117 lines
3.7 KiB
C
117 lines
3.7 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
/*static char sccsid[] = "from: @(#)lookup.c 8.1 (Berkeley) 6/6/93";*/
|
|
static char *rcsid = "$Id: lookup.c,v 1.4 1994/10/06 15:40:03 mycroft Exp $";
|
|
#endif /* not lint */
|
|
|
|
#include "gprof.h"
|
|
|
|
/*
|
|
* look up an address in a sorted-by-address namelist
|
|
* this deals with misses by mapping them to the next lower
|
|
* entry point.
|
|
*/
|
|
nltype *
|
|
nllookup( address )
|
|
unsigned long address;
|
|
{
|
|
register long low;
|
|
register long middle;
|
|
register long high;
|
|
# ifdef DEBUG
|
|
register int probes;
|
|
|
|
probes = 0;
|
|
# endif DEBUG
|
|
for ( low = 0 , high = nname - 1 ; low != high ; ) {
|
|
# ifdef DEBUG
|
|
probes += 1;
|
|
# endif DEBUG
|
|
middle = ( high + low ) >> 1;
|
|
if ( nl[ middle ].value <= address && nl[ middle+1 ].value > address ) {
|
|
# ifdef DEBUG
|
|
if ( debug & LOOKUPDEBUG ) {
|
|
printf( "[nllookup] %d (%d) probes\n" , probes , nname-1 );
|
|
}
|
|
# endif DEBUG
|
|
return &nl[ middle ];
|
|
}
|
|
if ( nl[ middle ].value > address ) {
|
|
high = middle;
|
|
} else {
|
|
low = middle + 1;
|
|
}
|
|
}
|
|
# ifdef DEBUG
|
|
if ( debug & LOOKUPDEBUG ) {
|
|
fprintf( stderr , "[nllookup] (%d) binary search fails\n" ,
|
|
nname-1 );
|
|
}
|
|
# endif DEBUG
|
|
return 0;
|
|
}
|
|
|
|
arctype *
|
|
arclookup( parentp , childp )
|
|
nltype *parentp;
|
|
nltype *childp;
|
|
{
|
|
arctype *arcp;
|
|
|
|
if ( parentp == 0 || childp == 0 ) {
|
|
fprintf( stderr, "[arclookup] parentp == 0 || childp == 0\n" );
|
|
return 0;
|
|
}
|
|
# ifdef DEBUG
|
|
if ( debug & LOOKUPDEBUG ) {
|
|
printf( "[arclookup] parent %s child %s\n" ,
|
|
parentp -> name , childp -> name );
|
|
}
|
|
# endif DEBUG
|
|
for ( arcp = parentp -> children ; arcp ; arcp = arcp -> arc_childlist ) {
|
|
# ifdef DEBUG
|
|
if ( debug & LOOKUPDEBUG ) {
|
|
printf( "[arclookup]\t arc_parent %s arc_child %s\n" ,
|
|
arcp -> arc_parentp -> name ,
|
|
arcp -> arc_childp -> name );
|
|
}
|
|
# endif DEBUG
|
|
if ( arcp -> arc_childp == childp ) {
|
|
return arcp;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|