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
);
262 t
->start_time
.tv_nsec
*= 1000; /* microsec to nanosec */
264 t
->start_time_from_tsc
= ltt_time_from_uint64(
265 (double)t
->start_tsc
* 1000000.0 / (double)t
->start_freq
);
270 g_warning("Unsupported trace version : %hhu.%hhu",
271 any
->major_version
, any
->minor_version
);
277 g_warning("Unsupported trace version : %hhu.%hhu",
278 any
->major_version
, any
->minor_version
);
288 /*****************************************************************************
290 * ltt_tracefile_open : open a trace file, construct a LttTracefile
292 * t : the trace containing the tracefile
293 * fileName : path name of the trace file
294 * tf : the tracefile structure
296 * : 0 for success, -1 otherwise.
297 ****************************************************************************/
299 gint
ltt_tracefile_open(LttTrace
*t
, gchar
* fileName
, LttTracefile
*tf
)
301 struct stat lTDFStat
; /* Trace data file status */
302 struct ltt_block_start_header
*header
;
303 int page_size
= getpagesize();
306 tf
->long_name
= g_quark_from_string(fileName
);
308 tf
->fd
= open(fileName
, O_RDONLY
);
310 g_warning("Unable to open input data file %s\n", fileName
);
314 // Get the file's status
315 if(fstat(tf
->fd
, &lTDFStat
) < 0){
316 g_warning("Unable to get the status of the input data file %s\n", fileName
);
320 // Is the file large enough to contain a trace
321 if(lTDFStat
.st_size
<
322 (off_t
)(sizeof(struct ltt_block_start_header
)
323 + sizeof(struct ltt_trace_header_any
))){
324 g_print("The input data file %s does not contain a trace\n", fileName
);
328 /* Temporarily map the buffer start header to get trace information */
329 /* Multiple of pages aligned head */
330 tf
->buffer
.head
= mmap(0,
331 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
332 + sizeof(struct ltt_trace_header_any
)), PROT_READ
,
333 MAP_PRIVATE
, tf
->fd
, 0);
334 if(tf
->buffer
.head
== MAP_FAILED
) {
335 perror("Error in allocating memory for buffer of tracefile");
338 g_assert( ( (guint
)tf
->buffer
.head
&(8-1) ) == 0); // make sure it's aligned.
340 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
342 if(parse_trace_header(header
->trace
, tf
, NULL
)) {
343 g_warning("parse_trace_header error");
347 //store the size of the file
348 tf
->file_size
= lTDFStat
.st_size
;
349 tf
->buf_size
= ltt_get_uint32(LTT_GET_BO(tf
), &header
->buf_size
);
350 tf
->num_blocks
= tf
->file_size
/ tf
->buf_size
;
352 if(munmap(tf
->buffer
.head
,
353 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
354 + sizeof(struct ltt_trace_header_any
)))) {
355 g_warning("unmap size : %u\n",
356 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
357 + sizeof(struct ltt_trace_header_any
)));
358 perror("munmap error");
361 tf
->buffer
.head
= NULL
;
363 //read the first block
364 if(map_block(tf
,0)) {
365 perror("Cannot map block for tracefile");
373 if(munmap(tf
->buffer
.head
,
374 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
375 + sizeof(struct ltt_trace_header_any
)))) {
376 g_warning("unmap size : %u\n",
377 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
378 + sizeof(struct ltt_trace_header_any
)));
379 perror("munmap error");
388 LttTrace
*ltt_tracefile_get_trace(LttTracefile
*tf
)
394 /*****************************************************************************
395 *Open control and per cpu tracefiles
396 ****************************************************************************/
398 void ltt_tracefile_open_cpu(LttTrace
*t
, gchar
* tracefile_name
)
401 tf
= ltt_tracefile_open(t
,tracefile_name
);
403 t
->per_cpu_tracefile_number
++;
404 g_ptr_array_add(t
->per_cpu_tracefiles
, tf
);
407 gint
ltt_tracefile_open_control(LttTrace
*t
, gchar
* control_name
)
416 tf
= ltt_tracefile_open(t
,control_name
);
418 g_warning("ltt_tracefile_open_control : bad file descriptor");
421 t
->control_tracefile_number
++;
422 g_ptr_array_add(t
->control_tracefiles
,tf
);
424 //parse facilities tracefile to get base_id
425 if(strcmp(&control_name
[strlen(control_name
)-10],"facilities") ==0){
427 if(!ltt_tracefile_read(tf
,&ev
)) return 0; // end of file
429 if(ev
.event_id
== TRACE_FACILITY_LOAD
){
431 fLoad
.name
= (gchar
*)pos
;
432 fLoad
.checksum
= *(LttChecksum
*)(pos
+ strlen(fLoad
.name
));
433 fLoad
.base_code
= *(guint32
*)(pos
+ strlen(fLoad
.name
) + sizeof(LttChecksum
));
435 for(i
=0;i
<t
->facility_number
;i
++){
436 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
437 if(strcmp(f
->name
,fLoad
.name
)==0 && fLoad
.checksum
==f
->checksum
){
438 f
->base_id
= fLoad
.base_code
;
442 if(i
==t
->facility_number
) {
443 g_warning("Facility: %s, checksum: %u is not found",
444 fLoad
.name
,(unsigned int)fLoad
.checksum
);
447 }else if(ev
.event_id
== TRACE_BLOCK_START
){
449 }else if(ev
.event_id
== TRACE_BLOCK_END
){
452 g_warning("Not valid facilities trace file");
461 /*****************************************************************************
463 * ltt_tracefile_close: close a trace file,
465 * t : tracefile which will be closed
466 ****************************************************************************/
468 void ltt_tracefile_close(LttTracefile
*t
)
470 int page_size
= getpagesize();
472 if(t
->buffer
.head
!= NULL
)
473 if(munmap(t
->buffer
.head
, PAGE_ALIGN(t
->buf_size
))) {
474 g_warning("unmap size : %u\n",
475 PAGE_ALIGN(t
->buf_size
));
476 perror("munmap error");
484 /*****************************************************************************
485 *Get system information
486 ****************************************************************************/
488 gint
getSystemInfo(LttSystemDescription
* des
, gchar
* pathname
)
495 GMarkupParseContext
* context
;
496 GError
* error
= NULL
;
497 GMarkupParser markup_parser
=
499 parser_start_element
,
502 NULL
, /* passthrough */
506 fd
= g_open(pathname
, O_RDONLY
, 0);
508 g_warning("Can not open file : %s\n", pathname
);
512 iochan
= g_io_channel_unix_new(fd
);
514 context
= g_markup_parse_context_new(&markup_parser
, 0, des
,NULL
);
516 //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){
517 while(g_io_channel_read_line(iochan
, &buf
, &length
, NULL
, &error
)
518 != G_IO_STATUS_EOF
) {
521 g_warning("Can not read xml file: \n%s\n", error
->message
);
524 if(!g_markup_parse_context_parse(context
, buf
, length
, &error
)){
526 g_warning("Can not parse xml file: \n%s\n", error
->message
);
529 g_markup_parse_context_free(context
);
531 g_io_channel_shutdown(iochan
, FALSE
, &error
); /* No flush */
533 g_warning("Can not close file: \n%s\n", error
->message
);
541 g_markup_parse_context_free(context
);
543 g_io_channel_shutdown(iochan
, FALSE
, &error
); /* No flush */
545 g_warning("Can not close file: \n%s\n", error
->message
);
556 /*****************************************************************************
557 *The following functions get facility/tracefile information
558 ****************************************************************************/
560 gint
getFacilityInfo(LttTrace
*t
, gchar
* eventdefs
)
567 gchar fullname
[DIR_NAME_SIZE
];
568 GError
* error
= NULL
;
570 dir
= g_dir_open(eventdefs
, 0, &error
);
573 g_warning("Can not open directory: %s, %s\n", eventdefs
, error
->message
);
578 while((name
= g_dir_read_name(dir
)) != NULL
){
579 if(!g_pattern_match_simple("*.xml", name
)) continue;
580 strcpy(fullname
,eventdefs
);
581 strcat(fullname
,name
);
582 ltt_facility_open(t
,fullname
);
586 for(j
=0;j
<t
->facility_number
;j
++){
587 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, j
);
588 for(i
=0; i
<f
->event_number
; i
++){
590 setFieldsOffset(NULL
, et
, NULL
, t
);
597 /*****************************************************************************
598 *A trace is specified as a pathname to the directory containing all the
599 *associated data (control tracefiles, per cpu tracefiles, event
602 *When a trace is closed, all the associated facilities, types and fields
603 *are released as well.
607 /****************************************************************************
608 * get_absolute_pathname
610 * return the unique pathname in the system
612 * MD : Fixed this function so it uses realpath, dealing well with
613 * forgotten cases (.. were not used correctly before).
615 ****************************************************************************/
616 void get_absolute_pathname(const gchar
*pathname
, gchar
* abs_pathname
)
618 abs_pathname
[0] = '\0';
620 if ( realpath (pathname
, abs_pathname
) != NULL
)
624 /* error, return the original path unmodified */
625 strcpy(abs_pathname
, pathname
);
631 /* Search for something like : .*_.*
633 * The left side is the name, the right side is the number.
636 int get_tracefile_name_number(const gchar
*raw_name
,
640 guint raw_name_len
= strlen(raw_name
);
641 gchar char_name
[PATH_MAX
];
647 for(i
=raw_name_len
-1;i
>=0;i
--) {
648 if(raw_name
[i
] == '_') break;
650 if(i
==0) /* Either not found or name length is 0 */
654 cpu_num
= strtol(raw_name
+underscore_pos
+1, &endptr
, 10);
656 if(endptr
== raw_name
+underscore_pos
+1)
657 return -1; /* No digit */
658 if(cpu_num
== LONG_MIN
|| cpu_num
== LONG_MAX
)
659 return -1; /* underflow / overflow */
661 strncpy(char_name
, raw_name
, underscore_pos
);
663 char_name
[underscore_pos
] = '\0';
665 *name
= g_quark_from_string(char_name
);
672 GData
**ltt_trace_get_tracefiles_groups(LttTrace
*trace
)
674 return &trace
->tracefiles
;
678 void compute_tracefile_group(GQuark key_id
,
680 struct compute_tracefile_group_args
*args
)
685 for(i
=0; i
<group
->len
; i
++) {
686 tf
= &g_array_index (group
, LttTracefile
, i
);
688 args
->func(tf
, args
->func_args
);
693 void ltt_tracefile_group_destroy(gpointer data
)
695 GArray
*group
= (GArray
*)data
;
699 for(i
=0; i
<group
->len
; i
++) {
700 tf
= &g_array_index (group
, LttTracefile
, i
);
702 ltt_tracefile_close(tf
);
704 g_array_free(group
, TRUE
);
707 gboolean
ltt_tracefile_group_has_cpu_online(gpointer data
)
709 GArray
*group
= (GArray
*)data
;
713 for(i
=0; i
<group
->len
; i
++) {
714 tf
= &g_array_index (group
, LttTracefile
, i
);
715 if(tf
->cpu_online
) return 1;
721 /* Open each tracefile under a specific directory. Put them in a
722 * GData : permits to access them using their tracefile group pathname.
723 * i.e. access control/modules tracefile group by index :
726 * relative path is the path relative to the trace root
727 * root path is the full path
729 * A tracefile group is simply an array where all the per cpu tracefiles sits.
732 static int open_tracefiles(LttTrace
*trace
, gchar
*root_path
,
733 gchar
*relative_path
)
735 DIR *dir
= opendir(root_path
);
736 struct dirent
*entry
;
737 struct stat stat_buf
;
740 gchar path
[PATH_MAX
];
745 gchar rel_path
[PATH_MAX
];
754 strncpy(path
, root_path
, PATH_MAX
-1);
755 path_len
= strlen(path
);
756 path
[path_len
] = '/';
758 path_ptr
= path
+ path_len
;
760 strncpy(rel_path
, relative_path
, PATH_MAX
-1);
761 rel_path_len
= strlen(rel_path
);
762 rel_path
[rel_path_len
] = '/';
764 rel_path_ptr
= rel_path
+ rel_path_len
;
766 while((entry
= readdir(dir
)) != NULL
) {
768 if(entry
->d_name
[0] == '.') continue;
770 strncpy(path_ptr
, entry
->d_name
, PATH_MAX
- path_len
);
771 strncpy(rel_path_ptr
, entry
->d_name
, PATH_MAX
- rel_path_len
);
773 ret
= stat(path
, &stat_buf
);
779 g_debug("Tracefile file or directory : %s\n", path
);
781 if(strcmp(rel_path
, "/eventdefs") == 0) continue;
783 if(S_ISDIR(stat_buf
.st_mode
)) {
785 g_debug("Entering subdirectory...\n");
786 ret
= open_tracefiles(trace
, path
, rel_path
);
787 if(ret
< 0) continue;
788 } else if(S_ISREG(stat_buf
.st_mode
)) {
793 if(get_tracefile_name_number(rel_path
, &name
, &num
))
794 continue; /* invalid name */
796 g_debug("Opening file.\n");
797 if(ltt_tracefile_open(trace
, path
, &tmp_tf
)) {
798 g_info("Error opening tracefile %s", path
);
800 continue; /* error opening the tracefile : bad magic number ? */
803 g_debug("Tracefile name is %s and number is %u",
804 g_quark_to_string(name
), num
);
806 tmp_tf
.cpu_online
= 1;
807 tmp_tf
.cpu_num
= num
;
810 group
= g_datalist_id_get_data(&trace
->tracefiles
, name
);
812 /* Elements are automatically cleared when the array is allocated.
813 * It makes the cpu_online variable set to 0 : cpu offline, by default.
815 group
= g_array_sized_new (FALSE
, TRUE
, sizeof(LttTracefile
), 10);
816 g_datalist_id_set_data_full(&trace
->tracefiles
, name
,
817 group
, ltt_tracefile_group_destroy
);
820 /* Add the per cpu tracefile to the named group */
821 unsigned int old_len
= group
->len
;
823 group
= g_array_set_size(group
, num
+1);
824 g_array_index (group
, LttTracefile
, num
) = tmp_tf
;
834 /* ltt_get_facility_description
836 * Opens the file corresponding to the requested facility (identified by fac_id
839 * The name searched is : %trace root%/eventdefs/facname_checksum.xml
841 * Returns 0 on success, or 1 on failure.
844 static int ltt_get_facility_description(LttFacility
*f
,
846 LttTracefile
*fac_tf
)
848 char desc_file_name
[PATH_MAX
];
853 text
= g_quark_to_string(t
->pathname
);
854 textlen
= strlen(text
);
856 if(textlen
>= PATH_MAX
) goto name_error
;
857 strcpy(desc_file_name
, text
);
859 text
= "/eventdefs/";
860 textlen
+=strlen(text
);
861 if(textlen
>= PATH_MAX
) goto name_error
;
862 strcat(desc_file_name
, text
);
864 text
= g_quark_to_string(f
->name
);
865 textlen
+=strlen(text
);
866 if(textlen
>= PATH_MAX
) goto name_error
;
867 strcat(desc_file_name
, text
);
870 textlen
+=strlen(text
);
871 if(textlen
>= PATH_MAX
) goto name_error
;
872 strcat(desc_file_name
, text
);
874 err
= snprintf(desc_file_name
+textlen
, PATH_MAX
-textlen
-1,
876 if(err
< 0) goto name_error
;
878 textlen
=strlen(desc_file_name
);
882 textlen
+=strlen(text
);
883 if(textlen
>= PATH_MAX
) goto name_error
;
884 strcat(desc_file_name
, text
);
886 err
= ltt_facility_open(f
, t
, desc_file_name
);
887 if(err
) goto facility_error
;
896 static void ltt_fac_ids_destroy(gpointer data
)
898 GArray
*fac_ids
= (GArray
*)data
;
900 g_array_free(fac_ids
, TRUE
);
904 /* Presumes the tracefile is already seeked at the beginning. It makes sense,
905 * because it must be done just after the opening */
906 static int ltt_process_facility_tracefile(LttTracefile
*tf
)
915 err
= ltt_tracefile_read_seek(tf
);
916 if(err
== EPERM
) goto seek_error
;
917 else if(err
== ERANGE
) break; /* End of tracefile */
919 err
= ltt_tracefile_read_update_event(tf
);
920 if(err
) goto update_error
;
922 /* We are on a facility load/or facility unload/ or heartbeat event */
924 * * facility 0 is hardcoded : this is the core facility. It will be shown
925 * in the facility array though, and is shown as "loaded builtin" in the
927 * It contains event :
929 * 1 : facility unload
930 * 2 : state dump facility load
933 if(tf
->event
.facility_id
!= LTT_FACILITY_CORE
) {
934 /* Should only contain core facility */
935 g_warning("Error in processing facility file %s, "
936 "should not contain facility id %u.", g_quark_to_string(tf
->name
),
937 tf
->event
.facility_id
);
942 struct LttFacilityLoad
*fac_load_data
;
943 struct LttStateDumpFacilityLoad
*fac_state_dump_load_data
;
947 switch((enum ltt_core_events
)tf
->event
.event_id
) {
948 case LTT_EVENT_FACILITY_LOAD
:
949 fac_name
= (char*)(tf
->event
.data
);
950 g_debug("Doing LTT_EVENT_FACILITY_LOAD of facility %s",
953 (struct LttFacilityLoad
*)
954 (tf
->event
.data
+ strlen(fac_name
) + 1);
955 fac
= &g_array_index (tf
->trace
->facilities_by_num
, LttFacility
,
956 ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
));
957 g_assert(fac
->exists
== 0);
958 fac
->name
= g_quark_from_string(fac_name
);
959 fac
->checksum
= ltt_get_uint32(LTT_GET_BO(tf
),
960 &fac_load_data
->checksum
);
961 fac
->id
= ltt_get_uint32(LTT_GET_BO(tf
), &fac_load_data
->id
);
962 fac
->pointer_size
= ltt_get_uint32(LTT_GET_BO(tf
),
963 &fac_load_data
->pointer_size
);
964 fac
->long_size
= ltt_get_uint32(LTT_GET_BO(tf
),
965 &fac_load_data
->long_size
);
966 fac
->size_t_size
= ltt_get_uint32(LTT_GET_BO(tf
),
967 &fac_load_data
->size_t_size
);
968 fac
->alignment
= ltt_get_uint32(LTT_GET_BO(tf
),
969 &fac_load_data
->alignment
);
971 if(ltt_get_facility_description(fac
, tf
->trace
, tf
))
972 continue; /* error opening description */
974 fac
->trace
= tf
->trace
;
976 /* Preset the field offsets */
977 for(i
=0; i
<fac
->events
->len
; i
++){
978 et
= &g_array_index(fac
->events
, LttEventType
, i
);
979 set_fields_offsets(tf
, et
);
984 fac_ids
= g_datalist_id_get_data(&tf
->trace
->facilities_by_name
,
986 if(fac_ids
== NULL
) {
987 fac_ids
= g_array_sized_new (FALSE
, TRUE
, sizeof(guint
), 1);
988 g_datalist_id_set_data_full(&tf
->trace
->facilities_by_name
,
990 fac_ids
, ltt_fac_ids_destroy
);
992 g_array_append_val(fac_ids
, fac
->id
);
995 case LTT_EVENT_FACILITY_UNLOAD
:
996 g_debug("Doing LTT_EVENT_FACILITY_UNLOAD");
997 /* We don't care about unload : facilities ID are valid for the whole
998 * trace. They simply won't be used after the unload. */
1000 case LTT_EVENT_STATE_DUMP_FACILITY_LOAD
:
1001 fac_name
= (char*)(tf
->event
.data
);
1002 g_debug("Doing LTT_EVENT_STATE_DUMP_FACILITY_LOAD of facility %s",
1004 fac_state_dump_load_data
=
1005 (struct LttStateDumpFacilityLoad
*)
1006 (tf
->event
.data
+ strlen(fac_name
) + 1);
1007 fac
= &g_array_index (tf
->trace
->facilities_by_num
, LttFacility
,
1008 ltt_get_uint32(LTT_GET_BO(tf
), &fac_state_dump_load_data
->id
));
1009 g_assert(fac
->exists
== 0);
1010 fac
->name
= g_quark_from_string(fac_name
);
1011 fac
->checksum
= ltt_get_uint32(LTT_GET_BO(tf
),
1012 &fac_state_dump_load_data
->checksum
);
1013 fac
->id
= fac_state_dump_load_data
->id
;
1014 fac
->pointer_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1015 &fac_state_dump_load_data
->pointer_size
);
1016 fac
->long_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1017 &fac_state_dump_load_data
->long_size
);
1018 fac
->size_t_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1019 &fac_state_dump_load_data
->size_t_size
);
1020 fac
->alignment
= ltt_get_uint32(LTT_GET_BO(tf
),
1021 &fac_state_dump_load_data
->alignment
);
1022 if(ltt_get_facility_description(fac
, tf
->trace
, tf
))
1023 continue; /* error opening description */
1025 fac
->trace
= tf
->trace
;
1027 /* Preset the field offsets */
1028 for(i
=0; i
<fac
->events
->len
; i
++){
1029 et
= &g_array_index(fac
->events
, LttEventType
, i
);
1030 set_fields_offsets(tf
, et
);
1035 fac_ids
= g_datalist_id_get_data(&tf
->trace
->facilities_by_name
,
1037 if(fac_ids
== NULL
) {
1038 fac_ids
= g_array_sized_new (FALSE
, TRUE
, sizeof(guint
), 1);
1039 g_datalist_id_set_data_full(&tf
->trace
->facilities_by_name
,
1041 fac_ids
, ltt_fac_ids_destroy
);
1043 g_array_append_val(fac_ids
, fac
->id
);
1046 case LTT_EVENT_HEARTBEAT
:
1049 g_warning("Error in processing facility file %s, "
1050 "unknown event id %hhu in core facility.",
1051 g_quark_to_string(tf
->name
),
1052 tf
->event
.event_id
);
1054 goto event_id_error
;
1060 /* Error handling */
1065 g_warning("An error occured in facility tracefile parsing");
1070 LttTrace
*ltt_trace_open(const gchar
*pathname
)
1072 gchar abs_path
[PATH_MAX
];
1077 struct ltt_block_start_header
*header
;
1079 struct dirent
*entry
;
1080 guint control_found
= 0;
1081 guint eventdefs_found
= 0;
1082 struct stat stat_buf
;
1083 gchar path
[PATH_MAX
];
1085 t
= g_new(LttTrace
, 1);
1086 if(!t
) goto alloc_error
;
1088 get_absolute_pathname(pathname
, abs_path
);
1089 t
->pathname
= g_quark_from_string(abs_path
);
1091 g_datalist_init(&t
->tracefiles
);
1093 /* Test to see if it looks like a trace */
1094 dir
= opendir(abs_path
);
1099 while((entry
= readdir(dir
)) != NULL
) {
1100 strcpy(path
, abs_path
);
1102 strcat(path
, entry
->d_name
);
1103 ret
= stat(path
, &stat_buf
);
1108 if(S_ISDIR(stat_buf
.st_mode
)) {
1109 if(strcmp(entry
->d_name
, "control") == 0) {
1112 if(strcmp(entry
->d_name
, "eventdefs") == 0) {
1113 eventdefs_found
= 1;
1119 if(!control_found
|| !eventdefs_found
) goto find_error
;
1121 /* Open all the tracefiles */
1122 if(open_tracefiles(t
, abs_path
, "")) {
1123 g_warning("Error opening tracefile %s", abs_path
);
1127 /* Prepare the facilities containers : array and mapping */
1128 /* Array is zeroed : the "exists" field is set to false by default */
1129 t
->facilities_by_num
= g_array_sized_new (FALSE
,
1130 TRUE
, sizeof(LttFacility
),
1132 t
->facilities_by_num
= g_array_set_size(t
->facilities_by_num
, NUM_FACILITIES
);
1134 g_datalist_init(&t
->facilities_by_name
);
1136 /* Parse each trace control/facilitiesN files : get runtime fac. info */
1137 group
= g_datalist_id_get_data(&t
->tracefiles
, LTT_TRACEFILE_NAME_FACILITIES
);
1139 g_error("Trace %s has no facility tracefile", abs_path
);
1141 goto facilities_error
;
1144 /* Get the trace information for the control/facility 0 tracefile */
1145 g_assert(group
->len
> 0);
1146 tf
= &g_array_index (group
, LttTracefile
, 0);
1147 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
1148 g_assert(parse_trace_header(header
->trace
,
1151 t
->num_cpu
= group
->len
;
1153 for(i
=0; i
<group
->len
; i
++) {
1154 tf
= &g_array_index (group
, LttTracefile
, i
);
1155 if(ltt_process_facility_tracefile(tf
))
1156 goto facilities_error
;
1161 /* Error handling */
1163 g_datalist_clear(&t
->facilities_by_name
);
1164 g_array_free(t
->facilities_by_num
, TRUE
);
1166 g_datalist_clear(&t
->tracefiles
);
1174 GQuark
ltt_trace_name(const LttTrace
*t
)
1180 /******************************************************************************
1181 * When we copy a trace, we want all the opening actions to happen again :
1182 * the trace will be reopened and totally independant from the original.
1183 * That's why we call ltt_trace_open.
1184 *****************************************************************************/
1185 LttTrace
*ltt_trace_copy(LttTrace
*self
)
1187 return ltt_trace_open(g_quark_to_string(self
->pathname
));
1190 void ltt_trace_close(LttTrace
*t
)
1195 for(i
=0; i
<t
->facilities_by_num
->len
; i
++) {
1196 fac
= &g_array_index (t
->facilities_by_num
, LttFacility
, i
);
1198 ltt_facility_close(fac
);
1201 g_datalist_clear(&t
->facilities_by_name
);
1202 g_array_free(t
->facilities_by_num
, TRUE
);
1203 g_datalist_clear(&t
->tracefiles
);
1208 /*****************************************************************************
1209 *Get the system description of the trace
1210 ****************************************************************************/
1212 LttFacility
*ltt_trace_facility_by_id(LttTrace
*t
, guint8 id
)
1214 g_assert(id
< t
->facilities_by_num
->len
);
1215 return &g_array_index(t
->facilities_by_num
, LttFacility
, id
);
1218 /* ltt_trace_facility_get_by_name
1220 * Returns the GArray of facility indexes. All the fac_ids that matches the
1221 * requested facility name.
1223 * If name is not found, returns NULL.
1225 GArray
*ltt_trace_facility_get_by_name(LttTrace
*t
, GQuark name
)
1227 return g_datalist_id_get_data(&t
->facilities_by_name
, name
);
1230 /*****************************************************************************
1231 * Functions to discover all the event types in the trace
1232 ****************************************************************************/
1235 unsigned ltt_trace_eventtype_number(LttTrace
*t
)
1239 unsigned int num
= t
->facility_number
;
1243 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
1244 count
+= f
->event_number
;
1251 //use an iteration on all the trace facilities, and inside iteration on all the
1252 //event types in each facilities instead.
1253 LttEventType
*ltt_trace_eventtype_get(LttTrace
*t
, unsigned evId
)
1255 LttEventType
*event_type
;
1258 f
= ltt_trace_facility_by_id(t
,evId
);
1260 if(unlikely(!f
)) event_type
= NULL
;
1261 else event_type
= f
->events
[evId
- f
->base_id
];
1268 /*****************************************************************************
1269 * ltt_trace_find_tracefile
1271 * Find a tracefile by name and index in the group.
1273 * Returns a pointer to the tracefiles, else NULL.
1274 ****************************************************************************/
1276 LttTracefile
*ltt_trace_find_tracefile(LttTrace
*t
, const gchar
*name
)
1281 /*****************************************************************************
1282 * Get the start time and end time of the trace
1283 ****************************************************************************/
1285 static void ltt_tracefile_time_span_get(LttTracefile
*tf
,
1286 LttTime
*start
, LttTime
*end
)
1290 err
= map_block(tf
, 0);
1292 g_error("Can not map block");
1293 *start
= ltt_time_infinite
;
1295 *start
= tf
->buffer
.begin
.timestamp
;
1297 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1299 g_error("Can not map block");
1300 *end
= ltt_time_zero
;
1302 *end
= tf
->buffer
.end
.timestamp
;
1305 struct tracefile_time_span_get_args
{
1311 static void group_time_span_get(GQuark name
, gpointer data
, gpointer user_data
)
1313 struct tracefile_time_span_get_args
*args
=
1314 (struct tracefile_time_span_get_args
*)user_data
;
1316 GArray
*group
= (GArray
*)data
;
1322 for(i
=0; i
<group
->len
; i
++) {
1323 tf
= &g_array_index (group
, LttTracefile
, i
);
1324 if(tf
->cpu_online
) {
1325 ltt_tracefile_time_span_get(tf
, &tmp_start
, &tmp_end
);
1326 if(ltt_time_compare(*args
->start
, tmp_start
)>0) *args
->start
= tmp_start
;
1327 if(ltt_time_compare(*args
->end
, tmp_end
)<0) *args
->end
= tmp_end
;
1332 void ltt_trace_time_span_get(LttTrace
*t
, LttTime
*start
, LttTime
*end
)
1334 LttTime min_start
= ltt_time_infinite
;
1335 LttTime max_end
= ltt_time_zero
;
1336 struct tracefile_time_span_get_args args
= { t
, &min_start
, &max_end
};
1338 g_datalist_foreach(&t
->tracefiles
, &group_time_span_get
, &args
);
1340 if(start
!= NULL
) *start
= min_start
;
1341 if(end
!= NULL
) *end
= max_end
;
1346 /*****************************************************************************
1347 *Get the name of a tracefile
1348 ****************************************************************************/
1350 GQuark
ltt_tracefile_name(const LttTracefile
*tf
)
1355 GQuark
ltt_tracefile_long_name(const LttTracefile
*tf
)
1357 return tf
->long_name
;
1362 guint
ltt_tracefile_num(LttTracefile
*tf
)
1367 /*****************************************************************************
1368 * Get the number of blocks in the tracefile
1369 ****************************************************************************/
1371 guint
ltt_tracefile_block_number(LttTracefile
*tf
)
1373 return tf
->num_blocks
;
1377 /* Seek to the first event in a tracefile that has a time equal or greater than
1378 * the time passed in parameter.
1380 * If the time parameter is outside the tracefile time span, seek to the first
1381 * event or if after, return ERANGE.
1383 * If the time parameter is before the first event, we have to seek specially to
1386 * If the time is after the end of the trace, return ERANGE.
1388 * Do a binary search to find the right block, then a sequential search in the
1389 * block to find the event.
1391 * In the special case where the time requested fits inside a block that has no
1392 * event corresponding to the requested time, the first event of the next block
1395 * IMPORTANT NOTE : // FIXME everywhere...
1397 * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time :
1398 * you will jump over an event if you do.
1400 * Return value : 0 : no error, the tf->event can be used
1401 * ERANGE : time if after the last event of the trace
1402 * otherwise : this is an error.
1406 int ltt_tracefile_seek_time(LttTracefile
*tf
, LttTime time
)
1410 unsigned int block_num
, high
, low
;
1412 /* seek at the beginning of trace */
1413 err
= map_block(tf
, 0); /* First block */
1415 g_error("Can not map block");
1419 /* If the time is lower or equal the beginning of the trace,
1420 * go to the first event. */
1421 if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) <= 0) {
1422 ret
= ltt_tracefile_read(tf
);
1423 if(ret
== ERANGE
) goto range
;
1424 else if (ret
) goto fail
;
1425 goto found
; /* There is either no event in the trace or the event points
1426 to the first event in the trace */
1429 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1431 g_error("Can not map block");
1435 /* If the time is after the end of the trace, return ERANGE. */
1436 if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) > 0) {
1440 /* Binary search the block */
1441 high
= tf
->num_blocks
- 1;
1445 block_num
= ((high
-low
) / 2) + low
;
1447 err
= map_block(tf
, block_num
);
1449 g_error("Can not map block");
1453 /* We cannot divide anymore : this is what would happen if the time
1454 * requested was exactly between two consecutive buffers'end and start
1455 * timestamps. This is also what would happend if we didn't deal with out
1456 * of span cases prior in this function. */
1457 /* The event is right in the buffer!
1458 * (or in the next buffer first event) */
1460 ret
= ltt_tracefile_read(tf
);
1461 if(ret
== ERANGE
) goto range
; /* ERANGE or EPERM */
1462 else if(ret
) goto fail
;
1464 if(ltt_time_compare(time
, tf
->event
.event_time
) <= 0)
1468 } else if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) < 0) {
1469 /* go to lower part */
1470 high
= block_num
- 1;
1471 } else if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) > 0) {
1472 /* go to higher part */
1473 low
= block_num
+ 1;
1474 } else {/* The event is right in the buffer!
1475 (or in the next buffer first event) */
1477 ret
= ltt_tracefile_read(tf
);
1478 if(ret
== ERANGE
) goto range
; /* ERANGE or EPERM */
1479 else if(ret
) goto fail
;
1481 if(ltt_time_compare(time
, tf
->event
.event_time
) <= 0)
1493 /* Error handling */
1495 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1496 g_quark_to_string(tf
->name
));
1501 int ltt_tracefile_seek_position(LttTracefile
*tf
, const LttEventPosition
*ep
) {
1505 if(ep
->tracefile
!= tf
) {
1509 err
= map_block(tf
, ep
->block
);
1511 g_error("Can not map block");
1515 tf
->event
.offset
= ep
->offset
;
1517 err
= ltt_tracefile_read_update_event(tf
);
1519 err
= ltt_tracefile_read_op(tf
);
1525 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1526 g_quark_to_string(tf
->name
));
1530 /* Calculate the real event time based on the buffer boundaries */
1531 LttTime
ltt_interpolate_time(LttTracefile
*tf
, LttEvent
*event
)
1535 g_assert(tf
->trace
->has_tsc
);
1537 // time = ltt_time_from_uint64(
1538 // cycles_2_ns(tf, (guint64)(tf->buffer.tsc - tf->buffer.begin.cycle_count)));
1539 time
= ltt_time_from_uint64(
1540 (double)(tf
->buffer
.tsc
- tf
->trace
->start_tsc
) * 1000000.0
1541 / (double)tf
->trace
->start_freq
);
1542 //time = ltt_time_add(tf->buffer.begin.timestamp, time);
1543 time
= ltt_time_add(tf
->trace
->start_time_from_tsc
, time
);
1549 /* Get the current event of the tracefile : valid until the next read */
1550 LttEvent
*ltt_tracefile_get_event(LttTracefile
*tf
)
1557 /*****************************************************************************
1559 * ltt_tracefile_read : Read the next event in the tracefile
1564 * Returns 0 if an event can be used in tf->event.
1565 * Returns ERANGE on end of trace. The event in tf->event still can be used
1566 * (if the last block was not empty).
1567 * Returns EPERM on error.
1569 * This function does make the tracefile event structure point to the event
1570 * currently pointed to by the tf->event.
1572 * Note : you must call a ltt_tracefile_seek to the beginning of the trace to
1573 * reinitialize it after an error if you want results to be coherent.
1574 * It would be the case if a end of trace last buffer has no event : the end
1575 * of trace wouldn't be returned, but an error.
1576 * We make the assumption there is at least one event per buffer.
1577 ****************************************************************************/
1579 int ltt_tracefile_read(LttTracefile
*tf
)
1583 err
= ltt_tracefile_read_seek(tf
);
1585 err
= ltt_tracefile_read_update_event(tf
);
1587 err
= ltt_tracefile_read_op(tf
);
1593 int ltt_tracefile_read_seek(LttTracefile
*tf
)
1597 /* Get next buffer until we finally have an event, or end of trace */
1599 err
= ltt_seek_next_event(tf
);
1600 if(unlikely(err
== ENOPROTOOPT
)) {
1604 /* Are we at the end of the buffer ? */
1606 if(unlikely(tf
->buffer
.index
== tf
->num_blocks
-1)){ /* end of trace ? */
1609 /* get next block */
1610 err
= map_block(tf
, tf
->buffer
.index
+ 1);
1612 g_error("Can not map block");
1616 } else break; /* We found an event ! */
1623 /* do specific operation on events */
1624 int ltt_tracefile_read_op(LttTracefile
*tf
)
1630 /* do event specific operation */
1632 /* do something if its an heartbeat event : increment the heartbeat count */
1633 //if(event->facility_id == LTT_FACILITY_CORE)
1634 // if(event->event_id == LTT_EVENT_HEARTBEAT)
1635 // tf->cur_heart_beat_number++;
1641 /* same as ltt_tracefile_read, but does not seek to the next event nor call
1642 * event specific operation. */
1643 int ltt_tracefile_read_update_event(LttTracefile
*tf
)
1649 pos
= tf
->buffer
.head
+ event
->offset
;
1651 /* Read event header */
1655 if(tf
->trace
->has_tsc
) {
1656 if(tf
->trace
->has_heartbeat
) {
1657 event
->time
.timestamp
= ltt_get_uint32(LTT_GET_BO(tf
),
1659 /* 32 bits -> 64 bits tsc */
1660 /* note : still works for seek and non seek cases. */
1661 if(event
->time
.timestamp
< (0xFFFFFFFFULL
&tf
->buffer
.tsc
)) {
1662 tf
->buffer
.tsc
= ((tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1664 | (guint64
)event
->time
.timestamp
;
1665 event
->tsc
= tf
->buffer
.tsc
;
1668 tf
->buffer
.tsc
= (tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1669 | (guint64
)event
->time
.timestamp
;
1670 event
->tsc
= tf
->buffer
.tsc
;
1672 pos
+= sizeof(guint32
);
1674 event
->tsc
= ltt_get_uint64(LTT_GET_BO(tf
), pos
);
1675 tf
->buffer
.tsc
= event
->tsc
;
1676 pos
+= sizeof(guint64
);
1679 event
->event_time
= ltt_interpolate_time(tf
, event
);
1681 event
->time
.delta
.tv_sec
= 0;
1682 event
->time
.delta
.tv_nsec
= ltt_get_uint32(LTT_GET_BO(tf
),
1683 pos
) * NSEC_PER_USEC
;
1685 event
->tsc
= tf
->buffer
.tsc
;
1687 event
->event_time
= ltt_time_add(tf
->buffer
.begin
.timestamp
,
1689 pos
+= sizeof(guint32
);
1692 event
->facility_id
= *(guint8
*)pos
;
1693 pos
+= sizeof(guint8
);
1695 event
->event_id
= *(guint8
*)pos
;
1696 pos
+= sizeof(guint8
);
1698 event
->event_size
= ltt_get_uint16(LTT_GET_BO(tf
), pos
);
1699 pos
+= sizeof(guint16
);
1703 /* get the data size and update the event fields with the current
1705 ltt_update_event_size(tf
);
1711 /****************************************************************************
1713 * map_block : map a block from the file
1715 * lttdes : ltt trace file
1716 * whichBlock : the block which will be read
1719 * EINVAL : lseek fail
1720 * EIO : can not read from the file
1721 ****************************************************************************/
1723 static gint
map_block(LttTracefile
* tf
, guint block_num
)
1725 int page_size
= getpagesize();
1726 struct ltt_block_start_header
*header
;
1728 g_assert(block_num
< tf
->num_blocks
);
1730 if(tf
->buffer
.head
!= NULL
) {
1731 if(munmap(tf
->buffer
.head
, PAGE_ALIGN(tf
->buf_size
))) {
1732 g_warning("unmap size : %u\n",
1733 PAGE_ALIGN(tf
->buf_size
));
1734 perror("munmap error");
1740 /* Multiple of pages aligned head */
1741 tf
->buffer
.head
= mmap(0,
1742 PAGE_ALIGN(tf
->buf_size
),
1743 PROT_READ
, MAP_PRIVATE
, tf
->fd
,
1744 PAGE_ALIGN((off_t
)tf
->buf_size
* (off_t
)block_num
));
1746 if(tf
->buffer
.head
== MAP_FAILED
) {
1747 perror("Error in allocating memory for buffer of tracefile");
1751 g_assert( ( (guint
)tf
->buffer
.head
&(8-1) ) == 0); // make sure it's aligned.
1754 tf
->buffer
.index
= block_num
;
1756 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
1759 tf
->buffer
.begin
.timestamp
= ltt_time_add(
1760 ltt_time_from_uint64(
1761 ltt_get_uint64(LTT_GET_BO(tf
),
1762 &header
->begin
.timestamp
)
1763 - tf
->trace
->start_monotonic
),
1764 tf
->trace
->start_time
);
1766 //g_debug("block %u begin : %lu.%lu", block_num,
1767 // tf->buffer.begin.timestamp.tv_sec, tf->buffer.begin.timestamp.tv_nsec);
1768 tf
->buffer
.begin
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1769 &header
->begin
.cycle_count
);
1770 tf
->buffer
.begin
.freq
= ltt_get_uint64(LTT_GET_BO(tf
),
1771 &header
->begin
.freq
);
1772 tf
->buffer
.begin
.timestamp
= ltt_time_add(
1773 ltt_time_from_uint64(
1774 (double)(tf
->buffer
.begin
.cycle_count
1775 - tf
->trace
->start_tsc
) * 1000000.0
1776 / (double)tf
->trace
->start_freq
),
1777 tf
->trace
->start_time_from_tsc
);
1780 tf
->buffer
.end
.timestamp
= ltt_time_add(
1781 ltt_time_from_uint64(
1782 ltt_get_uint64(LTT_GET_BO(tf
),
1783 &header
->end
.timestamp
)
1784 - tf
->trace
->start_monotonic
),
1785 tf
->trace
->start_time
);
1787 //g_debug("block %u end : %lu.%lu", block_num,
1788 // tf->buffer.end.timestamp.tv_sec, tf->buffer.end.timestamp.tv_nsec);
1789 tf
->buffer
.end
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1790 &header
->end
.cycle_count
);
1791 tf
->buffer
.end
.freq
= ltt_get_uint64(LTT_GET_BO(tf
),
1793 tf
->buffer
.lost_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1794 &header
->lost_size
);
1795 tf
->buffer
.end
.timestamp
= ltt_time_add(
1796 ltt_time_from_uint64(
1797 (double)(tf
->buffer
.end
.cycle_count
1798 - tf
->trace
->start_tsc
) * 1000000.0
1799 / (double)tf
->trace
->start_freq
),
1800 tf
->trace
->start_time_from_tsc
);
1802 tf
->buffer
.tsc
= tf
->buffer
.begin
.cycle_count
;
1803 tf
->event
.tsc
= tf
->buffer
.tsc
;
1804 tf
->buffer
.freq
= tf
->buffer
.begin
.freq
;
1807 * eventually support variable buffer size : will need a partial pre-read of
1808 * the headers to create an index when we open the trace... eventually. */
1809 g_assert(tf
->buf_size
== ltt_get_uint32(LTT_GET_BO(tf
),
1810 &header
->buf_size
));
1812 /* Now that the buffer is mapped, calculate the time interpolation for the
1815 // tf->buffer.nsecs_per_cycle = calc_nsecs_per_cycle(tf);
1816 //tf->buffer.cyc2ns_scale = calc_nsecs_per_cycle(tf);
1818 /* Make the current event point to the beginning of the buffer :
1819 * it means that the event read must get the first event. */
1820 tf
->event
.tracefile
= tf
;
1821 tf
->event
.block
= block_num
;
1822 tf
->event
.offset
= 0;
1831 /* It will update the fields offsets too */
1832 void ltt_update_event_size(LttTracefile
*tf
)
1836 /* Specific handling of core events : necessary to read the facility control
1838 LttFacility
*f
= ltt_trace_get_facility_by_num(tf
->trace
,
1839 tf
->event
.facility_id
);
1841 if(likely(tf
->event
.facility_id
== LTT_FACILITY_CORE
)) {
1842 switch((enum ltt_core_events
)tf
->event
.event_id
) {
1843 case LTT_EVENT_FACILITY_LOAD
:
1844 size
= strlen((char*)tf
->event
.data
) + 1;
1845 //g_debug("Update Event facility load of facility %s", (char*)tf->event.data);
1846 size
+= sizeof(struct LttFacilityLoad
);
1848 case LTT_EVENT_FACILITY_UNLOAD
:
1849 //g_debug("Update Event facility unload");
1850 size
= sizeof(struct LttFacilityUnload
);
1852 case LTT_EVENT_STATE_DUMP_FACILITY_LOAD
:
1853 size
= strlen((char*)tf
->event
.data
) + 1;
1854 //g_debug("Update Event facility load state dump of facility %s",
1855 // (char*)tf->event.data);
1856 size
+= sizeof(struct LttStateDumpFacilityLoad
);
1858 case LTT_EVENT_HEARTBEAT
:
1859 //g_debug("Update Event heartbeat");
1860 size
= sizeof(TimeHeartbeat
);
1863 g_warning("Error in getting event size : tracefile %s, "
1864 "unknown event id %hhu in core facility.",
1865 g_quark_to_string(tf
->name
),
1866 tf
->event
.event_id
);
1867 goto event_id_error
;
1872 g_error("Unknown facility %hhu (0x%hhx) in tracefile %s",
1873 tf
->event
.facility_id
,
1874 tf
->event
.facility_id
,
1875 g_quark_to_string(tf
->name
));
1876 goto facility_error
;
1879 LttEventType
*event_type
=
1880 ltt_facility_eventtype_get(f
, tf
->event
.event_id
);
1883 g_error("Unknown event id %hhu in facility %s in tracefile %s",
1885 g_quark_to_string(f
->name
),
1886 g_quark_to_string(tf
->name
));
1887 goto event_type_error
;
1890 if(event_type
->root_field
)
1891 size
= get_field_type_size(tf
, event_type
,
1892 0, 0, event_type
->root_field
, tf
->event
.data
);
1896 //g_debug("Event root field : f.e %hhu.%hhu size %zd",
1897 // tf->event.facility_id,
1898 // tf->event.event_id, size);
1901 tf
->event
.data_size
= size
;
1903 /* Check consistency between kernel and LTTV structure sizes */
1904 g_assert(tf
->event
.data_size
== tf
->event
.event_size
);
1911 tf
->event
.data_size
= 0;
1915 /* Take the tf current event offset and use the event facility id and event id
1916 * to figure out where is the next event offset.
1918 * This is an internal function not aiming at being used elsewhere : it will
1919 * not jump over the current block limits. Please consider using
1920 * ltt_tracefile_read to do this.
1922 * Returns 0 on success
1923 * ERANGE if we are at the end of the buffer.
1924 * ENOPROTOOPT if an error occured when getting the current event size.
1926 static int ltt_seek_next_event(LttTracefile
*tf
)
1931 /* seek over the buffer header if we are at the buffer start */
1932 if(tf
->event
.offset
== 0) {
1933 tf
->event
.offset
+= tf
->buffer_header_size
;
1935 if(tf
->event
.offset
== tf
->buf_size
- tf
->buffer
.lost_size
) {
1942 pos
= tf
->event
.data
;
1944 if(tf
->event
.data_size
< 0) goto error
;
1946 pos
+= (size_t)tf
->event
.data_size
;
1948 tf
->event
.offset
= pos
- tf
->buffer
.head
;
1950 if(tf
->event
.offset
== tf
->buf_size
- tf
->buffer
.lost_size
) {
1954 g_assert(tf
->event
.offset
< tf
->buf_size
- tf
->buffer
.lost_size
);
1960 g_error("Error in ltt_seek_next_event for tracefile %s",
1961 g_quark_to_string(tf
->name
));
1966 /*****************************************************************************
1968 * calc_nsecs_per_cycle : calculate nsecs per cycle for current block
1970 * 1.0 / (freq(khz) *1000) * 1000000000
1973 ****************************************************************************/
1974 /* from timer_tsc.c */
1975 #define CYC2NS_SCALE_FACTOR 10
1976 static guint32
calc_nsecs_per_cycle(LttTracefile
* tf
)
1978 //return 1e6 / (double)tf->buffer.freq;
1979 guint32 cpu_mhz
= tf
->buffer
.freq
/ 1000;
1980 guint32 cyc2ns_scale
= (1000 << CYC2NS_SCALE_FACTOR
)/cpu_mhz
;
1982 return cyc2ns_scale
;
1983 // return 1e6 / (double)tf->buffer.freq;
1986 static guint64
cycles_2_ns(LttTracefile
*tf
, guint64 cycles
)
1988 return (cycles
* tf
->buffer
.cyc2ns_scale
) >> CYC2NS_SCALE_FACTOR
;
1993 void setFieldsOffset(LttTracefile
*tf
, LttEventType
*evT
,void *evD
)
1995 LttField
* rootFld
= evT
->root_field
;
1996 // rootFld->base_address = evD;
1999 rootFld
->field_size
= getFieldtypeSize(tf
, evT
->facility
,
2000 evT
, 0,0,rootFld
, evD
);
2004 /*****************************************************************************
2006 * set_fields_offsets : set the precomputable offset of the fields
2008 * tracefile : opened trace file
2009 * event_type : the event type
2010 ****************************************************************************/
2012 void set_fields_offsets(LttTracefile
*tf
, LttEventType
*event_type
)
2014 LttField
*field
= event_type
->root_field
;
2015 enum field_status fixed_root
= FIELD_FIXED
, fixed_parent
= FIELD_FIXED
;
2018 preset_field_type_size(tf
, event_type
, 0, 0,
2019 &fixed_root
, &fixed_parent
,
2025 /*****************************************************************************
2027 * preset_field_type_size : set the fixed sizes of the field type
2030 * event_type : event type
2031 * offset_root : offset from the root
2032 * offset_parent : offset from the parent
2033 * fixed_root : Do we know a fixed offset to the root ?
2034 * fixed_parent : Do we know a fixed offset to the parent ?
2036 ****************************************************************************/
2037 void preset_field_type_size(LttTracefile
*tf
, LttEventType
*event_type
,
2038 off_t offset_root
, off_t offset_parent
,
2039 enum field_status
*fixed_root
, enum field_status
*fixed_parent
,
2042 enum field_status local_fixed_root
, local_fixed_parent
;
2046 g_assert(field
->fixed_root
== FIELD_UNKNOWN
);
2047 g_assert(field
->fixed_parent
== FIELD_UNKNOWN
);
2048 g_assert(field
->fixed_size
== FIELD_UNKNOWN
);
2050 type
= field
->field_type
;
2052 field
->fixed_root
= *fixed_root
;
2053 if(field
->fixed_root
== FIELD_FIXED
)
2054 field
->offset_root
= offset_root
;
2056 field
->offset_root
= 0;
2058 field
->fixed_parent
= *fixed_parent
;
2059 if(field
->fixed_parent
== FIELD_FIXED
)
2060 field
->offset_parent
= offset_parent
;
2062 field
->offset_parent
= 0;
2064 size_t current_root_offset
;
2065 size_t current_offset
;
2066 enum field_status current_child_status
, final_child_status
;
2069 switch(type
->type_class
) {
2074 field
->field_size
= ltt_type_size(tf
->trace
, type
);
2075 field
->fixed_size
= FIELD_FIXED
;
2078 field
->field_size
= (off_t
)event_type
->facility
->pointer_size
;
2079 field
->fixed_size
= FIELD_FIXED
;
2083 field
->field_size
= (off_t
)event_type
->facility
->long_size
;
2084 field
->fixed_size
= FIELD_FIXED
;
2089 field
->field_size
= (off_t
)event_type
->facility
->size_t_size
;
2090 field
->fixed_size
= FIELD_FIXED
;
2093 local_fixed_root
= FIELD_VARIABLE
;
2094 local_fixed_parent
= FIELD_VARIABLE
;
2095 preset_field_type_size(tf
, event_type
,
2097 &local_fixed_root
, &local_fixed_parent
,
2099 field
->fixed_size
= FIELD_VARIABLE
;
2100 field
->field_size
= 0;
2101 *fixed_root
= FIELD_VARIABLE
;
2102 *fixed_parent
= FIELD_VARIABLE
;
2105 field
->fixed_size
= FIELD_VARIABLE
;
2106 field
->field_size
= 0;
2107 *fixed_root
= FIELD_VARIABLE
;
2108 *fixed_parent
= FIELD_VARIABLE
;
2111 local_fixed_root
= FIELD_VARIABLE
;
2112 local_fixed_parent
= FIELD_VARIABLE
;
2113 preset_field_type_size(tf
, event_type
,
2115 &local_fixed_root
, &local_fixed_parent
,
2117 field
->fixed_size
= field
->child
[0]->fixed_size
;
2118 if(field
->fixed_size
== FIELD_FIXED
) {
2119 field
->field_size
= type
->element_number
* field
->child
[0]->field_size
;
2121 field
->field_size
= 0;
2122 *fixed_root
= FIELD_VARIABLE
;
2123 *fixed_parent
= FIELD_VARIABLE
;
2127 current_root_offset
= field
->offset_root
;
2129 current_child_status
= FIELD_FIXED
;
2130 for(i
=0;i
<type
->element_number
;i
++) {
2131 preset_field_type_size(tf
, event_type
,
2132 current_root_offset
, current_offset
,
2133 fixed_root
, ¤t_child_status
,
2135 if(current_child_status
== FIELD_FIXED
) {
2136 current_root_offset
+= field
->child
[i
]->field_size
;
2137 current_offset
+= field
->child
[i
]->field_size
;
2139 current_root_offset
= 0;
2143 if(current_child_status
!= FIELD_FIXED
) {
2144 *fixed_parent
= current_child_status
;
2145 field
->field_size
= 0;
2146 field
->fixed_size
= current_child_status
;
2148 field
->field_size
= current_offset
;
2149 field
->fixed_size
= FIELD_FIXED
;
2153 current_root_offset
= field
->offset_root
;
2156 final_child_status
= FIELD_FIXED
;
2157 for(i
=0;i
<type
->element_number
;i
++) {
2158 enum field_status current_root_child_status
= FIELD_FIXED
;
2159 enum field_status current_child_status
= FIELD_FIXED
;
2160 preset_field_type_size(tf
, event_type
,
2161 current_root_offset
, current_offset
,
2162 ¤t_root_child_status
, ¤t_child_status
,
2164 if(current_child_status
!= FIELD_FIXED
)
2165 final_child_status
= current_child_status
;
2167 max_size
= max(max_size
, field
->child
[i
]->field_size
);
2169 if(final_child_status
!= FIELD_FIXED
) {
2170 *fixed_root
= final_child_status
;
2171 *fixed_parent
= final_child_status
;
2172 field
->field_size
= 0;
2173 field
->fixed_size
= current_child_status
;
2175 field
->field_size
= max_size
;
2176 field
->fixed_size
= FIELD_FIXED
;
2184 /*****************************************************************************
2186 * check_fields_compatibility : Check for compatibility between two fields :
2187 * do they use the same inner structure ?
2189 * event_type1 : event type
2190 * event_type2 : event type
2193 *Returns : 0 if identical
2195 ****************************************************************************/
2196 gint
check_fields_compatibility(LttEventType
*event_type1
,
2197 LttEventType
*event_type2
,
2198 LttField
*field1
, LttField
*field2
)
2200 guint different
= 0;
2205 if(field1
== NULL
) {
2206 if(field2
== NULL
) goto end
;
2211 } else if(field2
== NULL
) {
2216 g_assert(field1
->fixed_root
!= FIELD_UNKNOWN
);
2217 g_assert(field2
->fixed_root
!= FIELD_UNKNOWN
);
2218 g_assert(field1
->fixed_parent
!= FIELD_UNKNOWN
);
2219 g_assert(field2
->fixed_parent
!= FIELD_UNKNOWN
);
2220 g_assert(field1
->fixed_size
!= FIELD_UNKNOWN
);
2221 g_assert(field2
->fixed_size
!= FIELD_UNKNOWN
);
2223 type1
= field1
->field_type
;
2224 type2
= field2
->field_type
;
2226 if(type1
->type_class
!= type2
->type_class
) {
2230 if(type1
->element_name
!= type2
->element_name
) {
2235 switch(type1
->type_class
) {
2245 if(field1
->field_size
!= field2
->field_size
) {
2251 if(type1
->element_number
!= type2
->element_number
) {
2255 for(i
=0;i
<type1
->element_number
;i
++) {
2256 if(type1
->enum_strings
[i
] != type2
->enum_strings
[i
]) {
2263 /* Two elements : size and child */
2264 g_assert(type1
->element_number
!= type2
->element_number
);
2265 for(i
=0;i
<type1
->element_number
;i
++) {
2266 if(check_fields_compatibility(event_type1
, event_type2
,
2267 field1
->child
[0], field2
->child
[0])) {
2276 if(field1
->field_size
!= field2
->field_size
) {
2280 /* Two elements : size and child */
2281 g_assert(type1
->element_number
!= type2
->element_number
);
2282 for(i
=0;i
<type1
->element_number
;i
++) {
2283 if(check_fields_compatibility(event_type1
, event_type2
,
2284 field1
->child
[0], field2
->child
[0])) {
2292 if(type1
->element_number
!= type2
->element_number
) {
2296 for(i
=0;i
<type1
->element_number
;i
++) {
2297 if(check_fields_compatibility(event_type1
, event_type2
,
2298 field1
->child
[0], field2
->child
[0])) {
2313 /*****************************************************************************
2315 * getFieldtypeSize: get the size of the field type (primitive type)
2318 * offsetRoot : offset from the root
2319 * offsetParent : offset from the parrent
2321 * evD : event data, it may be NULL
2323 * int : size of the field
2324 ****************************************************************************/
2326 static inline gint
getFieldtypeSize(LttTracefile
*tf
,
2327 LttEventType
* evT
, gint offsetRoot
,
2328 gint offsetParent
, LttField
* fld
, void *evD
)
2330 gint size
, size1
, element_number
, i
, offset1
, offset2
;
2331 LttType
* type
= fld
->field_type
;
2333 /* This likely has been tested with gcov : half of them.. */
2334 if(unlikely(fld
->field_fixed
== 1)){
2336 if(unlikely(fld
== evT
->root_field
)) {
2337 size
= fld
->field_size
;
2338 goto end_getFieldtypeSize
;
2342 /* From gcov profiling : half string, half struct, can we gain something
2343 * from that ? (Mathieu) */
2344 switch(type
->type_class
) {
2346 element_number
= (int) type
->element_number
;
2347 if(fld
->field_fixed
== -1){
2348 size
= getFieldtypeSize(tf
, evT
, offsetRoot
,
2349 0,fld
->child
[0], NULL
);
2350 if(size
== 0){ //has string or sequence
2351 fld
->field_fixed
= 0;
2353 fld
->field_fixed
= 1;
2354 size
*= element_number
;
2356 }else if(fld
->field_fixed
== 0){// has string or sequence
2358 for(i
=0;i
<element_number
;i
++){
2359 size
+= getFieldtypeSize(tf
, evT
, offsetRoot
+size
,size
,
2360 fld
->child
[0], evD
+size
);
2362 }else size
= fld
->field_size
;
2364 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2365 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2371 size1
= (int) ltt_type_size(fac
, type
);
2372 if(fld
->field_fixed
== -1){
2373 fld
->sequ_number_size
= size1
;
2374 fld
->field_fixed
= 0;
2375 size
= getFieldtypeSize(evT
, offsetRoot
,
2376 0,fld
->child
[0], NULL
);
2377 fld
->element_size
= size
;
2379 element_number
= getIntNumber(tf
,size1
,evD
);
2380 type
->element_number
= element_number
;
2381 if(fld
->element_size
> 0){
2382 size
= element_number
* fld
->element_size
;
2383 }else{//sequence has string or sequence
2385 for(i
=0;i
<element_number
;i
++){
2386 size
+= getFieldtypeSize(tf
, evT
,
2387 offsetRoot
+size
+size1
,size
+size1
,
2388 fld
->child
[0], evD
+size
+size1
);
2394 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2395 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2402 if(fld
->field_fixed
== -1){
2403 fld
->field_fixed
= 0;
2405 /* Hope my implementation is faster than strlen (Mathieu) */
2406 char *ptr
=(char*)evD
;
2408 /* from gcov : many many strings are empty, make it the common case.*/
2409 while(unlikely(*ptr
!= '\0')) { size
++; ptr
++; }
2410 //size = ptr - (char*)evD + 1; //include end : '\0'
2412 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2413 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2418 element_number
= (int) type
->element_number
;
2420 /* tested with gcov */
2421 if(unlikely(fld
->field_fixed
== -1)){
2422 offset1
= offsetRoot
;
2424 for(i
=0;i
<element_number
;i
++){
2425 size1
=getFieldtypeSize(tf
, evT
,offset1
,offset2
,
2426 fld
->child
[i
], NULL
);
2427 if(likely(size1
> 0 && size
>= 0)){
2429 if(likely(offset1
>= 0)) offset1
+= size1
;
2437 if(unlikely(size
== -1)){
2438 fld
->field_fixed
= 0;
2440 }else fld
->field_fixed
= 1;
2441 }else if(likely(fld
->field_fixed
== 0)){
2442 offset1
= offsetRoot
;
2444 for(i
=0;unlikely(i
<element_number
);i
++){
2445 size
=getFieldtypeSize(tf
, evT
, offset1
, offset2
,
2446 fld
->child
[i
], evD
+offset2
);
2451 }else size
= fld
->field_size
;
2452 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2453 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2457 if(unlikely(fld
->field_fixed
== -1)){
2458 size
= (int) ltt_type_size(LTT_GET_BO(tf
), type
);
2459 fld
->field_fixed
= 1;
2460 }else size
= fld
->field_size
;
2462 fld
->fixed_root
= (offsetRoot
==-1) ? 0 : 1;
2463 fld
->fixed_parent
= (offsetParent
==-1) ? 0 : 1;
2468 fld
->offset_root
= offsetRoot
;
2469 fld
->offset_parent
= offsetParent
;
2470 fld
->field_size
= size
;
2472 end_getFieldtypeSize
:
2478 /*****************************************************************************
2480 * ltt_get_int : get an integer number
2482 * reverse_byte_order: must we reverse the byte order ?
2483 * size : the size of the integer
2484 * ptr : the data pointer
2486 * gint64 : a 64 bits integer
2487 ****************************************************************************/
2489 gint64
ltt_get_int(gboolean reverse_byte_order
, gint size
, void *data
)
2494 case 1: val
= *((gint8
*)data
); break;
2495 case 2: val
= ltt_get_int16(reverse_byte_order
, data
); break;
2496 case 4: val
= ltt_get_int32(reverse_byte_order
, data
); break;
2497 case 8: val
= ltt_get_int64(reverse_byte_order
, data
); break;
2498 default: val
= ltt_get_int64(reverse_byte_order
, data
);
2499 g_critical("get_int : integer size %d unknown", size
);
2506 /*****************************************************************************
2508 * ltt_get_uint : get an unsigned integer number
2510 * reverse_byte_order: must we reverse the byte order ?
2511 * size : the size of the integer
2512 * ptr : the data pointer
2514 * guint64 : a 64 bits unsigned integer
2515 ****************************************************************************/
2517 guint64
ltt_get_uint(gboolean reverse_byte_order
, gint size
, void *data
)
2522 case 1: val
= *((gint8
*)data
); break;
2523 case 2: val
= ltt_get_uint16(reverse_byte_order
, data
); break;
2524 case 4: val
= ltt_get_uint32(reverse_byte_order
, data
); break;
2525 case 8: val
= ltt_get_uint64(reverse_byte_order
, data
); break;
2526 default: val
= ltt_get_uint64(reverse_byte_order
, data
);
2527 g_critical("get_uint : unsigned integer size %d unknown",
2536 /* get the node name of the system */
2538 char * ltt_trace_system_description_node_name (LttSystemDescription
* s
)
2540 return s
->node_name
;
2544 /* get the domain name of the system */
2546 char * ltt_trace_system_description_domain_name (LttSystemDescription
* s
)
2548 return s
->domain_name
;
2552 /* get the description of the system */
2554 char * ltt_trace_system_description_description (LttSystemDescription
* s
)
2556 return s
->description
;
2560 /* get the NTP corrected start time of the trace */
2561 LttTime
ltt_trace_start_time(LttTrace
*t
)
2563 return t
->start_time
;
2566 /* get the monotonic start time of the trace */
2567 LttTime
ltt_trace_start_time_monotonic(LttTrace
*t
)
2569 return t
->start_time_from_tsc
;
2572 LttTracefile
*ltt_tracefile_new()
2574 return g_new(LttTracefile
, 1);
2577 void ltt_tracefile_destroy(LttTracefile
*tf
)
2582 void ltt_tracefile_copy(LttTracefile
*dest
, const LttTracefile
*src
)
2587 /* Before library loading... */
2589 static void __attribute__((constructor
)) init(void)
2591 LTT_FACILITY_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
2592 LTT_EVENT_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
2594 LTT_TRACEFILE_NAME_FACILITIES
= g_quark_from_string("/control/facilities");