diff options
Diffstat (limited to 'newlib/libc/sys/linux/clock_getres.c')
-rw-r--r-- | newlib/libc/sys/linux/clock_getres.c | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/newlib/libc/sys/linux/clock_getres.c b/newlib/libc/sys/linux/clock_getres.c deleted file mode 100644 index 8bf648f51..000000000 --- a/newlib/libc/sys/linux/clock_getres.c +++ /dev/null @@ -1,94 +0,0 @@ -/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <errno.h> -#include <stdint.h> -#include <time.h> -#include <unistd.h> -#include <sys/param.h> -#include <libc-internal.h> - - -#if HP_TIMING_AVAIL -/* Clock frequency of the processor. */ -static long int nsec; -#endif - - -/* Get resolution of clock. */ -int -clock_getres (clockid_t clock_id, struct timespec *res) -{ - int retval = -1; - - switch (clock_id) - { - case CLOCK_REALTIME: - { - long int clk_tck = sysconf (_SC_CLK_TCK); - - if (__builtin_expect (clk_tck != -1, 1)) - { - /* This implementation assumes that the realtime clock has a - resolution higher than 1 second. This is the case for any - reasonable implementation. */ - res->tv_sec = 0; - res->tv_nsec = 1000000000 / clk_tck; - - retval = 0; - } - } - break; - -#if HP_TIMING_AVAIL - case CLOCK_PROCESS_CPUTIME_ID: - case CLOCK_THREAD_CPUTIME_ID: - { - if (__builtin_expect (nsec == 0, 0)) - { - hp_timing_t freq; - - /* This can only happen if we haven't initialized the `freq' - variable yet. Do this now. We don't have to protect this - code against multiple execution since all of them should - lead to the same result. */ - freq = __get_clockfreq (); - if (__builtin_expect (freq == 0, 0)) - /* Something went wrong. */ - break; - - nsec = MAX (UINT64_C (1000000000) / freq, 1); - } - - /* File in the values. The seconds are always zero (unless we - have a 1Hz machine). */ - res->tv_sec = 0; - res->tv_nsec = nsec; - - retval = 0; - } - break; -#endif - - default: - __set_errno (EINVAL); - break; - } - - return retval; -} |