2 * Copyright (c) 1991, 2001 The Regents of the University of California.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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)
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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
33 * @(#)gmon.h 5.2 (Berkeley) 5/6/91
38 /* Size of the 4.4BSD gmon header */
39 #define GMON_HDRSIZE_BSD44_32 (4 + 4 + 4 + 4 + 4 + (3 * 4))
40 #define GMON_HDRSIZE_BSD44_64 (8 + 8 + 4 + 4 + 4 + (3 * 4))
42 #if 0 /* For documentation purposes only. */
45 char low_pc
[sizeof(void *)]; /* base pc address of sample buffer */
46 char high_pc
[sizeof(void *)];/* max pc address of sampled buffer */
47 char ncnt
[4]; /* size of sample buffer (plus this
50 char version
[4]; /* version number */
51 char profrate
[4]; /* profiling clock rate */
52 char spare
[3*4]; /* reserved */
56 #define GMONVERSION 0x00051879
58 /* Size of the old BSD gmon header */
59 #define GMON_HDRSIZE_OLDBSD_32 (4 + 4 + 4)
61 /* FIXME: Checking host compiler defines here means that we can't
62 use a cross gprof alpha OSF. */
63 #if defined(__alpha__) && defined (__osf__)
64 #define GMON_HDRSIZE_OLDBSD_64 (8 + 8 + 4 + 4)
66 #define GMON_HDRSIZE_OLDBSD_64 (8 + 8 + 4)
69 #if 0 /* For documentation purposes only. */
72 char low_pc
[sizeof(void *)]; /* base pc address of sample buffer */
73 char high_pc
[sizeof(void *)];/* max pc address of sampled buffer */
74 char ncnt
[4]; /* size of sample buffer (plus this
76 #if defined (__alpha__) && defined (__osf__)
78 * DEC's OSF v3.0 uses 4 bytes of padding to bring the header to
79 * a size that is a multiple of 8.
87 * Histogram counters are unsigned shorts:
89 #define HISTCOUNTER unsigned short
92 * Fraction of text space to allocate for histogram counters here, 1/2:
94 #define HISTFRACTION 2
97 * Fraction of text space to allocate for from hash buckets. The
98 * value of HASHFRACTION is based on the minimum number of bytes of
99 * separation between two subroutine call points in the object code.
100 * Given MIN_SUBR_SEPARATION bytes of separation the value of
101 * HASHFRACTION is calculated as:
103 * HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);
105 * For the VAX, the shortest two call sequence is:
110 * which is separated by only three bytes, thus HASHFRACTION is
113 * HASHFRACTION = 3 / (2 * 2 - 1) = 1
115 * Note that the division above rounds down, thus if MIN_SUBR_FRACTION
116 * is less than three, this algorithm will not work!
118 #define HASHFRACTION 1
121 * Percent of text space to allocate for tostructs with a minimum:
134 * A raw arc, with pointers to the calling site and the called site
135 * and a count. Everything is defined in terms of characters so
136 * as to get a packed representation (otherwise, different compilers
137 * might introduce different padding):
139 #if 0 /* For documentation purposes only. */
142 char from_pc
[sizeof(void *)];
143 char self_pc
[sizeof(void *)];
144 char count
[sizeof(long)];
149 * General rounding functions:
151 #define ROUNDDOWN(x,y) (((x)/(y))*(y))
152 #define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))
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