mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/* ANSI-compatible clock function.
|
|
Copyright (C) 1994-2021 Free Software Foundation, Inc.
|
|
|
|
This file is part of the libiberty library. This library is free
|
|
software; you can redistribute it and/or modify it under the
|
|
terms of the GNU General Public License as published by the
|
|
Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
This 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU CC; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
As a special exception, if you link this library with files
|
|
compiled with a GNU compiler to produce an executable, this does not cause
|
|
the resulting executable to be covered by the GNU General Public License.
|
|
This exception does not however invalidate any other reasons why
|
|
the executable file might be covered by the GNU General Public License. */
|
|
|
|
/*
|
|
|
|
@deftypefn Supplemental long clock (void)
|
|
|
|
Returns an approximation of the CPU time used by the process as a
|
|
@code{clock_t}; divide this number by @samp{CLOCKS_PER_SEC} to get the
|
|
number of seconds used.
|
|
|
|
@end deftypefn
|
|
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#ifdef HAVE_GETRUSAGE
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_TIMES
|
|
#ifdef HAVE_SYS_PARAM_H
|
|
#include <sys/param.h>
|
|
#endif
|
|
#include <sys/times.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#ifdef _SC_CLK_TCK
|
|
#define GNU_HZ sysconf(_SC_CLK_TCK)
|
|
#else
|
|
#ifdef HZ
|
|
#define GNU_HZ HZ
|
|
#else
|
|
#ifdef CLOCKS_PER_SEC
|
|
#define GNU_HZ CLOCKS_PER_SEC
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
/* FIXME: should be able to declare as clock_t. */
|
|
|
|
long
|
|
clock (void)
|
|
{
|
|
#ifdef HAVE_GETRUSAGE
|
|
struct rusage rusage;
|
|
|
|
getrusage (0, &rusage);
|
|
return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec
|
|
+ rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec);
|
|
#else
|
|
#ifdef HAVE_TIMES
|
|
struct tms tms;
|
|
|
|
times (&tms);
|
|
return (tms.tms_utime + tms.tms_stime) * (1000000 / GNU_HZ);
|
|
#else
|
|
#ifdef VMS
|
|
struct
|
|
{
|
|
int proc_user_time;
|
|
int proc_system_time;
|
|
int child_user_time;
|
|
int child_system_time;
|
|
} vms_times;
|
|
|
|
times (&vms_times);
|
|
return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000;
|
|
#else
|
|
/* A fallback, if nothing else available. */
|
|
return 0;
|
|
#endif /* VMS */
|
|
#endif /* HAVE_TIMES */
|
|
#endif /* HAVE_GETRUSAGE */
|
|
}
|
|
|