| /* Copyright (C) 1996, 1998, 2001 Free Software Foundation, Inc. |
| This file is part of GNU Fortran libU77 library. |
| |
| This library is free software; you can redistribute it and/or modify it |
| under the terms of the GNU Library General Public License as published |
| by the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| GNU Fortran is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with GNU Fortran; see the file COPYING.LIB. If |
| not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| #include <sys/types.h> |
| #if HAVE_SYS_PARAM_H |
| # include <sys/param.h> |
| #endif |
| #if TIME_WITH_SYS_TIME |
| # include <sys/time.h> |
| # include <time.h> |
| #else |
| # if HAVE_SYS_TIME_H |
| # include <sys/time.h> |
| # else |
| # include <time.h> |
| # endif |
| #endif |
| #if HAVE_SYS_TIMES_H |
| # include <sys/times.h> |
| #endif |
| #include <limits.h> |
| #if HAVE_UNISTD_H |
| # include <unistd.h> |
| #endif |
| #include <errno.h> /* for ENOSYS */ |
| #include "f2c.h" |
| |
| int |
| G77_system_clock_0 (integer * count, integer * count_rate, |
| integer * count_max) |
| { |
| #if defined (HAVE_TIMES) |
| struct tms buffer; |
| unsigned long cnt; |
| if (count_rate) |
| { |
| #ifdef _SC_CLK_TCK |
| *count_rate = sysconf (_SC_CLK_TCK); |
| #elif defined CLOCKS_PER_SECOND |
| *count_rate = CLOCKS_PER_SECOND; |
| #elif defined CLK_TCK |
| *count_rate = CLK_TCK; |
| #elif defined HZ |
| *count_rate = HZ; |
| #else |
| #error Dont know clock tick length |
| #endif |
| } |
| if (count_max) /* optional arg present? */ |
| *count_max = INT_MAX; /* dubious */ |
| cnt = times (&buffer); |
| if (cnt > (unsigned long) (INT_MAX)) |
| *count = INT_MAX; /* also dubious */ |
| else |
| *count = cnt; |
| return 0; |
| #else /* ! HAVE_TIMES */ |
| errno = ENOSYS; |
| return -1; |
| #endif /* ! HAVE_TIMES */ |
| } |