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* sysdeps/unix/sysv/linux/i386/Makefile: New file. Wed Apr 24 17:35:30 Ulrich Drepper <drepper@cygnus.com> * inet/netinet/in.h, socket/sys/socket.h: Move to sysdeps/generic/netinet/in.h, sysdeps/generic/sys/socket.h. * netinet/in.h, sys/socket.h: Remove file. * misc/Makefile (routines): Add fdatasync. * posix/Makefile (headers): Add sched.h. (routines): Add nanosleep, sched_setp, sched_getp, sched_sets, sched_gets, sched_yield, sched_primax, sched_primin, sched_rr_gi. * posix/getconf.c (vars): Add entries for _POSIX_REALTIME_SIGNALS, _POSIX_PRIORITY_SCHEDULING, _POSIX_TIMERS, _POSIX_ASYNCHRONOUS_IO, _POSIX_PRIORITIZED_IO, _POSIX_SYNCHRONIZED_IO, _POSIX_FSYNC, _POSIX_MAPPED_FILES, _POSIX_MEMLOCK, _POSIX_MEMLOCK_RANGE, _POSIX_MEMORY_PROTECTION, _POSIX_MESSAGE_PASSING, _POSIX_SEMAPHORES, _POSIX_SHARED_MEMORY_OBJECTS. * posix/sched.h: New file. Header for POSIX scheduling interface. * posix/unistd.h: Describe options from POSIX.4. Add declaration of fdatasync. * sysdeps/generic/confname.h: Add definition for _SC_REALTIME_SIGNALS, _SC_PRIORITY_SCHEDULING, _SC_TIMERS, _SC_ASYNCHRONOUS_IO, _SC_PRIORITIZED_IO, _SC_SYNCHRONIZED_IO, _SC_FSYNC, _SC_MAPPED_FILES, _SC_MEMLOCK, _SC_MEMLOCK_RANGE, _SC_MEMORY_PROTECTION, _SC_MESSAGE_PASSING, _SC_SEMAPHORES, _SC_SHARED_MEMORY_OBJECTS. * sysdeps/generic/fdatasync.c: New file. Default implementation simply uses fsync. * sysdeps/generic/netinit/in.h: Moved to here from inet/netinet/in.h. * sysdeps/generic/schedbits.h: New file. System dependent defintion for POSIX.4 scheduling interface. * sysdeps/generic/sys/socket.h: Moved to here from socket/sys/socket.h. * sysdeps/stub/nanosleep.c, sysdeps/stub/sched_getp.c, sysdeps/stub/sched_gets.c, sysdeps/stub/sched_primax.c, sysdeps/stub/sched_primin.c, sysdeps/stub/sched_rr_gi.c, sysdeps/stub/sched_setp.c, sysdeps/stub/sched_sets.c, sysdeps/stub/sched_yield.c: New file: Stub implementation for systems missing these POSIX.4 system calls. * sysdeps/unix/sysv/linux/gnu/types.h, sysdeps/unix/sysv/linux/ioctls.h: Use kernel header for data type definitions. * sysdeps/unix/sysv/linux/netinet/in.h: New file. Linux specific version. * sysdeps/unix/sysv/linux/posix_opt.h: New file. Define POSIX options applicable for Linux. * sysdeps/unix/sysv/linux/syscalls.list: Add definitions for fdatasync, nanosleep, sched_setparam, sched_getparam, sched_setscheduler, sched_getscheduler, sched_yield, sched_get_priority_max, sched_get_priority_min, and sched_rr_get_interval. * sysdeps/unix/sysv/linux/sysconf.c: Add handling of POSIX.4 options. * sysdeps/unix/sysv/linux/termbits.h: Use kernel headers. * time/sys/time.h: Remove definition of `struct timespec'. * time/time.h (struct timespec): Move definition to here. variable, LUCKY, to use instead of setting D to -1 (which fouls
159 lines
5.7 KiB
C
159 lines
5.7 KiB
C
/* Copyright (C) 1991, 92, 93, 94, 96 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#ifndef _SYS_TIME_H
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#define _SYS_TIME_H 1
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#include <features.h>
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#include <time.h>
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__BEGIN_DECLS
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/* A time value that is accurate to the nearest
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microsecond but also has a range of years. */
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struct timeval
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{
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int tv_sec; /* Seconds. */
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int tv_usec; /* Microseconds. */
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};
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/* Macros for converting between `struct timeval' and `struct timespec'. */
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#define TIMEVAL_TO_TIMESPEC(tv, ts) { \
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(ts)->ts_sec = (tv)->tv_sec; \
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(ts)->ts_nsec = (tv)->tv_usec * 1000; \
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}
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#define TIMESPEC_TO_TIMEVAL(tv, ts) { \
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(tv)->tv_sec = (ts)->ts_sec; \
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(tv)->tv_usec = (ts)->ts_nsec / 1000; \
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}
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/* Structure crudely representing a timezone.
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This is obsolete and should never be used. */
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struct timezone
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{
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int tz_minuteswest; /* Minutes west of GMT. */
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int tz_dsttime; /* Nonzero if DST is ever in effect. */
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};
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/* Get the current time of day and timezone information,
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putting it into *TV and *TZ. If TZ is NULL, *TZ is not filled.
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Returns 0 on success, -1 on errors.
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NOTE: This form of timezone information is obsolete.
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Use the functions and variables declared in <time.h> instead. */
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extern int __gettimeofday __P ((struct timeval *__tv,
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struct timezone *__tz));
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extern int gettimeofday __P ((struct timeval *__tv,
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struct timezone *__tz));
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/* Set the current time of day and timezone information.
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This call is restricted to the super-user. */
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extern int __settimeofday __P ((__const struct timeval *__tv,
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__const struct timezone *__tz));
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extern int settimeofday __P ((__const struct timeval *__tv,
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__const struct timezone *__tz));
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/* Adjust the current time of day by the amount in DELTA.
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If OLDDELTA is not NULL, it is filled in with the amount
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of time adjustment remaining to be done from the last `adjtime' call.
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This call is restricted to the super-user. */
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extern int __adjtime __P ((__const struct timeval *__delta,
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struct timeval *__olddelta));
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extern int adjtime __P ((__const struct timeval *__delta,
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struct timeval *__olddelta));
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/* Values for the first argument to `getitimer' and `setitimer'. */
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enum __itimer_which
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{
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/* Timers run in real time. */
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ITIMER_REAL = 0,
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/* Timers run only when the process is executing. */
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ITIMER_VIRTUAL = 1,
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/* Timers run when the process is executing and when
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the system is executing on behalf of the process. */
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ITIMER_PROF = 2
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};
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/* Type of the second argument to `getitimer' and
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the second and third arguments `setitimer'. */
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struct itimerval
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{
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/* Value to put into `it_value' when the timer expires. */
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struct timeval it_interval;
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/* Time to the next timer expiration. */
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struct timeval it_value;
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};
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/* Set *VALUE to the current setting of timer WHICH.
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Return 0 on success, -1 on errors. */
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extern int __getitimer __P ((enum __itimer_which __which,
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struct itimerval *__value));
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extern int getitimer __P ((enum __itimer_which __which,
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struct itimerval *__value));
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/* Set the timer WHICH to *NEW. If OLD is not NULL,
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set *OLD to the old value of timer WHICH.
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Returns 0 on success, -1 on errors. */
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extern int __setitimer __P ((enum __itimer_which __which,
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struct itimerval *__new,
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struct itimerval *__old));
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extern int setitimer __P ((enum __itimer_which __which,
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struct itimerval *__new,
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struct itimerval *__old));
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/* Change the access time of FILE to TVP[0] and
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the modification time of FILE to TVP[1]. */
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extern int __utimes __P ((__const char *__file, struct timeval __tvp[2]));
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extern int utimes __P ((__const char *__file, struct timeval __tvp[2]));
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/* Convenience macros for operations on timevals.
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NOTE: `timercmp' does not work for >= or <=. */
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#define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
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#define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)
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#define timercmp(a, b, CMP) \
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(((a)->tv_sec == (b)->tv_sec) ? \
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((a)->tv_usec CMP (b)->tv_usec) : \
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((a)->tv_sec CMP (b)->tv_sec))
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#define timeradd(a, b, result) \
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do { \
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(result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \
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(result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \
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if ((result)->tv_usec >= 1000000) \
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{ \
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++(result)->tv_sec; \
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(result)->tv_usec -= 1000000; \
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} \
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} while (0)
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#define timersub(a, b, result) \
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do { \
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(result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
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(result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
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if ((result)->tv_usec < 0) { \
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--(result)->tv_sec; \
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(result)->tv_usec += 1000000; \
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} \
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} while (0)
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__END_DECLS
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#endif /* sys/time.h */
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