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 /* Those macros must be called from within a function where page_size is a known
76 #define PAGE_MASK (~(page_size-1))
77 #define PAGE_ALIGN(addr) (((addr)+page_size-1)&PAGE_MASK)
79 /* obtain the time of an event */
81 static inline LttTime
getEventTime(LttTracefile
* tf
);
84 /* set the offset of the fields belonging to the event,
85 need the information of the archecture */
86 void set_fields_offsets(LttTracefile
*tf
, LttEventType
*event_type
);
87 //size_t get_fields_offsets(LttTracefile *tf, LttEventType *event_type, void *data);
89 /* get the size of the field type according to
90 * The facility size information. */
91 static inline void preset_field_type_size(LttTracefile
*tf
,
92 LttEventType
*event_type
,
93 off_t offset_root
, off_t offset_parent
,
94 enum field_status
*fixed_root
, enum field_status
*fixed_parent
,
97 /* map a fixed size or a block information from the file (fd) */
98 static gint
map_block(LttTracefile
* tf
, guint block_num
);
100 /* calculate nsec per cycles for current block */
101 static double calc_nsecs_per_cycle(LttTracefile
* t
);
103 /* go to the next event */
104 static int ltt_seek_next_event(LttTracefile
*tf
);
106 void ltt_update_event_size(LttTracefile
*tf
);
109 /* Functions to parse system.xml file (using glib xml parser) */
110 static void parser_start_element (GMarkupParseContext __UNUSED__
*context
,
111 const gchar
*element_name
,
112 const gchar
**attribute_names
,
113 const gchar
**attribute_values
,
118 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
119 if(strcmp("system", element_name
)){
120 *error
= g_error_new(G_MARKUP_ERROR
,
122 "This is not system.xml file");
126 while(attribute_names
[i
]){
127 if(strcmp("node_name", attribute_names
[i
])==0){
128 des
->node_name
= g_strdup(attribute_values
[i
]);
129 }else if(strcmp("domainname", attribute_names
[i
])==0){
130 des
->domain_name
= g_strdup(attribute_values
[i
]);
131 }else if(strcmp("cpu", attribute_names
[i
])==0){
132 des
->nb_cpu
= atoi(attribute_values
[i
]);
133 }else if(strcmp("arch_size", attribute_names
[i
])==0){
134 if(strcmp(attribute_values
[i
],"LP32") == 0) des
->size
= LTT_LP32
;
135 else if(strcmp(attribute_values
[i
],"ILP32") == 0) des
->size
= LTT_ILP32
;
136 else if(strcmp(attribute_values
[i
],"LP64") == 0) des
->size
= LTT_LP64
;
137 else if(strcmp(attribute_values
[i
],"ILP64") == 0) des
->size
= LTT_ILP64
;
138 else if(strcmp(attribute_values
[i
],"UNKNOWN") == 0) des
->size
= LTT_UNKNOWN
;
139 }else if(strcmp("endian", attribute_names
[i
])==0){
140 if(strcmp(attribute_values
[i
],"LITTLE_ENDIAN") == 0)
141 des
->endian
= LTT_LITTLE_ENDIAN
;
142 else if(strcmp(attribute_values
[i
],"BIG_ENDIAN") == 0)
143 des
->endian
= LTT_BIG_ENDIAN
;
144 }else if(strcmp("kernel_name", attribute_names
[i
])==0){
145 des
->kernel_name
= g_strdup(attribute_values
[i
]);
146 }else if(strcmp("kernel_release", attribute_names
[i
])==0){
147 des
->kernel_release
= g_strdup(attribute_values
[i
]);
148 }else if(strcmp("kernel_version", attribute_names
[i
])==0){
149 des
->kernel_version
= g_strdup(attribute_values
[i
]);
150 }else if(strcmp("machine", attribute_names
[i
])==0){
151 des
->machine
= g_strdup(attribute_values
[i
]);
152 }else if(strcmp("processor", attribute_names
[i
])==0){
153 des
->processor
= g_strdup(attribute_values
[i
]);
154 }else if(strcmp("hardware_platform", attribute_names
[i
])==0){
155 des
->hardware_platform
= g_strdup(attribute_values
[i
]);
156 }else if(strcmp("operating_system", attribute_names
[i
])==0){
157 des
->operating_system
= g_strdup(attribute_values
[i
]);
158 }else if(strcmp("ltt_major_version", attribute_names
[i
])==0){
159 des
->ltt_major_version
= atoi(attribute_values
[i
]);
160 }else if(strcmp("ltt_minor_version", attribute_names
[i
])==0){
161 des
->ltt_minor_version
= atoi(attribute_values
[i
]);
162 }else if(strcmp("ltt_block_size", attribute_names
[i
])==0){
163 des
->ltt_block_size
= atoi(attribute_values
[i
]);
165 *error
= g_error_new(G_MARKUP_ERROR
,
167 "Not a valid attribute");
174 static void parser_characters (GMarkupParseContext __UNUSED__
*context
,
176 gsize __UNUSED__ text_len
,
178 GError __UNUSED__
**error
)
180 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
181 des
->description
= g_strdup(text
);
184 LttFacility
*ltt_trace_get_facility_by_num(LttTrace
*t
,
187 g_assert(num
< t
->facilities_by_num
->len
);
189 return &g_array_index(t
->facilities_by_num
, LttFacility
, num
);
194 /*****************************************************************************
196 * ltt_tracefile_open : open a trace file, construct a LttTracefile
198 * t : the trace containing the tracefile
199 * fileName : path name of the trace file
200 * tf : the tracefile structure
202 * : 0 for success, -1 otherwise.
203 ****************************************************************************/
205 gint
ltt_tracefile_open(LttTrace
*t
, gchar
* fileName
, LttTracefile
*tf
)
207 struct stat lTDFStat
; /* Trace data file status */
208 struct ltt_block_start_header
*header
;
209 int page_size
= getpagesize();
212 tf
->long_name
= g_quark_from_string(fileName
);
214 tf
->fd
= open(fileName
, O_RDONLY
);
216 g_warning("Unable to open input data file %s\n", fileName
);
220 // Get the file's status
221 if(fstat(tf
->fd
, &lTDFStat
) < 0){
222 g_warning("Unable to get the status of the input data file %s\n", fileName
);
226 // Is the file large enough to contain a trace
227 if(lTDFStat
.st_size
< (off_t
)(sizeof(struct ltt_block_start_header
))){
228 g_print("The input data file %s does not contain a trace\n", fileName
);
232 /* Temporarily map the buffer start header to get trace information */
233 /* Multiple of pages aligned head */
234 tf
->buffer
.head
= mmap(0,
235 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)), PROT_READ
,
236 MAP_PRIVATE
, tf
->fd
, 0);
237 if(tf
->buffer
.head
== MAP_FAILED
) {
238 perror("Error in allocating memory for buffer of tracefile");
241 g_assert( ( (guint
)tf
->buffer
.head
&(8-1) ) == 0); // make sure it's aligned.
243 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
245 if(header
->trace
.magic_number
== LTT_MAGIC_NUMBER
)
247 else if(header
->trace
.magic_number
== LTT_REV_MAGIC_NUMBER
)
249 else /* invalid magic number, bad tracefile ! */
252 //store the size of the file
253 tf
->file_size
= lTDFStat
.st_size
;
254 tf
->buf_size
= ltt_get_uint32(LTT_GET_BO(tf
), &header
->buf_size
);
255 tf
->num_blocks
= tf
->file_size
/ tf
->buf_size
;
257 if(munmap(tf
->buffer
.head
,
258 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)))) {
259 g_warning("unmap size : %u\n",
260 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)));
261 perror("munmap error");
264 tf
->buffer
.head
= NULL
;
266 //read the first block
267 if(map_block(tf
,0)) {
268 perror("Cannot map block for tracefile");
276 if(munmap(tf
->buffer
.head
,
277 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)))) {
278 g_warning("unmap size : %u\n",
279 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)));
280 perror("munmap error");
289 LttTrace
*ltt_tracefile_get_trace(LttTracefile
*tf
)
295 /*****************************************************************************
296 *Open control and per cpu tracefiles
297 ****************************************************************************/
299 void ltt_tracefile_open_cpu(LttTrace
*t
, gchar
* tracefile_name
)
302 tf
= ltt_tracefile_open(t
,tracefile_name
);
304 t
->per_cpu_tracefile_number
++;
305 g_ptr_array_add(t
->per_cpu_tracefiles
, tf
);
308 gint
ltt_tracefile_open_control(LttTrace
*t
, gchar
* control_name
)
317 tf
= ltt_tracefile_open(t
,control_name
);
319 g_warning("ltt_tracefile_open_control : bad file descriptor");
322 t
->control_tracefile_number
++;
323 g_ptr_array_add(t
->control_tracefiles
,tf
);
325 //parse facilities tracefile to get base_id
326 if(strcmp(&control_name
[strlen(control_name
)-10],"facilities") ==0){
328 if(!ltt_tracefile_read(tf
,&ev
)) return 0; // end of file
330 if(ev
.event_id
== TRACE_FACILITY_LOAD
){
332 fLoad
.name
= (gchar
*)pos
;
333 fLoad
.checksum
= *(LttChecksum
*)(pos
+ strlen(fLoad
.name
));
334 fLoad
.base_code
= *(guint32
*)(pos
+ strlen(fLoad
.name
) + sizeof(LttChecksum
));
336 for(i
=0;i
<t
->facility_number
;i
++){
337 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
338 if(strcmp(f
->name
,fLoad
.name
)==0 && fLoad
.checksum
==f
->checksum
){
339 f
->base_id
= fLoad
.base_code
;
343 if(i
==t
->facility_number
) {
344 g_warning("Facility: %s, checksum: %u is not found",
345 fLoad
.name
,(unsigned int)fLoad
.checksum
);
348 }else if(ev
.event_id
== TRACE_BLOCK_START
){
350 }else if(ev
.event_id
== TRACE_BLOCK_END
){
353 g_warning("Not valid facilities trace file");
362 /*****************************************************************************
364 * ltt_tracefile_close: close a trace file,
366 * t : tracefile which will be closed
367 ****************************************************************************/
369 void ltt_tracefile_close(LttTracefile
*t
)
371 int page_size
= getpagesize();
373 if(t
->buffer
.head
!= NULL
)
374 if(munmap(t
->buffer
.head
, PAGE_ALIGN(t
->buf_size
))) {
375 g_warning("unmap size : %u\n",
376 PAGE_ALIGN(t
->buf_size
));
377 perror("munmap error");
385 /*****************************************************************************
386 *Get system information
387 ****************************************************************************/
389 gint
getSystemInfo(LttSystemDescription
* des
, gchar
* pathname
)
396 GMarkupParseContext
* context
;
397 GError
* error
= NULL
;
398 GMarkupParser markup_parser
=
400 parser_start_element
,
403 NULL
, /* passthrough */
407 fd
= g_open(pathname
, O_RDONLY
, 0);
409 g_warning("Can not open file : %s\n", pathname
);
413 iochan
= g_io_channel_unix_new(fd
);
415 context
= g_markup_parse_context_new(&markup_parser
, 0, des
,NULL
);
417 //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){
418 while(g_io_channel_read_line(iochan
, &buf
, &length
, NULL
, &error
)
419 != G_IO_STATUS_EOF
) {
422 g_warning("Can not read xml file: \n%s\n", error
->message
);
425 if(!g_markup_parse_context_parse(context
, buf
, length
, &error
)){
427 g_warning("Can not parse xml file: \n%s\n", error
->message
);
430 g_markup_parse_context_free(context
);
432 g_io_channel_shutdown(iochan
, FALSE
, &error
); /* No flush */
434 g_warning("Can not close file: \n%s\n", error
->message
);
442 g_markup_parse_context_free(context
);
444 g_io_channel_shutdown(iochan
, FALSE
, &error
); /* No flush */
446 g_warning("Can not close file: \n%s\n", error
->message
);
457 /*****************************************************************************
458 *The following functions get facility/tracefile information
459 ****************************************************************************/
461 gint
getFacilityInfo(LttTrace
*t
, gchar
* eventdefs
)
468 gchar fullname
[DIR_NAME_SIZE
];
469 GError
* error
= NULL
;
471 dir
= g_dir_open(eventdefs
, 0, &error
);
474 g_warning("Can not open directory: %s, %s\n", eventdefs
, error
->message
);
479 while((name
= g_dir_read_name(dir
)) != NULL
){
480 if(!g_pattern_match_simple("*.xml", name
)) continue;
481 strcpy(fullname
,eventdefs
);
482 strcat(fullname
,name
);
483 ltt_facility_open(t
,fullname
);
487 for(j
=0;j
<t
->facility_number
;j
++){
488 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, j
);
489 for(i
=0; i
<f
->event_number
; i
++){
491 setFieldsOffset(NULL
, et
, NULL
, t
);
498 /*****************************************************************************
499 *A trace is specified as a pathname to the directory containing all the
500 *associated data (control tracefiles, per cpu tracefiles, event
503 *When a trace is closed, all the associated facilities, types and fields
504 *are released as well.
508 /****************************************************************************
509 * get_absolute_pathname
511 * return the unique pathname in the system
513 * MD : Fixed this function so it uses realpath, dealing well with
514 * forgotten cases (.. were not used correctly before).
516 ****************************************************************************/
517 void get_absolute_pathname(const gchar
*pathname
, gchar
* abs_pathname
)
519 abs_pathname
[0] = '\0';
521 if ( realpath (pathname
, abs_pathname
) != NULL
)
525 /* error, return the original path unmodified */
526 strcpy(abs_pathname
, pathname
);
532 /* Search for something like : .*_.*
534 * The left side is the name, the right side is the number.
537 int get_tracefile_name_number(const gchar
*raw_name
,
541 guint raw_name_len
= strlen(raw_name
);
542 gchar char_name
[PATH_MAX
];
549 for(i
=raw_name_len
-1;i
>=0;i
--) {
550 if(raw_name
[i
] == '_') break;
552 if(i
==0) /* Either not found or name length is 0 */
556 cpu_num
= strtol(raw_name
+underscore_pos
+1, &endptr
, 10);
558 if(endptr
== raw_name
+underscore_pos
+1)
559 return -1; /* No digit */
560 if(cpu_num
== LONG_MIN
|| cpu_num
== LONG_MAX
)
561 return -1; /* underflow / overflow */
563 strncpy(char_name
, raw_name
, underscore_pos
);
565 char_name
[underscore_pos
] = '\0';
567 *name
= g_quark_from_string(char_name
);
574 GData
**ltt_trace_get_tracefiles_groups(LttTrace
*trace
)
576 return &trace
->tracefiles
;
580 void compute_tracefile_group(GQuark key_id
,
582 struct compute_tracefile_group_args
*args
)
587 for(i
=0; i
<group
->len
; i
++) {
588 tf
= &g_array_index (group
, LttTracefile
, i
);
590 args
->func(tf
, args
->func_args
);
595 void ltt_tracefile_group_destroy(gpointer data
)
597 GArray
*group
= (GArray
*)data
;
601 for(i
=0; i
<group
->len
; i
++) {
602 tf
= &g_array_index (group
, LttTracefile
, i
);
604 ltt_tracefile_close(tf
);
606 g_array_free(group
, TRUE
);
609 gboolean
ltt_tracefile_group_has_cpu_online(gpointer data
)
611 GArray
*group
= (GArray
*)data
;
615 for(i
=0; i
<group
->len
; i
++) {
616 tf
= &g_array_index (group
, LttTracefile
, i
);
617 if(tf
->cpu_online
) return 1;
623 /* Open each tracefile under a specific directory. Put them in a
624 * GData : permits to access them using their tracefile group pathname.
625 * i.e. access control/modules tracefile group by index :
628 * relative path is the path relative to the trace root
629 * root path is the full path
631 * A tracefile group is simply an array where all the per cpu tracefiles sits.
634 static int open_tracefiles(LttTrace
*trace
, gchar
*root_path
,
635 gchar
*relative_path
)
637 DIR *dir
= opendir(root_path
);
638 struct dirent
*entry
;
639 struct stat stat_buf
;
642 gchar path
[PATH_MAX
];
647 gchar rel_path
[PATH_MAX
];
656 strncpy(path
, root_path
, PATH_MAX
-1);
657 path_len
= strlen(path
);
658 path
[path_len
] = '/';
660 path_ptr
= path
+ path_len
;
662 strncpy(rel_path
, relative_path
, PATH_MAX
-1);
663 rel_path_len
= strlen(rel_path
);
664 rel_path
[rel_path_len
] = '/';
666 rel_path_ptr
= rel_path
+ rel_path_len
;
668 while((entry
= readdir(dir
)) != NULL
) {
670 if(entry
->d_name
[0] == '.') continue;
672 strncpy(path_ptr
, entry
->d_name
, PATH_MAX
- path_len
);
673 strncpy(rel_path_ptr
, entry
->d_name
, PATH_MAX
- rel_path_len
);
675 ret
= stat(path
, &stat_buf
);
681 g_debug("Tracefile file or directory : %s\n", path
);
683 if(S_ISDIR(stat_buf
.st_mode
)) {
685 g_debug("Entering subdirectory...\n");
686 ret
= open_tracefiles(trace
, path
, rel_path
);
687 if(ret
< 0) continue;
688 } else if(S_ISREG(stat_buf
.st_mode
)) {
695 if(get_tracefile_name_number(rel_path
, &name
, &num
))
696 continue; /* invalid name */
698 g_debug("Opening file.\n");
699 if(ltt_tracefile_open(trace
, path
, &tmp_tf
)) {
700 g_info("Error opening tracefile %s", path
);
702 continue; /* error opening the tracefile : bad magic number ? */
705 g_debug("Tracefile name is %s and number is %u",
706 g_quark_to_string(name
), num
);
708 tmp_tf
.cpu_online
= 1;
709 tmp_tf
.cpu_num
= num
;
712 group
= g_datalist_id_get_data(&trace
->tracefiles
, name
);
714 /* Elements are automatically cleared when the array is allocated.
715 * It makes the cpu_online variable set to 0 : cpu offline, by default.
717 group
= g_array_sized_new (FALSE
, TRUE
, sizeof(LttTracefile
), 10);
718 g_datalist_id_set_data_full(&trace
->tracefiles
, name
,
719 group
, ltt_tracefile_group_destroy
);
722 /* Add the per cpu tracefile to the named group */
723 unsigned int old_len
= group
->len
;
725 group
= g_array_set_size(group
, num
+1);
726 g_array_index (group
, LttTracefile
, num
) = tmp_tf
;
736 /* ltt_get_facility_description
738 * Opens the trace corresponding to the requested facility (identified by fac_id
741 * The name searched is : %trace root%/eventdefs/facname_checksum.xml
743 * Returns 0 on success, or 1 on failure.
746 static int ltt_get_facility_description(LttFacility
*f
,
748 LttTracefile
*fac_tf
)
750 char desc_file_name
[PATH_MAX
];
755 text
= g_quark_to_string(t
->pathname
);
756 textlen
= strlen(text
);
758 if(textlen
>= PATH_MAX
) goto name_error
;
759 strcpy(desc_file_name
, text
);
761 text
= "/eventdefs/";
762 textlen
+=strlen(text
);
763 if(textlen
>= PATH_MAX
) goto name_error
;
764 strcat(desc_file_name
, text
);
766 text
= g_quark_to_string(f
->name
);
767 textlen
+=strlen(text
);
768 if(textlen
>= PATH_MAX
) goto name_error
;
769 strcat(desc_file_name
, text
);
772 textlen
+=strlen(text
);
773 if(textlen
>= PATH_MAX
) goto name_error
;
774 strcat(desc_file_name
, text
);
776 err
= snprintf(desc_file_name
+textlen
, PATH_MAX
-textlen
-1,
778 if(err
< 0) goto name_error
;
780 textlen
=strlen(desc_file_name
);
783 textlen
+=strlen(text
);
784 if(textlen
>= PATH_MAX
) goto name_error
;
785 strcat(desc_file_name
, text
);
787 err
= ltt_facility_open(f
, t
, desc_file_name
);
788 if(err
) goto facility_error
;
797 static void ltt_fac_ids_destroy(gpointer data
)
799 GArray
*fac_ids
= (GArray
*)data
;
801 g_array_free(fac_ids
, TRUE
);
805 /* Presumes the tracefile is already seeked at the beginning. It makes sense,
806 * because it must be done just after the opening */
807 static int ltt_process_facility_tracefile(LttTracefile
*tf
)
816 err
= ltt_tracefile_read_seek(tf
);
817 if(err
== EPERM
) goto seek_error
;
818 else if(err
== ERANGE
) break; /* End of tracefile */
820 err
= ltt_tracefile_read_update_event(tf
);
821 if(err
) goto update_error
;
823 /* We are on a facility load/or facility unload/ or heartbeat event */
825 * * facility 0 is hardcoded : this is the core facility. It will be shown
826 * in the facility array though, and is shown as "loaded builtin" in the
828 * It contains event :
830 * 1 : facility unload
831 * 2 : state dump facility load
834 if(tf
->event
.facility_id
!= LTT_FACILITY_CORE
) {
835 /* Should only contain core facility */
836 g_warning("Error in processing facility file %s, "
837 "should not contain facility id %u.", g_quark_to_string(tf
->name
),
838 tf
->event
.facility_id
);
843 struct LttFacilityLoad
*fac_load_data
;
844 struct LttStateDumpFacilityLoad
*fac_state_dump_load_data
;
848 switch((enum ltt_core_events
)tf
->event
.event_id
) {
849 case LTT_EVENT_FACILITY_LOAD
:
850 fac_name
= (char*)(tf
->event
.data
);
851 g_debug("Doing LTT_EVENT_FACILITY_LOAD of facility %s",
854 (struct LttFacilityLoad
*)
855 (tf
->event
.data
+ strlen(fac_name
) + 1);
856 fac
= &g_array_index (tf
->trace
->facilities_by_num
, LttFacility
,
857 ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
));
858 g_assert(fac
->exists
== 0);
859 fac
->name
= g_quark_from_string(fac_name
);
860 fac
->checksum
= ltt_get_uint32(LTT_GET_BO(tf
),
861 &fac_load_data
->checksum
);
862 fac
->id
= ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
);
863 fac
->pointer_size
= ltt_get_uint32(LTT_GET_BO(tf
),
864 &fac_load_data
->pointer_size
);
865 fac
->long_size
= ltt_get_uint32(LTT_GET_BO(tf
),
866 &fac_load_data
->long_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
);
872 if(ltt_get_facility_description(fac
, tf
->trace
, tf
))
873 continue; /* error opening description */
875 fac
->trace
= tf
->trace
;
877 /* Preset the field offsets */
878 for(i
=0; i
<fac
->events
->len
; i
++){
879 et
= &g_array_index(fac
->events
, LttEventType
, i
);
880 set_fields_offsets(tf
, et
);
885 fac_ids
= g_datalist_id_get_data(&tf
->trace
->facilities_by_name
,
887 if(fac_ids
== NULL
) {
888 fac_ids
= g_array_sized_new (FALSE
, TRUE
, sizeof(guint
), 1);
889 g_datalist_id_set_data_full(&tf
->trace
->facilities_by_name
,
891 fac_ids
, ltt_fac_ids_destroy
);
893 g_array_append_val(fac_ids
, fac
->id
);
896 case LTT_EVENT_FACILITY_UNLOAD
:
897 g_debug("Doing LTT_EVENT_FACILITY_UNLOAD");
898 /* We don't care about unload : facilities ID are valid for the whole
899 * trace. They simply won't be used after the unload. */
901 case LTT_EVENT_STATE_DUMP_FACILITY_LOAD
:
902 fac_name
= (char*)(tf
->event
.data
);
903 g_debug("Doing LTT_EVENT_STATE_DUMP_FACILITY_LOAD of facility %s",
905 fac_state_dump_load_data
=
906 (struct LttStateDumpFacilityLoad
*)
907 (tf
->event
.data
+ strlen(fac_name
) + 1);
908 fac
= &g_array_index (tf
->trace
->facilities_by_num
, LttFacility
,
909 ltt_get_uint32(LTT_GET_BO(tf
), &fac_state_dump_load_data
->id
));
910 g_assert(fac
->exists
== 0);
911 fac
->name
= g_quark_from_string(fac_name
);
912 fac
->checksum
= ltt_get_uint32(LTT_GET_BO(tf
),
913 &fac_state_dump_load_data
->checksum
);
914 fac
->id
= fac_state_dump_load_data
->id
;
915 fac
->pointer_size
= ltt_get_uint32(LTT_GET_BO(tf
),
916 &fac_state_dump_load_data
->pointer_size
);
917 fac
->long_size
= ltt_get_uint32(LTT_GET_BO(tf
),
918 &fac_state_dump_load_data
->long_size
);
919 fac
->size_t_size
= ltt_get_uint32(LTT_GET_BO(tf
),
920 &fac_state_dump_load_data
->size_t_size
);
921 fac
->alignment
= ltt_get_uint32(LTT_GET_BO(tf
),
922 &fac_state_dump_load_data
->alignment
);
923 if(ltt_get_facility_description(fac
, tf
->trace
, tf
))
924 continue; /* error opening description */
926 fac
->trace
= tf
->trace
;
928 /* Preset the field offsets */
929 for(i
=0; i
<fac
->events
->len
; i
++){
930 et
= &g_array_index(fac
->events
, LttEventType
, i
);
931 set_fields_offsets(tf
, et
);
936 fac_ids
= g_datalist_id_get_data(&tf
->trace
->facilities_by_name
,
938 if(fac_ids
== NULL
) {
939 fac_ids
= g_array_sized_new (FALSE
, TRUE
, sizeof(guint
), 1);
940 g_datalist_id_set_data_full(&tf
->trace
->facilities_by_name
,
942 fac_ids
, ltt_fac_ids_destroy
);
944 g_array_append_val(fac_ids
, fac
->id
);
947 case LTT_EVENT_HEARTBEAT
:
950 g_warning("Error in processing facility file %s, "
951 "unknown event id %hhu in core facility.",
952 g_quark_to_string(tf
->name
),
967 g_warning("An error occured in facility tracefile parsing");
972 LttTrace
*ltt_trace_open(const gchar
*pathname
)
974 gchar abs_path
[PATH_MAX
];
979 struct ltt_block_start_header
*header
;
981 t
= g_new(LttTrace
, 1);
982 if(!t
) goto alloc_error
;
984 get_absolute_pathname(pathname
, abs_path
);
985 t
->pathname
= g_quark_from_string(abs_path
);
987 /* Open all the tracefiles */
988 g_datalist_init(&t
->tracefiles
);
989 if(open_tracefiles(t
, abs_path
, "")) {
990 g_warning("Error opening tracefile %s", abs_path
);
994 /* Prepare the facilities containers : array and mapping */
995 /* Array is zeroed : the "exists" field is set to false by default */
996 t
->facilities_by_num
= g_array_sized_new (FALSE
,
997 TRUE
, sizeof(LttFacility
),
999 t
->facilities_by_num
= g_array_set_size(t
->facilities_by_num
, NUM_FACILITIES
);
1001 g_datalist_init(&t
->facilities_by_name
);
1003 /* Parse each trace control/facilitiesN files : get runtime fac. info */
1004 group
= g_datalist_id_get_data(&t
->tracefiles
, LTT_TRACEFILE_NAME_FACILITIES
);
1006 g_error("Trace %s has no facility tracefile", abs_path
);
1008 goto facilities_error
;
1011 /* Get the trace information for the control/facility 0 tracefile */
1012 g_assert(group
->len
> 0);
1013 tf
= &g_array_index (group
, LttTracefile
, 0);
1014 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
1015 t
->arch_type
= ltt_get_uint32(LTT_GET_BO(tf
), &header
->trace
.arch_type
);
1016 t
->arch_variant
= ltt_get_uint32(LTT_GET_BO(tf
), &header
->trace
.arch_variant
);
1017 t
->arch_size
= header
->trace
.arch_size
;
1018 t
->ltt_major_version
= header
->trace
.major_version
;
1019 t
->ltt_minor_version
= header
->trace
.minor_version
;
1020 t
->flight_recorder
= header
->trace
.flight_recorder
;
1021 t
->has_heartbeat
= header
->trace
.has_heartbeat
;
1022 t
->has_alignment
= header
->trace
.has_alignment
;
1023 t
->has_tsc
= header
->trace
.has_tsc
;
1026 for(i
=0; i
<group
->len
; i
++) {
1027 tf
= &g_array_index (group
, LttTracefile
, i
);
1028 if(ltt_process_facility_tracefile(tf
))
1029 goto facilities_error
;
1034 /* Error handling */
1036 g_datalist_clear(&t
->facilities_by_name
);
1037 g_array_free(t
->facilities_by_num
, TRUE
);
1039 g_datalist_clear(&t
->tracefiles
);
1046 GQuark
ltt_trace_name(LttTrace
*t
)
1052 /******************************************************************************
1053 * When we copy a trace, we want all the opening actions to happen again :
1054 * the trace will be reopened and totally independant from the original.
1055 * That's why we call ltt_trace_open.
1056 *****************************************************************************/
1057 LttTrace
*ltt_trace_copy(LttTrace
*self
)
1059 return ltt_trace_open(g_quark_to_string(self
->pathname
));
1062 void ltt_trace_close(LttTrace
*t
)
1067 for(i
=0; i
<t
->facilities_by_num
->len
; i
++) {
1068 fac
= &g_array_index (t
->facilities_by_num
, LttFacility
, i
);
1070 ltt_facility_close(fac
);
1073 g_datalist_clear(&t
->facilities_by_name
);
1074 g_array_free(t
->facilities_by_num
, TRUE
);
1075 g_datalist_clear(&t
->tracefiles
);
1080 /*****************************************************************************
1081 *Get the system description of the trace
1082 ****************************************************************************/
1084 LttFacility
*ltt_trace_facility_by_id(LttTrace
*t
, guint8 id
)
1086 g_assert(id
< t
->facilities_by_num
->len
);
1087 return &g_array_index(t
->facilities_by_num
, LttFacility
, id
);
1090 /* ltt_trace_facility_get_by_name
1092 * Returns the GArray of facility indexes. All the fac_ids that matches the
1093 * requested facility name.
1095 * If name is not found, returns NULL.
1097 GArray
*ltt_trace_facility_get_by_name(LttTrace
*t
, GQuark name
)
1099 return g_datalist_id_get_data(&t
->facilities_by_name
, name
);
1102 /*****************************************************************************
1103 * Functions to discover all the event types in the trace
1104 ****************************************************************************/
1107 unsigned ltt_trace_eventtype_number(LttTrace
*t
)
1111 unsigned int num
= t
->facility_number
;
1115 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
1116 count
+= f
->event_number
;
1123 //use an iteration on all the trace facilities, and inside iteration on all the
1124 //event types in each facilities instead.
1125 LttEventType
*ltt_trace_eventtype_get(LttTrace
*t
, unsigned evId
)
1127 LttEventType
*event_type
;
1130 f
= ltt_trace_facility_by_id(t
,evId
);
1132 if(unlikely(!f
)) event_type
= NULL
;
1133 else event_type
= f
->events
[evId
- f
->base_id
];
1140 /*****************************************************************************
1141 * ltt_trace_find_tracefile
1143 * Find a tracefile by name and index in the group.
1145 * Returns a pointer to the tracefiles, else NULL.
1146 ****************************************************************************/
1148 LttTracefile
*ltt_trace_find_tracefile(LttTrace
*t
, const gchar
*name
)
1153 /*****************************************************************************
1154 * Get the start time and end time of the trace
1155 ****************************************************************************/
1157 static void ltt_tracefile_time_span_get(LttTracefile
*tf
,
1158 LttTime
*start
, LttTime
*end
)
1160 struct ltt_block_start_header
* header
;
1163 err
= map_block(tf
, 0);
1165 g_error("Can not map block");
1166 *start
= ltt_time_infinite
;
1168 *start
= tf
->buffer
.begin
.timestamp
;
1170 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1172 g_error("Can not map block");
1173 *end
= ltt_time_zero
;
1175 *end
= tf
->buffer
.end
.timestamp
;
1178 struct tracefile_time_span_get_args
{
1184 static void group_time_span_get(GQuark name
, gpointer data
, gpointer user_data
)
1186 struct tracefile_time_span_get_args
*args
=
1187 (struct tracefile_time_span_get_args
*)user_data
;
1189 GArray
*group
= (GArray
*)data
;
1195 for(i
=0; i
<group
->len
; i
++) {
1196 tf
= &g_array_index (group
, LttTracefile
, i
);
1197 if(tf
->cpu_online
) {
1198 ltt_tracefile_time_span_get(tf
, &tmp_start
, &tmp_end
);
1199 if(ltt_time_compare(*args
->start
, tmp_start
)>0) *args
->start
= tmp_start
;
1200 if(ltt_time_compare(*args
->end
, tmp_end
)<0) *args
->end
= tmp_end
;
1205 void ltt_trace_time_span_get(LttTrace
*t
, LttTime
*start
, LttTime
*end
)
1207 LttTime min_start
= ltt_time_infinite
;
1208 LttTime max_end
= ltt_time_zero
;
1209 struct tracefile_time_span_get_args args
= { t
, &min_start
, &max_end
};
1211 g_datalist_foreach(&t
->tracefiles
, &group_time_span_get
, &args
);
1213 if(start
!= NULL
) *start
= min_start
;
1214 if(end
!= NULL
) *end
= max_end
;
1219 /*****************************************************************************
1220 *Get the name of a tracefile
1221 ****************************************************************************/
1223 GQuark
ltt_tracefile_name(LttTracefile
*tf
)
1229 guint
ltt_tracefile_num(LttTracefile
*tf
)
1234 /*****************************************************************************
1235 * Get the number of blocks in the tracefile
1236 ****************************************************************************/
1238 guint
ltt_tracefile_block_number(LttTracefile
*tf
)
1240 return tf
->num_blocks
;
1244 /* Seek to the first event in a tracefile that has a time equal or greater than
1245 * the time passed in parameter.
1247 * If the time parameter is outside the tracefile time span, seek to the first
1248 * event or if after, return ERANGE.
1250 * If the time parameter is before the first event, we have to seek specially to
1253 * If the time is after the end of the trace, return ERANGE.
1255 * Do a binary search to find the right block, then a sequential search in the
1256 * block to find the event.
1258 * In the special case where the time requested fits inside a block that has no
1259 * event corresponding to the requested time, the first event of the next block
1262 * IMPORTANT NOTE : // FIXME everywhere...
1264 * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time :
1265 * you will jump over an event if you do.
1267 * Return value : 0 : no error, the tf->event can be used
1268 * ERANGE : time if after the last event of the trace
1269 * otherwise : this is an error.
1273 int ltt_tracefile_seek_time(LttTracefile
*tf
, LttTime time
)
1277 unsigned int block_num
, high
, low
;
1279 /* seek at the beginning of trace */
1280 err
= map_block(tf
, 0); /* First block */
1282 g_error("Can not map block");
1286 /* If the time is lower or equal the beginning of the trace,
1287 * go to the first event. */
1288 if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) <= 0) {
1289 ret
= ltt_tracefile_read(tf
);
1290 if(ret
== ERANGE
) goto range
;
1291 else if (ret
) goto fail
;
1292 goto found
; /* There is either no event in the trace or the event points
1293 to the first event in the trace */
1296 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1298 g_error("Can not map block");
1302 /* If the time is after the end of the trace, return ERANGE. */
1303 if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) > 0) {
1307 /* Binary search the block */
1308 high
= tf
->num_blocks
- 1;
1312 block_num
= ((high
-low
) / 2) + low
;
1314 err
= map_block(tf
, block_num
);
1316 g_error("Can not map block");
1320 /* We cannot divide anymore : this is what would happen if the time
1321 * requested was exactly between two consecutive buffers'end and start
1322 * timestamps. This is also what would happend if we didn't deal with out
1323 * of span cases prior in this function. */
1324 /* The event is right in the buffer!
1325 * (or in the next buffer first event) */
1327 ret
= ltt_tracefile_read(tf
);
1328 if(ret
== ERANGE
) goto range
; /* ERANGE or EPERM */
1329 else if(ret
) goto fail
;
1331 if(ltt_time_compare(time
, tf
->event
.event_time
) >= 0)
1335 } else if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) < 0) {
1336 /* go to lower part */
1338 } else if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) > 0) {
1339 /* go to higher part */
1341 } else {/* The event is right in the buffer!
1342 (or in the next buffer first event) */
1344 ret
= ltt_tracefile_read(tf
);
1345 if(ret
== ERANGE
) goto range
; /* ERANGE or EPERM */
1346 else if(ret
) goto fail
;
1348 if(ltt_time_compare(time
, tf
->event
.event_time
) >= 0)
1360 /* Error handling */
1362 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1363 g_quark_to_string(tf
->name
));
1368 int ltt_tracefile_seek_position(LttTracefile
*tf
, const LttEventPosition
*ep
) {
1372 if(ep
->tracefile
!= tf
) {
1376 err
= map_block(tf
, ep
->block
);
1378 g_error("Can not map block");
1382 tf
->event
.offset
= ep
->offset
;
1384 err
= ltt_tracefile_read_update_event(tf
);
1386 err
= ltt_tracefile_read_op(tf
);
1392 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1393 g_quark_to_string(tf
->name
));
1396 /* Calculate the real event time based on the buffer boundaries */
1397 LttTime
ltt_interpolate_time(LttTracefile
*tf
, LttEvent
*event
)
1401 g_assert(tf
->trace
->has_tsc
);
1403 time
= ltt_time_from_uint64(
1404 (guint64
)(tf
->buffer
.tsc
- tf
->buffer
.begin
.cycle_count
) *
1405 tf
->buffer
.nsecs_per_cycle
);
1406 time
= ltt_time_add(tf
->buffer
.begin
.timestamp
, time
);
1412 /* Get the current event of the tracefile : valid until the next read */
1413 LttEvent
*ltt_tracefile_get_event(LttTracefile
*tf
)
1420 /*****************************************************************************
1422 * ltt_tracefile_read : Read the next event in the tracefile
1427 * Returns 0 if an event can be used in tf->event.
1428 * Returns ERANGE on end of trace. The event in tf->event still can be used
1429 * (if the last block was not empty).
1430 * Returns EPERM on error.
1432 * This function does make the tracefile event structure point to the event
1433 * currently pointed to by the tf->event.
1435 * Note : you must call a ltt_tracefile_seek to the beginning of the trace to
1436 * reinitialize it after an error if you want results to be coherent.
1437 * It would be the case if a end of trace last buffer has no event : the end
1438 * of trace wouldn't be returned, but an error.
1439 * We make the assumption there is at least one event per buffer.
1440 ****************************************************************************/
1442 int ltt_tracefile_read(LttTracefile
*tf
)
1446 err
= ltt_tracefile_read_seek(tf
);
1448 err
= ltt_tracefile_read_update_event(tf
);
1450 err
= ltt_tracefile_read_op(tf
);
1456 int ltt_tracefile_read_seek(LttTracefile
*tf
)
1460 /* Get next buffer until we finally have an event, or end of trace */
1462 err
= ltt_seek_next_event(tf
);
1463 if(unlikely(err
== ENOPROTOOPT
)) {
1467 /* Are we at the end of the buffer ? */
1469 if(unlikely(tf
->buffer
.index
== tf
->num_blocks
-1)){ /* end of trace ? */
1472 /* get next block */
1473 err
= map_block(tf
, tf
->buffer
.index
+ 1);
1475 g_error("Can not map block");
1479 } else break; /* We found an event ! */
1486 /* do specific operation on events */
1487 int ltt_tracefile_read_op(LttTracefile
*tf
)
1496 /* do event specific operation */
1498 /* do something if its an heartbeat event : increment the heartbeat count */
1499 //if(event->facility_id == LTT_FACILITY_CORE)
1500 // if(event->event_id == LTT_EVENT_HEARTBEAT)
1501 // tf->cur_heart_beat_number++;
1507 /* same as ltt_tracefile_read, but does not seek to the next event nor call
1508 * event specific operation. */
1509 int ltt_tracefile_read_update_event(LttTracefile
*tf
)
1517 pos
= tf
->buffer
.head
+ event
->offset
;
1519 /* Read event header */
1523 if(tf
->trace
->has_tsc
) {
1524 if(tf
->trace
->has_heartbeat
) {
1525 event
->time
.timestamp
= ltt_get_uint32(LTT_GET_BO(tf
),
1527 /* 32 bits -> 64 bits tsc */
1528 /* note : still works for seek and non seek cases. */
1529 if(event
->time
.timestamp
< (0xFFFFFFFFULL
&tf
->buffer
.tsc
)) {
1530 tf
->buffer
.tsc
= ((tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1532 | (guint64
)event
->time
.timestamp
;
1533 event
->tsc
= tf
->buffer
.tsc
;
1536 tf
->buffer
.tsc
= (tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1537 | (guint64
)event
->time
.timestamp
;
1538 event
->tsc
= tf
->buffer
.tsc
;
1540 pos
+= sizeof(guint32
);
1542 event
->tsc
= ltt_get_uint64(LTT_GET_BO(tf
), pos
);
1543 tf
->buffer
.tsc
= event
->tsc
;
1544 pos
+= sizeof(guint64
);
1547 event
->event_time
= ltt_interpolate_time(tf
, event
);
1549 event
->time
.delta
.tv_sec
= 0;
1550 event
->time
.delta
.tv_nsec
= ltt_get_uint32(LTT_GET_BO(tf
),
1551 pos
) * NSEC_PER_USEC
;
1553 event
->tsc
= tf
->buffer
.tsc
;
1555 event
->event_time
= ltt_time_add(tf
->buffer
.begin
.timestamp
,
1557 pos
+= sizeof(guint32
);
1560 event
->facility_id
= *(guint8
*)pos
;
1561 pos
+= sizeof(guint8
);
1563 event
->event_id
= *(guint8
*)pos
;
1564 pos
+= sizeof(guint8
);
1566 event
->event_size
= ltt_get_uint16(LTT_GET_BO(tf
), pos
);
1567 pos
+= sizeof(guint16
);
1571 /* get the data size and update the event fields with the current
1573 ltt_update_event_size(tf
);
1579 /****************************************************************************
1581 * map_block : map a block from the file
1583 * lttdes : ltt trace file
1584 * whichBlock : the block which will be read
1587 * EINVAL : lseek fail
1588 * EIO : can not read from the file
1589 ****************************************************************************/
1591 static gint
map_block(LttTracefile
* tf
, guint block_num
)
1593 int page_size
= getpagesize();
1594 struct ltt_block_start_header
*header
;
1596 g_assert(block_num
< tf
->num_blocks
);
1598 if(tf
->buffer
.head
!= NULL
) {
1599 if(munmap(tf
->buffer
.head
, PAGE_ALIGN(tf
->buf_size
))) {
1600 g_warning("unmap size : %u\n",
1601 PAGE_ALIGN(tf
->buf_size
));
1602 perror("munmap error");
1608 /* Multiple of pages aligned head */
1609 tf
->buffer
.head
= mmap(0,
1610 PAGE_ALIGN(tf
->buf_size
),
1611 PROT_READ
, MAP_PRIVATE
, tf
->fd
,
1612 PAGE_ALIGN((off_t
)tf
->buf_size
* (off_t
)block_num
));
1614 if(tf
->buffer
.head
== MAP_FAILED
) {
1615 perror("Error in allocating memory for buffer of tracefile");
1619 g_assert( ( (guint
)tf
->buffer
.head
&(8-1) ) == 0); // make sure it's aligned.
1622 tf
->buffer
.index
= block_num
;
1624 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
1626 tf
->buffer
.begin
.timestamp
= ltt_get_time(LTT_GET_BO(tf
),
1627 &header
->begin
.timestamp
);
1628 tf
->buffer
.begin
.timestamp
.tv_nsec
*= NSEC_PER_USEC
;
1629 g_debug("block %u begin : %lu.%lu", block_num
,
1630 tf
->buffer
.begin
.timestamp
.tv_sec
, tf
->buffer
.begin
.timestamp
.tv_nsec
);
1631 tf
->buffer
.begin
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1632 &header
->begin
.cycle_count
);
1633 tf
->buffer
.end
.timestamp
= ltt_get_time(LTT_GET_BO(tf
),
1634 &header
->end
.timestamp
);
1635 tf
->buffer
.end
.timestamp
.tv_nsec
*= NSEC_PER_USEC
;
1636 g_debug("block %u end : %lu.%lu", block_num
,
1637 tf
->buffer
.end
.timestamp
.tv_sec
, tf
->buffer
.end
.timestamp
.tv_nsec
);
1638 tf
->buffer
.end
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1639 &header
->end
.cycle_count
);
1640 tf
->buffer
.lost_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1641 &header
->lost_size
);
1643 tf
->buffer
.tsc
= tf
->buffer
.begin
.cycle_count
;
1644 tf
->event
.tsc
= tf
->buffer
.tsc
;
1647 * eventually support variable buffer size : will need a partial pre-read of
1648 * the headers to create an index when we open the trace... eventually. */
1649 g_assert(tf
->buf_size
== ltt_get_uint32(LTT_GET_BO(tf
),
1650 &header
->buf_size
));
1652 /* Now that the buffer is mapped, calculate the time interpolation for the
1655 tf
->buffer
.nsecs_per_cycle
= calc_nsecs_per_cycle(tf
);
1657 /* Make the current event point to the beginning of the buffer :
1658 * it means that the event read must get the first event. */
1659 tf
->event
.tracefile
= tf
;
1660 tf
->event
.block
= block_num
;
1661 tf
->event
.offset
= 0;
1670 /* It will update the fields offsets too */
1671 void ltt_update_event_size(LttTracefile
*tf
)
1675 /* Specific handling of core events : necessary to read the facility control
1677 LttFacility
*f
= ltt_trace_get_facility_by_num(tf
->trace
,
1678 tf
->event
.facility_id
);
1680 if(likely(tf
->event
.facility_id
== LTT_FACILITY_CORE
)) {
1681 switch((enum ltt_core_events
)tf
->event
.event_id
) {
1682 case LTT_EVENT_FACILITY_LOAD
:
1683 size
= strlen((char*)tf
->event
.data
) + 1;
1684 g_debug("Update Event facility load of facility %s", (char*)tf
->event
.data
);
1685 size
+= sizeof(struct LttFacilityLoad
);
1687 case LTT_EVENT_FACILITY_UNLOAD
:
1688 g_debug("Update Event facility unload");
1689 size
= sizeof(struct LttFacilityUnload
);
1691 case LTT_EVENT_STATE_DUMP_FACILITY_LOAD
:
1692 size
= strlen((char*)tf
->event
.data
) + 1;
1693 g_debug("Update Event facility load state dump of facility %s",
1694 (char*)tf
->event
.data
);
1695 size
+= sizeof(struct LttStateDumpFacilityLoad
);
1697 case LTT_EVENT_HEARTBEAT
:
1698 g_debug("Update Event heartbeat");
1699 size
= sizeof(TimeHeartbeat
);
1702 g_warning("Error in getting event size : tracefile %s, "
1703 "unknown event id %hhu in core facility.",
1704 g_quark_to_string(tf
->name
),
1705 tf
->event
.event_id
);
1706 goto event_id_error
;
1711 g_error("Unknown facility %hhu (0x%hhx) in tracefile %s",
1712 tf
->event
.facility_id
,
1713 tf
->event
.facility_id
,
1714 g_quark_to_string(tf
->name
));
1715 goto facility_error
;
1718 LttEventType
*event_type
=
1719 ltt_facility_eventtype_get(f
, tf
->event
.event_id
);
1722 g_error("Unknown event id %hhu in facility %s in tracefile %s",
1724 g_quark_to_string(f
->name
),
1725 g_quark_to_string(tf
->name
));
1726 goto event_type_error
;
1729 if(event_type
->root_field
)
1730 size
= get_field_type_size(tf
, event_type
,
1731 0, 0, event_type
->root_field
, tf
->event
.data
);
1735 g_debug("Event root field : f.e %hhu.%hhu size %zd",
1736 tf
->event
.facility_id
,
1737 tf
->event
.event_id
, size
);
1740 tf
->event
.data_size
= size
;
1742 /* Check consistency between kernel and LTTV structure sizes */
1743 g_assert(tf
->event
.data_size
== tf
->event
.event_size
);
1750 tf
->event
.data_size
= 0;
1754 /* Take the tf current event offset and use the event facility id and event id
1755 * to figure out where is the next event offset.
1757 * This is an internal function not aiming at being used elsewhere : it will
1758 * not jump over the current block limits. Please consider using
1759 * ltt_tracefile_read to do this.
1761 * Returns 0 on success
1762 * ERANGE if we are at the end of the buffer.
1763 * ENOPROTOOPT if an error occured when getting the current event size.
1765 static int ltt_seek_next_event(LttTracefile
*tf
)
1771 /* seek over the buffer header if we are at the buffer start */
1772 if(tf
->event
.offset
== 0) {
1773 tf
->event
.offset
+= sizeof(struct ltt_block_start_header
);
1775 if(tf
->event
.offset
== tf
->buf_size
- tf
->buffer
.lost_size
) {
1782 pos
= tf
->event
.data
;
1784 if(tf
->event
.data_size
< 0) goto error
;
1786 pos
+= (size_t)tf
->event
.data_size
;
1788 tf
->event
.offset
= pos
- tf
->buffer
.head
;
1790 if(tf
->event
.offset
== tf
->buf_size
- tf
->buffer
.lost_size
) {
1799 g_error("Error in ltt_seek_next_event for tracefile %s",
1800 g_quark_to_string(tf
->name
));
1805 /*****************************************************************************
1807 * calc_nsecs_per_cycle : calculate nsecs per cycle for current block
1810 ****************************************************************************/
1812 static double calc_nsecs_per_cycle(LttTracefile
* tf
)
1814 LttTime lBufTotalTime
; /* Total time for this buffer */
1815 double lBufTotalNSec
; /* Total time for this buffer in nsecs */
1816 LttCycleCount lBufTotalCycle
;/* Total cycles for this buffer */
1818 /* Calculate the total time for this buffer */
1819 lBufTotalTime
= ltt_time_sub(tf
->buffer
.end
.timestamp
,
1820 tf
->buffer
.begin
.timestamp
);
1822 /* Calculate the total cycles for this bufffer */
1823 lBufTotalCycle
= tf
->buffer
.end
.cycle_count
;
1824 lBufTotalCycle
-= tf
->buffer
.begin
.cycle_count
;
1826 /* Convert the total time to double */
1827 lBufTotalNSec
= ltt_time_to_double(lBufTotalTime
);
1829 return lBufTotalNSec
/ (double)lBufTotalCycle
;
1833 void setFieldsOffset(LttTracefile
*tf
, LttEventType
*evT
,void *evD
)
1835 LttField
* rootFld
= evT
->root_field
;
1836 // rootFld->base_address = evD;
1839 rootFld
->field_size
= getFieldtypeSize(tf
, evT
->facility
,
1840 evT
, 0,0,rootFld
, evD
);
1844 /*****************************************************************************
1846 * set_fields_offsets : set the precomputable offset of the fields
1848 * tracefile : opened trace file
1849 * event_type : the event type
1850 ****************************************************************************/
1852 void set_fields_offsets(LttTracefile
*tf
, LttEventType
*event_type
)
1854 LttField
*field
= event_type
->root_field
;
1855 enum field_status fixed_root
= FIELD_FIXED
, fixed_parent
= FIELD_FIXED
;
1858 preset_field_type_size(tf
, event_type
, 0, 0,
1859 &fixed_root
, &fixed_parent
,
1865 /*****************************************************************************
1867 * preset_field_type_size : set the fixed sizes of the field type
1870 * event_type : event type
1871 * offset_root : offset from the root
1872 * offset_parent : offset from the parent
1873 * fixed_root : Do we know a fixed offset to the root ?
1874 * fixed_parent : Do we know a fixed offset to the parent ?
1876 ****************************************************************************/
1877 void preset_field_type_size(LttTracefile
*tf
, LttEventType
*event_type
,
1878 off_t offset_root
, off_t offset_parent
,
1879 enum field_status
*fixed_root
, enum field_status
*fixed_parent
,
1882 enum field_status local_fixed_root
, local_fixed_parent
;
1886 g_assert(field
->fixed_root
== FIELD_UNKNOWN
);
1887 g_assert(field
->fixed_parent
== FIELD_UNKNOWN
);
1888 g_assert(field
->fixed_size
== FIELD_UNKNOWN
);
1890 type
= field
->field_type
;
1892 field
->fixed_root
= *fixed_root
;
1893 if(field
->fixed_root
== FIELD_FIXED
)
1894 field
->offset_root
= offset_root
;
1896 field
->offset_root
= 0;
1898 field
->fixed_parent
= *fixed_parent
;
1899 if(field
->fixed_parent
== FIELD_FIXED
)
1900 field
->offset_parent
= offset_parent
;
1902 field
->offset_parent
= 0;
1904 size_t current_root_offset
;
1905 size_t current_offset
;
1906 enum field_status current_child_status
, final_child_status
;
1909 switch(type
->type_class
) {
1914 field
->field_size
= ltt_type_size(tf
->trace
, type
);
1915 field
->fixed_size
= FIELD_FIXED
;
1918 field
->field_size
= (off_t
)event_type
->facility
->pointer_size
;
1919 field
->fixed_size
= FIELD_FIXED
;
1923 field
->field_size
= (off_t
)event_type
->facility
->long_size
;
1924 field
->fixed_size
= FIELD_FIXED
;
1929 field
->field_size
= (off_t
)event_type
->facility
->size_t_size
;
1930 field
->fixed_size
= FIELD_FIXED
;
1933 local_fixed_root
= FIELD_VARIABLE
;
1934 local_fixed_parent
= FIELD_VARIABLE
;
1935 preset_field_type_size(tf
, event_type
,
1937 &local_fixed_root
, &local_fixed_parent
,
1939 field
->fixed_size
= FIELD_VARIABLE
;
1940 field
->field_size
= 0;
1941 *fixed_root
= FIELD_VARIABLE
;
1942 *fixed_parent
= FIELD_VARIABLE
;
1945 field
->fixed_size
= FIELD_VARIABLE
;
1946 field
->field_size
= 0;
1947 *fixed_root
= FIELD_VARIABLE
;
1948 *fixed_parent
= FIELD_VARIABLE
;
1951 local_fixed_root
= FIELD_VARIABLE
;
1952 local_fixed_parent
= FIELD_VARIABLE
;
1953 preset_field_type_size(tf
, event_type
,
1955 &local_fixed_root
, &local_fixed_parent
,
1957 field
->fixed_size
= field
->child
[0]->fixed_size
;
1958 if(field
->fixed_size
== FIELD_FIXED
) {
1959 field
->field_size
= type
->element_number
* field
->child
[0]->field_size
;
1961 field
->field_size
= 0;
1962 *fixed_root
= FIELD_VARIABLE
;
1963 *fixed_parent
= FIELD_VARIABLE
;
1967 current_root_offset
= field
->offset_root
;
1969 current_child_status
= FIELD_FIXED
;
1970 for(i
=0;i
<type
->element_number
;i
++) {
1971 preset_field_type_size(tf
, event_type
,
1972 current_root_offset
, current_offset
,
1973 fixed_root
, ¤t_child_status
,
1975 if(current_child_status
== FIELD_FIXED
) {
1976 current_root_offset
+= field
->child
[i
]->field_size
;
1977 current_offset
+= field
->child
[i
]->field_size
;
1979 current_root_offset
= 0;
1983 if(current_child_status
!= FIELD_FIXED
) {
1984 *fixed_parent
= current_child_status
;
1985 field
->field_size
= 0;
1986 field
->fixed_size
= current_child_status
;
1988 field
->field_size
= current_offset
;
1989 field
->fixed_size
= FIELD_FIXED
;
1993 current_root_offset
= field
->offset_root
;
1996 final_child_status
= FIELD_FIXED
;
1997 for(i
=0;i
<type
->element_number
;i
++) {
1998 enum field_status current_root_child_status
= FIELD_FIXED
;
1999 enum field_status current_child_status
= FIELD_FIXED
;
2000 preset_field_type_size(tf
, event_type
,
2001 current_root_offset
, current_offset
,
2002 ¤t_root_child_status
, ¤t_child_status
,
2004 if(current_child_status
!= FIELD_FIXED
)
2005 final_child_status
= current_child_status
;
2007 max_size
= max(max_size
, field
->child
[i
]->field_size
);
2009 if(final_child_status
!= FIELD_FIXED
) {
2010 *fixed_root
= final_child_status
;
2011 *fixed_parent
= final_child_status
;
2012 field
->field_size
= 0;
2013 field
->fixed_size
= current_child_status
;
2015 field
->field_size
= max_size
;
2016 field
->fixed_size
= FIELD_FIXED
;
2024 /*****************************************************************************
2026 * check_fields_compatibility : Check for compatibility between two fields :
2027 * do they use the same inner structure ?
2029 * event_type1 : event type
2030 * event_type2 : event type
2033 *Returns : 0 if identical
2035 ****************************************************************************/
2036 gint
check_fields_compatibility(LttEventType
*event_type1
,
2037 LttEventType
*event_type2
,
2038 LttField
*field1
, LttField
*field2
)
2040 guint different
= 0;
2041 enum field_status local_fixed_root
, local_fixed_parent
;
2046 if(field1
== NULL
) {
2047 if(field2
== NULL
) goto end
;
2052 } else if(field2
== NULL
) {
2057 g_assert(field1
->fixed_root
!= FIELD_UNKNOWN
);
2058 g_assert(field2
->fixed_root
!= FIELD_UNKNOWN
);
2059 g_assert(field1
->fixed_parent
!= FIELD_UNKNOWN
);
2060 g_assert(field2
->fixed_parent
!= FIELD_UNKNOWN
);
2061 g_assert(field1
->fixed_size
!= FIELD_UNKNOWN
);
2062 g_assert(field2
->fixed_size
!= FIELD_UNKNOWN
);
2064 type1
= field1
->field_type
;
2065 type2
= field2
->field_type
;
2067 size_t current_root_offset
;
2068 size_t current_offset
;
2069 enum field_status current_child_status
, final_child_status
;
2072 if(type1
->type_class
!= type2
->type_class
) {
2076 if(type1
->element_name
!= type2
->element_name
) {
2081 switch(type1
->type_class
) {
2091 if(field1
->field_size
!= field2
->field_size
) {
2097 if(type1
->element_number
!= type2
->element_number
) {
2101 for(i
=0;i
<type1
->element_number
;i
++) {
2102 if(type1
->enum_strings
[i
] != type2
->enum_strings
[i
]) {
2109 /* Two elements : size and child */
2110 g_assert(type1
->element_number
!= type2
->element_number
);
2111 for(i
=0;i
<type1
->element_number
;i
++) {
2112 if(check_fields_compatibility(event_type1
, event_type2
,
2113 field1
->child
[0], field2
->child
[0])) {
2122 if(field1
->field_size
!= field2
->field_size
) {
2126 /* Two elements : size and child */
2127 g_assert(type1
->element_number
!= type2
->element_number
);
2128 for(i
=0;i
<type1
->element_number
;i
++) {
2129 if(check_fields_compatibility(event_type1
, event_type2
,
2130 field1
->child
[0], field2
->child
[0])) {
2138 if(type1
->element_number
!= type2
->element_number
) {
2142 for(i
=0;i
<type1
->element_number
;i
++) {
2143 if(check_fields_compatibility(event_type1
, event_type2
,
2144 field1
->child
[0], field2
->child
[0])) {
2159 /*****************************************************************************
2161 * getFieldtypeSize: get the size of the field type (primitive type)
2164 * offsetRoot : offset from the root
2165 * offsetParent : offset from the parrent
2167 * evD : event data, it may be NULL
2169 * int : size of the field
2170 ****************************************************************************/
2172 static inline gint
getFieldtypeSize(LttTracefile
*tf
,
2173 LttEventType
* evT
, gint offsetRoot
,
2174 gint offsetParent
, LttField
* fld
, void *evD
)
2176 gint size
, size1
, element_number
, i
, offset1
, offset2
;
2177 LttType
* type
= fld
->field_type
;
2179 /* This likely has been tested with gcov : half of them.. */
2180 if(unlikely(fld
->field_fixed
== 1)){
2182 if(unlikely(fld
== evT
->root_field
)) {
2183 size
= fld
->field_size
;
2184 goto end_getFieldtypeSize
;
2188 /* From gcov profiling : half string, half struct, can we gain something
2189 * from that ? (Mathieu) */
2190 switch(type
->type_class
) {
2192 element_number
= (int) type
->element_number
;
2193 if(fld
->field_fixed
== -1){
2194 size
= getFieldtypeSize(tf
, evT
, offsetRoot
,
2195 0,fld
->child
[0], NULL
);
2196 if(size
== 0){ //has string or sequence
2197 fld
->field_fixed
= 0;
2199 fld
->field_fixed
= 1;
2200 size
*= element_number
;
2202 }else if(fld
->field_fixed
== 0){// has string or sequence
2204 for(i
=0;i
<element_number
;i
++){
2205 size
+= getFieldtypeSize(tf
, evT
, offsetRoot
+size
,size
,
2206 fld
->child
[0], evD
+size
);
2208 }else size
= fld
->field_size
;
2210 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2211 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2217 size1
= (int) ltt_type_size(fac
, type
);
2218 if(fld
->field_fixed
== -1){
2219 fld
->sequ_number_size
= size1
;
2220 fld
->field_fixed
= 0;
2221 size
= getFieldtypeSize(evT
, offsetRoot
,
2222 0,fld
->child
[0], NULL
);
2223 fld
->element_size
= size
;
2225 element_number
= getIntNumber(tf
,size1
,evD
);
2226 type
->element_number
= element_number
;
2227 if(fld
->element_size
> 0){
2228 size
= element_number
* fld
->element_size
;
2229 }else{//sequence has string or sequence
2231 for(i
=0;i
<element_number
;i
++){
2232 size
+= getFieldtypeSize(tf
, evT
,
2233 offsetRoot
+size
+size1
,size
+size1
,
2234 fld
->child
[0], evD
+size
+size1
);
2240 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2241 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2248 if(fld
->field_fixed
== -1){
2249 fld
->field_fixed
= 0;
2251 /* Hope my implementation is faster than strlen (Mathieu) */
2252 char *ptr
=(char*)evD
;
2254 /* from gcov : many many strings are empty, make it the common case.*/
2255 while(unlikely(*ptr
!= '\0')) { size
++; ptr
++; }
2256 //size = ptr - (char*)evD + 1; //include end : '\0'
2258 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2259 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2264 element_number
= (int) type
->element_number
;
2266 /* tested with gcov */
2267 if(unlikely(fld
->field_fixed
== -1)){
2268 offset1
= offsetRoot
;
2270 for(i
=0;i
<element_number
;i
++){
2271 size1
=getFieldtypeSize(tf
, evT
,offset1
,offset2
,
2272 fld
->child
[i
], NULL
);
2273 if(likely(size1
> 0 && size
>= 0)){
2275 if(likely(offset1
>= 0)) offset1
+= size1
;
2283 if(unlikely(size
== -1)){
2284 fld
->field_fixed
= 0;
2286 }else fld
->field_fixed
= 1;
2287 }else if(likely(fld
->field_fixed
== 0)){
2288 offset1
= offsetRoot
;
2290 for(i
=0;unlikely(i
<element_number
);i
++){
2291 size
=getFieldtypeSize(tf
, evT
, offset1
, offset2
,
2292 fld
->child
[i
], evD
+offset2
);
2297 }else size
= fld
->field_size
;
2298 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2299 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2303 if(unlikely(fld
->field_fixed
== -1)){
2304 size
= (int) ltt_type_size(LTT_GET_BO(tf
), type
);
2305 fld
->field_fixed
= 1;
2306 }else size
= fld
->field_size
;
2308 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2309 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2314 fld
->offset_root
= offsetRoot
;
2315 fld
->offset_parent
= offsetParent
;
2316 fld
->field_size
= size
;
2318 end_getFieldtypeSize
:
2324 /*****************************************************************************
2326 * ltt_get_int : get an integer number
2328 * reverse_byte_order: must we reverse the byte order ?
2329 * size : the size of the integer
2330 * ptr : the data pointer
2332 * gint64 : a 64 bits integer
2333 ****************************************************************************/
2335 gint64
ltt_get_int(gboolean reverse_byte_order
, gint size
, void *data
)
2340 case 1: val
= *((gint8
*)data
); break;
2341 case 2: val
= ltt_get_int16(reverse_byte_order
, data
); break;
2342 case 4: val
= ltt_get_int32(reverse_byte_order
, data
); break;
2343 case 8: val
= ltt_get_int64(reverse_byte_order
, data
); break;
2344 default: val
= ltt_get_int64(reverse_byte_order
, data
);
2345 g_critical("get_int : integer size %d unknown", size
);
2352 /*****************************************************************************
2354 * ltt_get_uint : get an unsigned integer number
2356 * reverse_byte_order: must we reverse the byte order ?
2357 * size : the size of the integer
2358 * ptr : the data pointer
2360 * guint64 : a 64 bits unsigned integer
2361 ****************************************************************************/
2363 guint64
ltt_get_uint(gboolean reverse_byte_order
, gint size
, void *data
)
2368 case 1: val
= *((gint8
*)data
); break;
2369 case 2: val
= ltt_get_uint16(reverse_byte_order
, data
); break;
2370 case 4: val
= ltt_get_uint32(reverse_byte_order
, data
); break;
2371 case 8: val
= ltt_get_uint64(reverse_byte_order
, data
); break;
2372 default: val
= ltt_get_uint64(reverse_byte_order
, data
);
2373 g_critical("get_uint : unsigned integer size %d unknown",
2382 /* get the node name of the system */
2384 char * ltt_trace_system_description_node_name (LttSystemDescription
* s
)
2386 return s
->node_name
;
2390 /* get the domain name of the system */
2392 char * ltt_trace_system_description_domain_name (LttSystemDescription
* s
)
2394 return s
->domain_name
;
2398 /* get the description of the system */
2400 char * ltt_trace_system_description_description (LttSystemDescription
* s
)
2402 return s
->description
;
2406 /* get the start time of the trace */
2408 LttTime
ltt_trace_system_description_trace_start_time(LttSystemDescription
*s
)
2410 return s
->trace_start
;
2414 LttTracefile
*ltt_tracefile_new()
2416 return g_new(LttTracefile
, 1);
2419 void ltt_tracefile_destroy(LttTracefile
*tf
)
2424 void ltt_tracefile_copy(LttTracefile
*dest
, const LttTracefile
*src
)
2429 /* Before library loading... */
2431 static void __attribute__((constructor
)) init(void)
2433 LTT_FACILITY_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
2434 LTT_EVENT_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
2436 LTT_TRACEFILE_NAME_FACILITIES
= g_quark_from_string("/control/facilities");