freebsd-dev/usr.bin/gprof/printgprof.c
Warner Losh fbbd9655e5 Renumber copyright clause 4
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by:	Jan Schaumann <jschauma@stevens.edu>
Pull Request:	https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00

747 lines
20 KiB
C

/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if 0
#ifndef lint
static char sccsid[] = "@(#)printgprof.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <err.h>
#include <string.h>
#include "gprof.h"
#include "pathnames.h"
int namecmp(const void *, const void *);
int timecmp(const void *, const void *);
void
printprof(void)
{
register nltype *np;
nltype **sortednlp;
int idx;
actime = 0.0;
printf( "\f\n" );
flatprofheader();
/*
* Sort the symbol table in by time
*/
sortednlp = (nltype **) calloc( nname , sizeof(nltype *) );
if ( sortednlp == (nltype **) 0 )
errx( 1 , "[printprof] ran out of memory for time sorting" );
for ( idx = 0 ; idx < nname ; idx += 1 ) {
sortednlp[ idx ] = &nl[ idx ];
}
qsort( sortednlp , nname , sizeof(nltype *) , timecmp );
for ( idx = 0 ; idx < nname ; idx += 1 ) {
np = sortednlp[ idx ];
flatprofline( np );
}
actime = 0.0;
free( sortednlp );
}
int
timecmp(const void *v1, const void *v2)
{
const nltype **npp1 = (const nltype **)v1;
const nltype **npp2 = (const nltype **)v2;
double timediff;
long calldiff;
timediff = (*npp2) -> time - (*npp1) -> time;
if ( timediff > 0.0 )
return 1 ;
if ( timediff < 0.0 )
return -1;
calldiff = (*npp2) -> ncall - (*npp1) -> ncall;
if ( calldiff > 0 )
return 1;
if ( calldiff < 0 )
return -1;
return( strcmp( (*npp1) -> name , (*npp2) -> name ) );
}
/*
* header for flatprofline
*/
void
flatprofheader(void)
{
if ( bflag ) {
printblurb( _PATH_FLAT_BLURB );
}
printf( "\ngranularity: each sample hit covers %g byte(s)" ,
scale * HISTORICAL_SCALE_2 );
if ( totime > 0.0 ) {
printf( " for %.2f%% of %.2f seconds\n\n" ,
100.0/totime , totime / hz );
} else {
printf( " no time accumulated\n\n" );
/*
* this doesn't hurt since all the numerators will be zero.
*/
totime = 1.0;
}
printf( "%5.5s %10.10s %8.8s %8.8s %8.8s %8.8s %-8.8s\n" ,
"% " , "cumulative" , "self " , "" , "self " , "total " , "" );
printf( "%5.5s %10.10s %8.8s %8.8s %8.8s %8.8s %-8.8s\n" ,
"time" , "seconds " , "seconds" , "calls" ,
hz >= 10000000 ? "ns/call" : hz >= 10000 ? "us/call" : "ms/call" ,
hz >= 10000000 ? "ns/call" : hz >= 10000 ? "us/call" : "ms/call" ,
"name" );
}
void
flatprofline(register nltype *np)
{
if ( zflag == 0 && np -> ncall == 0 && np -> time == 0 &&
np -> childtime == 0 ) {
return;
}
actime += np -> time;
if (hz >= 10000)
printf( "%5.1f %10.3f %8.3f" ,
100 * np -> time / totime , actime / hz , np -> time / hz );
else
printf( "%5.1f %10.2f %8.2f" ,
100 * np -> time / totime , actime / hz , np -> time / hz );
if ( np -> ncall != 0 ) {
if (hz >= 10000000)
printf( " %8ld %8.0f %8.0f " , np -> ncall ,
1e9 * np -> time / hz / np -> ncall ,
1e9 * ( np -> time + np -> childtime ) / hz / np -> ncall );
else if (hz >= 10000)
printf( " %8ld %8.0f %8.0f " , np -> ncall ,
1e6 * np -> time / hz / np -> ncall ,
1e6 * ( np -> time + np -> childtime ) / hz / np -> ncall );
else
printf( " %8ld %8.2f %8.2f " , np -> ncall ,
1000 * np -> time / hz / np -> ncall ,
1000 * ( np -> time + np -> childtime ) / hz / np -> ncall );
} else if ( np -> time != 0 || np -> childtime != 0 ) {
printf( " %8ld %7.2f%% %8.8s " , np -> ncall ,
100 * np -> time / ( np -> time + np -> childtime ) , "" );
} else {
printf( " %8.8s %8.8s %8.8s " , "" , "" , "" );
}
printname( np );
printf( "\n" );
}
void
gprofheader(void)
{
if ( bflag ) {
printblurb( _PATH_CALLG_BLURB );
}
printf( "\ngranularity: each sample hit covers %g byte(s)" ,
scale * HISTORICAL_SCALE_2 );
if ( printtime > 0.0 ) {
printf( " for %.2f%% of %.2f seconds\n\n" ,
100.0/printtime , printtime / hz );
} else {
printf( " no time propagated\n\n" );
/*
* this doesn't hurt, since all the numerators will be 0.0
*/
printtime = 1.0;
}
printf( "%6.6s %5.5s %7.7s %11.11s %7.7s/%-7.7s %-8.8s\n" ,
"" , "" , "" , "" , "called" , "total" , "parents");
printf( "%-6.6s %5.5s %7.7s %11.11s %7.7s+%-7.7s %-8.8s\t%5.5s\n" ,
"index" , "%time" , "self" , "descendents" ,
"called" , "self" , "name" , "index" );
printf( "%6.6s %5.5s %7.7s %11.11s %7.7s/%-7.7s %-8.8s\n" ,
"" , "" , "" , "" , "called" , "total" , "children");
printf( "\n" );
}
void
gprofline(register nltype *np)
{
char kirkbuffer[ BUFSIZ ];
sprintf( kirkbuffer , "[%d]" , np -> index );
printf( "%-6.6s %5.1f %7.2f %11.2f" ,
kirkbuffer ,
100 * ( np -> propself + np -> propchild ) / printtime ,
np -> propself / hz ,
np -> propchild / hz );
if ( ( np -> ncall + np -> selfcalls ) != 0 ) {
printf( " %7ld" , np -> npropcall );
if ( np -> selfcalls != 0 ) {
printf( "+%-7ld " , np -> selfcalls );
} else {
printf( " %7.7s " , "" );
}
} else {
printf( " %7.7s %7.7s " , "" , "" );
}
printname( np );
printf( "\n" );
}
void
printgprof(nltype **timesortnlp)
{
int idx;
nltype *parentp;
/*
* Print out the structured profiling list
*/
gprofheader();
for ( idx = 0 ; idx < nname + ncycle ; idx ++ ) {
parentp = timesortnlp[ idx ];
if ( zflag == 0 &&
parentp -> ncall == 0 &&
parentp -> selfcalls == 0 &&
parentp -> propself == 0 &&
parentp -> propchild == 0 ) {
continue;
}
if ( ! parentp -> printflag ) {
continue;
}
if ( parentp -> name == 0 && parentp -> cycleno != 0 ) {
/*
* cycle header
*/
printcycle( parentp );
printmembers( parentp );
} else {
printparents( parentp );
gprofline( parentp );
printchildren( parentp );
}
printf( "\n" );
printf( "-----------------------------------------------\n" );
printf( "\n" );
}
free( timesortnlp );
}
/*
* sort by decreasing propagated time
* if times are equal, but one is a cycle header,
* say that's first (e.g. less, i.e. -1).
* if one's name doesn't have an underscore and the other does,
* say the one is first.
* all else being equal, sort by names.
*/
int
totalcmp(const void *v1, const void *v2)
{
const nltype **npp1 = (const nltype **)v1;
const nltype **npp2 = (const nltype **)v2;
register const nltype *np1 = *npp1;
register const nltype *np2 = *npp2;
double diff;
diff = ( np1 -> propself + np1 -> propchild )
- ( np2 -> propself + np2 -> propchild );
if ( diff < 0.0 )
return 1;
if ( diff > 0.0 )
return -1;
if ( np1 -> name == 0 && np1 -> cycleno != 0 )
return -1;
if ( np2 -> name == 0 && np2 -> cycleno != 0 )
return 1;
if ( np1 -> name == 0 )
return -1;
if ( np2 -> name == 0 )
return 1;
if ( *(np1 -> name) != '_' && *(np2 -> name) == '_' )
return -1;
if ( *(np1 -> name) == '_' && *(np2 -> name) != '_' )
return 1;
if ( np1 -> ncall > np2 -> ncall )
return -1;
if ( np1 -> ncall < np2 -> ncall )
return 1;
return strcmp( np1 -> name , np2 -> name );
}
void
printparents(nltype *childp)
{
nltype *parentp;
arctype *arcp;
nltype *cycleheadp;
if ( childp -> cyclehead != 0 ) {
cycleheadp = childp -> cyclehead;
} else {
cycleheadp = childp;
}
if ( childp -> parents == 0 ) {
printf( "%6.6s %5.5s %7.7s %11.11s %7.7s %7.7s <spontaneous>\n" ,
"" , "" , "" , "" , "" , "" );
return;
}
sortparents( childp );
for ( arcp = childp -> parents ; arcp ; arcp = arcp -> arc_parentlist ) {
parentp = arcp -> arc_parentp;
if ( childp == parentp || ( arcp -> arc_flags & DEADARC ) ||
( childp->cycleno != 0 && parentp->cycleno == childp->cycleno ) ) {
/*
* selfcall or call among siblings
*/
printf( "%6.6s %5.5s %7.7s %11.11s %7ld %7.7s " ,
"" , "" , "" , "" ,
arcp -> arc_count , "" );
printname( parentp );
printf( "\n" );
} else {
/*
* regular parent of child
*/
printf( "%6.6s %5.5s %7.2f %11.2f %7ld/%-7ld " ,
"" , "" ,
arcp -> arc_time / hz , arcp -> arc_childtime / hz ,
arcp -> arc_count , cycleheadp -> npropcall );
printname( parentp );
printf( "\n" );
}
}
}
void
printchildren(nltype *parentp)
{
nltype *childp;
arctype *arcp;
sortchildren( parentp );
arcp = parentp -> children;
for ( arcp = parentp -> children ; arcp ; arcp = arcp -> arc_childlist ) {
childp = arcp -> arc_childp;
if ( childp == parentp || ( arcp -> arc_flags & DEADARC ) ||
( childp->cycleno != 0 && childp->cycleno == parentp->cycleno ) ) {
/*
* self call or call to sibling
*/
printf( "%6.6s %5.5s %7.7s %11.11s %7ld %7.7s " ,
"" , "" , "" , "" , arcp -> arc_count , "" );
printname( childp );
printf( "\n" );
} else {
/*
* regular child of parent
*/
printf( "%6.6s %5.5s %7.2f %11.2f %7ld/%-7ld " ,
"" , "" ,
arcp -> arc_time / hz , arcp -> arc_childtime / hz ,
arcp -> arc_count , childp -> cyclehead -> npropcall );
printname( childp );
printf( "\n" );
}
}
}
void
printname(nltype *selfp)
{
if ( selfp -> name != 0 ) {
printf( "%s" , selfp -> name );
# ifdef DEBUG
if ( debug & DFNDEBUG ) {
printf( "{%d} " , selfp -> toporder );
}
if ( debug & PROPDEBUG ) {
printf( "%5.2f%% " , selfp -> propfraction );
}
# endif /* DEBUG */
}
if ( selfp -> cycleno != 0 ) {
printf( " <cycle %d>" , selfp -> cycleno );
}
if ( selfp -> index != 0 ) {
if ( selfp -> printflag ) {
printf( " [%d]" , selfp -> index );
} else {
printf( " (%d)" , selfp -> index );
}
}
}
void
sortchildren(nltype *parentp)
{
arctype *arcp;
arctype *detachedp;
arctype sorted;
arctype *prevp;
/*
* unlink children from parent,
* then insertion sort back on to sorted's children.
* *arcp the arc you have detached and are inserting.
* *detachedp the rest of the arcs to be sorted.
* sorted arc list onto which you insertion sort.
* *prevp arc before the arc you are comparing.
*/
sorted.arc_childlist = 0;
for ( (arcp = parentp -> children)&&(detachedp = arcp -> arc_childlist);
arcp ;
(arcp = detachedp)&&(detachedp = detachedp -> arc_childlist)) {
/*
* consider *arcp as disconnected
* insert it into sorted
*/
for ( prevp = &sorted ;
prevp -> arc_childlist ;
prevp = prevp -> arc_childlist ) {
if ( arccmp( arcp , prevp -> arc_childlist ) != LESSTHAN ) {
break;
}
}
arcp -> arc_childlist = prevp -> arc_childlist;
prevp -> arc_childlist = arcp;
}
/*
* reattach sorted children to parent
*/
parentp -> children = sorted.arc_childlist;
}
void
sortparents(nltype *childp)
{
arctype *arcp;
arctype *detachedp;
arctype sorted;
arctype *prevp;
/*
* unlink parents from child,
* then insertion sort back on to sorted's parents.
* *arcp the arc you have detached and are inserting.
* *detachedp the rest of the arcs to be sorted.
* sorted arc list onto which you insertion sort.
* *prevp arc before the arc you are comparing.
*/
sorted.arc_parentlist = 0;
for ( (arcp = childp -> parents)&&(detachedp = arcp -> arc_parentlist);
arcp ;
(arcp = detachedp)&&(detachedp = detachedp -> arc_parentlist)) {
/*
* consider *arcp as disconnected
* insert it into sorted
*/
for ( prevp = &sorted ;
prevp -> arc_parentlist ;
prevp = prevp -> arc_parentlist ) {
if ( arccmp( arcp , prevp -> arc_parentlist ) != GREATERTHAN ) {
break;
}
}
arcp -> arc_parentlist = prevp -> arc_parentlist;
prevp -> arc_parentlist = arcp;
}
/*
* reattach sorted arcs to child
*/
childp -> parents = sorted.arc_parentlist;
}
/*
* print a cycle header
*/
void
printcycle(nltype *cyclep)
{
char kirkbuffer[ BUFSIZ ];
sprintf( kirkbuffer , "[%d]" , cyclep -> index );
printf( "%-6.6s %5.1f %7.2f %11.2f %7ld" ,
kirkbuffer ,
100 * ( cyclep -> propself + cyclep -> propchild ) / printtime ,
cyclep -> propself / hz ,
cyclep -> propchild / hz ,
cyclep -> npropcall );
if ( cyclep -> selfcalls != 0 ) {
printf( "+%-7ld" , cyclep -> selfcalls );
} else {
printf( " %7.7s" , "" );
}
printf( " <cycle %d as a whole>\t[%d]\n" ,
cyclep -> cycleno , cyclep -> index );
}
/*
* print the members of a cycle
*/
void
printmembers(nltype *cyclep)
{
nltype *memberp;
sortmembers( cyclep );
for ( memberp = cyclep -> cnext ; memberp ; memberp = memberp -> cnext ) {
printf( "%6.6s %5.5s %7.2f %11.2f %7ld" ,
"" , "" , memberp -> propself / hz , memberp -> propchild / hz ,
memberp -> npropcall );
if ( memberp -> selfcalls != 0 ) {
printf( "+%-7ld" , memberp -> selfcalls );
} else {
printf( " %7.7s" , "" );
}
printf( " " );
printname( memberp );
printf( "\n" );
}
}
/*
* sort members of a cycle
*/
void
sortmembers(nltype *cyclep)
{
nltype *todo;
nltype *doing;
nltype *prev;
/*
* detach cycle members from cyclehead,
* and insertion sort them back on.
*/
todo = cyclep -> cnext;
cyclep -> cnext = 0;
for ( (doing = todo)&&(todo = doing -> cnext);
doing ;
(doing = todo )&&(todo = doing -> cnext )){
for ( prev = cyclep ; prev -> cnext ; prev = prev -> cnext ) {
if ( membercmp( doing , prev -> cnext ) == GREATERTHAN ) {
break;
}
}
doing -> cnext = prev -> cnext;
prev -> cnext = doing;
}
}
/*
* major sort is on propself + propchild,
* next is sort on ncalls + selfcalls.
*/
int
membercmp(nltype *this, nltype *that)
{
double thistime = this -> propself + this -> propchild;
double thattime = that -> propself + that -> propchild;
long thiscalls = this -> ncall + this -> selfcalls;
long thatcalls = that -> ncall + that -> selfcalls;
if ( thistime > thattime ) {
return GREATERTHAN;
}
if ( thistime < thattime ) {
return LESSTHAN;
}
if ( thiscalls > thatcalls ) {
return GREATERTHAN;
}
if ( thiscalls < thatcalls ) {
return LESSTHAN;
}
return EQUALTO;
}
/*
* compare two arcs to/from the same child/parent.
* - if one arc is a self arc, it's least.
* - if one arc is within a cycle, it's less than.
* - if both arcs are within a cycle, compare arc counts.
* - if neither arc is within a cycle, compare with
* arc_time + arc_childtime as major key
* arc count as minor key
*/
int
arccmp(arctype *thisp, arctype *thatp)
{
nltype *thisparentp = thisp -> arc_parentp;
nltype *thischildp = thisp -> arc_childp;
nltype *thatparentp = thatp -> arc_parentp;
nltype *thatchildp = thatp -> arc_childp;
double thistime;
double thattime;
# ifdef DEBUG
if ( debug & TIMEDEBUG ) {
printf( "[arccmp] " );
printname( thisparentp );
printf( " calls " );
printname ( thischildp );
printf( " %f + %f %ld/%ld\n" ,
thisp -> arc_time , thisp -> arc_childtime ,
thisp -> arc_count , thischildp -> ncall );
printf( "[arccmp] " );
printname( thatparentp );
printf( " calls " );
printname( thatchildp );
printf( " %f + %f %ld/%ld\n" ,
thatp -> arc_time , thatp -> arc_childtime ,
thatp -> arc_count , thatchildp -> ncall );
printf( "\n" );
}
# endif /* DEBUG */
if ( thisparentp == thischildp ) {
/* this is a self call */
return LESSTHAN;
}
if ( thatparentp == thatchildp ) {
/* that is a self call */
return GREATERTHAN;
}
if ( thisparentp -> cycleno != 0 && thischildp -> cycleno != 0 &&
thisparentp -> cycleno == thischildp -> cycleno ) {
/* this is a call within a cycle */
if ( thatparentp -> cycleno != 0 && thatchildp -> cycleno != 0 &&
thatparentp -> cycleno == thatchildp -> cycleno ) {
/* that is a call within the cycle, too */
if ( thisp -> arc_count < thatp -> arc_count ) {
return LESSTHAN;
}
if ( thisp -> arc_count > thatp -> arc_count ) {
return GREATERTHAN;
}
return EQUALTO;
} else {
/* that isn't a call within the cycle */
return LESSTHAN;
}
} else {
/* this isn't a call within a cycle */
if ( thatparentp -> cycleno != 0 && thatchildp -> cycleno != 0 &&
thatparentp -> cycleno == thatchildp -> cycleno ) {
/* that is a call within a cycle */
return GREATERTHAN;
} else {
/* neither is a call within a cycle */
thistime = thisp -> arc_time + thisp -> arc_childtime;
thattime = thatp -> arc_time + thatp -> arc_childtime;
if ( thistime < thattime )
return LESSTHAN;
if ( thistime > thattime )
return GREATERTHAN;
if ( thisp -> arc_count < thatp -> arc_count )
return LESSTHAN;
if ( thisp -> arc_count > thatp -> arc_count )
return GREATERTHAN;
return EQUALTO;
}
}
}
void
printblurb(const char *blurbname)
{
FILE *blurbfile;
int input;
blurbfile = fopen( blurbname , "r" );
if ( blurbfile == NULL ) {
warn( "%s" , blurbname );
return;
}
while ( ( input = getc( blurbfile ) ) != EOF ) {
putchar( input );
}
fclose( blurbfile );
}
int
namecmp(const void *v1, const void *v2)
{
const nltype **npp1 = (const nltype **)v1;
const nltype **npp2 = (const nltype **)v2;
return( strcmp( (*npp1) -> name , (*npp2) -> name ) );
}
void
printindex(void)
{
nltype **namesortnlp;
register nltype *nlp;
int idx, nnames, todo, i, j;
char peterbuffer[ BUFSIZ ];
/*
* Now, sort regular function name alphabetically
* to create an index.
*/
namesortnlp = (nltype **) calloc( nname + ncycle , sizeof(nltype *) );
if ( namesortnlp == (nltype **) 0 )
errx( 1 , "ran out of memory for sorting");
for ( idx = 0 , nnames = 0 ; idx < nname ; idx++ ) {
if ( zflag == 0 && nl[idx].ncall == 0 && nl[idx].time == 0 )
continue;
namesortnlp[nnames++] = &nl[idx];
}
qsort( namesortnlp , nnames , sizeof(nltype *) , namecmp );
for ( idx = 1 , todo = nnames ; idx <= ncycle ; idx++ ) {
namesortnlp[todo++] = &cyclenl[idx];
}
printf( "\f\nIndex by function name\n\n" );
idx = ( todo + 2 ) / 3;
for ( i = 0; i < idx ; i++ ) {
for ( j = i; j < todo ; j += idx ) {
nlp = namesortnlp[ j ];
if ( nlp -> printflag ) {
sprintf( peterbuffer , "[%d]" , nlp -> index );
} else {
sprintf( peterbuffer , "(%d)" , nlp -> index );
}
if ( j < nnames ) {
printf( "%6.6s %-19.19s" , peterbuffer , nlp -> name );
} else {
printf( "%6.6s " , peterbuffer );
sprintf( peterbuffer , "<cycle %d>" , nlp -> cycleno );
printf( "%-19.19s" , peterbuffer );
}
}
printf( "\n" );
}
free( namesortnlp );
}