xref: /freebsd/usr.bin/gprof/printgprof.c (revision cbd30a72ca196976c1c700400ecd424baa1b9c16)
1 /*
2  * Copyright (c) 1983, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29 
30 #if 0
31 #ifndef lint
32 static char sccsid[] = "@(#)printgprof.c	8.1 (Berkeley) 6/6/93";
33 #endif /* not lint */
34 #endif
35 
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
38 
39 #include <err.h>
40 #include <string.h>
41 
42 #include "gprof.h"
43 #include "pathnames.h"
44 
45 int namecmp(const void *, const void *);
46 int timecmp(const void *, const void *);
47 
48 void
49 printprof(void)
50 {
51     register nltype	*np;
52     nltype		**sortednlp;
53     int			idx;
54 
55     actime = 0.0;
56     printf( "\f\n" );
57     flatprofheader();
58 	/*
59 	 *	Sort the symbol table in by time
60 	 */
61     sortednlp = (nltype **) calloc( nname , sizeof(nltype *) );
62     if ( sortednlp == (nltype **) 0 )
63 	errx( 1 , "[printprof] ran out of memory for time sorting" );
64     for ( idx = 0 ; idx < nname ; idx += 1 ) {
65 	sortednlp[ idx ] = &nl[ idx ];
66     }
67     qsort( sortednlp , nname , sizeof(nltype *) , timecmp );
68     for ( idx = 0 ; idx < nname ; idx += 1 ) {
69 	np = sortednlp[ idx ];
70 	flatprofline( np );
71     }
72     actime = 0.0;
73     free( sortednlp );
74 }
75 
76 int
77 timecmp(const void *v1, const void *v2)
78 {
79     const nltype **npp1 = (const nltype **)v1;
80     const nltype **npp2 = (const nltype **)v2;
81     double	timediff;
82     long	calldiff;
83 
84     timediff = (*npp2) -> time - (*npp1) -> time;
85     if ( timediff > 0.0 )
86 	return 1 ;
87     if ( timediff < 0.0 )
88 	return -1;
89     calldiff = (*npp2) -> ncall - (*npp1) -> ncall;
90     if ( calldiff > 0 )
91 	return 1;
92     if ( calldiff < 0 )
93 	return -1;
94     return( strcmp( (*npp1) -> name , (*npp2) -> name ) );
95 }
96 
97     /*
98      *	header for flatprofline
99      */
100 void
101 flatprofheader(void)
102 {
103 
104     if ( bflag ) {
105 	printblurb( _PATH_FLAT_BLURB );
106     }
107     printf( "\ngranularity: each sample hit covers %g byte(s)" ,
108 	    scale * HISTORICAL_SCALE_2 );
109     if ( totime > 0.0 ) {
110 	printf( " for %.2f%% of %.2f seconds\n\n" ,
111 		100.0/totime , totime / hz );
112     } else {
113 	printf( " no time accumulated\n\n" );
114 	    /*
115 	     *	this doesn't hurt since all the numerators will be zero.
116 	     */
117 	totime = 1.0;
118     }
119     printf( "%5.5s %10.10s %8.8s %8.8s %8.8s %8.8s  %-8.8s\n" ,
120 	    "%  " , "cumulative" , "self  " , "" , "self  " , "total " , "" );
121     printf( "%5.5s %10.10s %8.8s %8.8s %8.8s %8.8s  %-8.8s\n" ,
122 	    "time" , "seconds " , "seconds" , "calls" ,
123 	    hz >= 10000000 ? "ns/call" : hz >= 10000 ? "us/call" : "ms/call" ,
124 	    hz >= 10000000 ? "ns/call" : hz >= 10000 ? "us/call" : "ms/call" ,
125 	    "name" );
126 }
127 
128 void
129 flatprofline(register nltype *np)
130 {
131 
132     if ( zflag == 0 && np -> ncall == 0 && np -> time == 0 &&
133 	 np -> childtime == 0 ) {
134 	return;
135     }
136     actime += np -> time;
137     if (hz >= 10000)
138 	printf( "%5.1f %10.3f %8.3f" ,
139 	    100 * np -> time / totime , actime / hz , np -> time / hz );
140     else
141 	printf( "%5.1f %10.2f %8.2f" ,
142 	    100 * np -> time / totime , actime / hz , np -> time / hz );
143     if ( np -> ncall != 0 ) {
144 	if (hz >= 10000000)
145 	    printf( " %8ld %8.0f %8.0f  " , np -> ncall ,
146 		1e9 * np -> time / hz / np -> ncall ,
147 		1e9 * ( np -> time + np -> childtime ) / hz / np -> ncall );
148 	else if (hz >= 10000)
149 	    printf( " %8ld %8.0f %8.0f  " , np -> ncall ,
150 		1e6 * np -> time / hz / np -> ncall ,
151 		1e6 * ( np -> time + np -> childtime ) / hz / np -> ncall );
152 	else
153 	    printf( " %8ld %8.2f %8.2f  " , np -> ncall ,
154 		1000 * np -> time / hz / np -> ncall ,
155 		1000 * ( np -> time + np -> childtime ) / hz / np -> ncall );
156     } else if ( np -> time != 0 || np -> childtime != 0 ) {
157 	printf( " %8ld %7.2f%% %8.8s  " , np -> ncall ,
158 	    100 * np -> time / ( np -> time + np -> childtime ) , "" );
159     } else {
160 	printf( " %8.8s %8.8s %8.8s  " , "" , "" , "" );
161     }
162     printname( np );
163     printf( "\n" );
164 }
165 
166 void
167 gprofheader(void)
168 {
169 
170     if ( bflag ) {
171 	printblurb( _PATH_CALLG_BLURB );
172     }
173     printf( "\ngranularity: each sample hit covers %g byte(s)" ,
174 	    scale * HISTORICAL_SCALE_2 );
175     if ( printtime > 0.0 ) {
176 	printf( " for %.2f%% of %.2f seconds\n\n" ,
177 		100.0/printtime , printtime / hz );
178     } else {
179 	printf( " no time propagated\n\n" );
180 	    /*
181 	     *	this doesn't hurt, since all the numerators will be 0.0
182 	     */
183 	printtime = 1.0;
184     }
185     printf( "%6.6s %5.5s %7.7s %11.11s %7.7s/%-7.7s     %-8.8s\n" ,
186 	"" , "" , "" , "" , "called" , "total" , "parents");
187     printf( "%-6.6s %5.5s %7.7s %11.11s %7.7s+%-7.7s %-8.8s\t%5.5s\n" ,
188 	"index" , "%time" , "self" , "descendents" ,
189 	"called" , "self" , "name" , "index" );
190     printf( "%6.6s %5.5s %7.7s %11.11s %7.7s/%-7.7s     %-8.8s\n" ,
191 	"" , "" , "" , "" , "called" , "total" , "children");
192     printf( "\n" );
193 }
194 
195 void
196 gprofline(register nltype *np)
197 {
198     char	kirkbuffer[ BUFSIZ ];
199 
200     sprintf( kirkbuffer , "[%d]" , np -> index );
201     printf( "%-6.6s %5.1f %7.2f %11.2f" ,
202 	    kirkbuffer ,
203 	    100 * ( np -> propself + np -> propchild ) / printtime ,
204 	    np -> propself / hz ,
205 	    np -> propchild / hz );
206     if ( ( np -> ncall + np -> selfcalls ) != 0 ) {
207 	printf( " %7ld" , np -> npropcall );
208 	if ( np -> selfcalls != 0 ) {
209 	    printf( "+%-7ld " , np -> selfcalls );
210 	} else {
211 	    printf( " %7.7s " , "" );
212 	}
213     } else {
214 	printf( " %7.7s %7.7s " , "" , "" );
215     }
216     printname( np );
217     printf( "\n" );
218 }
219 
220 void
221 printgprof(nltype **timesortnlp)
222 {
223     int		idx;
224     nltype	*parentp;
225 
226 	/*
227 	 *	Print out the structured profiling list
228 	 */
229     gprofheader();
230     for ( idx = 0 ; idx < nname + ncycle ; idx ++ ) {
231 	parentp = timesortnlp[ idx ];
232 	if ( zflag == 0 &&
233 	     parentp -> ncall == 0 &&
234 	     parentp -> selfcalls == 0 &&
235 	     parentp -> propself == 0 &&
236 	     parentp -> propchild == 0 ) {
237 	    continue;
238 	}
239 	if ( ! parentp -> printflag ) {
240 	    continue;
241 	}
242 	if ( parentp -> name == 0 && parentp -> cycleno != 0 ) {
243 		/*
244 		 *	cycle header
245 		 */
246 	    printcycle( parentp );
247 	    printmembers( parentp );
248 	} else {
249 	    printparents( parentp );
250 	    gprofline( parentp );
251 	    printchildren( parentp );
252 	}
253 	printf( "\n" );
254 	printf( "-----------------------------------------------\n" );
255 	printf( "\n" );
256     }
257     free( timesortnlp );
258 }
259 
260     /*
261      *	sort by decreasing propagated time
262      *	if times are equal, but one is a cycle header,
263      *		say that's first (e.g. less, i.e. -1).
264      *	if one's name doesn't have an underscore and the other does,
265      *		say the one is first.
266      *	all else being equal, sort by names.
267      */
268 int
269 totalcmp(const void *v1, const void *v2)
270 {
271     const nltype **npp1 = (const nltype **)v1;
272     const nltype **npp2 = (const nltype **)v2;
273     register const nltype *np1 = *npp1;
274     register const nltype *np2 = *npp2;
275     double		diff;
276 
277     diff =    ( np1 -> propself + np1 -> propchild )
278 	    - ( np2 -> propself + np2 -> propchild );
279     if ( diff < 0.0 )
280 	    return 1;
281     if ( diff > 0.0 )
282 	    return -1;
283     if ( np1 -> name == 0 && np1 -> cycleno != 0 )
284 	return -1;
285     if ( np2 -> name == 0 && np2 -> cycleno != 0 )
286 	return 1;
287     if ( np1 -> name == 0 )
288 	return -1;
289     if ( np2 -> name == 0 )
290 	return 1;
291     if ( *(np1 -> name) != '_' && *(np2 -> name) == '_' )
292 	return -1;
293     if ( *(np1 -> name) == '_' && *(np2 -> name) != '_' )
294 	return 1;
295     if ( np1 -> ncall > np2 -> ncall )
296 	return -1;
297     if ( np1 -> ncall < np2 -> ncall )
298 	return 1;
299     return strcmp( np1 -> name , np2 -> name );
300 }
301 
302 void
303 printparents(nltype *childp)
304 {
305     nltype	*parentp;
306     arctype	*arcp;
307     nltype	*cycleheadp;
308 
309     if ( childp -> cyclehead != 0 ) {
310 	cycleheadp = childp -> cyclehead;
311     } else {
312 	cycleheadp = childp;
313     }
314     if ( childp -> parents == 0 ) {
315 	printf( "%6.6s %5.5s %7.7s %11.11s %7.7s %7.7s     <spontaneous>\n" ,
316 		"" , "" , "" , "" , "" , "" );
317 	return;
318     }
319     sortparents( childp );
320     for ( arcp = childp -> parents ; arcp ; arcp = arcp -> arc_parentlist ) {
321 	parentp = arcp -> arc_parentp;
322 	if ( childp == parentp || ( arcp -> arc_flags & DEADARC ) ||
323 	     ( childp->cycleno != 0 && parentp->cycleno == childp->cycleno ) ) {
324 		/*
325 		 *	selfcall or call among siblings
326 		 */
327 	    printf( "%6.6s %5.5s %7.7s %11.11s %7ld %7.7s     " ,
328 		    "" , "" , "" , "" ,
329 		    arcp -> arc_count , "" );
330 	    printname( parentp );
331 	    printf( "\n" );
332 	} else {
333 		/*
334 		 *	regular parent of child
335 		 */
336 	    printf( "%6.6s %5.5s %7.2f %11.2f %7ld/%-7ld     " ,
337 		    "" , "" ,
338 		    arcp -> arc_time / hz , arcp -> arc_childtime / hz ,
339 		    arcp -> arc_count , cycleheadp -> npropcall );
340 	    printname( parentp );
341 	    printf( "\n" );
342 	}
343     }
344 }
345 
346 void
347 printchildren(nltype *parentp)
348 {
349     nltype	*childp;
350     arctype	*arcp;
351 
352     sortchildren( parentp );
353     arcp = parentp -> children;
354     for ( arcp = parentp -> children ; arcp ; arcp = arcp -> arc_childlist ) {
355 	childp = arcp -> arc_childp;
356 	if ( childp == parentp || ( arcp -> arc_flags & DEADARC ) ||
357 	    ( childp->cycleno != 0 && childp->cycleno == parentp->cycleno ) ) {
358 		/*
359 		 *	self call or call to sibling
360 		 */
361 	    printf( "%6.6s %5.5s %7.7s %11.11s %7ld %7.7s     " ,
362 		    "" , "" , "" , "" , arcp -> arc_count , "" );
363 	    printname( childp );
364 	    printf( "\n" );
365 	} else {
366 		/*
367 		 *	regular child of parent
368 		 */
369 	    printf( "%6.6s %5.5s %7.2f %11.2f %7ld/%-7ld     " ,
370 		    "" , "" ,
371 		    arcp -> arc_time / hz , arcp -> arc_childtime / hz ,
372 		    arcp -> arc_count , childp -> cyclehead -> npropcall );
373 	    printname( childp );
374 	    printf( "\n" );
375 	}
376     }
377 }
378 
379 void
380 printname(nltype *selfp)
381 {
382 
383     if ( selfp -> name != 0 ) {
384 	printf( "%s" , selfp -> name );
385 #	ifdef DEBUG
386 	    if ( debug & DFNDEBUG ) {
387 		printf( "{%d} " , selfp -> toporder );
388 	    }
389 	    if ( debug & PROPDEBUG ) {
390 		printf( "%5.2f%% " , selfp -> propfraction );
391 	    }
392 #	endif /* DEBUG */
393     }
394     if ( selfp -> cycleno != 0 ) {
395 	printf( " <cycle %d>" , selfp -> cycleno );
396     }
397     if ( selfp -> index != 0 ) {
398 	if ( selfp -> printflag ) {
399 	    printf( " [%d]" , selfp -> index );
400 	} else {
401 	    printf( " (%d)" , selfp -> index );
402 	}
403     }
404 }
405 
406 void
407 sortchildren(nltype *parentp)
408 {
409     arctype	*arcp;
410     arctype	*detachedp;
411     arctype	sorted;
412     arctype	*prevp;
413 
414 	/*
415 	 *	unlink children from parent,
416 	 *	then insertion sort back on to sorted's children.
417 	 *	    *arcp	the arc you have detached and are inserting.
418 	 *	    *detachedp	the rest of the arcs to be sorted.
419 	 *	    sorted	arc list onto which you insertion sort.
420 	 *	    *prevp	arc before the arc you are comparing.
421 	 */
422     sorted.arc_childlist = 0;
423     for (  (arcp = parentp -> children)&&(detachedp = arcp -> arc_childlist);
424 	    arcp ;
425 	   (arcp = detachedp)&&(detachedp = detachedp -> arc_childlist)) {
426 	    /*
427 	     *	consider *arcp as disconnected
428 	     *	insert it into sorted
429 	     */
430 	for (   prevp = &sorted ;
431 		prevp -> arc_childlist ;
432 		prevp = prevp -> arc_childlist ) {
433 	    if ( arccmp( arcp , prevp -> arc_childlist ) != LESSTHAN ) {
434 		break;
435 	    }
436 	}
437 	arcp -> arc_childlist = prevp -> arc_childlist;
438 	prevp -> arc_childlist = arcp;
439     }
440 	/*
441 	 *	reattach sorted children to parent
442 	 */
443     parentp -> children = sorted.arc_childlist;
444 }
445 
446 void
447 sortparents(nltype *childp)
448 {
449     arctype	*arcp;
450     arctype	*detachedp;
451     arctype	sorted;
452     arctype	*prevp;
453 
454 	/*
455 	 *	unlink parents from child,
456 	 *	then insertion sort back on to sorted's parents.
457 	 *	    *arcp	the arc you have detached and are inserting.
458 	 *	    *detachedp	the rest of the arcs to be sorted.
459 	 *	    sorted	arc list onto which you insertion sort.
460 	 *	    *prevp	arc before the arc you are comparing.
461 	 */
462     sorted.arc_parentlist = 0;
463     for (  (arcp = childp -> parents)&&(detachedp = arcp -> arc_parentlist);
464 	    arcp ;
465 	   (arcp = detachedp)&&(detachedp = detachedp -> arc_parentlist)) {
466 	    /*
467 	     *	consider *arcp as disconnected
468 	     *	insert it into sorted
469 	     */
470 	for (   prevp = &sorted ;
471 		prevp -> arc_parentlist ;
472 		prevp = prevp -> arc_parentlist ) {
473 	    if ( arccmp( arcp , prevp -> arc_parentlist ) != GREATERTHAN ) {
474 		break;
475 	    }
476 	}
477 	arcp -> arc_parentlist = prevp -> arc_parentlist;
478 	prevp -> arc_parentlist = arcp;
479     }
480 	/*
481 	 *	reattach sorted arcs to child
482 	 */
483     childp -> parents = sorted.arc_parentlist;
484 }
485 
486     /*
487      *	print a cycle header
488      */
489 void
490 printcycle(nltype *cyclep)
491 {
492     char	kirkbuffer[ BUFSIZ ];
493 
494     sprintf( kirkbuffer , "[%d]" , cyclep -> index );
495     printf( "%-6.6s %5.1f %7.2f %11.2f %7ld" ,
496 	    kirkbuffer ,
497 	    100 * ( cyclep -> propself + cyclep -> propchild ) / printtime ,
498 	    cyclep -> propself / hz ,
499 	    cyclep -> propchild / hz ,
500 	    cyclep -> npropcall );
501     if ( cyclep -> selfcalls != 0 ) {
502 	printf( "+%-7ld" , cyclep -> selfcalls );
503     } else {
504 	printf( " %7.7s" , "" );
505     }
506     printf( " <cycle %d as a whole>\t[%d]\n" ,
507 	    cyclep -> cycleno , cyclep -> index );
508 }
509 
510     /*
511      *	print the members of a cycle
512      */
513 void
514 printmembers(nltype *cyclep)
515 {
516     nltype	*memberp;
517 
518     sortmembers( cyclep );
519     for ( memberp = cyclep -> cnext ; memberp ; memberp = memberp -> cnext ) {
520 	printf( "%6.6s %5.5s %7.2f %11.2f %7ld" ,
521 		"" , "" , memberp -> propself / hz , memberp -> propchild / hz ,
522 		memberp -> npropcall );
523 	if ( memberp -> selfcalls != 0 ) {
524 	    printf( "+%-7ld" , memberp -> selfcalls );
525 	} else {
526 	    printf( " %7.7s" , "" );
527 	}
528 	printf( "     " );
529 	printname( memberp );
530 	printf( "\n" );
531     }
532 }
533 
534     /*
535      *	sort members of a cycle
536      */
537 void
538 sortmembers(nltype *cyclep)
539 {
540     nltype	*todo;
541     nltype	*doing;
542     nltype	*prev;
543 
544 	/*
545 	 *	detach cycle members from cyclehead,
546 	 *	and insertion sort them back on.
547 	 */
548     todo = cyclep -> cnext;
549     cyclep -> cnext = 0;
550     for (  (doing = todo)&&(todo = doing -> cnext);
551 	    doing ;
552 	   (doing = todo )&&(todo = doing -> cnext )){
553 	for ( prev = cyclep ; prev -> cnext ; prev = prev -> cnext ) {
554 	    if ( membercmp( doing , prev -> cnext ) == GREATERTHAN ) {
555 		break;
556 	    }
557 	}
558 	doing -> cnext = prev -> cnext;
559 	prev -> cnext = doing;
560     }
561 }
562 
563     /*
564      *	major sort is on propself + propchild,
565      *	next is sort on ncalls + selfcalls.
566      */
567 int
568 membercmp(nltype *this, nltype *that)
569 {
570     double	thistime = this -> propself + this -> propchild;
571     double	thattime = that -> propself + that -> propchild;
572     long	thiscalls = this -> ncall + this -> selfcalls;
573     long	thatcalls = that -> ncall + that -> selfcalls;
574 
575     if ( thistime > thattime ) {
576 	return GREATERTHAN;
577     }
578     if ( thistime < thattime ) {
579 	return LESSTHAN;
580     }
581     if ( thiscalls > thatcalls ) {
582 	return GREATERTHAN;
583     }
584     if ( thiscalls < thatcalls ) {
585 	return LESSTHAN;
586     }
587     return EQUALTO;
588 }
589     /*
590      *	compare two arcs to/from the same child/parent.
591      *	- if one arc is a self arc, it's least.
592      *	- if one arc is within a cycle, it's less than.
593      *	- if both arcs are within a cycle, compare arc counts.
594      *	- if neither arc is within a cycle, compare with
595      *		arc_time + arc_childtime as major key
596      *		arc count as minor key
597      */
598 int
599 arccmp(arctype *thisp, arctype *thatp)
600 {
601     nltype	*thisparentp = thisp -> arc_parentp;
602     nltype	*thischildp = thisp -> arc_childp;
603     nltype	*thatparentp = thatp -> arc_parentp;
604     nltype	*thatchildp = thatp -> arc_childp;
605     double	thistime;
606     double	thattime;
607 
608 #   ifdef DEBUG
609 	if ( debug & TIMEDEBUG ) {
610 	    printf( "[arccmp] " );
611 	    printname( thisparentp );
612 	    printf( " calls " );
613 	    printname ( thischildp );
614 	    printf( " %f + %f %ld/%ld\n" ,
615 		    thisp -> arc_time , thisp -> arc_childtime ,
616 		    thisp -> arc_count , thischildp -> ncall );
617 	    printf( "[arccmp] " );
618 	    printname( thatparentp );
619 	    printf( " calls " );
620 	    printname( thatchildp );
621 	    printf( " %f + %f %ld/%ld\n" ,
622 		    thatp -> arc_time , thatp -> arc_childtime ,
623 		    thatp -> arc_count , thatchildp -> ncall );
624 	    printf( "\n" );
625 	}
626 #   endif /* DEBUG */
627     if ( thisparentp == thischildp ) {
628 	    /* this is a self call */
629 	return LESSTHAN;
630     }
631     if ( thatparentp == thatchildp ) {
632 	    /* that is a self call */
633 	return GREATERTHAN;
634     }
635     if ( thisparentp -> cycleno != 0 && thischildp -> cycleno != 0 &&
636 	thisparentp -> cycleno == thischildp -> cycleno ) {
637 	    /* this is a call within a cycle */
638 	if ( thatparentp -> cycleno != 0 && thatchildp -> cycleno != 0 &&
639 	    thatparentp -> cycleno == thatchildp -> cycleno ) {
640 		/* that is a call within the cycle, too */
641 	    if ( thisp -> arc_count < thatp -> arc_count ) {
642 		return LESSTHAN;
643 	    }
644 	    if ( thisp -> arc_count > thatp -> arc_count ) {
645 		return GREATERTHAN;
646 	    }
647 	    return EQUALTO;
648 	} else {
649 		/* that isn't a call within the cycle */
650 	    return LESSTHAN;
651 	}
652     } else {
653 	    /* this isn't a call within a cycle */
654 	if ( thatparentp -> cycleno != 0 && thatchildp -> cycleno != 0 &&
655 	    thatparentp -> cycleno == thatchildp -> cycleno ) {
656 		/* that is a call within a cycle */
657 	    return GREATERTHAN;
658 	} else {
659 		/* neither is a call within a cycle */
660 	    thistime = thisp -> arc_time + thisp -> arc_childtime;
661 	    thattime = thatp -> arc_time + thatp -> arc_childtime;
662 	    if ( thistime < thattime )
663 		return LESSTHAN;
664 	    if ( thistime > thattime )
665 		return GREATERTHAN;
666 	    if ( thisp -> arc_count < thatp -> arc_count )
667 		return LESSTHAN;
668 	    if ( thisp -> arc_count > thatp -> arc_count )
669 		return GREATERTHAN;
670 	    return EQUALTO;
671 	}
672     }
673 }
674 
675 void
676 printblurb(const char *blurbname)
677 {
678     FILE	*blurbfile;
679     int		input;
680 
681     blurbfile = fopen( blurbname , "r" );
682     if ( blurbfile == NULL ) {
683 	warn( "%s" , blurbname );
684 	return;
685     }
686     while ( ( input = getc( blurbfile ) ) != EOF ) {
687 	putchar( input );
688     }
689     fclose( blurbfile );
690 }
691 
692 int
693 namecmp(const void *v1, const void *v2)
694 {
695     const nltype **npp1 = (const nltype **)v1;
696     const nltype **npp2 = (const nltype **)v2;
697 
698     return( strcmp( (*npp1) -> name , (*npp2) -> name ) );
699 }
700 
701 void
702 printindex(void)
703 {
704     nltype		**namesortnlp;
705     register nltype	*nlp;
706     int			idx, nnames, todo, i, j;
707     char		peterbuffer[ BUFSIZ ];
708 
709 	/*
710 	 *	Now, sort regular function name alphabetically
711 	 *	to create an index.
712 	 */
713     namesortnlp = (nltype **) calloc( nname + ncycle , sizeof(nltype *) );
714     if ( namesortnlp == (nltype **) 0 )
715 	errx( 1 , "ran out of memory for sorting");
716     for ( idx = 0 , nnames = 0 ; idx < nname ; idx++ ) {
717 	if ( zflag == 0 && nl[idx].ncall == 0 && nl[idx].time == 0 )
718 		continue;
719 	namesortnlp[nnames++] = &nl[idx];
720     }
721     qsort( namesortnlp , nnames , sizeof(nltype *) , namecmp );
722     for ( idx = 1 , todo = nnames ; idx <= ncycle ; idx++ ) {
723 	namesortnlp[todo++] = &cyclenl[idx];
724     }
725     printf( "\f\nIndex by function name\n\n" );
726     idx = ( todo + 2 ) / 3;
727     for ( i = 0; i < idx ; i++ ) {
728 	for ( j = i; j < todo ; j += idx ) {
729 	    nlp = namesortnlp[ j ];
730 	    if ( nlp -> printflag ) {
731 		sprintf( peterbuffer , "[%d]" , nlp -> index );
732 	    } else {
733 		sprintf( peterbuffer , "(%d)" , nlp -> index );
734 	    }
735 	    if ( j < nnames ) {
736 		printf( "%6.6s %-19.19s" , peterbuffer , nlp -> name );
737 	    } else {
738 		printf( "%6.6s " , peterbuffer );
739 		sprintf( peterbuffer , "<cycle %d>" , nlp -> cycleno );
740 		printf( "%-19.19s" , peterbuffer );
741 	    }
742 	}
743 	printf( "\n" );
744     }
745     free( namesortnlp );
746 }
747