1/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by David Mosberger <davidm@cs.arizona.edu>.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19/* This file specifies the format of gmon.out files. It should have
20 as few external dependencies as possible as it is going to be included
21 in many different programs. That is, minimize the number of #include's.
22
23 A gmon.out file consists of a header (defined by gmon_hdr) followed by
24 a sequence of records. Each record starts with a one-byte tag
25 identifying the type of records, followed by records specific data. */
26
27#ifndef _SYS_GMON_OUT_H
28#define _SYS_GMON_OUT_H 1
29
30#include <features.h>
31
32#define GMON_MAGIC "gmon" /* magic cookie */
33#define GMON_VERSION 1 /* version number */
34
35/* For profiling shared object we need a new format. */
36#define GMON_SHOBJ_VERSION 0x1ffff
37
38__BEGIN_DECLS
39
40/*
41 * Raw header as it appears on file (without padding). This header
42 * always comes first in gmon.out and is then followed by a series
43 * records defined below.
44 */
45struct gmon_hdr
46 {
47 char cookie[4];
48 char version[4];
49 char spare[3 * 4];
50 };
51
52/* types of records in this file: */
53typedef enum
54 {
55 GMON_TAG_TIME_HIST = 0,
56 GMON_TAG_CG_ARC = 1,
57 GMON_TAG_BB_COUNT = 2
58 } GMON_Record_Tag;
59
60struct gmon_hist_hdr
61 {
62 char low_pc[sizeof (char *)]; /* base pc address of sample buffer */
63 char high_pc[sizeof (char *)]; /* max pc address of sampled buffer */
64 char hist_size[4]; /* size of sample buffer */
65 char prof_rate[4]; /* profiling clock rate */
66 char dimen[15]; /* phys. dim., usually "seconds" */
67 char dimen_abbrev; /* usually 's' for "seconds" */
68 };
69
70struct gmon_cg_arc_record
71 {
72 char from_pc[sizeof (char *)]; /* address within caller's body */
73 char self_pc[sizeof (char *)]; /* address within callee's body */
74 char count[4]; /* number of arc traversals */
75 };
76
77__END_DECLS
78
79#endif /* sys/gmon_out.h */
80