ltt_time_infinite
;
1083 *start
= tf
->buffer
.begin
.timestamp
;
1085 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1087 g_error("Can not map block");
1088 *end
= ltt_time_zero
;
1090 *end
= tf
->buffer
.end
.timestamp
;
1093 struct tracefile_time_span_get_args
{
1099 static void group_time_span_get(GQuark name
, gpointer data
, gpointer user_data
)
1101 struct tracefile_time_span_get_args
*args
=
1102 (struct tracefile_time_span_get_args
*)user_data
;
1104 GArray
*group
= (GArray
*)data
;
1110 for(i
=0; i
<group
->len
; i
++) {
1111 tf
= &g_array_index (group
, LttTracefile
, i
);
1112 if(tf
->cpu_online
) {
1113 ltt_tracefile_time_span_get(tf
, &tmp_start
, &tmp_end
);
1114 if(ltt_time_compare(*args
->start
, tmp_start
)>0) *args
->start
= tmp_start
;
1115 if(ltt_time_compare(*args
->end
, tmp_end
)<0) *args
->end
= tmp_end
;
1120 void ltt_trace_time_span_get(LttTrace
*t
, LttTime
*start
, LttTime
*end
)
1122 LttTime min_start
= ltt_time_infinite
;
1123 LttTime max_end
= ltt_time_zero
;
1124 struct tracefile_time_span_get_args args
= { t
, &min_start
, &max_end
};
1126 g_datalist_foreach(&t
->tracefiles
, &group_time_span_get
, &args
);
1128 if(start
!= NULL
) *start
= min_start
;
1129 if(end
!= NULL
) *end
= max_end
;
1134 /*****************************************************************************
1135 *Get the name of a tracefile
1136 ****************************************************************************/
1138 GQuark
ltt_tracefile_name(LttTracefile
*tf
)
1143 /*****************************************************************************
1144 * Get the number of blocks in the tracefile
1145 ****************************************************************************/
1147 guint
ltt_tracefile_block_number(LttTracefile
*tf
)
1149 return tf
->num_blocks
;
1153 /* Seek to the first event in a tracefile that has a time equal or greater than
1154 * the time passed in parameter.
1156 * If the time parameter is outside the tracefile time span, seek to the first
1157 * or the last event of the tracefile.
1159 * If the time parameter is before the first event, we have to seek specially to
1162 * If the time is after the end of the trace, get the last event.
1164 * Do a binary search to find the right block, then a sequential search in the
1165 * block to find the event.
1167 * In the special case where the time requested fits inside a block that has no
1168 * event corresponding to the requested time, the first event of the next block
1171 * IMPORTANT NOTE : // FIXME everywhere...
1173 * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time :
1174 * you will jump over an event if you do.
1176 * Return value : 0 : no error, the tf->event can be used
1177 * otherwise : this is an error.
1181 int ltt_tracefile_seek_time(LttTracefile
*tf
, LttTime time
)
1185 unsigned int block_num
, high
, low
;
1187 /* seek at the beginning of trace */
1188 err
= map_block(tf
, 0); /* First block */
1190 g_error("Can not map block");
1194 /* If the time is lower or equal the beginning of the trace,
1195 * go to the first event. */
1196 if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) <= 0) {
1197 ret
= ltt_tracefile_read(tf
);
1198 goto found
; /* There is either no event in the trace or the event points
1199 to the first event in the trace */
1202 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1204 g_error("Can not map block");
1208 /* If the time is after the end of the trace, get the last event. */
1209 if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) >= 0) {
1210 /* While the ltt_tracefile_read doesn't return ERANGE or EPERM,
1214 ret
= ltt_tracefile_read(tf
);
1215 if(ret
== ERANGE
) goto found
; /* ERANGE or EPERM */
1216 else if(ret
) goto fail
;
1220 /* Binary search the block */
1221 high
= tf
->num_blocks
- 1;
1225 block_num
= ((high
-low
) / 2) + low
;
1227 err
= map_block(tf
, block_num
);
1229 g_error("Can not map block");
1233 /* We cannot divide anymore : this is what would happen if the time
1234 * requested was exactly between two consecutive buffers'end and start
1235 * timestamps. This is also what would happend if we didn't deal with out
1236 * of span cases prior in this function. */
1237 /* The event is right in the buffer!
1238 * (or in the next buffer first event) */
1240 ret
= ltt_tracefile_read(tf
);
1241 if(ret
== ERANGE
) goto found
; /* ERANGE or EPERM */
1242 else if(ret
) goto fail
;
1244 if(ltt_time_compare(time
, tf
->event
.event_time
) >= 0)
1248 } if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) < 0) {
1249 /* go to lower part */
1251 } else if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) > 0) {
1252 /* go to higher part */
1254 } else {/* The event is right in the buffer!
1255 (or in the next buffer first event) */
1257 ltt_tracefile_read(tf
);
1258 if(ret
== ERANGE
) goto found
; /* ERANGE or EPERM */
1259 else if(ret
) goto fail
;
1261 if(ltt_time_compare(time
, tf
->event
.event_time
) >= 0)
1271 /* Error handling */
1273 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1274 g_quark_to_string(tf
->name
));
1279 int ltt_tracefile_seek_position(LttTracefile
*tf
, const LttEventPosition
*ep
) {
1283 if(ep
->tracefile
!= tf
) {
1287 err
= map_block(tf
, ep
->block
);
1289 g_error("Can not map block");
1293 tf
->event
.offset
= ep
->offset
;
1295 err
= ltt_tracefile_read_update_event(tf
);
1297 err
= ltt_tracefile_read_op(tf
);
1303 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1304 g_quark_to_string(tf
->name
));
1307 /* Calculate the real event time based on the buffer boundaries */
1308 LttTime
ltt_interpolate_time(LttTracefile
*tf
, LttEvent
*event
)
1312 g_assert(tf
->trace
->has_tsc
);
1314 time
= ltt_time_from_uint64(
1315 (guint64
)tf
->buffer
.tsc
*tf
->buffer
.nsecs_per_cycle
);
1316 time
= ltt_time_add(tf
->buffer
.begin
.timestamp
, time
);
1322 /* Get the current event of the tracefile : valid until the next read */
1323 LttEvent
*ltt_tracefile_get_event(LttTracefile
*tf
)
1330 /*****************************************************************************
1332 * ltt_tracefile_read : Read the next event in the tracefile
1337 * Returns 0 if an event can be used in tf->event.
1338 * Returns ERANGE on end of trace. The event in tf->event still can be used.
1339 * Returns EPERM on error.
1341 * This function does make the tracefile event structure point to the event
1342 * currently pointed to by the tf->event.
1344 * Note : you must call a ltt_tracefile_seek to the beginning of the trace to
1345 * reinitialize it after an error if you want results to be coherent.
1346 * It would be the case if a end of trace last buffer has no event : the end
1347 * of trace wouldn't be returned, but an error.
1348 * We make the assumption there is at least one event per buffer.
1349 ****************************************************************************/
1351 int ltt_tracefile_read(LttTracefile
*tf
)
1355 err
= ltt_tracefile_read_seek(tf
);
1357 err
= ltt_tracefile_read_update_event(tf
);
1359 err
= ltt_tracefile_read_op(tf
);
1365 int ltt_tracefile_read_seek(LttTracefile
*tf
)
1369 /* Get next buffer until we finally have an event, or end of trace */
1371 err
= ltt_seek_next_event(tf
);
1372 if(unlikely(err
== ENOPROTOOPT
)) {
1376 /* Are we at the end of the buffer ? */
1378 if(unlikely(tf
->buffer
.index
== tf
->num_blocks
-1)){ /* end of trace ? */
1381 /* get next block */
1382 err
= map_block(tf
, tf
->buffer
.index
+ 1);
1384 g_error("Can not map block");
1388 } else break; /* We found an event ! */
1395 /* do specific operation on events */
1396 int ltt_tracefile_read_op(LttTracefile
*tf
)
1405 /* do event specific operation */
1407 /* do something if its an heartbeat event : increment the heartbeat count */
1408 //if(event->facility_id == LTT_FACILITY_CORE)
1409 // if(event->event_id == LTT_EVENT_HEARTBEAT)
1410 // tf->cur_heart_beat_number++;
1416 /* same as ltt_tracefile_read, but does not seek to the next event nor call
1417 * event specific operation. */
1418 int ltt_tracefile_read_update_event(LttTracefile
*tf
)
1426 pos
= tf
->buffer
.head
+ event
->offset
;
1428 /* Read event header */
1432 if(tf
->trace
->has_tsc
) {
1433 event
->time
.timestamp
= ltt_get_uint32(LTT_GET_BO(tf
),
1435 /* 32 bits -> 64 bits tsc */
1436 /* note : still works for seek and non seek cases. */
1437 if(event
->time
.timestamp
< (0xFFFFFFFFULL
&tf
->buffer
.tsc
)) {
1438 tf
->buffer
.tsc
= ((tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1440 | (guint64
)event
->time
.timestamp
;
1441 event
->tsc
= tf
->buffer
.tsc
;
1444 tf
->buffer
.tsc
= (tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1445 | (guint64
)event
->time
.timestamp
;
1446 event
->tsc
= tf
->buffer
.tsc
;
1449 event
->event_time
= ltt_interpolate_time(tf
, event
);
1451 pos
+= sizeof(guint32
);
1453 event
->time
.delta
.tv_sec
= 0;
1454 event
->time
.delta
.tv_nsec
= ltt_get_uint32(LTT_GET_BO(tf
),
1455 pos
) * NSEC_PER_USEC
;
1457 event
->tsc
= tf
->buffer
.tsc
;
1459 event
->event_time
= ltt_time_add(tf
->buffer
.begin
.timestamp
,
1461 pos
+= sizeof(guint32
);
1464 event
->facility_id
= *(guint8
*)pos
;
1465 pos
+= sizeof(guint8
);
1467 event
->event_id
= *(guint8
*)pos
;
1468 pos
+= sizeof(guint8
);
1472 /* get the data size and update the event fields with the current
1474 ltt_update_event_size(tf
);
1480 /****************************************************************************
1482 * map_block : map a block from the file
1484 * lttdes : ltt trace file
1485 * whichBlock : the block which will be read
1488 * EINVAL : lseek fail
1489 * EIO : can not read from the file
1490 ****************************************************************************/
1492 static gint
map_block(LttTracefile
* tf
, guint block_num
)
1494 struct ltt_block_start_header
*header
;
1496 g_assert(block_num
< tf
->num_blocks
);
1498 if(tf
->buffer
.head
!= NULL
)
1499 munmap(tf
->buffer
.head
, tf
->buf_size
);
1501 /* Multiple of pages aligned head */
1502 tf
->buffer
.head
= mmap(0, tf
->block_size
, PROT_READ
, tf
->fd
, MAP_PRIVATE
,
1503 (off_t
)tf
->block_size
* (off_t
)block_num
);
1505 if(tf
->buffer
.head
== NULL
) {
1506 perror("Error in allocating memory for buffer of tracefile");
1509 g_assert(((guint
)tf
->buffer
.head
) & (8-1) == 0); // make sure it's aligned.
1512 tf
->buffer
.index
= block_num
;
1514 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
1516 tf
->buffer
.begin
.timestamp
= ltt_get_time(LTT_GET_BO(tf
),
1517 &header
->begin
.timestamp
);
1518 tf
->buffer
.begin
.timestamp
.tv_nsec
*= NSEC_PER_USEC
;
1519 tf
->buffer
.begin
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1520 &header
->begin
.cycle_count
);
1521 tf
->buffer
.end
.timestamp
= ltt_get_time(LTT_GET_BO(tf
),
1522 &header
->end
.timestamp
);
1523 tf
->buffer
.end
.timestamp
.tv_nsec
*= NSEC_PER_USEC
;
1524 tf
->buffer
.end
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1525 &header
->end
.cycle_count
);
1526 tf
->buffer
.lost_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1527 &header
->lost_size
);
1529 tf
->buffer
.tsc
= tf
->buffer
.begin
.cycle_count
;
1530 tf
->event
.tsc
= tf
->buffer
.tsc
;
1533 * eventually support variable buffer size : will need a partial pre-read of
1534 * the headers to create an index when we open the trace... eventually. */
1535 g_assert(tf
->block_size
== ltt_get_uint32(LTT_GET_BO(tf
),
1536 &header
->buf_size
));
1538 /* Now that the buffer is mapped, calculate the time interpolation for the
1541 tf
->buffer
.nsecs_per_cycle
= calc_nsecs_per_cycle(tf
);
1543 /* Make the current event point to the beginning of the buffer :
1544 * it means that the event read must get the first event. */
1545 tf
->event
.tracefile
= tf
;
1546 tf
->event
.block
= block_num
;
1547 tf
->event
.offset
= 0;
1556 /* It will update the fields offsets too */
1557 void ltt_update_event_size(LttTracefile
*tf
)
1561 /* Specific handling of core events : necessary to read the facility control
1563 LttFacility
*f
= ltt_trace_get_facility_by_num(tf
->trace
,
1564 tf
->event
.facility_id
);
1566 if(unlikely(f
== NULL
)) {
1567 if(likely(tf
->event
.facility_id
== LTT_FACILITY_CORE
)) {
1568 switch((enum ltt_core_events
)tf
->event
.event_id
) {
1569 case LTT_EVENT_FACILITY_LOAD
:
1570 size
= sizeof(struct LttFacilityLoad
);
1572 case LTT_EVENT_FACILITY_UNLOAD
:
1573 size
= sizeof(struct LttFacilityUnload
);
1575 case LTT_EVENT_STATE_DUMP_FACILITY_LOAD
:
1576 size
= sizeof(struct LttStateDumpFacilityLoad
);
1578 case LTT_EVENT_HEARTBEAT
:
1579 size
= sizeof(TimeHeartbeat
);
1582 g_warning("Error in getting event size : tracefile %s, "
1583 "unknown event id %hhu in core facility.",
1584 g_quark_to_string(tf
->name
),
1585 tf
->event
.event_id
);
1586 goto event_id_error
;
1591 LttEventType
*event_type
=
1592 ltt_facility_eventtype_get(f
, tf
->event
.event_id
);
1593 size
= get_field_type_size(tf
, event_type
,
1594 0, 0, event_type
->root_field
, tf
->event
.data
);
1597 tf
->event
.data_size
= size
;
1602 tf
->event
.data_size
= 0;
1606 /* Take the tf current event offset and use the event facility id and event id
1607 * to figure out where is the next event offset.
1609 * This is an internal function not aiming at being used elsewhere : it will
1610 * not jump over the current block limits. Please consider using
1611 * ltt_tracefile_read to do this.
1613 * Returns 0 on success
1614 * ERANGE if we are at the end of the buffer.
1615 * ENOPROTOOPT if an error occured when getting the current event size.
1617 static int ltt_seek_next_event(LttTracefile
*tf
)
1623 /* seek over the buffer header if we are at the buffer start */
1624 if(tf
->event
.offset
== 0) {
1625 tf
->event
.offset
+= sizeof(struct ltt_block_start_header
);
1630 if(tf
->event
.offset
== tf
->buffer
.lost_size
) {
1635 pos
= tf
->event
.data
;
1637 if(tf
->event
.data_size
< 0) goto error
;
1639 pos
+= (size_t)tf
->event
.data_size
;
1641 tf
->event
.offset
= pos
- tf
->buffer
.head
;
1647 g_error("Error in ltt_seek_next_event for tracefile %s",
1648 g_quark_to_string(tf
->name
));
1653 /*****************************************************************************
1655 * calc_nsecs_per_cycle : calculate nsecs per cycle for current block
1658 ****************************************************************************/
1660 static double calc_nsecs_per_cycle(LttTracefile
* tf
)
1662 LttTime lBufTotalTime
; /* Total time for this buffer */
1663 double lBufTotalNSec
; /* Total time for this buffer in nsecs */
1664 LttCycleCount lBufTotalCycle
;/* Total cycles for this buffer */
1666 /* Calculate the total time for this buffer */
1667 lBufTotalTime
= ltt_time_sub(
1668 ltt_get_time(LTT_GET_BO(tf
), &tf
->buffer
.end
.timestamp
),
1669 ltt_get_time(LTT_GET_BO(tf
), &tf
->buffer
.begin
.timestamp
));
1671 /* Calculate the total cycles for this bufffer */
1672 lBufTotalCycle
= ltt_get_uint64(LTT_GET_BO(tf
), &tf
->buffer
.end
.cycle_count
);
1673 lBufTotalCycle
-= ltt_get_uint64(LTT_GET_BO(tf
),
1674 &tf
->buffer
.begin
.cycle_count
);
1676 /* Convert the total time to double */
1677 lBufTotalNSec
= ltt_time_to_double(lBufTotalTime
);
1679 return lBufTotalNSec
/ (double)lBufTotalCycle
;
1683 void setFieldsOffset(LttTracefile
*tf
, LttEventType
*evT
,void *evD
)
1685 LttField
* rootFld
= evT
->root_field
;
1686 // rootFld->base_address = evD;
1689 rootFld
->field_size
= getFieldtypeSize(tf
, evT
->facility
,
1690 evT
, 0,0,rootFld
, evD
);
1694 /*****************************************************************************
1696 * set_fields_offsets : set the precomputable offset of the fields
1698 * tracefile : opened trace file
1699 * event_type : the event type
1700 ****************************************************************************/
1702 void set_fields_offsets(LttTracefile
*tf
, LttEventType
*event_type
)
1704 LttField
*field
= event_type
->root_field
;
1705 enum field_status fixed_root
= FIELD_FIXED
, fixed_parent
= FIELD_FIXED
;
1708 preset_field_type_size(tf
, event_type
, 0, 0,
1709 &fixed_root
, &fixed_parent
,
1715 /*****************************************************************************
1717 * preset_field_type_size : set the fixed sizes of the field type
1720 * event_type : event type
1721 * offset_root : offset from the root
1722 * offset_parent : offset from the parent
1723 * fixed_root : Do we know a fixed offset to the root ?
1724 * fixed_parent : Do we know a fixed offset to the parent ?
1726 ****************************************************************************/
1727 void preset_field_type_size(LttTracefile
*tf
, LttEventType
*event_type
,
1728 off_t offset_root
, off_t offset_parent
,
1729 enum field_status
*fixed_root
, enum field_status
*fixed_parent
,
1732 enum field_status local_fixed_root
, local_fixed_parent
;
1736 g_assert(field
->fixed_root
== FIELD_UNKNOWN
);
1737 g_assert(field
->fixed_parent
== FIELD_UNKNOWN
);
1738 g_assert(field
->fixed_size
== FIELD_UNKNOWN
);
1740 type
= field
->field_type
;
1742 field
->fixed_root
= *fixed_root
;
1743 if(field
->fixed_root
== FIELD_FIXED
)
1744 field
->offset_root
= offset_root
;
1746 field
->offset_root
= 0;
1748 field
->fixed_parent
= *fixed_parent
;
1749 if(field
->fixed_parent
== FIELD_FIXED
)
1750 field
->offset_parent
= offset_parent
;
1752 field
->offset_parent
= 0;
1754 size_t current_root_offset
;
1755 size_t current_offset
;
1756 enum field_status current_child_status
, final_child_status
;
1759 switch(type
->type_class
) {
1764 field
->field_size
= ltt_type_size(tf
->trace
, type
);
1765 field
->fixed_size
= FIELD_FIXED
;
1768 field
->field_size
= (off_t
)event_type
->facility
->pointer_size
;
1769 field
->fixed_size
= FIELD_FIXED
;
1773 field
->field_size
= (off_t
)event_type
->facility
->pointer_size
;
1774 field
->fixed_size
= FIELD_FIXED
;
1779 field
->field_size
= (off_t
)event_type
->facility
->size_t_size
;
1780 field
->fixed_size
= FIELD_FIXED
;
1783 local_fixed_root
= FIELD_VARIABLE
;
1784 local_fixed_parent
= FIELD_VARIABLE
;
1785 preset_field_type_size(tf
, event_type
,
1787 &local_fixed_root
, &local_fixed_parent
,
1789 field
->fixed_size
= FIELD_VARIABLE
;
1790 field
->field_size
= 0;
1793 field
->fixed_size
= FIELD_VARIABLE
;
1794 field
->field_size
= 0;
1797 local_fixed_root
= FIELD_VARIABLE
;
1798 local_fixed_parent
= FIELD_VARIABLE
;
1799 preset_field_type_size(tf
, event_type
,
1801 &local_fixed_root
, &local_fixed_parent
,
1803 field
->fixed_size
= field
->child
[0]->fixed_size
;
1804 if(field
->fixed_size
== FIELD_FIXED
)
1805 field
->field_size
= type
->element_number
* field
->child
[0]->field_size
;
1807 field
->field_size
= 0;
1810 current_root_offset
= field
->offset_root
;
1812 current_child_status
= FIELD_FIXED
;
1813 for(i
=0;i
<type
->element_number
;i
++) {
1814 preset_field_type_size(tf
, event_type
,
1815 current_root_offset
, current_offset
,
1816 fixed_root
, ¤t_child_status
,
1818 if(current_child_status
== FIELD_FIXED
) {
1819 current_root_offset
+= field
->child
[i
]->field_size
;
1820 current_offset
+= field
->child
[i
]->field_size
;
1822 current_root_offset
= 0;
1826 if(current_child_status
!= FIELD_FIXED
) {
1827 *fixed_parent
= current_child_status
;
1828 field
->field_size
= 0;
1829 field
->fixed_size
= current_child_status
;
1831 field
->field_size
= current_offset
;
1832 field
->fixed_size
= FIELD_FIXED
;
1836 current_root_offset
= field
->offset_root
;
1839 final_child_status
= FIELD_FIXED
;
1840 for(i
=0;i
<type
->element_number
;i
++) {
1841 enum field_status current_root_child_status
= FIELD_FIXED
;
1842 enum field_status current_child_status
= FIELD_FIXED
;
1843 preset_field_type_size(tf
, event_type
,
1844 current_root_offset
, current_offset
,
1845 ¤t_root_child_status
, ¤t_child_status
,
1847 if(current_child_status
!= FIELD_FIXED
)
1848 final_child_status
= current_child_status
;
1850 max_size
= max(max_size
, field
->child
[i
]->field_size
);
1852 if(final_child_status
!= FIELD_FIXED
) {
1853 *fixed_root
= final_child_status
;
1854 *fixed_parent
= final_child_status
;
1855 field
->field_size
= 0;
1856 field
->fixed_size
= current_child_status
;
1858 field
->field_size
= max_size
;
1859 field
->fixed_size
= FIELD_FIXED
;
1867 /*****************************************************************************
1869 * check_fields_compatibility : Check for compatibility between two fields :
1870 * do they use the same inner structure ?
1872 * event_type1 : event type
1873 * event_type2 : event type
1876 *Returns : 0 if identical
1878 ****************************************************************************/
1879 gint
check_fields_compatibility(LttEventType
*event_type1
,
1880 LttEventType
*event_type2
,
1881 LttField
*field1
, LttField
*field2
)
1883 guint different
= 0;
1884 enum field_status local_fixed_root
, local_fixed_parent
;
1889 if(field1
== NULL
) {
1890 if(field2
== NULL
) goto end
;
1895 } else if(field2
== NULL
) {
1900 g_assert(field1
->fixed_root
!= FIELD_UNKNOWN
);
1901 g_assert(field2
->fixed_root
!= FIELD_UNKNOWN
);
1902 g_assert(field1
->fixed_parent
!= FIELD_UNKNOWN
);
1903 g_assert(field2
->fixed_parent
!= FIELD_UNKNOWN
);
1904 g_assert(field1
->fixed_size
!= FIELD_UNKNOWN
);
1905 g_assert(field2
->fixed_size
!= FIELD_UNKNOWN
);
1907 type1
= field1
->field_type
;
1908 type2
= field2
->field_type
;
1910 size_t current_root_offset
;
1911 size_t current_offset
;
1912 enum field_status current_child_status
, final_child_status
;
1915 if(type1
->type_class
!= type2
->type_class
) {
1919 if(type1
->element_name
!= type2
->element_name
) {
1924 switch(type1
->type_class
) {
1934 if(field1
->field_size
!= field2
->field_size
) {
1940 if(type1
->element_number
!= type2
->element_number
) {
1944 for(i
=0;i
<type1
->element_number
;i
++) {
1945 if(type1
->enum_strings
[i
] != type2
->enum_strings
[i
]) {
1952 /* Two elements : size and child */
1953 g_assert(type1
->element_number
!= type2
->element_number
);
1954 for(i
=0;i
<type1
->element_number
;i
++) {
1955 if(check_fields_compatibility(event_type1
, event_type2
,
1956 field1
->child
[0], field2
->child
[0])) {
1965 if(field1
->field_size
!= field2
->field_size
) {
1969 /* Two elements : size and child */
1970 g_assert(type1
->element_number
!= type2
->element_number
);
1971 for(i
=0;i
<type1
->element_number
;i
++) {
1972 if(check_fields_compatibility(event_type1
, event_type2
,
1973 field1
->child
[0], field2
->child
[0])) {
1981 if(type1
->element_number
!= type2
->element_number
) {
1985 for(i
=0;i
<type1
->element_number
;i
++) {
1986 if(check_fields_compatibility(event_type1
, event_type2
,
1987 field1
->child
[0], field2
->child
[0])) {
2002 /*****************************************************************************
2004 * getFieldtypeSize: get the size of the field type (primitive type)
2007 * offsetRoot : offset from the root
2008 * offsetParent : offset from the parrent
2010 * evD : event data, it may be NULL
2012 * int : size of the field
2013 ****************************************************************************/
2015 static inline gint
getFieldtypeSize(LttTracefile
*tf
,
2016 LttEventType
* evT
, gint offsetRoot
,
2017 gint offsetParent
, LttField
* fld
, void *evD
)
2019 gint size
, size1
, element_number
, i
, offset1
, offset2
;
2020 LttType
* type
= fld
->field_type
;
2022 /* This likely has been tested with gcov : half of them.. */
2023 if(unlikely(fld
->field_fixed
== 1)){
2025 if(unlikely(fld
== evT
->root_field
)) {
2026 size
= fld
->field_size
;
2027 goto end_getFieldtypeSize
;
2031 /* From gcov profiling : half string, half struct, can we gain something
2032 * from that ? (Mathieu) */
2033 switch(type
->type_class
) {
2035 element_number
= (int) type
->element_number
;
2036 if(fld
->field_fixed
== -1){
2037 size
= getFieldtypeSize(tf
, evT
, offsetRoot
,
2038 0,fld
->child
[0], NULL
);
2039 if(size
== 0){ //has string or sequence
2040 fld
->field_fixed
= 0;
2042 fld
->field_fixed
= 1;
2043 size
*= element_number
;
2045 }else if(fld
->field_fixed
== 0){// has string or sequence
2047 for(i
=0;i
<element_number
;i
++){
2048 size
+= getFieldtypeSize(tf
, evT
, offsetRoot
+size
,size
,
2049 fld
->child
[0], evD
+size
);
2051 }else size
= fld
->field_size
;
2053 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2054 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2060 size1
= (int) ltt_type_size(fac
, type
);
2061 if(fld
->field_fixed
== -1){
2062 fld
->sequ_number_size
= size1
;
2063 fld
->field_fixed
= 0;
2064 size
= getFieldtypeSize(evT
, offsetRoot
,
2065 0,fld
->child
[0], NULL
);
2066 fld
->element_size
= size
;
2068 element_number
= getIntNumber(tf
,size1
,evD
);
2069 type
->element_number
= element_number
;
2070 if(fld
->element_size
> 0){
2071 size
= element_number
* fld
->element_size
;
2072 }else{//sequence has string or sequence
2074 for(i
=0;i
<element_number
;i
++){
2075 size
+= getFieldtypeSize(tf
, evT
,
2076 offsetRoot
+size
+size1
,size
+size1
,
2077 fld
->child
[0], evD
+size
+size1
);
2083 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2084 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2091 if(fld
->field_fixed
== -1){
2092 fld
->field_fixed
= 0;
2094 /* Hope my implementation is faster than strlen (Mathieu) */
2095 char *ptr
=(char*)evD
;
2097 /* from gcov : many many strings are empty, make it the common case.*/
2098 while(unlikely(*ptr
!= '\0')) { size
++; ptr
++; }
2099 //size = ptr - (char*)evD + 1; //include end : '\0'
2101 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2102 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2107 element_number
= (int) type
->element_number
;
2109 /* tested with gcov */
2110 if(unlikely(fld
->field_fixed
== -1)){
2111 offset1
= offsetRoot
;
2113 for(i
=0;i
<element_number
;i
++){
2114 size1
=getFieldtypeSize(tf
, evT
,offset1
,offset2
,
2115 fld
->child
[i
], NULL
);
2116 if(likely(size1
> 0 && size
>= 0)){
2118 if(likely(offset1
>= 0)) offset1
+= size1
;
2126 if(unlikely(size
== -1)){
2127 fld
->field_fixed
= 0;
2129 }else fld
->field_fixed
= 1;
2130 }else if(likely(fld
->field_fixed
== 0)){
2131 offset1
= offsetRoot
;
2133 for(i
=0;unlikely(i
<element_number
);i
++){
2134 size
=getFieldtypeSize(tf
, evT
, offset1
, offset2
,
2135 fld
->child
[i
], evD
+offset2
);
2140 }else size
= fld
->field_size
;
2141 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2142 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2146 if(unlikely(fld
->field_fixed
== -1)){
2147 size
= (int) ltt_type_size(LTT_GET_BO(tf
), type
);
2148 fld
->field_fixed
= 1;
2149 }else size
= fld
->field_size
;
2151 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2152 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2157 fld
->offset_root
= offsetRoot
;
2158 fld
->offset_parent
= offsetParent
;
2159 fld
->field_size
= size
;
2161 end_getFieldtypeSize
:
2167 /*****************************************************************************
2169 * ltt_get_int : get an integer number
2171 * reverse_byte_order: must we reverse the byte order ?
2172 * size : the size of the integer
2173 * ptr : the data pointer
2175 * gint64 : a 64 bits integer
2176 ****************************************************************************/
2178 gint64
ltt_get_int(gboolean reverse_byte_order
, gint size
, void *data
)
2183 case 1: val
= *((gint8
*)data
); break;
2184 case 2: val
= ltt_get_int16(reverse_byte_order
, data
); break;
2185 case 4: val
= ltt_get_int32(reverse_byte_order
, data
); break;
2186 case 8: val
= ltt_get_int64(reverse_byte_order
, data
); break;
2187 default: val
= ltt_get_int64(reverse_byte_order
, data
);
2188 g_critical("get_int : integer size %d unknown", size
);
2195 /*****************************************************************************
2197 * ltt_get_uint : get an unsigned integer number
2199 * reverse_byte_order: must we reverse the byte order ?
2200 * size : the size of the integer
2201 * ptr : the data pointer
2203 * guint64 : a 64 bits unsigned integer
2204 ****************************************************************************/
2206 guint64
ltt_get_uint(gboolean reverse_byte_order
, gint size
, void *data
)
2211 case 1: val
= *((gint8
*)data
); break;
2212 case 2: val
= ltt_get_uint16(reverse_byte_order
, data
); break;
2213 case 4: val
= ltt_get_uint32(reverse_byte_order
, data
); break;
2214 case 8: val
= ltt_get_uint64(reverse_byte_order
, data
); break;
2215 default: val
= ltt_get_uint64(reverse_byte_order
, data
);
2216 g_critical("get_uint : unsigned integer size %d unknown",
2225 /* get the node name of the system */
2227 char * ltt_trace_system_description_node_name (LttSystemDescription
* s
)
2229 return s
->node_name
;
2233 /* get the domain name of the system */
2235 char * ltt_trace_system_description_domain_name (LttSystemDescription
* s
)
2237 return s
->domain_name
;
2241 /* get the description of the system */
2243 char * ltt_trace_system_description_description (LttSystemDescription
* s
)
2245 return s
->description
;
2249 /* get the start time of the trace */
2251 LttTime
ltt_trace_system_description_trace_start_time(LttSystemDescription
*s
)
2253 return s
->trace_start
;
2257 LttTracefile
*ltt_tracefile_new()
2259 return g_new(LttTracefile
, 1);
2262 void ltt_tracefile_destroy(LttTracefile
*tf
)
2267 void ltt_tracefile_copy(LttTracefile
*dest
, const LttTracefile
*src
)
2272 /* Before library loading... */
2274 static void __attribute__((constructor
)) init(void)
2276 LTT_FACILITY_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
2277 LTT_EVENT_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
2279 LTT_TRACEFILE_NAME_FACILITIES
= g_quark_from_string("control/facilities");