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
, "\tunsigned int index;\n");
491 fprintf(fp
, "\tstruct ltt_channel_struct *channel;\n");
492 fprintf(fp
, "\tstruct ltt_trace_struct *trace;\n");
493 fprintf(fp
, "\tunsigned long _flags;\n");
494 fprintf(fp
, "\tvoid *buff;\n");
495 fprintf(fp
, "\tvoid *old_address;\n");
496 fprintf(fp
, "\tunsigned int header_length;\n");
497 fprintf(fp
, "\tunsigned int event_length;\n"); // total size (incl hdr)
498 fprintf(fp
, "\tunsigned int length;\n"); // Size of the event var data.
499 fprintf(fp
, "\tunsigned char _offset;\n");
500 fprintf(fp
, "\tstruct rchan_buf *buf;\n");
501 fprintf(fp
, "\tstruct timeval delta;\n");
502 fprintf(fp
, "\tu64 tsc;\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 // if(ev->type == 0) fprintf(fp, "0");
536 fprintf(fp
, "\t\tchannel = ltt_get_channel_from_index(trace, index);\n");
537 fprintf(fp
, "\t\tbuf = channel->rchan->buf[smp_processor_id()];\n");
539 /* Warning : not atomic reservation : event size depends on the current
540 * address for alignment */
541 /* NOTE : using cmpxchg in reserve with repeat for atomicity */
543 fprintf(fp
, "\t\tdo {\n");
544 fprintf(fp
, "\t\t\told_address = buf->data + buf->offset;\n");
545 fprintf(fp
, "\t\t\tchar *ptr = (char*)old_address;\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");
552 fprintf(fp
, "\t\t\tptr += _offset + header_length;\n");
554 for(pos1
=0;pos1
<structCount
;pos1
++){
556 if(ev
->type
->alignment
> 1) {
557 fprintf(fp
,"\t\t\tptr += (%u - ((unsigned int)ptr&(%u-1)))&(%u-1) ;\n",
558 ev
->type
->alignment
, ev
->type
->alignment
, ev
->type
->alignment
);
560 fprintf(fp
,"\t\t\tptr += sizeof(struct %s_%s_%d);\n",ev
->name
,
562 // if(pos1 != structCount-1) fprintf(fp," + ");
565 //length of buffer : length of all arrays, sequences and strings
570 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
571 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
573 if(td
->type
== SEQUENCE
|| td
->type
==STRING
|| td
->type
==ARRAY
){
574 if(td
->type
== SEQUENCE
) {
575 if(td
->alignment
> 1) {
576 fprintf(fp
,"\t\t\tptr += (%u - ((unsigned int)ptr&(%u-1)))&(%u-1)) ;\n",
577 td
->alignment
, td
->alignment
, td
->alignment
);
580 "\t\t\tptr += sizeof(%s) + (sizeof(%s) * seqlength_%d);\n",
581 uintOutputTypes
[td
->size
], getTypeStr(td
), ++seqCount
);
582 } else if(td
->type
==STRING
) {
583 if(td
->alignment
> 1) {
584 fprintf(fp
,"\t\t\tptr += (%u - ((unsigned int)ptr&(%u-1)))&(%u-1)) ;\n",
585 td
->alignment
, td
->alignment
, td
->alignment
);
587 fprintf(fp
,"ptr += strlength_%d + 1;\n",
590 else if(td
->type
==ARRAY
) {
591 if(td
->alignment
> 1) {
592 fprintf(fp
,"\t\t\tptr += (%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
593 td
->alignment
, td
->alignment
, td
->alignment
);
595 fprintf(fp
,"\t\t\tptr += sizeof(%s) * %d;\n",
596 getTypeStr(td
),td
->size
);
597 if(structCount
== 0) flag
= 1;
603 fprintf(fp
, "\t\t\tevent_length = (unsigned long)ptr -"
604 "(unsigned long)old_address;\n");
606 fprintf(fp
, "\t\t\tbuff = relay_reserve(channel->rchan, event_length, "
609 fprintf(fp
, "\t\t} while(PTR_ERR(buff) == -EAGAIN);\n");
613 /* Reserve the channel */
614 //fprintf(fp, "\t\tbuff = relay_reserve(channel->rchan, event_length);\n");
615 fprintf(fp
, "\t\tif(buff == NULL) {\n");
616 fprintf(fp
, "\t\t\t/* Buffer is full*/\n");
617 fprintf(fp
, "\t\t\t/* for debug BUG(); */\n"); // DEBUG!
618 fprintf(fp
, "\t\t\tchannel->events_lost[smp_processor_id()]++;\n");
619 fprintf(fp
, "\t\t\tbreak;\n"); /* don't commit a NULL reservation! */
620 fprintf(fp
, "\t\t}\n");
623 //fprintf(fp, "\t\tif(resret == 1) {\n");
624 //fprintf(fp, "printk(\"f%%lu e\%%u \", ltt_facility_%s_%X, event_%s);",
625 // facName, checksum, ev->name);
626 //fprintf(fp, "\t\t}\n");
628 /* Write the header */
630 fprintf(fp
,"\t\tlength = event_length - header_length;\n");
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 "\t\t\t\t&delta, &tsc);\n",
635 facName
, checksum
, ev
->name
);
639 fprintf(fp
, "\t\tchar *ptr = (char*)buff + _offset + header_length;\n");
642 //declare a char pointer if needed : starts at the end of the structs.
643 //if(structCount + hasStrSeq > 1) {
644 // fprintf(fp,"\t\tchar * ptr = (char*)buff + header_length");
645 // for(pos1=0;pos1<structCount;pos1++){
646 // fprintf(fp," + sizeof(struct %s_%s_%d)",ev->name, facName,pos1+1);
648 // if(structCount + hasStrSeq > 1) fprintf(fp,";\n");
651 // Declare an alias pointer of the struct type to the beginning
652 // of the reserved area, just after the event header.
654 if(ev
->type
->alignment
> 1) {
655 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
656 ev
->type
->alignment
, ev
->type
->alignment
, ev
->type
->alignment
);
659 fprintf(fp
, "\t\t__1 = (struct %s_%s_1 *)(ptr);\n",
662 //allocate memory for new struct and initialize it
663 //if(whichTypeFirst == 1){ //struct first
664 //for(pos1=0;pos1<structCount;pos1++){
665 // if(pos1==0) fprintf(fp,
666 // "\tstruct %s_%s_1 * __1 = (struct %s_%s_1 *)buff;\n",
667 // ev->name, facName,ev->name, facName);
668 //MD disabled else fprintf(fp,
669 // "\tstruct %s_%s_%d __%d;\n",
670 // ev->name, facName,pos1+1,pos1+1);
672 //}else if(whichTypeFirst == 2){
673 // for(pos1=0;pos1<structCount;pos1++)
674 // fprintf(fp,"\tstruct %s_%s_%d __%d;\n",
675 // ev->name, facName,pos1+1,pos1+1);
679 if(structCount
) fprintf(fp
,"\t\t//initialize structs\n");
683 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
684 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
686 if(td
->type
!= ARRAY
&& td
->type
!= SEQUENCE
&& td
->type
!= STRING
){
690 // if(structCount > 1) fprintf(fp,"\n");
692 fprintf(fp
, "\t\t__1->%s = %s;\n", fld
->name
, fld
->name
);
694 //if(structCount == 1 && whichTypeFirst == 1)
695 // fprintf(fp, "\t__1->%s = %s;\n",fld->name,fld->name );
697 // fprintf(fp, "\t__%d.%s = %s;\n",structCount ,fld->name,fld->name);
701 if(structCount
) fprintf(fp
,"\n");
702 //set ptr to the end of first struct if needed;
703 //if(structCount + hasStrSeq > 1){
704 // fprintf(fp,"\n\t\t//set ptr to the end of the first struct\n");
705 // fprintf(fp,"\t\tptr += sizeof(struct %s_%s_1);\n\n",ev->name, facName);
708 //copy struct, sequence and string to buffer
714 for(pos1
= 0; pos1
< ev
->type
->fields
.position
; pos1
++){
715 fld
= (field
*)ev
->type
->fields
.array
[pos1
];
717 // if(td->type != STRING && td->type != SEQUENCE && td->type != ARRAY){
718 // if(flag == 0) structCount++;
720 // if((structCount > 1 || whichTypeFirst == 2) && flag == 1){
721 // assert(0); // MD : disabled !
722 // fprintf(fp,"\t//copy struct to buffer\n");
723 // fprintf(fp,"\tmemcpy(ptr, &__%d, sizeof(struct %s_%s_%d));\n",
724 // structCount, ev->name, facName,structCount);
725 // fprintf(fp,"\tptr += sizeof(struct %s_%s_%d);\n\n",
726 // ev->name, facName,structCount);
729 //else if(td->type == SEQUENCE){
730 if(td
->type
== SEQUENCE
){
732 fprintf(fp
,"\t\t//copy sequence length and sequence to buffer\n");
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*ptr = seqlength_%d;\n",++seqCount
);
739 fprintf(fp
,"\t\tptr += sizeof(%s);\n",uintOutputTypes
[td
->size
]);
740 if(td
->alignment
> 1) {
741 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
742 td
->alignment
, td
->alignment
, td
->alignment
);
744 fprintf(fp
,"\t\tmemcpy(ptr, %s, sizeof(%s) * seqlength_%d);\n",
745 fld
->name
, getTypeStr(td
), seqCount
);
746 fprintf(fp
,"\t\tptr += sizeof(%s) * seqlength_%d;\n\n",
747 getTypeStr(td
), seqCount
);
749 else if(td
->type
==STRING
){
751 fprintf(fp
,"\t\t//copy string to buffer\n");
752 fprintf(fp
,"\t\tif(strlength_%d > 0){\n",++strCount
);
753 if(td
->alignment
> 1) {
754 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
755 td
->alignment
, td
->alignment
, td
->alignment
);
757 fprintf(fp
,"\t\t\tmemcpy(ptr, %s, strlength_%d + 1);\n",
758 fld
->name
, strCount
);
759 fprintf(fp
,"\t\t\tptr += strlength_%d + 1;\n",strCount
);
760 fprintf(fp
,"\t\t}else{\n");
761 fprintf(fp
,"\t\t\t*ptr = '\\0';\n");
762 fprintf(fp
,"\t\t\tptr += 1;\n");
763 fprintf(fp
,"\t\t}\n\n");
764 }else if(td
->type
==ARRAY
){
766 fprintf(fp
,"\t//copy array to buffer\n");
767 if(td
->alignment
> 1) {
768 fprintf(fp
,"\t\tptr+=(%u - ((unsigned int)ptr&(%u-1)))&(%u-1);\n",
769 td
->alignment
, td
->alignment
, td
->alignment
);
771 fprintf(fp
,"\tmemcpy(ptr, %s, sizeof(%s) * %d);\n",
772 fld
->name
, getTypeStr(td
), td
->size
);
773 fprintf(fp
,"\tptr += sizeof(%s) * %d;\n\n", getTypeStr(td
), td
->size
);
776 if(structCount
+ seqCount
> 1) fprintf(fp
,"\n");
779 fprintf(fp
, "\t\t/* Commit the work */\n");
780 fprintf(fp
, "\t\trelay_commit(channel->rchan->buf[smp_processor_id()],\n"
781 "\t\t\t\tbuff, event_length);\n");
782 fprintf(fp
, "\t\tltt_write_commit_counter("
783 "channel->rchan->buf[smp_processor_id()],\n"
786 /* End of traces iteration */
787 fprintf(fp
, "\t}\n\n");
790 // The generated preempt_check_resched is not dangerous because
791 // interrupts are disabled.
792 fprintf(fp
, "\tspin_unlock(<t_traces.locks[smp_processor_id()]);\n");
794 fprintf(fp
, "unlock:\n");
795 fprintf(fp
, "\tbarrier();\n");
796 fprintf(fp
, "\tltt_nesting[smp_processor_id()]--;\n");
797 fprintf(fp
, "\t/* Re-enable interrupts */\n");
798 fprintf(fp
, "\tlocal_irq_restore(_flags);\n");
799 fprintf(fp
, "\tpreempt_enable_no_resched();\n");
800 //fprintf(fp, "\tpreempt_check_resched();\n");
802 //call trace function
803 //fprintf(fp,"\n\t//call trace function\n");
804 //fprintf(fp,"\tltt_log_event(ltt_facility_%s_%X, %s, bufLength, buff);\n",facName,checksum,ev->name);
806 fprintf(fp
, "#endif //CONFIG_LTT\n\n");
811 /*****************************************************************************
813 * getTypeStr : generate type string
815 * td : a type descriptor
817 * char * : type string
818 ****************************************************************************/
819 char * getTypeStr(type_descriptor
* td
){
820 type_descriptor
* t
;
824 return intOutputTypes
[td
->size
];
826 return uintOutputTypes
[td
->size
];
832 return "unsigned long";
840 return floatOutputTypes
[td
->size
];
844 return uintOutputTypes
[td
->size
];
850 return intOutputTypes
[t
->size
];
852 return uintOutputTypes
[t
->size
];
858 return "unsigned long";
866 return floatOutputTypes
[t
->size
];
870 return uintOutputTypes
[t
->size
];
872 error_callback(NULL
,"Nested struct is not supportted");
876 case STRUCT
: //for now we do not support nested struct
877 error_callback(NULL
,"Nested struct is not supportted");
880 error_callback(NULL
,"No type information");
886 /*****************************************************************************
888 * generateLoaderfile: generate a facility loaded .h file
890 * fp : file to be written to
891 * facName : name of facility
892 * nbEvent : number of events in the facility
893 * checksum : checksum for the facility
894 ****************************************************************************/
895 void generateLoaderfile(FILE * fp
, char * facName
, int nbEvent
, unsigned long checksum
, char *capname
){
896 fprintf(fp
, "#ifndef _LTT_FACILITY_LOADER_%s_H_\n",capname
);
897 fprintf(fp
, "#define _LTT_FACILITY_LOADER_%s_H_\n\n",capname
);
898 fprintf(fp
,"#include <linux/ltt-facilities.h>\n", facName
, checksum
);
899 fprintf(fp
,"ltt_facility_t\tltt_facility_%s;\n", facName
, checksum
);
900 fprintf(fp
,"ltt_facility_t\tltt_facility_%s_%X;\n\n", facName
, checksum
);
902 fprintf(fp
,"#define LTT_FACILITY_SYMBOL\t\t\t\t\t\t\tltt_facility_%s\n",
904 fprintf(fp
,"#define LTT_FACILITY_CHECKSUM_SYMBOL\t\tltt_facility_%s_%X\n",
906 fprintf(fp
,"#define LTT_FACILITY_CHECKSUM\t\t\t\t\t\t0x%X\n", checksum
);
907 fprintf(fp
,"#define LTT_FACILITY_NAME\t\t\t\t\t\t\t\t\"%s\"\n", facName
);
908 fprintf(fp
,"#define LTT_FACILITY_NUM_EVENTS\t\t\t\t\t%d\n\n", nbEvent
);
909 fprintf(fp
, "#endif //_LTT_FACILITY_LOADER_%s_H_\n",capname
);
912 void generateCfile(FILE * fp
, char * filefacname
){
915 fprintf(fp
, " * ltt-facility-loader-%s.c\n", filefacname
);
917 fprintf(fp
, " * (C) Copyright 2005 - \n");
918 fprintf(fp
, " * Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)\n");
920 fprintf(fp
, " * Contains the LTT facility loader.\n");
922 fprintf(fp
, " */\n");
925 fprintf(fp
, "#include <linux/ltt-facilities.h>\n");
926 fprintf(fp
, "#include <linux/module.h>\n");
927 fprintf(fp
, "#include <linux/init.h>\n");
928 fprintf(fp
, "#include <linux/config.h>\n");
929 fprintf(fp
, "#include \"ltt-facility-loader-%s.h\"\n", filefacname
);
932 fprintf(fp
, "#ifdef CONFIG_LTT\n");
934 fprintf(fp
, "EXPORT_SYMBOL(LTT_FACILITY_SYMBOL);\n");
935 fprintf(fp
, "EXPORT_SYMBOL(LTT_FACILITY_CHECKSUM_SYMBOL);\n");
937 fprintf(fp
, "static const char ltt_facility_name[] = LTT_FACILITY_NAME;\n");
939 fprintf(fp
, "#define SYMBOL_STRING(sym) #sym\n");
941 fprintf(fp
, "static struct ltt_facility facility = {\n");
942 fprintf(fp
, "\t.name = ltt_facility_name,\n");
943 fprintf(fp
, "\t.num_events = LTT_FACILITY_NUM_EVENTS,\n");
944 fprintf(fp
, "\t.checksum = LTT_FACILITY_CHECKSUM,\n");
945 fprintf(fp
, "\t.symbol = SYMBOL_STRING(LTT_FACILITY_SYMBOL)\n");
948 fprintf(fp
, "#ifndef MODULE\n");
950 fprintf(fp
, "/* Built-in facility. */\n");
952 fprintf(fp
, "static int __init facility_init(void)\n");
954 fprintf(fp
, "\tprintk(KERN_INFO \"LTT : ltt-facility-%s init in kernel\\n\");\n", filefacname
);
956 fprintf(fp
, "\tLTT_FACILITY_SYMBOL = ltt_facility_builtin_register(&facility);\n");
957 fprintf(fp
, "\tLTT_FACILITY_CHECKSUM_SYMBOL = LTT_FACILITY_SYMBOL;\n");
959 fprintf(fp
, "\treturn LTT_FACILITY_SYMBOL;\n");
961 fprintf(fp
, "__initcall(facility_init);\n");
965 fprintf(fp
, "#else \n");
967 fprintf(fp
, "/* Dynamic facility. */\n");
969 fprintf(fp
, "static int __init facility_init(void)\n");
971 fprintf(fp
, "\tprintk(KERN_INFO \"LTT : ltt-facility-%s init dynamic\\n\");\n", filefacname
);
973 fprintf(fp
, "\tLTT_FACILITY_SYMBOL = ltt_facility_dynamic_register(&facility);\n");
974 fprintf(fp
, "\tLTT_FACILITY_SYMBOL_CHECKSUM = LTT_FACILITY_SYMBOL;\n");
976 fprintf(fp
, "\treturn LTT_FACILITY_SYMBOL;\n");
979 fprintf(fp
, "static void __exit facility_exit(void)\n");
981 fprintf(fp
, "\tint err;\n");
983 fprintf(fp
, "\terr = ltt_facility_dynamic_unregister(LTT_FACILITY_SYMBOL);\n");
984 fprintf(fp
, "\tif(err != 0)\n");
985 fprintf(fp
, "\t\tprintk(KERN_ERR \"LTT : Error in unregistering facility.\\n\");\n");
989 fprintf(fp
, "module_init(facility_init)\n");
990 fprintf(fp
, "module_exit(facility_exit)\n");
993 fprintf(fp
, "MODULE_LICENSE(\"GPL\");\n");
994 fprintf(fp
, "MODULE_AUTHOR(\"Mathieu Desnoyers\");\n");
995 fprintf(fp
, "MODULE_DESCRIPTION(\"Linux Trace Toolkit Facility\");\n");
997 fprintf(fp
, "#endif //MODULE\n");
999 fprintf(fp
, "#endif //CONFIG_LTT\n");
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