+++ /dev/null
-/* Copyright (C) 1995, 1996 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
-#if HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-#include <sys/types.h>
-#if HAVE_SYS_TIMES_H
-# include <sys/times.h>
-#endif
-#if HAVE_SYS_PARAM_H
-# include <sys/param.h>
-#endif
-#if HAVE_GETRUSAGE
-# include <sys/time.h>
-# include <sys/resource.h>
-#endif
-#if defined (_WIN32)
-# include <windows.h>
-# undef min
-# undef max
-#endif
-#include <errno.h> /* for ENOSYS */
-#include "f2c.h"
-
-/* For dtime, etime we store the clock tick parameter (clk_tck) the
- first time either of them is invoked rather than each time. This
- approach probably speeds up each invocation by avoiding a system
- call each time, but means that the overhead of the first call is
- different to all others. */
-static long clk_tck = 0;
-
-#ifdef KR_headers
-double G77_dtime_0 (tarray)
- real tarray[2];
-#else
-double G77_dtime_0 (real tarray[2])
-#endif
-{
-#if defined (_WIN32)
- static int win32_platform = -1;
-
- if (win32_platform == -1)
- {
- OSVERSIONINFO osv;
- osv.dwOSVersionInfoSize = sizeof (osv);
- GetVersionEx (&osv);
- win32_platform = osv.dwPlatformId;
- }
-
- /* We need to use this hack on non-NT platforms, where the first call
- returns 0.0 and subsequent ones return the correct value. */
- if (win32_platform != VER_PLATFORM_WIN32_NT)
- {
- static unsigned long long clock_freq;
- static unsigned long long old_count;
- unsigned long long count;
- double delta;
- LARGE_INTEGER counter_val;
-
- if (clock_freq == 0)
- {
- LARGE_INTEGER freq;
- if (! QueryPerformanceFrequency (&freq))
- {
- errno = ENOSYS;
- return 0.0;
- }
- else
- {
- clock_freq = ((unsigned long long) freq.HighPart << 32)
- + ((unsigned) freq.LowPart);
- }
- }
-
- if (! QueryPerformanceCounter (&counter_val))
- return -1.0;
-
- count = ((unsigned long long) counter_val.HighPart << 32)
- + (unsigned) counter_val.LowPart;
- delta = ((double) (count - old_count)) / clock_freq;
- tarray[0] = (float) delta;
- tarray[1] = 0.0;
- old_count = count;
- }
- else
- {
- static unsigned long long old_utime, old_stime;
- unsigned long long utime, stime;
- FILETIME creation_time, exit_time, kernel_time, user_time;
-
- GetProcessTimes (GetCurrentProcess (), &creation_time, &exit_time,
- &kernel_time, &user_time);
- utime = ((unsigned long long) user_time.dwHighDateTime << 32)
- + (unsigned) user_time.dwLowDateTime;
- stime = ((unsigned long long) kernel_time.dwHighDateTime << 32)
- + (unsigned) kernel_time.dwLowDateTime;
-
- tarray[0] = (utime - old_utime) / 1.0e7;
- tarray[1] = (stime - old_stime) / 1.0e7;
- old_utime = utime;
- old_stime = stime;
- }
- return tarray[0] + tarray[1];
-
-#elif defined (HAVE_GETRUSAGE) || defined (HAVE_TIMES)
- /* The getrusage version is only the default for convenience. */
-#ifdef HAVE_GETRUSAGE
- float utime, stime;
- static float old_utime = 0.0, old_stime = 0.0;
- struct rusage rbuff;
-
- if (getrusage (RUSAGE_SELF, &rbuff) != 0)
- abort ();
- utime = (float) (rbuff.ru_utime).tv_sec +
- (float) (rbuff.ru_utime).tv_usec/1000000.0;
- tarray[0] = utime - (float) old_utime;
- stime = (float) (rbuff.ru_stime).tv_sec +
- (float) (rbuff.ru_stime).tv_usec/1000000.0;
- tarray[1] = stime - old_stime;
-#else /* HAVE_GETRUSAGE */
- time_t utime, stime;
- static time_t old_utime = 0, old_stime = 0;
- struct tms buffer;
-
-/* NeXTStep seems to define _SC_CLK_TCK but not to have sysconf;
- fixme: does using _POSIX_VERSION help? */
-# if defined _SC_CLK_TCK && defined _POSIX_VERSION
- if (! clk_tck) clk_tck = sysconf(_SC_CLK_TCK);
-# elif defined CLOCKS_PER_SECOND
- if (! clk_tck) clk_tck = CLOCKS_PER_SECOND;
-# elif defined CLK_TCK
- if (! clk_tck) clk_tck = CLK_TCK;
-# elif defined HZ
- if (! clk_tck) clk_tck = HZ;
-# elif defined HAVE_GETRUSAGE
-# else
- #error Dont know clock tick length
-# endif
- if (times(&buffer) == (clock_t)-1) return -1.0;
- utime = buffer.tms_utime; stime = buffer.tms_stime;
- tarray[0] = ((float)(utime - old_utime)) / (float)clk_tck;
- tarray[1] = ((float)(stime - old_stime)) / (float)clk_tck;
-#endif /* HAVE_GETRUSAGE */
- old_utime = utime; old_stime = stime;
- return (tarray[0]+tarray[1]);
-#else /* ! HAVE_GETRUSAGE && ! HAVE_TIMES */
- errno = ENOSYS;
- return 0.0;
-#endif /* ! HAVE_GETRUSAGE && ! HAVE_TIMES */
-}