54ecbf38 |
1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2005 Mathieu Desnoyers |
3 | * |
4 | * Complete rewrite from the original version made by XangXiu Yang. |
5 | * |
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; |
9 | * |
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. |
14 | * |
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, |
18 | * MA 02111-1307, USA. |
19 | */ |
20 | |
21 | #ifdef HAVE_CONFIG_H |
22 | #include <config.h> |
23 | #endif |
24 | |
25 | #include <stdio.h> |
26 | #include <fcntl.h> |
27 | #include <string.h> |
28 | #include <dirent.h> |
29 | #include <sys/stat.h> |
30 | #include <sys/types.h> |
31 | #include <errno.h> |
32 | #include <unistd.h> |
33 | #include <math.h> |
34 | #include <glib.h> |
35 | #include <malloc.h> |
36 | #include <sys/mman.h> |
37 | |
38 | // For realpath |
39 | #include <limits.h> |
40 | #include <stdlib.h> |
41 | |
42 | |
43 | #include "parser.h" |
44 | #include <ltt/ltt.h> |
45 | #include "ltt-private.h" |
46 | #include <ltt/trace.h> |
47 | #include <ltt/facility.h> |
48 | #include <ltt/event.h> |
49 | #include <ltt/type.h> |
50 | #include <ltt/ltt-types.h> |
51 | |
52 | |
53 | /* Facility names used in this file */ |
54 | |
55 | GQuark LTT_FACILITY_NAME_HEARTBEAT, |
56 | LTT_EVENT_NAME_HEARTBEAT; |
57 | |
58 | #ifndef g_open |
59 | #define g_open open |
60 | #endif |
61 | |
62 | |
63 | #define __UNUSED__ __attribute__((__unused__)) |
64 | |
65 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
66 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
67 | |
68 | #define g_close close |
69 | |
70 | /* obtain the time of an event */ |
71 | |
72 | static inline LttTime getEventTime(LttTracefile * tf); |
73 | |
74 | |
75 | /* set the offset of the fields belonging to the event, |
76 | need the information of the archecture */ |
77 | void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace *t); |
78 | |
79 | /* get the size of the field type according to the archtecture's |
80 | size and endian type(info of the archecture) */ |
81 | static inline gint getFieldtypeSize(LttTracefile * tf, |
82 | LttEventType * evT, gint offsetRoot, |
83 | gint offsetParent, LttField *fld, void *evD, LttTrace* t); |
84 | |
2896f39c |
85 | /* map a fixed size or a block information from the file (fd) */ |
54ecbf38 |
86 | int map_block(LttTracefile * tf, unsigned int block_num); |
87 | |
88 | /* calculate cycles per nsec for current block */ |
89 | void getCyclePerNsec(LttTracefile * t); |
90 | |
54ecbf38 |
91 | /* go to the next event */ |
2896f39c |
92 | static int ltt_seek_next_event(LttTracefile *tf); |
54ecbf38 |
93 | |
94 | /* Functions to parse system.xml file (using glib xml parser) */ |
95 | static void parser_start_element (GMarkupParseContext __UNUSED__ *context, |
96 | const gchar *element_name, |
97 | const gchar **attribute_names, |
98 | const gchar **attribute_values, |
99 | gpointer user_data, |
100 | GError **error) |
101 | { |
102 | int i=0; |
103 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
104 | if(strcmp("system", element_name)){ |
105 | *error = g_error_new(G_MARKUP_ERROR, |
106 | G_LOG_LEVEL_WARNING, |
107 | "This is not system.xml file"); |
108 | return; |
109 | } |
110 | |
111 | while(attribute_names[i]){ |
112 | if(strcmp("node_name", attribute_names[i])==0){ |
113 | des->node_name = g_strdup(attribute_values[i]); |
114 | }else if(strcmp("domainname", attribute_names[i])==0){ |
115 | des->domain_name = g_strdup(attribute_values[i]); |
116 | }else if(strcmp("cpu", attribute_names[i])==0){ |
117 | des->nb_cpu = atoi(attribute_values[i]); |
118 | }else if(strcmp("arch_size", attribute_names[i])==0){ |
119 | if(strcmp(attribute_values[i],"LP32") == 0) des->size = LTT_LP32; |
120 | else if(strcmp(attribute_values[i],"ILP32") == 0) des->size = LTT_ILP32; |
121 | else if(strcmp(attribute_values[i],"LP64") == 0) des->size = LTT_LP64; |
122 | else if(strcmp(attribute_values[i],"ILP64") == 0) des->size = LTT_ILP64; |
123 | else if(strcmp(attribute_values[i],"UNKNOWN") == 0) des->size = LTT_UNKNOWN; |
124 | }else if(strcmp("endian", attribute_names[i])==0){ |
125 | if(strcmp(attribute_values[i],"LITTLE_ENDIAN") == 0) |
126 | des->endian = LTT_LITTLE_ENDIAN; |
127 | else if(strcmp(attribute_values[i],"BIG_ENDIAN") == 0) |
128 | des->endian = LTT_BIG_ENDIAN; |
129 | }else if(strcmp("kernel_name", attribute_names[i])==0){ |
130 | des->kernel_name = g_strdup(attribute_values[i]); |
131 | }else if(strcmp("kernel_release", attribute_names[i])==0){ |
132 | des->kernel_release = g_strdup(attribute_values[i]); |
133 | }else if(strcmp("kernel_version", attribute_names[i])==0){ |
134 | des->kernel_version = g_strdup(attribute_values[i]); |
135 | }else if(strcmp("machine", attribute_names[i])==0){ |
136 | des->machine = g_strdup(attribute_values[i]); |
137 | }else if(strcmp("processor", attribute_names[i])==0){ |
138 | des->processor = g_strdup(attribute_values[i]); |
139 | }else if(strcmp("hardware_platform", attribute_names[i])==0){ |
140 | des->hardware_platform = g_strdup(attribute_values[i]); |
141 | }else if(strcmp("operating_system", attribute_names[i])==0){ |
142 | des->operating_system = g_strdup(attribute_values[i]); |
143 | }else if(strcmp("ltt_major_version", attribute_names[i])==0){ |
144 | des->ltt_major_version = atoi(attribute_values[i]); |
145 | }else if(strcmp("ltt_minor_version", attribute_names[i])==0){ |
146 | des->ltt_minor_version = atoi(attribute_values[i]); |
147 | }else if(strcmp("ltt_block_size", attribute_names[i])==0){ |
148 | des->ltt_block_size = atoi(attribute_values[i]); |
149 | }else{ |
150 | *error = g_error_new(G_MARKUP_ERROR, |
151 | G_LOG_LEVEL_WARNING, |
152 | "Not a valid attribute"); |
153 | return; |
154 | } |
155 | i++; |
156 | } |
157 | } |
158 | |
159 | static void parser_characters (GMarkupParseContext __UNUSED__ *context, |
160 | const gchar *text, |
161 | gsize __UNUSED__ text_len, |
162 | gpointer user_data, |
163 | GError __UNUSED__ **error) |
164 | { |
165 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
166 | des->description = g_strdup(text); |
167 | } |
168 | |
169 | |
170 | /***************************************************************************** |
171 | *Function name |
172 | * ltt_tracefile_open : open a trace file, construct a LttTracefile |
173 | *Input params |
174 | * t : the trace containing the tracefile |
175 | * fileName : path name of the trace file |
176 | * tf : the tracefile structure |
177 | *Return value |
178 | * : 0 for success, -1 otherwise. |
179 | ****************************************************************************/ |
180 | |
181 | int ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf) |
182 | { |
183 | struct stat lTDFStat; /* Trace data file status */ |
184 | struct ltt_block_start_header *header; |
185 | |
186 | //open the file |
187 | tf->name = g_quark_from_string(fileName); |
188 | tf->trace = t; |
189 | tf->fd = g_open(fileName, O_RDONLY, 0); |
190 | if(tf->fd < 0){ |
191 | g_warning("Unable to open input data file %s\n", fileName); |
192 | goto end; |
193 | } |
194 | |
195 | // Get the file's status |
196 | if(fstat(tf->fd, &lTDFStat) < 0){ |
197 | g_warning("Unable to get the status of the input data file %s\n", fileName); |
198 | goto close_file; |
199 | } |
200 | |
201 | // Is the file large enough to contain a trace |
202 | if(lTDFStat.st_size < (off_t)(sizeof(BlockStart))){ |
203 | g_print("The input data file %s does not contain a trace\n", fileName); |
204 | goto close_file; |
205 | } |
206 | |
207 | /* Temporarily map the buffer start header to get trace information */ |
208 | /* Multiple of pages aligned head */ |
209 | tf->buffer.head = mmap(0, sizeof(struct ltt_block_start_header), PROT_READ, |
210 | tf->fd, 0); |
211 | if(tf->buffer == NULL) { |
212 | perror("Error in allocating memory for buffer of tracefile %s\n", fileName); |
213 | goto close_file; |
214 | } |
215 | g_assert(tf->buffer.head & (8-1) == 0); // make sure it's aligned. |
216 | |
217 | header = (struct ltt_block_start_header*)tf->buffer.head; |
218 | |
219 | if(header->traceset.magic_number == LTT_MAGIC_NUMBER) |
220 | tf->reverse_bo = 0; |
221 | else if(header->traceset.magic_number == LTT_REV_MAGIC_NUMBER) |
222 | tf->reverse_bo = 1; |
223 | else /* invalid magic number, bad tracefile ! */ |
224 | goto unmap_file; |
225 | |
226 | //store the size of the file |
227 | tf->file_size = lTDFStat.st_size; |
228 | tf->block_size = header->buf_size; |
229 | tf->block_number = tf->file_size / tf->block_size; |
230 | |
231 | vfree(tf->buffer.head); |
232 | tf->buffer.head = NULL; |
233 | |
234 | //read the first block |
235 | if(map_block(tf,0)) { |
236 | perror("Cannot map block %u for tracefile %s\n", 0, fileName); |
237 | goto close_file; |
238 | } |
239 | |
240 | return 0; |
241 | |
242 | /* Error */ |
243 | unmap_file: |
244 | munmap(tf->buffer.head, sizeof(struct ltt_block_start_header)); |
245 | close_file: |
246 | g_close(tf->fd); |
247 | end: |
248 | return -1; |
249 | } |
250 | |
251 | |
252 | /***************************************************************************** |
253 | *Open control and per cpu tracefiles |
254 | ****************************************************************************/ |
255 | |
256 | void ltt_tracefile_open_cpu(LttTrace *t, gchar * tracefile_name) |
257 | { |
258 | LttTracefile * tf; |
259 | tf = ltt_tracefile_open(t,tracefile_name); |
260 | if(!tf) return; |
261 | t->per_cpu_tracefile_number++; |
262 | g_ptr_array_add(t->per_cpu_tracefiles, tf); |
263 | } |
264 | |
265 | gint ltt_tracefile_open_control(LttTrace *t, gchar * control_name) |
266 | { |
267 | LttTracefile * tf; |
268 | LttEvent ev; |
269 | LttFacility * f; |
270 | void * pos; |
271 | FacilityLoad fLoad; |
272 | unsigned int i; |
273 | |
274 | tf = ltt_tracefile_open(t,control_name); |
275 | if(!tf) { |
276 | g_warning("ltt_tracefile_open_control : bad file descriptor"); |
277 | return -1; |
278 | } |
279 | t->control_tracefile_number++; |
280 | g_ptr_array_add(t->control_tracefiles,tf); |
281 | |
282 | //parse facilities tracefile to get base_id |
283 | if(strcmp(&control_name[strlen(control_name)-10],"facilities") ==0){ |
284 | while(1){ |
285 | if(!ltt_tracefile_read(tf,&ev)) return 0; // end of file |
286 | |
287 | if(ev.event_id == TRACE_FACILITY_LOAD){ |
288 | pos = ev.data; |
289 | fLoad.name = (gchar*)pos; |
290 | fLoad.checksum = *(LttChecksum*)(pos + strlen(fLoad.name)); |
291 | fLoad.base_code = *(guint32 *)(pos + strlen(fLoad.name) + sizeof(LttChecksum)); |
292 | |
293 | for(i=0;i<t->facility_number;i++){ |
294 | f = (LttFacility*)g_ptr_array_index(t->facilities,i); |
295 | if(strcmp(f->name,fLoad.name)==0 && fLoad.checksum==f->checksum){ |
296 | f->base_id = fLoad.base_code; |
297 | break; |
298 | } |
299 | } |
300 | if(i==t->facility_number) { |
301 | g_warning("Facility: %s, checksum: %u is not found", |
302 | fLoad.name,(unsigned int)fLoad.checksum); |
303 | return -1; |
304 | } |
305 | }else if(ev.event_id == TRACE_BLOCK_START){ |
306 | continue; |
307 | }else if(ev.event_id == TRACE_BLOCK_END){ |
308 | break; |
309 | }else { |
310 | g_warning("Not valid facilities trace file"); |
311 | return -1; |
312 | } |
313 | } |
314 | } |
315 | return 0; |
316 | } |
317 | |
318 | /***************************************************************************** |
319 | *Function name |
320 | * ltt_tracefile_close: close a trace file, |
321 | *Input params |
322 | * t : tracefile which will be closed |
323 | ****************************************************************************/ |
324 | |
325 | void ltt_tracefile_close(LttTracefile *t) |
326 | { |
327 | if(t->buffer.head != NULL) |
328 | munmap(t->buffer.head, t->buf_size); |
329 | g_close(t->fd); |
330 | } |
331 | |
332 | |
333 | /***************************************************************************** |
334 | *Get system information |
335 | ****************************************************************************/ |
336 | gint getSystemInfo(LttSystemDescription* des, gchar * pathname) |
337 | { |
338 | int fd; |
339 | GIOChannel *iochan; |
340 | gchar *buf = NULL; |
341 | gsize length; |
342 | |
343 | GMarkupParseContext * context; |
344 | GError * error = NULL; |
345 | GMarkupParser markup_parser = |
346 | { |
347 | parser_start_element, |
348 | NULL, |
349 | parser_characters, |
350 | NULL, /* passthrough */ |
351 | NULL /* error */ |
352 | }; |
353 | |
354 | fd = g_open(pathname, O_RDONLY, 0); |
355 | if(fd == -1){ |
356 | g_warning("Can not open file : %s\n", pathname); |
357 | return -1; |
358 | } |
359 | |
360 | iochan = g_io_channel_unix_new(fd); |
361 | |
362 | context = g_markup_parse_context_new(&markup_parser, 0, des,NULL); |
363 | |
364 | //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){ |
365 | while(g_io_channel_read_line(iochan, &buf, &length, NULL, &error) |
366 | != G_IO_STATUS_EOF) { |
367 | |
368 | if(error != NULL) { |
369 | g_warning("Can not read xml file: \n%s\n", error->message); |
370 | g_error_free(error); |
371 | } |
372 | if(!g_markup_parse_context_parse(context, buf, length, &error)){ |
373 | if(error != NULL) { |
374 | g_warning("Can not parse xml file: \n%s\n", error->message); |
375 | g_error_free(error); |
376 | } |
377 | g_markup_parse_context_free(context); |
378 | |
379 | g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ |
380 | if(error != NULL) { |
381 | g_warning("Can not close file: \n%s\n", error->message); |
382 | g_error_free(error); |
383 | } |
384 | |
385 | close(fd); |
386 | return -1; |
387 | } |
388 | } |
389 | g_markup_parse_context_free(context); |
390 | |
391 | g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ |
392 | if(error != NULL) { |
393 | g_warning("Can not close file: \n%s\n", error->message); |
394 | g_error_free(error); |
395 | } |
396 | |
397 | g_close(fd); |
398 | |
399 | g_free(buf); |
400 | return 0; |
401 | } |
402 | |
403 | /***************************************************************************** |
404 | *The following functions get facility/tracefile information |
405 | ****************************************************************************/ |
406 | |
407 | gint getFacilityInfo(LttTrace *t, gchar* eventdefs) |
408 | { |
409 | GDir * dir; |
410 | const gchar * name; |
411 | unsigned int i,j; |
412 | LttFacility * f; |
413 | LttEventType * et; |
414 | gchar fullname[DIR_NAME_SIZE]; |
415 | GError * error = NULL; |
416 | |
417 | dir = g_dir_open(eventdefs, 0, &error); |
418 | |
419 | if(error != NULL) { |
420 | g_warning("Can not open directory: %s, %s\n", eventdefs, error->message); |
421 | g_error_free(error); |
422 | return -1; |
423 | } |
424 | |
425 | while((name = g_dir_read_name(dir)) != NULL){ |
426 | if(!g_pattern_match_simple("*.xml", name)) continue; |
427 | strcpy(fullname,eventdefs); |
428 | strcat(fullname,name); |
429 | ltt_facility_open(t,fullname); |
430 | } |
431 | g_dir_close(dir); |
432 | |
433 | for(j=0;j<t->facility_number;j++){ |
434 | f = (LttFacility*)g_ptr_array_index(t->facilities, j); |
435 | for(i=0; i<f->event_number; i++){ |
436 | et = f->events[i]; |
437 | setFieldsOffset(NULL, et, NULL, t); |
438 | } |
439 | } |
440 | return 0; |
441 | } |
442 | |
443 | /***************************************************************************** |
444 | *A trace is specified as a pathname to the directory containing all the |
445 | *associated data (control tracefiles, per cpu tracefiles, event |
446 | *descriptions...). |
447 | * |
448 | *When a trace is closed, all the associated facilities, types and fields |
449 | *are released as well. |
450 | */ |
451 | |
452 | |
453 | /**************************************************************************** |
454 | * get_absolute_pathname |
455 | * |
456 | * return the unique pathname in the system |
457 | * |
458 | * MD : Fixed this function so it uses realpath, dealing well with |
459 | * forgotten cases (.. were not used correctly before). |
460 | * |
461 | ****************************************************************************/ |
462 | void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname) |
463 | { |
464 | abs_pathname[0] = '\0'; |
465 | |
466 | if ( realpath (pathname, abs_pathname) != NULL) |
467 | return; |
468 | else |
469 | { |
470 | /* error, return the original path unmodified */ |
471 | strcpy(abs_pathname, pathname); |
472 | return; |
473 | } |
474 | return; |
475 | } |
476 | |
477 | /* Search for something like : .*_.* |
478 | * |
479 | * The left side is the name, the right side is the number. |
480 | */ |
481 | |
482 | int get_tracefile_name_number(const gchar *raw_name, |
483 | GQuark *name, |
484 | guint *num) |
485 | { |
486 | guint raw_name_len = strlen(raw_name); |
487 | gchar char_name[PATH_MAX] |
488 | gchar *digit_begin; |
489 | int i; |
490 | int underscore_pos; |
491 | long int cpu_num; |
492 | gchar *endptr; |
493 | |
494 | for(i=raw_name_len-1;i>=0;i--) { |
495 | if(raw_name[i] == '_') break; |
496 | } |
497 | if(i==0) /* Either not found or name length is 0 */ |
498 | return -1; |
499 | underscore_pos = i; |
500 | |
501 | cpu_num = strtol(raw_name+underscore_pos+1, &endptr, 10); |
502 | |
503 | if(endptr == raw_name+underscore_pos+1) |
504 | return -1; /* No digit */ |
505 | if(cpu_num == LONG_MIN || cpu_num == LONG_MAX) |
506 | return -1; /* underflow / overflow */ |
507 | |
508 | char_name = strncpy(char_name, raw_name, underscore_pos); |
509 | |
510 | *name = g_quark_from_string(char_name); |
511 | *num = cpu_num; |
512 | |
513 | return 0; |
514 | } |
515 | |
516 | |
517 | void ltt_tracefile_group_destroy(gpointer data) |
518 | { |
519 | GArray *group = (GArray *)data; |
520 | int i; |
521 | LttTracefile *tf; |
522 | |
523 | for(i=0; i<group->len; i++) { |
524 | tf = &g_array_index (group, LttTracefile, i); |
525 | if(tf->cpu_online) |
526 | ltt_tracefile_close(tf); |
527 | } |
2896f39c |
528 | g_array_free(group, TRUE); |
54ecbf38 |
529 | } |
530 | |
531 | gboolean ltt_tracefile_group_has_cpu_online(gpointer data) |
532 | { |
533 | GArray *group = (GArray *)data; |
534 | int i; |
535 | LttTracefile *tf; |
536 | |
537 | for(i=0; i<group->len; i++) { |
538 | tf = &g_array_index (group, LttTracefile, i); |
539 | if(tf->cpu_online) return 1; |
540 | } |
541 | return 0; |
542 | } |
543 | |
544 | |
545 | /* Open each tracefile under a specific directory. Put them in a |
546 | * GData : permits to access them using their tracefile group pathname. |
547 | * i.e. access control/modules tracefile group by index : |
548 | * "control/module". |
549 | * |
550 | * A tracefile group is simply an array where all the per cpu tracefiles sits. |
551 | */ |
552 | |
553 | static int open_tracefiles(LttTrace *trace, char *root_path, GData *tracefiles) |
554 | { |
555 | DIR *dir = opendir(root_path); |
556 | struct dirent *entry; |
557 | struct stat stat_buf; |
558 | int ret; |
559 | char path[PATH_MAX]; |
560 | int path_len; |
561 | char *path_ptr; |
562 | |
563 | if(channel_dir == NULL) { |
564 | perror(subchannel_name); |
565 | return ENOENT; |
566 | } |
567 | |
568 | strncpy(path, root_path, PATH_MAX-1); |
569 | path_len = strlen(path); |
570 | path[path_len] = '/'; |
571 | path_len++; |
572 | path_ptr = path + path_len; |
573 | |
574 | while((entry = readdir(channel_dir)) != NULL) { |
575 | |
576 | if(entry->d_name[0] == '.') continue; |
577 | |
578 | strncpy(path_ptr, entry->d_name, PATH_MAX - path_len); |
579 | |
580 | ret = stat(path, &stat_buf); |
581 | if(ret == -1) { |
582 | perror(path); |
583 | continue; |
584 | } |
585 | |
586 | g_debug("Tracefile file or directory : %s\n", path); |
587 | |
588 | if(S_ISDIR(stat_buf.st_mode)) { |
589 | |
590 | g_debug("Entering subdirectory...\n"); |
591 | ret = open_tracefiles(path, tracefiles); |
592 | if(ret < 0) continue; |
593 | } else if(S_ISREG(stat_buf.st_mode)) { |
594 | g_debug("Opening file.\n"); |
595 | |
596 | GQuark name; |
597 | guint num; |
598 | GArray *group; |
599 | LttTracefile *tf; |
600 | guint len; |
601 | |
602 | if(get_tracefile_name_number(path, &name, &num)) |
603 | continue; /* invalid name */ |
604 | |
605 | group = g_datalist_get_data(tracefiles, name); |
606 | if(group == NULL) { |
607 | /* Elements are automatically cleared when the array is allocated. |
608 | * It makes the cpu_online variable set to 0 : cpu offline, by default. |
609 | */ |
610 | group = g_array_sized_new (FALSE, TRUE, sizeof(LttTracefile), 10); |
611 | g_datalist_set_data_full(tracefiles, name, |
612 | group, ltt_tracefile_group_destroy); |
613 | } |
614 | /* Add the per cpu tracefile to the named group */ |
615 | unsigned int old_len = group->len; |
616 | if(num+1 > old_len) |
2896f39c |
617 | group = g_array_set_size(group, num+1); |
54ecbf38 |
618 | tf = &g_array_index (group, LttTracefile, num); |
619 | |
620 | if(ltt_tracefile_open(trace, path, tf)) { |
621 | g_info("Error opening tracefile %s", path); |
622 | g_array_set_size(group, old_len); |
623 | |
624 | if(!ltt_tracefile_group_has_cpu_online(group)) |
625 | g_datalist_remove_data(tracefiles, name); |
626 | |
627 | continue; /* error opening the tracefile : bad magic number ? */ |
628 | } |
629 | tf->cpu_online = 1; |
630 | } |
631 | } |
632 | |
633 | closedir(dir); |
634 | |
635 | return 0; |
636 | } |
637 | |
2896f39c |
638 | /* ltt_get_facility_description |
639 | * |
640 | * Opens the trace corresponding to the requested facility (identified by fac_id |
641 | * and checksum). |
642 | * |
643 | * The name searched is : %trace root%/eventdefs/facname_checksum.xml |
644 | * |
645 | * Returns 0 on success, or 1 on failure. |
646 | */ |
647 | |
648 | static int ltt_get_facility_description(LttFacility *f, |
649 | LttTrace *t) |
650 | { |
651 | char desc_file_name[PATH_MAX]; |
652 | char *text; |
653 | guint textlen; |
654 | gint err; |
655 | |
656 | text = g_quark_to_string(t->pathname); |
657 | textlen = strlen(text); |
658 | |
659 | if(textlen >= PATH_MAX) goto name_error; |
660 | strcpy(desc_file_name, text); |
661 | |
662 | text = "/eventdefs/"; |
663 | textlen+=strlen(text); |
664 | if(textlen >= PATH_MAX) goto name_error; |
665 | strcat(desc_file_name, text); |
666 | |
667 | text = g_quark_to_string(f->name); |
668 | textlen+=strlen(text); |
669 | if(textlen >= PATH_MAX) goto name_error; |
670 | strcat(desc_file_name, text); |
671 | |
672 | text = "_"; |
673 | textlen+=strlen(text); |
674 | if(textlen >= PATH_MAX) goto name_error; |
675 | strcat(desc_file_name, text); |
676 | |
677 | err = snprintf(desc_file_name+textlen, PATH_MAX-textlen-1, |
678 | "%u", f->checksum); |
679 | if(err) goto name_error; |
680 | |
681 | textlen=strlen(desc_file_name); |
682 | |
683 | text = ".xml"; |
684 | textlen+=strlen(text); |
685 | if(textlen >= PATH_MAX) goto name_error; |
686 | strcat(desc_file_name, text); |
687 | |
688 | err = ltt_facility_open(f, t, desc_file_name); |
689 | if(err) goto facility_error; |
690 | |
691 | return 0; |
692 | |
693 | facility_error: |
694 | name_error: |
695 | return 1; |
696 | } |
697 | |
698 | static void ltt_tracefile_ids_destroy(gpointer data) |
699 | { |
700 | GArray *fac_ids = (GArray *)data; |
701 | int i; |
702 | LttFacility *fac; |
703 | |
704 | for(i=0; i<group->len; i++) { |
705 | fac = &g_array_index (fac_ids, LttFacility, i); |
706 | ltt_facility_close(fac); |
707 | } |
708 | |
709 | g_array_free(array, TRUE); |
710 | } |
711 | |
712 | |
713 | /* Presumes the tracefile is already seeked at the beginning. It makes sense, |
714 | * because it must be done just after the opening */ |
715 | static int ltt_process_facility_tracefile(LttTracefile *tf) |
716 | { |
717 | int err; |
718 | LttFacility *fac; |
719 | GArray *fac_ids; |
720 | |
721 | while(1) { |
722 | err = ltt_tracefile_read_seek(tf); |
723 | if(err == EPERM) goto seek_error;; |
724 | else if(err == ERANGE) break; /* End of tracefile */ |
725 | |
726 | err = ltt_tracefile_read_update_event(tf); |
727 | if(err) goto update_error; |
728 | |
729 | /* We are on a facility load/or facility unload/ or heartbeat event */ |
730 | /* The rules are : |
731 | * * facility 0 is hardcoded : this is the core facility. It will be shown |
732 | * in the facility array though, and is shown as "loaded builtin" in the |
733 | * trace. |
734 | * It contains event : |
735 | * 0 : facility load |
736 | * 1 : facility unload |
737 | * 2 : state dump facility load |
738 | * Facility 1 : (heartbeat) |
739 | * 0 : heartbeat |
740 | */ |
741 | if(tf->event.facility_id > 1) { /* Should only contain core and heartbeat |
742 | facilities */ |
743 | g_warning("Error in processing facility file %s, " |
744 | "should not contain facility id %u.", g_quark_to_string(tf->name), |
745 | tf->event.facility_id); |
746 | err = EPERM; |
747 | goto fac_id_error; |
748 | } else if(tf->event.facility_id == 0) { |
749 | |
750 | // FIXME align |
751 | switch((enum ltt_core_events)tf->event.event_id) { |
752 | case LTT_EVENT_FACILITY_LOAD: |
753 | struct LttFacilityLoad *fac_load_data = |
754 | (struct LttFacilityLoad *)tf->event.data; |
755 | char *fac_name = |
756 | (char*)(tf->event.data + sizeof(struct LttFacilityLoad)); |
757 | fac = &g_array_index (tf->facilities_by_num, LttTracefile, |
758 | tf->event.); |
759 | g_assert(fac->exists == 0); |
760 | fac->name = g_quark_from_string(fac_name); |
761 | fac->checksum = ltt_get_uint32(LTT_GET_BO(tf), |
762 | fac_load_data->checksum); |
763 | fac->id = ltt_get_uint8(LTT_GET_BO(tf), fac_load_data->id); |
764 | fac->pointer_size = ltt_get_uint32(LTT_GET_BO(tf), |
765 | fac_load_data->pointer_size); |
766 | fac->size_t_size = ltt_get_uin32(LTT_GET_BO(tf), |
767 | fac_load_data->size_t_size); |
768 | fac->alignment = ltt_get_uint32(LTT_GET_BO(tf), |
769 | fac_load_data->alignment); |
770 | |
771 | if(ltt_get_facility_description(fac, tf->trace)) |
772 | goto facility_error; |
773 | |
774 | fac->exists = 1; |
775 | |
776 | fac_ids = g_datalist_get_data(tf->facilities_by_name, fac->name); |
777 | if(fac_ids == NULL) { |
778 | fac_ids = g_array_sized_new (FALSE, TRUE, sizeof(guint), 1); |
779 | g_datalist_set_data_full(tf->facilities_by_name, fac->name, |
780 | fac_ids, ltt_fac_ids_destroy); |
781 | } |
782 | g_array_append_val(fac_ids, fac->id); |
783 | |
784 | break; |
785 | case LTT_EVENT_FACILITY_UNLOAD: |
786 | /* We don't care about unload : facilities ID are valid for the whole |
787 | * trace. They simply won't be used after the unload. */ |
788 | break; |
789 | case LTT_EVENT_STATE_DUMP_FACILITY_LOAD: |
790 | struct LttFacilityLoad *fac_load_data = |
791 | (struct LttFacilityLoad *)tf->event.data; |
792 | char *fac_name = |
793 | (char*)(tf->event.data + sizeof(struct LttFacilityLoad)); |
794 | fac = &g_array_index (tf->facilities_by_num, LttTracefile, |
795 | tf->event.); |
796 | g_assert(fac->exists == 0); |
797 | fac->name = g_quark_from_string(fac_name); |
798 | fac->checksum = ltt_get_uint32(LTT_GET_BO(tf), |
799 | fac_load_data->checksum); |
800 | fac->id = ltt_get_uint8(LTT_GET_BO(tf), fac_load_data->id); |
801 | fac->pointer_size = ltt_get_uint32(LTT_GET_BO(tf), |
802 | fac_load_data->pointer_size); |
803 | fac->size_t_size = ltt_get_uin32(LTT_GET_BO(tf), |
804 | fac_load_data->size_t_size); |
805 | fac->alignment = ltt_get_uint32(LTT_GET_BO(tf), |
806 | fac_load_data->alignment); |
807 | fac->events; |
808 | fac->named_types; |
809 | fac->named_types_number; |
810 | fac->exists = 1; |
811 | |
812 | fac_ids = g_datalist_get_data(tf->facilities_by_name, fac->name); |
813 | if(fac_ids == NULL) { |
814 | fac_ids = g_array_sized_new (FALSE, TRUE, sizeof(guint), 1); |
815 | g_datalist_set_data_full(tf->facilities_by_name, fac->name, |
816 | fac_ids, ltt_fac_ids_destroy); |
817 | } |
818 | g_array_append_val(fac_ids, fac->id); |
819 | |
820 | break; |
821 | default: |
822 | g_warning("Error in processing facility file %s, " |
823 | "unknown event id %hhu in core facility.", |
824 | g_quark_to_string(tf->name), |
825 | tf->event.event_id); |
826 | err = EPERM; |
827 | goto event_id_error; |
828 | } |
829 | } else if(tf->event.facility_id == 1) { |
830 | |
831 | switch((enum ltt_heartbeat_events)tf->event.event_id) { |
832 | case LTT_EVENT_HEARTBEAT: |
833 | break; |
834 | default: |
835 | g_warning("Error in processing facility file %s, " |
836 | "unknown event id %hhu in heartbeat facility.", |
837 | g_quark_to_string(tf->name), |
838 | tf->event.event_id); |
839 | err = EPERM; |
840 | goto event_id_error; |
841 | } |
842 | } |
843 | } |
844 | return 0; |
845 | |
846 | /* Error handling */ |
847 | facility_error: |
848 | event_id_error: |
849 | fac_id_error: |
850 | update_error: |
851 | seek_error: |
852 | return err; |
853 | } |
854 | |
855 | |
54ecbf38 |
856 | LttTrace *ltt_trace_open(const gchar *pathname) |
857 | { |
858 | gchar abs_path[PATH_MAX]; |
859 | LttTrace * t; |
2896f39c |
860 | LttTracefile *tf; |
54ecbf38 |
861 | GArray *group; |
862 | int i; |
863 | |
864 | LttTrace * t = g_new(LttTrace, 1); |
865 | if(!t) goto alloc_error; |
866 | |
867 | get_absolute_pathname(pathname, abs_path); |
868 | t->pathname = g_quark_from_string(abs_path); |
869 | |
870 | /* Open all the tracefiles */ |
871 | g_datalist_init(t->tracefiles); |
872 | if(open_tracefiles(t, abs_path, t->tracefiles)) |
873 | goto open_error; |
874 | |
2896f39c |
875 | /* Prepare the facilities containers : array and mapping */ |
876 | /* Array is zeroed : the "exists" field is set to false by default */ |
877 | t->facilities_by_num = g_array_sized_new (FALSE, |
878 | TRUE, sizeof(LttFacility), |
879 | NUM_FACILITIES); |
880 | t->facilities_by_num = g_array_set_size(t->facilities_by_num, NUM_FACILITIES); |
881 | |
882 | g_datalist_init(t->tracefiles_by_name); |
883 | |
54ecbf38 |
884 | /* Load trace XML event descriptions */ |
885 | //TODO |
886 | |
887 | /* Parse each trace control/facilitiesN files : get runtime fac. info */ |
888 | group = g_datalist_get_data(t->tracefiles, LTT_TRACEFILE_NAME_FACILITIES); |
889 | if(group == NULL) { |
890 | g_error("Trace %s has no facility tracefile", abs_path); |
891 | goto facilities_error; |
892 | } |
893 | |
894 | for(i=0; i<group->len; i++) { |
895 | tf = &g_array_index (group, LttTracefile, i); |
2896f39c |
896 | if(ltt_process_facility_tracefile(tf)) |
897 | goto facilities_error; |
54ecbf38 |
898 | } |
899 | |
900 | |
901 | |
902 | return t; |
903 | |
904 | /* Error handling */ |
905 | facilities_error: |
2896f39c |
906 | g_datalist_free(t->tracefiles_by_name); |
907 | g_array_free(t->facilities_by_num, TRUE); |
54ecbf38 |
908 | open_error: |
909 | g_datalist_clear(t->tracefiles); |
910 | g_free(t); |
911 | alloc_error: |
912 | return NULL; |
913 | |
54ecbf38 |
914 | } |
915 | |
2896f39c |
916 | GQuark ltt_trace_name(LttTrace *t) |
54ecbf38 |
917 | { |
918 | return t->pathname; |
919 | } |
920 | |
921 | |
922 | /****************************************************************************** |
923 | * When we copy a trace, we want all the opening actions to happen again : |
924 | * the trace will be reopened and totally independant from the original. |
925 | * That's why we call ltt_trace_open. |
926 | *****************************************************************************/ |
927 | LttTrace *ltt_trace_copy(LttTrace *self) |
928 | { |
929 | return ltt_trace_open(self->pathname); |
930 | } |
931 | |
2896f39c |
932 | //FIXME TODO |
54ecbf38 |
933 | void ltt_trace_close(LttTrace *t) |
934 | { |
935 | unsigned int i; |
936 | LttTracefile * tf; |
937 | LttFacility * f; |
938 | |
939 | g_free(t->pathname); |
940 | |
941 | //free system_description |
942 | g_free(t->system_description->description); |
943 | g_free(t->system_description->node_name); |
944 | g_free(t->system_description->domain_name); |
945 | g_free(t->system_description->kernel_name); |
946 | g_free(t->system_description->kernel_release); |
947 | g_free(t->system_description->kernel_version); |
948 | g_free(t->system_description->machine); |
949 | g_free(t->system_description->processor); |
950 | g_free(t->system_description->hardware_platform); |
951 | g_free(t->system_description->operating_system); |
952 | g_free(t->system_description); |
953 | |
954 | //free control_tracefiles |
955 | for(i=0;i<t->control_tracefile_number;i++){ |
956 | tf = (LttTracefile*)g_ptr_array_index(t->control_tracefiles,i); |
957 | ltt_tracefile_close(tf); |
958 | } |
959 | g_ptr_array_free(t->control_tracefiles, TRUE); |
960 | |
961 | //free per_cpu_tracefiles |
962 | for(i=0;i<t->per_cpu_tracefile_number;i++){ |
963 | tf = (LttTracefile*)g_ptr_array_index(t->per_cpu_tracefiles,i); |
964 | ltt_tracefile_close(tf); |
965 | } |
966 | g_ptr_array_free(t->per_cpu_tracefiles, TRUE); |
967 | |
968 | //free facilities |
969 | for(i=0;i<t->facility_number;i++){ |
970 | f = (LttFacility*)g_ptr_array_index(t->facilities,i); |
971 | ltt_facility_close(f); |
972 | } |
973 | g_ptr_array_free(t->facilities, TRUE); |
974 | |
975 | g_free(t); |
976 | |
977 | g_blow_chunks(); |
978 | } |
979 | |
980 | |
981 | /***************************************************************************** |
982 | *Get the system description of the trace |
983 | ****************************************************************************/ |
984 | |
2896f39c |
985 | LttFacility *ltt_trace_facility_by_id(LttTrace *t, guint8 id) |
54ecbf38 |
986 | { |
2896f39c |
987 | g_assert(index < t->facilities_by_num->len); |
988 | return &g_array_index(t->facilities_by_num, LttFacility, id); |
54ecbf38 |
989 | } |
990 | |
2896f39c |
991 | /* ltt_trace_facility_get_by_name |
992 | * |
993 | * Returns the GArray of facility indexes. All the fac_ids that matches the |
994 | * requested facility name. |
995 | * |
996 | * If name is not found, returns NULL. |
997 | */ |
998 | GArray *ltt_trace_facility_get_by_name(LttTrace *t, GQuark name) |
54ecbf38 |
999 | { |
2896f39c |
1000 | return g_datalist_id_get_data(t->facilities_by_name, name); |
54ecbf38 |
1001 | } |
1002 | |
1003 | /***************************************************************************** |
1004 | * Functions to discover all the event types in the trace |
1005 | ****************************************************************************/ |
1006 | |
1007 | unsigned ltt_trace_eventtype_number(LttTrace *t) |
1008 | { |
1009 | unsigned int i; |
1010 | unsigned count = 0; |
1011 | unsigned int num = t->facility_number; |
1012 | LttFacility * f; |
1013 | |
1014 | for(i=0;i<num;i++){ |
1015 | f = (LttFacility*)g_ptr_array_index(t->facilities, i); |
1016 | count += f->event_number; |
1017 | } |
1018 | return count; |
1019 | } |
1020 | |
54ecbf38 |
1021 | LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned evId) |
1022 | { |
1023 | LttEventType *event_type; |
1024 | |
1025 | LttFacility * f; |
1026 | f = ltt_trace_facility_by_id(t,evId); |
1027 | |
1028 | if(unlikely(!f)) event_type = NULL; |
1029 | else event_type = f->events[evId - f->base_id]; |
1030 | |
1031 | return event_type; |
1032 | } |
1033 | |
2896f39c |
1034 | #if 0 |
54ecbf38 |
1035 | /***************************************************************************** |
2896f39c |
1036 | * ltt_trace_find_tracefile |
1037 | * |
1038 | * Find a tracefile by name and index in the group. |
1039 | * |
1040 | * Returns a pointer to the tracefiles, else NULL. |
54ecbf38 |
1041 | ****************************************************************************/ |
1042 | |
2896f39c |
1043 | LttTracefile *ltt_trace_find_tracefile(LttTrace *t, const gchar *name) |
54ecbf38 |
1044 | { |
54ecbf38 |
1045 | } |
2896f39c |
1046 | #endif //0 |
54ecbf38 |
1047 | |
1048 | /***************************************************************************** |
1049 | * Get the start time and end time of the trace |
1050 | ****************************************************************************/ |
1051 | |
1052 | static void ltt_tracefile_time_span_get(LttTracefile *tf, |
1053 | LttTime *start, LttTime *end) |
1054 | { |
1055 | struct ltt_block_start_header * header; |
1056 | int err; |
1057 | |
1058 | err = map_block(tf, 0); |
1059 | if(unlikely(err)) { |
1060 | g_error("Can not map block"); |
1061 | *start = { 0xFFFFFFFF, 0xFFFFFFFF }; |
1062 | } else |
1063 | *start = tf->buffer.begin.timestamp; |
1064 | |
1065 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
1066 | if(unlikely(err)) { |
1067 | g_error("Can not map block"); |
1068 | *end = { 0, 0 }; |
1069 | } else |
1070 | *end = tf->buffer.end.timestamp; |
1071 | } |
1072 | |
1073 | struct tracefile_time_span_get_args { |
1074 | LttTrace *t; |
1075 | LttTime *start; |
1076 | LttTime *end; |
1077 | }; |
1078 | |
1079 | static void group_time_span_get(GQuark name, gpointer data, gpointer user_data) |
1080 | { |
1081 | struct tracefile_time_span_get_args *args = |
1082 | (struct tracefile_time_span_get_args*)user_data; |
1083 | |
1084 | GArray *group = (GArray *)data; |
1085 | int i; |
1086 | LttTracefile *tf; |
1087 | LttTime tmp_start; |
1088 | LttTime tmp_end; |
1089 | |
1090 | for(i=0; i<group->len; i++) { |
1091 | tf = &g_array_index (group, LttTracefile, i); |
1092 | if(tf->cpu_online) { |
1093 | ltt_tracefile_time_span_get(tf, &tmp_start, &tmp_end); |
1094 | if(ltt_time_compare(*args->start, tmp_start)>0) *args->start = tmp_start; |
1095 | if(ltt_time_compare(*args->end, tmp_end)<0) *args->end = tmp_end; |
1096 | } |
1097 | } |
1098 | } |
1099 | |
1100 | void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end) |
1101 | { |
1102 | LttTime min_start = { 0xFFFFFFFF, 0xFFFFFFFF }; |
1103 | LttTime max_end = { 0, 0 }; |
1104 | struct tracefile_time_span_get_args args = { t, &min_start, &max_end }; |
1105 | |
1106 | g_datalist_foreach(t->tracefiles, &group_time_span_get, &args); |
1107 | |
1108 | if(start != NULL) *start = min_start; |
1109 | if(end != NULL) *end = max_end; |
1110 | |
1111 | } |
1112 | |
1113 | |
1114 | /***************************************************************************** |
1115 | *Get the name of a tracefile |
1116 | ****************************************************************************/ |
1117 | |
2896f39c |
1118 | GQuark ltt_tracefile_name(LttTracefile *tf) |
54ecbf38 |
1119 | { |
1120 | return tf->name; |
1121 | } |
1122 | |
1123 | /***************************************************************************** |
1124 | * Get the number of blocks in the tracefile |
1125 | ****************************************************************************/ |
1126 | |
2896f39c |
1127 | guint ltt_tracefile_block_number(LttTracefile *tf) |
54ecbf38 |
1128 | { |
1129 | return tf->block_number; |
1130 | } |
1131 | |
1132 | |
1133 | /* Seek to the first event in a tracefile that has a time equal or greater than |
1134 | * the time passed in parameter. |
1135 | * |
1136 | * If the time parameter is outside the tracefile time span, seek to the first |
1137 | * or the last event of the tracefile. |
1138 | * |
1139 | * If the time parameter is before the first event, we have to seek specially to |
1140 | * there. |
1141 | * |
1142 | * If the time is after the end of the trace, get the last event. |
1143 | * |
1144 | * Do a binary search to find the right block, then a sequential search in the |
1145 | * block to find the event. |
1146 | * |
1147 | * In the special case where the time requested fits inside a block that has no |
1148 | * event corresponding to the requested time, the first event of the next block |
1149 | * will be seeked. |
1150 | * |
1151 | * IMPORTANT NOTE : // FIXME everywhere... |
1152 | * |
1153 | * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time : |
1154 | * you will jump over an event if you do. |
1155 | * |
2896f39c |
1156 | * Return value : 0 : no error, the tf->event can be used |
1157 | * otherwise : this is an error. |
1158 | * |
54ecbf38 |
1159 | * */ |
1160 | |
2896f39c |
1161 | int ltt_tracefile_seek_time(LttTracefile *tf, LttTime time) |
54ecbf38 |
1162 | { |
2896f39c |
1163 | int ret = 0; |
54ecbf38 |
1164 | int err; |
1165 | unsigned int block_num, high, low; |
1166 | |
1167 | /* seek at the beginning of trace */ |
1168 | err = map_block(tf, 0); /* First block */ |
1169 | if(unlikely(err)) { |
1170 | g_error("Can not map block"); |
1171 | goto fail; |
1172 | } |
1173 | |
1174 | /* If the time is lower or equal the beginning of the trace, |
1175 | * go to the first event. */ |
1176 | if(ltt_time_compare(time, tf->buffer.start.timestamp) <= 0) { |
2896f39c |
1177 | ret = ltt_tracefile_read(tf) |
54ecbf38 |
1178 | goto found; /* There is either no event in the trace or the event points |
1179 | to the first event in the trace */ |
1180 | } |
1181 | |
1182 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
1183 | if(unlikely(err)) { |
1184 | g_error("Can not map block"); |
1185 | goto fail; |
1186 | } |
1187 | |
1188 | /* If the time is after the end of the trace, get the last event. */ |
1189 | if(ltt_time_compare(time, tf->buffer.end.timestamp) >= 0) { |
2896f39c |
1190 | /* While the ltt_tracefile_read doesn't return ERANGE or EPERM, |
1191 | * continue reading. |
54ecbf38 |
1192 | */ |
2896f39c |
1193 | while(1) { |
1194 | ret = ltt_tracefile_read(tf); |
1195 | if(ret == ERANGE) goto found; /* ERANGE or EPERM */ |
1196 | else if(ret) goto fail; |
1197 | } |
54ecbf38 |
1198 | } |
1199 | |
1200 | /* Binary search the block */ |
1201 | high = tf->num_blocks - 1; |
1202 | low = 0; |
1203 | |
1204 | while(1) { |
1205 | block_num = ((high-low) / 2) + low; |
1206 | |
1207 | err = map_block(tf, block_num); |
1208 | if(unlikely(err)) { |
1209 | g_error("Can not map block"); |
1210 | goto fail; |
1211 | } |
bed09760 |
1212 | if(high == low) { |
1213 | /* We cannot divide anymore : this is what would happen if the time |
1214 | * requested was exactly between two consecutive buffers'end and start |
1215 | * timestamps. This is also what would happend if we didn't deal with out |
1216 | * of span cases prior in this function. */ |
1217 | /* The event is right in the buffer! |
1218 | * (or in the next buffer first event) */ |
1219 | while(1) { |
2896f39c |
1220 | ret = ltt_tracefile_read(tf); |
1221 | if(ret == ERANGE) goto found; /* ERANGE or EPERM */ |
1222 | else if(ret) goto fail; |
1223 | |
bed09760 |
1224 | if(ltt_time_compare(time, tf->event.event_time) >= 0) |
1225 | break; |
1226 | } |
1227 | |
1228 | } if(ltt_time_compare(time, tf->buffer.start.timestamp) < 0) { |
54ecbf38 |
1229 | /* go to lower part */ |
1230 | high = block_num; |
1231 | } else if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
1232 | /* go to higher part */ |
1233 | low = block_num; |
1234 | } else {/* The event is right in the buffer! |
1235 | (or in the next buffer first event) */ |
1236 | while(1) { |
1237 | ltt_tracefile_read(tf); |
2896f39c |
1238 | if(ret == ERANGE) goto found; /* ERANGE or EPERM */ |
1239 | else if(ret) goto fail; |
1240 | |
54ecbf38 |
1241 | if(ltt_time_compare(time, tf->event.event_time) >= 0) |
1242 | break; |
1243 | } |
1244 | goto found; |
1245 | } |
1246 | } |
1247 | |
1248 | found: |
2896f39c |
1249 | return 0; |
54ecbf38 |
1250 | |
1251 | /* Error handling */ |
1252 | fail: |
1253 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
1254 | g_quark_to_string(tf->name)); |
2896f39c |
1255 | return EPERM; |
54ecbf38 |
1256 | } |
1257 | |
1258 | |
1259 | int ltt_tracefile_seek_position(LttTracefile *tf, const LttEventPosition *ep) { |
1260 | |
1261 | int err; |
1262 | |
1263 | if(ep->tracefile != tf) { |
1264 | goto fail; |
1265 | } |
1266 | |
1267 | err = map_block(tf, ep->block); |
1268 | if(unlikely(err)) { |
1269 | g_error("Can not map block"); |
1270 | goto fail; |
1271 | } |
1272 | |
1273 | tf->event.offset = ep->offset; |
1274 | |
2896f39c |
1275 | err = ltt_tracefile_read_update_event(tf); |
1276 | if(err) goto fail; |
1277 | err = ltt_tracefile_read_op(tf); |
1278 | if(err) goto fail; |
1279 | |
54ecbf38 |
1280 | return; |
1281 | |
1282 | fail: |
1283 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
1284 | g_quark_to_string(tf->name)); |
1285 | } |
1286 | |
54ecbf38 |
1287 | /* Calculate the real event time based on the buffer boundaries */ |
1288 | LttTime ltt_interpolate_time(LttTracefile *tf, LttEvent *event) |
1289 | { |
1290 | LttTime time; |
1291 | |
1292 | g_assert(t->trace->has_tsc); |
1293 | |
1294 | time = ltt_time_from_uint64( |
1295 | (guint64)tf->buffer.tsc*tf->buffer.nsecs_per_cycle); |
1296 | time = ltt_time_add(tf->buffer.begin.timestamp, time); |
1297 | |
1298 | return time; |
1299 | } |
1300 | |
54ecbf38 |
1301 | /***************************************************************************** |
1302 | *Function name |
1303 | * ltt_tracefile_read : Read the next event in the tracefile |
1304 | *Input params |
1305 | * t : tracefile |
1306 | *Return value |
54ecbf38 |
1307 | * |
2896f39c |
1308 | * Returns 0 if an event can be used in tf->event. |
1309 | * Returns ERANGE on end of trace. The event in tf->event still can be used. |
1310 | * Returns EPERM on error. |
54ecbf38 |
1311 | * |
1312 | * This function does make the tracefile event structure point to the event |
2896f39c |
1313 | * currently pointed to by the tf->event. |
1314 | * |
1315 | * Note : you must call a ltt_tracefile_seek to the beginning of the trace to |
1316 | * reinitialize it after an error if you want results to be coherent. |
1317 | * It would be the case if a end of trace last buffer has no event : the end |
1318 | * of trace wouldn't be returned, but an error. |
1319 | * We make the assumption there is at least one event per buffer. |
54ecbf38 |
1320 | ****************************************************************************/ |
1321 | |
2896f39c |
1322 | int ltt_tracefile_read(LttTracefile *tf) |
1323 | { |
1324 | int err; |
1325 | |
1326 | err = ltt_tracefile_read_seek(tf); |
1327 | if(err) return err; |
1328 | err = ltt_tracefile_read_update_event(tf); |
1329 | if(err) return err; |
1330 | err = ltt_tracefile_read_op(tf); |
1331 | if(err) return err; |
1332 | |
1333 | return 0; |
1334 | } |
1335 | |
1336 | int ltt_tracefile_read_seek(LttTracefile *tf) |
1337 | { |
1338 | int err; |
1339 | |
1340 | /* Get next buffer until we finally have an event, or end of trace */ |
1341 | while(1) { |
1342 | err = ltt_seek_next_event(tf); |
1343 | if(unlikely(err == ENOPROTOOPT)) { |
1344 | return EPERM; |
1345 | } |
1346 | |
1347 | /* Are we at the end of the buffer ? */ |
1348 | if(err == ERANGE) { |
1349 | if(unlikely(tf->buffer.index == tf->num_blocks-1)){ /* end of trace ? */ |
1350 | return ERANGE; |
1351 | } else { |
1352 | /* get next block */ |
1353 | err = map_block(tf, tf->buffer.index + 1); |
1354 | if(unlikely(err)) { |
1355 | g_error("Can not map block"); |
1356 | return EPERM; |
1357 | } |
1358 | } |
1359 | } else break; /* We found an event ! */ |
1360 | } |
1361 | |
1362 | return 0; |
1363 | } |
1364 | |
1365 | |
1366 | /* do specific operation on events */ |
1367 | int ltt_tracefile_read_op(LttTracefile *tf) |
54ecbf38 |
1368 | { |
1369 | int err; |
1370 | LttFacility *f; |
1371 | void * pos; |
2896f39c |
1372 | LttEvent *event; |
54ecbf38 |
1373 | |
2896f39c |
1374 | event = &tf->event; |
54ecbf38 |
1375 | |
2896f39c |
1376 | /* do event specific operation */ |
1377 | |
1378 | /* do something if its an heartbeat event : increment the heartbeat count */ |
1379 | if(event->facility_id != 0) { /* except core */ |
1380 | f = (LttFacility*)g_ptr_array_index(tf->trace->facilities, |
1381 | event->facility_id); |
1382 | g_assert(f != NULL); |
ea45889a |
1383 | |
2896f39c |
1384 | if(unlikely(ltt_facility_name(f) |
1385 | != LTT_FACILITY_NAME_HEARTBEAT)) { |
1386 | LttEventType *et = ltt_facility_eventtype_get_by_name(f, |
1387 | LTT_EVENT_NAME_HEARTBEAT); |
1388 | if(et->id == event->event_id) |
1389 | t->cur_heart_beat_number++; |
54ecbf38 |
1390 | } |
1391 | } |
2896f39c |
1392 | |
1393 | return 0; |
1394 | } |
1395 | |
1396 | |
1397 | /* same as ltt_tracefile_read, but does not seek to the next event nor call |
1398 | * event specific operation. */ |
1399 | int ltt_tracefile_read_update_event(LttTracefile *tf) |
1400 | { |
1401 | int err; |
1402 | LttFacility *f; |
1403 | void * pos; |
1404 | LttEvent *event; |
1405 | |
1406 | event = &tf->event; |
1407 | pos = event->offset; |
54ecbf38 |
1408 | |
1409 | /* Read event header */ |
1410 | |
1411 | //TODO align |
1412 | |
1413 | if(tf->trace->has_tsc) { |
1414 | event->time.timestamp = ltt_get_uint32(LTT_GET_BO(t), |
2896f39c |
1415 | pos); |
54ecbf38 |
1416 | /* 32 bits -> 64 bits tsc */ |
2896f39c |
1417 | /* note : still works for seek and non seek cases. */ |
54ecbf38 |
1418 | if(event->time.timestamp < (0xFFFFFFFFULL&tf->buffer.tsc)) { |
1419 | tf->buffer.tsc = ((tf->buffer.tsc&0xFFFFFFFF00000000ULL) |
1420 | + 0x100000000ULL) |
1421 | | (guint64)event->time.timestamp; |
54ecbf38 |
1422 | } else { |
1423 | /* no overflow */ |
1424 | tf->buffer.tsc = (tf->buffer.tsc&0xFFFFFFFF00000000ULL) |
1425 | | (guint64)event->time.timestamp; |
1426 | } |
2896f39c |
1427 | |
1428 | event->event_time = ltt_interpolate_time(tf, event); |
1429 | |
54ecbf38 |
1430 | pos += sizeof(uint32); |
1431 | } else { |
1432 | event->time.delta = ltt_get_uint32(LTT_GET_BO(tf), |
2896f39c |
1433 | pos); |
54ecbf38 |
1434 | tf->buffer.tsc = 0; |
1435 | |
1436 | event->event_time = ltt_time_add(tf->buffer.begin.timestamp, |
1437 | event->time_delta); |
1438 | pos += sizeof(uint32); |
1439 | } |
1440 | |
1441 | event->facility_id = ltt_get_uint8(LTT_GET_BO(tf), |
1442 | tf->cur_event_pos); |
1443 | pos += sizeof(uint8); |
1444 | |
1445 | event->event_id = ltt_get_uint8(LTT_GET_BO(tf), |
1446 | tf->cur_event_pos); |
1447 | pos += sizeof(uint8); |
1448 | |
1449 | event->data = tf->cur_event_pos + EVENT_HEADER_SIZE; |
1450 | |
1451 | event->data = pos; |
1452 | |
2896f39c |
1453 | return 0; |
54ecbf38 |
1454 | } |
1455 | |
54ecbf38 |
1456 | |
1457 | /**************************************************************************** |
1458 | *Function name |
1459 | * map_block : map a block from the file |
1460 | *Input Params |
1461 | * lttdes : ltt trace file |
1462 | * whichBlock : the block which will be read |
1463 | *return value |
1464 | * 0 : success |
1465 | * EINVAL : lseek fail |
1466 | * EIO : can not read from the file |
1467 | ****************************************************************************/ |
1468 | |
1469 | static int map_block(LttTracefile * tf, int block_num) |
1470 | { |
1471 | struct ltt_block_start_header *header; |
1472 | |
1473 | g_assert(block_num < tf->num_blocks); |
1474 | |
1475 | if(tf->buffer.head != NULL) |
1476 | munmap(tf->buffer.head, tf->buf_size); |
1477 | |
1478 | /* Multiple of pages aligned head */ |
1479 | tf->buffer.head = mmap(0, tf->block_size, PROT_READ, tf->fd, |
1480 | (off_t)tf->block_size * (off_t)block_num); |
1481 | |
1482 | if(tf->buffer.head == NULL) { |
1483 | perror("Error in allocating memory for buffer of tracefile %s\n", fileName); |
1484 | goto map_error; |
1485 | } |
1486 | g_assert(tf->buffer.head & (8-1) == 0); // make sure it's aligned. |
1487 | |
1488 | |
1489 | tf->buffer.index = block_num; |
1490 | |
1491 | header = (struct ltt_block_start_header*)tf->buffer.head; |
1492 | |
1493 | tf->buffer.begin.timestamp = ltt_get_uint64(LTT_GET_BO(tf), |
1494 | header->begin.timestamp) |
1495 | * NSEC_PER_USEC; |
1496 | tf->buffer.begin.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
1497 | header->begin.cycle_count); |
1498 | tf->buffer.end.timestamp = ltt_get_uint64(LTT_GET_BO(tf), |
1499 | header->end.timestamp) |
1500 | * NSEC_PER_USEC; |
1501 | tf->buffer.end.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
1502 | header->end.cycle_count); |
1503 | tf->buffer.lost_size = ltt_get_uint32(LTT_GET_BO(tf), |
1504 | header->lost_size); |
1505 | |
1506 | tf->buffer.tsc = tf->buffer.begin.cycle_count; |
1507 | |
1508 | /* FIXME |
1509 | * eventually support variable buffer size : will need a partial pre-read of |
1510 | * the headers to create an index when we open the trace... eventually. */ |
1511 | g_assert(tf->block_size == ltt_get_uint32(header->buf_size)); |
1512 | |
1513 | /* Now that the buffer is mapped, calculate the time interpolation for the |
1514 | * block. */ |
1515 | |
1516 | tf->buffer.nsecs_per_cycle = calc_nsecs_per_cycle(&tf->buffer); |
1517 | |
1518 | /* Make the current event point to the beginning of the buffer : |
1519 | * it means that the event read must get the first event. */ |
1520 | tf->event.tracefile = tf; |
1521 | tf->event.block = block_num; |
1522 | tf->event.offset = tf->buffer.head; |
1523 | |
1524 | return 0; |
1525 | |
1526 | map_error: |
1527 | return -errno; |
1528 | |
1529 | } |
1530 | |
54ecbf38 |
1531 | /* Take the tf current event offset and use the event facility id and event id |
1532 | * to figure out where is the next event offset. |
1533 | * |
1534 | * This is an internal function not aiming at being used elsewhere : it will |
1535 | * not jump over the current block limits. Please consider using |
1536 | * ltt_tracefile_read to do this. |
1537 | * |
1538 | * Returns 0 on success |
1539 | * ERANGE if we are at the end of the buffer. |
2896f39c |
1540 | * ENOPROTOOPT if an error occured when getting the current event size. |
54ecbf38 |
1541 | */ |
1542 | static int ltt_seek_next_event(LttTracefile *tf) |
1543 | { |
2896f39c |
1544 | int ret = 0; |
54ecbf38 |
1545 | void *pos; |
1546 | |
1547 | /* seek over the buffer header if we are at the buffer start */ |
1548 | if(tf->event.offset == tf->buffer.head) { |
1549 | tf->event.offset += sizeof(struct ltt_block_start_header); |
1550 | goto found; |
1551 | } |
1552 | |
2896f39c |
1553 | |
1554 | if(tf->event.offset == tf->buffer.head + tf->buffer.lost_size) { |
1555 | ret = ERANGE; |
1556 | goto found; |
1557 | } |
54ecbf38 |
1558 | |
1559 | pos = tf->event.data; |
1560 | |
2896f39c |
1561 | /* FIXME : do this function. Remember to hardcode the sizes of heartbeat and |
1562 | * core */ |
54ecbf38 |
1563 | pos += ltt_facility_get_event_size(tf->event.facility_id, tf->event.event_id); |
2896f39c |
1564 | on error : goto error; |
54ecbf38 |
1565 | |
1566 | tf->event.offset = pos; |
1567 | |
1568 | found: |
2896f39c |
1569 | return ret; |
54ecbf38 |
1570 | |
1571 | error: |
1572 | g_error("Error in ltt_seek_next_event for tracefile %s", |
1573 | g_quark_to_string(tf->name)); |
2896f39c |
1574 | return ENOPROTOOPT; |
54ecbf38 |
1575 | } |
1576 | |
1577 | |
1578 | /***************************************************************************** |
1579 | *Function name |
1580 | * calc_nsecs_per_cycle : calculate nsecs per cycle for current block |
1581 | *Input Params |
1582 | * t : tracefile |
1583 | ****************************************************************************/ |
1584 | |
1585 | static double calc_nsecs_per_cycle(LttTracefile * t) |
1586 | { |
1587 | LttTime lBufTotalTime; /* Total time for this buffer */ |
1588 | double lBufTotalNSec; /* Total time for this buffer in nsecs */ |
1589 | LttCycleCount lBufTotalCycle;/* Total cycles for this buffer */ |
1590 | |
1591 | /* Calculate the total time for this buffer */ |
1592 | lBufTotalTime = ltt_time_sub( |
1593 | ltt_get_time(t->buffer.end.timestamp), |
1594 | ltt_get_time(t->buffer.begin.timestamp)); |
1595 | |
1596 | /* Calculate the total cycles for this bufffer */ |
1597 | lBufTotalCycle = t->buffer.end.cycle_count; |
1598 | lBufTotalCycle -= t->buffer.start.cycle_count; |
1599 | |
1600 | /* Convert the total time to double */ |
1601 | lBufTotalNSec = ltt_time_to_double(lBufTotalTime); |
1602 | |
1603 | return lBufTotalNSec / (double)lBufTotalCycle; |
1604 | |
1605 | } |
1606 | |
1607 | /***************************************************************************** |
1608 | *Function name |
1609 | * setFieldsOffset : set offset of the fields |
1610 | *Input params |
1611 | * tracefile : opened trace file |
1612 | * evT : the event type |
1613 | * evD : event data, it may be NULL |
1614 | ****************************************************************************/ |
1615 | |
1616 | void setFieldsOffset(LttTracefile *tf,LttEventType *evT,void *evD,LttTrace* t) |
1617 | { |
1618 | LttField * rootFld = evT->root_field; |
1619 | // rootFld->base_address = evD; |
1620 | |
1621 | if(likely(rootFld)) |
1622 | rootFld->field_size = getFieldtypeSize(tf, evT, 0,0,rootFld, evD,t); |
1623 | } |
1624 | |
1625 | /***************************************************************************** |
1626 | *Function name |
1627 | * getFieldtypeSize: get the size of the field type (primitive type) |
1628 | *Input params |
1629 | * tracefile : opened trace file |
1630 | * evT : event type |
1631 | * offsetRoot : offset from the root |
1632 | * offsetParent : offset from the parrent |
1633 | * fld : field |
1634 | * evD : event data, it may be NULL |
1635 | *Return value |
1636 | * int : size of the field |
1637 | ****************************************************************************/ |
1638 | |
1639 | static inline gint getFieldtypeSize(LttTracefile * t, |
1640 | LttEventType * evT, gint offsetRoot, |
1641 | gint offsetParent, LttField * fld, void *evD, LttTrace *trace) |
1642 | { |
1643 | gint size, size1, element_number, i, offset1, offset2; |
1644 | LttType * type = fld->field_type; |
1645 | |
1646 | if(unlikely(t && evT->latest_block==t->which_block && |
1647 | evT->latest_event==t->which_event)){ |
1648 | size = fld->field_size; |
1649 | goto end_getFieldtypeSize; |
1650 | } else { |
1651 | /* This likely has been tested with gcov : half of them.. */ |
1652 | if(unlikely(fld->field_fixed == 1)){ |
1653 | /* tested : none */ |
1654 | if(unlikely(fld == evT->root_field)) { |
1655 | size = fld->field_size; |
1656 | goto end_getFieldtypeSize; |
1657 | } |
1658 | } |
1659 | |
1660 | /* From gcov profiling : half string, half struct, can we gain something |
1661 | * from that ? (Mathieu) */ |
1662 | switch(type->type_class) { |
1663 | case LTT_ARRAY: |
1664 | element_number = (int) type->element_number; |
1665 | if(fld->field_fixed == -1){ |
1666 | size = getFieldtypeSize(t, evT, offsetRoot, |
1667 | 0,fld->child[0], NULL, trace); |
1668 | if(size == 0){ //has string or sequence |
1669 | fld->field_fixed = 0; |
1670 | }else{ |
1671 | fld->field_fixed = 1; |
1672 | size *= element_number; |
1673 | } |
1674 | }else if(fld->field_fixed == 0){// has string or sequence |
1675 | size = 0; |
1676 | for(i=0;i<element_number;i++){ |
1677 | size += getFieldtypeSize(t, evT, offsetRoot+size,size, |
1678 | fld->child[0], evD+size, trace); |
1679 | } |
1680 | }else size = fld->field_size; |
1681 | if(unlikely(!evD)){ |
1682 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
1683 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
1684 | } |
1685 | |
1686 | break; |
1687 | |
1688 | case LTT_SEQUENCE: |
1689 | size1 = (int) ltt_type_size(trace, type); |
1690 | if(fld->field_fixed == -1){ |
1691 | fld->sequ_number_size = size1; |
1692 | fld->field_fixed = 0; |
1693 | size = getFieldtypeSize(t, evT, offsetRoot, |
1694 | 0,fld->child[0], NULL, trace); |
1695 | fld->element_size = size; |
1696 | }else{//0: sequence |
1697 | element_number = getIntNumber(t->trace->reverse_byte_order,size1,evD); |
1698 | type->element_number = element_number; |
1699 | if(fld->element_size > 0){ |
1700 | size = element_number * fld->element_size; |
1701 | }else{//sequence has string or sequence |
1702 | size = 0; |
1703 | for(i=0;i<element_number;i++){ |
1704 | size += getFieldtypeSize(t, evT, offsetRoot+size+size1,size+size1, |
1705 | fld->child[0], evD+size+size1, trace); |
1706 | } |
1707 | } |
1708 | size += size1; |
1709 | } |
1710 | if(unlikely(!evD)){ |
1711 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
1712 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
1713 | } |
1714 | |
1715 | break; |
1716 | |
1717 | case LTT_STRING: |
1718 | size = 0; |
1719 | if(fld->field_fixed == -1){ |
1720 | fld->field_fixed = 0; |
1721 | }else{//0: string |
1722 | /* Hope my implementation is faster than strlen (Mathieu) */ |
1723 | char *ptr=(char*)evD; |
1724 | size = 1; |
1725 | /* from gcov : many many strings are empty, make it the common case.*/ |
1726 | while(unlikely(*ptr != '\0')) { size++; ptr++; } |
1727 | //size = ptr - (char*)evD + 1; //include end : '\0' |
1728 | } |
1729 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
1730 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
1731 | |
1732 | break; |
1733 | |
1734 | case LTT_STRUCT: |
1735 | element_number = (int) type->element_number; |
1736 | size = 0; |
1737 | /* tested with gcov */ |
1738 | if(unlikely(fld->field_fixed == -1)){ |
1739 | offset1 = offsetRoot; |
1740 | offset2 = 0; |
1741 | for(i=0;i<element_number;i++){ |
1742 | size1=getFieldtypeSize(t, evT,offset1,offset2, |
1743 | fld->child[i], NULL, trace); |
1744 | if(likely(size1 > 0 && size >= 0)){ |
1745 | size += size1; |
1746 | if(likely(offset1 >= 0)) offset1 += size1; |
1747 | offset2 += size1; |
1748 | }else{ |
1749 | size = -1; |
1750 | offset1 = -1; |
1751 | offset2 = -1; |
1752 | } |
1753 | } |
1754 | if(unlikely(size == -1)){ |
1755 | fld->field_fixed = 0; |
1756 | size = 0; |
1757 | }else fld->field_fixed = 1; |
1758 | }else if(likely(fld->field_fixed == 0)){ |
1759 | offset1 = offsetRoot; |
1760 | offset2 = 0; |
1761 | for(i=0;unlikely(i<element_number);i++){ |
1762 | size=getFieldtypeSize(t,evT,offset1,offset2, |
1763 | fld->child[i],evD+offset2, trace); |
1764 | offset1 += size; |
1765 | offset2 += size; |
1766 | } |
1767 | size = offset2; |
1768 | }else size = fld->field_size; |
1769 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
1770 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
1771 | break; |
1772 | |
1773 | default: |
1774 | if(unlikely(fld->field_fixed == -1)){ |
1775 | size = (int) ltt_type_size(trace, type); |
1776 | fld->field_fixed = 1; |
1777 | }else size = fld->field_size; |
1778 | if(unlikely(!evD)){ |
1779 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
1780 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
1781 | } |
1782 | break; |
1783 | } |
1784 | } |
1785 | |
1786 | fld->offset_root = offsetRoot; |
1787 | fld->offset_parent = offsetParent; |
1788 | fld->field_size = size; |
1789 | |
1790 | end_getFieldtypeSize: |
1791 | |
1792 | return size; |
1793 | } |
1794 | |
1795 | |
1796 | /***************************************************************************** |
1797 | *Function name |
1798 | * getIntNumber : get an integer number |
1799 | *Input params |
1800 | * size : the size of the integer |
1801 | * evD : the event data |
1802 | *Return value |
1803 | * gint64 : a 64 bits integer |
1804 | ****************************************************************************/ |
1805 | |
1806 | gint64 getIntNumber(gboolean reverse_byte_order, int size, void *evD) |
1807 | { |
1808 | gint64 i; |
1809 | |
1810 | switch(size) { |
1811 | case 1: i = *((gint8*)evD); break; |
1812 | case 2: i = ltt_get_int16(reverse_byte_order, evD); break; |
1813 | case 4: i = ltt_get_int32(reverse_byte_order, evD); break; |
1814 | case 8: i = ltt_get_int64(reverse_byte_order, evD); break; |
1815 | default: i = ltt_get_int64(reverse_byte_order, evD); |
1816 | g_critical("getIntNumber : integer size %d unknown", size); |
1817 | break; |
1818 | } |
1819 | |
1820 | return i; |
1821 | } |
54ecbf38 |
1822 | |
54ecbf38 |
1823 | /* get the node name of the system */ |
1824 | |
1825 | char * ltt_trace_system_description_node_name (LttSystemDescription * s) |
1826 | { |
1827 | return s->node_name; |
1828 | } |
1829 | |
1830 | |
1831 | /* get the domain name of the system */ |
1832 | |
1833 | char * ltt_trace_system_description_domain_name (LttSystemDescription * s) |
1834 | { |
1835 | return s->domain_name; |
1836 | } |
1837 | |
1838 | |
1839 | /* get the description of the system */ |
1840 | |
1841 | char * ltt_trace_system_description_description (LttSystemDescription * s) |
1842 | { |
1843 | return s->description; |
1844 | } |
1845 | |
1846 | |
1847 | /* get the start time of the trace */ |
1848 | |
1849 | LttTime ltt_trace_system_description_trace_start_time(LttSystemDescription *s) |
1850 | { |
1851 | return s->trace_start; |
1852 | } |
1853 | |
1854 | |
1855 | LttTracefile *ltt_tracefile_new() |
1856 | { |
1857 | return g_new(LttTracefile, 1); |
1858 | } |
1859 | |
1860 | void ltt_tracefile_destroy(LttTracefile *tf) |
1861 | { |
1862 | g_free(tf); |
1863 | } |
1864 | |
1865 | void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src) |
1866 | { |
1867 | *dest = *src; |
1868 | } |
1869 | |
1870 | /* Before library loading... */ |
1871 | |
1872 | static void __attribute__((constructor)) init(void) |
1873 | { |
1874 | LTT_FACILITY_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); |
1875 | LTT_EVENT_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); |
1876 | |
1877 | LTT_TRACEFILE_NAME_FACILITIES = g_quark_from_string("control/facilities"); |
1878 | } |
1879 | |