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Diffstat (limited to 'libiberty/clock.c')
| -rw-r--r-- | libiberty/clock.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/libiberty/clock.c b/libiberty/clock.c new file mode 100644 index 00000000000..db2509c17f2 --- /dev/null +++ b/libiberty/clock.c @@ -0,0 +1,91 @@ +/* ANSI-compatible clock function. + Copyright (C) 1994, 1995, 1999 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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. */ + +#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 () +{ +#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 */ +} + |