diff options
| -rw-r--r-- | linuxthreads/ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/posix/clock_getres.c | 43 | ||||
| -rw-r--r-- | sysdeps/unix/clock_gettime.c | 21 | ||||
| -rw-r--r-- | sysdeps/unix/clock_nanosleep.c | 32 | ||||
| -rw-r--r-- | sysdeps/unix/clock_settime.c | 19 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/clock_getres.c | 76 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/clock_gettime.c | 76 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/clock_nanosleep.c | 65 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/clock_settime.c | 73 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/kernel-features.h | 8 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/sysconf.c | 51 |
11 files changed, 433 insertions, 37 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index c9d18a9632..76589b97e5 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -1,3 +1,9 @@ +2003-03-02 Ulrich Drepper <drepper@redhat.com> + + * sysdeps/unix/sysv/linux/bits/posix_opt.h: Define + _POSIX_MONOTONIC_CLOCK. + * linuxthreads/sysdeps/unix/sysv/linux/i386/bits/posix_opt.h: Likewise. + 2003-03-01 Roland McGrath <roland@redhat.com> * sysdeps/powerpc/powerpc64/pt-machine.h diff --git a/sysdeps/posix/clock_getres.c b/sysdeps/posix/clock_getres.c index 8bf648f51f..91c57629ca 100644 --- a/sysdeps/posix/clock_getres.c +++ b/sysdeps/posix/clock_getres.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. +/* Copyright (C) 1999, 2000, 2001, 2003 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 @@ -24,7 +24,7 @@ #include <libc-internal.h> -#if HP_TIMING_AVAIL +#if HP_TIMING_AVAIL && !defined HANDLED_CPUTIME /* Clock frequency of the processor. */ static long int nsec; #endif @@ -38,24 +38,33 @@ clock_getres (clockid_t clock_id, struct timespec *res) switch (clock_id) { - case CLOCK_REALTIME: - { - long int clk_tck = sysconf (_SC_CLK_TCK); - - if (__builtin_expect (clk_tck != -1, 1)) - { - /* This implementation assumes that the realtime clock has a - resolution higher than 1 second. This is the case for any - reasonable implementation. */ - res->tv_sec = 0; - res->tv_nsec = 1000000000 / clk_tck; +#define HANDLE_REALTIME \ + do { \ + long int clk_tck = sysconf (_SC_CLK_TCK); \ + \ + if (__builtin_expect (clk_tck != -1, 1)) \ + { \ + /* This implementation assumes that the realtime clock has a \ + resolution higher than 1 second. This is the case for any \ + reasonable implementation. */ \ + res->tv_sec = 0; \ + res->tv_nsec = 1000000000 / clk_tck; \ + \ + retval = 0; \ + } \ + } while (0) + +#ifdef SYSDEP_GETRES + SYSDEP_GETRES; +#endif - retval = 0; - } - } +#ifndef HANDLED_REALTIME + case CLOCK_REALTIME: + HANDLE_REALTIME; break; +#endif /* handled REALTIME */ -#if HP_TIMING_AVAIL +#if HP_TIMING_AVAIL && !defined HANDLED_CPUTIME case CLOCK_PROCESS_CPUTIME_ID: case CLOCK_THREAD_CPUTIME_ID: { diff --git a/sysdeps/unix/clock_gettime.c b/sysdeps/unix/clock_gettime.c index 5dc329e1c0..4c26a370e6 100644 --- a/sysdeps/unix/clock_gettime.c +++ b/sysdeps/unix/clock_gettime.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc. +/* Copyright (C) 1999, 2000, 2001, 2002, 2003 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 @@ -46,12 +46,23 @@ clock_gettime (clockid_t clock_id, struct timespec *tp) switch (clock_id) { +#define HANDLE_REALTIME \ + do { \ + retval = gettimeofday (&tv, NULL); \ + if (retval == 0) \ + /* Convert into `timespec'. */ \ + TIMEVAL_TO_TIMESPEC (&tv, tp); \ + } while (0) + +#ifdef SYSDEP_GETTIME + SYSDEP_GETTIME; +#endif + +#ifndef HANDLED_REALTIME case CLOCK_REALTIME: - retval = gettimeofday (&tv, NULL); - if (retval == 0) - /* Convert into `timespec'. */ - TIMEVAL_TO_TIMESPEC (&tv, tp); + HANDLE_REALTIME; break; +#endif #if HP_TIMING_AVAIL case CLOCK_PROCESS_CPUTIME_ID: diff --git a/sysdeps/unix/clock_nanosleep.c b/sysdeps/unix/clock_nanosleep.c index 4f32b3685c..358269852a 100644 --- a/sysdeps/unix/clock_nanosleep.c +++ b/sysdeps/unix/clock_nanosleep.c @@ -1,5 +1,5 @@ /* High-resolution sleep with the specified clock. - Copyright (C) 2000, 2001 Free Software Foundation, Inc. + Copyright (C) 2000, 2001, 2003 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 @@ -24,11 +24,16 @@ #if HP_TIMING_AVAIL -# define CLOCK_P(clock) \ - (clock) != CLOCK_PROCESS_CPUTIME_ID \ - && (clock) != CLOCK_THREAD_CPUTIME_ID +# define CPUCLOCK_P(clock) \ + ((clock) != CLOCK_PROCESS_CPUTIME_ID \ + && (clock) != CLOCK_THREAD_CPUTIME_ID) #else -# define CLOCK_P(clock) 0 +# define CPUCLOCK_P(clock) 0 +#endif + +#ifndef INVALID_CLOCK_P +# define INVALID_CLOCK_P(cl) \ + ((cl) < CLOCK_REALTIME || (cl) > CLOCK_THREAD_CPUTIME_ID || CPUCLOCK_P (cl)) #endif @@ -44,6 +49,16 @@ clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req, || __builtin_expect (req->tv_nsec, 0) >= 1000000000) return EINVAL; + if (CPUCLOCK_P (clock_id)) + return ENOTSUP; + + if (INVALID_CLOCK_P (clock_id)) + return EINVAL; + +#ifdef SYSDEP_NANOSLEEP + SYSDEP_NANOSLEEP; +#endif + /* If we got an absolute time, remap it. */ if (flags == TIMER_ABSTIME) { @@ -76,11 +91,8 @@ clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req, else if (__builtin_expect (flags, 0) != 0) return EINVAL; else if (clock_id != CLOCK_REALTIME) - { - /* Make sure the clock ID is correct. */ - if (__builtin_expect (! CLOCK_P (clock_id), 0)) - return EINVAL; - } + /* Not supported. */ + return ENOTSUP; return __builtin_expect (nanosleep (req, rem), 0) ? errno : 0; } diff --git a/sysdeps/unix/clock_settime.c b/sysdeps/unix/clock_settime.c index 407e759137..a6c7af19ec 100644 --- a/sysdeps/unix/clock_settime.c +++ b/sysdeps/unix/clock_settime.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc. +/* Copyright (C) 1999, 2000, 2001, 2002, 2003 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 @@ -52,11 +52,22 @@ clock_settime (clockid_t clock_id, const struct timespec *tp) switch (clock_id) { - case CLOCK_REALTIME: - TIMESPEC_TO_TIMEVAL (&tv, tp); +#define HANDLE_REALTIME \ + do { \ + TIMESPEC_TO_TIMEVAL (&tv, tp); \ + \ + retval = settimeofday (&tv, NULL); \ + while (0) + +#ifdef SYSDEP_GETTIME + SYSDEP_GETTIME; +#endif - retval = settimeofday (&tv, NULL); +#ifndef HANDLED_REALTIME + case CLOCK_REALTIME: + HANDLE_REALTIME; break; +#endif #if HP_TIMING_AVAIL case CLOCK_PROCESS_CPUTIME_ID: diff --git a/sysdeps/unix/sysv/linux/clock_getres.c b/sysdeps/unix/sysv/linux/clock_getres.c new file mode 100644 index 0000000000..442fbd5705 --- /dev/null +++ b/sysdeps/unix/sysv/linux/clock_getres.c @@ -0,0 +1,76 @@ +/* Copyright (C) 2003 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 <sysdep.h> + +#include "kernel-features.h" + + +#ifdef __ASSUME_POSIX_TIMERS +/* This means the REALTIME and MONOTONIC clock are definitely + supported in the kernel. */ +# define SYSDEP_GETRES \ + case CLOCK_REALTIME: \ + case CLOCK_MONOTONIC: \ + retval = INLINE_SYSCALL (clock_getres, 2, clock_id, res); \ + break +#elif defined __NR_clock_getres +/* 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_GETRES \ + case CLOCK_REALTIME: \ + case CLOCK_MONOTONIC: \ + { \ + int e = EINVAL; \ + \ + if (!__libc_missing_posix_timers) \ + { \ + INTERNAL_SYSCALL_DECL (err); \ + int r = INTERNAL_SYSCALL (clock_getres, err, 2, clock_id, res); \ + if (!INTERNAL_SYSCALL_ERROR_P (r, err)) \ + { \ + retval = 0; \ + break; \ + } \ + \ + e = INTERNAL_SYSCALL_ERRNO (r, err); \ + if (e == ENOSYS) \ + { \ + __libc_missing_posix_timers = 1; \ + e = EINVAL; \ + } \ + } \ + \ + /* Fallback code. */ \ + if (e == EINVAL && clock_id == CLOCK_REALTIME) \ + HANDLE_REALTIME; \ + else \ + __set_errno (e); \ + } \ + break +#endif + +#ifdef __NR_clock_getres +/* We handled the REALTIME clock here. */ +# define HANDLED_REALTIME 1 +#endif + +#include <sysdeps/posix/clock_getres.c> diff --git a/sysdeps/unix/sysv/linux/clock_gettime.c b/sysdeps/unix/sysv/linux/clock_gettime.c new file mode 100644 index 0000000000..522fac32a7 --- /dev/null +++ b/sysdeps/unix/sysv/linux/clock_gettime.c @@ -0,0 +1,76 @@ +/* Copyright (C) 2003 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 <sysdep.h> + +#include "kernel-features.h" + + +#ifdef __ASSUME_POSIX_TIMERS +/* This means the REALTIME and MONOTONIC clock are definitely + supported in the kernel. */ +# define SYSDEP_GETTIME \ + case CLOCK_REALTIME: \ + case CLOCK_MONOTONIC: \ + retval = INLINE_SYSCALL (clock_gettime, 2, clock_id, tp); \ + break +#elif defined __NR_clock_gettime +/* Is the syscall known to exist? */ +int __libc_missing_posix_timers attribute_hidden; + +/* The REALTIME and MONOTONIC clock might be available. Try the + syscall first. */ +# define SYSDEP_GETTIME \ + case CLOCK_REALTIME: \ + case CLOCK_MONOTONIC: \ + { \ + int e = EINVAL; \ + \ + if (!__libc_missing_posix_timers) \ + { \ + INTERNAL_SYSCALL_DECL (err); \ + int r = INTERNAL_SYSCALL (clock_gettime, err, 2, clock_id, tp); \ + if (!INTERNAL_SYSCALL_ERROR_P (r, err)) \ + { \ + retval = 0; \ + break; \ + } \ + \ + e = INTERNAL_SYSCALL_ERRNO (r, err); \ + if (e == ENOSYS) \ + { \ + __libc_missing_posix_timers = 1; \ + e = EINVAL; \ + } \ + } \ + \ + /* Fallback code. */ \ + if (e == EINVAL && clock_id == CLOCK_REALTIME) \ + HANDLE_REALTIME; \ + else \ + __set_errno (e); \ + } \ + break +#endif + +#ifdef __NR_clock_gettime +/* We handled the REALTIME clock here. */ +# define HANDLED_REALTIME 1 +#endif + +#include <sysdeps/unix/clock_gettime.c> diff --git a/sysdeps/unix/sysv/linux/clock_nanosleep.c b/sysdeps/unix/sysv/linux/clock_nanosleep.c new file mode 100644 index 0000000000..ceb3801eb9 --- /dev/null +++ b/sysdeps/unix/sysv/linux/clock_nanosleep.c @@ -0,0 +1,65 @@ +/* Copyright (C) 2003 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 <sysdep.h> +#include "kernel-features.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; + + r = INTERNAL_SYSCALL (clock_nanosleep, err, 4, clock_id, flags, req, rem); + 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) \ + { \ + INTERNAL_SYSCALL_DECL (err); \ + int r = INTERNAL_SYSCALL (clock_nanosleep, err, 4, clock_id, flags, \ + req, rem); \ + \ + 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 diff --git a/sysdeps/unix/sysv/linux/clock_settime.c b/sysdeps/unix/sysv/linux/clock_settime.c new file mode 100644 index 0000000000..d57c70e5e1 --- /dev/null +++ b/sysdeps/unix/sysv/linux/clock_settime.c @@ -0,0 +1,73 @@ +/* Copyright (C) 2003 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 <sysdep.h> + +#include "kernel-features.h" + + +#ifdef __ASSUME_POSIX_TIMERS +/* This means the REALTIME clock is definitely supported in the + kernel. */ +# define SYSDEP_SETTIME \ + case CLOCK_REALTIME: \ + retval = INLINE_SYSCALL (clock_settime, 2, clock_id, tp); \ + break +#elif defined __NR_clock_settime +/* Is the syscall known to exist? */ +extern int __libc_missing_posix_timers attribute_hidden; + +/* The REALTIME clock might be available. Try the syscall first. */ +# define SYSDEP_SETTIME \ + case CLOCK_REALTIME: \ + { \ + int e = EINVAL; \ + \ + if (!__libc_missing_posix_timers) \ + { \ + INTERNAL_SYSCALL_DECL (err); \ + int r = INTERNAL_SYSCALL (clock_settime, err, 2, clock_id, tp); \ + if (!INTERNAL_SYSCALL_ERROR_P (r, err)) \ + { \ + retval = 0; \ + break; \ + } \ + \ + e = INTERNAL_SYSCALL_ERRNO (r, err); \ + if (e == ENOSYS) \ + { \ + __libc_missing_posix_timers = 1; \ + e = EINVAL; \ + } \ + } \ + \ + /* Fallback code. */ \ + if (e == EINVAL && clock_id == CLOCK_REALTIME) \ + HANDLE_REALTIME; \ + else \ + __set_errno (e); \ + } \ + break +#endif + +#ifdef __NR_clock_settime +/* We handled the REALTIME clock here. */ +# define HANDLED_REALTIME 1 +#endif + +#include <sysdeps/unix/clock_settime.c> diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h index 239d6379b4..f9d1f09050 100644 --- a/sysdeps/unix/sysv/linux/kernel-features.h +++ b/sysdeps/unix/sysv/linux/kernel-features.h @@ -1,6 +1,6 @@ /* Set flags signalling availability of kernel features based on given kernel version number. - Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc. + Copyright (C) 1999, 2000, 2001, 2002, 2003 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 @@ -264,3 +264,9 @@ # define __ASSUME_FCNTL64 1 # define __ASSUME_VFORK_SYSCALL 1 #endif + +/* Beginning with 2.5.63 support for realtime and monotonic clocks and + timers based on them is available. */ +#if __LINUX_KERNEL_VERSION >= 132415 +# define __ASSUME_POSIX_TIMERS 1 +#endif diff --git a/sysdeps/unix/sysv/linux/sysconf.c b/sysdeps/unix/sysv/linux/sysconf.c new file mode 100644 index 0000000000..92b1e66782 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sysconf.c @@ -0,0 +1,51 @@ +/* Get file-specific information about a file. Linux version. + Copyright (C) 2003 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 <sysdep.h> +#include <time.h> +#include <unistd.h> + +static long int posix_sysconf (int name); + +/* Define this first, so it can be inlined. */ +#define __sysconf static posix_sysconf +#include <sysdeps/posix/sysconf.c> + + +/* Get the value of the system variable NAME. */ +long int +__sysconf (int name) +{ + switch (name) + { +#ifdef __NR_clock_getres + case _SC_MONOTONIC_CLOCK: + /* Check using the clock_getres system call. */ + { + struct timespec ts; + INTERNAL_SYSCALL_DECL (err); + int r = INTERNAL_SYSCALL (clock_getres, err, 2, CLOCK_MONOTONIC, &ts); + return INTERNAL_SYSCALL_ERROR_P (r, err) ? 0 : 1; + } +#endif + + default: + return posix_sysconf (name); + } +} |