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comparison src/prof/gmon.h @ 1:f9f4f1b99eed

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importing src directory
author Robert McIntyre <rlm@mit.edu>
date Sat, 03 Mar 2012 10:31:27 -0600
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0:8ced16adf2e1 1:f9f4f1b99eed
1 /*
2 * Copyright (c) 1983, 1991, 1993, 2001
3 * The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29 #ifndef gmon_h
30 #define gmon_h
31
32 #include <stdint.h>
33 typedef uint32_t u32;
34
35 /* Size of the 4.4BSD gmon header */
36 #define GMON_HDRSIZE_BSD44_32 (4 + 4 + 4 + 4 + 4 + (3 * 4))
37 #define GMON_HDRSIZE_BSD44_64 (8 + 8 + 4 + 4 + 4 + (3 * 4))
38
39 #if 0 /* For documentation purposes only. */
40 struct raw_phdr
41 {
42 char low_pc[sizeof(void *)]; /* base pc address of sample buffer */
43 char high_pc[sizeof(void *)];/* max pc address of sampled buffer */
44 char ncnt[4]; /* size of sample buffer (plus this
45 header) */
46
47 char version[4]; /* version number */
48 char profrate[4]; /* profiling clock rate */
49 char spare[3*4]; /* reserved */
50 };
51 #endif
52
53 #define GMONVERSION 0x00051879
54
55 /* Size of the old BSD gmon header */
56 #define GMON_HDRSIZE_OLDBSD_32 (4 + 4 + 4)
57
58 /* FIXME: Checking host compiler defines here means that we can't
59 use a cross gprof alpha OSF. */
60 #if defined(__alpha__) && defined (__osf__)
61 #define GMON_HDRSIZE_OLDBSD_64 (8 + 8 + 4 + 4)
62 #else
63 #define GMON_HDRSIZE_OLDBSD_64 (8 + 8 + 4)
64 #endif
65
66 #if 0 /* For documentation purposes only. */
67 struct old_raw_phdr
68 {
69 char low_pc[sizeof(void *)]; /* base pc address of sample buffer */
70 char high_pc[sizeof(void *)];/* max pc address of sampled buffer */
71 char ncnt[4]; /* size of sample buffer (plus this
72 header) */
73 #if defined (__alpha__) && defined (__osf__)
74 /*
75 * DEC's OSF v3.0 uses 4 bytes of padding to bring the header to
76 * a size that is a multiple of 8.
77 */
78 char pad[4];
79 #endif
80 };
81 #endif
82
83 /*
84 * Histogram counters are unsigned shorts:
85 */
86 #define HISTCOUNTER unsigned short
87
88 /*
89 * Fraction of text space to allocate for histogram counters here, 1/2:
90 */
91 #define HISTFRACTION 2
92
93 /*
94 * Fraction of text space to allocate for from hash buckets. The
95 * value of HASHFRACTION is based on the minimum number of bytes of
96 * separation between two subroutine call points in the object code.
97 * Given MIN_SUBR_SEPARATION bytes of separation the value of
98 * HASHFRACTION is calculated as:
99 *
100 * HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);
101 *
102 * For the VAX, the shortest two call sequence is:
103 *
104 * calls $0,(r0)
105 * calls $0,(r0)
106 *
107 * which is separated by only three bytes, thus HASHFRACTION is
108 * calculated as:
109 *
110 * HASHFRACTION = 3 / (2 * 2 - 1) = 1
111 *
112 * Note that the division above rounds down, thus if MIN_SUBR_FRACTION
113 * is less than three, this algorithm will not work!
114 */
115 #define HASHFRACTION 1
116
117 /*
118 * Percent of text space to allocate for tostructs with a minimum:
119 */
120 #define ARCDENSITY 2
121 #define MINARCS 50
122
123 struct tostruct
124 {
125 u32 selfpc;
126 int count;
127 unsigned short link;
128 };
129
130 /*
131 * A raw arc, with pointers to the calling site and the called site
132 * and a count. Everything is defined in terms of characters so
133 * as to get a packed representation (otherwise, different compilers
134 * might introduce different padding):
135 */
136 #if 0 /* For documentation purposes only. */
137 struct raw_arc
138 {
139 char from_pc[sizeof(void *)];
140 char self_pc[sizeof(void *)];
141 char count[sizeof(long)];
142 };
143 #endif
144
145 /*
146 * General rounding functions:
147 */
148 #define ROUNDDOWN(x,y) (((x)/(y))*(y))
149 #define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))
150
151 #endif /* gmon_h */