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- /*
- * Copyright (c) 1982, 1986 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- *
- * @(#)gprof.h 7.1 (Berkeley) 6/4/86
- */
-
- struct phdr {
- char *lpc;
- char *hpc;
- int ncnt;
- };
-
- /*
- * histogram counters are unsigned shorts (according to the kernel).
- */
- #define HISTCOUNTER unsigned short
-
- /*
- * fraction of text space to allocate for histogram counters
- * here, 1/2
- */
- #define HISTFRACTION 2
-
- /*
- * Fraction of text space to allocate for from hash buckets.
- * The value of HASHFRACTION is based on the minimum number of bytes
- * of separation between two subroutine call points in the object code.
- * Given MIN_SUBR_SEPARATION bytes of separation the value of
- * HASHFRACTION is calculated as:
- *
- * HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);
- *
- * For the VAX, the shortest two call sequence is:
- *
- * calls $0,(r0)
- * calls $0,(r0)
- *
- * which is separated by only three bytes, thus HASHFRACTION is
- * calculated as:
- *
- * HASHFRACTION = 3 / (2 * 2 - 1) = 1
- *
- * Note that the division above rounds down, thus if MIN_SUBR_FRACTION
- * is less than three, this algorithm will not work!
- *
- * NB: for the kernel we assert that the shortest two call sequence is:
- *
- * calls $0,_name
- * calls $0,_name
- *
- * which is separated by seven bytes, thus HASHFRACTION is calculated as:
- *
- * HASHFRACTION = 7 / (2 * 2 - 1) = 2
- */
- #define HASHFRACTION 2
-
- /*
- * percent of text space to allocate for tostructs
- * with a minimum.
- */
- #define ARCDENSITY 2
- #define MINARCS 50
-
- struct tostruct {
- char *selfpc;
- long count;
- unsigned short link;
- };
-
- /*
- * a raw arc,
- * with pointers to the calling site and the called site
- * and a count.
- */
- struct rawarc {
- unsigned long raw_frompc;
- unsigned long raw_selfpc;
- long raw_count;
- };
-
- /*
- * general rounding functions.
- */
- #define ROUNDDOWN(x,y) (((x)/(y))*(y))
- #define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))
-