/* times.c - times(3) library function */ /* Copyright (C) 1999 Free Software Foundation, Inc. This file is part of GNU Bash, the Bourne Again SHell. Bash 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 3 of the License, or (at your option) any later version. Bash 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 Bash. If not, see . */ #include #if !defined (HAVE_TIMES) #include #include #include #if defined (HAVE_SYS_RESOURCE_H) && defined (HAVE_GETRUSAGE) # include #endif /* HAVE_SYS_RESOURCE_H && HAVE_GETRUSAGE */ extern long get_clk_tck __P((void)); #define CONVTCK(r) (r.tv_sec * clk_tck + r.tv_usec / (1000000 / clk_tck)) clock_t times(tms) struct tms *tms; { clock_t rv; static long clk_tck = -1; #if defined (HAVE_GETRUSAGE) struct timeval tv; struct rusage ru; if (clk_tck == -1) clk_tck = get_clk_tck(); if (getrusage(RUSAGE_SELF, &ru) < 0) return ((clock_t)-1); tms->tms_utime = CONVTCK(ru.ru_utime); tms->tms_stime = CONVTCK(ru.ru_stime); if (getrusage(RUSAGE_CHILDREN, &ru) < 0) return ((clock_t)-1); tms->tms_cutime = CONVTCK(ru.ru_utime); tms->tms_cstime = CONVTCK(ru.ru_stime); if (gettimeofday(&tv, (struct timezone *) 0) < 0) return ((clock_t)-1); rv = (clock_t)(CONVTCK(tv)); #else /* !HAVE_GETRUSAGE */ if (clk_tck == -1) clk_tck = get_clk_tck(); /* We can't do anything. */ tms->tms_utime = tms->tms_stime = (clock_t)0; tms->tms_cutime = tms->tms_cstime = (clock_t)0; rv = (clock_t)time((time_t *)0) * clk_tck; # endif /* HAVE_GETRUSAGE */ return rv; } #endif /* !HAVE_TIMES */
