| 1 | /* Copyright (C) 1996, 1998, 2001 Free Software Foundation, Inc.
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| 2 | This file is part of GNU Fortran libU77 library.
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| 3 |
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| 4 | This library is free software; you can redistribute it and/or modify it
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| 5 | under the terms of the GNU Library General Public License as published
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| 6 | by the Free Software Foundation; either version 2 of the License, or
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| 7 | (at your option) any later version.
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| 8 |
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| 9 | GNU Fortran is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 12 | Library General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU Library General Public
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| 15 | License along with GNU Fortran; see the file COPYING.LIB. If
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| 16 | not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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| 17 | Boston, MA 02111-1307, USA. */
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| 18 |
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| 19 | #ifdef HAVE_CONFIG_H
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| 20 | #include "config.h"
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| 21 | #endif
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| 22 | #include <sys/types.h>
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| 23 | #if HAVE_SYS_PARAM_H
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| 24 | # include <sys/param.h>
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| 25 | #endif
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| 26 | #if TIME_WITH_SYS_TIME
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| 27 | # include <sys/time.h>
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| 28 | # include <time.h>
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| 29 | #else
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| 30 | # if HAVE_SYS_TIME_H
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| 31 | # include <sys/time.h>
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| 32 | # else
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| 33 | # include <time.h>
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| 34 | # endif
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| 35 | #endif
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| 36 | #if HAVE_SYS_TIMES_H
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| 37 | # include <sys/times.h>
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| 38 | #endif
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| 39 | #include <limits.h>
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| 40 | #if HAVE_UNISTD_H
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| 41 | # include <unistd.h>
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| 42 | #endif
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| 43 | #include <errno.h> /* for ENOSYS */
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| 44 | #include "f2c.h"
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| 45 |
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| 46 | #ifdef KR_headers
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| 47 | int G77_system_clock_0 (count, count_rate, count_max)
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| 48 | integer *count, *count_rate, *count_max;
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| 49 | #else
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| 50 | int G77_system_clock_0 (integer *count, integer *count_rate, integer *count_max)
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| 51 | #endif
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| 52 | {
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| 53 | #if defined (HAVE_TIMES)
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| 54 | struct tms buffer;
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| 55 | unsigned long cnt;
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| 56 | if (count_rate) {
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| 57 | #ifdef _SC_CLK_TCK
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| 58 | *count_rate = sysconf(_SC_CLK_TCK);
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| 59 | #elif defined CLOCKS_PER_SECOND
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| 60 | *count_rate = CLOCKS_PER_SECOND;
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| 61 | #elif defined CLK_TCK
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| 62 | *count_rate = CLK_TCK;
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| 63 | #elif defined HZ
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| 64 | *count_rate = HZ;
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| 65 | #else
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| 66 | #error Dont know clock tick length
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| 67 | #endif
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| 68 | }
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| 69 | if (count_max) /* optional arg present? */
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| 70 | *count_max = INT_MAX; /* dubious */
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| 71 | cnt = times (&buffer);
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| 72 | if (cnt > (unsigned long) (INT_MAX))
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| 73 | *count = INT_MAX; /* also dubious */
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| 74 | else
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| 75 | *count = cnt;
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| 76 | return 0;
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| 77 | #else /* ! HAVE_TIMES */
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| 78 | errno = ENOSYS;
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| 79 | return -1;
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| 80 | #endif /* ! HAVE_TIMES */
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| 81 | }
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