2363660eebe595586048fbfabcd8975bdda41d18
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 *old_address;\n");
497 fprintf(fp
, "\tunsigned int header_length;\n");
498 fprintf(fp
, "\tunsigned int event_length;\n");
499 fprintf(fp
, "\tunsigned char _offset;\n");
500 fprintf(fp
, "\tunsigned char length_offset;\n");
501 fprintf(fp
, "\tstruct rchan_buf *buf;\n");
502 fprintf(fp
, "\tstruct timeval delta;\n");
503 fprintf(fp
, "\tu64 tsc;\n");
506 fprintf(fp
, "\tstruct %s_%s_1* __1;\n\n", ev
->name
, facName
);
508 /* Warning : this is done prior to taking locks :
509 * setting this value must be done at the end of the trace activation.
510 * (we don't care for trace removal, as the list of traces is protected : it
511 * just won't iterate on any trace). */
513 "\tif(ltt_traces.num_active_traces == 0) return;\n\n");
515 fprintf(fp
, "\t/* Disable interrupts. */\n");
516 fprintf(fp
, "\tlocal_irq_save(_flags);\n");
517 fprintf(fp
, "\tpreempt_disable();\n\n");
519 fprintf(fp
, "\tltt_nesting[smp_processor_id()]++;\n");
520 fprintf(fp
, "\tbarrier();\n");
521 fprintf(fp
, "\tif(ltt_nesting[smp_processor_id()] > 1) goto unlock;\n");
522 fprintf(fp
, "\tspin_lock(<t_traces.locks[smp_processor_id()]);\n\n");
525 "\tindex = ltt_get_index_from_facility(ltt_facility_%s_%X,\n"\
526 "\t\t\t\tevent_%s);\n",
527 facName
, checksum
, ev
->name
);
531 fprintf(fp
, "\tlist_for_each_entry(trace, <t_traces.head, list) {\n");
532 fprintf(fp
, "\t\tif(!trace->active) continue;\n\n");
534 //length of buffer : length of all structures
535 fprintf(fp
,"\t\tlength = 0;\n");
536 fprintf(fp
,"\t\tlength_offset = 0;\n");
537 // if(ev->type == 0) fprintf(fp, "0");
539 fprintf(fp
, "\t\tchannel = ltt_get_channel_from_index(trace, index);\n");
540 fprintf(fp
, "\t\tbuf = channel->rchan->buf[smp_processor_id()];\n");
542 /* Warning : not atomic reservation : event size depends on the current
543 * address for alignment */
544 /* NOTE : using cmpxchg in reserve with repeat for atomicity */
546 fprintf(fp
, "\t\tdo {\n");
547 fprintf(fp
, "\t\t\told_address = buf->data + buf->offset;\n");
548 fprintf(fp
, "\t\t\theader_length = ltt_get_event_header_data(trace, "
550 "\t\t\t\t\t\t\t\t\t\told_address, &_offset, &delta, &tsc);\n");
553 fprintf(fp
, "\t\t\tchar *ptr = (char*)old_address + "
554 "_offset + header_length;\n");
556 for(pos1
=0;pos1
<structCount
;pos1
++){
558 if(ev
->type
->alignment
> 1) {
559 fprintf(fp
,"\t\t\tlength_offset+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1) ;\n",
560 ev
->type
->alignment
, ev
->type
->alignment
, ev
->type
->alignment
);
562 fprintf(fp
,"\t\t\tlength+=sizeof(struct %s_%s_%d);\n",ev
->name
,
564 // if(pos1 != structCount-1) fprintf(fp," + ");
567 //length of buffer : length of all arrays, sequences and strings
572 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
573 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
575 if(td
->type
== SEQUENCE
|| td
->type
==STRING
|| td
->type
==ARRAY
){
576 if(td
->type
== SEQUENCE
) {
577 if(td
->alignment
> 1) {
578 fprintf(fp
,"\t\t\tlength_offset+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1)) ;\n",
579 td
->alignment
, td
->alignment
, td
->alignment
);
582 "\t\t\tlength+=sizeof(%s) + (sizeof(%s) * seqlength_%d);\n",
583 uintOutputTypes
[td
->size
], getTypeStr(td
), ++seqCount
);
584 } else if(td
->type
==STRING
) {
585 if(td
->alignment
> 1) {
586 fprintf(fp
,"\t\t\tlength_offset+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1)) ;\n",
587 td
->alignment
, td
->alignment
, td
->alignment
);
589 fprintf(fp
,"length+=strlength_%d + 1;\n",
592 else if(td
->type
==ARRAY
) {
593 if(td
->alignment
> 1) {
594 fprintf(fp
,"\t\t\tlength_offset+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
595 td
->alignment
, td
->alignment
, td
->alignment
);
597 fprintf(fp
,"\t\t\tlength+=sizeof(%s) * %d;\n",
598 getTypeStr(td
),td
->size
);
599 if(structCount
== 0) flag
= 1;
605 fprintf(fp
, "\t\t\tevent_length = _offset + header_length + "
606 "length_offset + length;\n");
608 fprintf(fp
, "\t\t\tbuff = relay_reserve(channel->rchan, event_length, "
611 fprintf(fp
, "\t\t} while(PTR_ERR(buff) == -EAGAIN);\n");
615 /* Reserve the channel */
616 //fprintf(fp, "\t\tbuff = relay_reserve(channel->rchan, event_length);\n");
617 fprintf(fp
, "\t\tif(buff == NULL) {\n");
618 fprintf(fp
, "\t\t\t/* Buffer is full*/\n");
619 fprintf(fp
, "\t\t\t/* for debug BUG(); */\n"); // DEBUG!
620 fprintf(fp
, "\t\t\tchannel->events_lost[smp_processor_id()]++;\n");
621 fprintf(fp
, "\t\t\tbreak;\n"); /* don't commit a NULL reservation! */
622 fprintf(fp
, "\t\t}\n");
625 //fprintf(fp, "\t\tif(resret == 1) {\n");
626 //fprintf(fp, "printk(\"f%%lu e\%%u \", ltt_facility_%s_%X, event_%s);",
627 // facName, checksum, ev->name);
628 //fprintf(fp, "\t\t}\n");
630 /* Write the header */
632 fprintf(fp
, "\t\tltt_write_event_header(trace, channel, buff, \n"
633 "\t\t\t\tltt_facility_%s_%X, event_%s, length, _offset);\n",
634 facName
, checksum
, ev
->name
);
638 fprintf(fp
, "\t\tchar *ptr = (char*)buff + _offset + header_length;\n");
641 //declare a char pointer if needed : starts at the end of the structs.
642 //if(structCount + hasStrSeq > 1) {
643 // fprintf(fp,"\t\tchar * ptr = (char*)buff + header_length");
644 // for(pos1=0;pos1<structCount;pos1++){
645 // fprintf(fp," + sizeof(struct %s_%s_%d)",ev->name, facName,pos1+1);
647 // if(structCount + hasStrSeq > 1) fprintf(fp,";\n");
650 // Declare an alias pointer of the struct type to the beginning
651 // of the reserved area, just after the event header.
653 if(ev
->type
->alignment
> 1) {
654 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
655 ev
->type
->alignment
, ev
->type
->alignment
, ev
->type
->alignment
);
658 fprintf(fp
, "\t\t__1 = (struct %s_%s_1 *)(ptr);\n",
661 //allocate memory for new struct and initialize it
662 //if(whichTypeFirst == 1){ //struct first
663 //for(pos1=0;pos1<structCount;pos1++){
664 // if(pos1==0) fprintf(fp,
665 // "\tstruct %s_%s_1 * __1 = (struct %s_%s_1 *)buff;\n",
666 // ev->name, facName,ev->name, facName);
667 //MD disabled else fprintf(fp,
668 // "\tstruct %s_%s_%d __%d;\n",
669 // ev->name, facName,pos1+1,pos1+1);
671 //}else if(whichTypeFirst == 2){
672 // for(pos1=0;pos1<structCount;pos1++)
673 // fprintf(fp,"\tstruct %s_%s_%d __%d;\n",
674 // ev->name, facName,pos1+1,pos1+1);
678 if(structCount
) fprintf(fp
,"\t\t//initialize structs\n");
682 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
683 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
685 if(td
->type
!= ARRAY
&& td
->type
!= SEQUENCE
&& td
->type
!= STRING
){
689 // if(structCount > 1) fprintf(fp,"\n");
691 fprintf(fp
, "\t\t__1->%s = %s;\n", fld
->name
, fld
->name
);
693 //if(structCount == 1 && whichTypeFirst == 1)
694 // fprintf(fp, "\t__1->%s = %s;\n",fld->name,fld->name );
696 // fprintf(fp, "\t__%d.%s = %s;\n",structCount ,fld->name,fld->name);
700 if(structCount
) fprintf(fp
,"\n");
701 //set ptr to the end of first struct if needed;
702 //if(structCount + hasStrSeq > 1){
703 // fprintf(fp,"\n\t\t//set ptr to the end of the first struct\n");
704 // fprintf(fp,"\t\tptr += sizeof(struct %s_%s_1);\n\n",ev->name, facName);
707 //copy struct, sequence and string to buffer
713 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
714 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
716 // if(td->type != STRING && td->type != SEQUENCE && td->type != ARRAY){
717 // if(flag == 0) structCount++;
719 // if((structCount > 1 || whichTypeFirst == 2) && flag == 1){
720 // assert(0); // MD : disabled !
721 // fprintf(fp,"\t//copy struct to buffer\n");
722 // fprintf(fp,"\tmemcpy(ptr, &__%d, sizeof(struct %s_%s_%d));\n",
723 // structCount, ev->name, facName,structCount);
724 // fprintf(fp,"\tptr += sizeof(struct %s_%s_%d);\n\n",
725 // ev->name, facName,structCount);
728 //else if(td->type == SEQUENCE){
729 if(td
->type
== SEQUENCE
){
731 fprintf(fp
,"\t\t//copy sequence length and sequence to buffer\n");
733 if(td
->alignment
> 1) {
734 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
735 td
->alignment
, td
->alignment
, td
->alignment
);
737 fprintf(fp
,"\t\t*ptr = seqlength_%d;\n",++seqCount
);
738 fprintf(fp
,"\t\tptr += sizeof(%s);\n",uintOutputTypes
[td
->size
]);
739 if(td
->alignment
> 1) {
740 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
741 td
->alignment
, td
->alignment
, td
->alignment
);
743 fprintf(fp
,"\t\tmemcpy(ptr, %s, sizeof(%s) * seqlength_%d);\n",
744 fld
->name
, getTypeStr(td
), seqCount
);
745 fprintf(fp
,"\t\tptr += sizeof(%s) * seqlength_%d;\n\n",
746 getTypeStr(td
), seqCount
);
748 else if(td
->type
==STRING
){
750 fprintf(fp
,"\t\t//copy string to buffer\n");
751 fprintf(fp
,"\t\tif(strlength_%d > 0){\n",++strCount
);
752 if(td
->alignment
> 1) {
753 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
754 td
->alignment
, td
->alignment
, td
->alignment
);
756 fprintf(fp
,"\t\t\tmemcpy(ptr, %s, strlength_%d + 1);\n",
757 fld
->name
, strCount
);
758 fprintf(fp
,"\t\t\tptr += strlength_%d + 1;\n",strCount
);
759 fprintf(fp
,"\t\t}else{\n");
760 fprintf(fp
,"\t\t\t*ptr = '\\0';\n");
761 fprintf(fp
,"\t\t\tptr += 1;\n");
762 fprintf(fp
,"\t\t}\n\n");
763 }else if(td
->type
==ARRAY
){
765 fprintf(fp
,"\t//copy array to buffer\n");
766 if(td
->alignment
> 1) {
767 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
768 td
->alignment
, td
->alignment
, td
->alignment
);
770 fprintf(fp
,"\tmemcpy(ptr, %s, sizeof(%s) * %d);\n",
771 fld
->name
, getTypeStr(td
), td
->size
);
772 fprintf(fp
,"\tptr += sizeof(%s) * %d;\n\n", getTypeStr(td
), td
->size
);
775 if(structCount
+ seqCount
> 1) fprintf(fp
,"\n");
778 fprintf(fp
, "\t\t/* Commit the work */\n");
779 fprintf(fp
, "\t\trelay_commit(channel->rchan->buf[smp_processor_id()],\n"
780 "\t\t\t\tbuff, event_length);\n");
781 fprintf(fp
, "\t\tltt_write_commit_counter("
782 "channel->rchan->buf[smp_processor_id()],\n"
785 /* End of traces iteration */
786 fprintf(fp
, "\t}\n\n");
789 // The generated preempt_check_resched is not dangerous because
790 // interrupts are disabled.
791 fprintf(fp
, "\tspin_unlock(<t_traces.locks[smp_processor_id()]);\n");
793 fprintf(fp
, "unlock:\n");
794 fprintf(fp
, "\tbarrier();\n");
795 fprintf(fp
, "\tltt_nesting[smp_processor_id()]--;\n");
796 fprintf(fp
, "\t/* Re-enable interrupts */\n");
797 fprintf(fp
, "\tlocal_irq_restore(_flags);\n");
798 fprintf(fp
, "\tpreempt_enable_no_resched();\n");
799 //fprintf(fp, "\tpreempt_check_resched();\n");
801 //call trace function
802 //fprintf(fp,"\n\t//call trace function\n");
803 //fprintf(fp,"\tltt_log_event(ltt_facility_%s_%X, %s, bufLength, buff);\n",facName,checksum,ev->name);
805 fprintf(fp
, "#endif //CONFIG_LTT\n\n");
810 /*****************************************************************************
812 * getTypeStr : generate type string
814 * td : a type descriptor
816 * char * : type string
817 ****************************************************************************/
818 char * getTypeStr(type_descriptor
* td
){
819 type_descriptor
* t
;
823 return intOutputTypes
[td
->size
];
825 return uintOutputTypes
[td
->size
];
831 return "unsigned long";
839 return floatOutputTypes
[td
->size
];
843 return uintOutputTypes
[td
->size
];
849 return intOutputTypes
[t
->size
];
851 return uintOutputTypes
[t
->size
];
857 return "unsigned long";
865 return floatOutputTypes
[t
->size
];
869 return uintOutputTypes
[t
->size
];
871 error_callback(NULL
,"Nested struct is not supportted");
875 case STRUCT
: //for now we do not support nested struct
876 error_callback(NULL
,"Nested struct is not supportted");
879 error_callback(NULL
,"No type information");
885 /*****************************************************************************
887 * generateLoaderfile: generate a facility loaded .h file
889 * fp : file to be written to
890 * facName : name of facility
891 * nbEvent : number of events in the facility
892 * checksum : checksum for the facility
893 ****************************************************************************/
894 void generateLoaderfile(FILE * fp
, char * facName
, int nbEvent
, unsigned long checksum
, char *capname
){
895 fprintf(fp
, "#ifndef _LTT_FACILITY_LOADER_%s_H_\n",capname
);
896 fprintf(fp
, "#define _LTT_FACILITY_LOADER_%s_H_\n\n",capname
);
897 fprintf(fp
,"#include <linux/ltt-facilities.h>\n", facName
, checksum
);
898 fprintf(fp
,"ltt_facility_t\tltt_facility_%s;\n", facName
, checksum
);
899 fprintf(fp
,"ltt_facility_t\tltt_facility_%s_%X;\n\n", facName
, checksum
);
901 fprintf(fp
,"#define LTT_FACILITY_SYMBOL\t\t\t\t\t\t\tltt_facility_%s\n",
903 fprintf(fp
,"#define LTT_FACILITY_CHECKSUM_SYMBOL\t\tltt_facility_%s_%X\n",
905 fprintf(fp
,"#define LTT_FACILITY_CHECKSUM\t\t\t\t\t\t0x%X\n", checksum
);
906 fprintf(fp
,"#define LTT_FACILITY_NAME\t\t\t\t\t\t\t\t\"%s\"\n", facName
);
907 fprintf(fp
,"#define LTT_FACILITY_NUM_EVENTS\t\t\t\t\t%d\n\n", nbEvent
);
908 fprintf(fp
, "#endif //_LTT_FACILITY_LOADER_%s_H_\n",capname
);
911 void generateCfile(FILE * fp
, char * filefacname
){
914 fprintf(fp
, " * ltt-facility-loader-%s.c\n", filefacname
);
916 fprintf(fp
, " * (C) Copyright 2005 - \n");
917 fprintf(fp
, " * Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)\n");
919 fprintf(fp
, " * Contains the LTT facility loader.\n");
921 fprintf(fp
, " */\n");
924 fprintf(fp
, "#include <linux/ltt-facilities.h>\n");
925 fprintf(fp
, "#include <linux/module.h>\n");
926 fprintf(fp
, "#include <linux/init.h>\n");
927 fprintf(fp
, "#include <linux/config.h>\n");
928 fprintf(fp
, "#include \"ltt-facility-loader-%s.h\"\n", filefacname
);
931 fprintf(fp
, "#ifdef CONFIG_LTT\n");
933 fprintf(fp
, "EXPORT_SYMBOL(LTT_FACILITY_SYMBOL);\n");
934 fprintf(fp
, "EXPORT_SYMBOL(LTT_FACILITY_CHECKSUM_SYMBOL);\n");
936 fprintf(fp
, "static const char ltt_facility_name[] = LTT_FACILITY_NAME;\n");
938 fprintf(fp
, "#define SYMBOL_STRING(sym) #sym\n");
940 fprintf(fp
, "static struct ltt_facility facility = {\n");
941 fprintf(fp
, "\t.name = ltt_facility_name,\n");
942 fprintf(fp
, "\t.num_events = LTT_FACILITY_NUM_EVENTS,\n");
943 fprintf(fp
, "\t.checksum = LTT_FACILITY_CHECKSUM,\n");
944 fprintf(fp
, "\t.symbol = SYMBOL_STRING(LTT_FACILITY_SYMBOL)\n");
947 fprintf(fp
, "#ifndef MODULE\n");
949 fprintf(fp
, "/* Built-in facility. */\n");
951 fprintf(fp
, "static int __init facility_init(void)\n");
953 fprintf(fp
, "\tprintk(KERN_INFO \"LTT : ltt-facility-%s init in kernel\\n\");\n", filefacname
);
955 fprintf(fp
, "\tLTT_FACILITY_SYMBOL = ltt_facility_builtin_register(&facility);\n");
956 fprintf(fp
, "\tLTT_FACILITY_CHECKSUM_SYMBOL = LTT_FACILITY_SYMBOL;\n");
958 fprintf(fp
, "\treturn LTT_FACILITY_SYMBOL;\n");
960 fprintf(fp
, "__initcall(facility_init);\n");
964 fprintf(fp
, "#else \n");
966 fprintf(fp
, "/* Dynamic facility. */\n");
968 fprintf(fp
, "static int __init facility_init(void)\n");
970 fprintf(fp
, "\tprintk(KERN_INFO \"LTT : ltt-facility-%s init dynamic\\n\");\n", filefacname
);
972 fprintf(fp
, "\tLTT_FACILITY_SYMBOL = ltt_facility_dynamic_register(&facility);\n");
973 fprintf(fp
, "\tLTT_FACILITY_SYMBOL_CHECKSUM = LTT_FACILITY_SYMBOL;\n");
975 fprintf(fp
, "\treturn LTT_FACILITY_SYMBOL;\n");
978 fprintf(fp
, "static void __exit facility_exit(void)\n");
980 fprintf(fp
, "\tint err;\n");
982 fprintf(fp
, "\terr = ltt_facility_dynamic_unregister(LTT_FACILITY_SYMBOL);\n");
983 fprintf(fp
, "\tif(err != 0)\n");
984 fprintf(fp
, "\t\tprintk(KERN_ERR \"LTT : Error in unregistering facility.\\n\");\n");
988 fprintf(fp
, "module_init(facility_init)\n");
989 fprintf(fp
, "module_exit(facility_exit)\n");
992 fprintf(fp
, "MODULE_LICENSE(\"GPL\");\n");
993 fprintf(fp
, "MODULE_AUTHOR(\"Mathieu Desnoyers\");\n");
994 fprintf(fp
, "MODULE_DESCRIPTION(\"Linux Trace Toolkit Facility\");\n");
996 fprintf(fp
, "#endif //MODULE\n");
998 fprintf(fp
, "#endif //CONFIG_LTT\n");
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