You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
1.7 KiB
49 lines
1.7 KiB
dnl -*- Autoconf -*-
|
|
dnl Copyright (C) 1993-2006 Free Software Foundation, Inc.
|
|
dnl This file is free software, distributed under the terms of the GNU
|
|
dnl General Public License. As a special exception to the GNU General
|
|
dnl Public License, this file may be distributed as part of a program
|
|
dnl that contains a configuration script generated by Autoconf, under
|
|
dnl the same distribution terms as the rest of that program.
|
|
|
|
dnl From Bruno Haible, Marcus Daniels, Sam Steingold.
|
|
|
|
AC_PREREQ(2.57)
|
|
|
|
AC_DEFUN([CL_TIMES_CLOCK],
|
|
[AC_REQUIRE([CL_GETTIMEOFDAY])dnl
|
|
if test $ac_cv_func_gettimeofday = no -a $ac_cv_func_ftime = no; then
|
|
AC_CHECK_FUNC(times, , no_times=1)dnl
|
|
if test -z "$no_times"; then
|
|
AC_CACHE_CHECK(for times return value, cl_cv_func_times_return, [
|
|
AC_TRY_RUN([
|
|
#include <stdlib.h> /* needed for exit() */
|
|
#include <sys/types.h>
|
|
#include <time.h> /* needed for CLK_TCK */
|
|
#ifndef CLK_TCK
|
|
#include <sys/time.h> /* needed for CLK_TCK on SYSV PTX */
|
|
#endif
|
|
#include <sys/times.h>
|
|
int main ()
|
|
{ struct tms buffer;
|
|
clock_t result1;
|
|
clock_t result2;
|
|
int ticks;
|
|
result1 = times(&buffer);
|
|
if ((result1 == (clock_t)0) || (result1 == (clock_t)(-1))) exit(1);
|
|
sleep(1);
|
|
result2 = times(&buffer);
|
|
if ((result2 == (clock_t)0) || (result2 == (clock_t)(-1))) exit(1);
|
|
ticks = result2 - result1;
|
|
exit(!((ticks >= CLK_TCK/2) && (ticks <= 3*CLK_TCK/2)));
|
|
}], cl_cv_func_times_return=yes, cl_cv_func_times_return=no,
|
|
dnl When cross-compiling, don't assume anything.
|
|
cl_cv_func_times_return="guessing no")
|
|
])
|
|
case "$cl_cv_func_times_return" in
|
|
*yes) AC_DEFINE(HAVE_TIMES_CLOCK,,[have the times() function and it returns the real time, but do not have the gettimeofday() or ftime() function]) ;;
|
|
*no) ;;
|
|
esac
|
|
fi
|
|
fi
|
|
])
|