diff options
Diffstat (limited to 'sysdeps/unix/bsd/clock.c')
-rw-r--r-- | sysdeps/unix/bsd/clock.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/sysdeps/unix/bsd/clock.c b/sysdeps/unix/bsd/clock.c new file mode 100644 index 0000000..2c3e028 --- /dev/null +++ b/sysdeps/unix/bsd/clock.c @@ -0,0 +1,45 @@ +/* Copyright (C) 1991 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C 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. + +The GNU C Library 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 the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <sys/resource.h> +#include <time.h> +#include <sys/time.h> + +#ifdef __GNUC__ +__inline +#endif +static clock_t +DEFUN(timeval_to_clock_t, (tv), CONST struct timeval *tv) +{ + return (clock_t) ((tv->tv_sec * CLK_TCK) + + (tv->tv_usec * CLK_TCK / 1000)); +} + +/* Return the time used by the program so far (user time + system time). */ +clock_t +DEFUN_VOID(clock) +{ + struct rusage usage; + + if (__getrusage(RUSAGE_SELF, &usage) < 0) + return (clock_t) -1; + + return (timeval_to_clock_t(&usage.ru_stime) + + timeval_to_clock_t(&usage.ru_utime)) * CLOCKS_PER_SEC; +} |