449cb9d7 |
1 | /* This file is part of the Linux Trace Toolkit viewer |
3aee1200 |
2 | * Copyright (C) 2005 Mathieu Desnoyers |
449cb9d7 |
3 | * |
3aee1200 |
4 | * Complete rewrite from the original version made by XangXiu Yang. |
5 | * |
449cb9d7 |
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 | |
4e4d11b3 |
21 | #ifdef HAVE_CONFIG_H |
22 | #include <config.h> |
23 | #endif |
24 | |
6cd62ccf |
25 | #include <stdio.h> |
26 | #include <fcntl.h> |
8d1e6362 |
27 | #include <string.h> |
28 | #include <dirent.h> |
6cd62ccf |
29 | #include <sys/stat.h> |
30 | #include <sys/types.h> |
8d1e6362 |
31 | #include <errno.h> |
32 | #include <unistd.h> |
42db9bf1 |
33 | #include <math.h> |
cdf90f40 |
34 | #include <glib.h> |
3aee1200 |
35 | #include <malloc.h> |
36 | #include <sys/mman.h> |
6cd62ccf |
37 | |
ef35d837 |
38 | // For realpath |
39 | #include <limits.h> |
40 | #include <stdlib.h> |
41 | |
42 | |
6cd62ccf |
43 | #include "parser.h" |
a5dcde2f |
44 | #include <ltt/ltt.h> |
45 | #include "ltt-private.h" |
963b5f2d |
46 | #include <ltt/trace.h> |
a5dcde2f |
47 | #include <ltt/facility.h> |
c02ea99f |
48 | #include <ltt/event.h> |
8d1e6362 |
49 | #include <ltt/type.h> |
1a2ceb63 |
50 | #include <ltt/ltt-types.h> |
6cd62ccf |
51 | |
3aee1200 |
52 | |
53 | /* Facility names used in this file */ |
54 | |
55 | GQuark LTT_FACILITY_NAME_HEARTBEAT, |
56 | LTT_EVENT_NAME_HEARTBEAT; |
57 | GQuark LTT_TRACEFILE_NAME_FACILITIES; |
58 | |
86005ded |
59 | #ifndef g_open |
60 | #define g_open open |
61 | #endif |
62 | |
63 | |
51b5991e |
64 | #define __UNUSED__ __attribute__((__unused__)) |
6cd62ccf |
65 | |
a1062ddd |
66 | #define g_info(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_INFO, format) |
3aee1200 |
67 | |
68 | #ifndef g_debug |
a1062ddd |
69 | #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format) |
3aee1200 |
70 | #endif |
a1062ddd |
71 | |
45e14832 |
72 | #define g_close close |
8959a0c8 |
73 | |
b77d1b57 |
74 | /* Those macros must be called from within a function where page_size is a known |
75 | * variable */ |
76 | #define PAGE_MASK (~(page_size-1)) |
77 | #define PAGE_ALIGN(addr) (((addr)+page_size-1)&PAGE_MASK) |
78 | |
8959a0c8 |
79 | /* obtain the time of an event */ |
80 | |
81 | static inline LttTime getEventTime(LttTracefile * tf); |
82 | |
83 | |
6cd62ccf |
84 | /* set the offset of the fields belonging to the event, |
85 | need the information of the archecture */ |
3aee1200 |
86 | void set_fields_offsets(LttTracefile *tf, LttEventType *event_type); |
eed2ef37 |
87 | //size_t get_fields_offsets(LttTracefile *tf, LttEventType *event_type, void *data); |
6cd62ccf |
88 | |
3aee1200 |
89 | /* get the size of the field type according to |
90 | * The facility size information. */ |
91 | static inline void preset_field_type_size(LttTracefile *tf, |
92 | LttEventType *event_type, |
93 | off_t offset_root, off_t offset_parent, |
94 | enum field_status *fixed_root, enum field_status *fixed_parent, |
95 | LttField *field); |
6cd62ccf |
96 | |
3aee1200 |
97 | /* map a fixed size or a block information from the file (fd) */ |
98 | static gint map_block(LttTracefile * tf, guint block_num); |
99 | |
100 | /* calculate nsec per cycles for current block */ |
101 | static double calc_nsecs_per_cycle(LttTracefile * t); |
6cd62ccf |
102 | |
3aee1200 |
103 | /* go to the next event */ |
104 | static int ltt_seek_next_event(LttTracefile *tf); |
6cd62ccf |
105 | |
eed2ef37 |
106 | void ltt_update_event_size(LttTracefile *tf); |
107 | |
3aee1200 |
108 | #if 0 |
43da6a59 |
109 | /* Functions to parse system.xml file (using glib xml parser) */ |
51b5991e |
110 | static void parser_start_element (GMarkupParseContext __UNUSED__ *context, |
43da6a59 |
111 | const gchar *element_name, |
112 | const gchar **attribute_names, |
113 | const gchar **attribute_values, |
114 | gpointer user_data, |
115 | GError **error) |
116 | { |
117 | int i=0; |
118 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
119 | if(strcmp("system", element_name)){ |
2a74fbf4 |
120 | *error = g_error_new(G_MARKUP_ERROR, |
121 | G_LOG_LEVEL_WARNING, |
122 | "This is not system.xml file"); |
123 | return; |
43da6a59 |
124 | } |
125 | |
126 | while(attribute_names[i]){ |
127 | if(strcmp("node_name", attribute_names[i])==0){ |
128 | des->node_name = g_strdup(attribute_values[i]); |
129 | }else if(strcmp("domainname", attribute_names[i])==0){ |
130 | des->domain_name = g_strdup(attribute_values[i]); |
131 | }else if(strcmp("cpu", attribute_names[i])==0){ |
132 | des->nb_cpu = atoi(attribute_values[i]); |
133 | }else if(strcmp("arch_size", attribute_names[i])==0){ |
134 | if(strcmp(attribute_values[i],"LP32") == 0) des->size = LTT_LP32; |
135 | else if(strcmp(attribute_values[i],"ILP32") == 0) des->size = LTT_ILP32; |
136 | else if(strcmp(attribute_values[i],"LP64") == 0) des->size = LTT_LP64; |
137 | else if(strcmp(attribute_values[i],"ILP64") == 0) des->size = LTT_ILP64; |
138 | else if(strcmp(attribute_values[i],"UNKNOWN") == 0) des->size = LTT_UNKNOWN; |
139 | }else if(strcmp("endian", attribute_names[i])==0){ |
140 | if(strcmp(attribute_values[i],"LITTLE_ENDIAN") == 0) |
141 | des->endian = LTT_LITTLE_ENDIAN; |
142 | else if(strcmp(attribute_values[i],"BIG_ENDIAN") == 0) |
143 | des->endian = LTT_BIG_ENDIAN; |
144 | }else if(strcmp("kernel_name", attribute_names[i])==0){ |
145 | des->kernel_name = g_strdup(attribute_values[i]); |
146 | }else if(strcmp("kernel_release", attribute_names[i])==0){ |
147 | des->kernel_release = g_strdup(attribute_values[i]); |
148 | }else if(strcmp("kernel_version", attribute_names[i])==0){ |
149 | des->kernel_version = g_strdup(attribute_values[i]); |
150 | }else if(strcmp("machine", attribute_names[i])==0){ |
151 | des->machine = g_strdup(attribute_values[i]); |
152 | }else if(strcmp("processor", attribute_names[i])==0){ |
153 | des->processor = g_strdup(attribute_values[i]); |
154 | }else if(strcmp("hardware_platform", attribute_names[i])==0){ |
155 | des->hardware_platform = g_strdup(attribute_values[i]); |
156 | }else if(strcmp("operating_system", attribute_names[i])==0){ |
157 | des->operating_system = g_strdup(attribute_values[i]); |
158 | }else if(strcmp("ltt_major_version", attribute_names[i])==0){ |
159 | des->ltt_major_version = atoi(attribute_values[i]); |
160 | }else if(strcmp("ltt_minor_version", attribute_names[i])==0){ |
161 | des->ltt_minor_version = atoi(attribute_values[i]); |
162 | }else if(strcmp("ltt_block_size", attribute_names[i])==0){ |
163 | des->ltt_block_size = atoi(attribute_values[i]); |
164 | }else{ |
2a74fbf4 |
165 | *error = g_error_new(G_MARKUP_ERROR, |
166 | G_LOG_LEVEL_WARNING, |
167 | "Not a valid attribute"); |
168 | return; |
43da6a59 |
169 | } |
170 | i++; |
171 | } |
172 | } |
173 | |
51b5991e |
174 | static void parser_characters (GMarkupParseContext __UNUSED__ *context, |
43da6a59 |
175 | const gchar *text, |
51b5991e |
176 | gsize __UNUSED__ text_len, |
43da6a59 |
177 | gpointer user_data, |
51b5991e |
178 | GError __UNUSED__ **error) |
43da6a59 |
179 | { |
180 | LttSystemDescription* des = (LttSystemDescription* )user_data; |
181 | des->description = g_strdup(text); |
182 | } |
3aee1200 |
183 | #endif //0 |
77175651 |
184 | LttFacility *ltt_trace_get_facility_by_num(LttTrace *t, |
3aee1200 |
185 | guint num) |
186 | { |
187 | g_assert(num < t->facilities_by_num->len); |
188 | |
189 | return &g_array_index(t->facilities_by_num, LttFacility, num); |
190 | |
191 | } |
43da6a59 |
192 | |
193 | |
6cd62ccf |
194 | /***************************************************************************** |
195 | *Function name |
963b5f2d |
196 | * ltt_tracefile_open : open a trace file, construct a LttTracefile |
6cd62ccf |
197 | *Input params |
963b5f2d |
198 | * t : the trace containing the tracefile |
199 | * fileName : path name of the trace file |
3aee1200 |
200 | * tf : the tracefile structure |
6cd62ccf |
201 | *Return value |
3aee1200 |
202 | * : 0 for success, -1 otherwise. |
6cd62ccf |
203 | ****************************************************************************/ |
204 | |
3aee1200 |
205 | gint ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf) |
6cd62ccf |
206 | { |
963b5f2d |
207 | struct stat lTDFStat; /* Trace data file status */ |
3aee1200 |
208 | struct ltt_block_start_header *header; |
b77d1b57 |
209 | int page_size = getpagesize(); |
6cd62ccf |
210 | |
211 | //open the file |
d3d34f49 |
212 | tf->long_name = g_quark_from_string(fileName); |
963b5f2d |
213 | tf->trace = t; |
3865ea09 |
214 | tf->fd = open(fileName, O_RDONLY); |
6cd62ccf |
215 | if(tf->fd < 0){ |
2a74fbf4 |
216 | g_warning("Unable to open input data file %s\n", fileName); |
3aee1200 |
217 | goto end; |
6cd62ccf |
218 | } |
219 | |
220 | // Get the file's status |
221 | if(fstat(tf->fd, &lTDFStat) < 0){ |
2a74fbf4 |
222 | g_warning("Unable to get the status of the input data file %s\n", fileName); |
3aee1200 |
223 | goto close_file; |
6cd62ccf |
224 | } |
225 | |
226 | // Is the file large enough to contain a trace |
3aee1200 |
227 | if(lTDFStat.st_size < (off_t)(sizeof(struct ltt_block_start_header))){ |
8710c6c7 |
228 | g_print("The input data file %s does not contain a trace\n", fileName); |
3aee1200 |
229 | goto close_file; |
230 | } |
231 | |
232 | /* Temporarily map the buffer start header to get trace information */ |
233 | /* Multiple of pages aligned head */ |
b77d1b57 |
234 | tf->buffer.head = mmap(0, |
235 | PAGE_ALIGN(sizeof(struct ltt_block_start_header)), PROT_READ, |
3aee1200 |
236 | MAP_PRIVATE, tf->fd, 0); |
3865ea09 |
237 | if(tf->buffer.head == MAP_FAILED) { |
3aee1200 |
238 | perror("Error in allocating memory for buffer of tracefile"); |
239 | goto close_file; |
6cd62ccf |
240 | } |
3865ea09 |
241 | g_assert( ( (guint)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
3aee1200 |
242 | |
243 | header = (struct ltt_block_start_header*)tf->buffer.head; |
6cd62ccf |
244 | |
3aee1200 |
245 | if(header->trace.magic_number == LTT_MAGIC_NUMBER) |
246 | tf->reverse_bo = 0; |
247 | else if(header->trace.magic_number == LTT_REV_MAGIC_NUMBER) |
248 | tf->reverse_bo = 1; |
249 | else /* invalid magic number, bad tracefile ! */ |
250 | goto unmap_file; |
251 | |
6cd62ccf |
252 | //store the size of the file |
253 | tf->file_size = lTDFStat.st_size; |
b77d1b57 |
254 | tf->block_size = ltt_get_uint32(LTT_GET_BO(tf), &header->buf_size); |
3aee1200 |
255 | tf->num_blocks = tf->file_size / tf->block_size; |
6cd62ccf |
256 | |
b77d1b57 |
257 | munmap(tf->buffer.head, PAGE_ALIGN(sizeof(struct ltt_block_start_header))); |
3aee1200 |
258 | tf->buffer.head = NULL; |
6cd62ccf |
259 | |
963b5f2d |
260 | //read the first block |
3aee1200 |
261 | if(map_block(tf,0)) { |
262 | perror("Cannot map block for tracefile"); |
263 | goto close_file; |
264 | } |
265 | |
266 | return 0; |
6cd62ccf |
267 | |
3aee1200 |
268 | /* Error */ |
269 | unmap_file: |
b77d1b57 |
270 | munmap(tf->buffer.head, PAGE_ALIGN(sizeof(struct ltt_block_start_header))); |
3aee1200 |
271 | close_file: |
3865ea09 |
272 | close(tf->fd); |
3aee1200 |
273 | end: |
274 | return -1; |
6cd62ccf |
275 | } |
276 | |
d3d34f49 |
277 | LttTrace *ltt_tracefile_get_trace(LttTracefile *tf) |
278 | { |
279 | return tf->trace; |
280 | } |
281 | |
3aee1200 |
282 | #if 0 |
6cd62ccf |
283 | /***************************************************************************** |
963b5f2d |
284 | *Open control and per cpu tracefiles |
6cd62ccf |
285 | ****************************************************************************/ |
286 | |
45e14832 |
287 | void ltt_tracefile_open_cpu(LttTrace *t, gchar * tracefile_name) |
6cd62ccf |
288 | { |
963b5f2d |
289 | LttTracefile * tf; |
290 | tf = ltt_tracefile_open(t,tracefile_name); |
4a6c8e36 |
291 | if(!tf) return; |
963b5f2d |
292 | t->per_cpu_tracefile_number++; |
293 | g_ptr_array_add(t->per_cpu_tracefiles, tf); |
6cd62ccf |
294 | } |
295 | |
45e14832 |
296 | gint ltt_tracefile_open_control(LttTrace *t, gchar * control_name) |
6cd62ccf |
297 | { |
963b5f2d |
298 | LttTracefile * tf; |
c02ea99f |
299 | LttEvent ev; |
963b5f2d |
300 | LttFacility * f; |
963b5f2d |
301 | void * pos; |
302 | FacilityLoad fLoad; |
8d1e6362 |
303 | unsigned int i; |
963b5f2d |
304 | |
305 | tf = ltt_tracefile_open(t,control_name); |
2a74fbf4 |
306 | if(!tf) { |
307 | g_warning("ltt_tracefile_open_control : bad file descriptor"); |
308 | return -1; |
309 | } |
963b5f2d |
310 | t->control_tracefile_number++; |
311 | g_ptr_array_add(t->control_tracefiles,tf); |
312 | |
313 | //parse facilities tracefile to get base_id |
542ceddd |
314 | if(strcmp(&control_name[strlen(control_name)-10],"facilities") ==0){ |
963b5f2d |
315 | while(1){ |
c02ea99f |
316 | if(!ltt_tracefile_read(tf,&ev)) return 0; // end of file |
40331ba8 |
317 | |
c02ea99f |
318 | if(ev.event_id == TRACE_FACILITY_LOAD){ |
319 | pos = ev.data; |
45e14832 |
320 | fLoad.name = (gchar*)pos; |
47a166fc |
321 | fLoad.checksum = *(LttChecksum*)(pos + strlen(fLoad.name)); |
cbd41522 |
322 | fLoad.base_code = *(guint32 *)(pos + strlen(fLoad.name) + sizeof(LttChecksum)); |
963b5f2d |
323 | |
324 | for(i=0;i<t->facility_number;i++){ |
325 | f = (LttFacility*)g_ptr_array_index(t->facilities,i); |
326 | if(strcmp(f->name,fLoad.name)==0 && fLoad.checksum==f->checksum){ |
327 | f->base_id = fLoad.base_code; |
328 | break; |
329 | } |
330 | } |
2a74fbf4 |
331 | if(i==t->facility_number) { |
8d1e6362 |
332 | g_warning("Facility: %s, checksum: %u is not found", |
333 | fLoad.name,(unsigned int)fLoad.checksum); |
2a74fbf4 |
334 | return -1; |
335 | } |
c02ea99f |
336 | }else if(ev.event_id == TRACE_BLOCK_START){ |
40331ba8 |
337 | continue; |
c02ea99f |
338 | }else if(ev.event_id == TRACE_BLOCK_END){ |
40331ba8 |
339 | break; |
2a74fbf4 |
340 | }else { |
8d1e6362 |
341 | g_warning("Not valid facilities trace file"); |
2a74fbf4 |
342 | return -1; |
343 | } |
963b5f2d |
344 | } |
345 | } |
2a74fbf4 |
346 | return 0; |
6cd62ccf |
347 | } |
3aee1200 |
348 | #endif //0 |
6cd62ccf |
349 | |
350 | /***************************************************************************** |
351 | *Function name |
963b5f2d |
352 | * ltt_tracefile_close: close a trace file, |
6cd62ccf |
353 | *Input params |
963b5f2d |
354 | * t : tracefile which will be closed |
6cd62ccf |
355 | ****************************************************************************/ |
356 | |
963b5f2d |
357 | void ltt_tracefile_close(LttTracefile *t) |
6cd62ccf |
358 | { |
3aee1200 |
359 | if(t->buffer.head != NULL) |
360 | munmap(t->buffer.head, t->buf_size); |
3865ea09 |
361 | close(t->fd); |
963b5f2d |
362 | } |
6cd62ccf |
363 | |
6cd62ccf |
364 | |
963b5f2d |
365 | /***************************************************************************** |
366 | *Get system information |
367 | ****************************************************************************/ |
3aee1200 |
368 | #if 0 |
45e14832 |
369 | gint getSystemInfo(LttSystemDescription* des, gchar * pathname) |
963b5f2d |
370 | { |
45e14832 |
371 | int fd; |
372 | GIOChannel *iochan; |
373 | gchar *buf = NULL; |
374 | gsize length; |
43da6a59 |
375 | |
376 | GMarkupParseContext * context; |
2a74fbf4 |
377 | GError * error = NULL; |
43da6a59 |
378 | GMarkupParser markup_parser = |
379 | { |
380 | parser_start_element, |
8d1e6362 |
381 | NULL, |
43da6a59 |
382 | parser_characters, |
383 | NULL, /* passthrough */ |
384 | NULL /* error */ |
385 | }; |
963b5f2d |
386 | |
45e14832 |
387 | fd = g_open(pathname, O_RDONLY, 0); |
388 | if(fd == -1){ |
2a74fbf4 |
389 | g_warning("Can not open file : %s\n", pathname); |
390 | return -1; |
6cd62ccf |
391 | } |
963b5f2d |
392 | |
45e14832 |
393 | iochan = g_io_channel_unix_new(fd); |
394 | |
43da6a59 |
395 | context = g_markup_parse_context_new(&markup_parser, 0, des,NULL); |
6cd62ccf |
396 | |
45e14832 |
397 | //while(fgets(buf,DIR_NAME_SIZE, fp) != NULL){ |
398 | while(g_io_channel_read_line(iochan, &buf, &length, NULL, &error) |
399 | != G_IO_STATUS_EOF) { |
400 | |
401 | if(error != NULL) { |
402 | g_warning("Can not read xml file: \n%s\n", error->message); |
403 | g_error_free(error); |
404 | } |
405 | if(!g_markup_parse_context_parse(context, buf, length, &error)){ |
2a74fbf4 |
406 | if(error != NULL) { |
407 | g_warning("Can not parse xml file: \n%s\n", error->message); |
408 | g_error_free(error); |
409 | } |
410 | g_markup_parse_context_free(context); |
45e14832 |
411 | |
412 | g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ |
413 | if(error != NULL) { |
414 | g_warning("Can not close file: \n%s\n", error->message); |
415 | g_error_free(error); |
416 | } |
417 | |
418 | close(fd); |
2a74fbf4 |
419 | return -1; |
43da6a59 |
420 | } |
963b5f2d |
421 | } |
2a74fbf4 |
422 | g_markup_parse_context_free(context); |
45e14832 |
423 | |
424 | g_io_channel_shutdown(iochan, FALSE, &error); /* No flush */ |
425 | if(error != NULL) { |
426 | g_warning("Can not close file: \n%s\n", error->message); |
427 | g_error_free(error); |
428 | } |
429 | |
430 | g_close(fd); |
431 | |
432 | g_free(buf); |
2a74fbf4 |
433 | return 0; |
6cd62ccf |
434 | } |
3aee1200 |
435 | #endif //0 |
6cd62ccf |
436 | |
437 | /***************************************************************************** |
963b5f2d |
438 | *The following functions get facility/tracefile information |
6cd62ccf |
439 | ****************************************************************************/ |
3aee1200 |
440 | #if 0 |
45e14832 |
441 | gint getFacilityInfo(LttTrace *t, gchar* eventdefs) |
6cd62ccf |
442 | { |
45e14832 |
443 | GDir * dir; |
444 | const gchar * name; |
8d1e6362 |
445 | unsigned int i,j; |
963b5f2d |
446 | LttFacility * f; |
447 | LttEventType * et; |
45e14832 |
448 | gchar fullname[DIR_NAME_SIZE]; |
449 | GError * error = NULL; |
450 | |
451 | dir = g_dir_open(eventdefs, 0, &error); |
963b5f2d |
452 | |
45e14832 |
453 | if(error != NULL) { |
454 | g_warning("Can not open directory: %s, %s\n", eventdefs, error->message); |
455 | g_error_free(error); |
2a74fbf4 |
456 | return -1; |
457 | } |
963b5f2d |
458 | |
45e14832 |
459 | while((name = g_dir_read_name(dir)) != NULL){ |
460 | if(!g_pattern_match_simple("*.xml", name)) continue; |
461 | strcpy(fullname,eventdefs); |
462 | strcat(fullname,name); |
463 | ltt_facility_open(t,fullname); |
464 | } |
465 | g_dir_close(dir); |
963b5f2d |
466 | |
963b5f2d |
467 | for(j=0;j<t->facility_number;j++){ |
8710c6c7 |
468 | f = (LttFacility*)g_ptr_array_index(t->facilities, j); |
963b5f2d |
469 | for(i=0; i<f->event_number; i++){ |
470 | et = f->events[i]; |
40331ba8 |
471 | setFieldsOffset(NULL, et, NULL, t); |
963b5f2d |
472 | } |
473 | } |
2a74fbf4 |
474 | return 0; |
963b5f2d |
475 | } |
3aee1200 |
476 | #endif //0 |
6cd62ccf |
477 | |
963b5f2d |
478 | /***************************************************************************** |
479 | *A trace is specified as a pathname to the directory containing all the |
480 | *associated data (control tracefiles, per cpu tracefiles, event |
481 | *descriptions...). |
482 | * |
483 | *When a trace is closed, all the associated facilities, types and fields |
484 | *are released as well. |
8d1e6362 |
485 | */ |
486 | |
487 | |
488 | /**************************************************************************** |
489 | * get_absolute_pathname |
803229fa |
490 | * |
8d1e6362 |
491 | * return the unique pathname in the system |
492 | * |
ef35d837 |
493 | * MD : Fixed this function so it uses realpath, dealing well with |
494 | * forgotten cases (.. were not used correctly before). |
803229fa |
495 | * |
963b5f2d |
496 | ****************************************************************************/ |
45e14832 |
497 | void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname) |
9f797243 |
498 | { |
9f797243 |
499 | abs_pathname[0] = '\0'; |
803229fa |
500 | |
ef35d837 |
501 | if ( realpath (pathname, abs_pathname) != NULL) |
502 | return; |
503 | else |
504 | { |
8d1e6362 |
505 | /* error, return the original path unmodified */ |
ef35d837 |
506 | strcpy(abs_pathname, pathname); |
9f797243 |
507 | return; |
508 | } |
ef35d837 |
509 | return; |
9f797243 |
510 | } |
511 | |
3aee1200 |
512 | /* Search for something like : .*_.* |
513 | * |
514 | * The left side is the name, the right side is the number. |
515 | */ |
516 | |
517 | int get_tracefile_name_number(const gchar *raw_name, |
518 | GQuark *name, |
519 | guint *num) |
6cd62ccf |
520 | { |
3aee1200 |
521 | guint raw_name_len = strlen(raw_name); |
522 | gchar char_name[PATH_MAX]; |
523 | gchar *digit_begin; |
524 | int i; |
525 | int underscore_pos; |
526 | long int cpu_num; |
527 | gchar *endptr; |
528 | |
529 | for(i=raw_name_len-1;i>=0;i--) { |
530 | if(raw_name[i] == '_') break; |
531 | } |
532 | if(i==0) /* Either not found or name length is 0 */ |
533 | return -1; |
534 | underscore_pos = i; |
963b5f2d |
535 | |
3aee1200 |
536 | cpu_num = strtol(raw_name+underscore_pos+1, &endptr, 10); |
537 | |
538 | if(endptr == raw_name+underscore_pos+1) |
539 | return -1; /* No digit */ |
540 | if(cpu_num == LONG_MIN || cpu_num == LONG_MAX) |
541 | return -1; /* underflow / overflow */ |
1a2ceb63 |
542 | |
3aee1200 |
543 | strncpy(char_name, raw_name, underscore_pos); |
1a2ceb63 |
544 | |
3aee1200 |
545 | *name = g_quark_from_string(char_name); |
546 | *num = cpu_num; |
b333a76b |
547 | |
3aee1200 |
548 | return 0; |
549 | } |
963b5f2d |
550 | |
3aee1200 |
551 | |
3865ea09 |
552 | GData **ltt_trace_get_tracefiles_groups(LttTrace *trace) |
77175651 |
553 | { |
3865ea09 |
554 | return &trace->tracefiles; |
77175651 |
555 | } |
556 | |
557 | |
3865ea09 |
558 | void compute_tracefile_group(GQuark key_id, |
559 | GArray *group, |
560 | struct compute_tracefile_group_args *args) |
77175651 |
561 | { |
562 | int i; |
563 | LttTracefile *tf; |
564 | |
565 | for(i=0; i<group->len; i++) { |
566 | tf = &g_array_index (group, LttTracefile, i); |
567 | if(tf->cpu_online) |
3865ea09 |
568 | args->func(tf, args->func_args); |
77175651 |
569 | } |
570 | } |
571 | |
572 | |
3aee1200 |
573 | void ltt_tracefile_group_destroy(gpointer data) |
574 | { |
575 | GArray *group = (GArray *)data; |
576 | int i; |
577 | LttTracefile *tf; |
578 | |
579 | for(i=0; i<group->len; i++) { |
580 | tf = &g_array_index (group, LttTracefile, i); |
581 | if(tf->cpu_online) |
582 | ltt_tracefile_close(tf); |
583 | } |
584 | g_array_free(group, TRUE); |
6cd62ccf |
585 | } |
586 | |
3aee1200 |
587 | gboolean ltt_tracefile_group_has_cpu_online(gpointer data) |
49bf71b5 |
588 | { |
3aee1200 |
589 | GArray *group = (GArray *)data; |
590 | int i; |
591 | LttTracefile *tf; |
592 | |
593 | for(i=0; i<group->len; i++) { |
594 | tf = &g_array_index (group, LttTracefile, i); |
595 | if(tf->cpu_online) return 1; |
596 | } |
597 | return 0; |
49bf71b5 |
598 | } |
599 | |
600 | |
3aee1200 |
601 | /* Open each tracefile under a specific directory. Put them in a |
602 | * GData : permits to access them using their tracefile group pathname. |
603 | * i.e. access control/modules tracefile group by index : |
604 | * "control/module". |
3865ea09 |
605 | * |
606 | * relative path is the path relative to the trace root |
607 | * root path is the full path |
3aee1200 |
608 | * |
609 | * A tracefile group is simply an array where all the per cpu tracefiles sits. |
610 | */ |
611 | |
3865ea09 |
612 | static int open_tracefiles(LttTrace *trace, char *root_path, |
613 | char *relative_path) |
f7afe191 |
614 | { |
3aee1200 |
615 | DIR *dir = opendir(root_path); |
616 | struct dirent *entry; |
617 | struct stat stat_buf; |
618 | int ret; |
3865ea09 |
619 | |
3aee1200 |
620 | char path[PATH_MAX]; |
621 | int path_len; |
622 | char *path_ptr; |
623 | |
3865ea09 |
624 | int rel_path_len; |
625 | char rel_path[PATH_MAX]; |
626 | char *rel_path_ptr; |
cb03932a |
627 | LttTracefile tmp_tf; |
3865ea09 |
628 | |
3aee1200 |
629 | if(dir == NULL) { |
630 | perror(root_path); |
631 | return ENOENT; |
632 | } |
633 | |
634 | strncpy(path, root_path, PATH_MAX-1); |
635 | path_len = strlen(path); |
636 | path[path_len] = '/'; |
637 | path_len++; |
638 | path_ptr = path + path_len; |
639 | |
3865ea09 |
640 | strncpy(rel_path, relative_path, PATH_MAX-1); |
641 | rel_path_len = strlen(rel_path); |
642 | rel_path[rel_path_len] = '/'; |
643 | rel_path_len++; |
644 | rel_path_ptr = rel_path + rel_path_len; |
645 | |
3aee1200 |
646 | while((entry = readdir(dir)) != NULL) { |
647 | |
648 | if(entry->d_name[0] == '.') continue; |
649 | |
650 | strncpy(path_ptr, entry->d_name, PATH_MAX - path_len); |
3865ea09 |
651 | strncpy(rel_path_ptr, entry->d_name, PATH_MAX - rel_path_len); |
3aee1200 |
652 | |
653 | ret = stat(path, &stat_buf); |
654 | if(ret == -1) { |
655 | perror(path); |
656 | continue; |
657 | } |
658 | |
659 | g_debug("Tracefile file or directory : %s\n", path); |
660 | |
661 | if(S_ISDIR(stat_buf.st_mode)) { |
662 | |
663 | g_debug("Entering subdirectory...\n"); |
3865ea09 |
664 | ret = open_tracefiles(trace, path, rel_path); |
3aee1200 |
665 | if(ret < 0) continue; |
666 | } else if(S_ISREG(stat_buf.st_mode)) { |
3aee1200 |
667 | GQuark name; |
668 | guint num; |
669 | GArray *group; |
670 | LttTracefile *tf; |
671 | guint len; |
672 | |
3865ea09 |
673 | if(get_tracefile_name_number(rel_path, &name, &num)) |
3aee1200 |
674 | continue; /* invalid name */ |
3865ea09 |
675 | |
cb03932a |
676 | g_debug("Opening file.\n"); |
677 | if(ltt_tracefile_open(trace, path, &tmp_tf)) { |
678 | g_info("Error opening tracefile %s", path); |
679 | |
680 | continue; /* error opening the tracefile : bad magic number ? */ |
681 | } |
682 | |
3865ea09 |
683 | g_debug("Tracefile name is %s and number is %u", |
684 | g_quark_to_string(name), num); |
685 | |
cb03932a |
686 | tmp_tf.cpu_online = 1; |
687 | tmp_tf.cpu_num = num; |
d3d34f49 |
688 | tmp_tf.name = name; |
cb03932a |
689 | |
3865ea09 |
690 | group = g_datalist_id_get_data(&trace->tracefiles, name); |
3aee1200 |
691 | if(group == NULL) { |
692 | /* Elements are automatically cleared when the array is allocated. |
693 | * It makes the cpu_online variable set to 0 : cpu offline, by default. |
694 | */ |
695 | group = g_array_sized_new (FALSE, TRUE, sizeof(LttTracefile), 10); |
3865ea09 |
696 | g_datalist_id_set_data_full(&trace->tracefiles, name, |
3aee1200 |
697 | group, ltt_tracefile_group_destroy); |
698 | } |
cb03932a |
699 | |
3aee1200 |
700 | /* Add the per cpu tracefile to the named group */ |
701 | unsigned int old_len = group->len; |
702 | if(num+1 > old_len) |
703 | group = g_array_set_size(group, num+1); |
cb03932a |
704 | g_array_index (group, LttTracefile, num) = tmp_tf; |
3aee1200 |
705 | |
3aee1200 |
706 | } |
707 | } |
708 | |
709 | closedir(dir); |
710 | |
711 | return 0; |
f7afe191 |
712 | } |
713 | |
3aee1200 |
714 | /* ltt_get_facility_description |
715 | * |
716 | * Opens the trace corresponding to the requested facility (identified by fac_id |
717 | * and checksum). |
718 | * |
719 | * The name searched is : %trace root%/eventdefs/facname_checksum.xml |
720 | * |
721 | * Returns 0 on success, or 1 on failure. |
722 | */ |
723 | |
724 | static int ltt_get_facility_description(LttFacility *f, |
725 | LttTrace *t, |
726 | LttTracefile *fac_tf) |
6cd62ccf |
727 | { |
3aee1200 |
728 | char desc_file_name[PATH_MAX]; |
729 | const gchar *text; |
730 | guint textlen; |
731 | gint err; |
3aee1200 |
732 | |
733 | text = g_quark_to_string(t->pathname); |
734 | textlen = strlen(text); |
735 | |
736 | if(textlen >= PATH_MAX) goto name_error; |
737 | strcpy(desc_file_name, text); |
738 | |
739 | text = "/eventdefs/"; |
740 | textlen+=strlen(text); |
741 | if(textlen >= PATH_MAX) goto name_error; |
742 | strcat(desc_file_name, text); |
743 | |
744 | text = g_quark_to_string(f->name); |
745 | textlen+=strlen(text); |
746 | if(textlen >= PATH_MAX) goto name_error; |
747 | strcat(desc_file_name, text); |
748 | |
749 | text = "_"; |
750 | textlen+=strlen(text); |
751 | if(textlen >= PATH_MAX) goto name_error; |
752 | strcat(desc_file_name, text); |
963b5f2d |
753 | |
3aee1200 |
754 | err = snprintf(desc_file_name+textlen, PATH_MAX-textlen-1, |
755 | "%u", f->checksum); |
d2083cab |
756 | if(err < 0) goto name_error; |
3aee1200 |
757 | |
758 | textlen=strlen(desc_file_name); |
759 | |
760 | text = ".xml"; |
761 | textlen+=strlen(text); |
762 | if(textlen >= PATH_MAX) goto name_error; |
763 | strcat(desc_file_name, text); |
963b5f2d |
764 | |
3aee1200 |
765 | err = ltt_facility_open(f, t, desc_file_name); |
766 | if(err) goto facility_error; |
3aee1200 |
767 | |
768 | return 0; |
769 | |
770 | facility_error: |
771 | name_error: |
772 | return 1; |
773 | } |
774 | |
775 | static void ltt_fac_ids_destroy(gpointer data) |
776 | { |
777 | GArray *fac_ids = (GArray *)data; |
963b5f2d |
778 | |
3aee1200 |
779 | g_array_free(fac_ids, TRUE); |
780 | } |
781 | |
782 | |
783 | /* Presumes the tracefile is already seeked at the beginning. It makes sense, |
784 | * because it must be done just after the opening */ |
785 | static int ltt_process_facility_tracefile(LttTracefile *tf) |
786 | { |
787 | int err; |
788 | LttFacility *fac; |
789 | GArray *fac_ids; |
cb03932a |
790 | guint i; |
791 | LttEventType *et; |
3aee1200 |
792 | |
793 | while(1) { |
794 | err = ltt_tracefile_read_seek(tf); |
795 | if(err == EPERM) goto seek_error; |
796 | else if(err == ERANGE) break; /* End of tracefile */ |
797 | |
798 | err = ltt_tracefile_read_update_event(tf); |
799 | if(err) goto update_error; |
800 | |
801 | /* We are on a facility load/or facility unload/ or heartbeat event */ |
802 | /* The rules are : |
803 | * * facility 0 is hardcoded : this is the core facility. It will be shown |
804 | * in the facility array though, and is shown as "loaded builtin" in the |
805 | * trace. |
806 | * It contains event : |
807 | * 0 : facility load |
808 | * 1 : facility unload |
809 | * 2 : state dump facility load |
d2083cab |
810 | * 3 : heartbeat |
3aee1200 |
811 | */ |
d2083cab |
812 | if(tf->event.facility_id != LTT_FACILITY_CORE) { |
813 | /* Should only contain core facility */ |
3aee1200 |
814 | g_warning("Error in processing facility file %s, " |
815 | "should not contain facility id %u.", g_quark_to_string(tf->name), |
816 | tf->event.facility_id); |
817 | err = EPERM; |
818 | goto fac_id_error; |
d2083cab |
819 | } else { |
3aee1200 |
820 | |
821 | struct LttFacilityLoad *fac_load_data; |
b77d1b57 |
822 | struct LttStateDumpFacilityLoad *fac_state_dump_load_data; |
3aee1200 |
823 | char *fac_name; |
824 | |
825 | // FIXME align |
826 | switch((enum ltt_core_events)tf->event.event_id) { |
827 | case LTT_EVENT_FACILITY_LOAD: |
b77d1b57 |
828 | fac_name = (char*)(tf->event.data); |
d2083cab |
829 | g_debug("Doing LTT_EVENT_FACILITY_LOAD of facility %s", |
830 | fac_name); |
3aee1200 |
831 | fac_load_data = |
b77d1b57 |
832 | (struct LttFacilityLoad *) |
833 | (tf->event.data + strlen(fac_name) + 1); |
3aee1200 |
834 | fac = &g_array_index (tf->trace->facilities_by_num, LttFacility, |
835 | ltt_get_uint32(LTT_GET_BO(tf), &fac_load_data->id)); |
836 | g_assert(fac->exists == 0); |
837 | fac->name = g_quark_from_string(fac_name); |
838 | fac->checksum = ltt_get_uint32(LTT_GET_BO(tf), |
839 | &fac_load_data->checksum); |
840 | fac->id = ltt_get_uint32(LTT_GET_BO(tf), &fac_load_data->id); |
841 | fac->pointer_size = ltt_get_uint32(LTT_GET_BO(tf), |
842 | &fac_load_data->pointer_size); |
cb03932a |
843 | fac->long_size = ltt_get_uint32(LTT_GET_BO(tf), |
844 | &fac_load_data->long_size); |
eed2ef37 |
845 | fac->size_t_size = ltt_get_uint32(LTT_GET_BO(tf), |
3aee1200 |
846 | &fac_load_data->size_t_size); |
847 | fac->alignment = ltt_get_uint32(LTT_GET_BO(tf), |
848 | &fac_load_data->alignment); |
849 | |
850 | if(ltt_get_facility_description(fac, tf->trace, tf)) |
cb03932a |
851 | continue; /* error opening description */ |
3aee1200 |
852 | |
853 | fac->trace = tf->trace; |
cb03932a |
854 | |
855 | /* Preset the field offsets */ |
856 | for(i=0; i<fac->events->len; i++){ |
857 | et = &g_array_index(fac->events, LttEventType, i); |
858 | set_fields_offsets(tf, et); |
859 | } |
860 | |
3aee1200 |
861 | fac->exists = 1; |
862 | |
77175651 |
863 | fac_ids = g_datalist_id_get_data(&tf->trace->facilities_by_name, |
864 | fac->name); |
3aee1200 |
865 | if(fac_ids == NULL) { |
866 | fac_ids = g_array_sized_new (FALSE, TRUE, sizeof(guint), 1); |
867 | g_datalist_id_set_data_full(&tf->trace->facilities_by_name, |
868 | fac->name, |
869 | fac_ids, ltt_fac_ids_destroy); |
870 | } |
871 | g_array_append_val(fac_ids, fac->id); |
872 | |
873 | break; |
874 | case LTT_EVENT_FACILITY_UNLOAD: |
d2083cab |
875 | g_debug("Doing LTT_EVENT_FACILITY_UNLOAD"); |
3aee1200 |
876 | /* We don't care about unload : facilities ID are valid for the whole |
877 | * trace. They simply won't be used after the unload. */ |
878 | break; |
879 | case LTT_EVENT_STATE_DUMP_FACILITY_LOAD: |
b77d1b57 |
880 | fac_name = (char*)(tf->event.data); |
d2083cab |
881 | g_debug("Doing LTT_EVENT_STATE_DUMP_FACILITY_LOAD of facility %s", |
882 | fac_name); |
b77d1b57 |
883 | fac_state_dump_load_data = |
d2083cab |
884 | (struct LttStateDumpFacilityLoad *) |
b77d1b57 |
885 | (tf->event.data + strlen(fac_name) + 1); |
3aee1200 |
886 | fac = &g_array_index (tf->trace->facilities_by_num, LttFacility, |
b77d1b57 |
887 | ltt_get_uint32(LTT_GET_BO(tf), &fac_state_dump_load_data->id)); |
3aee1200 |
888 | g_assert(fac->exists == 0); |
889 | fac->name = g_quark_from_string(fac_name); |
890 | fac->checksum = ltt_get_uint32(LTT_GET_BO(tf), |
d2083cab |
891 | &fac_state_dump_load_data->checksum); |
892 | fac->id = fac_state_dump_load_data->id; |
3aee1200 |
893 | fac->pointer_size = ltt_get_uint32(LTT_GET_BO(tf), |
d2083cab |
894 | &fac_state_dump_load_data->pointer_size); |
cb03932a |
895 | fac->long_size = ltt_get_uint32(LTT_GET_BO(tf), |
896 | &fac_state_dump_load_data->long_size); |
eed2ef37 |
897 | fac->size_t_size = ltt_get_uint32(LTT_GET_BO(tf), |
d2083cab |
898 | &fac_state_dump_load_data->size_t_size); |
3aee1200 |
899 | fac->alignment = ltt_get_uint32(LTT_GET_BO(tf), |
d2083cab |
900 | &fac_state_dump_load_data->alignment); |
3aee1200 |
901 | if(ltt_get_facility_description(fac, tf->trace, tf)) |
cb03932a |
902 | continue; /* error opening description */ |
3aee1200 |
903 | |
904 | fac->trace = tf->trace; |
905 | |
cb03932a |
906 | /* Preset the field offsets */ |
907 | for(i=0; i<fac->events->len; i++){ |
908 | et = &g_array_index(fac->events, LttEventType, i); |
909 | set_fields_offsets(tf, et); |
910 | } |
911 | |
3aee1200 |
912 | fac->exists = 1; |
913 | |
914 | fac_ids = g_datalist_id_get_data(&tf->trace->facilities_by_name, |
915 | fac->name); |
916 | if(fac_ids == NULL) { |
917 | fac_ids = g_array_sized_new (FALSE, TRUE, sizeof(guint), 1); |
918 | g_datalist_id_set_data_full(&tf->trace->facilities_by_name, |
919 | fac->name, |
920 | fac_ids, ltt_fac_ids_destroy); |
921 | } |
922 | g_array_append_val(fac_ids, fac->id); |
923 | |
924 | break; |
925 | case LTT_EVENT_HEARTBEAT: |
926 | break; |
927 | default: |
928 | g_warning("Error in processing facility file %s, " |
929 | "unknown event id %hhu in core facility.", |
930 | g_quark_to_string(tf->name), |
931 | tf->event.event_id); |
932 | err = EPERM; |
933 | goto event_id_error; |
934 | } |
935 | } |
963b5f2d |
936 | } |
3aee1200 |
937 | return 0; |
963b5f2d |
938 | |
3aee1200 |
939 | /* Error handling */ |
940 | facility_error: |
941 | event_id_error: |
942 | fac_id_error: |
943 | update_error: |
944 | seek_error: |
d2083cab |
945 | g_warning("An error occured in facility tracefile parsing"); |
3aee1200 |
946 | return err; |
6cd62ccf |
947 | } |
948 | |
963b5f2d |
949 | |
3aee1200 |
950 | LttTrace *ltt_trace_open(const gchar *pathname) |
951 | { |
952 | gchar abs_path[PATH_MAX]; |
953 | LttTrace * t; |
954 | LttTracefile *tf; |
955 | GArray *group; |
956 | int i; |
16fcbb80 |
957 | struct ltt_block_start_header *header; |
3aee1200 |
958 | |
959 | t = g_new(LttTrace, 1); |
960 | if(!t) goto alloc_error; |
961 | |
962 | get_absolute_pathname(pathname, abs_path); |
963 | t->pathname = g_quark_from_string(abs_path); |
964 | |
965 | /* Open all the tracefiles */ |
966 | g_datalist_init(&t->tracefiles); |
3865ea09 |
967 | if(open_tracefiles(t, abs_path, "")) |
3aee1200 |
968 | goto open_error; |
969 | |
970 | /* Prepare the facilities containers : array and mapping */ |
971 | /* Array is zeroed : the "exists" field is set to false by default */ |
972 | t->facilities_by_num = g_array_sized_new (FALSE, |
973 | TRUE, sizeof(LttFacility), |
974 | NUM_FACILITIES); |
975 | t->facilities_by_num = g_array_set_size(t->facilities_by_num, NUM_FACILITIES); |
976 | |
977 | g_datalist_init(&t->facilities_by_name); |
978 | |
979 | /* Parse each trace control/facilitiesN files : get runtime fac. info */ |
980 | group = g_datalist_id_get_data(&t->tracefiles, LTT_TRACEFILE_NAME_FACILITIES); |
981 | if(group == NULL) { |
982 | g_error("Trace %s has no facility tracefile", abs_path); |
3865ea09 |
983 | g_assert(0); |
3aee1200 |
984 | goto facilities_error; |
985 | } |
986 | |
16fcbb80 |
987 | /* Get the trace information for the control/facility 0 tracefile */ |
988 | g_assert(group->len > 0); |
989 | tf = &g_array_index (group, LttTracefile, 0); |
990 | header = (struct ltt_block_start_header*)tf->buffer.head; |
991 | t->arch_type = ltt_get_uint32(LTT_GET_BO(tf), &header->trace.arch_type); |
992 | t->arch_variant = ltt_get_uint32(LTT_GET_BO(tf), &header->trace.arch_variant); |
993 | t->arch_size = header->trace.arch_size; |
994 | t->ltt_major_version = header->trace.major_version; |
995 | t->ltt_minor_version = header->trace.minor_version; |
996 | t->flight_recorder = header->trace.flight_recorder; |
997 | t->has_heartbeat = header->trace.has_heartbeat; |
998 | t->has_alignment = header->trace.has_alignment; |
999 | t->has_tsc = header->trace.has_tsc; |
1000 | |
1001 | |
3aee1200 |
1002 | for(i=0; i<group->len; i++) { |
1003 | tf = &g_array_index (group, LttTracefile, i); |
1004 | if(ltt_process_facility_tracefile(tf)) |
1005 | goto facilities_error; |
1006 | } |
3aee1200 |
1007 | |
1008 | return t; |
1009 | |
1010 | /* Error handling */ |
1011 | facilities_error: |
1012 | g_datalist_clear(&t->facilities_by_name); |
1013 | g_array_free(t->facilities_by_num, TRUE); |
1014 | open_error: |
1015 | g_datalist_clear(&t->tracefiles); |
1016 | g_free(t); |
1017 | alloc_error: |
1018 | return NULL; |
1019 | |
1020 | } |
6cd62ccf |
1021 | |
3aee1200 |
1022 | GQuark ltt_trace_name(LttTrace *t) |
6cd62ccf |
1023 | { |
3aee1200 |
1024 | return t->pathname; |
6cd62ccf |
1025 | } |
1026 | |
6cd62ccf |
1027 | |
3aee1200 |
1028 | /****************************************************************************** |
1029 | * When we copy a trace, we want all the opening actions to happen again : |
1030 | * the trace will be reopened and totally independant from the original. |
1031 | * That's why we call ltt_trace_open. |
1032 | *****************************************************************************/ |
1033 | LttTrace *ltt_trace_copy(LttTrace *self) |
963b5f2d |
1034 | { |
3aee1200 |
1035 | return ltt_trace_open(g_quark_to_string(self->pathname)); |
963b5f2d |
1036 | } |
1037 | |
3aee1200 |
1038 | void ltt_trace_close(LttTrace *t) |
6cd62ccf |
1039 | { |
cb03932a |
1040 | guint i; |
1041 | LttFacility *fac; |
1042 | |
1043 | for(i=0; i<t->facilities_by_num->len; i++) { |
1044 | fac = &g_array_index (t->facilities_by_num, LttFacility, i); |
1045 | if(fac->exists) |
1046 | ltt_facility_close(fac); |
1047 | } |
1048 | |
3aee1200 |
1049 | g_datalist_clear(&t->facilities_by_name); |
1050 | g_array_free(t->facilities_by_num, TRUE); |
1051 | g_datalist_clear(&t->tracefiles); |
1052 | g_free(t); |
6cd62ccf |
1053 | } |
1054 | |
3aee1200 |
1055 | |
6cd62ccf |
1056 | /***************************************************************************** |
3aee1200 |
1057 | *Get the system description of the trace |
6cd62ccf |
1058 | ****************************************************************************/ |
1059 | |
3aee1200 |
1060 | LttFacility *ltt_trace_facility_by_id(LttTrace *t, guint8 id) |
6cd62ccf |
1061 | { |
3aee1200 |
1062 | g_assert(id < t->facilities_by_num->len); |
1063 | return &g_array_index(t->facilities_by_num, LttFacility, id); |
1064 | } |
1065 | |
1066 | /* ltt_trace_facility_get_by_name |
1067 | * |
1068 | * Returns the GArray of facility indexes. All the fac_ids that matches the |
1069 | * requested facility name. |
1070 | * |
1071 | * If name is not found, returns NULL. |
1072 | */ |
1073 | GArray *ltt_trace_facility_get_by_name(LttTrace *t, GQuark name) |
1074 | { |
1075 | return g_datalist_id_get_data(&t->facilities_by_name, name); |
6cd62ccf |
1076 | } |
1077 | |
1078 | /***************************************************************************** |
963b5f2d |
1079 | * Functions to discover all the event types in the trace |
6cd62ccf |
1080 | ****************************************************************************/ |
1081 | |
3aee1200 |
1082 | #if 0 |
963b5f2d |
1083 | unsigned ltt_trace_eventtype_number(LttTrace *t) |
6cd62ccf |
1084 | { |
8d1e6362 |
1085 | unsigned int i; |
963b5f2d |
1086 | unsigned count = 0; |
dc1cad90 |
1087 | unsigned int num = t->facility_number; |
963b5f2d |
1088 | LttFacility * f; |
dc1cad90 |
1089 | |
1090 | for(i=0;i<num;i++){ |
963b5f2d |
1091 | f = (LttFacility*)g_ptr_array_index(t->facilities, i); |
1092 | count += f->event_number; |
1093 | } |
1094 | return count; |
6cd62ccf |
1095 | } |
3aee1200 |
1096 | #endif //0 |
6cd62ccf |
1097 | |
3aee1200 |
1098 | #if 0 |
1099 | //use an iteration on all the trace facilities, and inside iteration on all the |
1100 | //event types in each facilities instead. |
963b5f2d |
1101 | LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned evId) |
6cd62ccf |
1102 | { |
6e8c19d4 |
1103 | LttEventType *event_type; |
1104 | |
963b5f2d |
1105 | LttFacility * f; |
1106 | f = ltt_trace_facility_by_id(t,evId); |
6e8c19d4 |
1107 | |
1108 | if(unlikely(!f)) event_type = NULL; |
1109 | else event_type = f->events[evId - f->base_id]; |
1110 | |
1111 | return event_type; |
6cd62ccf |
1112 | } |
3aee1200 |
1113 | #endif //0 |
6cd62ccf |
1114 | |
3aee1200 |
1115 | #if 0 |
6cd62ccf |
1116 | /***************************************************************************** |
3aee1200 |
1117 | * ltt_trace_find_tracefile |
1118 | * |
1119 | * Find a tracefile by name and index in the group. |
1120 | * |
1121 | * Returns a pointer to the tracefiles, else NULL. |
6cd62ccf |
1122 | ****************************************************************************/ |
6cd62ccf |
1123 | |
3aee1200 |
1124 | LttTracefile *ltt_trace_find_tracefile(LttTrace *t, const gchar *name) |
6cd62ccf |
1125 | { |
6cd62ccf |
1126 | } |
3aee1200 |
1127 | #endif //0 |
6cd62ccf |
1128 | |
1129 | /***************************************************************************** |
3aee1200 |
1130 | * Get the start time and end time of the trace |
6cd62ccf |
1131 | ****************************************************************************/ |
1132 | |
3aee1200 |
1133 | static void ltt_tracefile_time_span_get(LttTracefile *tf, |
1134 | LttTime *start, LttTime *end) |
6cd62ccf |
1135 | { |
3aee1200 |
1136 | struct ltt_block_start_header * header; |
1137 | int err; |
6cd62ccf |
1138 | |
3aee1200 |
1139 | err = map_block(tf, 0); |
1140 | if(unlikely(err)) { |
1141 | g_error("Can not map block"); |
1142 | *start = ltt_time_infinite; |
1143 | } else |
1144 | *start = tf->buffer.begin.timestamp; |
1145 | |
1146 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
1147 | if(unlikely(err)) { |
1148 | g_error("Can not map block"); |
1149 | *end = ltt_time_zero; |
1150 | } else |
1151 | *end = tf->buffer.end.timestamp; |
6cd62ccf |
1152 | } |
1153 | |
3aee1200 |
1154 | struct tracefile_time_span_get_args { |
1155 | LttTrace *t; |
1156 | LttTime *start; |
1157 | LttTime *end; |
1158 | }; |
963b5f2d |
1159 | |
3aee1200 |
1160 | static void group_time_span_get(GQuark name, gpointer data, gpointer user_data) |
963b5f2d |
1161 | { |
3aee1200 |
1162 | struct tracefile_time_span_get_args *args = |
1163 | (struct tracefile_time_span_get_args*)user_data; |
1164 | |
1165 | GArray *group = (GArray *)data; |
1166 | int i; |
1167 | LttTracefile *tf; |
1168 | LttTime tmp_start; |
1169 | LttTime tmp_end; |
1170 | |
1171 | for(i=0; i<group->len; i++) { |
1172 | tf = &g_array_index (group, LttTracefile, i); |
1173 | if(tf->cpu_online) { |
1174 | ltt_tracefile_time_span_get(tf, &tmp_start, &tmp_end); |
1175 | if(ltt_time_compare(*args->start, tmp_start)>0) *args->start = tmp_start; |
1176 | if(ltt_time_compare(*args->end, tmp_end)<0) *args->end = tmp_end; |
1177 | } |
1178 | } |
6cd62ccf |
1179 | } |
1180 | |
487ad181 |
1181 | void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end) |
1182 | { |
3aee1200 |
1183 | LttTime min_start = ltt_time_infinite; |
1184 | LttTime max_end = ltt_time_zero; |
1185 | struct tracefile_time_span_get_args args = { t, &min_start, &max_end }; |
487ad181 |
1186 | |
3aee1200 |
1187 | g_datalist_foreach(&t->tracefiles, &group_time_span_get, &args); |
1188 | |
1189 | if(start != NULL) *start = min_start; |
1190 | if(end != NULL) *end = max_end; |
1191 | |
487ad181 |
1192 | } |
1193 | |
1194 | |
6cd62ccf |
1195 | /***************************************************************************** |
963b5f2d |
1196 | *Get the name of a tracefile |
6cd62ccf |
1197 | ****************************************************************************/ |
1198 | |
3aee1200 |
1199 | GQuark ltt_tracefile_name(LttTracefile *tf) |
6cd62ccf |
1200 | { |
963b5f2d |
1201 | return tf->name; |
6cd62ccf |
1202 | } |
1203 | |
d3d34f49 |
1204 | |
1205 | guint ltt_tracefile_num(LttTracefile *tf) |
1206 | { |
1207 | return tf->cpu_num; |
1208 | } |
1209 | |
80da81ad |
1210 | /***************************************************************************** |
1211 | * Get the number of blocks in the tracefile |
1212 | ****************************************************************************/ |
1213 | |
3aee1200 |
1214 | guint ltt_tracefile_block_number(LttTracefile *tf) |
80da81ad |
1215 | { |
3aee1200 |
1216 | return tf->num_blocks; |
80da81ad |
1217 | } |
1218 | |
caf7a67a |
1219 | |
3aee1200 |
1220 | /* Seek to the first event in a tracefile that has a time equal or greater than |
1221 | * the time passed in parameter. |
1222 | * |
1223 | * If the time parameter is outside the tracefile time span, seek to the first |
27304273 |
1224 | * event or if after, return ERANGE. |
3aee1200 |
1225 | * |
1226 | * If the time parameter is before the first event, we have to seek specially to |
1227 | * there. |
1228 | * |
27304273 |
1229 | * If the time is after the end of the trace, return ERANGE. |
3aee1200 |
1230 | * |
1231 | * Do a binary search to find the right block, then a sequential search in the |
1232 | * block to find the event. |
1233 | * |
1234 | * In the special case where the time requested fits inside a block that has no |
1235 | * event corresponding to the requested time, the first event of the next block |
1236 | * will be seeked. |
1237 | * |
1238 | * IMPORTANT NOTE : // FIXME everywhere... |
1239 | * |
1240 | * You MUST NOT do a ltt_tracefile_read right after a ltt_tracefile_seek_time : |
1241 | * you will jump over an event if you do. |
1242 | * |
1243 | * Return value : 0 : no error, the tf->event can be used |
27304273 |
1244 | * ERANGE : time if after the last event of the trace |
3aee1200 |
1245 | * otherwise : this is an error. |
1246 | * |
1247 | * */ |
1248 | |
1249 | int ltt_tracefile_seek_time(LttTracefile *tf, LttTime time) |
1250 | { |
1251 | int ret = 0; |
1252 | int err; |
1253 | unsigned int block_num, high, low; |
1254 | |
1255 | /* seek at the beginning of trace */ |
1256 | err = map_block(tf, 0); /* First block */ |
1257 | if(unlikely(err)) { |
1258 | g_error("Can not map block"); |
1259 | goto fail; |
caf7a67a |
1260 | } |
1261 | |
3aee1200 |
1262 | /* If the time is lower or equal the beginning of the trace, |
1263 | * go to the first event. */ |
1264 | if(ltt_time_compare(time, tf->buffer.begin.timestamp) <= 0) { |
1265 | ret = ltt_tracefile_read(tf); |
27304273 |
1266 | if(ret == ERANGE) goto range; |
1267 | else if (ret) goto fail; |
3aee1200 |
1268 | goto found; /* There is either no event in the trace or the event points |
1269 | to the first event in the trace */ |
1270 | } |
caf7a67a |
1271 | |
3aee1200 |
1272 | err = map_block(tf, tf->num_blocks - 1); /* Last block */ |
1273 | if(unlikely(err)) { |
1274 | g_error("Can not map block"); |
1275 | goto fail; |
caf7a67a |
1276 | } |
6cd62ccf |
1277 | |
27304273 |
1278 | /* If the time is after the end of the trace, return ERANGE. */ |
1279 | if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
1280 | goto range; |
3aee1200 |
1281 | } |
62e55dd6 |
1282 | |
3aee1200 |
1283 | /* Binary search the block */ |
1284 | high = tf->num_blocks - 1; |
1285 | low = 0; |
1286 | |
1287 | while(1) { |
1288 | block_num = ((high-low) / 2) + low; |
1289 | |
1290 | err = map_block(tf, block_num); |
1291 | if(unlikely(err)) { |
1292 | g_error("Can not map block"); |
1293 | goto fail; |
db55eaae |
1294 | } |
3aee1200 |
1295 | if(high == low) { |
1296 | /* We cannot divide anymore : this is what would happen if the time |
1297 | * requested was exactly between two consecutive buffers'end and start |
1298 | * timestamps. This is also what would happend if we didn't deal with out |
1299 | * of span cases prior in this function. */ |
1300 | /* The event is right in the buffer! |
1301 | * (or in the next buffer first event) */ |
1302 | while(1) { |
1303 | ret = ltt_tracefile_read(tf); |
27304273 |
1304 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ |
3aee1200 |
1305 | else if(ret) goto fail; |
1306 | |
1307 | if(ltt_time_compare(time, tf->event.event_time) >= 0) |
1308 | break; |
1309 | } |
1310 | |
27304273 |
1311 | } else if(ltt_time_compare(time, tf->buffer.begin.timestamp) < 0) { |
3aee1200 |
1312 | /* go to lower part */ |
1313 | high = block_num; |
1314 | } else if(ltt_time_compare(time, tf->buffer.end.timestamp) > 0) { |
1315 | /* go to higher part */ |
1316 | low = block_num; |
1317 | } else {/* The event is right in the buffer! |
1318 | (or in the next buffer first event) */ |
1319 | while(1) { |
27304273 |
1320 | ret = ltt_tracefile_read(tf); |
1321 | if(ret == ERANGE) goto range; /* ERANGE or EPERM */ |
3aee1200 |
1322 | else if(ret) goto fail; |
1323 | |
1324 | if(ltt_time_compare(time, tf->event.event_time) >= 0) |
1325 | break; |
6cd62ccf |
1326 | } |
3aee1200 |
1327 | goto found; |
6cd62ccf |
1328 | } |
6cd62ccf |
1329 | } |
3aee1200 |
1330 | |
1331 | found: |
1332 | return 0; |
27304273 |
1333 | range: |
1334 | return ERANGE; |
3aee1200 |
1335 | |
1336 | /* Error handling */ |
1337 | fail: |
1338 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
1339 | g_quark_to_string(tf->name)); |
1340 | return EPERM; |
6cd62ccf |
1341 | } |
1342 | |
80da81ad |
1343 | |
3aee1200 |
1344 | int ltt_tracefile_seek_position(LttTracefile *tf, const LttEventPosition *ep) { |
80da81ad |
1345 | |
3aee1200 |
1346 | int err; |
1347 | |
1348 | if(ep->tracefile != tf) { |
1349 | goto fail; |
80da81ad |
1350 | } |
1351 | |
3aee1200 |
1352 | err = map_block(tf, ep->block); |
1353 | if(unlikely(err)) { |
1354 | g_error("Can not map block"); |
1355 | goto fail; |
1356 | } |
1357 | |
1358 | tf->event.offset = ep->offset; |
18206708 |
1359 | |
3aee1200 |
1360 | err = ltt_tracefile_read_update_event(tf); |
1361 | if(err) goto fail; |
1362 | err = ltt_tracefile_read_op(tf); |
1363 | if(err) goto fail; |
80da81ad |
1364 | |
1365 | return; |
3aee1200 |
1366 | |
1367 | fail: |
1368 | g_error("ltt_tracefile_seek_time failed on tracefile %s", |
1369 | g_quark_to_string(tf->name)); |
1370 | } |
1371 | |
1372 | /* Calculate the real event time based on the buffer boundaries */ |
1373 | LttTime ltt_interpolate_time(LttTracefile *tf, LttEvent *event) |
1374 | { |
1375 | LttTime time; |
1376 | |
1377 | g_assert(tf->trace->has_tsc); |
1378 | |
1379 | time = ltt_time_from_uint64( |
50a17d39 |
1380 | (guint64)(tf->buffer.tsc - tf->buffer.begin.cycle_count) * |
1381 | tf->buffer.nsecs_per_cycle); |
3aee1200 |
1382 | time = ltt_time_add(tf->buffer.begin.timestamp, time); |
1383 | |
1384 | return time; |
80da81ad |
1385 | } |
1386 | |
eed2ef37 |
1387 | |
1388 | /* Get the current event of the tracefile : valid until the next read */ |
1389 | LttEvent *ltt_tracefile_get_event(LttTracefile *tf) |
1390 | { |
1391 | return &tf->event; |
1392 | } |
1393 | |
1394 | |
1395 | |
6cd62ccf |
1396 | /***************************************************************************** |
1397 | *Function name |
3aee1200 |
1398 | * ltt_tracefile_read : Read the next event in the tracefile |
6cd62ccf |
1399 | *Input params |
1400 | * t : tracefile |
1401 | *Return value |
3aee1200 |
1402 | * |
1403 | * Returns 0 if an event can be used in tf->event. |
1404 | * Returns ERANGE on end of trace. The event in tf->event still can be used. |
1405 | * Returns EPERM on error. |
1406 | * |
1407 | * This function does make the tracefile event structure point to the event |
1408 | * currently pointed to by the tf->event. |
1409 | * |
1410 | * Note : you must call a ltt_tracefile_seek to the beginning of the trace to |
1411 | * reinitialize it after an error if you want results to be coherent. |
1412 | * It would be the case if a end of trace last buffer has no event : the end |
1413 | * of trace wouldn't be returned, but an error. |
1414 | * We make the assumption there is at least one event per buffer. |
6cd62ccf |
1415 | ****************************************************************************/ |
1416 | |
3aee1200 |
1417 | int ltt_tracefile_read(LttTracefile *tf) |
6cd62ccf |
1418 | { |
963b5f2d |
1419 | int err; |
6cd62ccf |
1420 | |
3aee1200 |
1421 | err = ltt_tracefile_read_seek(tf); |
1422 | if(err) return err; |
1423 | err = ltt_tracefile_read_update_event(tf); |
1424 | if(err) return err; |
1425 | err = ltt_tracefile_read_op(tf); |
1426 | if(err) return err; |
1427 | |
1428 | return 0; |
1429 | } |
1430 | |
1431 | int ltt_tracefile_read_seek(LttTracefile *tf) |
1432 | { |
1433 | int err; |
1434 | |
1435 | /* Get next buffer until we finally have an event, or end of trace */ |
1436 | while(1) { |
1437 | err = ltt_seek_next_event(tf); |
1438 | if(unlikely(err == ENOPROTOOPT)) { |
1439 | return EPERM; |
bdc36259 |
1440 | } |
bdc36259 |
1441 | |
3aee1200 |
1442 | /* Are we at the end of the buffer ? */ |
1443 | if(err == ERANGE) { |
1444 | if(unlikely(tf->buffer.index == tf->num_blocks-1)){ /* end of trace ? */ |
1445 | return ERANGE; |
1446 | } else { |
1447 | /* get next block */ |
1448 | err = map_block(tf, tf->buffer.index + 1); |
1449 | if(unlikely(err)) { |
1450 | g_error("Can not map block"); |
1451 | return EPERM; |
1452 | } |
1453 | } |
1454 | } else break; /* We found an event ! */ |
1455 | } |
2dee981d |
1456 | |
3aee1200 |
1457 | return 0; |
1458 | } |
18206708 |
1459 | |
1460 | |
3aee1200 |
1461 | /* do specific operation on events */ |
1462 | int ltt_tracefile_read_op(LttTracefile *tf) |
1463 | { |
1464 | int err; |
1465 | LttFacility *f; |
1466 | void * pos; |
1467 | LttEvent *event; |
1468 | |
1469 | event = &tf->event; |
18206708 |
1470 | |
3aee1200 |
1471 | /* do event specific operation */ |
40331ba8 |
1472 | |
3aee1200 |
1473 | /* do something if its an heartbeat event : increment the heartbeat count */ |
1474 | //if(event->facility_id == LTT_FACILITY_CORE) |
1475 | // if(event->event_id == LTT_EVENT_HEARTBEAT) |
1476 | // tf->cur_heart_beat_number++; |
1477 | |
1478 | return 0; |
6cd62ccf |
1479 | } |
1480 | |
6cd62ccf |
1481 | |
3aee1200 |
1482 | /* same as ltt_tracefile_read, but does not seek to the next event nor call |
1483 | * event specific operation. */ |
1484 | int ltt_tracefile_read_update_event(LttTracefile *tf) |
6cd62ccf |
1485 | { |
3aee1200 |
1486 | int err; |
1487 | LttFacility *f; |
1488 | void * pos; |
1489 | LttEvent *event; |
1490 | |
1491 | event = &tf->event; |
eed2ef37 |
1492 | pos = tf->buffer.head + event->offset; |
3aee1200 |
1493 | |
1494 | /* Read event header */ |
1495 | |
1496 | //TODO align |
1497 | |
1498 | if(tf->trace->has_tsc) { |
16fcbb80 |
1499 | if(tf->trace->has_heartbeat) { |
1500 | event->time.timestamp = ltt_get_uint32(LTT_GET_BO(tf), |
1501 | pos); |
1502 | /* 32 bits -> 64 bits tsc */ |
1503 | /* note : still works for seek and non seek cases. */ |
1504 | if(event->time.timestamp < (0xFFFFFFFFULL&tf->buffer.tsc)) { |
1505 | tf->buffer.tsc = ((tf->buffer.tsc&0xFFFFFFFF00000000ULL) |
1506 | + 0x100000000ULL) |
1507 | | (guint64)event->time.timestamp; |
1508 | event->tsc = tf->buffer.tsc; |
1509 | } else { |
1510 | /* no overflow */ |
1511 | tf->buffer.tsc = (tf->buffer.tsc&0xFFFFFFFF00000000ULL) |
1512 | | (guint64)event->time.timestamp; |
1513 | event->tsc = tf->buffer.tsc; |
1514 | } |
1515 | pos += sizeof(guint32); |
3aee1200 |
1516 | } else { |
16fcbb80 |
1517 | event->tsc = ltt_get_uint64(LTT_GET_BO(tf), pos); |
1518 | tf->buffer.tsc = event->tsc; |
1519 | pos += sizeof(guint64); |
3aee1200 |
1520 | } |
16fcbb80 |
1521 | |
3aee1200 |
1522 | event->event_time = ltt_interpolate_time(tf, event); |
3aee1200 |
1523 | } else { |
1524 | event->time.delta.tv_sec = 0; |
1525 | event->time.delta.tv_nsec = ltt_get_uint32(LTT_GET_BO(tf), |
1526 | pos) * NSEC_PER_USEC; |
1527 | tf->buffer.tsc = 0; |
1528 | event->tsc = tf->buffer.tsc; |
1529 | |
1530 | event->event_time = ltt_time_add(tf->buffer.begin.timestamp, |
1531 | event->time.delta); |
1532 | pos += sizeof(guint32); |
1533 | } |
1534 | |
eed2ef37 |
1535 | event->facility_id = *(guint8*)pos; |
3aee1200 |
1536 | pos += sizeof(guint8); |
1537 | |
eed2ef37 |
1538 | event->event_id = *(guint8*)pos; |
3aee1200 |
1539 | pos += sizeof(guint8); |
1540 | |
b77d1b57 |
1541 | event->event_size = ltt_get_uint16(LTT_GET_BO(tf), pos); |
1542 | pos += sizeof(guint16); |
1543 | |
3aee1200 |
1544 | event->data = pos; |
1545 | |
77175651 |
1546 | /* get the data size and update the event fields with the current |
1547 | * information */ |
eed2ef37 |
1548 | ltt_update_event_size(tf); |
77175651 |
1549 | |
3aee1200 |
1550 | return 0; |
6cd62ccf |
1551 | } |
1552 | |
507915ee |
1553 | |
6cd62ccf |
1554 | /**************************************************************************** |
1555 | *Function name |
3aee1200 |
1556 | * map_block : map a block from the file |
6cd62ccf |
1557 | *Input Params |
1558 | * lttdes : ltt trace file |
1559 | * whichBlock : the block which will be read |
1560 | *return value |
1561 | * 0 : success |
1562 | * EINVAL : lseek fail |
1563 | * EIO : can not read from the file |
1564 | ****************************************************************************/ |
1565 | |
3aee1200 |
1566 | static gint map_block(LttTracefile * tf, guint block_num) |
6cd62ccf |
1567 | { |
b77d1b57 |
1568 | int page_size = getpagesize(); |
3aee1200 |
1569 | struct ltt_block_start_header *header; |
1570 | |
1571 | g_assert(block_num < tf->num_blocks); |
6cd62ccf |
1572 | |
3aee1200 |
1573 | if(tf->buffer.head != NULL) |
b77d1b57 |
1574 | munmap(tf->buffer.head, PAGE_ALIGN(tf->buf_size)); |
ac849774 |
1575 | |
3aee1200 |
1576 | /* Multiple of pages aligned head */ |
b77d1b57 |
1577 | tf->buffer.head = mmap(0, |
1578 | PAGE_ALIGN(tf->block_size), |
1579 | PROT_READ, MAP_PRIVATE, tf->fd, |
1580 | PAGE_ALIGN((off_t)tf->block_size * (off_t)block_num)); |
3aee1200 |
1581 | |
3865ea09 |
1582 | if(tf->buffer.head == MAP_FAILED) { |
3aee1200 |
1583 | perror("Error in allocating memory for buffer of tracefile"); |
3865ea09 |
1584 | g_assert(0); |
3aee1200 |
1585 | goto map_error; |
6cd62ccf |
1586 | } |
3865ea09 |
1587 | g_assert( ( (guint)tf->buffer.head&(8-1) ) == 0); // make sure it's aligned. |
3aee1200 |
1588 | |
6cd62ccf |
1589 | |
3aee1200 |
1590 | tf->buffer.index = block_num; |
1591 | |
1592 | header = (struct ltt_block_start_header*)tf->buffer.head; |
1593 | |
1594 | tf->buffer.begin.timestamp = ltt_get_time(LTT_GET_BO(tf), |
1595 | &header->begin.timestamp); |
1596 | tf->buffer.begin.timestamp.tv_nsec *= NSEC_PER_USEC; |
50a17d39 |
1597 | g_warning("block %u begin : %lu.%lu", block_num, |
1598 | tf->buffer.begin.timestamp.tv_sec, tf->buffer.begin.timestamp.tv_nsec); |
3aee1200 |
1599 | tf->buffer.begin.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
1600 | &header->begin.cycle_count); |
1601 | tf->buffer.end.timestamp = ltt_get_time(LTT_GET_BO(tf), |
1602 | &header->end.timestamp); |
1603 | tf->buffer.end.timestamp.tv_nsec *= NSEC_PER_USEC; |
50a17d39 |
1604 | g_warning("block %u end : %lu.%lu", block_num, |
1605 | tf->buffer.end.timestamp.tv_sec, tf->buffer.end.timestamp.tv_nsec); |
3aee1200 |
1606 | tf->buffer.end.cycle_count = ltt_get_uint64(LTT_GET_BO(tf), |
1607 | &header->end.cycle_count); |
1608 | tf->buffer.lost_size = ltt_get_uint32(LTT_GET_BO(tf), |
1609 | &header->lost_size); |
6cd62ccf |
1610 | |
3aee1200 |
1611 | tf->buffer.tsc = tf->buffer.begin.cycle_count; |
1612 | tf->event.tsc = tf->buffer.tsc; |
1613 | |
1614 | /* FIXME |
1615 | * eventually support variable buffer size : will need a partial pre-read of |
1616 | * the headers to create an index when we open the trace... eventually. */ |
1617 | g_assert(tf->block_size == ltt_get_uint32(LTT_GET_BO(tf), |
1618 | &header->buf_size)); |
507915ee |
1619 | |
3aee1200 |
1620 | /* Now that the buffer is mapped, calculate the time interpolation for the |
1621 | * block. */ |
1622 | |
1623 | tf->buffer.nsecs_per_cycle = calc_nsecs_per_cycle(tf); |
1624 | |
1625 | /* Make the current event point to the beginning of the buffer : |
1626 | * it means that the event read must get the first event. */ |
1627 | tf->event.tracefile = tf; |
1628 | tf->event.block = block_num; |
eed2ef37 |
1629 | tf->event.offset = 0; |
3aee1200 |
1630 | |
1631 | return 0; |
6cd62ccf |
1632 | |
3aee1200 |
1633 | map_error: |
1634 | return -errno; |
40331ba8 |
1635 | |
6cd62ccf |
1636 | } |
1637 | |
77175651 |
1638 | /* It will update the fields offsets too */ |
1639 | void ltt_update_event_size(LttTracefile *tf) |
6cd62ccf |
1640 | { |
3aee1200 |
1641 | ssize_t size = 0; |
1642 | |
1643 | /* Specific handling of core events : necessary to read the facility control |
1644 | * tracefile. */ |
77175651 |
1645 | LttFacility *f = ltt_trace_get_facility_by_num(tf->trace, |
1646 | tf->event.facility_id); |
6cd62ccf |
1647 | |
3865ea09 |
1648 | if(likely(tf->event.facility_id == LTT_FACILITY_CORE)) { |
1649 | switch((enum ltt_core_events)tf->event.event_id) { |
1650 | case LTT_EVENT_FACILITY_LOAD: |
b77d1b57 |
1651 | size = strlen((char*)tf->event.data) + 1; |
d2083cab |
1652 | g_debug("Update Event facility load of facility %s", (char*)tf->event.data); |
c4afd5d8 |
1653 | size += sizeof(struct LttFacilityLoad); |
3865ea09 |
1654 | break; |
1655 | case LTT_EVENT_FACILITY_UNLOAD: |
d2083cab |
1656 | g_debug("Update Event facility unload"); |
3865ea09 |
1657 | size = sizeof(struct LttFacilityUnload); |
1658 | break; |
1659 | case LTT_EVENT_STATE_DUMP_FACILITY_LOAD: |
b77d1b57 |
1660 | size = strlen((char*)tf->event.data) + 1; |
d2083cab |
1661 | g_debug("Update Event facility load state dump of facility %s", |
b77d1b57 |
1662 | (char*)tf->event.data); |
c4afd5d8 |
1663 | size += sizeof(struct LttStateDumpFacilityLoad); |
3865ea09 |
1664 | break; |
1665 | case LTT_EVENT_HEARTBEAT: |
d2083cab |
1666 | g_debug("Update Event heartbeat"); |
3865ea09 |
1667 | size = sizeof(TimeHeartbeat); |
1668 | break; |
1669 | default: |
1670 | g_warning("Error in getting event size : tracefile %s, " |
1671 | "unknown event id %hhu in core facility.", |
1672 | g_quark_to_string(tf->name), |
1673 | tf->event.event_id); |
1674 | goto event_id_error; |
2dee981d |
1675 | |
77175651 |
1676 | } |
3aee1200 |
1677 | } else { |
c4afd5d8 |
1678 | if(!f->exists) { |
1679 | g_error("Unknown facility %hhu (0x%hhx) in tracefile %s", |
1680 | tf->event.facility_id, |
1681 | tf->event.facility_id, |
1682 | g_quark_to_string(tf->name)); |
1683 | goto facility_error; |
1684 | } |
1685 | |
3aee1200 |
1686 | LttEventType *event_type = |
1687 | ltt_facility_eventtype_get(f, tf->event.event_id); |
c4afd5d8 |
1688 | |
1689 | if(!event_type) { |
1690 | g_error("Unknown event id %hhu in facility %s in tracefile %s", |
1691 | tf->event.event_id, |
1692 | g_quark_to_string(f->name), |
1693 | g_quark_to_string(tf->name)); |
1694 | goto event_type_error; |
1695 | } |
27304273 |
1696 | |
1697 | if(event_type->root_field) |
1698 | size = get_field_type_size(tf, event_type, |
1699 | 0, 0, event_type->root_field, tf->event.data); |
1700 | else |
1701 | size = 0; |
c4afd5d8 |
1702 | |
c4afd5d8 |
1703 | g_debug("Event root field : f.e %hhu.%hhu size %lu", tf->event.facility_id, |
1704 | tf->event.event_id, size); |
3aee1200 |
1705 | } |
3aee1200 |
1706 | |
77175651 |
1707 | tf->event.data_size = size; |
eed2ef37 |
1708 | |
b77d1b57 |
1709 | /* Check consistency between kernel and LTTV structure sizes */ |
1710 | g_assert(tf->event.data_size == tf->event.event_size); |
1711 | |
eed2ef37 |
1712 | return; |
1713 | |
c4afd5d8 |
1714 | facility_error: |
1715 | event_type_error: |
3aee1200 |
1716 | event_id_error: |
eed2ef37 |
1717 | tf->event.data_size = 0; |
6cd62ccf |
1718 | } |
1719 | |
6cd62ccf |
1720 | |
3aee1200 |
1721 | /* Take the tf current event offset and use the event facility id and event id |
1722 | * to figure out where is the next event offset. |
1723 | * |
1724 | * This is an internal function not aiming at being used elsewhere : it will |
1725 | * not jump over the current block limits. Please consider using |
1726 | * ltt_tracefile_read to do this. |
1727 | * |
1728 | * Returns 0 on success |
1729 | * ERANGE if we are at the end of the buffer. |
1730 | * ENOPROTOOPT if an error occured when getting the current event size. |
1731 | */ |
1732 | static int ltt_seek_next_event(LttTracefile *tf) |
6cd62ccf |
1733 | { |
3aee1200 |
1734 | int ret = 0; |
1735 | void *pos; |
1736 | ssize_t event_size; |
1737 | |
1738 | /* seek over the buffer header if we are at the buffer start */ |
eed2ef37 |
1739 | if(tf->event.offset == 0) { |
3aee1200 |
1740 | tf->event.offset += sizeof(struct ltt_block_start_header); |
b77d1b57 |
1741 | |
1742 | if(tf->event.offset == tf->block_size - tf->buffer.lost_size) { |
1743 | ret = ERANGE; |
1744 | } |
3aee1200 |
1745 | goto found; |
1746 | } |
6cd62ccf |
1747 | |
6cd62ccf |
1748 | |
3aee1200 |
1749 | pos = tf->event.data; |
1750 | |
77175651 |
1751 | if(tf->event.data_size < 0) goto error; |
3aee1200 |
1752 | |
77175651 |
1753 | pos += (size_t)tf->event.data_size; |
3aee1200 |
1754 | |
eed2ef37 |
1755 | tf->event.offset = pos - tf->buffer.head; |
cb03932a |
1756 | |
1757 | if(tf->event.offset == tf->block_size - tf->buffer.lost_size) { |
1758 | ret = ERANGE; |
1759 | goto found; |
1760 | } |
3aee1200 |
1761 | |
1762 | found: |
1763 | return ret; |
1764 | |
1765 | error: |
1766 | g_error("Error in ltt_seek_next_event for tracefile %s", |
1767 | g_quark_to_string(tf->name)); |
1768 | return ENOPROTOOPT; |
6cd62ccf |
1769 | } |
1770 | |
18206708 |
1771 | |
6cd62ccf |
1772 | /***************************************************************************** |
1773 | *Function name |
3aee1200 |
1774 | * calc_nsecs_per_cycle : calculate nsecs per cycle for current block |
6cd62ccf |
1775 | *Input Params |
1776 | * t : tracefile |
1777 | ****************************************************************************/ |
1778 | |
3aee1200 |
1779 | static double calc_nsecs_per_cycle(LttTracefile * tf) |
6cd62ccf |
1780 | { |
963b5f2d |
1781 | LttTime lBufTotalTime; /* Total time for this buffer */ |
887208b7 |
1782 | double lBufTotalNSec; /* Total time for this buffer in nsecs */ |
8ee1c3d5 |
1783 | LttCycleCount lBufTotalCycle;/* Total cycles for this buffer */ |
6cd62ccf |
1784 | |
1785 | /* Calculate the total time for this buffer */ |
01bb5763 |
1786 | lBufTotalTime = ltt_time_sub( |
3aee1200 |
1787 | ltt_get_time(LTT_GET_BO(tf), &tf->buffer.end.timestamp), |
1788 | ltt_get_time(LTT_GET_BO(tf), &tf->buffer.begin.timestamp)); |
6cd62ccf |
1789 | |
1790 | /* Calculate the total cycles for this bufffer */ |
3aee1200 |
1791 | lBufTotalCycle = ltt_get_uint64(LTT_GET_BO(tf), &tf->buffer.end.cycle_count); |
1792 | lBufTotalCycle -= ltt_get_uint64(LTT_GET_BO(tf), |
1793 | &tf->buffer.begin.cycle_count); |
6cd62ccf |
1794 | |
8ee1c3d5 |
1795 | /* Convert the total time to double */ |
887208b7 |
1796 | lBufTotalNSec = ltt_time_to_double(lBufTotalTime); |
6cd62ccf |
1797 | |
3aee1200 |
1798 | return lBufTotalNSec / (double)lBufTotalCycle; |
8ee1c3d5 |
1799 | |
3aee1200 |
1800 | } |
1801 | #if 0 |
1802 | void setFieldsOffset(LttTracefile *tf, LttEventType *evT,void *evD) |
1803 | { |
1804 | LttField * rootFld = evT->root_field; |
1805 | // rootFld->base_address = evD; |
2dee981d |
1806 | |
3aee1200 |
1807 | if(likely(rootFld)) |
1808 | rootFld->field_size = getFieldtypeSize(tf, evT->facility, |
1809 | evT, 0,0,rootFld, evD); |
6cd62ccf |
1810 | } |
3aee1200 |
1811 | #endif //0 |
6cd62ccf |
1812 | |
3aee1200 |
1813 | /***************************************************************************** |
6cd62ccf |
1814 | *Function name |
3aee1200 |
1815 | * set_fields_offsets : set the precomputable offset of the fields |
6cd62ccf |
1816 | *Input params |
3aee1200 |
1817 | * tracefile : opened trace file |
1818 | * event_type : the event type |
6cd62ccf |
1819 | ****************************************************************************/ |
1820 | |
3aee1200 |
1821 | void set_fields_offsets(LttTracefile *tf, LttEventType *event_type) |
6cd62ccf |
1822 | { |
3aee1200 |
1823 | LttField *field = event_type->root_field; |
1824 | enum field_status fixed_root = FIELD_FIXED, fixed_parent = FIELD_FIXED; |
1825 | |
1826 | if(likely(field)) |
1827 | preset_field_type_size(tf, event_type, 0, 0, |
1828 | &fixed_root, &fixed_parent, |
1829 | field); |
1830 | |
1831 | } |
e4eced0f |
1832 | |
bbf28e50 |
1833 | |
3aee1200 |
1834 | /***************************************************************************** |
1835 | *Function name |
1836 | * preset_field_type_size : set the fixed sizes of the field type |
1837 | *Input params |
1838 | * tf : tracefile |
1839 | * event_type : event type |
1840 | * offset_root : offset from the root |
1841 | * offset_parent : offset from the parent |
1842 | * fixed_root : Do we know a fixed offset to the root ? |
1843 | * fixed_parent : Do we know a fixed offset to the parent ? |
1844 | * field : field |
1845 | ****************************************************************************/ |
1846 | void preset_field_type_size(LttTracefile *tf, LttEventType *event_type, |
1847 | off_t offset_root, off_t offset_parent, |
1848 | enum field_status *fixed_root, enum field_status *fixed_parent, |
1849 | LttField *field) |
1850 | { |
1851 | enum field_status local_fixed_root, local_fixed_parent; |
1852 | guint i; |
1853 | LttType *type; |
dfb73233 |
1854 | |
3aee1200 |
1855 | g_assert(field->fixed_root == FIELD_UNKNOWN); |
1856 | g_assert(field->fixed_parent == FIELD_UNKNOWN); |
1857 | g_assert(field->fixed_size == FIELD_UNKNOWN); |
dfb73233 |
1858 | |
3aee1200 |
1859 | type = field->field_type; |
1860 | |
1861 | field->fixed_root = *fixed_root; |
1862 | if(field->fixed_root == FIELD_FIXED) |
1863 | field->offset_root = offset_root; |
1864 | else |
1865 | field->offset_root = 0; |
1866 | |
1867 | field->fixed_parent = *fixed_parent; |
1868 | if(field->fixed_parent == FIELD_FIXED) |
1869 | field->offset_parent = offset_parent; |
1870 | else |
1871 | field->offset_parent = 0; |
1872 | |
1873 | size_t current_root_offset; |
1874 | size_t current_offset; |
1875 | enum field_status current_child_status, final_child_status; |
1876 | size_t max_size; |
1877 | |
1878 | switch(type->type_class) { |
1879 | case LTT_INT: |
1880 | case LTT_UINT: |
1881 | case LTT_FLOAT: |
1882 | case LTT_ENUM: |
1883 | field->field_size = ltt_type_size(tf->trace, type); |
1884 | field->fixed_size = FIELD_FIXED; |
1885 | break; |
1886 | case LTT_POINTER: |
1887 | field->field_size = (off_t)event_type->facility->pointer_size; |
1888 | field->fixed_size = FIELD_FIXED; |
1889 | break; |
1890 | case LTT_LONG: |
1891 | case LTT_ULONG: |
cb03932a |
1892 | field->field_size = (off_t)event_type->facility->long_size; |
3aee1200 |
1893 | field->fixed_size = FIELD_FIXED; |
1894 | break; |
1895 | case LTT_SIZE_T: |
1896 | case LTT_SSIZE_T: |
1897 | case LTT_OFF_T: |
1898 | field->field_size = (off_t)event_type->facility->size_t_size; |
1899 | field->fixed_size = FIELD_FIXED; |
1900 | break; |
1901 | case LTT_SEQUENCE: |
1902 | local_fixed_root = FIELD_VARIABLE; |
1903 | local_fixed_parent = FIELD_VARIABLE; |
1904 | preset_field_type_size(tf, event_type, |
1905 | 0, 0, |
1906 | &local_fixed_root, &local_fixed_parent, |
1907 | field->child[0]); |
1908 | field->fixed_size = FIELD_VARIABLE; |
1909 | field->field_size = 0; |
27304273 |
1910 | *fixed_root = FIELD_VARIABLE; |
1911 | *fixed_parent = FIELD_VARIABLE; |
3aee1200 |
1912 | break; |
1913 | case LTT_STRING: |
1914 | field->fixed_size = FIELD_VARIABLE; |
1915 | field->field_size = 0; |
27304273 |
1916 | *fixed_root = FIELD_VARIABLE; |
1917 | *fixed_parent = FIELD_VARIABLE; |
3aee1200 |
1918 | break; |
1919 | case LTT_ARRAY: |
1920 | local_fixed_root = FIELD_VARIABLE; |
1921 | local_fixed_parent = FIELD_VARIABLE; |
1922 | preset_field_type_size(tf, event_type, |
1923 | 0, 0, |
1924 | &local_fixed_root, &local_fixed_parent, |
1925 | field->child[0]); |
1926 | field->fixed_size = field->child[0]->fixed_size; |
27304273 |
1927 | if(field->fixed_size == FIELD_FIXED) { |
3aee1200 |
1928 | field->field_size = type->element_number * field->child[0]->field_size; |
27304273 |
1929 | } else { |
3aee1200 |
1930 | field->field_size = 0; |
27304273 |
1931 | *fixed_root = FIELD_VARIABLE; |
1932 | *fixed_parent = FIELD_VARIABLE; |
1933 | } |
3aee1200 |
1934 | break; |
1935 | case LTT_STRUCT: |
1936 | current_root_offset = field->offset_root; |
1937 | current_offset = 0; |
1938 | current_child_status = FIELD_FIXED; |
1939 | for(i=0;i<type->element_number;i++) { |
1940 | preset_field_type_size(tf, event_type, |
1941 | current_root_offset, current_offset, |
1942 | fixed_root, ¤t_child_status, |
1943 | field->child[i]); |
1944 | if(current_child_status == FIELD_FIXED) { |
1945 | current_root_offset += field->child[i]->field_size; |
1946 | current_offset += field->child[i]->field_size; |
1947 | } else { |
1948 | current_root_offset = 0; |
1949 | current_offset = 0; |
1950 | } |
1951 | } |
1952 | if(current_child_status != FIELD_FIXED) { |
1953 | *fixed_parent = current_child_status; |
1954 | field->field_size = 0; |
1955 | field->fixed_size = current_child_status; |
1956 | } else { |
1957 | field->field_size = current_offset; |
1958 | field->fixed_size = FIELD_FIXED; |
1959 | } |
1960 | break; |
1961 | case LTT_UNION: |
1962 | current_root_offset = field->offset_root; |
1963 | current_offset = 0; |
1964 | max_size = 0; |
1965 | final_child_status = FIELD_FIXED; |
1966 | for(i=0;i<type->element_number;i++) { |
1967 | enum field_status current_root_child_status = FIELD_FIXED; |
1968 | enum field_status current_child_status = FIELD_FIXED; |
1969 | preset_field_type_size(tf, event_type, |
1970 | current_root_offset, current_offset, |
1971 | ¤t_root_child_status, ¤t_child_status, |
1972 | field->child[i]); |
1973 | if(current_child_status != FIELD_FIXED) |
1974 | final_child_status = current_child_status; |
1975 | else |
1976 | max_size = max(max_size, field->child[i]->field_size); |
1977 | } |
1978 | if(final_child_status != FIELD_FIXED) { |
1979 | *fixed_root = final_child_status; |
1980 | *fixed_parent = final_child_status; |
1981 | field->field_size = 0; |
1982 | field->fixed_size = current_child_status; |
1983 | } else { |
1984 | field->field_size = max_size; |
1985 | field->fixed_size = FIELD_FIXED; |
1986 | } |
1987 | break; |
dfb73233 |
1988 | } |
1989 | |
6cd62ccf |
1990 | } |
1991 | |
3aee1200 |
1992 | |
77175651 |
1993 | /***************************************************************************** |
1994 | *Function name |
1995 | * check_fields_compatibility : Check for compatibility between two fields : |
1996 | * do they use the same inner structure ? |
1997 | *Input params |
1998 | * event_type1 : event type |
1999 | * event_type2 : event type |
2000 | * field1 : field |
2001 | * field2 : field |
2002 | *Returns : 0 if identical |
2003 | * 1 if not. |
2004 | ****************************************************************************/ |
2005 | gint check_fields_compatibility(LttEventType *event_type1, |
2006 | LttEventType *event_type2, |
2007 | LttField *field1, LttField *field2) |
2008 | { |
2009 | guint different = 0; |
2010 | enum field_status local_fixed_root, local_fixed_parent; |
2011 | guint i; |
2012 | LttType *type1; |
2013 | LttType *type2; |
2014 | |
2015 | if(field1 == NULL) { |
2016 | if(field2 == NULL) goto end; |
2017 | else { |
2018 | different = 1; |
2019 | goto end; |
2020 | } |
2021 | } else if(field2 == NULL) { |
2022 | different = 1; |
2023 | goto end; |
2024 | } |
2025 | |
2026 | g_assert(field1->fixed_root != FIELD_UNKNOWN); |
2027 | g_assert(field2->fixed_root != FIELD_UNKNOWN); |
2028 | g_assert(field1->fixed_parent != FIELD_UNKNOWN); |
2029 | g_assert(field2->fixed_parent != FIELD_UNKNOWN); |
2030 | g_assert(field1->fixed_size != FIELD_UNKNOWN); |
2031 | g_assert(field2->fixed_size != FIELD_UNKNOWN); |
2032 | |
2033 | type1 = field1->field_type; |
2034 | type2 = field2->field_type; |
2035 | |
2036 | size_t current_root_offset; |
2037 | size_t current_offset; |
2038 | enum field_status current_child_status, final_child_status; |
2039 | size_t max_size; |
2040 | |
2041 | if(type1->type_class != type2->type_class) { |
2042 | different = 1; |
2043 | goto end; |
2044 | } |
2045 | if(type1->element_name != type2->element_name) { |
2046 | different = 1; |
2047 | goto end; |
2048 | } |
2049 | |
2050 | switch(type1->type_class) { |
2051 | case LTT_INT: |
2052 | case LTT_UINT: |
2053 | case LTT_FLOAT: |
2054 | case LTT_POINTER: |
2055 | case LTT_LONG: |
2056 | case LTT_ULONG: |
2057 | case LTT_SIZE_T: |
2058 | case LTT_SSIZE_T: |
2059 | case LTT_OFF_T: |
2060 | if(field1->field_size != field2->field_size) { |
2061 | different = 1; |
2062 | goto end; |
2063 | } |
2064 | break; |
2065 | case LTT_ENUM: |
2066 | if(type1->element_number != type2->element_number) { |
2067 | different = 1; |
2068 | goto end; |
2069 | } |
2070 | for(i=0;i<type1->element_number;i++) { |
2071 | if(type1->enum_strings[i] != type2->enum_strings[i]) { |
2072 | different = 1; |
2073 | goto end; |
2074 | } |
2075 | } |
2076 | break; |
2077 | case LTT_SEQUENCE: |
2078 | /* Two elements : size and child */ |
2079 | g_assert(type1->element_number != type2->element_number); |
2080 | for(i=0;i<type1->element_number;i++) { |
2081 | if(check_fields_compatibility(event_type1, event_type2, |
2082 | field1->child[0], field2->child[0])) { |
2083 | different = 1; |
2084 | goto end; |
2085 | } |
2086 | } |
2087 | break; |
2088 | case LTT_STRING: |
2089 | break; |
2090 | case LTT_ARRAY: |
2091 | if(field1->field_size != field2->field_size) { |
2092 | different = 1; |
2093 | goto end; |
2094 | } |
2095 | /* Two elements : size and child */ |
2096 | g_assert(type1->element_number != type2->element_number); |
2097 | for(i=0;i<type1->element_number;i++) { |
2098 | if(check_fields_compatibility(event_type1, event_type2, |
2099 | field1->child[0], field2->child[0])) { |
2100 | different = 1; |
2101 | goto end; |
2102 | } |
2103 | } |
2104 | break; |
2105 | case LTT_STRUCT: |
2106 | case LTT_UNION: |
2107 | if(type1->element_number != type2->element_number) { |
2108 | different = 1; |
2109 | break; |
2110 | } |
2111 | for(i=0;i<type1->element_number;i++) { |
2112 | if(check_fields_compatibility(event_type1, event_type2, |
2113 | field1->child[0], field2->child[0])) { |
2114 | different = 1; |
2115 | goto end; |
2116 | } |
2117 | } |
2118 | break; |
2119 | } |
2120 | end: |
2121 | return different; |
2122 | } |
2123 | |
2124 | |
2125 | |
3aee1200 |
2126 | |
2127 | #if 0 |
6cd62ccf |
2128 | /***************************************************************************** |
2129 | *Function name |
2130 | * getFieldtypeSize: get the size of the field type (primitive type) |
2131 | *Input params |
6cd62ccf |
2132 | * evT : event type |
2133 | * offsetRoot : offset from the root |
2134 | * offsetParent : offset from the parrent |
2135 | * fld : field |
2136 | * evD : event data, it may be NULL |
2137 | *Return value |
2138 | * int : size of the field |
2139 | ****************************************************************************/ |
2140 | |
3aee1200 |
2141 | static inline gint getFieldtypeSize(LttTracefile *tf, |
21182d4a |
2142 | LttEventType * evT, gint offsetRoot, |
3aee1200 |
2143 | gint offsetParent, LttField * fld, void *evD) |
6cd62ccf |
2144 | { |
21182d4a |
2145 | gint size, size1, element_number, i, offset1, offset2; |
963b5f2d |
2146 | LttType * type = fld->field_type; |
6cd62ccf |
2147 | |
3aee1200 |
2148 | /* This likely has been tested with gcov : half of them.. */ |
2149 | if(unlikely(fld->field_fixed == 1)){ |
2150 | /* tested : none */ |
2151 | if(unlikely(fld == evT->root_field)) { |
2152 | size = fld->field_size; |
2153 | goto end_getFieldtypeSize; |
21182d4a |
2154 | } |
3aee1200 |
2155 | } |
6cd62ccf |
2156 | |
3aee1200 |
2157 | /* From gcov profiling : half string, half struct, can we gain something |
2158 | * from that ? (Mathieu) */ |
2159 | switch(type->type_class) { |
2160 | case LTT_ARRAY: |
2161 | element_number = (int) type->element_number; |
2162 | if(fld->field_fixed == -1){ |
2163 | size = getFieldtypeSize(tf, evT, offsetRoot, |
2164 | 0,fld->child[0], NULL); |
2165 | if(size == 0){ //has string or sequence |
cf74a6f1 |
2166 | fld->field_fixed = 0; |
3aee1200 |
2167 | }else{ |
2168 | fld->field_fixed = 1; |
2169 | size *= element_number; |
a0d63196 |
2170 | } |
3aee1200 |
2171 | }else if(fld->field_fixed == 0){// has string or sequence |
cf74a6f1 |
2172 | size = 0; |
3aee1200 |
2173 | for(i=0;i<element_number;i++){ |
2174 | size += getFieldtypeSize(tf, evT, offsetRoot+size,size, |
2175 | fld->child[0], evD+size); |
cf74a6f1 |
2176 | } |
3aee1200 |
2177 | }else size = fld->field_size; |
2178 | if(unlikely(!evD)){ |
a0d63196 |
2179 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
2180 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
3aee1200 |
2181 | } |
cf74a6f1 |
2182 | |
3aee1200 |
2183 | break; |
2184 | |
2185 | case LTT_SEQUENCE: |
2186 | size1 = (int) ltt_type_size(fac, type); |
2187 | if(fld->field_fixed == -1){ |
2188 | fld->sequ_number_size = size1; |
2189 | fld->field_fixed = 0; |
2190 | size = getFieldtypeSize(evT, offsetRoot, |
2191 | 0,fld->child[0], NULL); |
2192 | fld->element_size = size; |
2193 | }else{//0: sequence |
2194 | element_number = getIntNumber(tf,size1,evD); |
2195 | type->element_number = element_number; |
2196 | if(fld->element_size > 0){ |
2197 | size = element_number * fld->element_size; |
2198 | }else{//sequence has string or sequence |
2199 | size = 0; |
cf74a6f1 |
2200 | for(i=0;i<element_number;i++){ |
3aee1200 |
2201 | size += getFieldtypeSize(tf, evT, |
2202 | offsetRoot+size+size1,size+size1, |
2203 | fld->child[0], evD+size+size1); |
cf74a6f1 |
2204 | } |
3aee1200 |
2205 | } |
2206 | size += size1; |
2207 | } |
2208 | if(unlikely(!evD)){ |
d37b2aaa |
2209 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
2210 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
3aee1200 |
2211 | } |
cf74a6f1 |
2212 | |
3aee1200 |
2213 | break; |
2214 | |
2215 | case LTT_STRING: |
2216 | size = 0; |
2217 | if(fld->field_fixed == -1){ |
2218 | fld->field_fixed = 0; |
2219 | }else{//0: string |
2220 | /* Hope my implementation is faster than strlen (Mathieu) */ |
2221 | char *ptr=(char*)evD; |
2222 | size = 1; |
2223 | /* from gcov : many many strings are empty, make it the common case.*/ |
2224 | while(unlikely(*ptr != '\0')) { size++; ptr++; } |
2225 | //size = ptr - (char*)evD + 1; //include end : '\0' |
2226 | } |
2227 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
2228 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
2229 | |
2230 | break; |
2231 | |
2232 | case LTT_STRUCT: |
2233 | element_number = (int) type->element_number; |
2234 | size = 0; |
2235 | /* tested with gcov */ |
2236 | if(unlikely(fld->field_fixed == -1)){ |
2237 | offset1 = offsetRoot; |
2238 | offset2 = 0; |
2239 | for(i=0;i<element_number;i++){ |
2240 | size1=getFieldtypeSize(tf, evT,offset1,offset2, |
2241 | fld->child[i], NULL); |
2242 | if(likely(size1 > 0 && size >= 0)){ |
2243 | size += size1; |
2244 | if(likely(offset1 >= 0)) offset1 += size1; |
2245 | offset2 += size1; |
2246 | }else{ |
2247 | size = -1; |
2248 | offset1 = -1; |
2249 | offset2 = -1; |
2250 | } |
a0d63196 |
2251 | } |
3aee1200 |
2252 | if(unlikely(size == -1)){ |
2253 | fld->field_fixed = 0; |
2254 | size = 0; |
2255 | }else fld->field_fixed = 1; |
2256 | }else if(likely(fld->field_fixed == 0)){ |
2257 | offset1 = offsetRoot; |
2258 | offset2 = 0; |
2259 | for(i=0;unlikely(i<element_number);i++){ |
2260 | size=getFieldtypeSize(tf, evT, offset1, offset2, |
2261 | fld->child[i], evD+offset2); |
2262 | offset1 += size; |
2263 | offset2 += size; |
2264 | } |
2265 | size = offset2; |
2266 | }else size = fld->field_size; |
2267 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
2268 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
2269 | break; |
2270 | |
2271 | default: |
2272 | if(unlikely(fld->field_fixed == -1)){ |
2273 | size = (int) ltt_type_size(LTT_GET_BO(tf), type); |
2274 | fld->field_fixed = 1; |
2275 | }else size = fld->field_size; |
2276 | if(unlikely(!evD)){ |
2277 | fld->fixed_root = (offsetRoot==-1) ? 0 : 1; |
2278 | fld->fixed_parent = (offsetParent==-1) ? 0 : 1; |
2279 | } |
2280 | break; |
cf74a6f1 |
2281 | } |
2282 | |
6cd62ccf |
2283 | fld->offset_root = offsetRoot; |
2284 | fld->offset_parent = offsetParent; |
6cd62ccf |
2285 | fld->field_size = size; |
2286 | |
21182d4a |
2287 | end_getFieldtypeSize: |
2288 | |
6cd62ccf |
2289 | return size; |
2290 | } |
3aee1200 |
2291 | #endif //0 |
6cd62ccf |
2292 | |
2293 | /***************************************************************************** |
2294 | *Function name |
eed2ef37 |
2295 | * ltt_get_int : get an integer number |
6cd62ccf |
2296 | *Input params |
3aee1200 |
2297 | * reverse_byte_order: must we reverse the byte order ? |
6cd62ccf |
2298 | * size : the size of the integer |
3aee1200 |
2299 | * ptr : the data pointer |
6cd62ccf |
2300 | *Return value |
cf74a6f1 |
2301 | * gint64 : a 64 bits integer |
6cd62ccf |
2302 | ****************************************************************************/ |
2303 | |
eed2ef37 |
2304 | gint64 ltt_get_int(gboolean reverse_byte_order, gint size, void *data) |
6cd62ccf |
2305 | { |
3aee1200 |
2306 | gint64 val; |
cf74a6f1 |
2307 | |
2308 | switch(size) { |
3aee1200 |
2309 | case 1: val = *((gint8*)data); break; |
2310 | case 2: val = ltt_get_int16(reverse_byte_order, data); break; |
2311 | case 4: val = ltt_get_int32(reverse_byte_order, data); break; |
2312 | case 8: val = ltt_get_int64(reverse_byte_order, data); break; |
2313 | default: val = ltt_get_int64(reverse_byte_order, data); |
2314 | g_critical("get_int : integer size %d unknown", size); |
cf74a6f1 |
2315 | break; |
2316 | } |
2317 | |
3aee1200 |
2318 | return val; |
6cd62ccf |
2319 | } |
3aee1200 |
2320 | |
6cd62ccf |
2321 | /***************************************************************************** |
2322 | *Function name |
eed2ef37 |
2323 | * ltt_get_uint : get an unsigned integer number |
6cd62ccf |
2324 | *Input params |
3aee1200 |
2325 | * reverse_byte_order: must we reverse the byte order ? |
2326 | * size : the size of the integer |
2327 | * ptr : the data pointer |
2328 | *Return value |
2329 | * guint64 : a 64 bits unsigned integer |
6cd62ccf |
2330 | ****************************************************************************/ |
2331 | |
eed2ef37 |
2332 | guint64 ltt_get_uint(gboolean reverse_byte_order, gint size, void *data) |
6cd62ccf |
2333 | { |
3aee1200 |
2334 | guint64 val; |
2335 | |
2336 | switch(size) { |
2337 | case 1: val = *((gint8*)data); break; |
2338 | case 2: val = ltt_get_uint16(reverse_byte_order, data); break; |
2339 | case 4: val = ltt_get_uint32(reverse_byte_order, data); break; |
2340 | case 8: val = ltt_get_uint64(reverse_byte_order, data); break; |
2341 | default: val = ltt_get_uint64(reverse_byte_order, data); |
2342 | g_critical("get_uint : unsigned integer size %d unknown", |
2343 | size); |
2344 | break; |
2345 | } |
2346 | |
2347 | return val; |
6cd62ccf |
2348 | } |
3aee1200 |
2349 | |
2350 | |
a5dcde2f |
2351 | /* get the node name of the system */ |
2352 | |
2353 | char * ltt_trace_system_description_node_name (LttSystemDescription * s) |
2354 | { |
2355 | return s->node_name; |
2356 | } |
2357 | |
2358 | |
2359 | /* get the domain name of the system */ |
2360 | |
2361 | char * ltt_trace_system_description_domain_name (LttSystemDescription * s) |
2362 | { |
2363 | return s->domain_name; |
2364 | } |
2365 | |
2366 | |
2367 | /* get the description of the system */ |
2368 | |
2369 | char * ltt_trace_system_description_description (LttSystemDescription * s) |
2370 | { |
2371 | return s->description; |
2372 | } |
2373 | |
2374 | |
2375 | /* get the start time of the trace */ |
2376 | |
2377 | LttTime ltt_trace_system_description_trace_start_time(LttSystemDescription *s) |
2378 | { |
2379 | return s->trace_start; |
2380 | } |
2381 | |
18206708 |
2382 | |
2383 | LttTracefile *ltt_tracefile_new() |
2384 | { |
2385 | return g_new(LttTracefile, 1); |
2386 | } |
2387 | |
2388 | void ltt_tracefile_destroy(LttTracefile *tf) |
2389 | { |
2390 | g_free(tf); |
2391 | } |
2392 | |
2393 | void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src) |
2394 | { |
2395 | *dest = *src; |
2396 | } |
2397 | |
3aee1200 |
2398 | /* Before library loading... */ |
2399 | |
2400 | static void __attribute__((constructor)) init(void) |
2401 | { |
2402 | LTT_FACILITY_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); |
2403 | LTT_EVENT_NAME_HEARTBEAT = g_quark_from_string("heartbeat"); |
2404 | |
3865ea09 |
2405 | LTT_TRACEFILE_NAME_FACILITIES = g_quark_from_string("/control/facilities"); |
3aee1200 |
2406 | } |
2407 | |