198b9484cSchristos /* ANSI-compatible clock function. 2*5173eb0aSchristos Copyright (C) 1994-2024 Free Software Foundation, Inc. 398b9484cSchristos 498b9484cSchristos This file is part of the libiberty library. This library is free 598b9484cSchristos software; you can redistribute it and/or modify it under the 698b9484cSchristos terms of the GNU General Public License as published by the 798b9484cSchristos Free Software Foundation; either version 2, or (at your option) 898b9484cSchristos any later version. 998b9484cSchristos 1098b9484cSchristos This library is distributed in the hope that it will be useful, 1198b9484cSchristos but WITHOUT ANY WARRANTY; without even the implied warranty of 1298b9484cSchristos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1398b9484cSchristos GNU General Public License for more details. 1498b9484cSchristos 1598b9484cSchristos You should have received a copy of the GNU General Public License 1698b9484cSchristos along with GNU CC; see the file COPYING. If not, write to 1798b9484cSchristos the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. 1898b9484cSchristos 1998b9484cSchristos As a special exception, if you link this library with files 2098b9484cSchristos compiled with a GNU compiler to produce an executable, this does not cause 2198b9484cSchristos the resulting executable to be covered by the GNU General Public License. 2298b9484cSchristos This exception does not however invalidate any other reasons why 2398b9484cSchristos the executable file might be covered by the GNU General Public License. */ 2498b9484cSchristos 2598b9484cSchristos /* 2698b9484cSchristos 2798b9484cSchristos @deftypefn Supplemental long clock (void) 2898b9484cSchristos 2998b9484cSchristos Returns an approximation of the CPU time used by the process as a 3098b9484cSchristos @code{clock_t}; divide this number by @samp{CLOCKS_PER_SEC} to get the 3198b9484cSchristos number of seconds used. 3298b9484cSchristos 3398b9484cSchristos @end deftypefn 3498b9484cSchristos 3598b9484cSchristos */ 3698b9484cSchristos 3798b9484cSchristos #include "config.h" 3898b9484cSchristos 3998b9484cSchristos #ifdef HAVE_GETRUSAGE 4098b9484cSchristos #include <sys/time.h> 4198b9484cSchristos #include <sys/resource.h> 4298b9484cSchristos #endif 4398b9484cSchristos 4498b9484cSchristos #ifdef HAVE_TIMES 4598b9484cSchristos #ifdef HAVE_SYS_PARAM_H 4698b9484cSchristos #include <sys/param.h> 4798b9484cSchristos #endif 4898b9484cSchristos #include <sys/times.h> 4998b9484cSchristos #endif 5098b9484cSchristos 5198b9484cSchristos #ifdef HAVE_UNISTD_H 5298b9484cSchristos #include <unistd.h> 5398b9484cSchristos #endif 5498b9484cSchristos 5598b9484cSchristos #ifdef _SC_CLK_TCK 5698b9484cSchristos #define GNU_HZ sysconf(_SC_CLK_TCK) 5798b9484cSchristos #else 5898b9484cSchristos #ifdef HZ 5998b9484cSchristos #define GNU_HZ HZ 6098b9484cSchristos #else 6198b9484cSchristos #ifdef CLOCKS_PER_SEC 6298b9484cSchristos #define GNU_HZ CLOCKS_PER_SEC 6398b9484cSchristos #endif 6498b9484cSchristos #endif 6598b9484cSchristos #endif 6698b9484cSchristos 6798b9484cSchristos /* FIXME: should be able to declare as clock_t. */ 6898b9484cSchristos 6998b9484cSchristos long 7098b9484cSchristos clock (void) 7198b9484cSchristos { 7298b9484cSchristos #ifdef HAVE_GETRUSAGE 7398b9484cSchristos struct rusage rusage; 7498b9484cSchristos 7598b9484cSchristos getrusage (0, &rusage); 7698b9484cSchristos return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec 7798b9484cSchristos + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec); 7898b9484cSchristos #else 7998b9484cSchristos #ifdef HAVE_TIMES 8098b9484cSchristos struct tms tms; 8198b9484cSchristos 8298b9484cSchristos times (&tms); 8398b9484cSchristos return (tms.tms_utime + tms.tms_stime) * (1000000 / GNU_HZ); 8498b9484cSchristos #else 8598b9484cSchristos #ifdef VMS 8698b9484cSchristos struct 8798b9484cSchristos { 8898b9484cSchristos int proc_user_time; 8998b9484cSchristos int proc_system_time; 9098b9484cSchristos int child_user_time; 9198b9484cSchristos int child_system_time; 9298b9484cSchristos } vms_times; 9398b9484cSchristos 9498b9484cSchristos times (&vms_times); 9598b9484cSchristos return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000; 9698b9484cSchristos #else 9798b9484cSchristos /* A fallback, if nothing else available. */ 9898b9484cSchristos return 0; 9998b9484cSchristos #endif /* VMS */ 10098b9484cSchristos #endif /* HAVE_TIMES */ 10198b9484cSchristos #endif /* HAVE_GETRUSAGE */ 10298b9484cSchristos } 10398b9484cSchristos 104