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 /* 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 */
97 static guint32
calc_nsecs_per_cycle(LttTracefile
* t
);
98 static guint64
cycles_2_ns(LttTracefile
*tf
, guint64 cycles
);
101 /* go to the next event */
102 static int ltt_seek_next_event(LttTracefile
*tf
);
104 void ltt_update_event_size(LttTracefile
*tf
);
107 /* Functions to parse system.xml file (using glib xml parser) */
108 static void parser_start_element (GMarkupParseContext __UNUSED__
*context
,
109 const gchar
*element_name
,
110 const gchar
**attribute_names
,
111 const gchar
**attribute_values
,
116 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
117 if(strcmp("system", element_name
)){
118 *error
= g_error_new(G_MARKUP_ERROR
,
120 "This is not system.xml file");
124 while(attribute_names
[i
]){
125 if(strcmp("node_name", attribute_names
[i
])==0){
126 des
->node_name
= g_strdup(attribute_values
[i
]);
127 }else if(strcmp("domainname", attribute_names
[i
])==0){
128 des
->domain_name
= g_strdup(attribute_values
[i
]);
129 }else if(strcmp("cpu", attribute_names
[i
])==0){
130 des
->nb_cpu
= atoi(attribute_values
[i
]);
131 }else if(strcmp("arch_size", attribute_names
[i
])==0){
132 if(strcmp(attribute_values
[i
],"LP32") == 0) des
->size
= LTT_LP32
;
133 else if(strcmp(attribute_values
[i
],"ILP32") == 0) des
->size
= LTT_ILP32
;
134 else if(strcmp(attribute_values
[i
],"LP64") == 0) des
->size
= LTT_LP64
;
135 else if(strcmp(attribute_values
[i
],"ILP64") == 0) des
->size
= LTT_ILP64
;
136 else if(strcmp(attribute_values
[i
],"UNKNOWN") == 0) des
->size
= LTT_UNKNOWN
;
137 }else if(strcmp("endian", attribute_names
[i
])==0){
138 if(strcmp(attribute_values
[i
],"LITTLE_ENDIAN") == 0)
139 des
->endian
= LTT_LITTLE_ENDIAN
;
140 else if(strcmp(attribute_values
[i
],"BIG_ENDIAN") == 0)
141 des
->endian
= LTT_BIG_ENDIAN
;
142 }else if(strcmp("kernel_name", attribute_names
[i
])==0){
143 des
->kernel_name
= g_strdup(attribute_values
[i
]);
144 }else if(strcmp("kernel_release", attribute_names
[i
])==0){
145 des
->kernel_release
= g_strdup(attribute_values
[i
]);
146 }else if(strcmp("kernel_version", attribute_names
[i
])==0){
147 des
->kernel_version
= g_strdup(attribute_values
[i
]);
148 }else if(strcmp("machine", attribute_names
[i
])==0){
149 des
->machine
= g_strdup(attribute_values
[i
]);
150 }else if(strcmp("processor", attribute_names
[i
])==0){
151 des
->processor
= g_strdup(attribute_values
[i
]);
152 }else if(strcmp("hardware_platform", attribute_names
[i
])==0){
153 des
->hardware_platform
= g_strdup(attribute_values
[i
]);
154 }else if(strcmp("operating_system", attribute_names
[i
])==0){
155 des
->operating_system
= g_strdup(attribute_values
[i
]);
156 }else if(strcmp("ltt_major_version", attribute_names
[i
])==0){
157 des
->ltt_major_version
= atoi(attribute_values
[i
]);
158 }else if(strcmp("ltt_minor_version", attribute_names
[i
])==0){
159 des
->ltt_minor_version
= atoi(attribute_values
[i
]);
160 }else if(strcmp("ltt_block_size", attribute_names
[i
])==0){
161 des
->ltt_block_size
= atoi(attribute_values
[i
]);
163 *error
= g_error_new(G_MARKUP_ERROR
,
165 "Not a valid attribute");
172 static void parser_characters (GMarkupParseContext __UNUSED__
*context
,
174 gsize __UNUSED__ text_len
,
176 GError __UNUSED__
**error
)
178 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
179 des
->description
= g_strdup(text
);
182 LttFacility
*ltt_trace_get_facility_by_num(LttTrace
*t
,
185 g_assert(num
< t
->facilities_by_num
->len
);
187 return &g_array_index(t
->facilities_by_num
, LttFacility
, num
);
191 guint
ltt_trace_get_num_cpu(LttTrace
*t
)
199 * Return value : 0 success, 1 bad tracefile
201 int parse_trace_header(void *header
, LttTracefile
*tf
, LttTrace
*t
)
203 guint32
*magic_number
= (guint32
*)header
;
204 struct ltt_trace_header_any
*any
= (struct ltt_trace_header_any
*)header
;
206 if(*magic_number
== LTT_MAGIC_NUMBER
)
208 else if(*magic_number
== LTT_REV_MAGIC_NUMBER
)
210 else /* invalid magic number, bad tracefile ! */
213 /* Get float byte order : might be different from int byte order
214 * (or is set to 0 if the trace has no float (kernel trace)) */
215 tf
->float_word_order
= any
->float_word_order
;
218 t
->arch_type
= ltt_get_uint32(LTT_GET_BO(tf
),
220 t
->arch_variant
= ltt_get_uint32(LTT_GET_BO(tf
),
222 t
->arch_size
= any
->arch_size
;
223 t
->ltt_major_version
= any
->major_version
;
224 t
->ltt_minor_version
= any
->minor_version
;
225 t
->flight_recorder
= any
->flight_recorder
;
226 t
->has_heartbeat
= any
->has_heartbeat
;
227 t
->has_alignment
= any
->has_alignment
;
228 t
->has_tsc
= any
->has_tsc
;
232 switch(any
->major_version
) {
235 switch(any
->minor_version
) {
238 tf
->buffer_header_size
=
239 sizeof(struct ltt_block_start_header
)
240 + sizeof(struct ltt_trace_header_0_3
);
241 g_warning("Unsupported trace version : %hhu.%hhu",
242 any
->major_version
, any
->minor_version
);
248 struct ltt_trace_header_0_4
*vheader
=
249 (struct ltt_trace_header_0_4
*)header
;
250 tf
->buffer_header_size
=
251 sizeof(struct ltt_block_start_header
)
252 + sizeof(struct ltt_trace_header_0_4
);
254 t
->start_freq
= ltt_get_uint64(LTT_GET_BO(tf
),
255 &vheader
->start_freq
);
256 t
->start_tsc
= ltt_get_uint64(LTT_GET_BO(tf
),
257 &vheader
->start_tsc
);
258 t
->start_monotonic
= ltt_get_uint64(LTT_GET_BO(tf
),
259 &vheader
->start_monotonic
);
260 t
->start_time
= ltt_get_time(LTT_GET_BO(tf
),
261 &vheader
->start_time
);
266 g_warning("Unsupported trace version : %hhu.%hhu",
267 any
->major_version
, any
->minor_version
);
273 g_warning("Unsupported trace version : %hhu.%hhu",
274 any
->major_version
, any
->minor_version
);
284 /*****************************************************************************
286 * ltt_tracefile_open : open a trace file, construct a LttTracefile
288 * t : the trace containing the tracefile
289 * fileName : path name of the trace file
290 * tf : the tracefile structure
292 * : 0 for success, -1 otherwise.
293 ****************************************************************************/
295 gint
ltt_tracefile_open(LttTrace
*t
, gchar
* fileName
, LttTracefile
*tf
)
297 struct stat lTDFStat
; /* Trace data file status */
298 struct ltt_block_start_header
*header
;
299 int page_size
= getpagesize();
302 tf
->long_name
= g_quark_from_string(fileName
);
304 tf
->fd
= open(fileName
, O_RDONLY
);
306 g_warning("Unable to open input data file %s\n", fileName
);
310 // Get the file's status
311 if(fstat(tf
->fd
, &lTDFStat
) < 0){
312 g_warning("Unable to get the status of the input data file %s\n", fileName
);
316 // Is the file large enough to contain a trace
317 if(lTDFStat
.st_size
<
318 (off_t
)(sizeof(struct ltt_block_start_header
)
319 + sizeof(struct ltt_trace_header_any
))){
320 g_print("The input data file %s does not contain a trace\n", fileName
);
324 /* Temporarily map the buffer start header to get trace information */
325 /* Multiple of pages aligned head */
326 tf
->buffer
.head
= mmap(0,
327 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
328 + sizeof(struct ltt_trace_header_any
)), PROT_READ
,
329 MAP_PRIVATE
, tf
->fd
, 0);
330 if(tf
->buffer
.head
== MAP_FAILED
) {
331 perror("Error in allocating memory for buffer of tracefile");
334 g_assert( ( (guint
)tf
->buffer
.head
&(8-1) ) == 0); // make sure it's aligned.
336 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
338 if(parse_trace_header(header
->trace
, tf
, NULL
)) {
339 g_warning("parse_trace_header error");
343 //store the size of the file
344 tf
->file_size
= lTDFStat
.st_size
;
345 tf
->buf_size
= ltt_get_uint32(LTT_GET_BO(tf
), &header
->buf_size
);
346 tf
->num_blocks
= tf
->file_size
/ tf
->buf_size
;
348 if(munmap(tf
->buffer
.head
,
349 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
350 + sizeof(struct ltt_trace_header_any
)))) {
351 g_warning("unmap size : %u\n",
352 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
353 + sizeof(struct ltt_trace_header_any
)));
354 perror("munmap error");
357 tf
->buffer
.head
= NULL
;
359 //read the first block
360 if(map_block(tf
,0)) {
361 perror("Cannot map block for tracefile");
369 if(munmap(tf
->buffer
.head
,
370 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
371 + sizeof(struct ltt_trace_header_any
)))) {
372 g_warning("unmap size : %u\n",
373 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
374 + sizeof(struct ltt_trace_header_any
)));
375 perror("munmap error");
384 LttTrace
*ltt_tracefile_get_trace(LttTracefile
*tf
)
390 /*****************************************************************************
391 *Open control and per cpu tracefiles
392 ****************************************************************************/
394 void ltt_tracefile_open_cpu(LttTrace
*t
, gchar
* tracefile_name
)
397 tf
= ltt_tracefile_open(t
,tracefile_name
);
399 t
->per_cpu_tracefile_number
++;
400 g_ptr_array_add(t
->per_cpu_tracefiles
, tf
);
403 gint
ltt_tracefile_open_control(LttTrace
*t
, gchar
* control_name
)
412 tf
= ltt_tracefile_open(t
,control_name
);
414 g_warning("ltt_tracefile_open_control : bad file descriptor");
417 t
->control_tracefile_number
++;
418 g_ptr_array_add(t
->control_tracefiles
,tf
);
420 //parse facilities tracefile to get base_id
421 if(strcmp(&control_name
[strlen(control_name
)-10],"facilities") ==0){
423 if(!ltt_tracefile_read(tf
,&ev
)) return 0; // end of file
425 if(ev
.event_id
== TRACE_FACILITY_LOAD
){
427 fLoad
.name
= (gchar
*)pos
;
428 fLoad
.checksum
= *(LttChecksum
*)(pos
+ strlen(fLoad
.name
));
429 fLoad
.base_code
= *(guint32
*)(pos
+ strlen(fLoad
.name
) + sizeof(LttChecksum
));
431 for(i
=0;i
<t
->facility_number
;i
++){
432 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
433 if(strcmp(f
->name
,fLoad
.name
)==0 && fLoad
.checksum
==f
->checksum
){
434 f
->base_id
= fLoad
.base_code
;
438 if(i
==t
->facility_number
) {
439 g_warning("Facility: %s, checksum: %u is not found",
440 fLoad
.name
,(unsigned int)fLoad
.checksum
);
443 }else if(ev
.event_id
== TRACE_BLOCK_START
){
445 }else if(ev
.event_id
== TRACE_BLOCK_END
){
448 g_warning("Not valid facilities trace file");
457 /*****************************************************************************
459 * ltt_tracefile_close: close a trace file,
461 * t : tracefile which will be closed
462 ****************************************************************************/
464 void ltt_tracefile_close(LttTracefile
*t
)
466 int page_size
= getpagesize();
468 if(t
->buffer
.head
!= NULL
)
469 if(munmap(t
->buffer
.head
, PAGE_ALIGN(t
->buf_size
))) {
470 g_warning("unmap size : %u\n",
471 PAGE_ALIGN(t
->buf_size
));
472 perror("munmap error");
480 /*****************************************************************************
481 *Get system information
482 ****************************************************************************/
484 gint
getSystemInfo(LttSystemDescription
* des
, gchar
* pathname
)
491 GMarkupParseContext
* context
;
492 GError
* error
= NULL
;
493 GMarkupParser markup_parser
=
495 parser_start_element
,
498 NULL
, /* passthrough */
502 fd
= g_open(pathname
, O_RDONLY
, 0);
504 g_warning("Can not open file : %s\n", pathname
);
508 iochan
= g_io_channel_unix_new(fd
);
510 context
= g_markup_parse_context_new(&markup_parser
, 0, des
,NULL
);
512 //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){
513 while(g_io_channel_read_line(iochan
, &buf
, &length
, NULL
, &error
)
514 != G_IO_STATUS_EOF
) {
517 g_warning("Can not read xml file: \n%s\n", error
->message
);
520 if(!g_markup_parse_context_parse(context
, buf
, length
, &error
)){
522 g_warning("Can not parse xml file: \n%s\n", error
->message
);
525 g_markup_parse_context_free(context
);
527 g_io_channel_shutdown(iochan
, FALSE
, &error
); /* No flush */
529 g_warning("Can not close file: \n%s\n", error
->message
);
537 g_markup_parse_context_free(context
);
539 g_io_channel_shutdown(iochan
, FALSE
, &error
); /* No flush */
541 g_warning("Can not close file: \n%s\n", error
->message
);
552 /*****************************************************************************
553 *The following functions get facility/tracefile information
554 ****************************************************************************/
556 gint
getFacilityInfo(LttTrace
*t
, gchar
* eventdefs
)
563 gchar fullname
[DIR_NAME_SIZE
];
564 GError
* error
= NULL
;
566 dir
= g_dir_open(eventdefs
, 0, &error
);
569 g_warning("Can not open directory: %s, %s\n", eventdefs
, error
->message
);
574 while((name
= g_dir_read_name(dir
)) != NULL
){
575 if(!g_pattern_match_simple("*.xml", name
)) continue;
576 strcpy(fullname
,eventdefs
);
577 strcat(fullname
,name
);
578 ltt_facility_open(t
,fullname
);
582 for(j
=0;j
<t
->facility_number
;j
++){
583 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, j
);
584 for(i
=0; i
<f
->event_number
; i
++){
586 setFieldsOffset(NULL
, et
, NULL
, t
);
593 /*****************************************************************************
594 *A trace is specified as a pathname to the directory containing all the
595 *associated data (control tracefiles, per cpu tracefiles, event
598 *When a trace is closed, all the associated facilities, types and fields
599 *are released as well.
603 /****************************************************************************
604 * get_absolute_pathname
606 * return the unique pathname in the system
608 * MD : Fixed this function so it uses realpath, dealing well with
609 * forgotten cases (.. were not used correctly before).
611 ****************************************************************************/
612 void get_absolute_pathname(const gchar
*pathname
, gchar
* abs_pathname
)
614 abs_pathname
[0] = '\0';
616 if ( realpath (pathname
, abs_pathname
) != NULL
)
620 /* error, return the original path unmodified */
621 strcpy(abs_pathname
, pathname
);
627 /* Search for something like : .*_.*
629 * The left side is the name, the right side is the number.
632 int get_tracefile_name_number(const gchar
*raw_name
,
636 guint raw_name_len
= strlen(raw_name
);
637 gchar char_name
[PATH_MAX
];
643 for(i
=raw_name_len
-1;i
>=0;i
--) {
644 if(raw_name
[i
] == '_') break;
646 if(i
==0) /* Either not found or name length is 0 */
650 cpu_num
= strtol(raw_name
+underscore_pos
+1, &endptr
, 10);
652 if(endptr
== raw_name
+underscore_pos
+1)
653 return -1; /* No digit */
654 if(cpu_num
== LONG_MIN
|| cpu_num
== LONG_MAX
)
655 return -1; /* underflow / overflow */
657 strncpy(char_name
, raw_name
, underscore_pos
);
659 char_name
[underscore_pos
] = '\0';
661 *name
= g_quark_from_string(char_name
);
668 GData
**ltt_trace_get_tracefiles_groups(LttTrace
*trace
)
670 return &trace
->tracefiles
;
674 void compute_tracefile_group(GQuark key_id
,
676 struct compute_tracefile_group_args
*args
)
681 for(i
=0; i
<group
->len
; i
++) {
682 tf
= &g_array_index (group
, LttTracefile
, i
);
684 args
->func(tf
, args
->func_args
);
689 void ltt_tracefile_group_destroy(gpointer data
)
691 GArray
*group
= (GArray
*)data
;
695 for(i
=0; i
<group
->len
; i
++) {
696 tf
= &g_array_index (group
, LttTracefile
, i
);
698 ltt_tracefile_close(tf
);
700 g_array_free(group
, TRUE
);
703 gboolean
ltt_tracefile_group_has_cpu_online(gpointer data
)
705 GArray
*group
= (GArray
*)data
;
709 for(i
=0; i
<group
->len
; i
++) {
710 tf
= &g_array_index (group
, LttTracefile
, i
);
711 if(tf
->cpu_online
) return 1;
717 /* Open each tracefile under a specific directory. Put them in a
718 * GData : permits to access them using their tracefile group pathname.
719 * i.e. access control/modules tracefile group by index :
722 * relative path is the path relative to the trace root
723 * root path is the full path
725 * A tracefile group is simply an array where all the per cpu tracefiles sits.
728 static int open_tracefiles(LttTrace
*trace
, gchar
*root_path
,
729 gchar
*relative_path
)
731 DIR *dir
= opendir(root_path
);
732 struct dirent
*entry
;
733 struct stat stat_buf
;
736 gchar path
[PATH_MAX
];
741 gchar rel_path
[PATH_MAX
];
750 strncpy(path
, root_path
, PATH_MAX
-1);
751 path_len
= strlen(path
);
752 path
[path_len
] = '/';
754 path_ptr
= path
+ path_len
;
756 strncpy(rel_path
, relative_path
, PATH_MAX
-1);
757 rel_path_len
= strlen(rel_path
);
758 rel_path
[rel_path_len
] = '/';
760 rel_path_ptr
= rel_path
+ rel_path_len
;
762 while((entry
= readdir(dir
)) != NULL
) {
764 if(entry
->d_name
[0] == '.') continue;
766 strncpy(path_ptr
, entry
->d_name
, PATH_MAX
- path_len
);
767 strncpy(rel_path_ptr
, entry
->d_name
, PATH_MAX
- rel_path_len
);
769 ret
= stat(path
, &stat_buf
);
775 g_debug("Tracefile file or directory : %s\n", path
);
777 if(strcmp(rel_path
, "/eventdefs") == 0) continue;
779 if(S_ISDIR(stat_buf
.st_mode
)) {
781 g_debug("Entering subdirectory...\n");
782 ret
= open_tracefiles(trace
, path
, rel_path
);
783 if(ret
< 0) continue;
784 } else if(S_ISREG(stat_buf
.st_mode
)) {
789 if(get_tracefile_name_number(rel_path
, &name
, &num
))
790 continue; /* invalid name */
792 g_debug("Opening file.\n");
793 if(ltt_tracefile_open(trace
, path
, &tmp_tf
)) {
794 g_info("Error opening tracefile %s", path
);
796 continue; /* error opening the tracefile : bad magic number ? */
799 g_debug("Tracefile name is %s and number is %u",
800 g_quark_to_string(name
), num
);
802 tmp_tf
.cpu_online
= 1;
803 tmp_tf
.cpu_num
= num
;
806 group
= g_datalist_id_get_data(&trace
->tracefiles
, name
);
808 /* Elements are automatically cleared when the array is allocated.
809 * It makes the cpu_online variable set to 0 : cpu offline, by default.
811 group
= g_array_sized_new (FALSE
, TRUE
, sizeof(LttTracefile
), 10);
812 g_datalist_id_set_data_full(&trace
->tracefiles
, name
,
813 group
, ltt_tracefile_group_destroy
);
816 /* Add the per cpu tracefile to the named group */
817 unsigned int old_len
= group
->len
;
819 group
= g_array_set_size(group
, num
+1);
820 g_array_index (group
, LttTracefile
, num
) = tmp_tf
;
830 /* ltt_get_facility_description
832 * Opens the file corresponding to the requested facility (identified by fac_id
835 * The name searched is : %trace root%/eventdefs/facname_checksum.xml
837 * Returns 0 on success, or 1 on failure.
840 static int ltt_get_facility_description(LttFacility
*f
,
842 LttTracefile
*fac_tf
)
844 char desc_file_name
[PATH_MAX
];
849 text
= g_quark_to_string(t
->pathname
);
850 textlen
= strlen(text
);
852 if(textlen
>= PATH_MAX
) goto name_error
;
853 strcpy(desc_file_name
, text
);
855 text
= "/eventdefs/";
856 textlen
+=strlen(text
);
857 if(textlen
>= PATH_MAX
) goto name_error
;
858 strcat(desc_file_name
, text
);
860 text
= g_quark_to_string(f
->name
);
861 textlen
+=strlen(text
);
862 if(textlen
>= PATH_MAX
) goto name_error
;
863 strcat(desc_file_name
, text
);
866 textlen
+=strlen(text
);
867 if(textlen
>= PATH_MAX
) goto name_error
;
868 strcat(desc_file_name
, text
);
870 err
= snprintf(desc_file_name
+textlen
, PATH_MAX
-textlen
-1,
872 if(err
< 0) goto name_error
;
874 textlen
=strlen(desc_file_name
);
878 textlen
+=strlen(text
);
879 if(textlen
>= PATH_MAX
) goto name_error
;
880 strcat(desc_file_name
, text
);
882 err
= ltt_facility_open(f
, t
, desc_file_name
);
883 if(err
) goto facility_error
;
892 static void ltt_fac_ids_destroy(gpointer data
)
894 GArray
*fac_ids
= (GArray
*)data
;
896 g_array_free(fac_ids
, TRUE
);
900 /* Presumes the tracefile is already seeked at the beginning. It makes sense,
901 * because it must be done just after the opening */
902 static int ltt_process_facility_tracefile(LttTracefile
*tf
)
911 err
= ltt_tracefile_read_seek(tf
);
912 if(err
== EPERM
) goto seek_error
;
913 else if(err
== ERANGE
) break; /* End of tracefile */
915 err
= ltt_tracefile_read_update_event(tf
);
916 if(err
) goto update_error
;
918 /* We are on a facility load/or facility unload/ or heartbeat event */
920 * * facility 0 is hardcoded : this is the core facility. It will be shown
921 * in the facility array though, and is shown as "loaded builtin" in the
923 * It contains event :
925 * 1 : facility unload
926 * 2 : state dump facility load
929 if(tf
->event
.facility_id
!= LTT_FACILITY_CORE
) {
930 /* Should only contain core facility */
931 g_warning("Error in processing facility file %s, "
932 "should not contain facility id %u.", g_quark_to_string(tf
->name
),
933 tf
->event
.facility_id
);
938 struct LttFacilityLoad
*fac_load_data
;
939 struct LttStateDumpFacilityLoad
*fac_state_dump_load_data
;
943 switch((enum ltt_core_events
)tf
->event
.event_id
) {
944 case LTT_EVENT_FACILITY_LOAD
:
945 fac_name
= (char*)(tf
->event
.data
);
946 g_debug("Doing LTT_EVENT_FACILITY_LOAD of facility %s",
949 (struct LttFacilityLoad
*)
950 (tf
->event
.data
+ strlen(fac_name
) + 1);
951 fac
= &g_array_index (tf
->trace
->facilities_by_num
, LttFacility
,
952 ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
));
953 g_assert(fac
->exists
== 0);
954 fac
->name
= g_quark_from_string(fac_name
);
955 fac
->checksum
= ltt_get_uint32(LTT_GET_BO(tf
),
956 &fac_load_data
->checksum
);
957 fac
->id
= ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
);
958 fac
->pointer_size
= ltt_get_uint32(LTT_GET_BO(tf
),
959 &fac_load_data
->pointer_size
);
960 fac
->long_size
= ltt_get_uint32(LTT_GET_BO(tf
),
961 &fac_load_data
->long_size
);
962 fac
->size_t_size
= ltt_get_uint32(LTT_GET_BO(tf
),
963 &fac_load_data
->size_t_size
);
964 fac
->alignment
= ltt_get_uint32(LTT_GET_BO(tf
),
965 &fac_load_data
->alignment
);
967 if(ltt_get_facility_description(fac
, tf
->trace
, tf
))
968 continue; /* error opening description */
970 fac
->trace
= tf
->trace
;
972 /* Preset the field offsets */
973 for(i
=0; i
<fac
->events
->len
; i
++){
974 et
= &g_array_index(fac
->events
, LttEventType
, i
);
975 set_fields_offsets(tf
, et
);
980 fac_ids
= g_datalist_id_get_data(&tf
->trace
->facilities_by_name
,
982 if(fac_ids
== NULL
) {
983 fac_ids
= g_array_sized_new (FALSE
, TRUE
, sizeof(guint
), 1);
984 g_datalist_id_set_data_full(&tf
->trace
->facilities_by_name
,
986 fac_ids
, ltt_fac_ids_destroy
);
988 g_array_append_val(fac_ids
, fac
->id
);
991 case LTT_EVENT_FACILITY_UNLOAD
:
992 g_debug("Doing LTT_EVENT_FACILITY_UNLOAD");
993 /* We don't care about unload : facilities ID are valid for the whole
994 * trace. They simply won't be used after the unload. */
996 case LTT_EVENT_STATE_DUMP_FACILITY_LOAD
:
997 fac_name
= (char*)(tf
->event
.data
);
998 g_debug("Doing LTT_EVENT_STATE_DUMP_FACILITY_LOAD of facility %s",
1000 fac_state_dump_load_data
=
1001 (struct LttStateDumpFacilityLoad
*)
1002 (tf
->event
.data
+ strlen(fac_name
) + 1);
1003 fac
= &g_array_index (tf
->trace
->facilities_by_num
, LttFacility
,
1004 ltt_get_uint32(LTT_GET_BO(tf
), &fac_state_dump_load_data
->id
));
1005 g_assert(fac
->exists
== 0);
1006 fac
->name
= g_quark_from_string(fac_name
);
1007 fac
->checksum
= ltt_get_uint32(LTT_GET_BO(tf
),
1008 &fac_state_dump_load_data
->checksum
);
1009 fac
->id
= fac_state_dump_load_data
->id
;
1010 fac
->pointer_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1011 &fac_state_dump_load_data
->pointer_size
);
1012 fac
->long_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1013 &fac_state_dump_load_data
->long_size
);
1014 fac
->size_t_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1015 &fac_state_dump_load_data
->size_t_size
);
1016 fac
->alignment
= ltt_get_uint32(LTT_GET_BO(tf
),
1017 &fac_state_dump_load_data
->alignment
);
1018 if(ltt_get_facility_description(fac
, tf
->trace
, tf
))
1019 continue; /* error opening description */
1021 fac
->trace
= tf
->trace
;
1023 /* Preset the field offsets */
1024 for(i
=0; i
<fac
->events
->len
; i
++){
1025 et
= &g_array_index(fac
->events
, LttEventType
, i
);
1026 set_fields_offsets(tf
, et
);
1031 fac_ids
= g_datalist_id_get_data(&tf
->trace
->facilities_by_name
,
1033 if(fac_ids
== NULL
) {
1034 fac_ids
= g_array_sized_new (FALSE
, TRUE
, sizeof(guint
), 1);
1035 g_datalist_id_set_data_full(&tf
->trace
->facilities_by_name
,
1037 fac_ids
, ltt_fac_ids_destroy
);
1039 g_array_append_val(fac_ids
, fac
->id
);
1042 case LTT_EVENT_HEARTBEAT
:
1045 g_warning("Error in processing facility file %s, "
1046 "unknown event id %hhu in core facility.",
1047 g_quark_to_string(tf
->name
),
1048 tf
->event
.event_id
);
1050 goto event_id_error
;
1056 /* Error handling */
1061 g_warning("An error occured in facility tracefile parsing");
1066 LttTrace
*ltt_trace_open(const gchar
*pathname
)
1068 gchar abs_path
[PATH_MAX
];
1073 struct ltt_block_start_header
*header
;
1075 struct dirent
*entry
;
1076 guint control_found
= 0;
1077 guint eventdefs_found
= 0;
1078 struct stat stat_buf
;
1079 gchar path
[PATH_MAX
];
1081 t
= g_new(LttTrace
, 1);
1082 if(!t
) goto alloc_error
;
1084 get_absolute_pathname(pathname
, abs_path
);
1085 t
->pathname
= g_quark_from_string(abs_path
);
1087 g_datalist_init(&t
->tracefiles
);
1089 /* Test to see if it looks like a trace */
1090 dir
= opendir(abs_path
);
1095 while((entry
= readdir(dir
)) != NULL
) {
1096 strcpy(path
, abs_path
);
1098 strcat(path
, entry
->d_name
);
1099 ret
= stat(path
, &stat_buf
);
1104 if(S_ISDIR(stat_buf
.st_mode
)) {
1105 if(strcmp(entry
->d_name
, "control") == 0) {
1108 if(strcmp(entry
->d_name
, "eventdefs") == 0) {
1109 eventdefs_found
= 1;
1115 if(!control_found
|| !eventdefs_found
) goto find_error
;
1117 /* Open all the tracefiles */
1118 if(open_tracefiles(t
, abs_path
, "")) {
1119 g_warning("Error opening tracefile %s", abs_path
);
1123 /* Prepare the facilities containers : array and mapping */
1124 /* Array is zeroed : the "exists" field is set to false by default */
1125 t
->facilities_by_num
= g_array_sized_new (FALSE
,
1126 TRUE
, sizeof(LttFacility
),
1128 t
->facilities_by_num
= g_array_set_size(t
->facilities_by_num
, NUM_FACILITIES
);
1130 g_datalist_init(&t
->facilities_by_name
);
1132 /* Parse each trace control/facilitiesN files : get runtime fac. info */
1133 group
= g_datalist_id_get_data(&t
->tracefiles
, LTT_TRACEFILE_NAME_FACILITIES
);
1135 g_error("Trace %s has no facility tracefile", abs_path
);
1137 goto facilities_error
;
1140 /* Get the trace information for the control/facility 0 tracefile */
1141 g_assert(group
->len
> 0);
1142 tf
= &g_array_index (group
, LttTracefile
, 0);
1143 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
1144 g_assert(parse_trace_header(header
->trace
,
1147 t
->num_cpu
= group
->len
;
1149 for(i
=0; i
<group
->len
; i
++) {
1150 tf
= &g_array_index (group
, LttTracefile
, i
);
1151 if(ltt_process_facility_tracefile(tf
))
1152 goto facilities_error
;
1157 /* Error handling */
1159 g_datalist_clear(&t
->facilities_by_name
);
1160 g_array_free(t
->facilities_by_num
, TRUE
);
1162 g_datalist_clear(&t
->tracefiles
);
1170 GQuark
ltt_trace_name(const LttTrace
*t
)
1176 /******************************************************************************
1177 * When we copy a trace, we want all the opening actions to happen again :
1178 * the trace will be reopened and totally independant from the original.
1179 * That's why we call ltt_trace_open.
1180 *****************************************************************************/
1181 LttTrace
*ltt_trace_copy(LttTrace
*self
)
1183 return ltt_trace_open(g_quark_to_string(self
->pathname
));
1186 void ltt_trace_close(LttTrace
*t
)
1191 for(i
=0; i
<t
->facilities_by_num
->len
; i
++) {
1192 fac
= &g_array_index (t
->facilities_by_num
, LttFacility
, i
);
1194 ltt_facility_close(fac
);
1197 g_datalist_clear(&t
->facilities_by_name
);
1198 g_array_free(t
->facilities_by_num
, TRUE
);
1199 g_datalist_clear(&t
->tracefiles
);
1204 /*****************************************************************************
1205 *Get the system description of the trace
1206 ****************************************************************************/
1208 LttFacility
*ltt_trace_facility_by_id(LttTrace
*t
, guint8 id
)
1210 g_assert(id
< t
->facilities_by_num
->len
);
1211 return &g_array_index(t
->facilities_by_num
, LttFacility
, id
);
1214 /* ltt_trace_facility_get_by_name
1216 * Returns the GArray of facility indexes. All the fac_ids that matches the
1217 * requested facility name.
1219 * If name is not found, returns NULL.
1221 GArray
*ltt_trace_facility_get_by_name(LttTrace
*t
, GQuark name
)
1223 return g_datalist_id_get_data(&t
->facilities_by_name
, name
);
1226 /*****************************************************************************
1227 * Functions to discover all the event types in the trace
1228 ****************************************************************************/
1231 unsigned ltt_trace_eventtype_number(LttTrace
*t
)
1235 unsigned int num
= t
->facility_number
;
1239 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
1240 count
+= f
->event_number
;
1247 //use an iteration on all the trace facilities, and inside iteration on all the
1248 //event types in each facilities instead.
1249 LttEventType
*ltt_trace_eventtype_get(LttTrace
*t
, unsigned evId
)
1251 LttEventType
*event_type
;
1254 f
= ltt_trace_facility_by_id(t
,evId
);
1256 if(unlikely(!f
)) event_type
= NULL
;
1257 else event_type
= f
->events
[evId
- f
->base_id
];
1264 /*****************************************************************************
1265 * ltt_trace_find_tracefile
1267 * Find a tracefile by name and index in the group.
1269 * Returns a pointer to the tracefiles, else NULL.
1270 ****************************************************************************/
1272 LttTracefile
*ltt_trace_find_tracefile(LttTrace
*t
, const gchar
*name
)
1277 /*****************************************************************************
1278 * Get the start time and end time of the trace
1279 ****************************************************************************/
1281 static void ltt_tracefile_time_span_get(LttTracefile
*tf
,
1282 LttTime
*start
, LttTime
*end
)
1286 err
= map_block(tf
, 0);
1288 g_error("Can not map block");
1289 *start
= ltt_time_infinite
;
1291 *start
= tf
->buffer
.begin
.timestamp
;
1293 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1295 g_error("Can not map block");
1296 *end
= ltt_time_zero
;
1298 *end
= tf
->buffer
.end
.timestamp
;
1301 struct tracefile_time_span_get_args
{
1307 static void group_time_span_get(GQuark name
, gpointer data
, gpointer user_data
)
1309 struct tracefile_time_span_get_args
*args
=
1310 (struct tracefile_time_span_get_args
*)user_data
;
1312 GArray
*group
= (GArray
*)data
;
1318 for(i
=0; i
<group
->len
; i
++) {
1319 tf
= &g_array_index (group
, LttTracefile
, i
);
1320 if(tf
->cpu_online
) {
1321 ltt_tracefile_time_span_get(tf
, &tmp_start
, &tmp_end
);
1322 if(ltt_time_compare(*args
->start
, tmp_start
)>0) *args
->start
= tmp_start
;
1323 if(ltt_time_compare(*args
->end
, tmp_end
)<0) *args
->end
= tmp_end
;
1328 void ltt_trace_time_span_get(LttTrace
*t
, LttTime
*start
, LttTime
*end
)
1330 LttTime min_start
= ltt_time_infinite
;
1331 LttTime max_end
= ltt_time_zero
;
1332 struct tracefile_time_span_get_args args
= { t
, &min_start
, &max_end
};
1334 g_datalist_foreach(&t
->tracefiles
, &group_time_span_get
, &args
);
1336 if(start
!= NULL
) *start
= min_start
;
1337 if(end
!= NULL
) *end
= max_end
;
1342 /*****************************************************************************
1343 *Get the name of a tracefile
1344 ****************************************************************************/
1346 GQuark
ltt_tracefile_name(const LttTracefile
*tf
)
1351 GQuark
ltt_tracefile_long_name(const LttTracefile
*tf
)
1353 return tf
->long_name
;
1358 guint
ltt_tracefile_num(LttTracefile
*tf
)
1363 /*****************************************************************************
1364 * Get the number of blocks in the tracefile
1365 ****************************************************************************/
1367 guint
ltt_tracefile_block_number(LttTracefile
*tf
)
1369 return tf
->num_blocks
;
1373 /* Seek to the first event in a tracefile that has a time equal or greater than
1374 * the time passed in parameter.
1376 * If the time parameter is outside the tracefile time span, seek to the first
1377 * event or if after, return ERANGE.
1379 * If the time parameter is before the first event, we have to seek specially to
1382 * If the time is after the end of the trace, return ERANGE.
1384 * Do a binary search to find the right block, then a sequential search in the
1385 * block to find the event.
1387 * In the special case where the time requested fits inside a block that has no
1388 * event corresponding to the requested time, the first event of the next block
1391 * IMPORTANT NOTE : // FIXME everywhere...
1393 * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time :
1394 * you will jump over an event if you do.
1396 * Return value : 0 : no error, the tf->event can be used
1397 * ERANGE : time if after the last event of the trace
1398 * otherwise : this is an error.
1402 int ltt_tracefile_seek_time(LttTracefile
*tf
, LttTime time
)
1406 unsigned int block_num
, high
, low
;
1408 /* seek at the beginning of trace */
1409 err
= map_block(tf
, 0); /* First block */
1411 g_error("Can not map block");
1415 /* If the time is lower or equal the beginning of the trace,
1416 * go to the first event. */
1417 if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) <= 0) {
1418 ret
= ltt_tracefile_read(tf
);
1419 if(ret
== ERANGE
) goto range
;
1420 else if (ret
) goto fail
;
1421 goto found
; /* There is either no event in the trace or the event points
1422 to the first event in the trace */
1425 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1427 g_error("Can not map block");
1431 /* If the time is after the end of the trace, return ERANGE. */
1432 if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) > 0) {
1436 /* Binary search the block */
1437 high
= tf
->num_blocks
- 1;
1441 block_num
= ((high
-low
) / 2) + low
;
1443 err
= map_block(tf
, block_num
);
1445 g_error("Can not map block");
1449 /* We cannot divide anymore : this is what would happen if the time
1450 * requested was exactly between two consecutive buffers'end and start
1451 * timestamps. This is also what would happend if we didn't deal with out
1452 * of span cases prior in this function. */
1453 /* The event is right in the buffer!
1454 * (or in the next buffer first event) */
1456 ret
= ltt_tracefile_read(tf
);
1457 if(ret
== ERANGE
) goto range
; /* ERANGE or EPERM */
1458 else if(ret
) goto fail
;
1460 if(ltt_time_compare(time
, tf
->event
.event_time
) <= 0)
1464 } else if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) < 0) {
1465 /* go to lower part */
1466 high
= block_num
- 1;
1467 } else if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) > 0) {
1468 /* go to higher part */
1469 low
= block_num
+ 1;
1470 } else {/* The event is right in the buffer!
1471 (or in the next buffer first event) */
1473 ret
= ltt_tracefile_read(tf
);
1474 if(ret
== ERANGE
) goto range
; /* ERANGE or EPERM */
1475 else if(ret
) goto fail
;
1477 if(ltt_time_compare(time
, tf
->event
.event_time
) <= 0)
1489 /* Error handling */
1491 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1492 g_quark_to_string(tf
->name
));
1497 int ltt_tracefile_seek_position(LttTracefile
*tf
, const LttEventPosition
*ep
) {
1501 if(ep
->tracefile
!= tf
) {
1505 err
= map_block(tf
, ep
->block
);
1507 g_error("Can not map block");
1511 tf
->event
.offset
= ep
->offset
;
1513 err
= ltt_tracefile_read_update_event(tf
);
1515 err
= ltt_tracefile_read_op(tf
);
1521 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1522 g_quark_to_string(tf
->name
));
1526 /* Calculate the real event time based on the buffer boundaries */
1527 LttTime
ltt_interpolate_time(LttTracefile
*tf
, LttEvent
*event
)
1531 g_assert(tf
->trace
->has_tsc
);
1533 // time = ltt_time_from_uint64(
1534 // cycles_2_ns(tf, (guint64)(tf->buffer.tsc - tf->buffer.begin.cycle_count)));
1535 time
= ltt_time_from_uint64((tf
->buffer
.tsc
- tf
->trace
->start_tsc
) * 1000000
1536 / (double)tf
->trace
->start_freq
);
1537 //time = ltt_time_add(tf->buffer.begin.timestamp, time);
1538 time
= ltt_time_add(tf
->trace
->start_time
, time
);
1544 /* Get the current event of the tracefile : valid until the next read */
1545 LttEvent
*ltt_tracefile_get_event(LttTracefile
*tf
)
1552 /*****************************************************************************
1554 * ltt_tracefile_read : Read the next event in the tracefile
1559 * Returns 0 if an event can be used in tf->event.
1560 * Returns ERANGE on end of trace. The event in tf->event still can be used
1561 * (if the last block was not empty).
1562 * Returns EPERM on error.
1564 * This function does make the tracefile event structure point to the event
1565 * currently pointed to by the tf->event.
1567 * Note : you must call a ltt_tracefile_seek to the beginning of the trace to
1568 * reinitialize it after an error if you want results to be coherent.
1569 * It would be the case if a end of trace last buffer has no event : the end
1570 * of trace wouldn't be returned, but an error.
1571 * We make the assumption there is at least one event per buffer.
1572 ****************************************************************************/
1574 int ltt_tracefile_read(LttTracefile
*tf
)
1578 err
= ltt_tracefile_read_seek(tf
);
1580 err
= ltt_tracefile_read_update_event(tf
);
1582 err
= ltt_tracefile_read_op(tf
);
1588 int ltt_tracefile_read_seek(LttTracefile
*tf
)
1592 /* Get next buffer until we finally have an event, or end of trace */
1594 err
= ltt_seek_next_event(tf
);
1595 if(unlikely(err
== ENOPROTOOPT
)) {
1599 /* Are we at the end of the buffer ? */
1601 if(unlikely(tf
->buffer
.index
== tf
->num_blocks
-1)){ /* end of trace ? */
1604 /* get next block */
1605 err
= map_block(tf
, tf
->buffer
.index
+ 1);
1607 g_error("Can not map block");
1611 } else break; /* We found an event ! */
1618 /* do specific operation on events */
1619 int ltt_tracefile_read_op(LttTracefile
*tf
)
1625 /* do event specific operation */
1627 /* do something if its an heartbeat event : increment the heartbeat count */
1628 //if(event->facility_id == LTT_FACILITY_CORE)
1629 // if(event->event_id == LTT_EVENT_HEARTBEAT)
1630 // tf->cur_heart_beat_number++;
1636 /* same as ltt_tracefile_read, but does not seek to the next event nor call
1637 * event specific operation. */
1638 int ltt_tracefile_read_update_event(LttTracefile
*tf
)
1644 pos
= tf
->buffer
.head
+ event
->offset
;
1646 /* Read event header */
1650 if(tf
->trace
->has_tsc
) {
1651 if(tf
->trace
->has_heartbeat
) {
1652 event
->time
.timestamp
= ltt_get_uint32(LTT_GET_BO(tf
),
1654 /* 32 bits -> 64 bits tsc */
1655 /* note : still works for seek and non seek cases. */
1656 if(event
->time
.timestamp
< (0xFFFFFFFFULL
&tf
->buffer
.tsc
)) {
1657 tf
->buffer
.tsc
= ((tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1659 | (guint64
)event
->time
.timestamp
;
1660 event
->tsc
= tf
->buffer
.tsc
;
1663 tf
->buffer
.tsc
= (tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1664 | (guint64
)event
->time
.timestamp
;
1665 event
->tsc
= tf
->buffer
.tsc
;
1667 pos
+= sizeof(guint32
);
1669 event
->tsc
= ltt_get_uint64(LTT_GET_BO(tf
), pos
);
1670 tf
->buffer
.tsc
= event
->tsc
;
1671 pos
+= sizeof(guint64
);
1674 event
->event_time
= ltt_interpolate_time(tf
, event
);
1676 event
->time
.delta
.tv_sec
= 0;
1677 event
->time
.delta
.tv_nsec
= ltt_get_uint32(LTT_GET_BO(tf
),
1678 pos
) * NSEC_PER_USEC
;
1680 event
->tsc
= tf
->buffer
.tsc
;
1682 event
->event_time
= ltt_time_add(tf
->buffer
.begin
.timestamp
,
1684 pos
+= sizeof(guint32
);
1687 event
->facility_id
= *(guint8
*)pos
;
1688 pos
+= sizeof(guint8
);
1690 event
->event_id
= *(guint8
*)pos
;
1691 pos
+= sizeof(guint8
);
1693 event
->event_size
= ltt_get_uint16(LTT_GET_BO(tf
), pos
);
1694 pos
+= sizeof(guint16
);
1698 /* get the data size and update the event fields with the current
1700 ltt_update_event_size(tf
);
1706 /****************************************************************************
1708 * map_block : map a block from the file
1710 * lttdes : ltt trace file
1711 * whichBlock : the block which will be read
1714 * EINVAL : lseek fail
1715 * EIO : can not read from the file
1716 ****************************************************************************/
1718 static gint
map_block(LttTracefile
* tf
, guint block_num
)
1720 int page_size
= getpagesize();
1721 struct ltt_block_start_header
*header
;
1723 g_assert(block_num
< tf
->num_blocks
);
1725 if(tf
->buffer
.head
!= NULL
) {
1726 if(munmap(tf
->buffer
.head
, PAGE_ALIGN(tf
->buf_size
))) {
1727 g_warning("unmap size : %u\n",
1728 PAGE_ALIGN(tf
->buf_size
));
1729 perror("munmap error");
1735 /* Multiple of pages aligned head */
1736 tf
->buffer
.head
= mmap(0,
1737 PAGE_ALIGN(tf
->buf_size
),
1738 PROT_READ
, MAP_PRIVATE
, tf
->fd
,
1739 PAGE_ALIGN((off_t
)tf
->buf_size
* (off_t
)block_num
));
1741 if(tf
->buffer
.head
== MAP_FAILED
) {
1742 perror("Error in allocating memory for buffer of tracefile");
1746 g_assert( ( (guint
)tf
->buffer
.head
&(8-1) ) == 0); // make sure it's aligned.
1749 tf
->buffer
.index
= block_num
;
1751 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
1754 tf
->buffer
.begin
.timestamp
= ltt_time_add(
1755 ltt_time_from_uint64(
1756 ltt_get_uint64(LTT_GET_BO(tf
),
1757 &header
->begin
.timestamp
)
1758 - tf
->trace
->start_monotonic
),
1759 tf
->trace
->start_time
);
1761 //g_debug("block %u begin : %lu.%lu", block_num,
1762 // tf->buffer.begin.timestamp.tv_sec, tf->buffer.begin.timestamp.tv_nsec);
1763 tf
->buffer
.begin
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1764 &header
->begin
.cycle_count
);
1765 tf
->buffer
.begin
.freq
= ltt_get_uint64(LTT_GET_BO(tf
),
1766 &header
->begin
.freq
);
1767 tf
->buffer
.begin
.timestamp
= ltt_time_add(
1768 ltt_time_from_uint64(
1769 (tf
->buffer
.begin
.cycle_count
1770 - tf
->trace
->start_tsc
) * 1000000
1771 / (double)tf
->trace
->start_freq
),
1772 tf
->trace
->start_time
);
1775 tf
->buffer
.end
.timestamp
= ltt_time_add(
1776 ltt_time_from_uint64(
1777 ltt_get_uint64(LTT_GET_BO(tf
),
1778 &header
->end
.timestamp
)
1779 - tf
->trace
->start_monotonic
),
1780 tf
->trace
->start_time
);
1782 //g_debug("block %u end : %lu.%lu", block_num,
1783 // tf->buffer.end.timestamp.tv_sec, tf->buffer.end.timestamp.tv_nsec);
1784 tf
->buffer
.end
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1785 &header
->end
.cycle_count
);
1786 tf
->buffer
.end
.freq
= ltt_get_uint64(LTT_GET_BO(tf
),
1788 tf
->buffer
.lost_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1789 &header
->lost_size
);
1790 tf
->buffer
.end
.timestamp
= ltt_time_add(
1791 ltt_time_from_uint64(
1792 (tf
->buffer
.end
.cycle_count
1793 - tf
->trace
->start_tsc
) * 1000000
1794 / (double)tf
->trace
->start_freq
),
1795 tf
->trace
->start_time
);
1797 tf
->buffer
.tsc
= tf
->buffer
.begin
.cycle_count
;
1798 tf
->event
.tsc
= tf
->buffer
.tsc
;
1799 tf
->buffer
.freq
= tf
->buffer
.begin
.freq
;
1802 * eventually support variable buffer size : will need a partial pre-read of
1803 * the headers to create an index when we open the trace... eventually. */
1804 g_assert(tf
->buf_size
== ltt_get_uint32(LTT_GET_BO(tf
),
1805 &header
->buf_size
));
1807 /* Now that the buffer is mapped, calculate the time interpolation for the
1810 // tf->buffer.nsecs_per_cycle = calc_nsecs_per_cycle(tf);
1811 //tf->buffer.cyc2ns_scale = calc_nsecs_per_cycle(tf);
1813 /* Make the current event point to the beginning of the buffer :
1814 * it means that the event read must get the first event. */
1815 tf
->event
.tracefile
= tf
;
1816 tf
->event
.block
= block_num
;
1817 tf
->event
.offset
= 0;
1826 /* It will update the fields offsets too */
1827 void ltt_update_event_size(LttTracefile
*tf
)
1831 /* Specific handling of core events : necessary to read the facility control
1833 LttFacility
*f
= ltt_trace_get_facility_by_num(tf
->trace
,
1834 tf
->event
.facility_id
);
1836 if(likely(tf
->event
.facility_id
== LTT_FACILITY_CORE
)) {
1837 switch((enum ltt_core_events
)tf
->event
.event_id
) {
1838 case LTT_EVENT_FACILITY_LOAD
:
1839 size
= strlen((char*)tf
->event
.data
) + 1;
1840 //g_debug("Update Event facility load of facility %s", (char*)tf->event.data);
1841 size
+= sizeof(struct LttFacilityLoad
);
1843 case LTT_EVENT_FACILITY_UNLOAD
:
1844 //g_debug("Update Event facility unload");
1845 size
= sizeof(struct LttFacilityUnload
);
1847 case LTT_EVENT_STATE_DUMP_FACILITY_LOAD
:
1848 size
= strlen((char*)tf
->event
.data
) + 1;
1849 //g_debug("Update Event facility load state dump of facility %s",
1850 // (char*)tf->event.data);
1851 size
+= sizeof(struct LttStateDumpFacilityLoad
);
1853 case LTT_EVENT_HEARTBEAT
:
1854 //g_debug("Update Event heartbeat");
1855 size
= sizeof(TimeHeartbeat
);
1858 g_warning("Error in getting event size : tracefile %s, "
1859 "unknown event id %hhu in core facility.",
1860 g_quark_to_string(tf
->name
),
1861 tf
->event
.event_id
);
1862 goto event_id_error
;
1867 g_error("Unknown facility %hhu (0x%hhx) in tracefile %s",
1868 tf
->event
.facility_id
,
1869 tf
->event
.facility_id
,
1870 g_quark_to_string(tf
->name
));
1871 goto facility_error
;
1874 LttEventType
*event_type
=
1875 ltt_facility_eventtype_get(f
, tf
->event
.event_id
);
1878 g_error("Unknown event id %hhu in facility %s in tracefile %s",
1880 g_quark_to_string(f
->name
),
1881 g_quark_to_string(tf
->name
));
1882 goto event_type_error
;
1885 if(event_type
->root_field
)
1886 size
= get_field_type_size(tf
, event_type
,
1887 0, 0, event_type
->root_field
, tf
->event
.data
);
1891 //g_debug("Event root field : f.e %hhu.%hhu size %zd",
1892 // tf->event.facility_id,
1893 // tf->event.event_id, size);
1896 tf
->event
.data_size
= size
;
1898 /* Check consistency between kernel and LTTV structure sizes */
1899 g_assert(tf
->event
.data_size
== tf
->event
.event_size
);
1906 tf
->event
.data_size
= 0;
1910 /* Take the tf current event offset and use the event facility id and event id
1911 * to figure out where is the next event offset.
1913 * This is an internal function not aiming at being used elsewhere : it will
1914 * not jump over the current block limits. Please consider using
1915 * ltt_tracefile_read to do this.
1917 * Returns 0 on success
1918 * ERANGE if we are at the end of the buffer.
1919 * ENOPROTOOPT if an error occured when getting the current event size.
1921 static int ltt_seek_next_event(LttTracefile
*tf
)
1926 /* seek over the buffer header if we are at the buffer start */
1927 if(tf
->event
.offset
== 0) {
1928 tf
->event
.offset
+= tf
->buffer_header_size
;
1930 if(tf
->event
.offset
== tf
->buf_size
- tf
->buffer
.lost_size
) {
1937 pos
= tf
->event
.data
;
1939 if(tf
->event
.data_size
< 0) goto error
;
1941 pos
+= (size_t)tf
->event
.data_size
;
1943 tf
->event
.offset
= pos
- tf
->buffer
.head
;
1945 if(tf
->event
.offset
== tf
->buf_size
- tf
->buffer
.lost_size
) {
1949 g_assert(tf
->event
.offset
< tf
->buf_size
- tf
->buffer
.lost_size
);
1955 g_error("Error in ltt_seek_next_event for tracefile %s",
1956 g_quark_to_string(tf
->name
));
1961 /*****************************************************************************
1963 * calc_nsecs_per_cycle : calculate nsecs per cycle for current block
1965 * 1.0 / (freq(khz) *1000) * 1000000000
1968 ****************************************************************************/
1969 /* from timer_tsc.c */
1970 #define CYC2NS_SCALE_FACTOR 10
1971 static guint32
calc_nsecs_per_cycle(LttTracefile
* tf
)
1973 //return 1e6 / (double)tf->buffer.freq;
1974 guint32 cpu_mhz
= tf
->buffer
.freq
/ 1000;
1975 guint32 cyc2ns_scale
= (1000 << CYC2NS_SCALE_FACTOR
)/cpu_mhz
;
1977 return cyc2ns_scale
;
1978 // return 1e6 / (double)tf->buffer.freq;
1981 static guint64
cycles_2_ns(LttTracefile
*tf
, guint64 cycles
)
1983 return (cycles
* tf
->buffer
.cyc2ns_scale
) >> CYC2NS_SCALE_FACTOR
;
1988 void setFieldsOffset(LttTracefile
*tf
, LttEventType
*evT
,void *evD
)
1990 LttField
* rootFld
= evT
->root_field
;
1991 // rootFld->base_address = evD;
1994 rootFld
->field_size
= getFieldtypeSize(tf
, evT
->facility
,
1995 evT
, 0,0,rootFld
, evD
);
1999 /*****************************************************************************
2001 * set_fields_offsets : set the precomputable offset of the fields
2003 * tracefile : opened trace file
2004 * event_type : the event type
2005 ****************************************************************************/
2007 void set_fields_offsets(LttTracefile
*tf
, LttEventType
*event_type
)
2009 LttField
*field
= event_type
->root_field
;
2010 enum field_status fixed_root
= FIELD_FIXED
, fixed_parent
= FIELD_FIXED
;
2013 preset_field_type_size(tf
, event_type
, 0, 0,
2014 &fixed_root
, &fixed_parent
,
2020 /*****************************************************************************
2022 * preset_field_type_size : set the fixed sizes of the field type
2025 * event_type : event type
2026 * offset_root : offset from the root
2027 * offset_parent : offset from the parent
2028 * fixed_root : Do we know a fixed offset to the root ?
2029 * fixed_parent : Do we know a fixed offset to the parent ?
2031 ****************************************************************************/
2032 void preset_field_type_size(LttTracefile
*tf
, LttEventType
*event_type
,
2033 off_t offset_root
, off_t offset_parent
,
2034 enum field_status
*fixed_root
, enum field_status
*fixed_parent
,
2037 enum field_status local_fixed_root
, local_fixed_parent
;
2041 g_assert(field
->fixed_root
== FIELD_UNKNOWN
);
2042 g_assert(field
->fixed_parent
== FIELD_UNKNOWN
);
2043 g_assert(field
->fixed_size
== FIELD_UNKNOWN
);
2045 type
= field
->field_type
;
2047 field
->fixed_root
= *fixed_root
;
2048 if(field
->fixed_root
== FIELD_FIXED
)
2049 field
->offset_root
= offset_root
;
2051 field
->offset_root
= 0;
2053 field
->fixed_parent
= *fixed_parent
;
2054 if(field
->fixed_parent
== FIELD_FIXED
)
2055 field
->offset_parent
= offset_parent
;
2057 field
->offset_parent
= 0;
2059 size_t current_root_offset
;
2060 size_t current_offset
;
2061 enum field_status current_child_status
, final_child_status
;
2064 switch(type
->type_class
) {
2069 field
->field_size
= ltt_type_size(tf
->trace
, type
);
2070 field
->fixed_size
= FIELD_FIXED
;
2073 field
->field_size
= (off_t
)event_type
->facility
->pointer_size
;
2074 field
->fixed_size
= FIELD_FIXED
;
2078 field
->field_size
= (off_t
)event_type
->facility
->long_size
;
2079 field
->fixed_size
= FIELD_FIXED
;
2084 field
->field_size
= (off_t
)event_type
->facility
->size_t_size
;
2085 field
->fixed_size
= FIELD_FIXED
;
2088 local_fixed_root
= FIELD_VARIABLE
;
2089 local_fixed_parent
= FIELD_VARIABLE
;
2090 preset_field_type_size(tf
, event_type
,
2092 &local_fixed_root
, &local_fixed_parent
,
2094 field
->fixed_size
= FIELD_VARIABLE
;
2095 field
->field_size
= 0;
2096 *fixed_root
= FIELD_VARIABLE
;
2097 *fixed_parent
= FIELD_VARIABLE
;
2100 field
->fixed_size
= FIELD_VARIABLE
;
2101 field
->field_size
= 0;
2102 *fixed_root
= FIELD_VARIABLE
;
2103 *fixed_parent
= FIELD_VARIABLE
;
2106 local_fixed_root
= FIELD_VARIABLE
;
2107 local_fixed_parent
= FIELD_VARIABLE
;
2108 preset_field_type_size(tf
, event_type
,
2110 &local_fixed_root
, &local_fixed_parent
,
2112 field
->fixed_size
= field
->child
[0]->fixed_size
;
2113 if(field
->fixed_size
== FIELD_FIXED
) {
2114 field
->field_size
= type
->element_number
* field
->child
[0]->field_size
;
2116 field
->field_size
= 0;
2117 *fixed_root
= FIELD_VARIABLE
;
2118 *fixed_parent
= FIELD_VARIABLE
;
2122 current_root_offset
= field
->offset_root
;
2124 current_child_status
= FIELD_FIXED
;
2125 for(i
=0;i
<type
->element_number
;i
++) {
2126 preset_field_type_size(tf
, event_type
,
2127 current_root_offset
, current_offset
,
2128 fixed_root
, ¤t_child_status
,
2130 if(current_child_status
== FIELD_FIXED
) {
2131 current_root_offset
+= field
->child
[i
]->field_size
;
2132 current_offset
+= field
->child
[i
]->field_size
;
2134 current_root_offset
= 0;
2138 if(current_child_status
!= FIELD_FIXED
) {
2139 *fixed_parent
= current_child_status
;
2140 field
->field_size
= 0;
2141 field
->fixed_size
= current_child_status
;
2143 field
->field_size
= current_offset
;
2144 field
->fixed_size
= FIELD_FIXED
;
2148 current_root_offset
= field
->offset_root
;
2151 final_child_status
= FIELD_FIXED
;
2152 for(i
=0;i
<type
->element_number
;i
++) {
2153 enum field_status current_root_child_status
= FIELD_FIXED
;
2154 enum field_status current_child_status
= FIELD_FIXED
;
2155 preset_field_type_size(tf
, event_type
,
2156 current_root_offset
, current_offset
,
2157 ¤t_root_child_status
, ¤t_child_status
,
2159 if(current_child_status
!= FIELD_FIXED
)
2160 final_child_status
= current_child_status
;
2162 max_size
= max(max_size
, field
->child
[i
]->field_size
);
2164 if(final_child_status
!= FIELD_FIXED
) {
2165 *fixed_root
= final_child_status
;
2166 *fixed_parent
= final_child_status
;
2167 field
->field_size
= 0;
2168 field
->fixed_size
= current_child_status
;
2170 field
->field_size
= max_size
;
2171 field
->fixed_size
= FIELD_FIXED
;
2179 /*****************************************************************************
2181 * check_fields_compatibility : Check for compatibility between two fields :
2182 * do they use the same inner structure ?
2184 * event_type1 : event type
2185 * event_type2 : event type
2188 *Returns : 0 if identical
2190 ****************************************************************************/
2191 gint
check_fields_compatibility(LttEventType
*event_type1
,
2192 LttEventType
*event_type2
,
2193 LttField
*field1
, LttField
*field2
)
2195 guint different
= 0;
2200 if(field1
== NULL
) {
2201 if(field2
== NULL
) goto end
;
2206 } else if(field2
== NULL
) {
2211 g_assert(field1
->fixed_root
!= FIELD_UNKNOWN
);
2212 g_assert(field2
->fixed_root
!= FIELD_UNKNOWN
);
2213 g_assert(field1
->fixed_parent
!= FIELD_UNKNOWN
);
2214 g_assert(field2
->fixed_parent
!= FIELD_UNKNOWN
);
2215 g_assert(field1
->fixed_size
!= FIELD_UNKNOWN
);
2216 g_assert(field2
->fixed_size
!= FIELD_UNKNOWN
);
2218 type1
= field1
->field_type
;
2219 type2
= field2
->field_type
;
2221 if(type1
->type_class
!= type2
->type_class
) {
2225 if(type1
->element_name
!= type2
->element_name
) {
2230 switch(type1
->type_class
) {
2240 if(field1
->field_size
!= field2
->field_size
) {
2246 if(type1
->element_number
!= type2
->element_number
) {
2250 for(i
=0;i
<type1
->element_number
;i
++) {
2251 if(type1
->enum_strings
[i
] != type2
->enum_strings
[i
]) {
2258 /* Two elements : size and child */
2259 g_assert(type1
->element_number
!= type2
->element_number
);
2260 for(i
=0;i
<type1
->element_number
;i
++) {
2261 if(check_fields_compatibility(event_type1
, event_type2
,
2262 field1
->child
[0], field2
->child
[0])) {
2271 if(field1
->field_size
!= field2
->field_size
) {
2275 /* Two elements : size and child */
2276 g_assert(type1
->element_number
!= type2
->element_number
);
2277 for(i
=0;i
<type1
->element_number
;i
++) {
2278 if(check_fields_compatibility(event_type1
, event_type2
,
2279 field1
->child
[0], field2
->child
[0])) {
2287 if(type1
->element_number
!= type2
->element_number
) {
2291 for(i
=0;i
<type1
->element_number
;i
++) {
2292 if(check_fields_compatibility(event_type1
, event_type2
,
2293 field1
->child
[0], field2
->child
[0])) {
2308 /*****************************************************************************
2310 * getFieldtypeSize: get the size of the field type (primitive type)
2313 * offsetRoot : offset from the root
2314 * offsetParent : offset from the parrent
2316 * evD : event data, it may be NULL
2318 * int : size of the field
2319 ****************************************************************************/
2321 static inline gint
getFieldtypeSize(LttTracefile
*tf
,
2322 LttEventType
* evT
, gint offsetRoot
,
2323 gint offsetParent
, LttField
* fld
, void *evD
)
2325 gint size
, size1
, element_number
, i
, offset1
, offset2
;
2326 LttType
* type
= fld
->field_type
;
2328 /* This likely has been tested with gcov : half of them.. */
2329 if(unlikely(fld
->field_fixed
== 1)){
2331 if(unlikely(fld
== evT
->root_field
)) {
2332 size
= fld
->field_size
;
2333 goto end_getFieldtypeSize
;
2337 /* From gcov profiling : half string, half struct, can we gain something
2338 * from that ? (Mathieu) */
2339 switch(type
->type_class
) {
2341 element_number
= (int) type
->element_number
;
2342 if(fld
->field_fixed
== -1){
2343 size
= getFieldtypeSize(tf
, evT
, offsetRoot
,
2344 0,fld
->child
[0], NULL
);
2345 if(size
== 0){ //has string or sequence
2346 fld
->field_fixed
= 0;
2348 fld
->field_fixed
= 1;
2349 size
*= element_number
;
2351 }else if(fld
->field_fixed
== 0){// has string or sequence
2353 for(i
=0;i
<element_number
;i
++){
2354 size
+= getFieldtypeSize(tf
, evT
, offsetRoot
+size
,size
,
2355 fld
->child
[0], evD
+size
);
2357 }else size
= fld
->field_size
;
2359 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2360 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2366 size1
= (int) ltt_type_size(fac
, type
);
2367 if(fld
->field_fixed
== -1){
2368 fld
->sequ_number_size
= size1
;
2369 fld
->field_fixed
= 0;
2370 size
= getFieldtypeSize(evT
, offsetRoot
,
2371 0,fld
->child
[0], NULL
);
2372 fld
->element_size
= size
;
2374 element_number
= getIntNumber(tf
,size1
,evD
);
2375 type
->element_number
= element_number
;
2376 if(fld
->element_size
> 0){
2377 size
= element_number
* fld
->element_size
;
2378 }else{//sequence has string or sequence
2380 for(i
=0;i
<element_number
;i
++){
2381 size
+= getFieldtypeSize(tf
, evT
,
2382 offsetRoot
+size
+size1
,size
+size1
,
2383 fld
->child
[0], evD
+size
+size1
);
2389 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2390 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2397 if(fld
->field_fixed
== -1){
2398 fld
->field_fixed
= 0;
2400 /* Hope my implementation is faster than strlen (Mathieu) */
2401 char *ptr
=(char*)evD
;
2403 /* from gcov : many many strings are empty, make it the common case.*/
2404 while(unlikely(*ptr
!= '\0')) { size
++; ptr
++; }
2405 //size = ptr - (char*)evD + 1; //include end : '\0'
2407 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2408 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2413 element_number
= (int) type
->element_number
;
2415 /* tested with gcov */
2416 if(unlikely(fld
->field_fixed
== -1)){
2417 offset1
= offsetRoot
;
2419 for(i
=0;i
<element_number
;i
++){
2420 size1
=getFieldtypeSize(tf
, evT
,offset1
,offset2
,
2421 fld
->child
[i
], NULL
);
2422 if(likely(size1
> 0 && size
>= 0)){
2424 if(likely(offset1
>= 0)) offset1
+= size1
;
2432 if(unlikely(size
== -1)){
2433 fld
->field_fixed
= 0;
2435 }else fld
->field_fixed
= 1;
2436 }else if(likely(fld
->field_fixed
== 0)){
2437 offset1
= offsetRoot
;
2439 for(i
=0;unlikely(i
<element_number
);i
++){
2440 size
=getFieldtypeSize(tf
, evT
, offset1
, offset2
,
2441 fld
->child
[i
], evD
+offset2
);
2446 }else size
= fld
->field_size
;
2447 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2448 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2452 if(unlikely(fld
->field_fixed
== -1)){
2453 size
= (int) ltt_type_size(LTT_GET_BO(tf
), type
);
2454 fld
->field_fixed
= 1;
2455 }else size
= fld
->field_size
;
2457 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2458 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2463 fld
->offset_root
= offsetRoot
;
2464 fld
->offset_parent
= offsetParent
;
2465 fld
->field_size
= size
;
2467 end_getFieldtypeSize
:
2473 /*****************************************************************************
2475 * ltt_get_int : get an integer number
2477 * reverse_byte_order: must we reverse the byte order ?
2478 * size : the size of the integer
2479 * ptr : the data pointer
2481 * gint64 : a 64 bits integer
2482 ****************************************************************************/
2484 gint64
ltt_get_int(gboolean reverse_byte_order
, gint size
, void *data
)
2489 case 1: val
= *((gint8
*)data
); break;
2490 case 2: val
= ltt_get_int16(reverse_byte_order
, data
); break;
2491 case 4: val
= ltt_get_int32(reverse_byte_order
, data
); break;
2492 case 8: val
= ltt_get_int64(reverse_byte_order
, data
); break;
2493 default: val
= ltt_get_int64(reverse_byte_order
, data
);
2494 g_critical("get_int : integer size %d unknown", size
);
2501 /*****************************************************************************
2503 * ltt_get_uint : get an unsigned integer number
2505 * reverse_byte_order: must we reverse the byte order ?
2506 * size : the size of the integer
2507 * ptr : the data pointer
2509 * guint64 : a 64 bits unsigned integer
2510 ****************************************************************************/
2512 guint64
ltt_get_uint(gboolean reverse_byte_order
, gint size
, void *data
)
2517 case 1: val
= *((gint8
*)data
); break;
2518 case 2: val
= ltt_get_uint16(reverse_byte_order
, data
); break;
2519 case 4: val
= ltt_get_uint32(reverse_byte_order
, data
); break;
2520 case 8: val
= ltt_get_uint64(reverse_byte_order
, data
); break;
2521 default: val
= ltt_get_uint64(reverse_byte_order
, data
);
2522 g_critical("get_uint : unsigned integer size %d unknown",
2531 /* get the node name of the system */
2533 char * ltt_trace_system_description_node_name (LttSystemDescription
* s
)
2535 return s
->node_name
;
2539 /* get the domain name of the system */
2541 char * ltt_trace_system_description_domain_name (LttSystemDescription
* s
)
2543 return s
->domain_name
;
2547 /* get the description of the system */
2549 char * ltt_trace_system_description_description (LttSystemDescription
* s
)
2551 return s
->description
;
2555 /* get the start time of the trace */
2557 LttTime
ltt_trace_system_description_trace_start_time(LttSystemDescription
*s
)
2559 return s
->trace_start
;
2563 LttTracefile
*ltt_tracefile_new()
2565 return g_new(LttTracefile
, 1);
2568 void ltt_tracefile_destroy(LttTracefile
*tf
)
2573 void ltt_tracefile_copy(LttTracefile
*dest
, const LttTracefile
*src
)
2578 /* Before library loading... */
2580 static void __attribute__((constructor
)) init(void)
2582 LTT_FACILITY_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
2583 LTT_EVENT_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
2585 LTT_TRACEFILE_NAME_FACILITIES
= g_quark_from_string("/control/facilities");