[unix-history] / sys / sys / gprof.h

/*-
 * Copyright (c) 1982, 1986 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.
 *
 *	from: @(#)gprof.h	7.2 (Berkeley) 2/15/91
 *	$Id$
 */

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))
Commit	Line	Data
15637ed4 RG	1	/*-
	2	* Copyright (c) 1982, 1986 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
78ed81a3	33	* from: @(#)gprof.h 7.2 (Berkeley) 2/15/91
78ed81a3	34	* $Id$
15637ed4 RG	35	*/
	36
	37	struct phdr {
	38	char *lpc;
	39	char *hpc;
	40	int ncnt;
	41	};
	42
	43	/*
	44	* histogram counters are unsigned shorts (according to the kernel).
	45	*/
	46	#define HISTCOUNTER unsigned short
	47
	48	/*
	49	* fraction of text space to allocate for histogram counters
	50	* here, 1/2
	51	*/
	52	#define HISTFRACTION 2
	53
	54	/*
	55	* Fraction of text space to allocate for from hash buckets.
	56	* The value of HASHFRACTION is based on the minimum number of bytes
	57	* of separation between two subroutine call points in the object code.
	58	* Given MIN_SUBR_SEPARATION bytes of separation the value of
	59	* HASHFRACTION is calculated as:
	60	*
	61	* HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);
	62	*
	63	* For the VAX, the shortest two call sequence is:
	64	*
	65	* calls $0,(r0)
	66	* calls $0,(r0)
	67	*
	68	* which is separated by only three bytes, thus HASHFRACTION is
	69	* calculated as:
	70	*
	71	* HASHFRACTION = 3 / (2 * 2 - 1) = 1
	72	*
	73	* Note that the division above rounds down, thus if MIN_SUBR_FRACTION
	74	* is less than three, this algorithm will not work!
	75	*
	76	* NB: for the kernel we assert that the shortest two call sequence is:
	77	*
	78	* calls $0,_name
	79	* calls $0,_name
	80	*
	81	* which is separated by seven bytes, thus HASHFRACTION is calculated as:
	82	*
	83	* HASHFRACTION = 7 / (2 * 2 - 1) = 2
	84	*/
	85	#define HASHFRACTION 2
	86
	87	/*
	88	* percent of text space to allocate for tostructs
	89	* with a minimum.
	90	*/
	91	#define ARCDENSITY 2
	92	#define MINARCS 50
	93
	94	struct tostruct {
	95	char *selfpc;
	96	long count;
	97	unsigned short link;
	98	};
99
100	/*
101	* a raw arc,
102	* with pointers to the calling site and the called site
103	* and a count.
104	*/
105	struct rawarc {
106	unsigned long raw_frompc;
107	unsigned long raw_selfpc;
108	long raw_count;
109	};
110
111	/*
112	* general rounding functions.
113	*/
114	#define ROUNDDOWN(x,y) (((x)/(y))*(y))
115	#define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))