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 library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License Version 2.1 as published by the Free Software Foundation.
10 * This library 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 GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
30 #include <sys/types.h>
46 #include "ltt-private.h"
47 #include <ltt/trace.h>
48 #include <ltt/event.h>
49 //#include <ltt/type.h>
50 #include <ltt/ltt-types.h>
51 #include <ltt/marker.h>
53 /* Facility names used in this file */
55 GQuark LTT_FACILITY_NAME_HEARTBEAT
,
56 LTT_EVENT_NAME_HEARTBEAT
,
57 LTT_EVENT_NAME_HEARTBEAT_FULL
;
58 GQuark LTT_TRACEFILE_NAME_FACILITIES
;
65 #define __UNUSED__ __attribute__((__unused__))
67 #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format)
70 #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format)
75 /* Those macros must be called from within a function where page_size is a known
77 #define PAGE_MASK (~(page_size-1))
78 #define PAGE_ALIGN(addr) (((addr)+page_size-1)&PAGE_MASK)
80 /* set the offset of the fields belonging to the event,
81 need the information of the archecture */
82 //void set_fields_offsets(LttTracefile *tf, LttEventType *event_type);
83 //size_t get_fields_offsets(LttTracefile *tf, LttEventType *event_type, void *data);
85 /* get the size of the field type according to
86 * The facility size information. */
88 static inline void preset_field_type_size(LttTracefile
*tf
,
89 LttEventType
*event_type
,
90 off_t offset_root
, off_t offset_parent
,
91 enum field_status
*fixed_root
, enum field_status
*fixed_parent
,
95 /* map a fixed size or a block information from the file (fd) */
96 static gint
map_block(LttTracefile
* tf
, guint block_num
);
98 /* calculate nsec per cycles for current block */
100 static guint32
calc_nsecs_per_cycle(LttTracefile
* t
);
101 static guint64
cycles_2_ns(LttTracefile
*tf
, guint64 cycles
);
104 /* go to the next event */
105 static int ltt_seek_next_event(LttTracefile
*tf
);
107 //void ltt_update_event_size(LttTracefile *tf);
109 static int open_tracefiles(LttTrace
*trace
, gchar
*root_path
,
110 gchar
*relative_path
);
111 static int ltt_process_facility_tracefile(LttTracefile
*tf
);
112 static void ltt_tracefile_time_span_get(LttTracefile
*tf
,
113 LttTime
*start
, LttTime
*end
);
114 static void group_time_span_get(GQuark name
, gpointer data
, gpointer user_data
);
115 static gint
map_block(LttTracefile
* tf
, guint block_num
);
116 static int ltt_seek_next_event(LttTracefile
*tf
);
117 static void __attribute__((constructor
)) init(void);
118 static void ltt_update_event_size(LttTracefile
*tf
);
119 //void precompute_offsets(LttFacility *fac, LttEventType *event);
122 /* Functions to parse system.xml file (using glib xml parser) */
123 static void parser_start_element (GMarkupParseContext __UNUSED__
*context
,
124 const gchar
*element_name
,
125 const gchar
**attribute_names
,
126 const gchar
**attribute_values
,
131 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
132 if(strcmp("system", element_name
)){
133 *error
= g_error_new(G_MARKUP_ERROR
,
135 "This is not system.xml file");
139 while(attribute_names
[i
]){
140 if(strcmp("node_name", attribute_names
[i
])==0){
141 des
->node_name
= g_strdup(attribute_values
[i
]);
142 }else if(strcmp("domainname", attribute_names
[i
])==0){
143 des
->domain_name
= g_strdup(attribute_values
[i
]);
144 }else if(strcmp("cpu", attribute_names
[i
])==0){
145 des
->nb_cpu
= atoi(attribute_values
[i
]);
146 }else if(strcmp("arch_size", attribute_names
[i
])==0){
147 if(strcmp(attribute_values
[i
],"LP32") == 0) des
->size
= LTT_LP32
;
148 else if(strcmp(attribute_values
[i
],"ILP32") == 0) des
->size
= LTT_ILP32
;
149 else if(strcmp(attribute_values
[i
],"LP64") == 0) des
->size
= LTT_LP64
;
150 else if(strcmp(attribute_values
[i
],"ILP64") == 0) des
->size
= LTT_ILP64
;
151 else if(strcmp(attribute_values
[i
],"UNKNOWN") == 0) des
->size
= LTT_UNKNOWN
;
152 }else if(strcmp("endian", attribute_names
[i
])==0){
153 if(strcmp(attribute_values
[i
],"LITTLE_ENDIAN") == 0)
154 des
->endian
= LTT_LITTLE_ENDIAN
;
155 else if(strcmp(attribute_values
[i
],"BIG_ENDIAN") == 0)
156 des
->endian
= LTT_BIG_ENDIAN
;
157 }else if(strcmp("kernel_name", attribute_names
[i
])==0){
158 des
->kernel_name
= g_strdup(attribute_values
[i
]);
159 }else if(strcmp("kernel_release", attribute_names
[i
])==0){
160 des
->kernel_release
= g_strdup(attribute_values
[i
]);
161 }else if(strcmp("kernel_version", attribute_names
[i
])==0){
162 des
->kernel_version
= g_strdup(attribute_values
[i
]);
163 }else if(strcmp("machine", attribute_names
[i
])==0){
164 des
->machine
= g_strdup(attribute_values
[i
]);
165 }else if(strcmp("processor", attribute_names
[i
])==0){
166 des
->processor
= g_strdup(attribute_values
[i
]);
167 }else if(strcmp("hardware_platform", attribute_names
[i
])==0){
168 des
->hardware_platform
= g_strdup(attribute_values
[i
]);
169 }else if(strcmp("operating_system", attribute_names
[i
])==0){
170 des
->operating_system
= g_strdup(attribute_values
[i
]);
171 }else if(strcmp("ltt_major_version", attribute_names
[i
])==0){
172 des
->ltt_major_version
= atoi(attribute_values
[i
]);
173 }else if(strcmp("ltt_minor_version", attribute_names
[i
])==0){
174 des
->ltt_minor_version
= atoi(attribute_values
[i
]);
175 }else if(strcmp("ltt_block_size", attribute_names
[i
])==0){
176 des
->ltt_block_size
= atoi(attribute_values
[i
]);
178 *error
= g_error_new(G_MARKUP_ERROR
,
180 "Not a valid attribute");
187 static void parser_characters (GMarkupParseContext __UNUSED__
*context
,
189 gsize __UNUSED__ text_len
,
191 GError __UNUSED__
**error
)
193 LttSystemDescription
* des
= (LttSystemDescription
* )user_data
;
194 des
->description
= g_strdup(text
);
199 LttFacility
*ltt_trace_get_facility_by_num(LttTrace
*t
,
202 g_assert(num
< t
->facilities_by_num
->len
);
204 return &g_array_index(t
->facilities_by_num
, LttFacility
, num
);
209 guint
ltt_trace_get_num_cpu(LttTrace
*t
)
217 * Return value : 0 success, 1 bad tracefile
219 int parse_trace_header(void *header
, LttTracefile
*tf
, LttTrace
*t
)
221 guint32
*magic_number
= (guint32
*)header
;
222 struct ltt_trace_header_any
*any
= (struct ltt_trace_header_any
*)header
;
224 if(*magic_number
== LTT_MAGIC_NUMBER
)
226 else if(*magic_number
== LTT_REV_MAGIC_NUMBER
)
228 else /* invalid magic number, bad tracefile ! */
231 /* Get float byte order : might be different from int byte order
232 * (or is set to 0 if the trace has no float (kernel trace)) */
233 tf
->float_word_order
= any
->float_word_order
;
234 tf
->alignment
= any
->alignment
;
235 tf
->has_heartbeat
= any
->has_heartbeat
;
238 t
->arch_type
= ltt_get_uint32(LTT_GET_BO(tf
),
240 t
->arch_variant
= ltt_get_uint32(LTT_GET_BO(tf
),
242 t
->arch_size
= any
->arch_size
;
243 t
->ltt_major_version
= any
->major_version
;
244 t
->ltt_minor_version
= any
->minor_version
;
245 t
->flight_recorder
= any
->flight_recorder
;
246 // t->compact_facilities = NULL;
249 switch(any
->major_version
) {
252 g_warning("Unsupported trace version : %hhu.%hhu",
253 any
->major_version
, any
->minor_version
);
257 switch(any
->minor_version
) {
260 struct ltt_trace_header_1_0
*vheader
=
261 (struct ltt_trace_header_1_0
*)header
;
262 tf
->buffer_header_size
=
263 sizeof(struct ltt_block_start_header
)
264 + sizeof(struct ltt_trace_header_1_0
);
265 tf
->tsc_lsb_truncate
= vheader
->tsc_lsb_truncate
;
266 tf
->tscbits
= vheader
->tscbits
;
267 tf
->tsc_msb_cutoff
= 32 - tf
->tsc_lsb_truncate
- tf
->tscbits
;
268 tf
->tsc_mask
= ((1ULL << (tf
->tscbits
))-1);
269 tf
->tsc_mask
= tf
->tsc_mask
<< tf
->tsc_lsb_truncate
;
270 tf
->tsc_mask_next_bit
= (1ULL<<(tf
->tscbits
));
271 tf
->tsc_mask_next_bit
= tf
->tsc_mask_next_bit
<< tf
->tsc_lsb_truncate
;
273 t
->start_freq
= ltt_get_uint64(LTT_GET_BO(tf
),
274 &vheader
->start_freq
);
275 t
->freq_scale
= ltt_get_uint32(LTT_GET_BO(tf
),
276 &vheader
->freq_scale
);
277 t
->start_tsc
= ltt_get_uint64(LTT_GET_BO(tf
),
278 &vheader
->start_tsc
);
279 t
->start_monotonic
= ltt_get_uint64(LTT_GET_BO(tf
),
280 &vheader
->start_monotonic
);
281 t
->start_time
.tv_sec
= ltt_get_uint64(LTT_GET_BO(tf
),
282 &vheader
->start_time_sec
);
283 t
->start_time
.tv_nsec
= ltt_get_uint64(LTT_GET_BO(tf
),
284 &vheader
->start_time_usec
);
285 t
->start_time
.tv_nsec
*= 1000; /* microsec to nanosec */
287 t
->start_time_from_tsc
= ltt_time_from_uint64(
289 * (1000000000.0 / tf
->trace
->freq_scale
)
290 / (double)t
->start_freq
);
291 t
->compact_event_bits
= 0;
296 g_warning("Unsupported trace version : %hhu.%hhu",
297 any
->major_version
, any
->minor_version
);
302 g_warning("Unsupported trace version : %hhu.%hhu",
303 any
->major_version
, any
->minor_version
);
313 /*****************************************************************************
315 * ltt_tracefile_open : open a trace file, construct a LttTracefile
317 * t : the trace containing the tracefile
318 * fileName : path name of the trace file
319 * tf : the tracefile structure
321 * : 0 for success, -1 otherwise.
322 ****************************************************************************/
324 gint
ltt_tracefile_open(LttTrace
*t
, gchar
* fileName
, LttTracefile
*tf
)
326 struct stat lTDFStat
; /* Trace data file status */
327 struct ltt_block_start_header
*header
;
328 int page_size
= getpagesize();
331 tf
->long_name
= g_quark_from_string(fileName
);
333 tf
->fd
= open(fileName
, O_RDONLY
);
335 g_warning("Unable to open input data file %s\n", fileName
);
339 // Get the file's status
340 if(fstat(tf
->fd
, &lTDFStat
) < 0){
341 g_warning("Unable to get the status of the input data file %s\n", fileName
);
345 // Is the file large enough to contain a trace
346 if(lTDFStat
.st_size
<
347 (off_t
)(sizeof(struct ltt_block_start_header
)
348 + sizeof(struct ltt_trace_header_any
))){
349 g_print("The input data file %s does not contain a trace\n", fileName
);
353 /* Temporarily map the buffer start header to get trace information */
354 /* Multiple of pages aligned head */
355 tf
->buffer
.head
= mmap(0,
356 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
357 + sizeof(struct ltt_trace_header_any
)), PROT_READ
,
358 MAP_PRIVATE
, tf
->fd
, 0);
359 if(tf
->buffer
.head
== MAP_FAILED
) {
360 perror("Error in allocating memory for buffer of tracefile");
363 g_assert( ( (guint
)tf
->buffer
.head
&(8-1) ) == 0); // make sure it's aligned.
365 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
367 if(parse_trace_header(header
->trace
, tf
, NULL
)) {
368 g_warning("parse_trace_header error");
372 //store the size of the file
373 tf
->file_size
= lTDFStat
.st_size
;
374 tf
->buf_size
= ltt_get_uint32(LTT_GET_BO(tf
), &header
->buf_size
);
375 tf
->num_blocks
= tf
->file_size
/ tf
->buf_size
;
377 if(munmap(tf
->buffer
.head
,
378 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
379 + sizeof(struct ltt_trace_header_any
)))) {
380 g_warning("unmap size : %u\n",
381 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
382 + sizeof(struct ltt_trace_header_any
)));
383 perror("munmap error");
386 tf
->buffer
.head
= NULL
;
388 //read the first block
389 if(map_block(tf
,0)) {
390 perror("Cannot map block for tracefile");
398 if(munmap(tf
->buffer
.head
,
399 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
400 + sizeof(struct ltt_trace_header_any
)))) {
401 g_warning("unmap size : %u\n",
402 PAGE_ALIGN(sizeof(struct ltt_block_start_header
)
403 + sizeof(struct ltt_trace_header_any
)));
404 perror("munmap error");
413 LttTrace
*ltt_tracefile_get_trace(LttTracefile
*tf
)
419 /*****************************************************************************
420 *Open control and per cpu tracefiles
421 ****************************************************************************/
423 void ltt_tracefile_open_cpu(LttTrace
*t
, gchar
* tracefile_name
)
426 tf
= ltt_tracefile_open(t
,tracefile_name
);
428 t
->per_cpu_tracefile_number
++;
429 g_ptr_array_add(t
->per_cpu_tracefiles
, tf
);
432 gint
ltt_tracefile_open_control(LttTrace
*t
, gchar
* control_name
)
441 tf
= ltt_tracefile_open(t
,control_name
);
443 g_warning("ltt_tracefile_open_control : bad file descriptor");
446 t
->control_tracefile_number
++;
447 g_ptr_array_add(t
->control_tracefiles
,tf
);
449 //parse facilities tracefile to get base_id
450 if(strcmp(&control_name
[strlen(control_name
)-10],"facilities") ==0){
452 if(!ltt_tracefile_read(tf
,&ev
)) return 0; // end of file
454 if(ev
.event_id
== TRACE_FACILITY_LOAD
){
456 fLoad
.name
= (gchar
*)pos
;
457 fLoad
.checksum
= *(LttChecksum
*)(pos
+ strlen(fLoad
.name
));
458 fLoad
.base_code
= *(guint32
*)(pos
+ strlen(fLoad
.name
) + sizeof(LttChecksum
));
460 for(i
=0;i
<t
->facility_number
;i
++){
461 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
,i
);
462 if(strcmp(f
->name
,fLoad
.name
)==0 && fLoad
.checksum
==f
->checksum
){
463 f
->base_id
= fLoad
.base_code
;
467 if(i
==t
->facility_number
) {
468 g_warning("Facility: %s, checksum: %u is not found",
469 fLoad
.name
,(unsigned int)fLoad
.checksum
);
472 }else if(ev
.event_id
== TRACE_BLOCK_START
){
474 }else if(ev
.event_id
== TRACE_BLOCK_END
){
477 g_warning("Not valid facilities trace file");
486 /*****************************************************************************
488 * ltt_tracefile_close: close a trace file,
490 * t : tracefile which will be closed
491 ****************************************************************************/
493 void ltt_tracefile_close(LttTracefile
*t
)
495 int page_size
= getpagesize();
497 if(t
->buffer
.head
!= NULL
)
498 if(munmap(t
->buffer
.head
, PAGE_ALIGN(t
->buf_size
))) {
499 g_warning("unmap size : %u\n",
500 PAGE_ALIGN(t
->buf_size
));
501 perror("munmap error");
509 /*****************************************************************************
510 *Get system information
511 ****************************************************************************/
513 gint
getSystemInfo(LttSystemDescription
* des
, gchar
* pathname
)
520 GMarkupParseContext
* context
;
521 GError
* error
= NULL
;
522 GMarkupParser markup_parser
=
524 parser_start_element
,
527 NULL
, /* passthrough */
531 fd
= g_open(pathname
, O_RDONLY
, 0);
533 g_warning("Can not open file : %s\n", pathname
);
537 iochan
= g_io_channel_unix_new(fd
);
539 context
= g_markup_parse_context_new(&markup_parser
, 0, des
,NULL
);
541 //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){
542 while(g_io_channel_read_line(iochan
, &buf
, &length
, NULL
, &error
)
543 != G_IO_STATUS_EOF
) {
546 g_warning("Can not read xml file: \n%s\n", error
->message
);
549 if(!g_markup_parse_context_parse(context
, buf
, length
, &error
)){
551 g_warning("Can not parse xml file: \n%s\n", error
->message
);
554 g_markup_parse_context_free(context
);
556 g_io_channel_shutdown(iochan
, FALSE
, &error
); /* No flush */
558 g_warning("Can not close file: \n%s\n", error
->message
);
566 g_markup_parse_context_free(context
);
568 g_io_channel_shutdown(iochan
, FALSE
, &error
); /* No flush */
570 g_warning("Can not close file: \n%s\n", error
->message
);
581 /*****************************************************************************
582 *The following functions get facility/tracefile information
583 ****************************************************************************/
585 gint
getFacilityInfo(LttTrace
*t
, gchar
* eventdefs
)
592 gchar fullname
[DIR_NAME_SIZE
];
593 GError
* error
= NULL
;
595 dir
= g_dir_open(eventdefs
, 0, &error
);
598 g_warning("Can not open directory: %s, %s\n", eventdefs
, error
->message
);
603 while((name
= g_dir_read_name(dir
)) != NULL
){
604 if(!g_pattern_match_simple("*.xml", name
)) continue;
605 strcpy(fullname
,eventdefs
);
606 strcat(fullname
,name
);
607 ltt_facility_open(t
,fullname
);
611 for(j
=0;j
<t
->facility_number
;j
++){
612 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, j
);
613 for(i
=0; i
<f
->event_number
; i
++){
615 setFieldsOffset(NULL
, et
, NULL
, t
);
622 /*****************************************************************************
623 *A trace is specified as a pathname to the directory containing all the
624 *associated data (control tracefiles, per cpu tracefiles, event
627 *When a trace is closed, all the associated facilities, types and fields
628 *are released as well.
632 /****************************************************************************
633 * get_absolute_pathname
635 * return the unique pathname in the system
637 * MD : Fixed this function so it uses realpath, dealing well with
638 * forgotten cases (.. were not used correctly before).
640 ****************************************************************************/
641 void get_absolute_pathname(const gchar
*pathname
, gchar
* abs_pathname
)
643 abs_pathname
[0] = '\0';
645 if ( realpath (pathname
, abs_pathname
) != NULL
)
649 /* error, return the original path unmodified */
650 strcpy(abs_pathname
, pathname
);
656 /* Search for something like : .*_.*
658 * The left side is the name, the right side is the number.
661 int get_tracefile_name_number(gchar
*raw_name
,
668 guint raw_name_len
= strlen(raw_name
);
669 gchar char_name
[PATH_MAX
];
676 for(i
=raw_name_len
-1;i
>=0;i
--) {
677 if(raw_name
[i
] == '_') break;
679 if(i
==-1) { /* Either not found or name length is 0 */
680 /* This is a userspace tracefile */
681 strncpy(char_name
, raw_name
, raw_name_len
);
682 char_name
[raw_name_len
] = '\0';
683 *name
= g_quark_from_string(char_name
);
684 *num
= 0; /* unknown cpu */
685 for(i
=0;i
<raw_name_len
;i
++) {
686 if(raw_name
[i
] == '/') {
691 for(;i
<raw_name_len
;i
++) {
692 if(raw_name
[i
] == '/') {
697 for(;i
<raw_name_len
;i
++) {
698 if(raw_name
[i
] == '-') {
702 if(i
== raw_name_len
) return -1;
704 tmpptr
= &raw_name
[i
];
705 for(;i
<raw_name_len
;i
++) {
706 if(raw_name
[i
] == '.') {
711 *tid
= strtoul(tmpptr
, &endptr
, 10);
713 return -1; /* No digit */
714 if(*tid
== ULONG_MAX
)
715 return -1; /* underflow / overflow */
717 tmpptr
= &raw_name
[i
];
718 for(;i
<raw_name_len
;i
++) {
719 if(raw_name
[i
] == '.') {
724 *pgid
= strtoul(tmpptr
, &endptr
, 10);
726 return -1; /* No digit */
727 if(*pgid
== ULONG_MAX
)
728 return -1; /* underflow / overflow */
730 tmpptr
= &raw_name
[i
];
731 *creation
= strtoull(tmpptr
, &endptr
, 10);
733 return -1; /* No digit */
734 if(*creation
== G_MAXUINT64
)
735 return -1; /* underflow / overflow */
739 cpu_num
= strtol(raw_name
+underscore_pos
+1, &endptr
, 10);
741 if(endptr
== raw_name
+underscore_pos
+1)
742 return -1; /* No digit */
743 if(cpu_num
== LONG_MIN
|| cpu_num
== LONG_MAX
)
744 return -1; /* underflow / overflow */
746 strncpy(char_name
, raw_name
, underscore_pos
);
747 char_name
[underscore_pos
] = '\0';
749 *name
= g_quark_from_string(char_name
);
758 GData
**ltt_trace_get_tracefiles_groups(LttTrace
*trace
)
760 return &trace
->tracefiles
;
764 void compute_tracefile_group(GQuark key_id
,
766 struct compute_tracefile_group_args
*args
)
771 for(i
=0; i
<group
->len
; i
++) {
772 tf
= &g_array_index (group
, LttTracefile
, i
);
774 args
->func(tf
, args
->func_args
);
779 void ltt_tracefile_group_destroy(gpointer data
)
781 GArray
*group
= (GArray
*)data
;
785 for(i
=0; i
<group
->len
; i
++) {
786 tf
= &g_array_index (group
, LttTracefile
, i
);
788 ltt_tracefile_close(tf
);
790 g_array_free(group
, TRUE
);
793 gboolean
ltt_tracefile_group_has_cpu_online(gpointer data
)
795 GArray
*group
= (GArray
*)data
;
799 for(i
=0; i
<group
->len
; i
++) {
800 tf
= &g_array_index (group
, LttTracefile
, i
);
808 /* Open each tracefile under a specific directory. Put them in a
809 * GData : permits to access them using their tracefile group pathname.
810 * i.e. access control/modules tracefile group by index :
813 * relative path is the path relative to the trace root
814 * root path is the full path
816 * A tracefile group is simply an array where all the per cpu tracefiles sit.
819 int open_tracefiles(LttTrace
*trace
, gchar
*root_path
, gchar
*relative_path
)
821 DIR *dir
= opendir(root_path
);
822 struct dirent
*entry
;
823 struct stat stat_buf
;
826 gchar path
[PATH_MAX
];
831 gchar rel_path
[PATH_MAX
];
840 strncpy(path
, root_path
, PATH_MAX
-1);
841 path_len
= strlen(path
);
842 path
[path_len
] = '/';
844 path_ptr
= path
+ path_len
;
846 strncpy(rel_path
, relative_path
, PATH_MAX
-1);
847 rel_path_len
= strlen(rel_path
);
848 rel_path
[rel_path_len
] = '/';
850 rel_path_ptr
= rel_path
+ rel_path_len
;
852 while((entry
= readdir(dir
)) != NULL
) {
854 if(entry
->d_name
[0] == '.') continue;
856 strncpy(path_ptr
, entry
->d_name
, PATH_MAX
- path_len
);
857 strncpy(rel_path_ptr
, entry
->d_name
, PATH_MAX
- rel_path_len
);
859 ret
= stat(path
, &stat_buf
);
865 g_debug("Tracefile file or directory : %s\n", path
);
867 if(strcmp(rel_path
, "/eventdefs") == 0) continue;
869 if(S_ISDIR(stat_buf
.st_mode
)) {
871 g_debug("Entering subdirectory...\n");
872 ret
= open_tracefiles(trace
, path
, rel_path
);
873 if(ret
< 0) continue;
874 } else if(S_ISREG(stat_buf
.st_mode
)) {
876 guint num
, tid
, pgid
;
879 num
= tid
= pgid
= 0;
881 if(get_tracefile_name_number(rel_path
, &name
, &num
, &tid
, &pgid
, &creation
))
882 continue; /* invalid name */
884 g_debug("Opening file.\n");
885 if(ltt_tracefile_open(trace
, path
, &tmp_tf
)) {
886 g_info("Error opening tracefile %s", path
);
888 continue; /* error opening the tracefile : bad magic number ? */
891 g_debug("Tracefile name is %s and number is %u",
892 g_quark_to_string(name
), num
);
894 tmp_tf
.cpu_online
= 1;
895 tmp_tf
.cpu_num
= num
;
899 tmp_tf
.creation
= creation
;
900 if(tmp_tf
.name
== g_quark_from_string("/compact")
901 || tmp_tf
.name
== g_quark_from_string("/flight-compact"))
905 group
= g_datalist_id_get_data(&trace
->tracefiles
, name
);
907 /* Elements are automatically cleared when the array is allocated.
908 * It makes the cpu_online variable set to 0 : cpu offline, by default.
910 group
= g_array_sized_new (FALSE
, TRUE
, sizeof(LttTracefile
), 10);
911 g_datalist_id_set_data_full(&trace
->tracefiles
, name
,
912 group
, ltt_tracefile_group_destroy
);
915 /* Add the per cpu tracefile to the named group */
916 unsigned int old_len
= group
->len
;
918 group
= g_array_set_size(group
, num
+1);
919 g_array_index (group
, LttTracefile
, num
) = tmp_tf
;
929 /* ltt_get_facility_description
931 * Opens the file corresponding to the requested facility (identified by fac_id
934 * The name searched is : %trace root%/eventdefs/facname_checksum.xml
936 * Returns 0 on success, or 1 on failure.
939 static int ltt_get_facility_description(LttFacility
*f
,
941 LttTracefile
*fac_tf
)
943 char desc_file_name
[PATH_MAX
];
950 text
= g_quark_to_string(t
->pathname
);
951 textlen
= strlen(text
);
953 if(textlen
>= PATH_MAX
) goto name_error
;
954 strcpy(desc_file_name
, text
);
956 text
= "/eventdefs/";
957 textlen
+=strlen(text
);
958 if(textlen
>= PATH_MAX
) goto name_error
;
959 strcat(desc_file_name
, text
);
961 text
= g_quark_to_string(f
->name
);
962 fac_name_len
= strlen(text
);
963 textlen
+=fac_name_len
;
964 if(textlen
>= PATH_MAX
) goto name_error
;
965 strcat(desc_file_name
, text
);
967 /* arch specific facilities are named like this : name_arch */
968 if(fac_name_len
+1 < sizeof("_arch"))
971 if(!strcmp(&text
[fac_name_len
+1-sizeof("_arch")], "_arch"))
979 textlen
+=strlen(text
);
980 if(textlen
>= PATH_MAX
) goto name_error
;
981 strcat(desc_file_name
, text
);
983 err
= snprintf(desc_file_name
+textlen
, PATH_MAX
-textlen
-1,
985 if(err
< 0) goto name_error
;
987 textlen
=strlen(desc_file_name
);
992 switch(t
->arch_type
) {
993 case LTT_ARCH_TYPE_I386
:
996 case LTT_ARCH_TYPE_PPC
:
999 case LTT_ARCH_TYPE_SH
:
1002 case LTT_ARCH_TYPE_S390
:
1005 case LTT_ARCH_TYPE_MIPS
:
1008 case LTT_ARCH_TYPE_ARM
:
1011 case LTT_ARCH_TYPE_PPC64
:
1014 case LTT_ARCH_TYPE_X86_64
:
1017 case LTT_ARCH_TYPE_C2
:
1020 case LTT_ARCH_TYPE_POWERPC
:
1024 g_error("Trace from unsupported architecture.");
1026 textlen
+=strlen(text
);
1027 if(textlen
>= PATH_MAX
) goto name_error
;
1028 strcat(desc_file_name
, text
);
1032 textlen
+=strlen(text
);
1033 if(textlen
>= PATH_MAX
) goto name_error
;
1034 strcat(desc_file_name
, text
);
1036 err
= ltt_facility_open(f
, t
, desc_file_name
);
1037 if(err
) goto facility_error
;
1046 static void ltt_fac_ids_destroy(gpointer data
)
1048 GArray
*fac_ids
= (GArray
*)data
;
1050 g_array_free(fac_ids
, TRUE
);
1054 /* Presumes the tracefile is already seeked at the beginning. It makes sense,
1055 * because it must be done just after the opening */
1056 int ltt_process_facility_tracefile(LttTracefile
*tf
)
1065 err
= ltt_tracefile_read_seek(tf
);
1066 if(err
== EPERM
) goto seek_error
;
1067 else if(err
== ERANGE
) break; /* End of tracefile */
1069 err
= ltt_tracefile_read_update_event(tf
);
1070 if(err
) goto update_error
;
1072 /* We are on a facility load/or facility unload/ or heartbeat event */
1074 * * facility 0 is hardcoded : this is the core facility. It will be shown
1075 * in the facility array though, and is shown as "loaded builtin" in the
1077 * It contains event :
1079 * 1 : facility unload
1080 * 2 : state dump facility load
1083 if(tf
->event
.event_id
>= MARKER_CORE_IDS
) {
1084 /* Should only contain core facility */
1085 g_warning("Error in processing facility file %s, "
1086 "should not contain event id %u.", g_quark_to_string(tf
->name
),
1087 tf
->event
.event_id
);
1089 goto event_id_error
;
1093 const char *marker_name
, *format
;
1095 guint8 int_size
, long_size
, pointer_size
, size_t_size
, alignment
;
1098 switch((enum marker_id
)tf
->event
.event_id
) {
1099 case MARKER_ID_SET_MARKER_ID
:
1100 marker_name
= pos
= tf
->event
.data
;
1101 g_debug("Doing MARKER_ID_SET_MARKER_ID of marker %s", marker_name
);
1102 pos
+= strlen(marker_name
) + 1;
1103 //remove genevent compatibility
1104 //pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment);
1105 pos
+= ltt_align((size_t)pos
, sizeof(uint16_t), tf
->alignment
);
1106 id
= ltt_get_uint16(LTT_GET_BO(tf
), pos
);
1107 g_debug("In MARKER_ID_SET_MARKER_ID of marker %s id %hu",
1109 pos
+= sizeof(guint16
);
1110 int_size
= *(guint8
*)pos
;
1111 pos
+= sizeof(guint8
);
1112 long_size
= *(guint8
*)pos
;
1113 pos
+= sizeof(guint8
);
1114 pointer_size
= *(guint8
*)pos
;
1115 pos
+= sizeof(guint8
);
1116 size_t_size
= *(guint8
*)pos
;
1117 pos
+= sizeof(guint8
);
1118 alignment
= *(guint8
*)pos
;
1119 pos
+= sizeof(guint8
);
1120 marker_id_event(tf
->trace
, g_quark_from_string(marker_name
),
1121 id
, int_size
, long_size
,
1122 pointer_size
, size_t_size
, alignment
);
1124 case MARKER_ID_SET_MARKER_FORMAT
:
1125 marker_name
= pos
= tf
->event
.data
;
1126 g_debug("Doing MARKER_ID_SET_MARKER_FORMAT of marker %s",
1128 pos
+= strlen(marker_name
) + 1;
1130 //pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment);
1132 pos
+= strlen(format
) + 1;
1134 //pos += ltt_align((size_t)pos, tf->trace->arch_size, tf->alignment);
1135 marker_format_event(tf
->trace
, g_quark_from_string(marker_name
),
1137 /* get information from dictionnary TODO */
1139 case MARKER_ID_HEARTBEAT_32
:
1140 case MARKER_ID_HEARTBEAT_64
:
1143 g_warning("Error in processing facility file %s, "
1144 "unknown event id %hhu.",
1145 g_quark_to_string(tf
->name
),
1146 tf
->event
.event_id
);
1148 goto event_id_error
;
1154 /* Error handling */
1158 g_warning("An error occured in facility tracefile parsing");
1163 LttTrace
*ltt_trace_open(const gchar
*pathname
)
1165 gchar abs_path
[PATH_MAX
];
1170 struct ltt_block_start_header
*header
;
1172 struct dirent
*entry
;
1173 guint control_found
= 0;
1174 guint eventdefs_found
= 0;
1175 struct stat stat_buf
;
1176 gchar path
[PATH_MAX
];
1178 t
= g_new(LttTrace
, 1);
1179 if(!t
) goto alloc_error
;
1181 get_absolute_pathname(pathname
, abs_path
);
1182 t
->pathname
= g_quark_from_string(abs_path
);
1184 g_datalist_init(&t
->tracefiles
);
1186 /* Test to see if it looks like a trace */
1187 dir
= opendir(abs_path
);
1192 while((entry
= readdir(dir
)) != NULL
) {
1193 strcpy(path
, abs_path
);
1195 strcat(path
, entry
->d_name
);
1196 ret
= stat(path
, &stat_buf
);
1201 if(S_ISDIR(stat_buf
.st_mode
)) {
1202 if(strcmp(entry
->d_name
, "control") == 0) {
1205 if(strcmp(entry
->d_name
, "eventdefs") == 0) {
1206 eventdefs_found
= 1;
1212 if(!control_found
|| !eventdefs_found
) goto find_error
;
1214 /* Open all the tracefiles */
1215 if(open_tracefiles(t
, abs_path
, "")) {
1216 g_warning("Error opening tracefile %s", abs_path
);
1220 /* Parse each trace control/facilitiesN files : get runtime fac. info */
1221 group
= g_datalist_id_get_data(&t
->tracefiles
, LTT_TRACEFILE_NAME_FACILITIES
);
1223 g_error("Trace %s has no facility tracefile", abs_path
);
1225 goto facilities_error
;
1228 /* Get the trace information for the control/facility 0 tracefile */
1229 g_assert(group
->len
> 0);
1230 tf
= &g_array_index (group
, LttTracefile
, 0);
1231 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
1232 g_assert(parse_trace_header(header
->trace
,
1235 t
->num_cpu
= group
->len
;
1237 ret
= allocate_marker_data(t
);
1239 g_error("Error in allocating marker data");
1241 for(i
=0; i
<group
->len
; i
++) {
1242 tf
= &g_array_index (group
, LttTracefile
, i
);
1243 if(ltt_process_facility_tracefile(tf
))
1244 goto facilities_error
;
1249 /* Error handling */
1251 destroy_marker_data(t
);
1253 g_datalist_clear(&t
->tracefiles
);
1261 GQuark
ltt_trace_name(const LttTrace
*t
)
1267 /******************************************************************************
1268 * When we copy a trace, we want all the opening actions to happen again :
1269 * the trace will be reopened and totally independant from the original.
1270 * That's why we call ltt_trace_open.
1271 *****************************************************************************/
1272 LttTrace
*ltt_trace_copy(LttTrace
*self
)
1274 return ltt_trace_open(g_quark_to_string(self
->pathname
));
1277 void ltt_trace_close(LttTrace
*t
)
1279 g_datalist_clear(&t
->tracefiles
);
1284 /*****************************************************************************
1285 *Get the system description of the trace
1286 ****************************************************************************/
1288 LttFacility
*ltt_trace_facility_by_id(LttTrace
*t
, guint8 id
)
1290 g_assert(id
< t
->facilities_by_num
->len
);
1291 return &g_array_index(t
->facilities_by_num
, LttFacility
, id
);
1294 /* ltt_trace_facility_get_by_name
1296 * Returns the GArray of facility indexes. All the fac_ids that matches the
1297 * requested facility name.
1299 * If name is not found, returns NULL.
1301 GArray
*ltt_trace_facility_get_by_name(LttTrace
*t
, GQuark name
)
1303 return g_datalist_id_get_data(&t
->facilities_by_name
, name
);
1307 /*****************************************************************************
1308 * Functions to discover all the event types in the trace
1309 ****************************************************************************/
1312 unsigned ltt_trace_eventtype_number(LttTrace
*t
)
1316 unsigned int num
= t
->facility_number
;
1320 f
= (LttFacility
*)g_ptr_array_index(t
->facilities
, i
);
1321 count
+= f
->event_number
;
1328 //use an iteration on all the trace facilities, and inside iteration on all the
1329 //event types in each facilities instead.
1330 LttEventType
*ltt_trace_eventtype_get(LttTrace
*t
, unsigned evId
)
1332 LttEventType
*event_type
;
1335 f
= ltt_trace_facility_by_id(t
,evId
);
1337 if(unlikely(!f
)) event_type
= NULL
;
1338 else event_type
= f
->events
[evId
- f
->base_id
];
1345 /*****************************************************************************
1346 * ltt_trace_find_tracefile
1348 * Find a tracefile by name and index in the group.
1350 * Returns a pointer to the tracefiles, else NULL.
1351 ****************************************************************************/
1353 LttTracefile
*ltt_trace_find_tracefile(LttTrace
*t
, const gchar
*name
)
1358 /*****************************************************************************
1359 * Get the start time and end time of the trace
1360 ****************************************************************************/
1362 void ltt_tracefile_time_span_get(LttTracefile
*tf
,
1363 LttTime
*start
, LttTime
*end
)
1367 err
= map_block(tf
, 0);
1369 g_error("Can not map block");
1370 *start
= ltt_time_infinite
;
1372 *start
= tf
->buffer
.begin
.timestamp
;
1374 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1376 g_error("Can not map block");
1377 *end
= ltt_time_zero
;
1379 *end
= tf
->buffer
.end
.timestamp
;
1382 struct tracefile_time_span_get_args
{
1388 void group_time_span_get(GQuark name
, gpointer data
, gpointer user_data
)
1390 struct tracefile_time_span_get_args
*args
=
1391 (struct tracefile_time_span_get_args
*)user_data
;
1393 GArray
*group
= (GArray
*)data
;
1399 for(i
=0; i
<group
->len
; i
++) {
1400 tf
= &g_array_index (group
, LttTracefile
, i
);
1401 if(tf
->cpu_online
) {
1402 ltt_tracefile_time_span_get(tf
, &tmp_start
, &tmp_end
);
1403 if(ltt_time_compare(*args
->start
, tmp_start
)>0) *args
->start
= tmp_start
;
1404 if(ltt_time_compare(*args
->end
, tmp_end
)<0) *args
->end
= tmp_end
;
1409 void ltt_trace_time_span_get(LttTrace
*t
, LttTime
*start
, LttTime
*end
)
1411 LttTime min_start
= ltt_time_infinite
;
1412 LttTime max_end
= ltt_time_zero
;
1413 struct tracefile_time_span_get_args args
= { t
, &min_start
, &max_end
};
1415 g_datalist_foreach(&t
->tracefiles
, &group_time_span_get
, &args
);
1417 if(start
!= NULL
) *start
= min_start
;
1418 if(end
!= NULL
) *end
= max_end
;
1423 /*****************************************************************************
1424 *Get the name of a tracefile
1425 ****************************************************************************/
1427 GQuark
ltt_tracefile_name(const LttTracefile
*tf
)
1432 GQuark
ltt_tracefile_long_name(const LttTracefile
*tf
)
1434 return tf
->long_name
;
1439 guint
ltt_tracefile_cpu(LttTracefile
*tf
)
1444 guint
ltt_tracefile_tid(LttTracefile
*tf
)
1449 guint
ltt_tracefile_pgid(LttTracefile
*tf
)
1454 guint64
ltt_tracefile_creation(LttTracefile
*tf
)
1456 return tf
->creation
;
1458 /*****************************************************************************
1459 * Get the number of blocks in the tracefile
1460 ****************************************************************************/
1462 guint
ltt_tracefile_block_number(LttTracefile
*tf
)
1464 return tf
->num_blocks
;
1468 /* Seek to the first event in a tracefile that has a time equal or greater than
1469 * the time passed in parameter.
1471 * If the time parameter is outside the tracefile time span, seek to the first
1472 * event or if after, return ERANGE.
1474 * If the time parameter is before the first event, we have to seek specially to
1477 * If the time is after the end of the trace, return ERANGE.
1479 * Do a binary search to find the right block, then a sequential search in the
1480 * block to find the event.
1482 * In the special case where the time requested fits inside a block that has no
1483 * event corresponding to the requested time, the first event of the next block
1486 * IMPORTANT NOTE : // FIXME everywhere...
1488 * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time :
1489 * you will jump over an event if you do.
1491 * Return value : 0 : no error, the tf->event can be used
1492 * ERANGE : time if after the last event of the trace
1493 * otherwise : this is an error.
1497 int ltt_tracefile_seek_time(LttTracefile
*tf
, LttTime time
)
1501 unsigned int block_num
, high
, low
;
1503 /* seek at the beginning of trace */
1504 err
= map_block(tf
, 0); /* First block */
1506 g_error("Can not map block");
1510 /* If the time is lower or equal the beginning of the trace,
1511 * go to the first event. */
1512 if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) <= 0) {
1513 ret
= ltt_tracefile_read(tf
);
1514 if(ret
== ERANGE
) goto range
;
1515 else if (ret
) goto fail
;
1516 goto found
; /* There is either no event in the trace or the event points
1517 to the first event in the trace */
1520 err
= map_block(tf
, tf
->num_blocks
- 1); /* Last block */
1522 g_error("Can not map block");
1526 /* If the time is after the end of the trace, return ERANGE. */
1527 if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) > 0) {
1531 /* Binary search the block */
1532 high
= tf
->num_blocks
- 1;
1536 block_num
= ((high
-low
) / 2) + low
;
1538 err
= map_block(tf
, block_num
);
1540 g_error("Can not map block");
1544 /* We cannot divide anymore : this is what would happen if the time
1545 * requested was exactly between two consecutive buffers'end and start
1546 * timestamps. This is also what would happend if we didn't deal with out
1547 * of span cases prior in this function. */
1548 /* The event is right in the buffer!
1549 * (or in the next buffer first event) */
1551 ret
= ltt_tracefile_read(tf
);
1552 if(ret
== ERANGE
) goto range
; /* ERANGE or EPERM */
1553 else if(ret
) goto fail
;
1555 if(ltt_time_compare(time
, tf
->event
.event_time
) <= 0)
1559 } else if(ltt_time_compare(time
, tf
->buffer
.begin
.timestamp
) < 0) {
1560 /* go to lower part */
1561 high
= block_num
- 1;
1562 } else if(ltt_time_compare(time
, tf
->buffer
.end
.timestamp
) > 0) {
1563 /* go to higher part */
1564 low
= block_num
+ 1;
1565 } else {/* The event is right in the buffer!
1566 (or in the next buffer first event) */
1568 ret
= ltt_tracefile_read(tf
);
1569 if(ret
== ERANGE
) goto range
; /* ERANGE or EPERM */
1570 else if(ret
) goto fail
;
1572 if(ltt_time_compare(time
, tf
->event
.event_time
) <= 0)
1584 /* Error handling */
1586 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1587 g_quark_to_string(tf
->name
));
1592 int ltt_tracefile_seek_position(LttTracefile
*tf
, const LttEventPosition
*ep
) {
1596 if(ep
->tracefile
!= tf
) {
1600 err
= map_block(tf
, ep
->block
);
1602 g_error("Can not map block");
1606 tf
->event
.offset
= ep
->offset
;
1608 /* Put back the event real tsc */
1609 tf
->event
.tsc
= ep
->tsc
;
1610 tf
->buffer
.tsc
= ep
->tsc
;
1612 err
= ltt_tracefile_read_update_event(tf
);
1614 err
= ltt_tracefile_read_op(tf
);
1620 g_error("ltt_tracefile_seek_time failed on tracefile %s",
1621 g_quark_to_string(tf
->name
));
1625 LttTime
ltt_interpolate_time_from_tsc(LttTracefile
*tf
, guint64 tsc
)
1629 if(tsc
> tf
->trace
->start_tsc
) {
1630 time
= ltt_time_from_uint64(
1631 (double)(tsc
- tf
->trace
->start_tsc
)
1632 * (1000000000.0 / tf
->trace
->freq_scale
)
1633 / (double)tf
->trace
->start_freq
);
1634 time
= ltt_time_add(tf
->trace
->start_time_from_tsc
, time
);
1636 time
= ltt_time_from_uint64(
1637 (double)(tf
->trace
->start_tsc
- tsc
)
1638 * (1000000000.0 / tf
->trace
->freq_scale
)
1639 / (double)tf
->trace
->start_freq
);
1640 time
= ltt_time_sub(tf
->trace
->start_time_from_tsc
, time
);
1645 /* Calculate the real event time based on the buffer boundaries */
1646 LttTime
ltt_interpolate_time(LttTracefile
*tf
, LttEvent
*event
)
1648 return ltt_interpolate_time_from_tsc(tf
, tf
->buffer
.tsc
);
1652 /* Get the current event of the tracefile : valid until the next read */
1653 LttEvent
*ltt_tracefile_get_event(LttTracefile
*tf
)
1660 /*****************************************************************************
1662 * ltt_tracefile_read : Read the next event in the tracefile
1667 * Returns 0 if an event can be used in tf->event.
1668 * Returns ERANGE on end of trace. The event in tf->event still can be used
1669 * (if the last block was not empty).
1670 * Returns EPERM on error.
1672 * This function does make the tracefile event structure point to the event
1673 * currently pointed to by the tf->event.
1675 * Note : you must call a ltt_tracefile_seek to the beginning of the trace to
1676 * reinitialize it after an error if you want results to be coherent.
1677 * It would be the case if a end of trace last buffer has no event : the end
1678 * of trace wouldn't be returned, but an error.
1679 * We make the assumption there is at least one event per buffer.
1680 ****************************************************************************/
1682 int ltt_tracefile_read(LttTracefile
*tf
)
1686 err
= ltt_tracefile_read_seek(tf
);
1688 err
= ltt_tracefile_read_update_event(tf
);
1690 err
= ltt_tracefile_read_op(tf
);
1696 int ltt_tracefile_read_seek(LttTracefile
*tf
)
1700 /* Get next buffer until we finally have an event, or end of trace */
1702 err
= ltt_seek_next_event(tf
);
1703 if(unlikely(err
== ENOPROTOOPT
)) {
1707 /* Are we at the end of the buffer ? */
1709 if(unlikely(tf
->buffer
.index
== tf
->num_blocks
-1)){ /* end of trace ? */
1712 /* get next block */
1713 err
= map_block(tf
, tf
->buffer
.index
+ 1);
1715 g_error("Can not map block");
1719 } else break; /* We found an event ! */
1726 /* do specific operation on events */
1727 int ltt_tracefile_read_op(LttTracefile
*tf
)
1733 /* do event specific operation */
1735 /* do something if its an heartbeat event : increment the heartbeat count */
1736 //if(event->facility_id == LTT_FACILITY_CORE)
1737 // if(event->event_id == LTT_EVENT_HEARTBEAT)
1738 // tf->cur_heart_beat_number++;
1744 /* same as ltt_tracefile_read, but does not seek to the next event nor call
1745 * event specific operation. */
1746 int ltt_tracefile_read_update_event(LttTracefile
*tf
)
1752 pos
= tf
->buffer
.head
+ event
->offset
;
1754 /* Read event header */
1756 /* Align the head */
1758 pos
+= ltt_align((size_t)pos
, tf
->trace
->arch_size
, tf
->alignment
);
1760 g_assert(tf
->has_heartbeat
);
1761 pos
+= ltt_align((size_t)pos
, sizeof(uint32_t), tf
->alignment
);
1764 if(tf
->has_heartbeat
) {
1765 event
->timestamp
= ltt_get_uint32(LTT_GET_BO(tf
),
1768 /* 32 bits -> 64 bits tsc */
1769 /* note : still works for seek and non seek cases. */
1770 if(event
->timestamp
< (0xFFFFFFFFULL
&tf
->buffer
.tsc
)) {
1771 tf
->buffer
.tsc
= ((tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1773 | (guint64
)event
->timestamp
;
1774 event
->tsc
= tf
->buffer
.tsc
;
1777 tf
->buffer
.tsc
= (tf
->buffer
.tsc
&0xFFFFFFFF00000000ULL
)
1778 | (guint64
)event
->timestamp
;
1779 event
->tsc
= tf
->buffer
.tsc
;
1780 event
->compact_data
= 0;
1783 /* Compact header */
1784 /* We keep the LSB of the previous timestamp, to make sure
1785 * we never go back */
1786 event
->event_id
= event
->timestamp
>> tf
->tscbits
;
1787 event
->event_id
= event
->event_id
& ((1 << tf
->trace
->compact_event_bits
) - 1);
1788 event
->compact_data
= event
->timestamp
>>
1789 (tf
->trace
->compact_event_bits
+ tf
->tscbits
);
1790 //printf("tsc bits %u, ev bits %u init data %u\n",
1791 // tf->tscbits, tf->trace->compact_event_bits, event->compact_data);
1792 /* Put the compact data back in original endianness */
1793 event
->compact_data
= ltt_get_uint32(LTT_GET_BO(tf
), &event
->compact_data
);
1794 event
->event_size
= 0xFFFF;
1795 //printf("Found compact event %d\n", event->event_id);
1796 //printf("Compact data %d\n", event->compact_data);
1797 event
->timestamp
= event
->timestamp
<< tf
->tsc_lsb_truncate
;
1798 event
->timestamp
= event
->timestamp
& tf
->tsc_mask
;
1799 //printf("timestamp 0x%lX\n", event->timestamp);
1800 //printf("mask 0x%llX\n", tf->tsc_mask);
1801 //printf("mask_next 0x%llX\n", tf->tsc_mask_next_bit);
1802 //printf("previous tsc 0x%llX\n", tf->buffer.tsc);
1803 //printf("previous tsc&mask 0x%llX\n", tf->tsc_mask&tf->buffer.tsc);
1804 //printf("previous tsc&(~mask) 0x%llX\n", tf->buffer.tsc&(~tf->tsc_mask));
1805 if(event
->timestamp
< (tf
->tsc_mask
&tf
->buffer
.tsc
)) {
1807 tf
->buffer
.tsc
= ((tf
->buffer
.tsc
&(~tf
->tsc_mask
))
1808 + tf
->tsc_mask_next_bit
)
1809 | (guint64
)event
->timestamp
;
1810 event
->tsc
= tf
->buffer
.tsc
;
1812 //printf("no wrap\n");
1814 tf
->buffer
.tsc
= (tf
->buffer
.tsc
&(~tf
->tsc_mask
))
1815 | (guint64
)event
->timestamp
;
1816 event
->tsc
= tf
->buffer
.tsc
;
1818 //printf("current tsc 0x%llX\n", tf->buffer.tsc);
1820 pos
+= sizeof(guint32
);
1822 event
->tsc
= ltt_get_uint64(LTT_GET_BO(tf
), pos
);
1823 tf
->buffer
.tsc
= event
->tsc
;
1824 event
->compact_data
= 0;
1825 pos
+= sizeof(guint64
);
1827 event
->event_time
= ltt_interpolate_time(tf
, event
);
1830 event
->event_id
= *(guint16
*)pos
;
1831 pos
+= sizeof(guint16
);
1833 event
->event_size
= ltt_get_uint16(LTT_GET_BO(tf
), pos
);
1834 pos
+= sizeof(guint16
);
1838 /* Align the head */
1840 pos
+= ltt_align((size_t)pos
, tf
->trace
->arch_size
, tf
->alignment
);
1844 /* get the data size and update the event fields with the current
1845 * information. Also update the time if a heartbeat_full event is found. */
1846 ltt_update_event_size(tf
);
1852 /****************************************************************************
1854 * map_block : map a block from the file
1856 * lttdes : ltt trace file
1857 * whichBlock : the block which will be read
1860 * EINVAL : lseek fail
1861 * EIO : can not read from the file
1862 ****************************************************************************/
1864 gint
map_block(LttTracefile
* tf
, guint block_num
)
1866 int page_size
= getpagesize();
1867 struct ltt_block_start_header
*header
;
1869 g_assert(block_num
< tf
->num_blocks
);
1871 if(tf
->buffer
.head
!= NULL
) {
1872 if(munmap(tf
->buffer
.head
, PAGE_ALIGN(tf
->buf_size
))) {
1873 g_warning("unmap size : %u\n",
1874 PAGE_ALIGN(tf
->buf_size
));
1875 perror("munmap error");
1881 /* Multiple of pages aligned head */
1882 tf
->buffer
.head
= mmap(0,
1883 PAGE_ALIGN(tf
->buf_size
),
1884 PROT_READ
, MAP_PRIVATE
, tf
->fd
,
1885 PAGE_ALIGN((off_t
)tf
->buf_size
* (off_t
)block_num
));
1887 if(tf
->buffer
.head
== MAP_FAILED
) {
1888 perror("Error in allocating memory for buffer of tracefile");
1892 g_assert( ( (guint
)tf
->buffer
.head
&(8-1) ) == 0); // make sure it's aligned.
1895 tf
->buffer
.index
= block_num
;
1897 header
= (struct ltt_block_start_header
*)tf
->buffer
.head
;
1900 tf
->buffer
.begin
.timestamp
= ltt_time_add(
1901 ltt_time_from_uint64(
1902 ltt_get_uint64(LTT_GET_BO(tf
),
1903 &header
->begin
.timestamp
)
1904 - tf
->trace
->start_monotonic
),
1905 tf
->trace
->start_time
);
1907 //g_debug("block %u begin : %lu.%lu", block_num,
1908 // tf->buffer.begin.timestamp.tv_sec, tf->buffer.begin.timestamp.tv_nsec);
1909 tf
->buffer
.begin
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1910 &header
->begin
.cycle_count
);
1911 tf
->buffer
.begin
.freq
= ltt_get_uint64(LTT_GET_BO(tf
),
1912 &header
->begin
.freq
);
1913 if(tf
->buffer
.begin
.freq
== 0)
1914 tf
->buffer
.begin
.freq
= tf
->trace
->start_freq
;
1916 tf
->buffer
.begin
.timestamp
= ltt_interpolate_time_from_tsc(tf
,
1917 tf
->buffer
.begin
.cycle_count
);
1920 ltt_time_from_uint64(
1921 (double)(tf
->buffer
.begin
.cycle_count
1922 - tf
->trace
->start_tsc
) * 1000000.0
1923 / (double)tf
->trace
->start_freq
),
1924 tf
->trace
->start_time_from_tsc
);
1928 tf
->buffer
.end
.timestamp
= ltt_time_add(
1929 ltt_time_from_uint64(
1930 ltt_get_uint64(LTT_GET_BO(tf
),
1931 &header
->end
.timestamp
)
1932 - tf
->trace
->start_monotonic
),
1933 tf
->trace
->start_time
);
1935 //g_debug("block %u end : %lu.%lu", block_num,
1936 // tf->buffer.end.timestamp.tv_sec, tf->buffer.end.timestamp.tv_nsec);
1937 tf
->buffer
.end
.cycle_count
= ltt_get_uint64(LTT_GET_BO(tf
),
1938 &header
->end
.cycle_count
);
1939 tf
->buffer
.end
.freq
= ltt_get_uint64(LTT_GET_BO(tf
),
1941 if(tf
->buffer
.end
.freq
== 0)
1942 tf
->buffer
.end
.freq
= tf
->trace
->start_freq
;
1944 tf
->buffer
.lost_size
= ltt_get_uint32(LTT_GET_BO(tf
),
1945 &header
->lost_size
);
1946 tf
->buffer
.end
.timestamp
= ltt_interpolate_time_from_tsc(tf
,
1947 tf
->buffer
.end
.cycle_count
);
1950 ltt_time_from_uint64(
1951 (double)(tf
->buffer
.end
.cycle_count
1952 - tf
->trace
->start_tsc
) * 1000000.0
1953 / (double)tf
->trace
->start_freq
),
1954 tf
->trace
->start_time_from_tsc
);
1956 tf
->buffer
.tsc
= tf
->buffer
.begin
.cycle_count
;
1957 tf
->event
.tsc
= tf
->buffer
.tsc
;
1958 tf
->buffer
.freq
= tf
->buffer
.begin
.freq
;
1961 * eventually support variable buffer size : will need a partial pre-read of
1962 * the headers to create an index when we open the trace... eventually. */
1963 g_assert(tf
->buf_size
== ltt_get_uint32(LTT_GET_BO(tf
),
1964 &header
->buf_size
));
1966 /* Now that the buffer is mapped, calculate the time interpolation for the
1969 // tf->buffer.nsecs_per_cycle = calc_nsecs_per_cycle(tf);
1970 //tf->buffer.cyc2ns_scale = calc_nsecs_per_cycle(tf);
1972 /* Make the current event point to the beginning of the buffer :
1973 * it means that the event read must get the first event. */
1974 tf
->event
.tracefile
= tf
;
1975 tf
->event
.block
= block_num
;
1976 tf
->event
.offset
= 0;
1985 /* It will update the fields offsets too */
1986 void ltt_update_event_size(LttTracefile
*tf
)
1990 struct marker_info
*info
;
1992 switch((enum marker_id
)tf
->event
.event_id
) {
1993 case MARKER_ID_SET_MARKER_ID
:
1994 size
= strlen((char*)tf
->event
.data
) + 1;
1995 g_debug("marker %s id set", (char*)tf
->event
.data
);
1996 size
+= ltt_align(size
, sizeof(guint16
), tf
->alignment
);
1997 size
+= sizeof(guint16
);
1998 size
+= sizeof(guint8
);
1999 size
+= sizeof(guint8
);
2000 size
+= sizeof(guint8
);
2001 size
+= sizeof(guint8
);
2002 size
+= sizeof(guint8
);
2004 case MARKER_ID_SET_MARKER_FORMAT
:
2005 g_debug("marker %s format set", (char*)tf
->event
.data
);
2006 size
= strlen((char*)tf
->event
.data
) + 1;
2007 size
+= strlen((char*)tf
->event
.data
+ size
) + 1;
2009 case MARKER_ID_HEARTBEAT_32
:
2010 g_debug("Update Event heartbeat 32 bits");
2012 case MARKER_ID_HEARTBEAT_64
:
2013 g_debug("Update Event heartbeat 64 bits");
2014 tscdata
= (char*)(tf
->event
.data
);
2015 tf
->event
.tsc
= ltt_get_uint64(LTT_GET_BO(tf
), tscdata
);
2016 tf
->buffer
.tsc
= tf
->event
.tsc
;
2017 tf
->event
.event_time
= ltt_interpolate_time(tf
, &tf
->event
);
2018 size
= ltt_align(size
, sizeof(guint64
), tf
->alignment
);
2019 size
+= sizeof(guint64
);
2023 info
= marker_get_info_from_id(tf
->trace
, tf
->event
.event_id
);
2024 if (tf
->event
.event_id
>= MARKER_CORE_IDS
)
2025 g_assert(info
!= NULL
);
2027 /* Do not update field offsets of core markers when initially reading the
2028 * facility tracefile when the infos about these markers do not exist yet.
2030 if (likely(info
&& info
->fields
)) {
2031 if (info
->size
!= -1)
2034 size
= marker_update_fields_offsets(marker_get_info_from_id(tf
->trace
,
2035 tf
->event
.event_id
), tf
->event
.data
);
2038 tf
->event
.data_size
= size
;
2040 /* Check consistency between kernel and LTTV structure sizes */
2041 if(tf
->event
.event_size
== 0xFFFF) {
2042 /* Event size too big to fit in the event size field */
2043 tf
->event
.event_size
= tf
->event
.data_size
;
2045 if (tf
->event
.data_size
!= tf
->event
.event_size
) {
2046 struct marker_info
*info
= marker_get_info_from_id(tf
->trace
,
2047 tf
->event
.event_id
);
2048 g_error("Kernel/LTTV event size differs for event %s: kernel %u, LTTV %u",
2049 g_quark_to_string(info
->name
),
2050 tf
->event
.event_size
, tf
->event
.data_size
);
2055 LttEventType
*event_type
=
2056 ltt_facility_eventtype_get(f
, tf
->event
.event_id
);
2059 g_warning("Unknown event id %hhu in facility %s in tracefile %s",
2061 g_quark_to_string(f
->name
),
2062 g_quark_to_string(tf
->name
));
2063 goto event_type_error
;
2066 /* Compute the dynamic offsets */
2067 compute_offsets(tf
, f
, event_type
, &size
, tf
->event
.data
);
2069 //g_debug("Event root field : f.e %hhu.%hhu size %zd",
2070 // tf->event.facility_id,
2071 // tf->event.event_id, size);
2074 tf
->event
.data_size
= size
;
2076 /* Check consistency between kernel and LTTV structure sizes */
2077 if(tf
->event
.event_size
== 0xFFFF) {
2078 /* Event size too big to fit in the event size field */
2079 tf
->event
.event_size
= tf
->event
.data_size
;
2081 if (tf
->event
.data_size
!= tf
->event
.event_size
) {
2082 g_error("Kernel/LTTV event size differs for event %s.%s: kernel %u, LTTV %u",
2083 g_quark_to_string(f
->name
), g_quark_to_string(event_type
->name
),
2084 tf
->event
.event_size
, tf
->event
.data_size
);
2087 //g_assert(tf->event.data_size == tf->event.event_size);
2093 if(tf
->event
.event_size
== 0xFFFF) {
2094 g_error("Cannot jump over an unknown event bigger than 0xFFFE bytes");
2096 /* The facility is unknown : use the kernel information about this event
2097 * to jump over it. */
2098 tf
->event
.data_size
= tf
->event
.event_size
;
2103 /* Take the tf current event offset and use the event facility id and event id
2104 * to figure out where is the next event offset.
2106 * This is an internal function not aiming at being used elsewhere : it will
2107 * not jump over the current block limits. Please consider using
2108 * ltt_tracefile_read to do this.
2110 * Returns 0 on success
2111 * ERANGE if we are at the end of the buffer.
2112 * ENOPROTOOPT if an error occured when getting the current event size.
2114 int ltt_seek_next_event(LttTracefile
*tf
)
2119 /* seek over the buffer header if we are at the buffer start */
2120 if(tf
->event
.offset
== 0) {
2121 tf
->event
.offset
+= tf
->buffer_header_size
;
2123 if(tf
->event
.offset
== tf
->buf_size
- tf
->buffer
.lost_size
) {
2130 pos
= tf
->event
.data
;
2132 if(tf
->event
.data_size
< 0) goto error
;
2134 pos
+= (size_t)tf
->event
.data_size
;
2136 tf
->event
.offset
= pos
- tf
->buffer
.head
;
2138 if(tf
->event
.offset
== tf
->buf_size
- tf
->buffer
.lost_size
) {
2142 g_assert(tf
->event
.offset
< tf
->buf_size
- tf
->buffer
.lost_size
);
2148 g_error("Error in ltt_seek_next_event for tracefile %s",
2149 g_quark_to_string(tf
->name
));
2154 /*****************************************************************************
2156 * calc_nsecs_per_cycle : calculate nsecs per cycle for current block
2158 * 1.0 / (freq(khz) *1000) * 1000000000
2161 ****************************************************************************/
2162 /* from timer_tsc.c */
2163 #define CYC2NS_SCALE_FACTOR 10
2164 static guint32
calc_nsecs_per_cycle(LttTracefile
* tf
)
2166 //return 1e6 / (double)tf->buffer.freq;
2167 guint32 cpu_mhz
= tf
->buffer
.freq
/ 1000;
2168 guint32 cyc2ns_scale
= (1000 << CYC2NS_SCALE_FACTOR
)/cpu_mhz
;
2170 return cyc2ns_scale
;
2171 // return 1e6 / (double)tf->buffer.freq;
2174 static guint64
cycles_2_ns(LttTracefile
*tf
, guint64 cycles
)
2176 return (cycles
* tf
->buffer
.cyc2ns_scale
) >> CYC2NS_SCALE_FACTOR
;
2181 void setFieldsOffset(LttTracefile
*tf
, LttEventType
*evT
,void *evD
)
2183 LttField
* rootFld
= evT
->root_field
;
2184 // rootFld->base_address = evD;
2187 rootFld
->field_size
= getFieldtypeSize(tf
, evT
->facility
,
2188 evT
, 0,0,rootFld
, evD
);
2192 /*****************************************************************************
2194 * set_fields_offsets : set the precomputable offset of the fields
2196 * tracefile : opened trace file
2197 * event_type : the event type
2198 ****************************************************************************/
2200 void set_fields_offsets(LttTracefile
*tf
, LttEventType
*event_type
)
2202 LttField
*field
= event_type
->root_field
;
2203 enum field_status fixed_root
= FIELD_FIXED
, fixed_parent
= FIELD_FIXED
;
2206 preset_field_type_size(tf
, event_type
, 0, 0,
2207 &fixed_root
, &fixed_parent
,
2214 /*****************************************************************************
2216 * get_alignment : Get the alignment needed for a field.
2220 * returns : The size on which it must be aligned.
2222 ****************************************************************************/
2224 off_t
get_alignment(LttField
*field
)
2226 LttType
*type
= &field
->field_type
;
2228 switch(type
->type_class
) {
2230 case LTT_UINT_FIXED
:
2245 /* Align offset on type size */
2246 g_assert(field
->field_size
!= 0);
2247 return field
->field_size
;
2253 g_assert(type
->fields
->len
== 1);
2255 LttField
*child
= &g_array_index(type
->fields
, LttField
, 0);
2256 return get_alignment(child
);
2260 g_assert(type
->fields
->len
== 2);
2263 LttField
*child
= &g_array_index(type
->fields
, LttField
, 0);
2265 localign
= max(localign
, get_alignment(child
));
2267 child
= &g_array_index(type
->fields
, LttField
, 1);
2268 localign
= max(localign
, get_alignment(child
));
2279 for(i
=0; i
<type
->fields
->len
; i
++) {
2280 LttField
*child
= &g_array_index(type
->fields
, LttField
, i
);
2281 localign
= max(localign
, get_alignment(child
));
2288 g_error("get_alignment : unknown type");
2295 /*****************************************************************************
2297 * field_compute_static_size : Determine the size of fields known by their
2298 * sole definition. Unions, arrays and struct sizes might be known, but
2299 * the parser does not give that information.
2304 ****************************************************************************/
2306 void field_compute_static_size(LttFacility
*fac
, LttField
*field
)
2308 LttType
*type
= &field
->field_type
;
2310 switch(type
->type_class
) {
2312 case LTT_UINT_FIXED
:
2331 /* note this : array type size is the number of elements in the array,
2332 * while array field size of the length of the array in bytes */
2333 g_assert(type
->fields
->len
== 1);
2335 LttField
*child
= &g_array_index(type
->fields
, LttField
, 0);
2336 field_compute_static_size(fac
, child
);
2338 if(child
->field_size
!= 0) {
2339 field
->field_size
= type
->size
* child
->field_size
;
2340 field
->dynamic_offsets
= g_array_sized_new(FALSE
, TRUE
,
2341 sizeof(off_t
), type
->size
);
2343 field
->field_size
= 0;
2348 g_assert(type
->fields
->len
== 2);
2350 off_t local_offset
= 0;
2351 LttField
*child
= &g_array_index(type
->fields
, LttField
, 1);
2352 field_compute_static_size(fac
, child
);
2353 field
->field_size
= 0;
2355 if(child
->field_size
!= 0) {
2356 field
->dynamic_offsets
= g_array_sized_new(FALSE
, TRUE
,
2357 sizeof(off_t
), SEQUENCE_AVG_ELEMENTS
);
2365 for(i
=0;i
<type
->fields
->len
;i
++) {
2366 LttField
*child
= &g_array_index(type
->fields
, LttField
, i
);
2367 field_compute_static_size(fac
, child
);
2368 if(child
->field_size
!= 0) {
2369 type
->size
+= ltt_align(type
->size
, get_alignment(child
),
2371 type
->size
+= child
->field_size
;
2373 /* As soon as we find a child with variable size, we have
2374 * a variable size */
2379 field
->field_size
= type
->size
;
2383 g_error("field_static_size : unknown type");
2390 /*****************************************************************************
2392 * precompute_fields_offsets : set the precomputable offset of the fields
2396 * offset : pointer to the current offset, must be incremented
2398 * return : 1 : found a variable length field, stop the processing.
2400 ****************************************************************************/
2403 gint
precompute_fields_offsets(LttFacility
*fac
, LttField
*field
, off_t
*offset
, gint is_compact
)
2405 LttType
*type
= &field
->field_type
;
2407 if(unlikely(is_compact
)) {
2408 g_assert(field
->field_size
!= 0);
2409 /* FIXME THIS IS A HUUUUUGE hack :
2410 * offset is between the compact_data field in struct LttEvent
2411 * and the address of the field root in the memory map.
2412 * ark. Both will stay at the same addresses while the event
2413 * is readable, so it's ok.
2415 field
->offset_root
= 0;
2416 field
->fixed_root
= FIELD_FIXED
;
2420 switch(type
->type_class
) {
2422 case LTT_UINT_FIXED
:
2437 g_assert(field
->field_size
!= 0);
2438 /* Align offset on type size */
2439 *offset
+= ltt_align(*offset
, get_alignment(field
),
2441 /* remember offset */
2442 field
->offset_root
= *offset
;
2443 field
->fixed_root
= FIELD_FIXED
;
2444 /* Increment offset */
2445 *offset
+= field
->field_size
;
2449 field
->offset_root
= *offset
;
2450 field
->fixed_root
= FIELD_FIXED
;
2454 g_assert(type
->fields
->len
== 1);
2456 LttField
*child
= &g_array_index(type
->fields
, LttField
, 0);
2458 *offset
+= ltt_align(*offset
, get_alignment(field
),
2461 /* remember offset */
2462 field
->offset_root
= *offset
;
2463 field
->array_offset
= *offset
;
2464 field
->fixed_root
= FIELD_FIXED
;
2466 /* Let the child be variable */
2467 //precompute_fields_offsets(tf, child, offset);
2469 if(field
->field_size
!= 0) {
2470 /* Increment offset */
2471 /* field_size is the array size in bytes */
2472 *offset
+= field
->field_size
;
2480 g_assert(type
->fields
->len
== 2);
2485 *offset
+= ltt_align(*offset
, get_alignment(field
),
2488 /* remember offset */
2489 field
->offset_root
= *offset
;
2490 field
->fixed_root
= FIELD_FIXED
;
2492 child
= &g_array_index(type
->fields
, LttField
, 0);
2493 ret
= precompute_fields_offsets(fac
, child
, offset
, is_compact
);
2494 g_assert(ret
== 0); /* Seq len cannot have variable len */
2496 child
= &g_array_index(type
->fields
, LttField
, 1);
2497 *offset
+= ltt_align(*offset
, get_alignment(child
),
2499 field
->array_offset
= *offset
;
2500 /* Let the child be variable. */
2501 //ret = precompute_fields_offsets(fac, child, offset);
2503 /* Cannot precompute fields offsets of sequence members, and has
2504 * variable length. */
2514 *offset
+= ltt_align(*offset
, get_alignment(field
),
2516 /* remember offset */
2517 field
->offset_root
= *offset
;
2518 field
->fixed_root
= FIELD_FIXED
;
2520 for(i
=0; i
< type
->fields
->len
; i
++) {
2521 child
= &g_array_index(type
->fields
, LttField
, i
);
2522 ret
= precompute_fields_offsets(fac
, child
, offset
, is_compact
);
2535 *offset
+= ltt_align(*offset
, get_alignment(field
),
2537 /* remember offset */
2538 field
->offset_root
= *offset
;
2539 field
->fixed_root
= FIELD_FIXED
;
2541 for(i
=0; i
< type
->fields
->len
; i
++) {
2542 *offset
= field
->offset_root
;
2543 child
= &g_array_index(type
->fields
, LttField
, i
);
2544 ret
= precompute_fields_offsets(fac
, child
, offset
, is_compact
);
2548 *offset
= field
->offset_root
+ field
->field_size
;
2555 g_error("precompute_fields_offsets : unknown type");
2564 /*****************************************************************************
2566 * precompute_offsets : set the precomputable offset of an event type
2569 * event : event type
2571 ****************************************************************************/
2572 void precompute_offsets(LttFacility
*fac
, LttEventType
*event
)
2578 /* First, compute the size of fixed size fields. Will determine size for
2579 * arrays, struct and unions, which is not done by the parser */
2580 for(i
=0; i
<event
->fields
->len
; i
++) {
2581 LttField
*field
= &g_array_index(event
->fields
, LttField
, i
);
2582 field_compute_static_size(fac
, field
);
2585 /* Precompute all known offsets */
2586 for(i
=0; i
<event
->fields
->len
; i
++) {
2587 LttField
*field
= &g_array_index(event
->fields
, LttField
, i
);
2588 if(event
->has_compact_data
&& i
== 0)
2589 ret
= precompute_fields_offsets(fac
, field
, &offset
, 1);
2591 ret
= precompute_fields_offsets(fac
, field
, &offset
, 0);
2599 /*****************************************************************************
2601 * preset_field_type_size : set the fixed sizes of the field type
2604 * event_type : event type
2605 * offset_root : offset from the root
2606 * offset_parent : offset from the parent
2607 * fixed_root : Do we know a fixed offset to the root ?
2608 * fixed_parent : Do we know a fixed offset to the parent ?
2610 ****************************************************************************/
2614 // preset the fixed size offsets. Calculate them just like genevent-new : an
2615 // increment of a *to value that represents the offset from the start of the
2617 // The preset information is : offsets up to (and including) the first element
2618 // of variable size. All subsequent fields must be flagged "VARIABLE OFFSET".
2620 void preset_field_type_size(LttTracefile
*tf
, LttEventType
*event_type
,
2621 off_t offset_root
, off_t offset_parent
,
2622 enum field_status
*fixed_root
, enum field_status
*fixed_parent
,
2625 enum field_status local_fixed_root
, local_fixed_parent
;
2629 g_assert(field
->fixed_root
== FIELD_UNKNOWN
);
2630 g_assert(field
->fixed_parent
== FIELD_UNKNOWN
);
2631 g_assert(field
->fixed_size
== FIELD_UNKNOWN
);
2633 type
= field
->field_type
;
2635 field
->fixed_root
= *fixed_root
;
2636 if(field
->fixed_root
== FIELD_FIXED
)
2637 field
->offset_root
= offset_root
;
2639 field
->offset_root
= 0;
2641 field
->fixed_parent
= *fixed_parent
;
2642 if(field
->fixed_parent
== FIELD_FIXED
)
2643 field
->offset_parent
= offset_parent
;
2645 field
->offset_parent
= 0;
2647 size_t current_root_offset
;
2648 size_t current_offset
;
2649 enum field_status current_child_status
, final_child_status
;
2652 switch(type
->type_class
) {
2654 case LTT_UINT_FIXED
:
2663 field
->field_size
= ltt_type_size(tf
->trace
, type
);
2664 field
->fixed_size
= FIELD_FIXED
;
2667 field
->field_size
= (off_t
)event_type
->facility
->pointer_size
;
2668 field
->fixed_size
= FIELD_FIXED
;
2672 field
->field_size
= (off_t
)event_type
->facility
->long_size
;
2673 field
->fixed_size
= FIELD_FIXED
;
2678 field
->field_size
= (off_t
)event_type
->facility
->size_t_size
;
2679 field
->fixed_size
= FIELD_FIXED
;
2682 local_fixed_root
= FIELD_VARIABLE
;
2683 local_fixed_parent
= FIELD_VARIABLE
;
2684 preset_field_type_size(tf
, event_type
,
2686 &local_fixed_root
, &local_fixed_parent
,
2688 field
->fixed_size
= FIELD_VARIABLE
;
2689 field
->field_size
= 0;
2690 *fixed_root
= FIELD_VARIABLE
;
2691 *fixed_parent
= FIELD_VARIABLE
;
2694 field
->fixed_size
= FIELD_VARIABLE
;
2695 field
->field_size
= 0;
2696 *fixed_root
= FIELD_VARIABLE
;
2697 *fixed_parent
= FIELD_VARIABLE
;
2700 local_fixed_root
= FIELD_VARIABLE
;
2701 local_fixed_parent
= FIELD_VARIABLE
;
2702 preset_field_type_size(tf
, event_type
,
2704 &local_fixed_root
, &local_fixed_parent
,
2706 field
->fixed_size
= field
->child
[0]->fixed_size
;
2707 if(field
->fixed_size
== FIELD_FIXED
) {
2708 field
->field_size
= type
->element_number
* field
->child
[0]->field_size
;
2710 field
->field_size
= 0;
2711 *fixed_root
= FIELD_VARIABLE
;
2712 *fixed_parent
= FIELD_VARIABLE
;
2716 current_root_offset
= field
->offset_root
;
2718 current_child_status
= FIELD_FIXED
;
2719 for(i
=0;i
<type
->element_number
;i
++) {
2720 preset_field_type_size(tf
, event_type
,
2721 current_root_offset
, current_offset
,
2722 fixed_root
, ¤t_child_status
,
2724 if(current_child_status
== FIELD_FIXED
) {
2725 current_root_offset
+= field
->child
[i
]->field_size
;
2726 current_offset
+= field
->child
[i
]->field_size
;
2728 current_root_offset
= 0;
2732 if(current_child_status
!= FIELD_FIXED
) {
2733 *fixed_parent
= current_child_status
;
2734 field
->field_size
= 0;
2735 field
->fixed_size
= current_child_status
;
2737 field
->field_size
= current_offset
;
2738 field
->fixed_size
= FIELD_FIXED
;
2742 current_root_offset
= field
->offset_root
;
2745 final_child_status
= FIELD_FIXED
;
2746 for(i
=0;i
<type
->element_number
;i
++) {
2747 enum field_status current_root_child_status
= FIELD_FIXED
;
2748 enum field_status current_child_status
= FIELD_FIXED
;
2749 preset_field_type_size(tf
, event_type
,
2750 current_root_offset
, current_offset
,
2751 ¤t_root_child_status
, ¤t_child_status
,
2753 if(current_child_status
!= FIELD_FIXED
)
2754 final_child_status
= current_child_status
;
2756 max_size
= max(max_size
, field
->child
[i
]->field_size
);
2758 if(final_child_status
!= FIELD_FIXED
) {
2759 g_error("LTTV does not support variable size fields in unions.");
2760 /* This will stop the application. */
2761 *fixed_root
= final_child_status
;
2762 *fixed_parent
= final_child_status
;
2763 field
->field_size
= 0;
2764 field
->fixed_size
= current_child_status
;
2766 field
->field_size
= max_size
;
2767 field
->fixed_size
= FIELD_FIXED
;
2771 g_error("unexpected type NONE");
2778 /*****************************************************************************
2780 * check_fields_compatibility : Check for compatibility between two fields :
2781 * do they use the same inner structure ?
2783 * event_type1 : event type
2784 * event_type2 : event type
2787 *Returns : 0 if identical
2789 ****************************************************************************/
2790 // this function checks for equality of field types. Therefore, it does not use
2791 // per se offsets. For instance, an aligned version of a structure is
2792 // compatible with an unaligned version of the same structure.
2794 gint
check_fields_compatibility(LttEventType
*event_type1
,
2795 LttEventType
*event_type2
,
2796 LttField
*field1
, LttField
*field2
)
2798 guint different
= 0;
2802 if(field1
== NULL
) {
2803 if(field2
== NULL
) goto end
;
2808 } else if(field2
== NULL
) {
2813 type1
= &field1
->field_type
;
2814 type2
= &field2
->field_type
;
2816 if(type1
->type_class
!= type2
->type_class
) {
2820 if(type1
->network
!= type2
->network
) {
2825 switch(type1
->type_class
) {
2827 case LTT_UINT_FIXED
:
2842 if(field1
->field_size
!= field2
->field_size
)
2849 LttField
*child1
= &g_array_index(type1
->fields
, LttField
, 0);
2850 LttField
*child2
= &g_array_index(type2
->fields
, LttField
, 0);
2852 if(type1
->size
!= type2
->size
)
2854 if(check_fields_compatibility(event_type1
, event_type2
, child1
, child2
))
2860 LttField
*child1
= &g_array_index(type1
->fields
, LttField
, 1);
2861 LttField
*child2
= &g_array_index(type2
->fields
, LttField
, 1);
2863 if(check_fields_compatibility(event_type1
, event_type2
, child1
, child2
))
2873 if(type1
->fields
->len
!= type2
->fields
->len
) {
2878 for(i
=0; i
< type1
->fields
->len
; i
++) {
2881 child1
= &g_array_index(type1
->fields
, LttField
, i
);
2882 child2
= &g_array_index(type2
->fields
, LttField
, i
);
2883 different
= check_fields_compatibility(event_type1
,
2884 event_type2
, child1
, child2
);
2886 if(different
) break;
2892 g_error("check_fields_compatibility : unknown type");
2901 gint
check_fields_compatibility(LttEventType
*event_type1
,
2902 LttEventType
*event_type2
,
2903 LttField
*field1
, LttField
*field2
)
2905 guint different
= 0;
2910 if(field1
== NULL
) {
2911 if(field2
== NULL
) goto end
;
2916 } else if(field2
== NULL
) {
2921 g_assert(field1
->fixed_root
!= FIELD_UNKNOWN
);
2922 g_assert(field2
->fixed_root
!= FIELD_UNKNOWN
);
2923 g_assert(field1
->fixed_parent
!= FIELD_UNKNOWN
);
2924 g_assert(field2
->fixed_parent
!= FIELD_UNKNOWN
);
2925 g_assert(field1
->fixed_size
!= FIELD_UNKNOWN
);
2926 g_assert(field2
->fixed_size
!= FIELD_UNKNOWN
);
2928 type1
= field1
->field_type
;
2929 type2
= field2
->field_type
;
2931 if(type1
->type_class
!= type2
->type_class
) {
2935 if(type1
->element_name
!= type2
->element_name
) {
2940 switch(type1
->type_class
) {
2942 case LTT_UINT_FIXED
:
2957 if(field1
->field_size
!= field2
->field_size
) {
2963 if(type1
->element_number
!= type2
->element_number
) {
2967 for(i
=0;i
<type1
->element_number
;i
++) {
2968 if(type1
->enum_strings
[i
] != type2
->enum_strings
[i
]) {
2975 /* Two elements : size and child */
2976 g_assert(type1
->element_number
!= type2
->element_number
);
2977 for(i
=0;i
<type1
->element_number
;i
++) {
2978 if(check_fields_compatibility(event_type1
, event_type2
,
2979 field1
->child
[0], field2
->child
[0])) {
2988 if(field1
->field_size
!= field2
->field_size
) {
2992 /* Two elements : size and child */
2993 g_assert(type1
->element_number
!= type2
->element_number
);
2994 for(i
=0;i
<type1
->element_number
;i
++) {
2995 if(check_fields_compatibility(event_type1
, event_type2
,
2996 field1
->child
[0], field2
->child
[0])) {
3004 if(type1
->element_number
!= type2
->element_number
) {
3008 for(i
=0;i
<type1
->element_number
;i
++) {
3009 if(check_fields_compatibility(event_type1
, event_type2
,
3010 field1
->child
[0], field2
->child
[0])) {
3023 /*****************************************************************************
3025 * ltt_get_int : get an integer number
3027 * reverse_byte_order: must we reverse the byte order ?
3028 * size : the size of the integer
3029 * ptr : the data pointer
3031 * gint64 : a 64 bits integer
3032 ****************************************************************************/
3034 gint64
ltt_get_int(gboolean reverse_byte_order
, gint size
, void *data
)
3039 case 1: val
= *((gint8
*)data
); break;
3040 case 2: val
= ltt_get_int16(reverse_byte_order
, data
); break;
3041 case 4: val
= ltt_get_int32(reverse_byte_order
, data
); break;
3042 case 8: val
= ltt_get_int64(reverse_byte_order
, data
); break;
3043 default: val
= ltt_get_int64(reverse_byte_order
, data
);
3044 g_critical("get_int : integer size %d unknown", size
);
3051 /*****************************************************************************
3053 * ltt_get_uint : get an unsigned integer number
3055 * reverse_byte_order: must we reverse the byte order ?
3056 * size : the size of the integer
3057 * ptr : the data pointer
3059 * guint64 : a 64 bits unsigned integer
3060 ****************************************************************************/
3062 guint64
ltt_get_uint(gboolean reverse_byte_order
, gint size
, void *data
)
3067 case 1: val
= *((gint8
*)data
); break;
3068 case 2: val
= ltt_get_uint16(reverse_byte_order
, data
); break;
3069 case 4: val
= ltt_get_uint32(reverse_byte_order
, data
); break;
3070 case 8: val
= ltt_get_uint64(reverse_byte_order
, data
); break;
3071 default: val
= ltt_get_uint64(reverse_byte_order
, data
);
3072 g_critical("get_uint : unsigned integer size %d unknown",
3081 /* get the node name of the system */
3083 char * ltt_trace_system_description_node_name (LttSystemDescription
* s
)
3085 return s
->node_name
;
3089 /* get the domain name of the system */
3091 char * ltt_trace_system_description_domain_name (LttSystemDescription
* s
)
3093 return s
->domain_name
;
3097 /* get the description of the system */
3099 char * ltt_trace_system_description_description (LttSystemDescription
* s
)
3101 return s
->description
;
3105 /* get the NTP corrected start time of the trace */
3106 LttTime
ltt_trace_start_time(LttTrace
*t
)
3108 return t
->start_time
;
3111 /* get the monotonic start time of the trace */
3112 LttTime
ltt_trace_start_time_monotonic(LttTrace
*t
)
3114 return t
->start_time_from_tsc
;
3117 LttTracefile
*ltt_tracefile_new()
3119 return g_new(LttTracefile
, 1);
3122 void ltt_tracefile_destroy(LttTracefile
*tf
)
3127 void ltt_tracefile_copy(LttTracefile
*dest
, const LttTracefile
*src
)
3132 /* Before library loading... */
3136 LTT_FACILITY_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
3137 LTT_EVENT_NAME_HEARTBEAT
= g_quark_from_string("heartbeat");
3138 LTT_EVENT_NAME_HEARTBEAT_FULL
= g_quark_from_string("heartbeat_full");
3140 LTT_TRACEFILE_NAME_FACILITIES
= g_quark_from_string("/control/facilities");