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* 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.
This commit is contained in:
Ulrich Drepper
2001-04-23 19:01:10 +00:00
parent bc183edc4e
commit 3b5c1b57d3
32 changed files with 578 additions and 398 deletions
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63
sysdeps/unix/clock_gettime.c
View File

@ -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);