224a12bcb2
argument type, for 2000-02-22 change in signal/signal.h declaration. * sysdeps/generic/getdents64.c (__getdirentries64): Renamed to getdirentries64 (no __), since the Linux implementation has no __ name, and there is no declaration for the __ name. * sysdeps/mach/bits/libc-lock.h (__libc_cleanup_end): New macro. * sysdeps/mach/hurd/Makefile ($(common-objpfx)errnos.d): Tighten up sed regexp so as not to break directory names including /../ within. * sysdeps/unix/bsd/bits/waitflags.h: File removed. The sysdeps/generic file is right for BSD. This file was in fact the Hurd file, but the only difference was the WNOREAP flag that was never actually implemented or used anywhere.
138 lines
5 KiB
C
138 lines
5 KiB
C
/* libc-internal interface for mutex locks. Mach cthreads version.
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Copyright (C) 1996,97,98,2000 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 not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _BITS_LIBC_LOCK_H
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#define _BITS_LIBC_LOCK_H 1
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#ifdef _LIBC
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#include <cthreads.h>
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#define __libc_lock_t struct mutex
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#else
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typedef struct __libc_lock_opaque__ __libc_lock_t;
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#endif
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/* Type for key of thread specific data. */
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typedef cthread_key_t __libc_key_t;
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/* Define a lock variable NAME with storage class CLASS. The lock must be
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initialized with __libc_lock_init before it can be used (or define it
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with __libc_lock_define_initialized, below). Use `extern' for CLASS to
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declare a lock defined in another module. In public structure
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definitions you must use a pointer to the lock structure (i.e., NAME
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begins with a `*'), because its storage size will not be known outside
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of libc. */
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#define __libc_lock_define(CLASS,NAME) \
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CLASS __libc_lock_t NAME;
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/* Define an initialized lock variable NAME with storage class CLASS. */
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#define __libc_lock_define_initialized(CLASS,NAME) \
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CLASS __libc_lock_t NAME = MUTEX_INITIALIZER;
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/* Initialize the named lock variable, leaving it in a consistent, unlocked
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state. */
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#define __libc_lock_init(NAME) __mutex_init (&(NAME))
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/* Finalize the named lock variable, which must be locked. It cannot be
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used again until __libc_lock_init is called again on it. This must be
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called on a lock variable before the containing storage is reused. */
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#define __libc_lock_fini(NAME) __mutex_unlock (&(NAME))
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/* Lock the named lock variable. */
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#define __libc_lock_lock(NAME) __mutex_lock (&(NAME))
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/* Lock the named lock variable. */
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#define __libc_lock_trylock(NAME) (!__mutex_trylock (&(NAME)))
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/* Unlock the named lock variable. */
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#define __libc_lock_unlock(NAME) __mutex_unlock (&(NAME))
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/* XXX for now */
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#define __libc_rwlock_define __libc_lock_define
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#define __libc_rwlock_define_initialized __libc_lock_define_initialized
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#define __libc_rwlock_init __libc_lock_init
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#define __libc_rwlock_fini __libc_lock_fini
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#define __libc_rwlock_rdlock __libc_lock_lock
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#define __libc_rwlock_wrlock __libc_lock_lock
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#define __libc_rwlock_tryrdlock __libc_lock_trylock
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#define __libc_rwlock_trywrlock __libc_lock_trylock
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#define __libc_rwlock_unlock __libc_lock_unlock
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/* Start a critical region with a cleanup function */
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#define __libc_cleanup_region_start(FCT, ARG) \
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{ \
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typeof (FCT) __save_FCT = FCT; \
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typeof (ARG) __save_ARG = ARG; \
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/* close brace is in __libc_cleanup_region_end below. */
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/* End a critical region started with __libc_cleanup_region_start. */
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#define __libc_cleanup_region_end(DOIT) \
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if (DOIT) \
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(*__save_FCT)(__save_ARG); \
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}
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/* Sometimes we have to exit the block in the middle. */
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#define __libc_cleanup_end(DOIT) \
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if (DOIT) \
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(*__save_FCT)(__save_ARG); \
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/* Use mutexes as once control variables. */
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struct __libc_once
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{
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__libc_lock_t lock;
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int done;
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};
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#define __libc_once_define(CLASS,NAME) \
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CLASS struct __libc_once NAME = { MUTEX_INITIALIZER, 0 }
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/* Call handler iff the first call. */
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#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
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do { \
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__libc_lock_lock (ONCE_CONTROL.lock); \
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if (!ONCE_CONTROL.done) \
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(INIT_FUNCTION) (); \
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ONCE_CONTROL.done = 1; \
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__libc_lock_unlock (ONCE_CONTROL.lock); \
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} while (0)
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#ifdef _LIBC
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/* We need portable names for some functions. E.g., when they are
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used as argument to __libc_cleanup_region_start. */
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#define __libc_mutex_unlock __mutex_unlock
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#endif
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#define __libc_key_create(KEY,DEST) cthread_keycreate (KEY)
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#define __libc_setspecific(KEY,VAL) cthread_setspecific (KEY, VAL)
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void *__libc_getspecific (__libc_key_t key);
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/* XXX until cthreads supports recursive locks */
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#define __libc_lock_define_initialized_recursive __libc_lock_define_initialized
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#define __libc_lock_init_recursive __libc_lock_init
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#define __libc_lock_fini_recursive __libc_lock_fini
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#define __libc_lock_trylock_recursive __libc_lock_trylock
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#define __libc_lock_unlock_recursive __libc_lock_unlock
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#define __libc_lock_lock_recursive __libc_lock_lock
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#endif /* bits/libc-lock.h */
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