[thirdparty/glibc.git] / sysdeps / stub / libc-lock.h

/* libc-internal interface for mutex locks.  Stub version.
   Copyright (C) 1996 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 Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#ifndef _LIBC_LOCK_H
#define _LIBC_LOCK_H 1


/* Define a lock variable NAME with storage class CLASS.  The lock must be
   initialized with __libc_lock_init before it can be used (or define it
   with __libc_lock_define_initialized, below).  Use `extern' for CLASS to
   declare a lock defined in another module.  In public structure
   definitions you must use a pointer to the lock structure (i.e., NAME
   begins with a `*'), because its storage size will not be known outside
   of libc.  */
#define __libc_lock_define(CLASS,NAME)

/* Define an initialized lock variable NAME with storage class CLASS.  */
#define __libc_lock_define_initialized(CLASS,NAME)

/* Initialize the named lock variable, leaving it in a consistent, unlocked
   state.  */
#define __libc_lock_init(NAME)

/* Finalize the named lock variable, which must be locked.  It cannot be
   used again until __libc_lock_init is called again on it.  This must be
   called on a lock variable before the containing storage is reused.  */
#define __libc_lock_fini(NAME)

/* Lock the named lock variable.  */
#define __libc_lock_lock(NAME)

/* Unlock the named lock variable.  */
#define __libc_lock_unlock(NAME)

/* Start critical region with cleanup.  */
#define __libc_cleanup_region_start(FCT, ARG)

/* End critical region with cleanup.  */
#define __libc_cleanup_region_end(DOIT)


#endif	/* libc-lock.h */
Commit	Line	Data
3d3ac840	1	/* libc-internal interface for mutex locks. Stub version.
54d79e99 UD	2	Copyright (C) 1996 Free Software Foundation, Inc.
54d79e99 UD	3	This file is part of the GNU C Library.
3d3ac840	4
54d79e99 UD	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Library General Public License as
	7	published by the Free Software Foundation; either version 2 of the
	8	License, or (at your option) any later version.
3d3ac840	9
54d79e99 UD	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Library General Public License for more details.
3d3ac840	14
54d79e99 UD	15	You should have received a copy of the GNU Library General Public
	16	License along with the GNU C Library; see the file COPYING.LIB. If not,
	17	write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	18	Boston, MA 02111-1307, USA. */
3d3ac840 RM	19
	20	#ifndef _LIBC_LOCK_H
	21	#define _LIBC_LOCK_H 1
	22
	23
	24	/* Define a lock variable NAME with storage class CLASS. The lock must be
	25	initialized with __libc_lock_init before it can be used (or define it
	26	with __libc_lock_define_initialized, below). Use `extern' for CLASS to
c1509239	27	declare a lock defined in another module. In public structure
c4029823 UD	28	definitions you must use a pointer to the lock structure (i.e., NAME
	29	begins with a `*'), because its storage size will not be known outside
	30	of libc. */
3d3ac840 RM	31	#define __libc_lock_define(CLASS,NAME)
	32
	33	/* Define an initialized lock variable NAME with storage class CLASS. */
	34	#define __libc_lock_define_initialized(CLASS,NAME)
	35
	36	/* Initialize the named lock variable, leaving it in a consistent, unlocked
	37	state. */
	38	#define __libc_lock_init(NAME)
	39
c1509239 RM	40	/* Finalize the named lock variable, which must be locked. It cannot be
	41	used again until __libc_lock_init is called again on it. This must be
	42	called on a lock variable before the containing storage is reused. */
	43	#define __libc_lock_fini(NAME)
	44
3d3ac840 RM	45	/* Lock the named lock variable. */
	46	#define __libc_lock_lock(NAME)
	47
	48	/* Unlock the named lock variable. */
	49	#define __libc_lock_unlock(NAME)
	50
edf5b2d7 UD	51	/* Start critical region with cleanup. */
	52	#define __libc_cleanup_region_start(FCT, ARG)
	53
	54	/* End critical region with cleanup. */
	55	#define __libc_cleanup_region_end(DOIT)
	56
3d3ac840 RM	57
3d3ac840 RM	58	#endif /* libc-lock.h */