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bb70624e JA |
1 | /* times.c - times(3) library function */ |
2 | ||
3 | /* Copyright (C) 1999 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU Bash, the Bourne Again SHell. | |
6 | ||
7 | Bash is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 2, or (at your option) any later | |
10 | version. | |
11 | ||
12 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License along | |
18 | with Bash; see the file COPYING. If not, write to the Free Software | |
19 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ | |
20 | ||
21 | #include <config.h> | |
22 | ||
23 | #if !defined (HAVE_TIMES) | |
24 | ||
25 | #include <sys/types.h> | |
26 | #include <posixtime.h> | |
27 | #include <systimes.h> | |
28 | ||
29 | #if defined (HAVE_SYS_RESOURCE_H) && defined (HAVE_GETRUSAGE) | |
30 | # include <sys/resource.h> | |
31 | #endif /* HAVE_SYS_RESOURCE_H && HAVE_GETRUSAGE */ | |
32 | ||
33 | extern long get_clk_tck(); | |
34 | ||
35 | #define CONVTCK(r) (r.tv_sec * clk_tck + r.tv_usec / (1000000 / clk_tck)) | |
36 | ||
37 | clock_t | |
38 | times(tms) | |
39 | struct tms *tms; | |
40 | { | |
41 | clock_t rv; | |
42 | static long clk_tck = -1; | |
43 | ||
44 | #if defined (HAVE_GETRUSAGE) | |
45 | struct timeval tv; | |
46 | struct rusage ru; | |
47 | ||
48 | if (clk_tck == -1) | |
49 | clk_tck = get_clk_tck(); | |
50 | ||
51 | if (getrusage(RUSAGE_SELF, &ru) < 0) | |
52 | return ((clock_t)-1); | |
53 | tms->tms_utime = CONVTCK(ru.ru_utime); | |
54 | tms->tms_stime = CONVTCK(ru.ru_stime); | |
55 | ||
56 | if (getrusage(RUSAGE_CHILDREN, &ru) < 0) | |
57 | return ((clock_t)-1); | |
58 | tms->tms_cutime = CONVTCK(ru.ru_utime); | |
59 | tms->tms_cstime = CONVTCK(ru.ru_stime); | |
60 | ||
61 | if (gettimeofday(&tv, (struct timezone *) 0) < 0) | |
62 | return ((clock_t)-1); | |
28ef6c31 | 63 | rv = (clock_t)(CONVTCK(tv)); |
bb70624e JA |
64 | #else /* !HAVE_GETRUSAGE */ |
65 | if (clk_tck == -1) | |
66 | clk_tck = get_clk_tck(); | |
67 | ||
68 | /* We can't do anything. */ | |
69 | tms->tms_utime = tms->tms_stime = (clock_t)0; | |
70 | tms->tms_cutime = tms->tms_cstime = (clock_t)0; | |
71 | ||
72 | rv = (clock_t)time((time_t *)0) * clk_tck; | |
73 | # endif /* HAVE_GETRUSAGE */ | |
74 | ||
75 | return rv; | |
76 | } | |
77 | #endif /* !HAVE_TIMES */ |