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6599da04 | 1 | /* ANSI-compatible clock function. |
b207e09c | 2 | Copyright (C) 1994, 1995, 1999 Free Software Foundation, Inc. |
6599da04 JM |
3 | |
4 | This file is part of the libiberty library. This library is free | |
5 | software; you can redistribute it and/or modify it under the | |
6 | terms of the GNU General Public License as published by the | |
7 | Free Software Foundation; either version 2, or (at your option) | |
8 | any later version. | |
9 | ||
10 | This 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 | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with GNU CC; see the file COPYING. If not, write to | |
17 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | As a special exception, if you link this library with files | |
20 | compiled with a GNU compiler to produce an executable, this does not cause | |
21 | the resulting executable to be covered by the GNU General Public License. | |
22 | This exception does not however invalidate any other reasons why | |
23 | the executable file might be covered by the GNU General Public License. */ | |
24 | ||
3affd5f0 JL |
25 | #include "config.h" |
26 | ||
6599da04 JM |
27 | #ifdef HAVE_GETRUSAGE |
28 | #include <sys/time.h> | |
29 | #include <sys/resource.h> | |
30 | #endif | |
31 | ||
32 | #ifdef HAVE_TIMES | |
3affd5f0 | 33 | #ifdef HAVE_SYS_PARAM_H |
6599da04 JM |
34 | #include <sys/param.h> |
35 | #endif | |
36 | #include <sys/times.h> | |
37 | #endif | |
38 | ||
2c45d1a0 RH |
39 | #ifdef HAVE_UNISTD_H |
40 | #include <unistd.h> | |
41 | #endif | |
42 | ||
43 | #ifdef _SC_CLK_TCK | |
44 | #define GNU_HZ sysconf(_SC_CLK_TCK) | |
45 | #else | |
46 | #ifdef HZ | |
47 | #define GNU_HZ HZ | |
48 | #else | |
49 | #ifdef CLOCKS_PER_SEC | |
50 | #define GNU_HZ CLOCKS_PER_SEC | |
51 | #endif | |
52 | #endif | |
b207e09c MK |
53 | #endif |
54 | ||
6599da04 JM |
55 | /* FIXME: should be able to declare as clock_t. */ |
56 | ||
57 | long | |
58 | clock () | |
59 | { | |
60 | #ifdef HAVE_GETRUSAGE | |
61 | struct rusage rusage; | |
62 | ||
63 | getrusage (0, &rusage); | |
64 | return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec | |
65 | + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec); | |
66 | #else | |
67 | #ifdef HAVE_TIMES | |
68 | struct tms tms; | |
69 | ||
70 | times (&tms); | |
2c45d1a0 | 71 | return (tms.tms_utime + tms.tms_stime) * (1000000 / GNU_HZ); |
6599da04 JM |
72 | #else |
73 | #ifdef VMS | |
74 | struct | |
75 | { | |
76 | int proc_user_time; | |
77 | int proc_system_time; | |
78 | int child_user_time; | |
79 | int child_system_time; | |
80 | } vms_times; | |
81 | ||
82 | times (&vms_times); | |
83 | return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000; | |
84 | #else | |
85 | /* A fallback, if nothing else available. */ | |
86 | return 0; | |
87 | #endif /* VMS */ | |
88 | #endif /* HAVE_TIMES */ | |
89 | #endif /* HAVE_GETRUSAGE */ | |
90 | } | |
91 |