92d82357 |
1 | /****************************************************************************** |
2 | * Genevent |
3 | * |
4 | * Event generator. XML to logging C code converter. |
5 | * |
6 | * Program parameters : |
7 | * ./genevent name.xml |
8 | * |
9 | * Will generate ltt-facility-name.h, ltt-facility-id-name.h |
10 | * ltt-facility-loader-name.c, ltt-facility-loader-name.h |
11 | * in the current directory. |
12 | * |
13 | * Supports : |
14 | * - C Alignment |
15 | * - C types : struct, union, enum, basic types. |
16 | * - Architectures : LP32, ILP32, ILP64, LLP64, LP64. |
17 | * |
18 | * Additionnal structures supported : |
19 | * - embedded variable size strings |
20 | * - embedded variable size arrays |
21 | * - embedded variable size sequences |
22 | * |
23 | * Notes : |
24 | * (1) |
25 | * enums are limited to integer type, as this is what is used in C. Note, |
26 | * however, that ISO/IEC 9899:TC2 specify that the type of enum can be char, |
27 | * unsigned int or int. This is implementation defined (compiler). That's why we |
28 | * add a check for sizeof enum. |
29 | * |
30 | * (2) |
31 | * Because of archtecture defined type sizes, we need to ask for ltt_align |
32 | * (which gives the alignment) by passing basic types, not their actual sizes. |
33 | * It's up to ltt_align to determine sizes of types. |
34 | * |
35 | * Note that, from |
36 | * http://www.usenix.org/publications/login/standards/10.data.html |
37 | * (Andrew Josey <a.josey@opengroup.org>) : |
38 | * |
39 | * Data Type LP32 ILP32 ILP64 LLP64 LP64 |
40 | * char 8 8 8 8 8 |
41 | * short 16 16 16 16 16 |
42 | * int32 32 |
43 | * int 16 32 64 32 32 |
44 | * long 32 32 64 32 64 |
45 | * long long (int64) 64 |
46 | * pointer 32 32 64 64 64 |
47 | * |
48 | * With these constraints : |
49 | * sizeof(char) <= sizeof(short) <= sizeof(int) |
50 | * <= sizeof(long) = sizeof(size_t) |
51 | * |
52 | * and therefore sizeof(long) <= sizeof(pointer) <= sizeof(size_t) |
53 | * |
54 | * Which means we only have to remember which is the biggest type in a structure |
55 | * to know the structure's alignment. |
56 | */ |
57 | |
2d2d14a7 |
58 | #define _GNU_SOURCE |
59 | #include <limits.h> |
60 | #include <stdlib.h> |
92d82357 |
61 | #include <errno.h> |
62 | #include <sys/types.h> |
63 | #include <sys/stat.h> |
64 | #include <fcntl.h> |
65 | #include <stdio.h> |
66 | #include <string.h> |
67 | #include <unistd.h> |
2d2d14a7 |
68 | #include <assert.h> |
92d82357 |
69 | |
70 | #include "genevent.h" |
71 | #include "parser.h" |
72 | |
73 | |
74 | #define TRUE 1 |
75 | #define FALSE (!TRUE) |
76 | |
2d2d14a7 |
77 | /* Debugging printf */ |
78 | #ifdef DEBUG |
79 | #define dprintf(...) \ |
80 | do {\ |
81 | printf(__FILE__ ",%u,%s: ",\ |
82 | __LINE__, __func__);\ |
83 | printf(__VA_ARGS__);\ |
84 | } while(0) |
85 | #else |
86 | #define dprintf(...) |
87 | #endif |
88 | |
92d82357 |
89 | /* Code printing */ |
90 | |
2d2d14a7 |
91 | void print_tabs(unsigned int tabs, FILE *fd) |
92 | { |
93 | for(unsigned int i = 0; i<tabs;i++) |
94 | fprintf(fd, "\t"); |
95 | } |
96 | |
2d2d14a7 |
97 | /* print type. |
98 | * |
99 | * Copied from construct_types_and_fields in LTTV facility.c */ |
100 | |
101 | int print_type(type_descriptor_t * td, FILE *fd, unsigned int tabs, |
102 | char *nest_name, char *field_name) |
103 | { |
104 | char basename[PATH_MAX]; |
105 | unsigned int basename_len = 0; |
106 | |
107 | strcpy(basename, nest_name); |
108 | basename_len = strlen(basename); |
109 | |
110 | /* For a named type, we use the type_name directly */ |
111 | if(td->type_name != NULL) { |
112 | strncpy(basename, td->type_name, PATH_MAX); |
113 | basename_len = strlen(basename); |
114 | } else { |
115 | /* For a unnamed type, there must be a field name */ |
7b175edc |
116 | if((basename_len != 0) |
117 | && (basename[basename_len-1] != '_') |
118 | && (field_name[0] != '\0')) { |
2d2d14a7 |
119 | strncat(basename, "_", PATH_MAX - basename_len); |
120 | basename_len = strlen(basename); |
121 | } |
122 | strncat(basename, field_name, PATH_MAX - basename_len); |
123 | } |
124 | |
125 | switch(td->type) { |
126 | case INT_FIXED: |
127 | fprintf(fd, "%s", intOutputTypes[getSizeindex(td->size)]); |
128 | break; |
129 | case UINT_FIXED: |
130 | fprintf(fd, "%s", uintOutputTypes[getSizeindex(td->size)]); |
131 | break; |
132 | case CHAR: |
133 | fprintf(fd, "signed char"); |
134 | break; |
135 | case UCHAR: |
136 | fprintf(fd, "unsigned char"); |
137 | break; |
138 | case SHORT: |
139 | fprintf(fd, "short"); |
140 | break; |
141 | case USHORT: |
142 | fprintf(fd, "unsigned short"); |
143 | break; |
144 | case INT: |
145 | fprintf(fd, "int"); |
146 | break; |
147 | case UINT: |
148 | fprintf(fd, "unsigned int"); |
149 | break; |
150 | case FLOAT: |
151 | fprintf(fd, "%s", floatOutputTypes[getSizeindex(td->size)]); |
152 | break; |
153 | case POINTER: |
154 | fprintf(fd, "void *"); |
155 | break; |
156 | case LONG: |
157 | fprintf(fd, "long"); |
158 | break; |
159 | case ULONG: |
160 | fprintf(fd, "unsigned long"); |
161 | break; |
162 | case SIZE_T: |
163 | fprintf(fd, "size_t"); |
164 | break; |
165 | case SSIZE_T: |
166 | fprintf(fd, "ssize_t"); |
167 | break; |
168 | case OFF_T: |
169 | fprintf(fd, "off_t"); |
170 | break; |
171 | case STRING: |
172 | fprintf(fd, "char *"); |
173 | break; |
174 | case ENUM: |
175 | fprintf(fd, "enum lttng_%s", basename); |
176 | break; |
177 | case ARRAY: |
178 | fprintf(fd, "lttng_array_%s", basename); |
179 | break; |
180 | case SEQUENCE: |
181 | fprintf(fd, "lttng_sequence_%s", basename); |
182 | break; |
183 | case STRUCT: |
184 | fprintf(fd, "struct lttng_%s", basename); |
185 | break; |
186 | case UNION: |
187 | fprintf(fd, "union lttng_%s", basename); |
188 | break; |
189 | default: |
190 | printf("print_type : unknown type\n"); |
191 | return 1; |
192 | } |
193 | |
194 | return 0; |
195 | } |
196 | |
7e97b039 |
197 | /* Print logging function argument */ |
198 | int print_arg(type_descriptor_t * td, FILE *fd, unsigned int tabs, |
199 | char *nest_name, char *field_name) |
200 | { |
201 | char basename[PATH_MAX]; |
202 | unsigned int basename_len = 0; |
203 | |
204 | strcpy(basename, nest_name); |
205 | basename_len = strlen(basename); |
206 | |
207 | /* For a named type, we use the type_name directly */ |
208 | if(td->type_name != NULL) { |
209 | strncpy(basename, td->type_name, PATH_MAX); |
210 | basename_len = strlen(basename); |
211 | } else { |
212 | /* For a unnamed type, there must be a field name */ |
213 | if((basename_len != 0) |
214 | && (basename[basename_len-1] != '_') |
215 | && (field_name[0] != '\0')) { |
216 | strncat(basename, "_", PATH_MAX - basename_len); |
217 | basename_len = strlen(basename); |
218 | } |
219 | strncat(basename, field_name, PATH_MAX - basename_len); |
220 | } |
221 | |
222 | print_tabs(tabs, fd); |
223 | |
224 | switch(td->type) { |
225 | case INT_FIXED: |
226 | fprintf(fd, "%s", intOutputTypes[getSizeindex(td->size)]); |
227 | fprintf(fd, " %s", field_name); |
228 | break; |
229 | case UINT_FIXED: |
230 | fprintf(fd, "%s", uintOutputTypes[getSizeindex(td->size)]); |
231 | fprintf(fd, " %s", field_name); |
232 | break; |
233 | case CHAR: |
234 | fprintf(fd, "signed char"); |
235 | fprintf(fd, " %s", field_name); |
236 | break; |
237 | case UCHAR: |
238 | fprintf(fd, "unsigned char"); |
239 | fprintf(fd, " %s", field_name); |
240 | break; |
241 | case SHORT: |
242 | fprintf(fd, "short"); |
243 | fprintf(fd, " %s", field_name); |
244 | break; |
245 | case USHORT: |
246 | fprintf(fd, "unsigned short"); |
247 | fprintf(fd, " %s", field_name); |
248 | break; |
249 | case INT: |
250 | fprintf(fd, "int"); |
251 | fprintf(fd, " %s", field_name); |
252 | break; |
253 | case UINT: |
254 | fprintf(fd, "unsigned int"); |
255 | fprintf(fd, " %s", field_name); |
256 | break; |
257 | case FLOAT: |
258 | fprintf(fd, "%s", floatOutputTypes[getSizeindex(td->size)]); |
259 | fprintf(fd, " %s", field_name); |
260 | break; |
261 | case POINTER: |
262 | fprintf(fd, "void *"); |
263 | fprintf(fd, " %s", field_name); |
264 | break; |
265 | case LONG: |
266 | fprintf(fd, "long"); |
267 | fprintf(fd, " %s", field_name); |
268 | break; |
269 | case ULONG: |
270 | fprintf(fd, "unsigned long"); |
271 | fprintf(fd, " %s", field_name); |
272 | break; |
273 | case SIZE_T: |
274 | fprintf(fd, "size_t"); |
275 | fprintf(fd, " %s", field_name); |
276 | break; |
277 | case SSIZE_T: |
278 | fprintf(fd, "ssize_t"); |
279 | fprintf(fd, " %s", field_name); |
280 | break; |
281 | case OFF_T: |
282 | fprintf(fd, "off_t"); |
283 | fprintf(fd, " %s", field_name); |
284 | break; |
285 | case STRING: |
286 | fprintf(fd, "char *"); |
287 | fprintf(fd, " %s", field_name); |
288 | break; |
289 | case ENUM: |
290 | fprintf(fd, "enum lttng_%s", basename); |
291 | fprintf(fd, " %s", field_name); |
292 | break; |
293 | case ARRAY: |
294 | fprintf(fd, "lttng_array_%s", basename); |
295 | fprintf(fd, " %s", field_name); |
296 | break; |
297 | case SEQUENCE: |
298 | fprintf(fd, "lttng_sequence_%s *", basename); |
299 | fprintf(fd, " %s", field_name); |
300 | break; |
301 | case STRUCT: |
302 | fprintf(fd, "struct lttng_%s *", basename); |
303 | fprintf(fd, " %s", field_name); |
304 | break; |
305 | case UNION: |
306 | fprintf(fd, "union lttng_%s *", basename); |
307 | fprintf(fd, " %s", field_name); |
308 | break; |
309 | default: |
310 | printf("print_type : unknown type\n"); |
311 | return 1; |
312 | } |
313 | |
314 | return 0; |
315 | } |
316 | |
317 | |
a3e6ce64 |
318 | /* Does the type has a fixed size ? (as know from the compiler) |
319 | * |
320 | * 1 : fixed size |
321 | * 0 : variable length |
322 | */ |
323 | int has_type_fixed_size(type_descriptor_t *td) |
324 | { |
325 | switch(td->type) { |
326 | case INT_FIXED: |
327 | case UINT_FIXED: |
328 | case CHAR: |
329 | case UCHAR: |
330 | case SHORT: |
331 | case USHORT: |
332 | case INT: |
333 | case UINT: |
334 | case FLOAT: |
335 | case POINTER: |
336 | case LONG: |
337 | case ULONG: |
338 | case SIZE_T: |
339 | case SSIZE_T: |
340 | case OFF_T: |
341 | case ENUM: |
342 | case UNION: /* The union must have fixed size children. Must be checked by |
343 | the parser */ |
344 | return 1; |
345 | break; |
346 | case STRING: |
347 | case SEQUENCE: |
348 | return 0; |
349 | break; |
350 | case STRUCT: |
351 | { |
352 | int has_type_fixed = 0; |
353 | for(unsigned int i=0;i<td->fields.position;i++){ |
354 | field_t *field = (field_t*)(td->fields.array[i]); |
355 | type_descriptor_t *type = field->type; |
356 | |
357 | has_type_fixed = has_type_fixed_size(type); |
358 | if(!has_type_fixed) return 0; |
359 | } |
360 | return 1; |
361 | } |
362 | break; |
363 | case ARRAY: |
364 | assert(td->size >= 0); |
2e415130 |
365 | return has_type_fixed_size(((field_t*)td->fields.array[0])->type); |
366 | break; |
367 | case NONE: |
368 | printf("There is a type defined to NONE : bad.\n"); |
369 | assert(0); |
a3e6ce64 |
370 | break; |
371 | } |
2e415130 |
372 | return 0; //make gcc happy. |
a3e6ce64 |
373 | } |
374 | |
375 | |
376 | |
377 | |
378 | |
2d2d14a7 |
379 | /* print type declaration. |
380 | * |
381 | * Copied from construct_types_and_fields in LTTV facility.c */ |
382 | |
383 | int print_type_declaration(type_descriptor_t * td, FILE *fd, unsigned int tabs, |
384 | char *nest_name, char *field_name) |
385 | { |
386 | char basename[PATH_MAX]; |
387 | unsigned int basename_len = 0; |
388 | |
7b175edc |
389 | strncpy(basename, nest_name, PATH_MAX); |
2d2d14a7 |
390 | basename_len = strlen(basename); |
391 | |
392 | /* For a named type, we use the type_name directly */ |
393 | if(td->type_name != NULL) { |
394 | strncpy(basename, td->type_name, PATH_MAX); |
395 | basename_len = strlen(basename); |
396 | } else { |
7b175edc |
397 | /* For a unnamed type, there must be a field name, except for |
398 | * the array. */ |
399 | if((basename_len != 0) |
400 | && (basename[basename_len-1] != '_' |
401 | && (field_name[0] != '\0'))) { |
2d2d14a7 |
402 | strncat(basename, "_", PATH_MAX - basename_len); |
403 | basename_len = strlen(basename); |
404 | } |
405 | strncat(basename, field_name, PATH_MAX - basename_len); |
2d2d14a7 |
406 | } |
407 | |
408 | switch(td->type) { |
409 | case ENUM: |
410 | fprintf(fd, "enum lttng_%s", basename); |
411 | fprintf(fd, " {\n"); |
412 | for(unsigned int i=0;i<td->labels.position;i++){ |
413 | print_tabs(1, fd); |
414 | fprintf(fd, "LTTNG_%s", ((char*)(td->labels.array[i]))); |
415 | fprintf(fd, ",\n"); |
416 | } |
417 | fprintf(fd, "};\n"); |
418 | fprintf(fd, "\n"); |
419 | break; |
420 | |
421 | case ARRAY: |
7b175edc |
422 | dprintf("%s\n", basename); |
2d2d14a7 |
423 | assert(td->size >= 0); |
a67cd958 |
424 | if(((field_t*)td->fields.array[0])->type->type_name == NULL) { |
2d2d14a7 |
425 | /* Not a named nested type : we must print its declaration first */ |
a67cd958 |
426 | if(print_type_declaration(((field_t*)td->fields.array[0])->type, |
2d2d14a7 |
427 | fd, 0, basename, "")) return 1; |
428 | } |
2e415130 |
429 | fprintf(fd, "#define LTTNG_ARRAY_SIZE_%s %zu\n", basename, |
2d2d14a7 |
430 | td->size); |
7e97b039 |
431 | fprintf(fd, "typedef "); |
a67cd958 |
432 | if(print_type(((field_t*)td->fields.array[0])->type, |
433 | fd, tabs, basename, "")) return 1; |
2d2d14a7 |
434 | fprintf(fd, " lttng_array_%s[LTTNG_ARRAY_SIZE_%s];\n", basename, |
435 | basename); |
436 | fprintf(fd, "\n"); |
437 | break; |
438 | case SEQUENCE: |
a67cd958 |
439 | /* We assume that the sequence length type does not need to be declared. |
440 | */ |
441 | if(((field_t*)td->fields.array[1])->type->type_name == NULL) { |
2d2d14a7 |
442 | /* Not a named nested type : we must print its declaration first */ |
a67cd958 |
443 | if(print_type_declaration(((field_t*)td->fields.array[1])->type, |
2d2d14a7 |
444 | fd, 0, basename, "")) return 1; |
445 | } |
446 | fprintf(fd, "typedef struct lttng_sequence_%s lttng_sequence_%s;\n", |
447 | basename, |
448 | basename); |
449 | fprintf(fd, "struct lttng_sequence_%s", basename); |
450 | fprintf(fd, " {\n"); |
451 | print_tabs(1, fd); |
a3e6ce64 |
452 | if(print_type(((field_t*)td->fields.array[0])->type, |
453 | fd, tabs, basename, "")) return 1; |
454 | fprintf(fd, "len;\n"); |
2d2d14a7 |
455 | print_tabs(1, fd); |
a67cd958 |
456 | if(print_type(((field_t*)td->fields.array[1])->type, |
457 | fd, tabs, basename, "")) return 1; |
2d2d14a7 |
458 | fprintf(fd, " *array;\n"); |
459 | fprintf(fd, "};\n"); |
460 | fprintf(fd, "\n"); |
461 | break; |
462 | |
463 | case STRUCT: |
464 | for(unsigned int i=0;i<td->fields.position;i++){ |
465 | field_t *field = (field_t*)(td->fields.array[i]); |
466 | type_descriptor_t *type = field->type; |
467 | if(type->type_name == NULL) { |
468 | /* Not a named nested type : we must print its declaration first */ |
469 | if(print_type_declaration(type, |
470 | fd, 0, basename, field->name)) return 1; |
471 | } |
472 | } |
473 | fprintf(fd, "struct lttng_%s", basename); |
474 | fprintf(fd, " {\n"); |
475 | for(unsigned int i=0;i<td->fields.position;i++){ |
476 | field_t *field = (field_t*)(td->fields.array[i]); |
477 | type_descriptor_t *type = field->type; |
478 | print_tabs(1, fd); |
47299663 |
479 | if(print_type(type, fd, tabs, basename, field->name)) return 1; |
2d2d14a7 |
480 | fprintf(fd, " "); |
481 | fprintf(fd, "%s", field->name); |
482 | fprintf(fd, ";\n"); |
483 | } |
484 | fprintf(fd, "};\n"); |
485 | fprintf(fd, "\n"); |
486 | break; |
487 | case UNION: |
488 | /* TODO : Do not allow variable length fields in a union */ |
489 | for(unsigned int i=0;i<td->fields.position;i++){ |
490 | field_t *field = (field_t*)(td->fields.array[i]); |
491 | type_descriptor_t *type = field->type; |
492 | if(type->type_name == NULL) { |
493 | /* Not a named nested type : we must print its declaration first */ |
47299663 |
494 | if(print_type_declaration(type, |
495 | fd, 0, basename, field->name)) return 1; |
2d2d14a7 |
496 | } |
497 | } |
498 | fprintf(fd, "union lttng_%s", basename); |
499 | fprintf(fd, " {\n"); |
500 | for(unsigned i=0;i<td->fields.position;i++){ |
501 | field_t *field = (field_t*)(td->fields.array[i]); |
502 | type_descriptor_t *type = field->type; |
503 | print_tabs(1, fd); |
47299663 |
504 | if(print_type(type, fd, tabs, basename, field->name)) return 1; |
2d2d14a7 |
505 | fprintf(fd, " "); |
506 | fprintf(fd, "%s", field->name); |
507 | fprintf(fd, ";\n"); |
508 | } |
509 | fprintf(fd, "};\n"); |
510 | fprintf(fd, "\n"); |
511 | break; |
512 | default: |
513 | dprintf("print_type_declaration : unknown type or nothing to declare.\n"); |
514 | break; |
515 | } |
516 | |
517 | return 0; |
518 | } |
519 | |
a67cd958 |
520 | |
a3e6ce64 |
521 | /* print type alignment. |
522 | * |
523 | * Copied from construct_types_and_fields in LTTV facility.c |
524 | * |
525 | * basename is the name which identifies the type (along with a prefix |
526 | * (possibly)). */ |
a67cd958 |
527 | |
a3e6ce64 |
528 | int print_type_alignment(type_descriptor_t * td, FILE *fd, unsigned int tabs, |
529 | char *nest_name, char *field_name) |
a67cd958 |
530 | { |
a3e6ce64 |
531 | char basename[PATH_MAX]; |
532 | unsigned int basename_len = 0; |
533 | |
534 | strncpy(basename, nest_name, PATH_MAX); |
535 | basename_len = strlen(basename); |
536 | |
537 | /* For a named type, we use the type_name directly */ |
538 | if(td->type_name != NULL) { |
539 | strncpy(basename, td->type_name, PATH_MAX); |
540 | basename_len = strlen(basename); |
a67cd958 |
541 | } else { |
a3e6ce64 |
542 | /* For a unnamed type, there must be a field name, except for |
543 | * the array. */ |
544 | if((basename_len != 0) |
545 | && (basename[basename_len-1] != '_' |
546 | && (field_name[0] != '\0'))) { |
547 | strncat(basename, "_", PATH_MAX - basename_len); |
548 | basename_len = strlen(basename); |
a67cd958 |
549 | } |
a3e6ce64 |
550 | strncat(basename, field_name, PATH_MAX - basename_len); |
a67cd958 |
551 | } |
a3e6ce64 |
552 | |
553 | switch(td->type) { |
a67cd958 |
554 | case INT_FIXED: |
555 | case UINT_FIXED: |
a67cd958 |
556 | case CHAR: |
557 | case UCHAR: |
558 | case SHORT: |
559 | case USHORT: |
a3e6ce64 |
560 | case INT: |
561 | case UINT: |
562 | case FLOAT: |
563 | case POINTER: |
564 | case LONG: |
565 | case ULONG: |
566 | case SIZE_T: |
567 | case SSIZE_T: |
568 | case OFF_T: |
569 | case ENUM: |
570 | fprintf(fd, "sizeof("); |
2e415130 |
571 | if(print_type(td, fd, 0, basename, "")) return 1; |
a3e6ce64 |
572 | fprintf(fd, ")"); |
573 | break; |
574 | case STRING: |
575 | fprintf(fd, "sizeof(char)"); |
576 | break; |
577 | case SEQUENCE: |
578 | fprintf(fd, "lttng_get_alignment_sequence_%s(&obj->%s)", basename, |
579 | field_name); |
580 | break; |
581 | case STRUCT: |
582 | fprintf(fd, "lttng_get_alignment_struct_%s(&obj->%s)", basename, |
583 | field_name); |
584 | break; |
585 | case UNION: |
586 | fprintf(fd, "lttng_get_alignment_union_%s(&obj->%s)", basename, |
587 | field_name); |
588 | break; |
589 | case ARRAY: |
590 | fprintf(fd, "lttng_get_alignment_array_%s(obj->%s)", basename, |
591 | field_name); |
592 | break; |
2e415130 |
593 | case NONE: |
594 | printf("error : type NONE unexpected\n"); |
595 | return 1; |
596 | break; |
a3e6ce64 |
597 | } |
a67cd958 |
598 | |
a3e6ce64 |
599 | return 0; |
a67cd958 |
600 | } |
601 | |
a3e6ce64 |
602 | /* print type write. |
603 | * |
604 | * Copied from construct_types_and_fields in LTTV facility.c |
605 | * |
606 | * basename is the name which identifies the type (along with a prefix |
607 | * (possibly)). */ |
a67cd958 |
608 | |
a3e6ce64 |
609 | int print_type_write(type_descriptor_t * td, FILE *fd, unsigned int tabs, |
610 | char *nest_name, char *field_name) |
a67cd958 |
611 | { |
a67cd958 |
612 | char basename[PATH_MAX]; |
613 | unsigned int basename_len = 0; |
a3e6ce64 |
614 | |
615 | strncpy(basename, nest_name, PATH_MAX); |
a67cd958 |
616 | basename_len = strlen(basename); |
617 | |
618 | /* For a named type, we use the type_name directly */ |
619 | if(td->type_name != NULL) { |
620 | strncpy(basename, td->type_name, PATH_MAX); |
621 | basename_len = strlen(basename); |
622 | } else { |
a3e6ce64 |
623 | /* For a unnamed type, there must be a field name, except for |
624 | * the array. */ |
a67cd958 |
625 | if((basename_len != 0) |
a3e6ce64 |
626 | && (basename[basename_len-1] != '_' |
627 | && (field_name[0] != '\0'))) { |
a67cd958 |
628 | strncat(basename, "_", PATH_MAX - basename_len); |
629 | basename_len = strlen(basename); |
630 | } |
631 | strncat(basename, field_name, PATH_MAX - basename_len); |
632 | } |
633 | |
a67cd958 |
634 | switch(td->type) { |
635 | case INT_FIXED: |
636 | case UINT_FIXED: |
637 | case CHAR: |
638 | case UCHAR: |
639 | case SHORT: |
640 | case USHORT: |
641 | case INT: |
642 | case UINT: |
643 | case FLOAT: |
644 | case POINTER: |
645 | case LONG: |
646 | case ULONG: |
647 | case SIZE_T: |
648 | case SSIZE_T: |
649 | case OFF_T: |
650 | case ENUM: |
a67cd958 |
651 | print_tabs(tabs, fd); |
a3e6ce64 |
652 | fprintf(fd, "size = "); |
653 | fprintf(fd, "sizeof("); |
2e415130 |
654 | if(print_type(td, fd, 0, basename, "")) return 1; |
a67cd958 |
655 | fprintf(fd, ");\n"); |
a67cd958 |
656 | print_tabs(tabs, fd); |
a3e6ce64 |
657 | fprintf(fd, "size += ltt_align(*to+*len, size) + size;"); |
658 | print_tabs(tabs, fd); |
659 | fprintf(fd, "*len += size;"); |
a67cd958 |
660 | break; |
661 | case STRING: |
a67cd958 |
662 | print_tabs(tabs, fd); |
2e415130 |
663 | fprintf(fd, "lttng_write_string_%s(buffer, to_base, to, from, len, obj->%s);\n", basename, field_name); |
a3e6ce64 |
664 | break; |
665 | case SEQUENCE: |
666 | print_tabs(tabs, fd); |
667 | fprintf(fd, "lttng_write_%s(buffer, to_base, to, from, len, obj->%s)", basename, |
668 | field_name); |
669 | break; |
670 | case STRUCT: |
671 | print_tabs(tabs, fd); |
672 | fprintf(fd, "lttng_write_struct_%s(buffer, to_base, to, from, len, obj->%s)", basename, |
673 | field_name); |
674 | break; |
675 | case UNION: |
676 | print_tabs(tabs, fd); |
677 | fprintf(fd, "lttng_write_union_%s(buffer, to_base, to, from, len, obj->%s)", basename, |
678 | field_name); |
a67cd958 |
679 | break; |
680 | case ARRAY: |
a67cd958 |
681 | print_tabs(tabs, fd); |
a3e6ce64 |
682 | fprintf(fd, "lttng_write_array_%s(buffer, to_base, to, from, len, obj->%s)", basename, |
683 | field_name); |
684 | break; |
2e415130 |
685 | case NONE: |
686 | printf("Error : type NONE unexpected\n"); |
687 | return 1; |
688 | break; |
a3e6ce64 |
689 | } |
a67cd958 |
690 | |
a3e6ce64 |
691 | return 0; |
692 | } |
a67cd958 |
693 | |
a67cd958 |
694 | |
a67cd958 |
695 | |
a3e6ce64 |
696 | /* print type alignment function. |
697 | * |
698 | * Copied from construct_types_and_fields in LTTV facility.c |
699 | * |
700 | * basename is the name which identifies the type (along with a prefix |
701 | * (possibly)). */ |
702 | |
703 | int print_type_alignment_fct(type_descriptor_t * td, FILE *fd, |
704 | unsigned int tabs, |
705 | char *nest_name, char *field_name) |
706 | { |
707 | char basename[PATH_MAX]; |
708 | unsigned int basename_len = 0; |
709 | |
710 | strncpy(basename, nest_name, PATH_MAX); |
711 | basename_len = strlen(basename); |
712 | |
713 | /* For a named type, we use the type_name directly */ |
714 | if(td->type_name != NULL) { |
715 | strncpy(basename, td->type_name, PATH_MAX); |
716 | basename_len = strlen(basename); |
717 | } else { |
718 | /* For a unnamed type, there must be a field name, except for |
719 | * the array. */ |
720 | if((basename_len != 0) |
721 | && (basename[basename_len-1] != '_' |
722 | && (field_name[0] != '\0'))) { |
723 | strncat(basename, "_", PATH_MAX - basename_len); |
724 | basename_len = strlen(basename); |
725 | } |
726 | strncat(basename, field_name, PATH_MAX - basename_len); |
727 | } |
728 | |
729 | switch(td->type) { |
730 | case SEQUENCE: |
731 | /* Function header */ |
732 | fprintf(fd, "static inline size_t lttng_get_alignment_sequence_%s(\n", |
733 | basename); |
734 | print_tabs(2, fd); |
2e415130 |
735 | if(print_type(td, fd, 0, basename, "")) return 1; |
a3e6ce64 |
736 | fprintf(fd, " *obj)\n"); |
737 | fprintf(fd, "{\n"); |
738 | print_tabs(1, fd); |
739 | fprintf(fd, "size_t align=0, localign;"); |
740 | fprintf(fd, "\n"); |
741 | print_tabs(1, fd); |
742 | fprintf(fd, "localign = "); |
743 | if(print_type_alignment(((field_t*)td->fields.array[0])->type, |
2e415130 |
744 | fd, 0, basename, ((field_t*)td->fields.array[0])->name)) return 1; |
a3e6ce64 |
745 | fprintf(fd, ";\n"); |
746 | print_tabs(1, fd); |
747 | fprintf(fd, "align = max(align, localign);\n"); |
748 | fprintf(fd, "\n"); |
749 | print_tabs(1, fd); |
750 | fprintf(fd, "localign = "); |
751 | if(print_type_alignment(((field_t*)td->fields.array[1])->type, |
2e415130 |
752 | fd, 0, basename, ((field_t*)td->fields.array[1])->name)) return 1; |
a3e6ce64 |
753 | fprintf(fd, ";\n"); |
754 | print_tabs(1, fd); |
755 | fprintf(fd, "align = max(align, localign);\n"); |
756 | fprintf(fd, "\n"); |
757 | print_tabs(1, fd); |
758 | fprintf(fd, "return align;\n"); |
759 | break; |
760 | case STRUCT: |
761 | /* Function header */ |
762 | fprintf(fd, "static inline size_t lttng_get_alignment_struct_%s(\n", |
763 | basename); |
764 | print_tabs(2, fd); |
2e415130 |
765 | if(print_type(td, fd, 0, basename, "")) return 1; |
a3e6ce64 |
766 | fprintf(fd, " *obj)\n"); |
767 | fprintf(fd, "{\n"); |
768 | print_tabs(1, fd); |
769 | fprintf(fd, "size_t align=0, localign;"); |
770 | fprintf(fd, "\n"); |
771 | for(unsigned int i=0;i<td->fields.position;i++){ |
772 | field_t *field = (field_t*)(td->fields.array[i]); |
773 | type_descriptor_t *type = field->type; |
774 | print_tabs(1, fd); |
775 | fprintf(fd, "localign = "); |
776 | if(print_type_alignment(type, fd, 0, basename, field->name)) return 1; |
777 | fprintf(fd, ";\n"); |
778 | print_tabs(1, fd); |
779 | fprintf(fd, "align = max(align, localign);\n"); |
780 | fprintf(fd, "\n"); |
781 | } |
782 | print_tabs(1, fd); |
783 | fprintf(fd, "return align;\n"); |
784 | |
a67cd958 |
785 | break; |
a3e6ce64 |
786 | case UNION: |
787 | /* Function header */ |
788 | fprintf(fd, "static inline size_t lttng_get_alignment_union_%s(\n", |
789 | basename); |
790 | print_tabs(2, fd); |
2e415130 |
791 | if(print_type(td, fd, 0, basename, "")) return 1; |
a3e6ce64 |
792 | fprintf(fd, " *obj)\n"); |
793 | fprintf(fd, "{\n"); |
794 | print_tabs(1, fd); |
795 | fprintf(fd, "size_t align=0, localign;"); |
796 | fprintf(fd, "\n"); |
797 | for(unsigned int i=0;i<td->fields.position;i++){ |
798 | field_t *field = (field_t*)(td->fields.array[i]); |
799 | type_descriptor_t *type = field->type; |
800 | print_tabs(1, fd); |
801 | fprintf(fd, "localign = "); |
802 | if(print_type_alignment(type, fd, 0, basename, field->name)) return 1; |
803 | fprintf(fd, ";\n"); |
804 | print_tabs(1, fd); |
805 | fprintf(fd, "align = max(align, localign);\n"); |
806 | fprintf(fd, "\n"); |
807 | } |
808 | print_tabs(1, fd); |
809 | fprintf(fd, "return align;\n"); |
810 | |
811 | break; |
812 | case ARRAY: |
813 | /* Function header */ |
814 | fprintf(fd, "static inline size_t lttng_get_alignment_array_%s(\n", |
815 | basename); |
816 | print_tabs(2, fd); |
2e415130 |
817 | if(print_type(td, fd, 0, basename, "")) return 1; |
a3e6ce64 |
818 | fprintf(fd, " obj)\n"); |
819 | fprintf(fd, "{\n"); |
820 | print_tabs(1, fd); |
821 | fprintf(fd, "return \n"); |
822 | if(print_type_alignment(((field_t*)td->fields.array[0])->type, |
2e415130 |
823 | fd, 0, basename, ((field_t*)td->fields.array[0])->name)) return 1; |
a3e6ce64 |
824 | fprintf(fd, ";\n"); |
825 | break; |
826 | default: |
827 | printf("print_type_alignment_fct : type has no alignment function.\n"); |
828 | break; |
829 | } |
830 | |
831 | |
832 | /* Function footer */ |
833 | fprintf(fd, "}\n"); |
834 | fprintf(fd, "\n"); |
835 | |
2e415130 |
836 | return 0; |
a3e6ce64 |
837 | } |
838 | |
839 | /* print type write function. |
840 | * |
841 | * Copied from construct_types_and_fields in LTTV facility.c |
842 | * |
843 | * basename is the name which identifies the type (along with a prefix |
844 | * (possibly)). */ |
845 | |
846 | int print_type_write_fct(type_descriptor_t * td, FILE *fd, unsigned int tabs, |
847 | char *nest_name, char *field_name) |
848 | { |
849 | char basename[PATH_MAX]; |
850 | unsigned int basename_len = 0; |
851 | |
852 | strncpy(basename, nest_name, PATH_MAX); |
853 | basename_len = strlen(basename); |
854 | |
855 | /* For a named type, we use the type_name directly */ |
856 | if(td->type_name != NULL) { |
857 | strncpy(basename, td->type_name, PATH_MAX); |
858 | basename_len = strlen(basename); |
859 | } else { |
860 | /* For a unnamed type, there must be a field name, except for |
861 | * the array. */ |
862 | if((basename_len != 0) |
863 | && (basename[basename_len-1] != '_' |
864 | && (field_name[0] != '\0'))) { |
865 | strncat(basename, "_", PATH_MAX - basename_len); |
866 | basename_len = strlen(basename); |
867 | } |
868 | strncat(basename, field_name, PATH_MAX - basename_len); |
869 | } |
870 | |
871 | /* Print header */ |
872 | switch(td->type) { |
a67cd958 |
873 | case SEQUENCE: |
a3e6ce64 |
874 | fprintf(fd, "static inline size_t lttng_get_alignment_sequence_%s(\n", |
875 | basename); |
876 | |
877 | fprintf(fd, "lttng_get_alignment_sequence_%s(&obj->%s)", basename, |
878 | field_name); |
a67cd958 |
879 | break; |
a3e6ce64 |
880 | case STRUCT: |
881 | fprintf(fd, "lttng_get_alignment_struct_%s(&obj->%s)", basename, |
882 | field_name); |
a67cd958 |
883 | break; |
a3e6ce64 |
884 | case UNION: |
885 | fprintf(fd, "lttng_get_alignment_union_%s(&obj->%s)", basename, |
886 | field_name); |
887 | break; |
888 | case ARRAY: |
889 | fprintf(fd, "lttng_get_alignment_array_%s(obj->%s)", basename, |
890 | field_name); |
891 | break; |
892 | default: |
893 | printf("print_type_write_fct : type has no write function.\n"); |
a67cd958 |
894 | break; |
a67cd958 |
895 | } |
896 | |
a3e6ce64 |
897 | print_tabs(2, fd); |
898 | fprintf(fd, "void *buffer,\n"); |
899 | print_tabs(2, fd); |
900 | fprintf(fd, "size_t *to_base,\n"); |
901 | print_tabs(2, fd); |
902 | fprintf(fd, "size_t *to,\n"); |
903 | print_tabs(2, fd); |
904 | fprintf(fd, "void **from,\n"); |
905 | print_tabs(2, fd); |
906 | fprintf(fd, "size_t *len,\n"); |
907 | print_tabs(2, fd); |
2e415130 |
908 | if(print_type(td, fd, 0, basename, "")) return 1; |
a3e6ce64 |
909 | |
910 | switch(td->type) { |
911 | case SEQUENCE: |
912 | fprintf(fd, " *obj)\n"); |
913 | break; |
914 | case STRUCT: |
915 | fprintf(fd, " *obj)\n"); |
916 | break; |
917 | case UNION: |
918 | fprintf(fd, " *obj)\n"); |
919 | break; |
920 | case ARRAY: |
921 | fprintf(fd, " obj)\n"); |
922 | break; |
923 | default: |
924 | printf("print_type_write_fct : type has no write function.\n"); |
925 | break; |
926 | } |
927 | |
928 | fprintf(fd, "{\n"); |
929 | print_tabs(1, fd); |
930 | fprintf(fd, "size_t align, size;\n"); |
931 | fprintf(fd, "\n"); |
932 | |
933 | switch(td->type) { |
934 | case SEQUENCE: |
935 | case STRING: |
936 | print_tabs(1, fd); |
937 | fprintf(fd, "/* Flush pending memcpy */\n"); |
938 | print_tabs(1, fd); |
939 | fprintf(fd, "if(*len != 0) {\n"); |
940 | print_tabs(2, fd); |
941 | fprintf(fd, "if(buffer != NULL)\n"); |
942 | print_tabs(3, fd); |
943 | fprintf(fd, "memcpy(buffer+*to_base+*to, *from, *len);\n"); |
944 | print_tabs(1, fd); |
945 | fprintf(fd, "}\n"); |
946 | print_tabs(1, fd); |
947 | fprintf(fd, "*to += *len;\n"); |
948 | print_tabs(1, fd); |
949 | fprintf(fd, "*len = 0;\n"); |
950 | fprintf(fd, "\n"); |
951 | break; |
952 | case STRUCT: |
953 | case UNION: |
954 | case ARRAY: |
955 | break; |
956 | default: |
957 | printf("print_type_write_fct : type has no write function.\n"); |
958 | break; |
959 | } |
960 | |
961 | print_tabs(1, fd); |
962 | fprintf(fd, "align = \n"); |
2e415130 |
963 | if(print_type_alignment(td, fd, 0, basename, field_name)) return 1; |
a3e6ce64 |
964 | fprintf(fd, ";\n"); |
965 | fprintf(fd, "\n"); |
966 | print_tabs(1, fd); |
967 | fprintf(fd, "if(*len == 0) {\n"); |
968 | print_tabs(2, fd); |
969 | fprintf(fd, "*to += ltt_align(*to, align); /* align output */\n"); |
970 | print_tabs(1, fd); |
971 | fprintf(fd, "} else {\n"); |
972 | print_tabs(2, fd); |
973 | fprintf(fd, "*len += ltt_align(*to+*len, align); /* alignment, ok to do a memcpy of it */\n"); |
974 | print_tabs(1, fd); |
975 | fprintf(fd, "}\n"); |
976 | fprintf(fd, "\n"); |
977 | |
978 | /* First, check if the type has a fixed size. If it is the case, then the size |
979 | * to write is know by the compiler : simply use a sizeof() */ |
980 | if(has_type_fixed_size(td)) { |
981 | print_tabs(1, fd); |
982 | fprintf(fd, "/* Contains only fixed size fields : use compiler sizeof() */\n"); |
983 | fprintf(fd, "\n"); |
984 | print_tabs(1, fd); |
985 | fprintf(fd, "*len += sizeof("); |
2e415130 |
986 | if(print_type(td, fd, 0, basename, field_name)) return 1; |
a3e6ce64 |
987 | fprintf(fd, ");\n"); |
988 | } else { |
989 | /* The type contains nested variable size subtypes : |
990 | * we must write field by field. */ |
991 | print_tabs(1, fd); |
992 | fprintf(fd, "/* Contains variable sized fields : must explode the structure */\n"); |
993 | fprintf(fd, "\n"); |
994 | |
995 | switch(td->type) { |
996 | case SEQUENCE: |
997 | print_tabs(1, fd); |
998 | fprintf(fd, "/* Copy members */\n"); |
999 | print_tabs(1, fd); |
1000 | fprintf(fd, "size = sizeof(\n"); |
1001 | if(print_type_write(((field_t*)td->fields.array[0])->type, |
2e415130 |
1002 | fd, 1, basename, ((field_t*)td->fields.array[0])->name)) return 1; |
a3e6ce64 |
1003 | fprintf(fd, ");\n"); |
1004 | print_tabs(1, fd); |
1005 | fprintf(fd, "*to += ltt_align(*to, size);\n"); |
1006 | print_tabs(1, fd); |
1007 | fprintf(fd, "if(buffer != NULL)\n"); |
1008 | print_tabs(2, fd); |
1009 | fprintf(fd, "memcpy(buffer+*to_base+*to, &obj->len, size);\n"); |
1010 | print_tabs(1, fd); |
1011 | fprintf(fd, "*to += size;\n"); |
1012 | fprintf(fd, "\n"); |
1013 | |
1014 | /* Write the child : varlen child or not ? */ |
1015 | if(has_type_fixed_size(((field_t*)td->fields.array[1])->type)) { |
1016 | /* Fixed size len child : use a multiplication of its size */ |
1017 | print_tabs(1, fd); |
1018 | fprintf(fd, "size = sizeof(\n"); |
1019 | if(print_type_write(((field_t*)td->fields.array[1])->type, |
2e415130 |
1020 | fd, 1, basename, ((field_t*)td->fields.array[1])->name)) return 1; |
a3e6ce64 |
1021 | fprintf(fd, ");\n"); |
1022 | print_tabs(1, fd); |
1023 | fprintf(fd, "*to += ltt_align(*to, size);\n"); |
1024 | print_tabs(1, fd); |
1025 | fprintf(fd, "size = obj->len * size;\n"); |
1026 | print_tabs(1, fd); |
1027 | fprintf(fd, "if(buffer != NULL)\n"); |
1028 | print_tabs(2, fd); |
1029 | fprintf(fd, "memcpy(buffer+*to_base+*to, obj->array, size);\n"); |
1030 | print_tabs(1, fd); |
1031 | fprintf(fd, "*to += size;\n"); |
1032 | fprintf(fd, "\n"); |
1033 | } else { |
1034 | print_tabs(1, fd); |
1035 | fprintf(fd, "/* Variable length child : iter. */\n"); |
1036 | print_tabs(1, fd); |
1037 | fprintf(fd, "for(unsigned int i=0; i<obj->len; i++) {\n"); |
1038 | if(print_type_write(((field_t*)td->fields.array[1])->type, |
2e415130 |
1039 | fd, 2, basename, ((field_t*)td->fields.array[1])->name)) return 1; |
a3e6ce64 |
1040 | print_tabs(1, fd); |
1041 | fprintf(fd, "}\n"); |
1042 | } |
1043 | fprintf(fd, "\n"); |
1044 | print_tabs(1, fd); |
1045 | fprintf(fd, "/* Realign the *to_base on arch size, set *to to 0 */\n"); |
1046 | print_tabs(1, fd); |
1047 | fprintf(fd, "*to = ltt_align(*to, sizeof(void *));\n"); |
1048 | print_tabs(1, fd); |
1049 | fprintf(fd, "*to_base = *to_base+*to;\n"); |
1050 | print_tabs(1, fd); |
1051 | fprintf(fd, "*to = 0;\n"); |
1052 | fprintf(fd, "\n"); |
1053 | fprintf(fd, "/* Put source *from just after the C sequence */\n"); |
1054 | print_tabs(1, fd); |
1055 | fprintf(fd, "*from = obj+1;\n"); |
1056 | break; |
1057 | case STRING: |
1058 | fprintf(fd, "size = strlen(obj);\n"); |
1059 | print_tabs(1, fd); |
1060 | fprintf(fd, "if(buffer != NULL)\n"); |
1061 | print_tabs(2, fd); |
1062 | fprintf(fd, "memcpy(buffer+*to_base+*to, obj, size);\n"); |
1063 | print_tabs(1, fd); |
1064 | fprintf(fd, "*to += size;\n"); |
1065 | fprintf(fd, "\n"); |
1066 | print_tabs(1, fd); |
1067 | fprintf(fd, "/* Realign the *to_base on arch size, set *to to 0 */\n"); |
1068 | print_tabs(1, fd); |
1069 | fprintf(fd, "*to = ltt_align(*to, sizeof(void *));\n"); |
1070 | print_tabs(1, fd); |
1071 | fprintf(fd, "*to_base = *to_base+*to;\n"); |
1072 | print_tabs(1, fd); |
1073 | fprintf(fd, "*to = 0;\n"); |
1074 | fprintf(fd, "\n"); |
1075 | fprintf(fd, "/* Put source *from just after the C sequence */\n"); |
1076 | print_tabs(1, fd); |
1077 | fprintf(fd, "*from = obj+1;\n"); |
1078 | break; |
1079 | case STRUCT: |
1080 | for(unsigned int i=0;i<td->fields.position;i++){ |
1081 | field_t *field = (field_t*)(td->fields.array[i]); |
1082 | type_descriptor_t *type = field->type; |
1083 | if(print_type_write(type, |
1084 | fd, 1, basename, field->name)) return 1; |
1085 | fprintf(fd, "\n"); |
1086 | } |
1087 | break; |
1088 | case UNION: |
1089 | printf("ERROR : A union CANNOT contain a variable size child.\n"); |
1090 | return 1; |
1091 | break; |
1092 | case ARRAY: |
1093 | /* Write the child : varlen child or not ? */ |
1094 | if(has_type_fixed_size(((field_t*)td->fields.array[0])->type)) { |
1095 | /* Error : if an array has a variable size, then its child must also |
1096 | * have a variable size. */ |
1097 | assert(0); |
1098 | } else { |
1099 | print_tabs(1, fd); |
1100 | fprintf(fd, "/* Variable length child : iter. */\n"); |
1101 | print_tabs(1, fd); |
1102 | fprintf(fd, "for(unsigned int i=0; i<LTTNG_ARRAY_SIZE_%s; i++) {\n", basename); |
1103 | if(print_type_write(((field_t*)td->fields.array[1])->type, |
2e415130 |
1104 | fd, 2, basename, ((field_t*)td->fields.array[1])->name)) return 1; |
a3e6ce64 |
1105 | print_tabs(1, fd); |
1106 | fprintf(fd, "}\n"); |
1107 | } |
1108 | break; |
1109 | default: |
1110 | printf("print_type_write_fct : type has no write function.\n"); |
1111 | break; |
1112 | } |
1113 | |
1114 | |
1115 | } |
1116 | |
1117 | |
1118 | /* Function footer */ |
1119 | fprintf(fd, "}\n"); |
1120 | fprintf(fd, "\n"); |
a67cd958 |
1121 | return 0; |
1122 | } |
1123 | |
1124 | |
1125 | |
47299663 |
1126 | /* Print the logging function of an event. This is the core of genevent */ |
a3e6ce64 |
1127 | int print_event_logging_function(char *basename, facility_t *fac, |
1128 | event_t *event, FILE *fd) |
47299663 |
1129 | { |
1130 | fprintf(fd, "static inline void trace_%s(\n", basename); |
1131 | for(unsigned int j = 0; j < event->fields.position; j++) { |
1132 | /* For each field, print the function argument */ |
1133 | field_t *f = (field_t*)event->fields.array[j]; |
1134 | type_descriptor_t *t = f->type; |
7e97b039 |
1135 | if(print_arg(t, fd, 2, basename, f->name)) return 1; |
47299663 |
1136 | if(j < event->fields.position-1) { |
1137 | fprintf(fd, ","); |
1138 | fprintf(fd, "\n"); |
1139 | } |
1140 | } |
1141 | if(event->fields.position == 0) { |
1142 | print_tabs(2, fd); |
1143 | fprintf(fd, "void"); |
1144 | } |
1145 | fprintf(fd,")\n"); |
1146 | fprintf(fd, "#ifndef CONFIG_LTT\n"); |
1147 | fprintf(fd, "{\n"); |
1148 | fprintf(fd, "}\n"); |
1149 | fprintf(fd,"#else\n"); |
1150 | fprintf(fd, "{\n"); |
7e97b039 |
1151 | /* Print the function variables */ |
a67cd958 |
1152 | print_tabs(1, fd); |
a3e6ce64 |
1153 | fprintf(fd, "unsigned int index;\n"); |
1154 | print_tabs(1, fd); |
1155 | fprintf(fd, "struct ltt_channel_struct *channel;\n"); |
1156 | print_tabs(1, fd); |
1157 | fprintf(fd, "struct ltt_trace_struct *trace;\n"); |
1158 | print_tabs(1, fd); |
1159 | fprintf(fd, "struct rchan_buf *relayfs_buf;\n"); |
1160 | print_tabs(1, fd); |
1161 | fprintf(fd, "void *buffer = NULL;\n"); |
1162 | print_tabs(1, fd); |
1163 | fprintf(fd, "size_t to_base = 0; /* The buffer is allocated on arch_size alignment */\n"); |
1164 | print_tabs(1, fd); |
1165 | fprintf(fd, "size_t to = 0;\n"); |
1166 | print_tabs(1, fd); |
1167 | fprintf(fd, "void *from;"); |
1168 | print_tabs(1, fd); |
1169 | fprintf(fd, "size_t len = 0;\n"); |
1170 | fprintf(fd, "\n"); |
1171 | fprintf(fd, "size_t slot_size;\n"); |
1172 | fprintf(fd, "\n"); |
1173 | fprintf(fd, "cycles_t tsc;\n"); |
1174 | fprintf(fd, "\n"); |
1175 | fprintf(fd, "size_t before_hdr_pad, size_t after_hdr_pad;\n"); |
1176 | fprintf(fd, "\n"); |
7e97b039 |
1177 | |
a3e6ce64 |
1178 | print_tabs(1, fd); |
1179 | fprintf(fd, "if(ltt_traces.num_active_traces == 0) return;\n"); |
1180 | fprintf(fd, "\n"); |
1181 | |
a67cd958 |
1182 | /* Calculate event variable len + event data alignment offset. |
7e97b039 |
1183 | * Assume that the padding for alignment starts at a void* |
a67cd958 |
1184 | * address. |
1185 | * This excludes the header size and alignment. */ |
1186 | |
a3e6ce64 |
1187 | print_tabs(1, fd); |
1188 | fprintf(fd, "/* For each field, calculate the field size. */\n"); |
1189 | print_tabs(1, fd); |
1190 | fprintf(fd, "/* size = to_base + to + len */\n"); |
1191 | print_tabs(1, fd); |
1192 | fprintf(fd, "/* Assume that the padding for alignment starts at a void*\n"); |
1193 | print_tabs(1, fd); |
1194 | fprintf(fd, "/* address. */\n"); |
1195 | fprintf(fd, "\n"); |
a67cd958 |
1196 | |
a3e6ce64 |
1197 | for(unsigned int i=0;i<event->fields.position;i++){ |
2e415130 |
1198 | field_t *field = (field_t*)(event->fields.array[i]); |
a3e6ce64 |
1199 | type_descriptor_t *type = field->type; |
1200 | if(print_type_write(type, |
1201 | fd, 1, basename, field->name)) return 1; |
1202 | fprintf(fd, "\n"); |
a67cd958 |
1203 | } |
47299663 |
1204 | |
7e97b039 |
1205 | /* Take locks : make sure the trace does not vanish while we write on |
1206 | * it. A simple preemption disabling is enough (using rcu traces). */ |
a3e6ce64 |
1207 | print_tabs(1, fd); |
1208 | fprintf(fd, "preempt_disable();\n"); |
1209 | print_tabs(1, fd); |
1210 | fprintf(fd, "ltt_nesting[smp_processor_id()]++;\n"); |
1211 | |
1212 | /* Get facility index */ |
1213 | |
1214 | if(event->per_tracefile) { |
1215 | print_tabs(1, fd); |
1216 | fprintf(fd, "index = tracefile_index;\n"); |
1217 | } else { |
1218 | print_tabs(1, fd); |
1219 | fprintf(fd, |
1220 | "index = ltt_get_index_from_facility(ltt_facility_%s_%X,\n"\ |
1221 | "\t\t\t\tevent_%s);\n", |
1222 | fac->name, fac->checksum, event->name); |
1223 | } |
1224 | fprintf(fd,"\n"); |
1225 | |
7e97b039 |
1226 | |
1227 | /* For each trace */ |
a3e6ce64 |
1228 | print_tabs(1, fd); |
1229 | fprintf(fd, "list_for_each_entry_rcu(trace, <t_traces.head, list) {\n"); |
1230 | print_tabs(2, fd); |
1231 | fprintf(fd, "if(!trace->active) continue;\n\n"); |
1232 | |
1233 | if(event->per_trace) { |
1234 | print_tabs(2, fd); |
1235 | fprintf(fd, "if(dest_trace != trace) continue;\n\n"); |
1236 | } |
1237 | |
1238 | print_tabs(2, fd); |
2e415130 |
1239 | fprintf(fd, "channel = ltt_get_channel_from_index(trace, index);\n"); |
a3e6ce64 |
1240 | print_tabs(2, fd); |
1241 | fprintf(fd, "relayfs_buf = channel->rchan->buf[channel->rchan->buf->cpu];\n"); |
1242 | fprintf(fd, "\n"); |
1243 | |
7e97b039 |
1244 | |
1245 | /* Relay reserve */ |
a3e6ce64 |
1246 | /* If error, increment event lost counter (done by ltt_reserve_slot) and |
1247 | * return */ |
1248 | print_tabs(2, fd); |
1249 | fprintf(fd, "slot_size = 0;\n"); |
1250 | print_tabs(2, fd); |
1251 | fprintf(fd, "buffer = ltt_reserve_slot(trace, relayfs_buf, to_base + to + len, &slot_size, &tsc,\n" |
1252 | "\t\t&before_hdr_pad, &after_hdr_pad);\n"); |
1253 | /* If error, return */ |
1254 | print_tabs(2, fd); |
1255 | fprintf(fd, "if(!buffer) return;\n\n"); |
7e97b039 |
1256 | |
a3e6ce64 |
1257 | /* write data : assume stack alignment is the same as struct alignment. */ |
1258 | |
1259 | for(unsigned int i=0;i<event->fields.position;i++){ |
2e415130 |
1260 | field_t *field = (field_t*)(event->fields.array[i]); |
a3e6ce64 |
1261 | type_descriptor_t *type = field->type; |
1262 | |
1263 | /* Set from */ |
1264 | print_tabs(3, fd); |
2e415130 |
1265 | fprintf(fd, "from = %s;\n", field->name); |
a3e6ce64 |
1266 | |
1267 | if(print_type_write(type, |
1268 | fd, 2, basename, field->name)) return 1; |
1269 | fprintf(fd, "\n"); |
7e97b039 |
1270 | |
a3e6ce64 |
1271 | /* Don't forget to flush pending memcpy */ |
1272 | print_tabs(2, fd); |
1273 | fprintf(fd, "/* Flush pending memcpy */\n"); |
1274 | print_tabs(2, fd); |
1275 | fprintf(fd, "if(len != 0) {\n"); |
1276 | print_tabs(3, fd); |
1277 | fprintf(fd, "memcpy(buffer+to_base+to, from, len);\n"); |
1278 | print_tabs(3, fd); |
1279 | fprintf(fd, "to += len;\n"); |
1280 | //print_tabs(3, fd); |
1281 | //fprintf(fd, "from += len;\n"); |
1282 | print_tabs(3, fd); |
1283 | fprintf(fd, "len = 0;\n"); |
1284 | print_tabs(2, fd); |
1285 | fprintf(fd, "}\n"); |
1286 | fprintf(fd, "\n"); |
1287 | } |
1288 | |
1289 | |
7e97b039 |
1290 | /* commit */ |
a3e6ce64 |
1291 | print_tabs(2, fd); |
1292 | fprintf(fd, "ltt_commit_slot(relayfs_buf, buffer, slot_size);\n\n"); |
7e97b039 |
1293 | |
a3e6ce64 |
1294 | print_tabs(1, fd); |
1295 | fprintf(fd, "}\n\n"); |
1296 | |
7e97b039 |
1297 | /* Release locks */ |
a3e6ce64 |
1298 | print_tabs(1, fd); |
1299 | fprintf(fd, "ltt_nesting[smp_processor_id()]--;\n"); |
1300 | print_tabs(1, fd); |
1301 | fprintf(fd, "preempt_enable_no_resched();\n"); |
2d2d14a7 |
1302 | |
47299663 |
1303 | fprintf(fd, "}\n"); |
1304 | fprintf(fd, "#endif //CONFIG_LTT\n\n"); |
1305 | return 0; |
1306 | } |
2d2d14a7 |
1307 | |
1308 | |
1309 | /* ltt-facility-name.h : main logging header. |
1310 | * log_header */ |
1311 | |
1312 | void print_log_header_head(facility_t *fac, FILE *fd) |
1313 | { |
1314 | fprintf(fd, "#ifndef _LTT_FACILITY_%s_H_\n", fac->capname); |
1315 | fprintf(fd, "#define _LTT_FACILITY_%s_H_\n\n", fac->capname); |
47299663 |
1316 | fprintf(fd, "\n"); |
1317 | fprintf(fd, "/* Facility activation at compile time. */\n"); |
1318 | fprintf(fd, "#ifdef CONFIG_LTT_FACILITY_%s\n\n", fac->capname); |
2d2d14a7 |
1319 | } |
1320 | |
1321 | |
1322 | |
2d2d14a7 |
1323 | int print_log_header_types(facility_t *fac, FILE *fd) |
1324 | { |
1325 | sequence_t *types = &fac->named_types.values; |
1326 | fprintf(fd, "/* Named types */\n"); |
1327 | fprintf(fd, "\n"); |
1328 | |
1329 | for(unsigned int i = 0; i < types->position; i++) { |
1330 | /* For each named type, print the definition */ |
1331 | if((print_type_declaration(types->array[i], fd, |
1332 | 0, "", ""))) return 1; |
1333 | } |
1334 | return 0; |
1335 | } |
1336 | |
1337 | int print_log_header_events(facility_t *fac, FILE *fd) |
1338 | { |
47299663 |
1339 | sequence_t *events = &fac->events; |
1340 | char basename[PATH_MAX]; |
1341 | unsigned int facname_len; |
1342 | |
1343 | strncpy(basename, fac->name, PATH_MAX); |
1344 | facname_len = strlen(basename); |
1345 | strncat(basename, "_", PATH_MAX-facname_len); |
1346 | facname_len = strlen(basename); |
1347 | |
1348 | for(unsigned int i = 0; i < events->position; i++) { |
1349 | event_t *event = (event_t*)events->array[i]; |
1350 | strncpy(&basename[facname_len], event->name, PATH_MAX-facname_len); |
1351 | |
1352 | /* For each event, print structure, and then logging function */ |
1353 | fprintf(fd, "/* Event %s structures */\n", |
1354 | event->name); |
1355 | for(unsigned int j = 0; j < event->fields.position; j++) { |
1356 | /* For each unnamed type, print the definition */ |
1357 | field_t *f = (field_t*)event->fields.array[j]; |
1358 | type_descriptor_t *t = f->type; |
1359 | if(t->type_name == NULL) |
1360 | if((print_type_declaration(t, fd, 0, basename, f->name))) return 1; |
1361 | } |
1362 | fprintf(fd, "\n"); |
2d2d14a7 |
1363 | |
47299663 |
1364 | fprintf(fd, "/* Event %s logging function */\n", |
1365 | event->name); |
1366 | |
a3e6ce64 |
1367 | if(print_event_logging_function(basename, fac, event, fd)) return 1; |
47299663 |
1368 | |
1369 | fprintf(fd, "\n"); |
1370 | } |
1371 | |
2d2d14a7 |
1372 | return 0; |
1373 | } |
1374 | |
1375 | |
1376 | void print_log_header_tail(facility_t *fac, FILE *fd) |
1377 | { |
47299663 |
1378 | fprintf(fd, "#endif //CONFIG_LTT_FACILITY_%s\n\n", fac->capname); |
2d2d14a7 |
1379 | fprintf(fd, "#endif //_LTT_FACILITY_%s_H_\n",fac->capname); |
1380 | } |
1381 | |
1382 | int print_log_header(facility_t *fac) |
1383 | { |
1384 | char filename[PATH_MAX]; |
1385 | unsigned int filename_size = 0; |
1386 | FILE *fd; |
1387 | dprintf("%s\n", fac->name); |
1388 | |
1389 | strcpy(filename, "ltt-facility-"); |
1390 | filename_size = strlen(filename); |
1391 | |
1392 | strncat(filename, fac->name, PATH_MAX - filename_size); |
1393 | filename_size = strlen(filename); |
1394 | |
1395 | strncat(filename, ".h", PATH_MAX - filename_size); |
1396 | filename_size = strlen(filename); |
1397 | |
1398 | |
1399 | fd = fopen(filename, "w"); |
1400 | if(fd == NULL) { |
1401 | printf("Error opening file %s for writing : %s\n", |
1402 | filename, strerror(errno)); |
1403 | return errno; |
1404 | } |
1405 | |
1406 | /* Print file head */ |
1407 | print_log_header_head(fac, fd); |
1408 | |
1409 | /* print named types in declaration order */ |
1410 | if(print_log_header_types(fac, fd)) return 1; |
1411 | |
1412 | /* Print events */ |
1413 | if(print_log_header_events(fac, fd)) return 1; |
1414 | |
1415 | /* Print file tail */ |
1416 | print_log_header_tail(fac, fd); |
1417 | |
1418 | |
1419 | fclose(fd); |
1420 | |
1421 | return 0; |
1422 | } |
1423 | |
1424 | |
1425 | /* ltt-facility-id-name.h : facility id. |
1426 | * log_id_header */ |
1427 | int print_id_header(facility_t *fac) |
1428 | { |
1429 | char filename[PATH_MAX]; |
1430 | unsigned int filename_size = 0; |
1431 | FILE *fd; |
1432 | dprintf("%s\n", fac->name); |
1433 | |
1434 | strcpy(filename, "ltt-facility-id-"); |
1435 | filename_size = strlen(filename); |
1436 | |
1437 | strncat(filename, fac->name, PATH_MAX - filename_size); |
1438 | filename_size = strlen(filename); |
1439 | |
1440 | strncat(filename, ".h", PATH_MAX - filename_size); |
1441 | filename_size = strlen(filename); |
1442 | |
1443 | |
1444 | fd = fopen(filename, "w"); |
1445 | if(fd == NULL) { |
1446 | printf("Error opening file %s for writing : %s\n", |
1447 | filename, strerror(errno)); |
1448 | return errno; |
1449 | } |
1450 | |
1451 | fclose(fd); |
1452 | |
1453 | return 0; |
1454 | } |
1455 | |
1456 | |
1457 | /* ltt-facility-loader-name.h : facility specific loader info. |
1458 | * loader_header */ |
1459 | int print_loader_header(facility_t *fac) |
1460 | { |
1461 | char filename[PATH_MAX]; |
1462 | unsigned int filename_size = 0; |
1463 | FILE *fd; |
1464 | dprintf("%s\n", fac->name); |
1465 | |
1466 | strcpy(filename, "ltt-facility-loader-"); |
1467 | filename_size = strlen(filename); |
1468 | |
1469 | strncat(filename, fac->name, PATH_MAX - filename_size); |
1470 | filename_size = strlen(filename); |
1471 | |
1472 | strncat(filename, ".h", PATH_MAX - filename_size); |
1473 | filename_size = strlen(filename); |
1474 | |
1475 | |
1476 | fd = fopen(filename, "w"); |
1477 | if(fd == NULL) { |
1478 | printf("Error opening file %s for writing : %s\n", |
1479 | filename, strerror(errno)); |
1480 | return errno; |
1481 | } |
1482 | |
1483 | fclose(fd); |
1484 | |
1485 | return 0; |
1486 | } |
1487 | |
1488 | /* ltt-facility-loader-name.c : generic faciilty loader |
1489 | * loader_c */ |
1490 | int print_loader_c(facility_t *fac) |
1491 | { |
1492 | char filename[PATH_MAX]; |
1493 | unsigned int filename_size = 0; |
1494 | FILE *fd; |
1495 | dprintf("%s\n", fac->name); |
1496 | |
1497 | strcpy(filename, "ltt-facility-loader-"); |
1498 | filename_size = strlen(filename); |
1499 | |
1500 | strncat(filename, fac->name, PATH_MAX - filename_size); |
1501 | filename_size = strlen(filename); |
1502 | |
1503 | strncat(filename, ".c", PATH_MAX - filename_size); |
1504 | filename_size = strlen(filename); |
1505 | |
1506 | |
1507 | fd = fopen(filename, "w"); |
1508 | if(fd == NULL) { |
1509 | printf("Error opening file %s for writing : %s\n", |
1510 | filename, strerror(errno)); |
1511 | return errno; |
1512 | } |
1513 | |
1514 | |
1515 | fclose(fd); |
1516 | |
1517 | return 0; |
1518 | } |
1519 | |
1520 | |
1521 | |
92d82357 |
1522 | /* open facility */ |
1523 | /* code taken from ltt_facility_open in ltt/facility.c in lttv */ |
1524 | |
1525 | /***************************************************************************** |
1526 | *Function name |
1527 | * ltt_facility_open : open facilities |
1528 | *Input params |
1529 | * pathname : the path name of the facility |
1530 | * |
1531 | * Open the facility corresponding to the right checksum. |
1532 | * |
1533 | *returns the facility on success, NULL on error. |
1534 | ****************************************************************************/ |
1535 | facility_t *ltt_facility_open(char * pathname) |
1536 | { |
1537 | int ret = 0; |
1538 | char *token; |
1539 | parse_file_t in; |
1540 | facility_t * fac = NULL; |
92d82357 |
1541 | char buffer[BUFFER_SIZE]; |
1542 | int generated = FALSE; |
1543 | |
1544 | in.buffer = &(buffer[0]); |
1545 | in.lineno = 0; |
1546 | in.error = error_callback; |
1547 | in.name = pathname; |
1548 | in.unget = 0; |
1549 | |
1550 | in.fp = fopen(in.name, "r"); |
1551 | if(in.fp == NULL) { |
1552 | ret = 1; |
1553 | goto open_error; |
1554 | } |
1555 | |
1556 | while(1){ |
1557 | token = getToken(&in); |
1558 | if(in.type == ENDFILE) break; |
1559 | |
1560 | if(generated) { |
1561 | printf("More than one facility in the file. Only using the first one.\n"); |
1562 | break; |
1563 | } |
1564 | |
1565 | if(strcmp(token, "<")) in.error(&in,"not a facility file"); |
1566 | token = getName(&in); |
1567 | |
1568 | if(strcmp("facility",token) == 0) { |
1569 | fac = malloc(sizeof(facility_t)); |
1570 | fac->name = NULL; |
1571 | fac->description = NULL; |
1572 | sequence_init(&(fac->events)); |
1573 | table_init(&(fac->named_types)); |
1574 | sequence_init(&(fac->unnamed_types)); |
1575 | |
1576 | parseFacility(&in, fac); |
1577 | |
1578 | //check if any namedType is not defined |
1579 | checkNamedTypesImplemented(&fac->named_types); |
1580 | |
2e415130 |
1581 | generateChecksum(fac->name, &fac->checksum, &fac->events); |
a67cd958 |
1582 | |
92d82357 |
1583 | generated = TRUE; |
1584 | } |
1585 | else { |
1586 | printf("facility token was expected in file %s\n", in.name); |
1587 | ret = 1; |
1588 | goto parse_error; |
1589 | } |
1590 | } |
1591 | |
1592 | parse_error: |
1593 | fclose(in.fp); |
1594 | open_error: |
1595 | |
1596 | if(!generated) { |
1597 | printf("Cannot find facility %s\n", pathname); |
1598 | fac = NULL; |
1599 | } |
1600 | |
1601 | return fac; |
1602 | } |
1603 | |
1604 | /* Close the facility */ |
1605 | void ltt_facility_close(facility_t *fac) |
1606 | { |
1607 | free(fac->name); |
1608 | free(fac->capname); |
1609 | free(fac->description); |
1610 | freeEvents(&fac->events); |
1611 | sequence_dispose(&fac->events); |
1612 | freeNamedType(&fac->named_types); |
1613 | table_dispose(&fac->named_types); |
1614 | freeTypes(&fac->unnamed_types); |
1615 | sequence_dispose(&fac->unnamed_types); |
1616 | free(fac); |
1617 | } |
1618 | |
1619 | |
1620 | /* Show help */ |
1621 | void show_help(int argc, char ** argv) |
1622 | { |
1623 | printf("Genevent help : \n"); |
1624 | printf("\n"); |
1625 | printf("Use %s name.xml\n", argv[0]); |
1626 | printf("to create :\n"); |
1627 | printf("ltt-facility-name.h\n"); |
1628 | printf("ltt-facility-id-name.h\n"); |
1629 | printf("ltt-facility-loader-name.h\n"); |
1630 | printf("ltt-facility-loader-name.c\n"); |
1631 | printf("In the current directory.\n"); |
1632 | printf("\n"); |
1633 | } |
1634 | |
1635 | /* Parse program arguments */ |
1636 | /* Return values : |
1637 | * 0 : continue program |
1638 | * -1 : stop program, return 0 |
1639 | * > 0 : stop program, return value as exit. |
1640 | */ |
1641 | int check_args(int argc, char **argv) |
1642 | { |
1643 | if(argc < 2) { |
1644 | printf("Not enough arguments\n"); |
1645 | show_help(argc, argv); |
1646 | return EINVAL; |
1647 | } |
1648 | |
1649 | if(strcmp(argv[1], "-h") == 0) { |
1650 | show_help(argc, argv); |
1651 | return -1; |
1652 | } |
1653 | |
1654 | return 0; |
1655 | } |
1656 | |
1657 | int main(int argc, char **argv) |
1658 | { |
1659 | int err = 0; |
1660 | facility_t *fac; |
1661 | |
1662 | err = check_args(argc, argv); |
1663 | if(err > 0) return err; |
1664 | else if(err < 0) return 0; |
1665 | |
1666 | /* open the facility */ |
1667 | fac = ltt_facility_open(argv[1]); |
1668 | if(fac == NULL) { |
1669 | printf("Error opening file %s for reading : %s\n", |
1670 | argv[1], strerror(errno)); |
1671 | return errno; |
1672 | } |
1673 | |
1674 | /* generate the output C files */ |
1675 | |
1676 | |
2d2d14a7 |
1677 | /* ltt-facility-name.h : main logging header. |
1678 | * log_header */ |
1679 | err = print_log_header(fac); |
1680 | if(err) return err; |
92d82357 |
1681 | |
2d2d14a7 |
1682 | /* ltt-facility-id-name.h : facility id. |
1683 | * log_id_header */ |
1684 | err = print_id_header(fac); |
1685 | if(err) return err; |
92d82357 |
1686 | |
2d2d14a7 |
1687 | /* ltt-facility-loader-name.h : facility specific loader info. |
1688 | * loader_header */ |
1689 | err = print_loader_header(fac); |
1690 | if(err) return err; |
1691 | |
1692 | /* ltt-facility-loader-name.c : generic faciilty loader |
1693 | * loader_c */ |
1694 | err = print_loader_c(fac); |
1695 | if(err) return err; |
92d82357 |
1696 | |
1697 | /* close the facility */ |
1698 | ltt_facility_close(fac); |
1699 | |
1700 | return 0; |
1701 | } |
1702 | |
1703 | |