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701666b77d
void **. * nss/nsswitch.h (service_user): Use void * type for KNOWN field. * nss/nss_files/files-hosts.c (LINE_PARSER): Cast host_addr to char * to avoid warning. * nis/nss_nis/nis-hosts.c (LINE_PARSER): Likewise. * timezone/Makefile (CFLAGS-zdump.c): Add -fwrapv. * locale/programs/ld-ctype.c (ctype_finish, set_class_defaults, allocate_arrays): Cast second argument to charmap_find_symbol to char * to avoid warnings. * locale/programs/repertoire.c (repertoire_new_char): Change from_nr, to_nr and cnt to unsigned long, adjust printf format string. * locale/programs/ld-collate.c (insert_value, handle_ellipsis): Cast second argument to new_element to char * to avoid warnings. * locale/weightwc.h (findidx): Cast &extra[-i] to const int32_t *. * intl/gettextP.h (struct loaded_domain): Change plural to const struct expression *. * intl/plural-eval.c (plural_eval): Change first argument to const struct expression *. * intl/plural-exp.c (EXTRACT_PLURAL_EXPRESSION): Change first argument to const struct expression **. * intl/plural-exp.h (EXTRACT_PLURAL_EXPRESSION, plural_eval): Adjust prototypes. * intl/loadmsgcat (_nl_unload_domain): Cast away const in call to __gettext_free_exp. * posix/fnmatch.c (fnmatch): Rearrange code to avoid maybe unitialized wstring/wpattern var warnings. * posix/runtests.c (struct a_test): Make data field const char *. * stdio-common/tst-sprintf2.c (main): Don't declere u, v and buf vars if not LDBL_MANT_DIG >= 106. * stdio-common/Makefile (CFLAGS-vfwprintf.c): Add -Wno-unitialized. * stdio-common/vfprintf.c (vfprintf): Cast first arugment to __find_specmb to avoid warning. * rt/tst-mqueue1.c (do_one_test): Add casts to avoid warnings. * debug/test-strcpy_chk.c (do_tests, do_random_tests): Add casts to avoid warnings. * sysdeps/ieee754/ldbl-96/s_roundl.c (huge): Add L suffix to initializer. * sysdeps/unix/clock_gettime.c (clock_gettime): Only define tv var when it will be actually used. * sunrpc/rpc_cmsg.c (xdr_callmsg): Cast IXDR_PUT_* to void to avoid warnings.
137 lines
3.6 KiB
C
137 lines
3.6 KiB
C
/* clock_gettime -- Get the current time from a POSIX clockid_t. Unix version.
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Copyright (C) 1999-2004, 2005, 2007 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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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 <sys/time.h>
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#include <libc-internal.h>
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#include <ldsodefs.h>
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#if HP_TIMING_AVAIL
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/* Clock frequency of the processor. We make it a 64-bit variable
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because some jokers are already playing with processors with more
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than 4GHz. */
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static hp_timing_t freq;
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/* This function is defined in the thread library. */
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extern int __pthread_clock_gettime (clockid_t clock_id, hp_timing_t freq,
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struct timespec *tp)
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__attribute__ ((__weak__));
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static int
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hp_timing_gettime (clockid_t clock_id, struct timespec *tp)
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{
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hp_timing_t tsc;
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if (__builtin_expect (freq == 0, 0))
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{
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/* This can only happen if we haven't initialized the `freq'
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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 (__builtin_expect (freq == 0, 0))
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/* Something went wrong. */
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return -1;
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}
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if (clock_id != CLOCK_PROCESS_CPUTIME_ID
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&& __pthread_clock_gettime != NULL)
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return __pthread_clock_gettime (clock_id, freq, tp);
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/* Get the current counter. */
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HP_TIMING_NOW (tsc);
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/* Compute the offset since the start time of the process. */
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tsc -= GL(dl_cpuclock_offset);
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/* Compute the seconds. */
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tp->tv_sec = tsc / freq;
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/* And the nanoseconds. This computation should be stable until
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we get machines with about 16GHz frequency. */
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tp->tv_nsec = ((tsc % freq) * UINT64_C (1000000000)) / freq;
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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_gettime (struct timespec *tp)
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{
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struct timeval tv;
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int retval = gettimeofday (&tv, NULL);
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if (retval == 0)
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/* Convert into `timespec'. */
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TIMEVAL_TO_TIMESPEC (&tv, tp);
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return retval;
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}
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/* Get current value of CLOCK and store it in TP. */
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int
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clock_gettime (clockid_t clock_id, struct timespec *tp)
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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_GETTIME
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SYSDEP_GETTIME;
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#endif
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#ifndef HANDLED_REALTIME
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case CLOCK_REALTIME:
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{
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struct timeval tv;
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retval = gettimeofday (&tv, NULL);
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if (retval == 0)
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TIMEVAL_TO_TIMESPEC (&tv, tp);
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}
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break;
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#endif
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default:
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#ifdef SYSDEP_GETTIME_CPU
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SYSDEP_GETTIME_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_gettime (clock_id, tp);
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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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retval = hp_timing_gettime (clock_id, tp);
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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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librt_hidden_def (clock_gettime)
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