mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 19:00:09 +00:00
05b68e14b1
Many headers are expected to expose a subset of the type definitions
in time.h. time.h has a whole bunch of messy logic for conditionally
defining some its types and structs, but, as best I can tell, this
has never worked 100%. In particular, __need_timespec is ineffective
if _TIME_H has already been defined, which means that if you compile
#include <time.h>
#include <sched.h>
with e.g. -fsyntax-only -std=c89 -Wall -Wsystem-headers, you will get
In file included from test.c:2:0:
/usr/include/sched.h:74:57: warning: "struct timespec" declared inside
parameter list will not be visible outside of this definition or declaration
extern int sched_rr_get_interval (__pid_t __pid, struct timespec *__t) __THROW;
^~~~~~~~
And if you want to _use_ sched_rr_get_interval in a TU compiled that
way, you're hosed.
This patch replaces all of that with small bits/types/TYPE.h headers
as introduced earlier. time.h and bits/time.h are now *much* simpler,
and a lot of other headers are slightly simpler.
* time/time.h, bits/time.h, sysdeps/unix/sysv/linux/bits/time.h:
Remove all logic conditional on __need macros. Move all the
conditionally defined types to their own headers...
* time/bits/types/clock_t.h: Define clock_t here.
* time/bits/types/clockid_t.h: Define clockid_t here.
* time/bits/types/struct_itimerspec.h: Define struct itimerspec here.
* time/bits/types/struct_timespec.h: Define struct timespec here.
* time/bits/types/struct_timeval.h: Define struct timeval here.
* time/bits/types/struct_tm.h: Define struct tm here.
* time/bits/types/time_t.h: Define time_t here.
* time/bits/types/timer_t.h: Define timer_t here.
* time/Makefile: Install the new headers.
* bits/resource.h, io/fcntl.h, io/sys/poll.h, io/sys/stat.h
* io/utime.h, misc/sys/select.h, posix/sched.h, posix/sys/times.h
* posix/sys/types.h, resolv/netdb.h, rt/aio.h, rt/mqueue.h
* signal/signal.h, pthread/semaphore.h, sysdeps/nptl/pthread.h
* sysdeps/unix/sysv/linux/alpha/bits/resource.h
* sysdeps/unix/sysv/linux/alpha/sys/acct.h
* sysdeps/unix/sysv/linux/bits/resource.h
* sysdeps/unix/sysv/linux/bits/timex.h
* sysdeps/unix/sysv/linux/mips/bits/resource.h
* sysdeps/unix/sysv/linux/net/ppp_defs.h
* sysdeps/unix/sysv/linux/sparc/bits/resource.h
* sysdeps/unix/sysv/linux/sys/acct.h
* sysdeps/unix/sysv/linux/sys/timerfd.h
* sysvipc/sys/msg.h, sysvipc/sys/sem.h, sysvipc/sys/shm.h
* time/sys/time.h, time/sys/timeb.h
Use the new bits/types headers.
* include/time.h: Remove __need logic.
* include/bits/time.h
* include/bits/types/clock_t.h, include/bits/types/clockid_t.h
* include/bits/types/time_t.h, include/bits/types/timer_t.h
* include/bits/types/struct_itimerspec.h
* include/bits/types/struct_timespec.h
* include/bits/types/struct_timeval.h
* include/bits/types/struct_tm.h:
New wrapper headers.
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/* Copyright (C) 2002-2016 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, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _SEMAPHORE_H
|
|
#define _SEMAPHORE_H 1
|
|
|
|
#include <features.h>
|
|
#include <sys/types.h>
|
|
#ifdef __USE_XOPEN2K
|
|
# include <bits/types/struct_timespec.h>
|
|
#endif
|
|
|
|
/* Get the definition for sem_t. */
|
|
#include <bits/semaphore.h>
|
|
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/* Initialize semaphore object SEM to VALUE. If PSHARED then share it
|
|
with other processes. */
|
|
extern int sem_init (sem_t *__sem, int __pshared, unsigned int __value)
|
|
__THROW;
|
|
/* Free resources associated with semaphore object SEM. */
|
|
extern int sem_destroy (sem_t *__sem) __THROW;
|
|
|
|
/* Open a named semaphore NAME with open flags OFLAG. */
|
|
extern sem_t *sem_open (const char *__name, int __oflag, ...) __THROW;
|
|
|
|
/* Close descriptor for named semaphore SEM. */
|
|
extern int sem_close (sem_t *__sem) __THROW;
|
|
|
|
/* Remove named semaphore NAME. */
|
|
extern int sem_unlink (const char *__name) __THROW;
|
|
|
|
/* Wait for SEM being posted.
|
|
|
|
This function is a cancellation point and therefore not marked with
|
|
__THROW. */
|
|
extern int sem_wait (sem_t *__sem);
|
|
|
|
#ifdef __USE_XOPEN2K
|
|
/* Similar to `sem_wait' but wait only until ABSTIME.
|
|
|
|
This function is a cancellation point and therefore not marked with
|
|
__THROW. */
|
|
extern int sem_timedwait (sem_t *__restrict __sem,
|
|
const struct timespec *__restrict __abstime);
|
|
#endif
|
|
|
|
/* Test whether SEM is posted. */
|
|
extern int sem_trywait (sem_t *__sem) __THROWNL;
|
|
|
|
/* Post SEM. */
|
|
extern int sem_post (sem_t *__sem) __THROWNL;
|
|
|
|
/* Get current value of SEM and store it in *SVAL. */
|
|
extern int sem_getvalue (sem_t *__restrict __sem, int *__restrict __sval)
|
|
__THROW;
|
|
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* semaphore.h */
|