From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libiberty/getruntime.c | 116 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 libiberty/getruntime.c (limited to 'libiberty/getruntime.c') diff --git a/libiberty/getruntime.c b/libiberty/getruntime.c new file mode 100644 index 000000000..82f3d2e41 --- /dev/null +++ b/libiberty/getruntime.c @@ -0,0 +1,116 @@ +/* Return time used so far, in microseconds. + Copyright (C) 1994, 1999, 2002 Free Software Foundation, Inc. + +This file is part of the libiberty library. +Libiberty 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. + +Libiberty 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 libiberty; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, +Boston, MA 02110-1301, USA. */ + +#include "config.h" + +#include "ansidecl.h" +#include "libiberty.h" + +/* On some systems (such as WindISS), you must include + to get the definition of "time_t" before you include . */ +#include + +/* There are several ways to get elapsed execution time; unfortunately no + single way is available for all host systems, nor are there reliable + ways to find out which way is correct for a given host. */ + +#ifdef TIME_WITH_SYS_TIME +# include +# include +#else +# if HAVE_SYS_TIME_H +# include +# else +# ifdef HAVE_TIME_H +# include +# endif +# endif +#endif + +#if defined (HAVE_GETRUSAGE) && defined (HAVE_SYS_RESOURCE_H) +#include +#endif + +#ifdef HAVE_TIMES +#ifdef HAVE_SYS_PARAM_H +#include +#endif +#include +#endif + +#ifdef HAVE_UNISTD_H +#include +#endif + +/* This is a fallback; if wrong, it will likely make obviously wrong + results. */ + +#ifndef CLOCKS_PER_SEC +#define CLOCKS_PER_SEC 1 +#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 + +/* + +@deftypefn Replacement long get_run_time (void) + +Returns the time used so far, in microseconds. If possible, this is +the time used by this process, else it is the elapsed time since the +process started. + +@end deftypefn + +*/ + +long +get_run_time (void) +{ +#if defined (HAVE_GETRUSAGE) && defined (HAVE_SYS_RESOURCE_H) + 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 /* ! HAVE_GETRUSAGE */ +#ifdef HAVE_TIMES + struct tms tms; + + times (&tms); + return (tms.tms_utime + tms.tms_stime) * (1000000 / GNU_HZ); +#else /* ! HAVE_TIMES */ + /* Fall back on clock and hope it's correctly implemented. */ + const long clocks_per_sec = CLOCKS_PER_SEC; + if (clocks_per_sec <= 1000000) + return clock () * (1000000 / clocks_per_sec); + else + return clock () / clocks_per_sec; +#endif /* HAVE_TIMES */ +#endif /* HAVE_GETRUSAGE */ +} -- cgit v1.2.3