diff options
Diffstat (limited to 'libf2c/libU77/sys_clock_.c')
-rw-r--r-- | libf2c/libU77/sys_clock_.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/libf2c/libU77/sys_clock_.c b/libf2c/libU77/sys_clock_.c new file mode 100644 index 0000000..ea39eea --- /dev/null +++ b/libf2c/libU77/sys_clock_.c @@ -0,0 +1,79 @@ +/* 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 */ +} |