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- /*
- * Copyright (c) 1983 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[] = "@(#)lookup.c 5.5 (Berkeley) 2/6/91";
- #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;
- }
- }
- fprintf( stderr , "[nllookup] binary search fails???\n" );
- 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;
- }
-