diff options
Diffstat (limited to 'newlib/libc/sys/linux/clock_gettime.c')
| -rw-r--r-- | newlib/libc/sys/linux/clock_gettime.c | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/newlib/libc/sys/linux/clock_gettime.c b/newlib/libc/sys/linux/clock_gettime.c deleted file mode 100644 index a86786bb2..000000000 --- a/newlib/libc/sys/linux/clock_gettime.c +++ /dev/null @@ -1,109 +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 <sys/time.h> -#include <libc-internal.h> -#include <hp-timing.h> - - -#if HP_TIMING_AVAIL -/* Clock frequency of the processor. We make it a 64-bit variable - because some jokers are already playing with processors with more - than 4GHz. */ -static hp_timing_t freq; - - -/* We need the starting time for the process. */ -extern hp_timing_t _dl_cpuclock_offset; - - -/* This function is defined in the thread library. */ -extern int __pthread_clock_gettime (hp_timing_t freq, struct timespec *tp) - __attribute__ ((__weak__)); -#endif - - -/* Get current value of CLOCK and store it in TP. */ -int -clock_gettime (clockid_t clock_id, struct timespec *tp) -{ - struct timeval tv; - int retval = -1; - - switch (clock_id) - { - case CLOCK_REALTIME: - retval = gettimeofday (&tv, NULL); - if (retval == 0) - /* Convert into `timespec'. */ - TIMEVAL_TO_TIMESPEC (&tv, tp); - break; - -#if HP_TIMING_AVAIL - case CLOCK_PROCESS_CPUTIME_ID: - case CLOCK_THREAD_CPUTIME_ID: - { - hp_timing_t tsc; - - if (__builtin_expect (freq == 0, 0)) - { - /* 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; - } - - if (clock_id == CLOCK_THREAD_CPUTIME_ID - && __pthread_clock_gettime != NULL) - { - retval = __pthread_clock_gettime (freq, tp); - break; - } - - /* Get the current counter. */ - HP_TIMING_NOW (tsc); - - /* Compute the offset since the start time of the process. */ - tsc -= _dl_cpuclock_offset; - - /* Compute the seconds. */ - tp->tv_sec = tsc / freq; - - /* And the nanoseconds. This computation should be stable until - we get machines with about 16GHz frequency. */ - tp->tv_nsec = ((tsc % freq) * UINT64_C (1000000000)) / freq; - - retval = 0; - } - break; -#endif - - default: - __set_errno (EINVAL); - break; - } - - return retval; -} |