mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-11 13:50:06 +00:00
2f4f3bd4a9
* sysdeps/unix/sysv/linux/kernel-posix-cpu-timers.h: New file. * sysdeps/unix/sysv/linux/clock_getcpuclockid.c: New file. * sysdeps/unix/sysv/linux/ia64/clock_getcpuclockid.c (HAS_CPUCLOCK): New macro. (clock_getcpuclockid): Function removed. #include the new linux file to define it instead. * sysdeps/unix/clock_gettime.c [HP_TIMING_AVAIL] (hp_timing_gettime): New function, broken out of ... (clock_gettime) [HP_TIMING_AVAIL]: ... here. Call it. (realtime_gettime): New function, broken out of ... (clock_gettime) [! HANDLED_REALTIME]: ... here. Call it. (clock_gettime) [SYSDEP_GETTIME_CPU]: Use new macro in default case. * sysdeps/unix/sysv/linux/clock_gettime.c (SYSCALL_GETTIME): New macro. (SYSDEP_GETTIME_CPUTIME): New macro. (SYSDEP_GETTIME): Use both. [! __ASSUME_POSIX_TIMERS] (maybe_syscall_gettime): New function, broken out of ... (SYSDEP_GETTIME): ... here. Use it. [__NR_clock_gettime] (HANDLED_CPUTIME): Define it. (SYSDEP_GETTIME_CPUTIME): New macro. Handle CPU timers by trying kernel support and falling back to hp-timing code. * sysdeps/posix/clock_getres.c [HP_TIMING_AVAIL] (hp_timing_getres): New function, broken out of ... (clock_getres) [HP_TIMING_AVAIL]: ... here. Call it. (realtime_getres): New function, broken out of ... (clock_getres) [! HANDLED_REALTIME]: ... here. Call it. (clock_getres) [SYSDEP_GETRES_CPU]: Use new macro in default case. * sysdeps/unix/sysv/linux/clock_getres.c (SYSCALL_GETRES): New macro. (SYSDEP_GETRES_CPUTIME): New macro. (SYSDEP_GETRES): Use both. [! __ASSUME_POSIX_TIMERS] (maybe_syscall_getres): New function, broken out of ... (SYSDEP_GETRES): ... here. Use it. [__NR_clock_getres] (HANDLED_CPUTIME): Define it. (SYSDEP_GETRES_CPUTIME): New macro. Handle CPU timers by trying kernel support and falling back to hp-timing code. * sysdeps/unix/sysv/linux/clock_nanosleep.c: Handle CLOCK_PROCESS_CPUTIME_ID and CLOCK_PROCESS_THREAD_ID specially, translating to the kernel clockid_t for our own process/thread clock.
97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
/* Copyright (C) 2003, 2004, 2005 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 <time.h>
|
|
#include <errno.h>
|
|
|
|
#include <sysdep-cancel.h>
|
|
#include "kernel-features.h"
|
|
#include "kernel-posix-cpu-timers.h"
|
|
|
|
|
|
#ifdef __ASSUME_POSIX_TIMERS
|
|
/* We can simply use the syscall. The CPU clocks are not supported
|
|
with this function. */
|
|
int
|
|
clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
|
|
struct timespec *rem)
|
|
{
|
|
INTERNAL_SYSCALL_DECL (err);
|
|
int r;
|
|
|
|
if (clock_id == CLOCK_THREAD_CPUTIME_ID)
|
|
return EINVAL;
|
|
if (clock_id == CLOCK_PROCESS_CPUTIME_ID)
|
|
clock_id = MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED);
|
|
|
|
if (SINGLE_THREAD_P)
|
|
r = INTERNAL_SYSCALL (clock_nanosleep, err, 4, clock_id, flags, req, rem);
|
|
else
|
|
{
|
|
int oldstate = LIBC_CANCEL_ASYNC ();
|
|
|
|
r = INTERNAL_SYSCALL (clock_nanosleep, err, 4, clock_id, flags, req,
|
|
rem);
|
|
|
|
LIBC_CANCEL_RESET (oldstate);
|
|
}
|
|
|
|
return (INTERNAL_SYSCALL_ERROR_P (r, err)
|
|
? INTERNAL_SYSCALL_ERRNO (r, err) : 0);
|
|
}
|
|
|
|
#else
|
|
# ifdef __NR_clock_nanosleep
|
|
/* Is the syscall known to exist? */
|
|
extern int __libc_missing_posix_timers attribute_hidden;
|
|
|
|
/* The REALTIME and MONOTONIC clock might be available. Try the
|
|
syscall first. */
|
|
# define SYSDEP_NANOSLEEP \
|
|
if (!__libc_missing_posix_timers) \
|
|
{ \
|
|
clockid_t syscall_clockid; \
|
|
INTERNAL_SYSCALL_DECL (err); \
|
|
\
|
|
if (clock_id == CLOCK_THREAD_CPUTIME_ID) \
|
|
return EINVAL; \
|
|
if (clock_id == CLOCK_PROCESS_CPUTIME_ID) \
|
|
syscall_clockid = MAKE_PROCESS_CPUCLOCK (0, CPUCLOCK_SCHED); \
|
|
else \
|
|
syscall_clockid = clock_id; \
|
|
\
|
|
int oldstate = LIBC_CANCEL_ASYNC (); \
|
|
\
|
|
int r = INTERNAL_SYSCALL (clock_nanosleep, err, 4, \
|
|
syscall_clockid, flags, req, rem); \
|
|
\
|
|
LIBC_CANCEL_RESET (oldstate); \
|
|
\
|
|
if (!INTERNAL_SYSCALL_ERROR_P (r, err)) \
|
|
return 0; \
|
|
\
|
|
if (INTERNAL_SYSCALL_ERRNO (r, err) != ENOSYS) \
|
|
return INTERNAL_SYSCALL_ERRNO (r, err); \
|
|
\
|
|
__libc_missing_posix_timers = 1; \
|
|
}
|
|
# endif
|
|
|
|
# include <sysdeps/unix/clock_nanosleep.c>
|
|
#endif
|