3 genevent.c: Generate helper declarations and functions to trace events
4 from an event description file.
6 Copyright (C) 2002, Xianxiu Yang
7 Copyright (C) 2002, Michel Dagenais
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; version 2 of the License.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 /* This program reads the ".event" event definitions input files
24 specified as command line arguments and generates corresponding
25 ".c" and ".h" files required to trace such events in the kernel.
27 The program uses a very simple tokenizer, called from a hand written
28 recursive descent parser to fill a data structure describing the events.
29 The result is a sequence of events definitions which refer to type
32 A table of named types is maintained to allow refering to types by name
33 when the same type is used at several places. Finally a sequence of
34 all types is maintained to facilitate the freeing of all type
35 information when the processing of an ".event" file is finished. */
42 #include <linux/errno.h>
48 /* Named types may be referenced from anywhere */
52 int main(int argc
, char** argv
)
56 char buffer
[BUFFER_SIZE
];
60 printf("At least one event definition file is needed\n");
65 in
.error
= error_callback
;
67 for(i
= 1 ; i
< argc
; i
++) {
69 in
.name
= allocAndCopy(argv
[i
]);
71 in
.fp
= fopen(in
.name
, "r");
73 in
.error(&in
,"cannot open facility input file");
77 token
= getToken(&in
);
78 if(in
.type
== ENDFILE
) break;
80 if(strcmp(token
, "<")) in
.error(&in
,"not a facility file");
83 if(strcmp("facility",token
) == 0) {
84 fac
= memAlloc(sizeof(facility
));
86 fac
->description
= NULL
;
87 sequence_init(&(fac
->events
));
88 table_init(&(fac
->named_types
));
89 sequence_init(&(fac
->unnamed_types
));
91 parseFacility(&in
, fac
);
93 //check if any namedType is not defined
94 checkNamedTypesImplemented(&fac
->named_types
);
96 else in
.error(&in
,"facility token was expected");
98 generateFile(argv
[i
]);
101 free(fac
->description
);
102 freeEvents(&fac
->events
);
103 sequence_dispose(&fac
->events
);
104 freeNamedType(&fac
->named_types
);
105 table_dispose(&fac
->named_types
);
106 freeTypes(&fac
->unnamed_types
);
107 sequence_dispose(&fac
->unnamed_types
);
119 /*****************************************************************************
121 * generateFile : generate .c and .h file
123 * name : name of event definition file
124 ****************************************************************************/
125 void generateFile(char *name
){
126 char *loadName
, *hName
, *hIdName
, *cName
, *tmp
, *tmp2
;
127 FILE * lFp
, *hFp
, *iFp
, *cFp
;
129 unsigned long checksum
=0;
131 //remove .xml if it exists
132 tmp
= &name
[strlen(name
)-4];
133 if(strcmp(tmp
, ".xml") == 0){
137 tmp
= strrchr(name
,'/');
144 loadName
= appendString("ltt-facility-loader-", tmp
);
145 tmp2
= appendString(loadName
,".h");
148 hName
= appendString("ltt-facility-", tmp
);
149 tmp2
= appendString(hName
,".h");
152 hIdName
= appendString("ltt-facility-id-", tmp
);
153 tmp2
= appendString(hIdName
,".h");
156 cName
= appendString("ltt-facility-loader-", tmp
);
157 tmp2
= appendString(cName
,".c");
160 lFp
= fopen(loadName
,"w");
162 printf("Cannot open the file : %s\n",loadName
);
166 hFp
= fopen(hName
,"w");
168 printf("Cannot open the file : %s\n",hName
);
172 iFp
= fopen(hIdName
,"w");
174 printf("Cannot open the file : %s\n",hIdName
);
178 cFp
= fopen(cName
,"w");
180 printf("Cannot open the file : %s\n",cName
);
189 generateChecksum(fac
->name
, &checksum
, &(fac
->events
));
191 /* generate .h file, event enumeration then structures and functions */
192 fprintf(iFp
, "#ifndef _LTT_FACILITY_ID_%s_H_\n",fac
->capname
);
193 fprintf(iFp
, "#define _LTT_FACILITY_ID_%s_H_\n\n",fac
->capname
);
194 fprintf(iFp
, "#ifdef CONFIG_LTT\n");
195 generateEnumEvent(iFp
, fac
->name
, &nbEvent
, checksum
);
196 fprintf(iFp
, "#endif //CONFIG_LTT\n");
197 fprintf(iFp
, "#endif //_LTT_FACILITY_ID_%s_H_\n",fac
->capname
);
200 fprintf(hFp
, "#ifndef _LTT_FACILITY_%s_H_\n",fac
->capname
);
201 fprintf(hFp
, "#define _LTT_FACILITY_%s_H_\n\n",fac
->capname
);
202 //fprintf(hFp, "#ifdef CONFIG_LTT\n");
203 generateTypeDefs(hFp
, fac
->name
);
204 generateStructFunc(hFp
, fac
->name
,checksum
);
205 //fprintf(hFp, "#endif //CONFIG_LTT\n");
206 fprintf(hFp
, "#endif //_LTT_FACILITY_%s_H_\n",fac
->capname
);
208 /* generate .h file, calls to register the facility at init time */
209 generateLoaderfile(lFp
,fac
->name
,nbEvent
,checksum
,fac
->capname
);
211 // create ltt-facility-loader-facname.c
212 generateCfile(cFp
, tmp
);
222 /*****************************************************************************
224 * generateEnumEvent : output event enum to .h file
226 * fp : file to be written to
227 * facName : name of facility
229 * nbEvent : number of events in the facility
230 ****************************************************************************/
231 void generateEnumEvent(FILE *fp
, char *facName
, int * nbEvent
, unsigned long checksum
) {
234 fprintf(fp
,"#include <linux/ltt-facilities.h>\n\n");
236 fprintf(fp
,"/**** facility handle ****/\n\n");
237 fprintf(fp
,"extern ltt_facility_t ltt_facility_%s_%X;\n",facName
, checksum
);
238 fprintf(fp
,"extern ltt_facility_t ltt_facility_%s;\n\n\n",facName
, checksum
);
240 fprintf(fp
,"/**** event type ****/\n\n");
241 fprintf(fp
,"enum %s_event {\n",facName
);
243 for(pos
= 0; pos
< fac
->events
.position
;pos
++) {
244 fprintf(fp
,"\tevent_%s", ((event
*)(fac
->events
.array
[pos
]))->name
);
245 if(pos
!= fac
->events
.position
-1) fprintf(fp
,",\n");
247 fprintf(fp
,"\n};\n\n\n");
249 // fprintf(fp,"/**** number of events in the facility ****/\n\n");
250 // fprintf(fp,"int nbEvents_%s = %d;\n\n\n",facName, fac->events.position);
251 *nbEvent
= fac
->events
.position
;
255 /*****************************************************************************
257 * printStruct : Generic struct printing function
259 * fp : file to be written to
260 * len : number of fields
261 * array : array of field info
262 * name : basic struct name
263 * facName : name of facility
264 * whichTypeFirst : struct or array/sequence first
265 * hasStrSeq : string or sequence present?
266 * structCount : struct postfix
267 ****************************************************************************/
270 printStruct(FILE * fp
, int len
, void ** array
, char * name
, char * facName
,
271 int * whichTypeFirst
, int * hasStrSeq
, int * structCount
,
272 type_descriptor
*type
)
277 type_descriptor
* td
;
279 for (pos
= 0; pos
< len
; pos
++) {
280 fld
= (field
*)array
[pos
];
282 if( td
->type
== STRING
|| td
->type
== SEQUENCE
||
286 // if (*whichTypeFirst == 0) {
287 // *whichTypeFirst = 1; //struct first
292 fprintf(fp
,"struct %s_%s",name
, facName
);
294 fprintf(fp
, "_%d {\n",++*structCount
);
299 fprintf(fp
, "\t%s %s; /* %s */\n",
300 getTypeStr(td
),fld
->name
,fld
->description
);
303 if (*whichTypeFirst
== 0) {
304 //string or sequence or array first
309 fprintf(fp
,"} __attribute__ ((packed));\n\n");
317 if(type
->alignment
== 0)
318 fprintf(fp
,"} __attribute__ ((packed));\n\n");
320 if(type
->alignment
!= 1 && type
->alignment
!= 2
321 && type
->alignment
!= 4 && type
->alignment
!= 8) {
322 printf("Wrong alignment %i, using packed.\n", type
->alignment
);
323 fprintf(fp
,"} __attribute__ ((packed));\n\n");
325 fprintf(fp
,"} __attribute__ ((aligned(%i)));\n\n", type
->alignment
);
331 /*****************************************************************************
333 * generateHfile : Create the typedefs
335 * fp : file to be written to
336 ****************************************************************************/
338 generateTypeDefs(FILE * fp
, char *facName
)
342 fprintf(fp
,"#include <linux/types.h>\n");
343 fprintf(fp
,"#include <linux/spinlock.h>\n");
344 fprintf(fp
,"#include <linux/ltt/ltt-facility-id-%s.h>\n\n", facName
);
345 fprintf(fp
,"#include <linux/ltt-core.h>\n");
348 fprintf(fp
, "/**** Basic Type Definitions ****/\n\n");
350 for (pos
= 0; pos
< fac
->named_types
.values
.position
; pos
++) {
351 type_descriptor
* type
=
352 (type_descriptor
*)fac
->named_types
.values
.array
[pos
];
353 printStruct(fp
, type
->fields
.position
, type
->fields
.array
,
354 "", type
->type_name
, &tmp
, &tmp
, NULL
);
355 fprintf(fp
, "typedef struct _%s %s;\n\n",
356 type
->type_name
, type
->type_name
);
362 /*****************************************************************************
364 * generateEnumDefinition: generate enum definition if it exists
366 * fp : file to be written to
368 ****************************************************************************/
369 void generateEnumDefinition(FILE * fp
, type_descriptor
* type
){
372 if(type
->already_printed
) return;
374 fprintf(fp
,"enum {\n");
375 for(pos
= 0; pos
< type
->labels
.position
; pos
++){
376 fprintf(fp
,"\tLTT_ENUM_%s", type
->labels
.array
[pos
]);
377 if (pos
!= type
->labels
.position
- 1) fprintf(fp
,",");
378 if(type
->labels_description
.array
[pos
] != NULL
)
379 fprintf(fp
,"\t/* %s */\n",type
->labels_description
.array
[pos
]);
383 fprintf(fp
,"};\n\n\n");
385 type
->already_printed
= 1;
388 /*****************************************************************************
390 * generateStrucTFunc: output structure and function to .h file
392 * fp : file to be written to
393 * facName : name of facility
394 ****************************************************************************/
395 void generateStructFunc(FILE * fp
, char * facName
, unsigned long checksum
){
398 type_descriptor
* td
;
400 int hasStrSeq
, flag
, structCount
, seqCount
,strCount
, whichTypeFirst
=0;
402 for(pos
= 0; pos
< fac
->events
.position
; pos
++){
403 ev
= (event
*) fac
->events
.array
[pos
];
404 //yxx if(ev->nested)continue;
405 fprintf(fp
,"/**** structure and trace function for event: %s ****/\n\n",
407 //if(ev->type == 0){ // event without type
408 // fprintf(fp,"static inline void trace_%s_%s(void){\n",facName,ev->name);
409 // fprintf(fp,"\tltt_log_event(ltt_facility_%s_%X, event_%s, 0, NULL);\n",
410 // facName,checksum,ev->name);
411 // fprintf(fp,"};\n\n\n");
415 //if fields contain enum, print out enum definition
416 //MD : fixed in generateEnumDefinition to do not print the same enum
419 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
420 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
421 if(fld
->type
->type
== ENUM
) generateEnumDefinition(fp
, fld
->type
);
424 //default: no string, array or sequence in the event
429 //structure for kernel
431 printStruct(fp
, ev
->type
->fields
.position
, ev
->type
->fields
.array
,
432 ev
->name
, facName
, &whichTypeFirst
, &hasStrSeq
, &structCount
,
436 //trace function : function name and parameters : stub function.
439 fprintf(fp
, "#ifndef CONFIG_LTT\n");
440 fprintf(fp
,"static inline void trace_%s_%s(",facName
,ev
->name
);
444 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
445 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
447 if(td
->type
== ARRAY
){
448 fprintf(fp
,"%s * %s",getTypeStr(td
), fld
->name
);
449 }else if(td
->type
== STRING
){
450 fprintf(fp
,"short int strlength_%d, %s * %s",
451 ++strCount
, getTypeStr(td
), fld
->name
);
452 }else if(td
->type
== SEQUENCE
){
453 fprintf(fp
,"%s seqlength_%d, %s * %s",
454 uintOutputTypes
[td
->size
], ++seqCount
,getTypeStr(td
), fld
->name
);
455 }else fprintf(fp
,"%s %s",getTypeStr(td
), fld
->name
);
456 if(pos1
!= ev
->type
->fields
.position
- 1) fprintf(fp
,", ");
458 fprintf(fp
,")\n{\n");
460 fprintf(fp
,"#else\n");
462 //trace function : function name and parameters
465 fprintf(fp
,"static inline void trace_%s_%s(",facName
,ev
->name
);
469 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
470 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
472 if(td
->type
== ARRAY
){
473 fprintf(fp
,"%s * %s",getTypeStr(td
), fld
->name
);
474 }else if(td
->type
== STRING
){
475 fprintf(fp
,"short int strlength_%d, %s * %s",
476 ++strCount
, getTypeStr(td
), fld
->name
);
477 }else if(td
->type
== SEQUENCE
){
478 fprintf(fp
,"%s seqlength_%d, %s * %s",
479 uintOutputTypes
[td
->size
], ++seqCount
,getTypeStr(td
), fld
->name
);
480 }else fprintf(fp
,"%s %s",getTypeStr(td
), fld
->name
);
481 if(pos1
!= ev
->type
->fields
.position
- 1) fprintf(fp
,", ");
483 fprintf(fp
,")\n{\n");
488 // MD no more need. fprintf(fp,"\tchar buff[buflength];\n");
489 // write directly to the channel
490 fprintf(fp
, "\tint length;\n");
491 fprintf(fp
, "\tunsigned int index;\n");
492 fprintf(fp
, "\tstruct ltt_channel_struct *channel;\n");
493 fprintf(fp
, "\tstruct ltt_trace_struct *trace;\n");
494 fprintf(fp
, "\tunsigned long _flags;\n");
495 fprintf(fp
, "\tvoid *buff;\n");
496 fprintf(fp
, "\tvoid *offset_ptr;\n");
497 fprintf(fp
, "\tunsigned int header_length;\n");
498 fprintf(fp
, "\tunsigned int event_length;\n");
499 fprintf(fp
, "\tint resret;\n");
500 fprintf(fp
, "\tunsigned char _offset;\n");
501 fprintf(fp
, "\tunsigned char length_offset;\n");
502 fprintf(fp
, "\tstruct rchan_buf *buf;\n");
505 fprintf(fp
, "\tstruct %s_%s_1* __1;\n\n", ev
->name
, facName
);
507 /* Warning : this is done prior to taking locks :
508 * setting this value must be done at the end of the trace activation.
509 * (we don't care for trace removal, as the list of traces is protected : it
510 * just won't iterate on any trace). */
512 "\tif(ltt_traces.num_active_traces == 0) return;\n\n");
514 fprintf(fp
, "\t/* Disable interrupts. */\n");
515 fprintf(fp
, "\tlocal_irq_save(_flags);\n");
516 fprintf(fp
, "\tpreempt_disable();\n\n");
518 fprintf(fp
, "\tltt_nesting[smp_processor_id()]++;\n");
519 fprintf(fp
, "\tbarrier();\n");
520 fprintf(fp
, "\tif(ltt_nesting[smp_processor_id()] > 1) goto unlock;\n");
521 fprintf(fp
, "\tspin_lock(<t_traces.locks[smp_processor_id()]);\n\n");
524 "\tindex = ltt_get_index_from_facility(ltt_facility_%s_%X,\n"\
525 "\t\t\t\tevent_%s);\n",
526 facName
, checksum
, ev
->name
);
530 fprintf(fp
, "\tlist_for_each_entry(trace, <t_traces.head, list) {\n");
531 fprintf(fp
, "\t\tif(!trace->active) continue;\n\n");
533 //length of buffer : length of all structures
534 fprintf(fp
,"\t\tlength = 0;\n");
535 fprintf(fp
,"\t\tlength_offset = 0;\n");
536 // if(ev->type == 0) fprintf(fp, "0");
538 fprintf(fp
, "\t\tchannel = ltt_get_channel_from_index(trace, index);\n");
539 fprintf(fp
, "\t\tbuf = channel->rchan->buf[smp_processor_id()];\n");
540 /* Warning : not atomic reservation : event size depends on the current
541 * address for alignment */
543 fprintf(fp
, "\t\theader_length = "
544 "ltt_get_event_header_size(trace, channel,"
545 "buf->data + buf->offset, &_offset);\n");
547 for(pos1
=0;pos1
<structCount
;pos1
++){
549 if(ev
->type
->alignment
> 1) {
550 fprintf(fp
,"\t\tlength_offset+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1) ;\n",
551 ev
->type
->alignment
, ev
->type
->alignment
, ev
->type
->alignment
);
553 fprintf(fp
,"\t\tlength+=sizeof(struct %s_%s_%d);\n",ev
->name
,
555 // if(pos1 != structCount-1) fprintf(fp," + ");
558 //length of buffer : length of all arrays, sequences and strings
563 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
564 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
566 if(td
->type
== SEQUENCE
|| td
->type
==STRING
|| td
->type
==ARRAY
){
567 if(td
->type
== SEQUENCE
) {
568 if(td
->alignment
> 1) {
569 fprintf(fp
,"\t\tlength_offset+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1)) ;\n",
570 td
->alignment
, td
->alignment
, td
->alignment
);
573 "\t\tlength+=sizeof(%s) + (sizeof(%s) * seqlength_%d);\n",
574 uintOutputTypes
[td
->size
], getTypeStr(td
), ++seqCount
);
575 } else if(td
->type
==STRING
) {
576 if(td
->alignment
> 1) {
577 fprintf(fp
,"\t\tlength_offset+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1)) ;\n",
578 td
->alignment
, td
->alignment
, td
->alignment
);
580 fprintf(fp
,"length+=strlength_%d + 1;\n",
583 else if(td
->type
==ARRAY
) {
584 if(td
->alignment
> 1) {
585 fprintf(fp
,"\t\tlength_offset+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
586 td
->alignment
, td
->alignment
, td
->alignment
);
588 fprintf(fp
,"\t\tlength+=sizeof(%s) * %d;\n",
589 getTypeStr(td
),td
->size
);
590 if(structCount
== 0) flag
= 1;
596 fprintf(fp
, "\t\tevent_length = _offset + header_length + "
597 "length_offset + length;\n");
599 /* Reserve the channel */
600 fprintf(fp
, "\t\tbuff = relay_reserve(channel->rchan, event_length, &resret);\n");
601 fprintf(fp
, "\t\tif(buff == NULL) {\n");
602 fprintf(fp
, "\t\t\t/* Buffer is full*/\n");
603 fprintf(fp
, "\t\t\t/* for debug BUG(); */\n"); // DEBUG!
604 fprintf(fp
, "\t\t\tchannel->events_lost[smp_processor_id()]++;\n");
605 fprintf(fp
, "\t\t\tbreak;\n"); /* don't commit a NULL reservation! */
606 fprintf(fp
, "\t\t}\n");
609 fprintf(fp
, "\t\tif(resret == 1) {\n");
610 fprintf(fp
, "printk(\"f%%lu e\%%u \", ltt_facility_%s_%X, event_%s);",
611 facName
, checksum
, ev
->name
);
612 fprintf(fp
, "\t\t}\n");
614 /* Write the header */
616 fprintf(fp
, "\t\tltt_write_event_header(trace, channel, buff, \n"
617 "\t\t\t\tltt_facility_%s_%X, event_%s, length, _offset);\n",
618 facName
, checksum
, ev
->name
);
620 fprintf(fp
, "\t\tchar *ptr = (char*)buff + _offset + header_length;\n");
623 //declare a char pointer if needed : starts at the end of the structs.
624 //if(structCount + hasStrSeq > 1) {
625 // fprintf(fp,"\t\tchar * ptr = (char*)buff + header_length");
626 // for(pos1=0;pos1<structCount;pos1++){
627 // fprintf(fp," + sizeof(struct %s_%s_%d)",ev->name, facName,pos1+1);
629 // if(structCount + hasStrSeq > 1) fprintf(fp,";\n");
632 // Declare an alias pointer of the struct type to the beginning
633 // of the reserved area, just after the event header.
635 if(ev
->type
->alignment
> 1) {
636 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
637 ev
->type
->alignment
, ev
->type
->alignment
, ev
->type
->alignment
);
640 fprintf(fp
, "\t\t__1 = (struct %s_%s_1 *)(ptr);\n",
643 //allocate memory for new struct and initialize it
644 //if(whichTypeFirst == 1){ //struct first
645 //for(pos1=0;pos1<structCount;pos1++){
646 // if(pos1==0) fprintf(fp,
647 // "\tstruct %s_%s_1 * __1 = (struct %s_%s_1 *)buff;\n",
648 // ev->name, facName,ev->name, facName);
649 //MD disabled else fprintf(fp,
650 // "\tstruct %s_%s_%d __%d;\n",
651 // ev->name, facName,pos1+1,pos1+1);
653 //}else if(whichTypeFirst == 2){
654 // for(pos1=0;pos1<structCount;pos1++)
655 // fprintf(fp,"\tstruct %s_%s_%d __%d;\n",
656 // ev->name, facName,pos1+1,pos1+1);
660 if(structCount
) fprintf(fp
,"\t\t//initialize structs\n");
664 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
665 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
667 if(td
->type
!= ARRAY
&& td
->type
!= SEQUENCE
&& td
->type
!= STRING
){
671 // if(structCount > 1) fprintf(fp,"\n");
673 fprintf(fp
, "\t\t__1->%s = %s;\n", fld
->name
, fld
->name
);
675 //if(structCount == 1 && whichTypeFirst == 1)
676 // fprintf(fp, "\t__1->%s = %s;\n",fld->name,fld->name );
678 // fprintf(fp, "\t__%d.%s = %s;\n",structCount ,fld->name,fld->name);
682 if(structCount
) fprintf(fp
,"\n");
683 //set ptr to the end of first struct if needed;
684 //if(structCount + hasStrSeq > 1){
685 // fprintf(fp,"\n\t\t//set ptr to the end of the first struct\n");
686 // fprintf(fp,"\t\tptr += sizeof(struct %s_%s_1);\n\n",ev->name, facName);
689 //copy struct, sequence and string to buffer
695 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
696 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
698 // if(td->type != STRING && td->type != SEQUENCE && td->type != ARRAY){
699 // if(flag == 0) structCount++;
701 // if((structCount > 1 || whichTypeFirst == 2) && flag == 1){
702 // assert(0); // MD : disabled !
703 // fprintf(fp,"\t//copy struct to buffer\n");
704 // fprintf(fp,"\tmemcpy(ptr, &__%d, sizeof(struct %s_%s_%d));\n",
705 // structCount, ev->name, facName,structCount);
706 // fprintf(fp,"\tptr += sizeof(struct %s_%s_%d);\n\n",
707 // ev->name, facName,structCount);
710 //else if(td->type == SEQUENCE){
711 if(td
->type
== SEQUENCE
){
713 fprintf(fp
,"\t\t//copy sequence length and sequence to buffer\n");
715 if(td
->alignment
> 1) {
716 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
717 td
->alignment
, td
->alignment
, td
->alignment
);
719 fprintf(fp
,"\t\t*ptr = seqlength_%d;\n",++seqCount
);
720 fprintf(fp
,"\t\tptr += sizeof(%s);\n",uintOutputTypes
[td
->size
]);
721 if(td
->alignment
> 1) {
722 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
723 td
->alignment
, td
->alignment
, td
->alignment
);
725 fprintf(fp
,"\t\tmemcpy(ptr, %s, sizeof(%s) * seqlength_%d);\n",
726 fld
->name
, getTypeStr(td
), seqCount
);
727 fprintf(fp
,"\t\tptr += sizeof(%s) * seqlength_%d;\n\n",
728 getTypeStr(td
), seqCount
);
730 else if(td
->type
==STRING
){
732 fprintf(fp
,"\t\t//copy string to buffer\n");
733 fprintf(fp
,"\t\tif(strlength_%d > 0){\n",++strCount
);
734 if(td
->alignment
> 1) {
735 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
736 td
->alignment
, td
->alignment
, td
->alignment
);
738 fprintf(fp
,"\t\t\tmemcpy(ptr, %s, strlength_%d + 1);\n",
739 fld
->name
, strCount
);
740 fprintf(fp
,"\t\t\tptr += strlength_%d + 1;\n",strCount
);
741 fprintf(fp
,"\t\t}else{\n");
742 fprintf(fp
,"\t\t\t*ptr = '\\0';\n");
743 fprintf(fp
,"\t\t\tptr += 1;\n");
744 fprintf(fp
,"\t\t}\n\n");
745 }else if(td
->type
==ARRAY
){
747 fprintf(fp
,"\t//copy array to buffer\n");
748 if(td
->alignment
> 1) {
749 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
750 td
->alignment
, td
->alignment
, td
->alignment
);
752 fprintf(fp
,"\tmemcpy(ptr, %s, sizeof(%s) * %d);\n",
753 fld
->name
, getTypeStr(td
), td
->size
);
754 fprintf(fp
,"\tptr += sizeof(%s) * %d;\n\n", getTypeStr(td
), td
->size
);
757 if(structCount
+ seqCount
> 1) fprintf(fp
,"\n");
760 fprintf(fp
, "\t\t/* Commit the work */\n");
761 fprintf(fp
, "\t\trelay_commit(channel->rchan->buf[smp_processor_id()],\n"
762 "\t\t\t\tbuff, event_length);\n");
763 fprintf(fp
, "\t\tltt_write_commit_counter("
764 "channel->rchan->buf[smp_processor_id()],\n"
767 /* End of traces iteration */
768 fprintf(fp
, "\t}\n\n");
771 // The generated preempt_check_resched is not dangerous because
772 // interrupts are disabled.
773 fprintf(fp
, "\tspin_unlock(<t_traces.locks[smp_processor_id()]);\n");
775 fprintf(fp
, "unlock:\n");
776 fprintf(fp
, "\tbarrier();\n");
777 fprintf(fp
, "\tltt_nesting[smp_processor_id()]--;\n");
778 fprintf(fp
, "\t/* Re-enable interrupts */\n");
779 fprintf(fp
, "\tlocal_irq_restore(_flags);\n");
780 fprintf(fp
, "\tpreempt_enable_no_resched();\n");
781 //fprintf(fp, "\tpreempt_check_resched();\n");
783 //call trace function
784 //fprintf(fp,"\n\t//call trace function\n");
785 //fprintf(fp,"\tltt_log_event(ltt_facility_%s_%X, %s, bufLength, buff);\n",facName,checksum,ev->name);
787 fprintf(fp
, "#endif //CONFIG_LTT\n\n");
792 /*****************************************************************************
794 * getTypeStr : generate type string
796 * td : a type descriptor
798 * char * : type string
799 ****************************************************************************/
800 char * getTypeStr(type_descriptor
* td
){
801 type_descriptor
* t
;
805 return intOutputTypes
[td
->size
];
807 return uintOutputTypes
[td
->size
];
813 return "unsigned long";
821 return floatOutputTypes
[td
->size
];
825 return uintOutputTypes
[td
->size
];
831 return intOutputTypes
[t
->size
];
833 return uintOutputTypes
[t
->size
];
839 return "unsigned long";
847 return floatOutputTypes
[t
->size
];
851 return uintOutputTypes
[t
->size
];
853 error_callback(NULL
,"Nested struct is not supportted");
857 case STRUCT
: //for now we do not support nested struct
858 error_callback(NULL
,"Nested struct is not supportted");
861 error_callback(NULL
,"No type information");
867 /*****************************************************************************
869 * generateLoaderfile: generate a facility loaded .h file
871 * fp : file to be written to
872 * facName : name of facility
873 * nbEvent : number of events in the facility
874 * checksum : checksum for the facility
875 ****************************************************************************/
876 void generateLoaderfile(FILE * fp
, char * facName
, int nbEvent
, unsigned long checksum
, char *capname
){
877 fprintf(fp
, "#ifndef _LTT_FACILITY_LOADER_%s_H_\n",capname
);
878 fprintf(fp
, "#define _LTT_FACILITY_LOADER_%s_H_\n\n",capname
);
879 fprintf(fp
,"#include <linux/ltt-facilities.h>\n", facName
, checksum
);
880 fprintf(fp
,"ltt_facility_t\tltt_facility_%s;\n", facName
, checksum
);
881 fprintf(fp
,"ltt_facility_t\tltt_facility_%s_%X;\n\n", facName
, checksum
);
883 fprintf(fp
,"#define LTT_FACILITY_SYMBOL\t\t\t\t\t\t\tltt_facility_%s\n",
885 fprintf(fp
,"#define LTT_FACILITY_CHECKSUM_SYMBOL\t\tltt_facility_%s_%X\n",
887 fprintf(fp
,"#define LTT_FACILITY_CHECKSUM\t\t\t\t\t\t0x%X\n", checksum
);
888 fprintf(fp
,"#define LTT_FACILITY_NAME\t\t\t\t\t\t\t\t\"%s\"\n", facName
);
889 fprintf(fp
,"#define LTT_FACILITY_NUM_EVENTS\t\t\t\t\t%d\n\n", nbEvent
);
890 fprintf(fp
, "#endif //_LTT_FACILITY_LOADER_%s_H_\n",capname
);
893 void generateCfile(FILE * fp
, char * filefacname
){
896 fprintf(fp
, " * ltt-facility-loader-%s.c\n", filefacname
);
898 fprintf(fp
, " * (C) Copyright 2005 - \n");
899 fprintf(fp
, " * Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)\n");
901 fprintf(fp
, " * Contains the LTT facility loader.\n");
903 fprintf(fp
, " */\n");
906 fprintf(fp
, "#include <linux/ltt-facilities.h>\n");
907 fprintf(fp
, "#include <linux/module.h>\n");
908 fprintf(fp
, "#include <linux/init.h>\n");
909 fprintf(fp
, "#include <linux/config.h>\n");
910 fprintf(fp
, "#include \"ltt-facility-loader-%s.h\"\n", filefacname
);
913 fprintf(fp
, "#ifdef CONFIG_LTT\n");
915 fprintf(fp
, "EXPORT_SYMBOL(LTT_FACILITY_SYMBOL);\n");
916 fprintf(fp
, "EXPORT_SYMBOL(LTT_FACILITY_CHECKSUM_SYMBOL);\n");
918 fprintf(fp
, "static const char ltt_facility_name[] = LTT_FACILITY_NAME;\n");
920 fprintf(fp
, "#define SYMBOL_STRING(sym) #sym\n");
922 fprintf(fp
, "static struct ltt_facility facility = {\n");
923 fprintf(fp
, "\t.name = ltt_facility_name,\n");
924 fprintf(fp
, "\t.num_events = LTT_FACILITY_NUM_EVENTS,\n");
925 fprintf(fp
, "\t.checksum = LTT_FACILITY_CHECKSUM,\n");
926 fprintf(fp
, "\t.symbol = SYMBOL_STRING(LTT_FACILITY_SYMBOL)\n");
929 fprintf(fp
, "#ifndef MODULE\n");
931 fprintf(fp
, "/* Built-in facility. */\n");
933 fprintf(fp
, "static int __init facility_init(void)\n");
935 fprintf(fp
, "\tprintk(KERN_INFO \"LTT : ltt-facility-%s init in kernel\\n\");\n", filefacname
);
937 fprintf(fp
, "\tLTT_FACILITY_SYMBOL = ltt_facility_builtin_register(&facility);\n");
938 fprintf(fp
, "\tLTT_FACILITY_CHECKSUM_SYMBOL = LTT_FACILITY_SYMBOL;\n");
940 fprintf(fp
, "\treturn LTT_FACILITY_SYMBOL;\n");
942 fprintf(fp
, "__initcall(facility_init);\n");
946 fprintf(fp
, "#else \n");
948 fprintf(fp
, "/* Dynamic facility. */\n");
950 fprintf(fp
, "static int __init facility_init(void)\n");
952 fprintf(fp
, "\tprintk(KERN_INFO \"LTT : ltt-facility-%s init dynamic\\n\");\n", filefacname
);
954 fprintf(fp
, "\tLTT_FACILITY_SYMBOL = ltt_facility_dynamic_register(&facility);\n");
955 fprintf(fp
, "\tLTT_FACILITY_SYMBOL_CHECKSUM = LTT_FACILITY_SYMBOL;\n");
957 fprintf(fp
, "\treturn LTT_FACILITY_SYMBOL;\n");
960 fprintf(fp
, "static void __exit facility_exit(void)\n");
962 fprintf(fp
, "\tint err;\n");
964 fprintf(fp
, "\terr = ltt_facility_dynamic_unregister(LTT_FACILITY_SYMBOL);\n");
965 fprintf(fp
, "\tif(err != 0)\n");
966 fprintf(fp
, "\t\tprintk(KERN_ERR \"LTT : Error in unregistering facility.\\n\");\n");
970 fprintf(fp
, "module_init(facility_init)\n");
971 fprintf(fp
, "module_exit(facility_exit)\n");
974 fprintf(fp
, "MODULE_LICENSE(\"GPL\");\n");
975 fprintf(fp
, "MODULE_AUTHOR(\"Mathieu Desnoyers\");\n");
976 fprintf(fp
, "MODULE_DESCRIPTION(\"Linux Trace Toolkit Facility\");\n");
978 fprintf(fp
, "#endif //MODULE\n");
980 fprintf(fp
, "#endif //CONFIG_LTT\n");
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