xref: /freebsd/usr.bin/gprof/printgprof.c (revision f6a3b357e9be4c6423c85eff9a847163a0d307c8)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1983, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #if 0
33 #ifndef lint
34 static char sccsid[] = "@(#)printgprof.c	8.1 (Berkeley) 6/6/93";
35 #endif /* not lint */
36 #endif
37 
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
40 
41 #include <err.h>
42 #include <string.h>
43 
44 #include "gprof.h"
45 #include "pathnames.h"
46 
47 int namecmp(const void *, const void *);
48 int timecmp(const void *, const void *);
49 
50 void
51 printprof(void)
52 {
53     register nltype	*np;
54     nltype		**sortednlp;
55     int			idx;
56 
57     actime = 0.0;
58     printf( "\f\n" );
59     flatprofheader();
60 	/*
61 	 *	Sort the symbol table in by time
62 	 */
63     sortednlp = (nltype **) calloc( nname , sizeof(nltype *) );
64     if ( sortednlp == (nltype **) 0 )
65 	errx( 1 , "[printprof] ran out of memory for time sorting" );
66     for ( idx = 0 ; idx < nname ; idx += 1 ) {
67 	sortednlp[ idx ] = &nl[ idx ];
68     }
69     qsort( sortednlp , nname , sizeof(nltype *) , timecmp );
70     for ( idx = 0 ; idx < nname ; idx += 1 ) {
71 	np = sortednlp[ idx ];
72 	flatprofline( np );
73     }
74     actime = 0.0;
75     free( sortednlp );
76 }
77 
78 int
79 timecmp(const void *v1, const void *v2)
80 {
81     const nltype **npp1 = (const nltype **)v1;
82     const nltype **npp2 = (const nltype **)v2;
83     double	timediff;
84     long	calldiff;
85 
86     timediff = (*npp2) -> time - (*npp1) -> time;
87     if ( timediff > 0.0 )
88 	return 1 ;
89     if ( timediff < 0.0 )
90 	return -1;
91     calldiff = (*npp2) -> ncall - (*npp1) -> ncall;
92     if ( calldiff > 0 )
93 	return 1;
94     if ( calldiff < 0 )
95 	return -1;
96     return( strcmp( (*npp1) -> name , (*npp2) -> name ) );
97 }
98 
99     /*
100      *	header for flatprofline
101      */
102 void
103 flatprofheader(void)
104 {
105 
106     if ( bflag ) {
107 	printblurb( _PATH_FLAT_BLURB );
108     }
109     printf( "\ngranularity: each sample hit covers %g byte(s)" ,
110 	    scale * HISTORICAL_SCALE_2 );
111     if ( totime > 0.0 ) {
112 	printf( " for %.2f%% of %.2f seconds\n\n" ,
113 		100.0/totime , totime / hz );
114     } else {
115 	printf( " no time accumulated\n\n" );
116 	    /*
117 	     *	this doesn't hurt since all the numerators will be zero.
118 	     */
119 	totime = 1.0;
120     }
121     printf( "%5.5s %10.10s %8.8s %8.8s %8.8s %8.8s  %-8.8s\n" ,
122 	    "%  " , "cumulative" , "self  " , "" , "self  " , "total " , "" );
123     printf( "%5.5s %10.10s %8.8s %8.8s %8.8s %8.8s  %-8.8s\n" ,
124 	    "time" , "seconds " , "seconds" , "calls" ,
125 	    hz >= 10000000 ? "ns/call" : hz >= 10000 ? "us/call" : "ms/call" ,
126 	    hz >= 10000000 ? "ns/call" : hz >= 10000 ? "us/call" : "ms/call" ,
127 	    "name" );
128 }
129 
130 void
131 flatprofline(register nltype *np)
132 {
133 
134     if ( zflag == 0 && np -> ncall == 0 && np -> time == 0 &&
135 	 np -> childtime == 0 ) {
136 	return;
137     }
138     actime += np -> time;
139     if (hz >= 10000)
140 	printf( "%5.1f %10.3f %8.3f" ,
141 	    100 * np -> time / totime , actime / hz , np -> time / hz );
142     else
143 	printf( "%5.1f %10.2f %8.2f" ,
144 	    100 * np -> time / totime , actime / hz , np -> time / hz );
145     if ( np -> ncall != 0 ) {
146 	if (hz >= 10000000)
147 	    printf( " %8ld %8.0f %8.0f  " , np -> ncall ,
148 		1e9 * np -> time / hz / np -> ncall ,
149 		1e9 * ( np -> time + np -> childtime ) / hz / np -> ncall );
150 	else if (hz >= 10000)
151 	    printf( " %8ld %8.0f %8.0f  " , np -> ncall ,
152 		1e6 * np -> time / hz / np -> ncall ,
153 		1e6 * ( np -> time + np -> childtime ) / hz / np -> ncall );
154 	else
155 	    printf( " %8ld %8.2f %8.2f  " , np -> ncall ,
156 		1000 * np -> time / hz / np -> ncall ,
157 		1000 * ( np -> time + np -> childtime ) / hz / np -> ncall );
158     } else if ( np -> time != 0 || np -> childtime != 0 ) {
159 	printf( " %8ld %7.2f%% %8.8s  " , np -> ncall ,
160 	    100 * np -> time / ( np -> time + np -> childtime ) , "" );
161     } else {
162 	printf( " %8.8s %8.8s %8.8s  " , "" , "" , "" );
163     }
164     printname( np );
165     printf( "\n" );
166 }
167 
168 void
169 gprofheader(void)
170 {
171 
172     if ( bflag ) {
173 	printblurb( _PATH_CALLG_BLURB );
174     }
175     printf( "\ngranularity: each sample hit covers %g byte(s)" ,
176 	    scale * HISTORICAL_SCALE_2 );
177     if ( printtime > 0.0 ) {
178 	printf( " for %.2f%% of %.2f seconds\n\n" ,
179 		100.0/printtime , printtime / hz );
180     } else {
181 	printf( " no time propagated\n\n" );
182 	    /*
183 	     *	this doesn't hurt, since all the numerators will be 0.0
184 	     */
185 	printtime = 1.0;
186     }
187     printf( "%6.6s %5.5s %7.7s %11.11s %7.7s/%-7.7s     %-8.8s\n" ,
188 	"" , "" , "" , "" , "called" , "total" , "parents");
189     printf( "%-6.6s %5.5s %7.7s %11.11s %7.7s+%-7.7s %-8.8s\t%5.5s\n" ,
190 	"index" , "%time" , "self" , "descendents" ,
191 	"called" , "self" , "name" , "index" );
192     printf( "%6.6s %5.5s %7.7s %11.11s %7.7s/%-7.7s     %-8.8s\n" ,
193 	"" , "" , "" , "" , "called" , "total" , "children");
194     printf( "\n" );
195 }
196 
197 void
198 gprofline(register nltype *np)
199 {
200     char	kirkbuffer[ BUFSIZ ];
201 
202     sprintf( kirkbuffer , "[%d]" , np -> index );
203     printf( "%-6.6s %5.1f %7.2f %11.2f" ,
204 	    kirkbuffer ,
205 	    100 * ( np -> propself + np -> propchild ) / printtime ,
206 	    np -> propself / hz ,
207 	    np -> propchild / hz );
208     if ( ( np -> ncall + np -> selfcalls ) != 0 ) {
209 	printf( " %7ld" , np -> npropcall );
210 	if ( np -> selfcalls != 0 ) {
211 	    printf( "+%-7ld " , np -> selfcalls );
212 	} else {
213 	    printf( " %7.7s " , "" );
214 	}
215     } else {
216 	printf( " %7.7s %7.7s " , "" , "" );
217     }
218     printname( np );
219     printf( "\n" );
220 }
221 
222 void
223 printgprof(nltype **timesortnlp)
224 {
225     int		idx;
226     nltype	*parentp;
227 
228 	/*
229 	 *	Print out the structured profiling list
230 	 */
231     gprofheader();
232     for ( idx = 0 ; idx < nname + ncycle ; idx ++ ) {
233 	parentp = timesortnlp[ idx ];
234 	if ( zflag == 0 &&
235 	     parentp -> ncall == 0 &&
236 	     parentp -> selfcalls == 0 &&
237 	     parentp -> propself == 0 &&
238 	     parentp -> propchild == 0 ) {
239 	    continue;
240 	}
241 	if ( ! parentp -> printflag ) {
242 	    continue;
243 	}
244 	if ( parentp -> name == 0 && parentp -> cycleno != 0 ) {
245 		/*
246 		 *	cycle header
247 		 */
248 	    printcycle( parentp );
249 	    printmembers( parentp );
250 	} else {
251 	    printparents( parentp );
252 	    gprofline( parentp );
253 	    printchildren( parentp );
254 	}
255 	printf( "\n" );
256 	printf( "-----------------------------------------------\n" );
257 	printf( "\n" );
258     }
259     free( timesortnlp );
260 }
261 
262     /*
263      *	sort by decreasing propagated time
264      *	if times are equal, but one is a cycle header,
265      *		say that's first (e.g. less, i.e. -1).
266      *	if one's name doesn't have an underscore and the other does,
267      *		say the one is first.
268      *	all else being equal, sort by names.
269      */
270 int
271 totalcmp(const void *v1, const void *v2)
272 {
273     const nltype **npp1 = (const nltype **)v1;
274     const nltype **npp2 = (const nltype **)v2;
275     register const nltype *np1 = *npp1;
276     register const nltype *np2 = *npp2;
277     double		diff;
278 
279     diff =    ( np1 -> propself + np1 -> propchild )
280 	    - ( np2 -> propself + np2 -> propchild );
281     if ( diff < 0.0 )
282 	    return 1;
283     if ( diff > 0.0 )
284 	    return -1;
285     if ( np1 -> name == 0 && np1 -> cycleno != 0 )
286 	return -1;
287     if ( np2 -> name == 0 && np2 -> cycleno != 0 )
288 	return 1;
289     if ( np1 -> name == 0 )
290 	return -1;
291     if ( np2 -> name == 0 )
292 	return 1;
293     if ( *(np1 -> name) != '_' && *(np2 -> name) == '_' )
294 	return -1;
295     if ( *(np1 -> name) == '_' && *(np2 -> name) != '_' )
296 	return 1;
297     if ( np1 -> ncall > np2 -> ncall )
298 	return -1;
299     if ( np1 -> ncall < np2 -> ncall )
300 	return 1;
301     return strcmp( np1 -> name , np2 -> name );
302 }
303 
304 void
305 printparents(nltype *childp)
306 {
307     nltype	*parentp;
308     arctype	*arcp;
309     nltype	*cycleheadp;
310 
311     if ( childp -> cyclehead != 0 ) {
312 	cycleheadp = childp -> cyclehead;
313     } else {
314 	cycleheadp = childp;
315     }
316     if ( childp -> parents == 0 ) {
317 	printf( "%6.6s %5.5s %7.7s %11.11s %7.7s %7.7s     <spontaneous>\n" ,
318 		"" , "" , "" , "" , "" , "" );
319 	return;
320     }
321     sortparents( childp );
322     for ( arcp = childp -> parents ; arcp ; arcp = arcp -> arc_parentlist ) {
323 	parentp = arcp -> arc_parentp;
324 	if ( childp == parentp || ( arcp -> arc_flags & DEADARC ) ||
325 	     ( childp->cycleno != 0 && parentp->cycleno == childp->cycleno ) ) {
326 		/*
327 		 *	selfcall or call among siblings
328 		 */
329 	    printf( "%6.6s %5.5s %7.7s %11.11s %7ld %7.7s     " ,
330 		    "" , "" , "" , "" ,
331 		    arcp -> arc_count , "" );
332 	    printname( parentp );
333 	    printf( "\n" );
334 	} else {
335 		/*
336 		 *	regular parent of child
337 		 */
338 	    printf( "%6.6s %5.5s %7.2f %11.2f %7ld/%-7ld     " ,
339 		    "" , "" ,
340 		    arcp -> arc_time / hz , arcp -> arc_childtime / hz ,
341 		    arcp -> arc_count , cycleheadp -> npropcall );
342 	    printname( parentp );
343 	    printf( "\n" );
344 	}
345     }
346 }
347 
348 void
349 printchildren(nltype *parentp)
350 {
351     nltype	*childp;
352     arctype	*arcp;
353 
354     sortchildren( parentp );
355     arcp = parentp -> children;
356     for ( arcp = parentp -> children ; arcp ; arcp = arcp -> arc_childlist ) {
357 	childp = arcp -> arc_childp;
358 	if ( childp == parentp || ( arcp -> arc_flags & DEADARC ) ||
359 	    ( childp->cycleno != 0 && childp->cycleno == parentp->cycleno ) ) {
360 		/*
361 		 *	self call or call to sibling
362 		 */
363 	    printf( "%6.6s %5.5s %7.7s %11.11s %7ld %7.7s     " ,
364 		    "" , "" , "" , "" , arcp -> arc_count , "" );
365 	    printname( childp );
366 	    printf( "\n" );
367 	} else {
368 		/*
369 		 *	regular child of parent
370 		 */
371 	    printf( "%6.6s %5.5s %7.2f %11.2f %7ld/%-7ld     " ,
372 		    "" , "" ,
373 		    arcp -> arc_time / hz , arcp -> arc_childtime / hz ,
374 		    arcp -> arc_count , childp -> cyclehead -> npropcall );
375 	    printname( childp );
376 	    printf( "\n" );
377 	}
378     }
379 }
380 
381 void
382 printname(nltype *selfp)
383 {
384 
385     if ( selfp -> name != 0 ) {
386 	printf( "%s" , selfp -> name );
387 #	ifdef DEBUG
388 	    if ( debug & DFNDEBUG ) {
389 		printf( "{%d} " , selfp -> toporder );
390 	    }
391 	    if ( debug & PROPDEBUG ) {
392 		printf( "%5.2f%% " , selfp -> propfraction );
393 	    }
394 #	endif /* DEBUG */
395     }
396     if ( selfp -> cycleno != 0 ) {
397 	printf( " <cycle %d>" , selfp -> cycleno );
398     }
399     if ( selfp -> index != 0 ) {
400 	if ( selfp -> printflag ) {
401 	    printf( " [%d]" , selfp -> index );
402 	} else {
403 	    printf( " (%d)" , selfp -> index );
404 	}
405     }
406 }
407 
408 void
409 sortchildren(nltype *parentp)
410 {
411     arctype	*arcp;
412     arctype	*detachedp;
413     arctype	sorted;
414     arctype	*prevp;
415 
416 	/*
417 	 *	unlink children from parent,
418 	 *	then insertion sort back on to sorted's children.
419 	 *	    *arcp	the arc you have detached and are inserting.
420 	 *	    *detachedp	the rest of the arcs to be sorted.
421 	 *	    sorted	arc list onto which you insertion sort.
422 	 *	    *prevp	arc before the arc you are comparing.
423 	 */
424     sorted.arc_childlist = 0;
425     for (  (arcp = parentp -> children)&&(detachedp = arcp -> arc_childlist);
426 	    arcp ;
427 	   (arcp = detachedp)&&(detachedp = detachedp -> arc_childlist)) {
428 	    /*
429 	     *	consider *arcp as disconnected
430 	     *	insert it into sorted
431 	     */
432 	for (   prevp = &sorted ;
433 		prevp -> arc_childlist ;
434 		prevp = prevp -> arc_childlist ) {
435 	    if ( arccmp( arcp , prevp -> arc_childlist ) != LESSTHAN ) {
436 		break;
437 	    }
438 	}
439 	arcp -> arc_childlist = prevp -> arc_childlist;
440 	prevp -> arc_childlist = arcp;
441     }
442 	/*
443 	 *	reattach sorted children to parent
444 	 */
445     parentp -> children = sorted.arc_childlist;
446 }
447 
448 void
449 sortparents(nltype *childp)
450 {
451     arctype	*arcp;
452     arctype	*detachedp;
453     arctype	sorted;
454     arctype	*prevp;
455 
456 	/*
457 	 *	unlink parents from child,
458 	 *	then insertion sort back on to sorted's parents.
459 	 *	    *arcp	the arc you have detached and are inserting.
460 	 *	    *detachedp	the rest of the arcs to be sorted.
461 	 *	    sorted	arc list onto which you insertion sort.
462 	 *	    *prevp	arc before the arc you are comparing.
463 	 */
464     sorted.arc_parentlist = 0;
465     for (  (arcp = childp -> parents)&&(detachedp = arcp -> arc_parentlist);
466 	    arcp ;
467 	   (arcp = detachedp)&&(detachedp = detachedp -> arc_parentlist)) {
468 	    /*
469 	     *	consider *arcp as disconnected
470 	     *	insert it into sorted
471 	     */
472 	for (   prevp = &sorted ;
473 		prevp -> arc_parentlist ;
474 		prevp = prevp -> arc_parentlist ) {
475 	    if ( arccmp( arcp , prevp -> arc_parentlist ) != GREATERTHAN ) {
476 		break;
477 	    }
478 	}
479 	arcp -> arc_parentlist = prevp -> arc_parentlist;
480 	prevp -> arc_parentlist = arcp;
481     }
482 	/*
483 	 *	reattach sorted arcs to child
484 	 */
485     childp -> parents = sorted.arc_parentlist;
486 }
487 
488     /*
489      *	print a cycle header
490      */
491 void
492 printcycle(nltype *cyclep)
493 {
494     char	kirkbuffer[ BUFSIZ ];
495 
496     sprintf( kirkbuffer , "[%d]" , cyclep -> index );
497     printf( "%-6.6s %5.1f %7.2f %11.2f %7ld" ,
498 	    kirkbuffer ,
499 	    100 * ( cyclep -> propself + cyclep -> propchild ) / printtime ,
500 	    cyclep -> propself / hz ,
501 	    cyclep -> propchild / hz ,
502 	    cyclep -> npropcall );
503     if ( cyclep -> selfcalls != 0 ) {
504 	printf( "+%-7ld" , cyclep -> selfcalls );
505     } else {
506 	printf( " %7.7s" , "" );
507     }
508     printf( " <cycle %d as a whole>\t[%d]\n" ,
509 	    cyclep -> cycleno , cyclep -> index );
510 }
511 
512     /*
513      *	print the members of a cycle
514      */
515 void
516 printmembers(nltype *cyclep)
517 {
518     nltype	*memberp;
519 
520     sortmembers( cyclep );
521     for ( memberp = cyclep -> cnext ; memberp ; memberp = memberp -> cnext ) {
522 	printf( "%6.6s %5.5s %7.2f %11.2f %7ld" ,
523 		"" , "" , memberp -> propself / hz , memberp -> propchild / hz ,
524 		memberp -> npropcall );
525 	if ( memberp -> selfcalls != 0 ) {
526 	    printf( "+%-7ld" , memberp -> selfcalls );
527 	} else {
528 	    printf( " %7.7s" , "" );
529 	}
530 	printf( "     " );
531 	printname( memberp );
532 	printf( "\n" );
533     }
534 }
535 
536     /*
537      *	sort members of a cycle
538      */
539 void
540 sortmembers(nltype *cyclep)
541 {
542     nltype	*todo;
543     nltype	*doing;
544     nltype	*prev;
545 
546 	/*
547 	 *	detach cycle members from cyclehead,
548 	 *	and insertion sort them back on.
549 	 */
550     todo = cyclep -> cnext;
551     cyclep -> cnext = 0;
552     for (  (doing = todo)&&(todo = doing -> cnext);
553 	    doing ;
554 	   (doing = todo )&&(todo = doing -> cnext )){
555 	for ( prev = cyclep ; prev -> cnext ; prev = prev -> cnext ) {
556 	    if ( membercmp( doing , prev -> cnext ) == GREATERTHAN ) {
557 		break;
558 	    }
559 	}
560 	doing -> cnext = prev -> cnext;
561 	prev -> cnext = doing;
562     }
563 }
564 
565     /*
566      *	major sort is on propself + propchild,
567      *	next is sort on ncalls + selfcalls.
568      */
569 int
570 membercmp(nltype *this, nltype *that)
571 {
572     double	thistime = this -> propself + this -> propchild;
573     double	thattime = that -> propself + that -> propchild;
574     long	thiscalls = this -> ncall + this -> selfcalls;
575     long	thatcalls = that -> ncall + that -> selfcalls;
576 
577     if ( thistime > thattime ) {
578 	return GREATERTHAN;
579     }
580     if ( thistime < thattime ) {
581 	return LESSTHAN;
582     }
583     if ( thiscalls > thatcalls ) {
584 	return GREATERTHAN;
585     }
586     if ( thiscalls < thatcalls ) {
587 	return LESSTHAN;
588     }
589     return EQUALTO;
590 }
591     /*
592      *	compare two arcs to/from the same child/parent.
593      *	- if one arc is a self arc, it's least.
594      *	- if one arc is within a cycle, it's less than.
595      *	- if both arcs are within a cycle, compare arc counts.
596      *	- if neither arc is within a cycle, compare with
597      *		arc_time + arc_childtime as major key
598      *		arc count as minor key
599      */
600 int
601 arccmp(arctype *thisp, arctype *thatp)
602 {
603     nltype	*thisparentp = thisp -> arc_parentp;
604     nltype	*thischildp = thisp -> arc_childp;
605     nltype	*thatparentp = thatp -> arc_parentp;
606     nltype	*thatchildp = thatp -> arc_childp;
607     double	thistime;
608     double	thattime;
609 
610 #   ifdef DEBUG
611 	if ( debug & TIMEDEBUG ) {
612 	    printf( "[arccmp] " );
613 	    printname( thisparentp );
614 	    printf( " calls " );
615 	    printname ( thischildp );
616 	    printf( " %f + %f %ld/%ld\n" ,
617 		    thisp -> arc_time , thisp -> arc_childtime ,
618 		    thisp -> arc_count , thischildp -> ncall );
619 	    printf( "[arccmp] " );
620 	    printname( thatparentp );
621 	    printf( " calls " );
622 	    printname( thatchildp );
623 	    printf( " %f + %f %ld/%ld\n" ,
624 		    thatp -> arc_time , thatp -> arc_childtime ,
625 		    thatp -> arc_count , thatchildp -> ncall );
626 	    printf( "\n" );
627 	}
628 #   endif /* DEBUG */
629     if ( thisparentp == thischildp ) {
630 	    /* this is a self call */
631 	return LESSTHAN;
632     }
633     if ( thatparentp == thatchildp ) {
634 	    /* that is a self call */
635 	return GREATERTHAN;
636     }
637     if ( thisparentp -> cycleno != 0 && thischildp -> cycleno != 0 &&
638 	thisparentp -> cycleno == thischildp -> cycleno ) {
639 	    /* this is a call within a cycle */
640 	if ( thatparentp -> cycleno != 0 && thatchildp -> cycleno != 0 &&
641 	    thatparentp -> cycleno == thatchildp -> cycleno ) {
642 		/* that is a call within the cycle, too */
643 	    if ( thisp -> arc_count < thatp -> arc_count ) {
644 		return LESSTHAN;
645 	    }
646 	    if ( thisp -> arc_count > thatp -> arc_count ) {
647 		return GREATERTHAN;
648 	    }
649 	    return EQUALTO;
650 	} else {
651 		/* that isn't a call within the cycle */
652 	    return LESSTHAN;
653 	}
654     } else {
655 	    /* this isn't a call within a cycle */
656 	if ( thatparentp -> cycleno != 0 && thatchildp -> cycleno != 0 &&
657 	    thatparentp -> cycleno == thatchildp -> cycleno ) {
658 		/* that is a call within a cycle */
659 	    return GREATERTHAN;
660 	} else {
661 		/* neither is a call within a cycle */
662 	    thistime = thisp -> arc_time + thisp -> arc_childtime;
663 	    thattime = thatp -> arc_time + thatp -> arc_childtime;
664 	    if ( thistime < thattime )
665 		return LESSTHAN;
666 	    if ( thistime > thattime )
667 		return GREATERTHAN;
668 	    if ( thisp -> arc_count < thatp -> arc_count )
669 		return LESSTHAN;
670 	    if ( thisp -> arc_count > thatp -> arc_count )
671 		return GREATERTHAN;
672 	    return EQUALTO;
673 	}
674     }
675 }
676 
677 void
678 printblurb(const char *blurbname)
679 {
680     FILE	*blurbfile;
681     int		input;
682 
683     blurbfile = fopen( blurbname , "r" );
684     if ( blurbfile == NULL ) {
685 	warn( "%s" , blurbname );
686 	return;
687     }
688     while ( ( input = getc( blurbfile ) ) != EOF ) {
689 	putchar( input );
690     }
691     fclose( blurbfile );
692 }
693 
694 int
695 namecmp(const void *v1, const void *v2)
696 {
697     const nltype **npp1 = (const nltype **)v1;
698     const nltype **npp2 = (const nltype **)v2;
699 
700     return( strcmp( (*npp1) -> name , (*npp2) -> name ) );
701 }
702 
703 void
704 printindex(void)
705 {
706     nltype		**namesortnlp;
707     register nltype	*nlp;
708     int			idx, nnames, todo, i, j;
709     char		peterbuffer[ BUFSIZ ];
710 
711 	/*
712 	 *	Now, sort regular function name alphabetically
713 	 *	to create an index.
714 	 */
715     namesortnlp = (nltype **) calloc( nname + ncycle , sizeof(nltype *) );
716     if ( namesortnlp == (nltype **) 0 )
717 	errx( 1 , "ran out of memory for sorting");
718     for ( idx = 0 , nnames = 0 ; idx < nname ; idx++ ) {
719 	if ( zflag == 0 && nl[idx].ncall == 0 && nl[idx].time == 0 )
720 		continue;
721 	namesortnlp[nnames++] = &nl[idx];
722     }
723     qsort( namesortnlp , nnames , sizeof(nltype *) , namecmp );
724     for ( idx = 1 , todo = nnames ; idx <= ncycle ; idx++ ) {
725 	namesortnlp[todo++] = &cyclenl[idx];
726     }
727     printf( "\f\nIndex by function name\n\n" );
728     idx = ( todo + 2 ) / 3;
729     for ( i = 0; i < idx ; i++ ) {
730 	for ( j = i; j < todo ; j += idx ) {
731 	    nlp = namesortnlp[ j ];
732 	    if ( nlp -> printflag ) {
733 		sprintf( peterbuffer , "[%d]" , nlp -> index );
734 	    } else {
735 		sprintf( peterbuffer , "(%d)" , nlp -> index );
736 	    }
737 	    if ( j < nnames ) {
738 		printf( "%6.6s %-19.19s" , peterbuffer , nlp -> name );
739 	    } else {
740 		printf( "%6.6s " , peterbuffer );
741 		sprintf( peterbuffer , "<cycle %d>" , nlp -> cycleno );
742 		printf( "%-19.19s" , peterbuffer );
743 	    }
744 	}
745 	printf( "\n" );
746     }
747     free( namesortnlp );
748 }
749