diff options
32 files changed, 578 insertions, 398 deletions
diff --git a/ChangeLog b/ChangeLog index 2bd3112792..8c68f5a416 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,41 @@ 2001-04-23 Ulrich Drepper <drepper@redhat.com> + * sysdeps/unix/i386/i586/clock_getres.c: Removed. + * sysdeps/unix/i386/i586/clock_gettime.c: Removed. + * sysdeps/unix/i386/i586/clock_nanosleep.c: Removed. + * sysdeps/unix/i386/i586/clock_settime.c: Removed. + * sysdeps/unix/i386/i586/cpuclock-init.h: Removed. + * sysdeps/generic/cpuclock-init.h: Removed. + * sysdeps/unix/i386/i686/Implies: Removed. + * sysdeps/unix/i386/i686/tempname.c: Removed. + * sysdeps/i386/i686/Versions: New file. + * sysdeps/unix/i386/i586/Versions: Removed. + + * sysdeps/posix/clock_getres.c: If HP_TIMING_AVAIL is nonzero handle + CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID. + * sysdeps/unix/clock_gettime.c: Likewise. + * sysdeps/unix/clock_nanosleep.c: Likewise. + * sysdeps/unix/clock_settime.c: Likewise. + * sysdeps/posix/tempname.c: Is HP_TIMING_AVAIL is nonzero define + RANDOM_BITS use CPU clock. + + * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/bits/time.h: New file. + * sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9b/bits/time.h: New file. + * sysdeps/unix/sysv/linux/sparc/sparc64/bits/time.h: New file. + * sysdeps/sparc/Versions: New file. + + * elf/dl-support.c: Don't use cpuclock-init.h definitions, use + hp-timing.h definitions. + * sysdeps/generic/dl-sysdep.c: Likewise. + + * include/libc-internal.h: Include hp-timing.h. Use hp_timing_t in + __get_clockfreq prototype. + + * sysdeps/unix/sysv/linux/i386/get_clockfreq.c (__get_clockfreq): + Use hp_timing_t type. + + * sysdeps/unix/sysv/linux/ia64/get_clockfreq.c: New file. + * sysdeps/posix/pathconf.c (__pathconf): For _PC_ASYNC_IO test whether named file is a regular file or a block device. * sysdeps/posix/fpathconf.c (__fpathconf): Likewise. diff --git a/elf/dl-support.c b/elf/dl-support.c index fa1b1874e7..2d0c318254 100644 --- a/elf/dl-support.c +++ b/elf/dl-support.c @@ -29,7 +29,7 @@ #include <bits/libc-lock.h> #include <dl-librecon.h> #include <unsecvars.h> -#include <cpuclock-init.h> +#include <hp-timing.h> extern char *__progname; char **_dl_argv = &__progname; /* This is checked for some error messages. */ @@ -94,8 +94,8 @@ struct r_scope_elem *_dl_main_searchlist = &_dl_initial_searchlist; int _dl_starting_up = 1; /* Initial value of the CPU clock. */ -#ifdef CPUCLOCK_VARDEF -CPUCLOCK_VARDEF (_dl_cpuclock_offset); +#if HP_TIMING_AVAIL +hp_timing_t _dl_cpuclock_offset; #endif /* During the program run we must not modify the global data of @@ -133,8 +133,8 @@ static void non_dynamic_init (void) __attribute__ ((unused)); static void non_dynamic_init (void) { -#ifdef CPUCLOCK_INIT - CPUCLOCK_INIT (_dl_cpuclock_offset); +#if HP_TIMING_AVAIL + HP_TIMING_NOW (_dl_cpuclock_offset); #endif if (!_dl_pagesize) diff --git a/include/libc-internal.h b/include/libc-internal.h index b7f630a807..8369ffec2e 100644 --- a/include/libc-internal.h +++ b/include/libc-internal.h @@ -4,6 +4,8 @@ #ifndef _LIBC_INTERNAL # define _LIBC_INTERNAL 1 +#include <hp-timing.h> + /* Initialize the `__libc_enable_secure' flag. */ extern void __libc_init_secure (void); @@ -19,7 +21,7 @@ extern void __cyg_profile_func_enter (void *this_fn, void *call_site); extern void __cyg_profile_func_exit (void *this_fn, void *call_site); /* Get frequency of the system processor. */ -extern unsigned long long int __get_clockfreq (void); +extern hp_timing_t __get_clockfreq (void); /* Free all allocated resources. */ extern void __libc_freeres (void); diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index 0e9c9fb73b..553219fa98 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -1,3 +1,18 @@ +2001-04-23 Ulrich Drepper <drepper@redhat.com> + + * Makefile (libpthread-routines): Add ptclock_gettime and + ptclock_settime. + * internals.h: Don't use cpuclock-init.h definitions, use + hp-timing.h definitions. + * pthread.c: Likewise. + * manager.c: Likewise. + * ptclock_gettime.c: New file. + * ptclock_settime.c: New file. + + * sysdeps/i386/i586/ptclock_gettime.c: Removed. + * sysdeps/i386/i586/ptclock_settime.c: Removed. + * sysdeps/i386/i586/Makefile: Removed. + 2001-04-22 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/bits/posix_opt.h: Define _POSIX_ASYNCH_IO. diff --git a/linuxthreads/Makefile b/linuxthreads/Makefile index d6d0a118d6..3fde2c909b 100644 --- a/linuxthreads/Makefile +++ b/linuxthreads/Makefile @@ -35,7 +35,8 @@ extra-libs-others := $(extra-libs) libpthread-routines := attr cancel condvar join manager mutex ptfork \ ptlongjmp pthread signals specific errno lockfile \ semaphore spinlock wrapsyscall rwlock pt-machine \ - oldsemaphore events getcpuclockid pspinlock barrier + oldsemaphore events getcpuclockid pspinlock barrier \ + ptclock_gettime ptclock_settime nodelete-yes = -Wl,--enable-new-dtags,-z,nodelete initfirst-yes = -Wl,--enable-new-dtags,-z,initfirst diff --git a/linuxthreads/internals.h b/linuxthreads/internals.h index 27d4789cc8..f9bb36fd46 100644 --- a/linuxthreads/internals.h +++ b/linuxthreads/internals.h @@ -33,7 +33,7 @@ extern int __compare_and_swap (long int *p, long int oldval, long int newval); #include "pt-machine.h" #include "semaphore.h" #include "../linuxthreads_db/thread_dbP.h" -#include <cpuclock-init.h> +#include <hp-timing.h> #ifndef THREAD_GETMEM # define THREAD_GETMEM(descr, member) descr->member @@ -180,8 +180,8 @@ struct _pthread_descr_struct { struct __res_state *p_resp; /* Pointer to resolver state */ struct __res_state p_res; /* per-thread resolver state */ int p_inheritsched; /* copied from the thread attribute */ -#ifdef CPUCLOCK_VARDEF - CPUCLOCK_VARDEF (p_cpuclock_offset); /* Initial CPU clock for thread. */ +#if HP_TIMING_AVAIL + hp_timing_t p_cpuclock_offset; /* Initial CPU clock for thread. */ #endif /* New elements must be added at the end. */ } __attribute__ ((aligned(32))); /* We need to align the structure so that diff --git a/linuxthreads/manager.c b/linuxthreads/manager.c index 3d24218307..d436b08f16 100644 --- a/linuxthreads/manager.c +++ b/linuxthreads/manager.c @@ -230,15 +230,15 @@ pthread_start_thread(void *arg) pthread_descr self = (pthread_descr) arg; struct pthread_request request; void * outcome; -#ifdef CPUCLOCK_VARDEF - CPUCLOCK_VARDEF (tmpclock); +#if HP_TIMING_AVAIL + hp_timing_t tmpclock; #endif /* Initialize special thread_self processing, if any. */ #ifdef INIT_THREAD_SELF INIT_THREAD_SELF(self, self->p_nr); #endif -#ifdef CPUCLOCK_INIT - CPUCLOCK_INIT (tmpclock); +#if HP_TIMING_AVAIL + HP_TIMING_NOW (tmpclock); THREAD_SETMEM (self, p_cpuclock_offset, tmpclock); #endif /* Make sure our pid field is initialized, just in case we get there diff --git a/linuxthreads/sysdeps/i386/i586/ptclock_gettime.c b/linuxthreads/ptclock_gettime.c index 818251074e..3323edbcd2 100644 --- a/linuxthreads/sysdeps/i386/i586/ptclock_gettime.c +++ b/linuxthreads/ptclock_gettime.c @@ -18,18 +18,18 @@ #include <time.h> #include <libc-internal.h> - -#include "../../../internals.h" +#include "internals.h" +#if HP_TIMING_AVAIL int -__pthread_clock_gettime (unsigned long long int freq, struct timespec *tp) +__pthread_clock_gettime (hp_timing_t freq, struct timespec *tp) { - unsigned long long int tsc; + hp_timing_t tsc; pthread_descr self = thread_self (); /* Get the current counter. */ - asm volatile ("rdtsc" : "=A" (tsc)); + HP_TIMING_NOW (tsc); /* Compute the offset since the start time of the process. */ tsc -= THREAD_GETMEM (self, p_cpuclock_offset); @@ -43,3 +43,4 @@ __pthread_clock_gettime (unsigned long long int freq, struct timespec *tp) return 0; } +#endif diff --git a/linuxthreads/sysdeps/i386/i586/ptclock_settime.c b/linuxthreads/ptclock_settime.c index 3026528cc2..e293e0dfb0 100644 --- a/linuxthreads/sysdeps/i386/i586/ptclock_settime.c +++ b/linuxthreads/ptclock_settime.c @@ -18,15 +18,16 @@ #include <time.h> #include <libc-internal.h> - -#include "../../../internals.h" +#include "internals.h" +#if HP_TIMING_AVAIL void -__pthread_clock_settime (unsigned long long int offset) +__pthread_clock_settime (hp_timing_t offset) { pthread_descr self = thread_self (); /* Compute the offset since the start time of the process. */ THREAD_SETMEM (self, p_cpuclock_offset, offset); } +#endif diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c index 73a7acb9c9..4340a7cc65 100644 --- a/linuxthreads/pthread.c +++ b/linuxthreads/pthread.c @@ -226,8 +226,8 @@ static void pthread_handle_sigrestart(int sig); static void pthread_handle_sigdebug(int sig); /* CPU clock handling. */ -#ifdef CPUCLOCK_VARDECL -CPUCLOCK_VARDECL (_dl_cpuclock_offset); +#if HP_TIMING_AVAIL +extern hp_timing_t _dl_cpuclock_offset; #endif /* Signal numbers used for the communication. @@ -395,7 +395,7 @@ __pthread_initialize_minimal(void) #ifdef INIT_THREAD_SELF INIT_THREAD_SELF(&__pthread_initial_thread, 0); #endif -#ifdef CPUCLOCK_INIT +#if HP_TIMING_AVAIL __pthread_initial_thread.p_cpuclock_offset = _dl_cpuclock_offset; #endif } diff --git a/linuxthreads/sysdeps/i386/i586/Makefile b/linuxthreads/sysdeps/i386/i586/Makefile deleted file mode 100644 index 96c195f6e5..0000000000 --- a/linuxthreads/sysdeps/i386/i586/Makefile +++ /dev/null @@ -1,3 +0,0 @@ -ifeq ($(subdir),linuxthreads) -libpthread-sysdep_routines += ptclock_gettime ptclock_settime -endif diff --git a/sysdeps/generic/cpuclock-init.h b/sysdeps/generic/cpuclock-init.h deleted file mode 100644 index 085cf179da..0000000000 --- a/sysdeps/generic/cpuclock-init.h +++ /dev/null @@ -1 +0,0 @@ -/* In general there is no CPU clock. */ diff --git a/sysdeps/generic/dl-sysdep.c b/sysdeps/generic/dl-sysdep.c index 024864f72f..114ec8be4e 100644 --- a/sysdeps/generic/dl-sysdep.c +++ b/sysdeps/generic/dl-sysdep.c @@ -35,7 +35,7 @@ #include <dl-machine.h> #include <dl-procinfo.h> #include <dl-osinfo.h> -#include <cpuclock-init.h> +#include <hp-timing.h> extern int _dl_argc; extern char **_dl_argv; @@ -61,8 +61,8 @@ int __libc_multiple_libcs = 0; /* Defining this here avoids the inclusion void *__libc_stack_end; static ElfW(auxv_t) *_dl_auxv; unsigned long int _dl_hwcap_mask = HWCAP_IMPORTANT; -#ifdef CPUCLOCK_VARDEF -CPUCLOCK_VARDEF (_dl_cpuclock_offset); +#if HP_TIMING_AVAIL +hp_timing_t _dl_cpuclock_offset; #endif #ifndef DL_FIND_ARG_COMPONENTS @@ -100,8 +100,8 @@ _dl_sysdep_start (void **start_argptr, # define set_seen(tag) seen |= M ((tag)->a_type) #endif -#ifdef CPUCLOCK_INIT - CPUCLOCK_INIT (_dl_cpuclock_offset); +#if HP_TIMING_AVAIL + HP_TIMING_NOW (_dl_cpuclock_offset); #endif DL_FIND_ARG_COMPONENTS (start_argptr, _dl_argc, _dl_argv, _environ, diff --git a/sysdeps/unix/i386/i586/Versions b/sysdeps/i386/i686/Versions index 4242ca448a..4242ca448a 100644 --- a/sysdeps/unix/i386/i586/Versions +++ b/sysdeps/i386/i686/Versions diff --git a/sysdeps/posix/clock_getres.c b/sysdeps/posix/clock_getres.c index 0d8e29b5a8..cf92a35abf 100644 --- a/sysdeps/posix/clock_getres.c +++ b/sysdeps/posix/clock_getres.c @@ -17,14 +17,19 @@ 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> -#ifndef EXTRA_CLOCK_CASES -# define EXTRA_CLOCK_CASES +#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) @@ -50,7 +55,35 @@ clock_getres (clockid_t clock_id, struct timespec *res) } break; - EXTRA_CLOCK_CASES +#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); diff --git a/sysdeps/posix/tempname.c b/sysdeps/posix/tempname.c index 088da95758..a7c125f346 100644 --- a/sysdeps/posix/tempname.c +++ b/sysdeps/posix/tempname.c @@ -107,6 +107,25 @@ # define __secure_getenv getenv #endif +#ifdef _LIBC +# include <hp-timing.h> +# if HP_TIMING_AVAIL +# define RANDOM_BITS(Var) \ + if (__builtin_expect (value == UINT64_C (0), 0)) \ + { \ + /* If this is the first time this function is used initialize \ + the variable we accumulate the value in to some somewhat \ + random value. If we'd not do this programs at startup time \ + might have a reduced set of possible names, at least on slow \ + machines. */ \ + struct timeval tv; \ + __gettimeofday (&tv, NULL); \ + value = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec; \ + } \ + HP_TIMING_NOW (Var) +# endif +#endif + /* Use the widest available unsigned type if uint64_t is not available. The algorithm below extracts a number less than 62**6 (approximately 2**35.725) from uint64_t, so ancient hosts where diff --git a/sysdeps/sparc/Versions b/sysdeps/sparc/Versions new file mode 100644 index 0000000000..778543059a --- /dev/null +++ b/sysdeps/sparc/Versions @@ -0,0 +1,6 @@ +ld { + GLIBC_2.2.3 { + # If this symbol is ever available on SPARC it was introduced in 2.2.3. + _dl_cpuclock_offset; + } +} diff --git a/sysdeps/unix/clock_gettime.c b/sysdeps/unix/clock_gettime.c index 854cb979c2..7ea75ba00f 100644 --- a/sysdeps/unix/clock_gettime.c +++ b/sysdeps/unix/clock_gettime.c @@ -17,14 +17,30 @@ 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> -#ifndef EXTRA_CLOCK_CASES -# define EXTRA_CLOCK_CASES +#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) @@ -41,7 +57,48 @@ clock_gettime (clockid_t clock_id, struct timespec *tp) TIMEVAL_TO_TIMESPEC (&tv, tp); break; - EXTRA_CLOCK_CASES +#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); diff --git a/sysdeps/unix/clock_nanosleep.c b/sysdeps/unix/clock_nanosleep.c index 0170188f06..635eec4160 100644 --- a/sysdeps/unix/clock_nanosleep.c +++ b/sysdeps/unix/clock_nanosleep.c @@ -20,9 +20,14 @@ #include <assert.h> #include <errno.h> #include <time.h> +#include <hp-timing.h> -#ifndef CLOCK_P +#if HP_TIMING_AVAIL +# define CLOCK_P(clock) \ + (clock) != CLOCK_PROCESS_CPUTIME_ID \ + && (clock) != CLOCK_THREAD_CPUTIME_ID +#else # define CLOCK_P(clock) 0 #endif diff --git a/sysdeps/unix/clock_settime.c b/sysdeps/unix/clock_settime.c index 9155d4607d..69d6802b38 100644 --- a/sysdeps/unix/clock_settime.c +++ b/sysdeps/unix/clock_settime.c @@ -19,12 +19,26 @@ #include <errno.h> #include <time.h> #include <sys/time.h> +#include <libc-internal.h> -#ifndef EXTRA_CLOCK_CASES -# define EXTRA_CLOCK_CASES +#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 void __pthread_clock_settime (hp_timing_t offset) + __attribute__ ((__weak__)); #endif + /* Set CLOCK to value TP. */ int clock_settime (clockid_t clock_id, const struct timespec *tp) @@ -47,7 +61,45 @@ clock_settime (clockid_t clock_id, const struct timespec *tp) retval = settimeofday (&tv, NULL); break; - EXTRA_CLOCK_CASES +#if HP_TIMING_AVAIL + case CLOCK_PROCESS_CPUTIME_ID: + case CLOCK_THREAD_CPUTIME_ID: + { + hp_timing_t tsc; + hp_timing_t usertime; + + /* First thing is to get the current time. */ + HP_TIMING_NOW (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. */ + retval = -1; + break; + } + } + + /* Convert the user-provided time into CPU ticks. */ + usertime = tp->tv_sec * freq + (tp->tv_nsec * freq) / 1000000000ull; + + /* Determine the offset and use it as the new base value. */ + if (clock_id != CLOCK_THREAD_CPUTIME_ID + || __pthread_clock_settime == NULL) + _dl_cpuclock_offset = tsc - usertime; + else + __pthread_clock_settime (tsc - usertime); + + retval = 0; + } + break; +#endif default: __set_errno (EINVAL); diff --git a/sysdeps/unix/i386/i586/clock_getres.c b/sysdeps/unix/i386/i586/clock_getres.c deleted file mode 100644 index d11d0464af..0000000000 --- a/sysdeps/unix/i386/i586/clock_getres.c +++ /dev/null @@ -1,72 +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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <time.h> -#include <sys/param.h> -#include <libc-internal.h> - -/* This implementation uses the TSC register in modern (i586 and up) IA-32 - processors (most modern clones also provide it). Since we need the - resolution of the clock and since determining this is not cheap, we - cache the value. But this means that systems with processors running - at different speeds or process migration to machines with slower or - faster processors will not work without changes. */ - - -/* Clock frequency of the processor. */ -static long int nsec; - - -/* We add an limitation here: we assume that the machine is not up as - long as it takes to wrap-around the 64-bit timestamp counter. On a - 4GHz machine it would take 136 years of uptime to wrap around so - this "limitation" is not severe. - - We use this clock also as the monotonic clock since we don't allow - setting the CPU-time clock. If this should ever change we will have - to separate the two. */ -#define EXTRA_CLOCK_CASES \ - case CLOCK_PROCESS_CPUTIME_ID: \ - case CLOCK_THREAD_CPUTIME_ID: \ - { \ - if (__builtin_expect (nsec == 0, 0)) \ - { \ - unsigned long long int 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 (1000000000ULL / 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; - -#include <sysdeps/posix/clock_getres.c> diff --git a/sysdeps/unix/i386/i586/clock_gettime.c b/sysdeps/unix/i386/i586/clock_gettime.c deleted file mode 100644 index 5e28370acf..0000000000 --- a/sysdeps/unix/i386/i586/clock_gettime.c +++ /dev/null @@ -1,107 +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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <time.h> -#include <libc-internal.h> - -#include "cpuclock-init.h" - - -/* This implementation uses the TSC register in modern (i586 and up) IA-32 - processors (most modern clones also provide it). Since we need the - resolution of the clock and since determining this is not cheap, we - cache the value. But this means that systems with processors running - at different speeds or process migration to machines with slower or - faster processors will not work without changes. */ - - -/* 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 unsigned long long int freq; - - -/* We need the starting time for the process. */ -CPUCLOCK_VARDECL (_dl_cpuclock_offset); - - -/* This function is defined in the thread library. */ -extern int __pthread_clock_gettime (unsigned long long int freq, - struct timespec *tp) - __attribute__ ((__weak__)); - - -/* We add an limitation here: we assume that the process is not - running as long as it takes to wrap-around the 64-bit timestamp - counter. On a 4GHz machine it would take 136 years of uptime to - wrap around so this "limitation" is not severe. */ -#define EXTRA_CLOCK_CASES \ - case CLOCK_THREAD_CPUTIME_ID: \ - if (__pthread_clock_gettime != NULL) \ - { \ - 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; \ - } \ - \ - retval = __pthread_clock_gettime (freq, tp); \ - break; \ - } \ - /* FALLTHROUGH */ \ - \ - case CLOCK_PROCESS_CPUTIME_ID: \ - { \ - unsigned long long int 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; \ - } \ - \ - /* Get the current counter. */ \ - asm volatile ("rdtsc" : "=A" (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) * 1000000000ull) / freq; \ - \ - retval = 0; \ - } \ - break; - -#include <sysdeps/unix/clock_gettime.c> diff --git a/sysdeps/unix/i386/i586/clock_nanosleep.c b/sysdeps/unix/i386/i586/clock_nanosleep.c deleted file mode 100644 index a1250cc4bb..0000000000 --- a/sysdeps/unix/i386/i586/clock_nanosleep.c +++ /dev/null @@ -1,25 +0,0 @@ -/* High-resolution sleep with the specified clock. - Copyright (C) 2000 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -/* Additional definitions for the x86 version. */ -#define CLOCK_P(clock) \ - (clock) != CLOCK_PROCESS_CPUTIME_ID \ - && (clock) != CLOCK_THREAD_CPUTIME_ID - -#include <sysdeps/unix/clock_nanosleep.c> diff --git a/sysdeps/unix/i386/i586/clock_settime.c b/sysdeps/unix/i386/i586/clock_settime.c deleted file mode 100644 index af7ed1be87..0000000000 --- a/sysdeps/unix/i386/i586/clock_settime.c +++ /dev/null @@ -1,85 +0,0 @@ -/* Copyright (C) 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <time.h> - -#include "cpuclock-init.h" -#include "libc-internal.h" - -/* This implementation uses the TSC register in modern (i586 and up) IA-32 - processors (most modern clones also provide it). Since we need the - resolution of the clock and since determining this is not cheap, we - cache the value. But this means that systems with processors running - at different speeds or process migration to machines with slower or - faster processors will not work without changes. */ - - -/* 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 unsigned long long int freq; - - -/* We need the starting time for the process. */ -CPUCLOCK_VARDECL (_dl_cpuclock_offset); - - -/* This function is defined in the thread library. */ -extern void __pthread_clock_settime (unsigned long long int offset) - __attribute__ ((__weak__)); - - -/* We add an limitation here: we assume that the process is not - running as long as it takes to wrap-around the 64-bit timestamp - counter. On a 4GHz machine it would take 136 years of uptime to - wrap around so this "limitation" is not severe. */ -#define EXTRA_CLOCK_CASES \ - case CLOCK_PROCESS_CPUTIME_ID: \ - case CLOCK_THREAD_CPUTIME_ID: \ - { \ - unsigned long long int tsc; \ - unsigned long long int usertime; \ - \ - /* First thing is to get the current time. */ \ - asm volatile ("rdtsc" : "=A" (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; \ - } \ - \ - /* Convert the user-provided time into CPU ticks. */ \ - usertime = tp->tv_sec * freq + (tp->tv_nsec * freq) / 1000000000ull; \ - \ - /* Determine the offset and use it as the new base value. */ \ - if (clock_id != CLOCK_THREAD_CPUTIME_ID \ - || __pthread_clock_settime == NULL) \ - _dl_cpuclock_offset = tsc - usertime; \ - else \ - __pthread_clock_settime (tsc - usertime); \ - } \ - break; - -#include <sysdeps/unix/clock_settime.c> diff --git a/sysdeps/unix/i386/i586/cpuclock-init.h b/sysdeps/unix/i386/i586/cpuclock-init.h deleted file mode 100644 index ff1ff9752a..0000000000 --- a/sysdeps/unix/i386/i586/cpuclock-init.h +++ /dev/null @@ -1,27 +0,0 @@ -/* x86 TSC based CPU clock initialization code. - Copyright (C) 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -/* The TSC value has 64 bits. */ -#define CPUCLOCK_VARDEF(name) unsigned long long int name - -/* A declaration. */ -#define CPUCLOCK_VARDECL(name) extern unsigned long long int name - -/* Reading the TSC value is a simple instruction. */ -#define CPUCLOCK_INIT(name) asm volatile ("rdtsc" : "=A" (name)) diff --git a/sysdeps/unix/i386/i686/Implies b/sysdeps/unix/i386/i686/Implies deleted file mode 100644 index 6f31c95d44..0000000000 --- a/sysdeps/unix/i386/i686/Implies +++ /dev/null @@ -1 +0,0 @@ -unix/i386/i586 diff --git a/sysdeps/unix/i386/i686/tempname.c b/sysdeps/unix/i386/i686/tempname.c deleted file mode 100644 index 3d2476e612..0000000000 --- a/sysdeps/unix/i386/i686/tempname.c +++ /dev/null @@ -1,35 +0,0 @@ -/* Copyright (C) 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 Library General Public License as - published by the Free Software Foundation; either version 2 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 - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -/* For i686 and up we have a better and faster source of random bits in the - form of the time stamp counter. */ -#define RANDOM_BITS(Var) \ - if (__builtin_expect (value == UINT64_C (0), 0)) \ - { \ - /* If this is the first time this function is used initialize \ - the variable we accumulate the value in to some somewhat \ - random value. If we'd not do this programs at startup time \ - might have a reduced set of possible names, at least on slow \ - machines. */ \ - struct timeval tv; \ - __gettimeofday (&tv, NULL); \ - value = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec; \ - } \ - __asm__ __volatile__ ("rdtsc" : "=A" (Var)) - -#include_next <tempname.c> diff --git a/sysdeps/unix/sysv/linux/i386/get_clockfreq.c b/sysdeps/unix/sysv/linux/i386/get_clockfreq.c index 4d7303ab26..3caf66c88c 100644 --- a/sysdeps/unix/sysv/linux/i386/get_clockfreq.c +++ b/sysdeps/unix/sysv/linux/i386/get_clockfreq.c @@ -24,7 +24,7 @@ #include <libc-internal.h> -unsigned long long int +hp_timing_t __get_clockfreq (void) { /* We read the information from the /proc filesystem. It contains at @@ -33,7 +33,7 @@ __get_clockfreq (void) or also cpu MHz : 497.841 We search for this line and convert the number in an integer. */ - static unsigned long long int result; + static hp_timing_t result; int fd; /* If this function was called before, we know the result. */ diff --git a/sysdeps/unix/sysv/linux/ia64/get_clockfreq.c b/sysdeps/unix/sysv/linux/ia64/get_clockfreq.c new file mode 100644 index 0000000000..77106eadb7 --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/get_clockfreq.c @@ -0,0 +1,89 @@ +/* Get frequency of the system processor. IA-64/Linux version. + Copyright (C) 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <ctype.h> +#include <fcntl.h> +#include <string.h> +#include <unistd.h> +#include <libc-internal.h> + + +hp_timing_t +__get_clockfreq (void) +{ + /* We read the information from the /proc filesystem. It contains at + least one line like + itc MHz : 733.390988 + We search for this line and convert the number in an integer. */ + static hp_timing_t result; + int fd; + + /* If this function was called before, we know the result. */ + if (result != 0) + return result; + + fd = open ("/proc/cpuinfo", O_RDONLY); + if (__builtin_expect (fd != -1, 1)) + { + /* XXX AFAIK the /proc filesystem can generate "files" only up + to a size of 4096 bytes. */ + char buf[4096]; + ssize_t n; + + n = read (fd, buf, sizeof buf); + if (__builtin_expect (n, 1) > 0) + { + char *mhz = memmem (buf, n, "itc MHz", 7); + + if (__builtin_expect (mhz != NULL, 1)) + { + char *endp = buf + n; + int seen_decpoint = 0; + int ndigits = 0; + + /* Search for the beginning of the string. */ + while (mhz < endp && (*mhz < '0' || *mhz > '9') && *mhz != '\n') + ++mhz; + + while (mhz < endp && *mhz != '\n') + { + if (*mhz >= '0' && *mhz <= '9') + { + result *= 10; + result += *mhz - '0'; + if (seen_decpoint) + ++ndigits; + } + else if (*mhz == '.') + seen_decpoint = 1; + + ++mhz; + } + + /* Compensate for missing digits at the end. */ + while (ndigits++ < 6) + result *= 10; + } + } + + close (fd); + } + + return result; +} diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/bits/time.h b/sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/bits/time.h new file mode 100644 index 0000000000..26d9b51693 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9/bits/time.h @@ -0,0 +1,73 @@ +/* System-dependent timing definitions. Linux/SPARCv9 version. + Copyright (C) 1996, 1997, 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* + * Never include this file directly; use <time.h> instead. + */ + +#ifndef __need_timeval +# ifndef _BITS_TIME_H +# define _BITS_TIME_H 1 + +/* ISO/IEC 9899:1990 7.12.1: <time.h> + The macro `CLOCKS_PER_SEC' is the number per second of the value + returned by the `clock' function. */ +/* CAE XSH, Issue 4, Version 2: <time.h> + The value of CLOCKS_PER_SEC is required to be 1 million on all + XSI-conformant systems. */ +# define CLOCKS_PER_SEC 1000000l + +# if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K +/* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK + presents the real value for clock ticks per second for the system. */ +# include <bits/types.h> +extern long int __sysconf (int); +# define CLK_TCK ((__clock_t) __sysconf (2)) /* 2 is _SC_CLK_TCK */ +# endif + +# ifdef __USE_POSIX199309 +/* Identifier for system-wide realtime clock. */ +# define CLOCK_REALTIME 0 +/* High-resolution timer from the CPU. */ +# define CLOCK_PROCESS_CPUTIME_ID 2 +/* Thread-specific CPU-time clock. */ +# define CLOCK_THREAD_CPUTIME_ID 3 + +/* Flag to indicate time is absolute. */ +# define TIMER_ABSTIME 1 +# endif + +# endif /* bits/time.h */ +#endif + +#ifdef __need_timeval +# undef __need_timeval +# ifndef _STRUCT_TIMEVAL +# define _STRUCT_TIMEVAL 1 +# include <bits/types.h> + +/* A time value that is accurate to the nearest + microsecond but also has a range of years. */ +struct timeval + { + __time_t tv_sec; /* Seconds. */ + __suseconds_t tv_usec; /* Microseconds. */ + }; +# endif /* struct timeval */ +#endif /* need timeval */ diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9b/bits/time.h b/sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9b/bits/time.h new file mode 100644 index 0000000000..6d0d8e4687 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/sparcv9b/bits/time.h @@ -0,0 +1,73 @@ +/* System-dependent timing definitions. Linux/SPARCv9b version. + Copyright (C) 1996, 1997, 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* + * Never include this file directly; use <time.h> instead. + */ + +#ifndef __need_timeval +# ifndef _BITS_TIME_H +# define _BITS_TIME_H 1 + +/* ISO/IEC 9899:1990 7.12.1: <time.h> + The macro `CLOCKS_PER_SEC' is the number per second of the value + returned by the `clock' function. */ +/* CAE XSH, Issue 4, Version 2: <time.h> + The value of CLOCKS_PER_SEC is required to be 1 million on all + XSI-conformant systems. */ +# define CLOCKS_PER_SEC 1000000l + +# if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K +/* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK + presents the real value for clock ticks per second for the system. */ +# include <bits/types.h> +extern long int __sysconf (int); +# define CLK_TCK ((__clock_t) __sysconf (2)) /* 2 is _SC_CLK_TCK */ +# endif + +# ifdef __USE_POSIX199309 +/* Identifier for system-wide realtime clock. */ +# define CLOCK_REALTIME 0 +/* High-resolution timer from the CPU. */ +# define CLOCK_PROCESS_CPUTIME_ID 2 +/* Thread-specific CPU-time clock. */ +# define CLOCK_THREAD_CPUTIME_ID 3 + +/* Flag to indicate time is absolute. */ +# define TIMER_ABSTIME 1 +# endif + +# endif /* bits/time.h */ +#endif + +#ifdef __need_timeval +# undef __need_timeval +# ifndef _STRUCT_TIMEVAL +# define _STRUCT_TIMEVAL 1 +# include <bits/types.h> + +/* A time value that is accurate to the nearest + microsecond but also has a range of years. */ +struct timeval + { + __time_t tv_sec; /* Seconds. */ + __suseconds_t tv_usec; /* Microseconds. */ + }; +# endif /* struct timeval */ +#endif /* need timeval */ diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/bits/time.h b/sysdeps/unix/sysv/linux/sparc/sparc64/bits/time.h new file mode 100644 index 0000000000..752b0a03f1 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/bits/time.h @@ -0,0 +1,73 @@ +/* System-dependent timing definitions. Linux/SPARC64 version. + Copyright (C) 1996, 1997, 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* + * Never include this file directly; use <time.h> instead. + */ + +#ifndef __need_timeval +# ifndef _BITS_TIME_H +# define _BITS_TIME_H 1 + +/* ISO/IEC 9899:1990 7.12.1: <time.h> + The macro `CLOCKS_PER_SEC' is the number per second of the value + returned by the `clock' function. */ +/* CAE XSH, Issue 4, Version 2: <time.h> + The value of CLOCKS_PER_SEC is required to be 1 million on all + XSI-conformant systems. */ +# define CLOCKS_PER_SEC 1000000l + +# if !defined __STRICT_ANSI__ && !defined __USE_XOPEN2K +/* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK + presents the real value for clock ticks per second for the system. */ +# include <bits/types.h> +extern long int __sysconf (int); +# define CLK_TCK ((__clock_t) __sysconf (2)) /* 2 is _SC_CLK_TCK */ +# endif + +# ifdef __USE_POSIX199309 +/* Identifier for system-wide realtime clock. */ +# define CLOCK_REALTIME 0 +/* High-resolution timer from the CPU. */ +# define CLOCK_PROCESS_CPUTIME_ID 2 +/* Thread-specific CPU-time clock. */ +# define CLOCK_THREAD_CPUTIME_ID 3 + +/* Flag to indicate time is absolute. */ +# define TIMER_ABSTIME 1 +# endif + +# endif /* bits/time.h */ +#endif + +#ifdef __need_timeval +# undef __need_timeval +# ifndef _STRUCT_TIMEVAL +# define _STRUCT_TIMEVAL 1 +# include <bits/types.h> + +/* A time value that is accurate to the nearest + microsecond but also has a range of years. */ +struct timeval + { + __time_t tv_sec; /* Seconds. */ + __suseconds_t tv_usec; /* Microseconds. */ + }; +# endif /* struct timeval */ +#endif /* need timeval */ |