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dba2bdbe75
* hurd/hurdauth.c (_S_msg_add_auth): Call __vm_allocate and __vm_deallocate instead of vm_allocate and vm_deallocate. * hurd/hurdmsg.c (_S_msg_set_env_variable): Call __setenv instead of setenv. * hurd/hurdprio.c (_hurd_priority_which_map): Call __geteuid instead of geteuid. * hurd/path-lookup.c (file_name_path_scan): Call __strdup instead of strdup. * hurd/siginfo.c: Include <libioP.h>. (_hurd_siginfo_handler): Call _IO_puts instead of puts. * hurd/xattr.c (_hurd_xattr_get, _hurd_xattr_set): Call __munmap instead of munmap. * io/fts.c (fts_build): Call __dirfd instead of dirfd. * mach/devstream.c: Include <libioP.h>. (dealloc_ref): Call __mach_port_deallocate instead of mach_port_deallocate. (mach_open_devstream): Call _IO_fopencookie instead of fopencookie. Call __mach_port_deallocate instead of mach_port_deallocate. * stdlib/canonicalize.c (__realpath): Call __pathconf instead of pathconf. * sysdeps/mach/hurd/ifreq.c (__ifreq): Call __munmap instead of munmap. * sysdeps/mach/hurd/ifreq.h (__if_freereq): Likewise. * sysdeps/mach/hurd/ptrace.c (ptrace): Call __kill instead of kill. * sysdeps/mach/hurd/sendfile64.c (sendfile64): Call __munmap instead of munmap. * sysdeps/mach/hurd/socketpair.c (__socketpair): Call __close instead of close. * sysdeps/posix/clock_getres.c (realtime_getres): Call __sysconf instead of sysconf. * sysdeps/pthread/timer_gettime.c (timer_gettime): Call __clock_gettime instead of clock_gettime. * sysdeps/pthread/timer_routines.c (thread_func): Likewise. * sysdeps/pthread/timer_settime.c (timer_settime): Likewise. * sysdeps/unix/bsd/gtty.c (gtty): Call __ioctl instead of ioctl. * sysdeps/unix/bsd/stty.c (stty): Likewise. * sysdeps/unix/bsd/tcflow.c (tcflow): Call __tcgetattr instead of tcgetattr. * sysdeps/unix/clock_nanosleep.c (__clock_nanosleep): Call __clock_gettime and __nanosleep instead of clock_gettime and nanosleep.
119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/* clock_getres -- Get the resolution of a POSIX clockid_t.
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Copyright (C) 1999-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <stdint.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include <libc-internal.h>
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#if HP_TIMING_AVAIL
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static long int nsec; /* Clock frequency of the processor. */
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static int
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hp_timing_getres (struct timespec *res)
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{
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if (__glibc_unlikely (nsec == 0))
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{
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hp_timing_t freq;
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/* This can only happen if we haven't initialized the `nsec'
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variable yet. Do this now. We don't have to protect this
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code against multiple execution since all of them should
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lead to the same result. */
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freq = __get_clockfreq ();
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if (__glibc_unlikely (freq == 0))
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/* Something went wrong. */
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return -1;
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nsec = MAX (UINT64_C (1000000000) / freq, 1);
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}
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/* Fill in the values.
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The seconds are always zero (unless we have a 1Hz machine). */
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res->tv_sec = 0;
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res->tv_nsec = nsec;
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return 0;
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}
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#endif
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static inline int
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realtime_getres (struct timespec *res)
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{
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long int clk_tck = __sysconf (_SC_CLK_TCK);
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if (__glibc_likely (clk_tck != -1))
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{
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/* This implementation assumes that the realtime clock has a
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resolution higher than 1 second. This is the case for any
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reasonable implementation. */
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res->tv_sec = 0;
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res->tv_nsec = 1000000000 / clk_tck;
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return 0;
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}
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return -1;
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}
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/* Get resolution of clock. */
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int
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__clock_getres (clockid_t clock_id, struct timespec *res)
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{
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int retval = -1;
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switch (clock_id)
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{
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#ifdef SYSDEP_GETRES
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SYSDEP_GETRES;
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#endif
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#ifndef HANDLED_REALTIME
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case CLOCK_REALTIME:
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retval = realtime_getres (res);
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break;
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#endif /* handled REALTIME */
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default:
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#ifdef SYSDEP_GETRES_CPU
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SYSDEP_GETRES_CPU;
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#endif
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#if HP_TIMING_AVAIL
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if ((clock_id & ((1 << CLOCK_IDFIELD_SIZE) - 1))
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== CLOCK_THREAD_CPUTIME_ID)
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retval = hp_timing_getres (res);
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else
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#endif
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__set_errno (EINVAL);
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break;
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#if HP_TIMING_AVAIL && !defined HANDLED_CPUTIME
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case CLOCK_PROCESS_CPUTIME_ID:
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case CLOCK_THREAD_CPUTIME_ID:
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retval = hp_timing_getres (res);
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break;
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#endif
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}
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return retval;
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}
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weak_alias (__clock_getres, clock_getres)
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