9138a2e2f6
Makefile: it shouldn't be under cvs; given that it is, fix it too arcs.c: fprintf used where printf should have been. lookup.c: misdeclared calloc; use a cast instead.
566 lines
16 KiB
C
566 lines
16 KiB
C
/*
|
|
* Copyright (c) 1983 Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that: (1) source distributions retain this entire copyright
|
|
* notice and comment, and (2) distributions including binaries display
|
|
* the following acknowledgement: ``This product includes software
|
|
* developed by the University of California, Berkeley and its contributors''
|
|
* in the documentation or other materials provided with the distribution
|
|
* and in all advertising materials mentioning features or use of this
|
|
* software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)arcs.c 5.6 (Berkeley) 6/1/90";
|
|
#endif /* not lint */
|
|
|
|
#include "gprof.h"
|
|
|
|
/*
|
|
* add (or just increment) an arc
|
|
*/
|
|
addarc( parentp , childp , count )
|
|
nltype *parentp;
|
|
nltype *childp;
|
|
long count;
|
|
{
|
|
arctype *arcp;
|
|
|
|
# ifdef DEBUG
|
|
if ( debug & TALLYDEBUG ) {
|
|
printf( "[addarc] %d arcs from %s to %s\n" ,
|
|
count , parentp -> name , childp -> name );
|
|
}
|
|
# endif DEBUG
|
|
arcp = arclookup( parentp , childp );
|
|
if ( arcp != 0 ) {
|
|
/*
|
|
* a hit: just increment the count.
|
|
*/
|
|
# ifdef DEBUG
|
|
if ( debug & TALLYDEBUG ) {
|
|
printf( "[tally] hit %d += %d\n" ,
|
|
arcp -> arc_count , count );
|
|
}
|
|
# endif DEBUG
|
|
arcp -> arc_count += count;
|
|
return;
|
|
}
|
|
arcp = (arctype *) calloc( 1 , sizeof *arcp );
|
|
arcp -> arc_parentp = parentp;
|
|
arcp -> arc_childp = childp;
|
|
arcp -> arc_count = count;
|
|
/*
|
|
* prepend this child to the children of this parent
|
|
*/
|
|
arcp -> arc_childlist = parentp -> children;
|
|
parentp -> children = arcp;
|
|
/*
|
|
* prepend this parent to the parents of this child
|
|
*/
|
|
arcp -> arc_parentlist = childp -> parents;
|
|
childp -> parents = arcp;
|
|
}
|
|
|
|
/*
|
|
* the code below topologically sorts the graph (collapsing cycles),
|
|
* and propagates time bottom up and flags top down.
|
|
*/
|
|
|
|
/*
|
|
* the topologically sorted name list pointers
|
|
*/
|
|
nltype **topsortnlp;
|
|
|
|
topcmp( npp1 , npp2 )
|
|
nltype **npp1;
|
|
nltype **npp2;
|
|
{
|
|
return (*npp1) -> toporder - (*npp2) -> toporder;
|
|
}
|
|
|
|
nltype **
|
|
doarcs()
|
|
{
|
|
nltype *parentp, **timesortnlp;
|
|
arctype *arcp;
|
|
long index;
|
|
|
|
/*
|
|
* initialize various things:
|
|
* zero out child times.
|
|
* count self-recursive calls.
|
|
* indicate that nothing is on cycles.
|
|
*/
|
|
for ( parentp = nl ; parentp < npe ; parentp++ ) {
|
|
parentp -> childtime = 0.0;
|
|
arcp = arclookup( parentp , parentp );
|
|
if ( arcp != 0 ) {
|
|
parentp -> ncall -= arcp -> arc_count;
|
|
parentp -> selfcalls = arcp -> arc_count;
|
|
} else {
|
|
parentp -> selfcalls = 0;
|
|
}
|
|
parentp -> propfraction = 0.0;
|
|
parentp -> propself = 0.0;
|
|
parentp -> propchild = 0.0;
|
|
parentp -> printflag = FALSE;
|
|
parentp -> toporder = DFN_NAN;
|
|
parentp -> cycleno = 0;
|
|
parentp -> cyclehead = parentp;
|
|
parentp -> cnext = 0;
|
|
if ( cflag ) {
|
|
findcall( parentp , parentp -> value , (parentp+1) -> value );
|
|
}
|
|
}
|
|
/*
|
|
* topologically order things
|
|
* if any node is unnumbered,
|
|
* number it and any of its descendents.
|
|
*/
|
|
for ( parentp = nl ; parentp < npe ; parentp++ ) {
|
|
if ( parentp -> toporder == DFN_NAN ) {
|
|
dfn( parentp );
|
|
}
|
|
}
|
|
/*
|
|
* link together nodes on the same cycle
|
|
*/
|
|
cyclelink();
|
|
/*
|
|
* Sort the symbol table in reverse topological order
|
|
*/
|
|
topsortnlp = (nltype **) calloc( nname , sizeof(nltype *) );
|
|
if ( topsortnlp == (nltype **) 0 ) {
|
|
fprintf( stderr , "[doarcs] ran out of memory for topo sorting\n" );
|
|
}
|
|
for ( index = 0 ; index < nname ; index += 1 ) {
|
|
topsortnlp[ index ] = &nl[ index ];
|
|
}
|
|
qsort( topsortnlp , nname , sizeof(nltype *) , topcmp );
|
|
# ifdef DEBUG
|
|
if ( debug & DFNDEBUG ) {
|
|
printf( "[doarcs] topological sort listing\n" );
|
|
for ( index = 0 ; index < nname ; index += 1 ) {
|
|
printf( "[doarcs] " );
|
|
printf( "%d:" , topsortnlp[ index ] -> toporder );
|
|
printname( topsortnlp[ index ] );
|
|
printf( "\n" );
|
|
}
|
|
}
|
|
# endif DEBUG
|
|
/*
|
|
* starting from the topological top,
|
|
* propagate print flags to children.
|
|
* also, calculate propagation fractions.
|
|
* this happens before time propagation
|
|
* since time propagation uses the fractions.
|
|
*/
|
|
doflags();
|
|
/*
|
|
* starting from the topological bottom,
|
|
* propogate children times up to parents.
|
|
*/
|
|
dotime();
|
|
/*
|
|
* Now, sort by propself + propchild.
|
|
* sorting both the regular function names
|
|
* and cycle headers.
|
|
*/
|
|
timesortnlp = (nltype **) calloc( nname + ncycle , sizeof(nltype *) );
|
|
if ( timesortnlp == (nltype **) 0 ) {
|
|
fprintf( stderr , "%s: ran out of memory for sorting\n" , whoami );
|
|
}
|
|
for ( index = 0 ; index < nname ; index++ ) {
|
|
timesortnlp[index] = &nl[index];
|
|
}
|
|
for ( index = 1 ; index <= ncycle ; index++ ) {
|
|
timesortnlp[nname+index-1] = &cyclenl[index];
|
|
}
|
|
qsort( timesortnlp , nname + ncycle , sizeof(nltype *) , totalcmp );
|
|
for ( index = 0 ; index < nname + ncycle ; index++ ) {
|
|
timesortnlp[ index ] -> index = index + 1;
|
|
}
|
|
return( timesortnlp );
|
|
}
|
|
|
|
dotime()
|
|
{
|
|
int index;
|
|
|
|
cycletime();
|
|
for ( index = 0 ; index < nname ; index += 1 ) {
|
|
timepropagate( topsortnlp[ index ] );
|
|
}
|
|
}
|
|
|
|
timepropagate( parentp )
|
|
nltype *parentp;
|
|
{
|
|
arctype *arcp;
|
|
nltype *childp;
|
|
double share;
|
|
double propshare;
|
|
|
|
if ( parentp -> propfraction == 0.0 ) {
|
|
return;
|
|
}
|
|
/*
|
|
* gather time from children of this parent.
|
|
*/
|
|
for ( arcp = parentp -> children ; arcp ; arcp = arcp -> arc_childlist ) {
|
|
childp = arcp -> arc_childp;
|
|
if ( arcp -> arc_count == 0 ) {
|
|
continue;
|
|
}
|
|
if ( childp == parentp ) {
|
|
continue;
|
|
}
|
|
if ( childp -> propfraction == 0.0 ) {
|
|
continue;
|
|
}
|
|
if ( childp -> cyclehead != childp ) {
|
|
if ( parentp -> cycleno == childp -> cycleno ) {
|
|
continue;
|
|
}
|
|
if ( parentp -> toporder <= childp -> toporder ) {
|
|
fprintf( stderr , "[propagate] toporder botches\n" );
|
|
}
|
|
childp = childp -> cyclehead;
|
|
} else {
|
|
if ( parentp -> toporder <= childp -> toporder ) {
|
|
fprintf( stderr , "[propagate] toporder botches\n" );
|
|
continue;
|
|
}
|
|
}
|
|
if ( childp -> ncall == 0 ) {
|
|
continue;
|
|
}
|
|
/*
|
|
* distribute time for this arc
|
|
*/
|
|
arcp -> arc_time = childp -> time
|
|
* ( ( (double) arcp -> arc_count ) /
|
|
( (double) childp -> ncall ) );
|
|
arcp -> arc_childtime = childp -> childtime
|
|
* ( ( (double) arcp -> arc_count ) /
|
|
( (double) childp -> ncall ) );
|
|
share = arcp -> arc_time + arcp -> arc_childtime;
|
|
parentp -> childtime += share;
|
|
/*
|
|
* ( 1 - propfraction ) gets lost along the way
|
|
*/
|
|
propshare = parentp -> propfraction * share;
|
|
/*
|
|
* fix things for printing
|
|
*/
|
|
parentp -> propchild += propshare;
|
|
arcp -> arc_time *= parentp -> propfraction;
|
|
arcp -> arc_childtime *= parentp -> propfraction;
|
|
/*
|
|
* add this share to the parent's cycle header, if any.
|
|
*/
|
|
if ( parentp -> cyclehead != parentp ) {
|
|
parentp -> cyclehead -> childtime += share;
|
|
parentp -> cyclehead -> propchild += propshare;
|
|
}
|
|
# ifdef DEBUG
|
|
if ( debug & PROPDEBUG ) {
|
|
printf( "[dotime] child \t" );
|
|
printname( childp );
|
|
printf( " with %f %f %d/%d\n" ,
|
|
childp -> time , childp -> childtime ,
|
|
arcp -> arc_count , childp -> ncall );
|
|
printf( "[dotime] parent\t" );
|
|
printname( parentp );
|
|
printf( "\n[dotime] share %f\n" , share );
|
|
}
|
|
# endif DEBUG
|
|
}
|
|
}
|
|
|
|
cyclelink()
|
|
{
|
|
register nltype *nlp;
|
|
register nltype *cyclenlp;
|
|
int cycle;
|
|
nltype *memberp;
|
|
arctype *arcp;
|
|
|
|
/*
|
|
* Count the number of cycles, and initialze the cycle lists
|
|
*/
|
|
ncycle = 0;
|
|
for ( nlp = nl ; nlp < npe ; nlp++ ) {
|
|
/*
|
|
* this is how you find unattached cycles
|
|
*/
|
|
if ( nlp -> cyclehead == nlp && nlp -> cnext != 0 ) {
|
|
ncycle += 1;
|
|
}
|
|
}
|
|
/*
|
|
* cyclenl is indexed by cycle number:
|
|
* i.e. it is origin 1, not origin 0.
|
|
*/
|
|
cyclenl = (nltype *) calloc( ncycle + 1 , sizeof( nltype ) );
|
|
if ( cyclenl == 0 ) {
|
|
fprintf( stderr , "%s: No room for %d bytes of cycle headers\n" ,
|
|
whoami , ( ncycle + 1 ) * sizeof( nltype ) );
|
|
done();
|
|
}
|
|
/*
|
|
* now link cycles to true cycleheads,
|
|
* number them, accumulate the data for the cycle
|
|
*/
|
|
cycle = 0;
|
|
for ( nlp = nl ; nlp < npe ; nlp++ ) {
|
|
if ( !( nlp -> cyclehead == nlp && nlp -> cnext != 0 ) ) {
|
|
continue;
|
|
}
|
|
cycle += 1;
|
|
cyclenlp = &cyclenl[cycle];
|
|
cyclenlp -> name = 0; /* the name */
|
|
cyclenlp -> value = 0; /* the pc entry point */
|
|
cyclenlp -> time = 0.0; /* ticks in this routine */
|
|
cyclenlp -> childtime = 0.0; /* cumulative ticks in children */
|
|
cyclenlp -> ncall = 0; /* how many times called */
|
|
cyclenlp -> selfcalls = 0; /* how many calls to self */
|
|
cyclenlp -> propfraction = 0.0; /* what % of time propagates */
|
|
cyclenlp -> propself = 0.0; /* how much self time propagates */
|
|
cyclenlp -> propchild = 0.0; /* how much child time propagates */
|
|
cyclenlp -> printflag = TRUE; /* should this be printed? */
|
|
cyclenlp -> index = 0; /* index in the graph list */
|
|
cyclenlp -> toporder = DFN_NAN; /* graph call chain top-sort order */
|
|
cyclenlp -> cycleno = cycle; /* internal number of cycle on */
|
|
cyclenlp -> cyclehead = cyclenlp; /* pointer to head of cycle */
|
|
cyclenlp -> cnext = nlp; /* pointer to next member of cycle */
|
|
cyclenlp -> parents = 0; /* list of caller arcs */
|
|
cyclenlp -> children = 0; /* list of callee arcs */
|
|
# ifdef DEBUG
|
|
if ( debug & CYCLEDEBUG ) {
|
|
printf( "[cyclelink] " );
|
|
printname( nlp );
|
|
printf( " is the head of cycle %d\n" , cycle );
|
|
}
|
|
# endif DEBUG
|
|
/*
|
|
* link members to cycle header
|
|
*/
|
|
for ( memberp = nlp ; memberp ; memberp = memberp -> cnext ) {
|
|
memberp -> cycleno = cycle;
|
|
memberp -> cyclehead = cyclenlp;
|
|
}
|
|
/*
|
|
* count calls from outside the cycle
|
|
* and those among cycle members
|
|
*/
|
|
for ( memberp = nlp ; memberp ; memberp = memberp -> cnext ) {
|
|
for ( arcp=memberp->parents ; arcp ; arcp=arcp->arc_parentlist ) {
|
|
if ( arcp -> arc_parentp == memberp ) {
|
|
continue;
|
|
}
|
|
if ( arcp -> arc_parentp -> cycleno == cycle ) {
|
|
cyclenlp -> selfcalls += arcp -> arc_count;
|
|
} else {
|
|
cyclenlp -> ncall += arcp -> arc_count;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
cycletime()
|
|
{
|
|
int cycle;
|
|
nltype *cyclenlp;
|
|
nltype *childp;
|
|
|
|
for ( cycle = 1 ; cycle <= ncycle ; cycle += 1 ) {
|
|
cyclenlp = &cyclenl[ cycle ];
|
|
for ( childp = cyclenlp -> cnext ; childp ; childp = childp -> cnext ) {
|
|
if ( childp -> propfraction == 0.0 ) {
|
|
/*
|
|
* all members have the same propfraction except those
|
|
* that were excluded with -E
|
|
*/
|
|
continue;
|
|
}
|
|
cyclenlp -> time += childp -> time;
|
|
}
|
|
cyclenlp -> propself = cyclenlp -> propfraction * cyclenlp -> time;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* in one top to bottom pass over the topologically sorted namelist
|
|
* propagate:
|
|
* printflag as the union of parents' printflags
|
|
* propfraction as the sum of fractional parents' propfractions
|
|
* and while we're here, sum time for functions.
|
|
*/
|
|
doflags()
|
|
{
|
|
int index;
|
|
nltype *childp;
|
|
nltype *oldhead;
|
|
|
|
oldhead = 0;
|
|
for ( index = nname-1 ; index >= 0 ; index -= 1 ) {
|
|
childp = topsortnlp[ index ];
|
|
/*
|
|
* if we haven't done this function or cycle,
|
|
* inherit things from parent.
|
|
* this way, we are linear in the number of arcs
|
|
* since we do all members of a cycle (and the cycle itself)
|
|
* as we hit the first member of the cycle.
|
|
*/
|
|
if ( childp -> cyclehead != oldhead ) {
|
|
oldhead = childp -> cyclehead;
|
|
inheritflags( childp );
|
|
}
|
|
# ifdef DEBUG
|
|
if ( debug & PROPDEBUG ) {
|
|
printf( "[doflags] " );
|
|
printname( childp );
|
|
printf( " inherits printflag %d and propfraction %f\n" ,
|
|
childp -> printflag , childp -> propfraction );
|
|
}
|
|
# endif DEBUG
|
|
if ( ! childp -> printflag ) {
|
|
/*
|
|
* printflag is off
|
|
* it gets turned on by
|
|
* being on -f list,
|
|
* or there not being any -f list and not being on -e list.
|
|
*/
|
|
if ( onlist( flist , childp -> name )
|
|
|| ( !fflag && !onlist( elist , childp -> name ) ) ) {
|
|
childp -> printflag = TRUE;
|
|
}
|
|
} else {
|
|
/*
|
|
* this function has printing parents:
|
|
* maybe someone wants to shut it up
|
|
* by putting it on -e list. (but favor -f over -e)
|
|
*/
|
|
if ( ( !onlist( flist , childp -> name ) )
|
|
&& onlist( elist , childp -> name ) ) {
|
|
childp -> printflag = FALSE;
|
|
}
|
|
}
|
|
if ( childp -> propfraction == 0.0 ) {
|
|
/*
|
|
* no parents to pass time to.
|
|
* collect time from children if
|
|
* its on -F list,
|
|
* or there isn't any -F list and its not on -E list.
|
|
*/
|
|
if ( onlist( Flist , childp -> name )
|
|
|| ( !Fflag && !onlist( Elist , childp -> name ) ) ) {
|
|
childp -> propfraction = 1.0;
|
|
}
|
|
} else {
|
|
/*
|
|
* it has parents to pass time to,
|
|
* but maybe someone wants to shut it up
|
|
* by puttting it on -E list. (but favor -F over -E)
|
|
*/
|
|
if ( !onlist( Flist , childp -> name )
|
|
&& onlist( Elist , childp -> name ) ) {
|
|
childp -> propfraction = 0.0;
|
|
}
|
|
}
|
|
childp -> propself = childp -> time * childp -> propfraction;
|
|
printtime += childp -> propself;
|
|
# ifdef DEBUG
|
|
if ( debug & PROPDEBUG ) {
|
|
printf( "[doflags] " );
|
|
printname( childp );
|
|
printf( " ends up with printflag %d and propfraction %f\n" ,
|
|
childp -> printflag , childp -> propfraction );
|
|
printf( "time %f propself %f printtime %f\n" ,
|
|
childp -> time , childp -> propself , printtime );
|
|
}
|
|
# endif DEBUG
|
|
}
|
|
}
|
|
|
|
/*
|
|
* check if any parent of this child
|
|
* (or outside parents of this cycle)
|
|
* have their print flags on and set the
|
|
* print flag of the child (cycle) appropriately.
|
|
* similarly, deal with propagation fractions from parents.
|
|
*/
|
|
inheritflags( childp )
|
|
nltype *childp;
|
|
{
|
|
nltype *headp;
|
|
arctype *arcp;
|
|
nltype *parentp;
|
|
nltype *memp;
|
|
|
|
headp = childp -> cyclehead;
|
|
if ( childp == headp ) {
|
|
/*
|
|
* just a regular child, check its parents
|
|
*/
|
|
childp -> printflag = FALSE;
|
|
childp -> propfraction = 0.0;
|
|
for (arcp = childp -> parents ; arcp ; arcp = arcp -> arc_parentlist) {
|
|
parentp = arcp -> arc_parentp;
|
|
if ( childp == parentp ) {
|
|
continue;
|
|
}
|
|
childp -> printflag |= parentp -> printflag;
|
|
/*
|
|
* if the child was never actually called
|
|
* (e.g. this arc is static (and all others are, too))
|
|
* no time propagates along this arc.
|
|
*/
|
|
if ( childp -> ncall ) {
|
|
childp -> propfraction += parentp -> propfraction
|
|
* ( ( (double) arcp -> arc_count )
|
|
/ ( (double) childp -> ncall ) );
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* its a member of a cycle, look at all parents from
|
|
* outside the cycle
|
|
*/
|
|
headp -> printflag = FALSE;
|
|
headp -> propfraction = 0.0;
|
|
for ( memp = headp -> cnext ; memp ; memp = memp -> cnext ) {
|
|
for (arcp = memp->parents ; arcp ; arcp = arcp->arc_parentlist) {
|
|
if ( arcp -> arc_parentp -> cyclehead == headp ) {
|
|
continue;
|
|
}
|
|
parentp = arcp -> arc_parentp;
|
|
headp -> printflag |= parentp -> printflag;
|
|
/*
|
|
* if the cycle was never actually called
|
|
* (e.g. this arc is static (and all others are, too))
|
|
* no time propagates along this arc.
|
|
*/
|
|
if ( headp -> ncall ) {
|
|
headp -> propfraction += parentp -> propfraction
|
|
* ( ( (double) arcp -> arc_count )
|
|
/ ( (double) headp -> ncall ) );
|
|
}
|
|
}
|
|
}
|
|
for ( memp = headp ; memp ; memp = memp -> cnext ) {
|
|
memp -> printflag = headp -> printflag;
|
|
memp -> propfraction = headp -> propfraction;
|
|
}
|
|
}
|
|
}
|