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Diffstat (limited to 'bits/libc-lock.h')
| -rw-r--r-- | bits/libc-lock.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/bits/libc-lock.h b/bits/libc-lock.h new file mode 100644 index 0000000000..c24dcd047a --- /dev/null +++ b/bits/libc-lock.h @@ -0,0 +1,109 @@ +/* libc-internal interface for mutex locks. Stub version. + Copyright (C) 1996, 1997 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 _BITS_LIBC_LOCK_H +#define _BITS_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) + +/* Define an initialized recursive lock variable NAME with storage + class CLASS. */ +#define __libc_lock_define_initialized_recursive(CLASS,NAME) + +/* Initialize the named lock variable, leaving it in a consistent, unlocked + state. */ +#define __libc_lock_init(NAME) + +/* Same as last but this time we initialize a recursive mutex. */ +#define __libc_lock_init_recursive(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) + +/* Finalize recursive named lock. */ +#define __libc_lock_fini_recursive(NAME) + +/* Lock the named lock variable. */ +#define __libc_lock_lock(NAME) + +/* Lock the recursive named lock variable. */ +#define __libc_lock_lock_recursive(NAME) + +/* Try to lock the named lock variable. */ +#define __libc_lock_trylock(NAME) 0 + +/* Try to lock the recursive named lock variable. */ +#define __libc_lock_trylock_recursive(NAME) 0 + +/* Unlock the named lock variable. */ +#define __libc_lock_unlock(NAME) + +/* Unlock the recursive named lock variable. */ +#define __libc_lock_unlock_recursive(NAME) + + +/* Define once control variable. */ +#define __libc_once_define(CLASS, NAME) CLASS int NAME = 0 + +/* Call handler iff the first call. */ +#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \ + do { \ + if ((ONCE_CONTROL) == 0) { \ + INIT_FUNCTION (); \ + (ONCE_CONTROL) = 1; \ + } \ + } while (0) + + +/* Start critical region with cleanup. */ +#define __libc_cleanup_region_start(FCT, ARG) + +/* End critical region with cleanup. */ +#define __libc_cleanup_region_end(DOIT) + + +/* We need portable names for some of the functions. */ +#define __libc_mutex_unlock + +/* Type for key of thread specific data. */ +typedef int __libc_key_t; + +/* Create key for thread specific data. */ +#define __libc_key_create(KEY,DEST) -1 + +/* Set thread-specific data associated with KEY to VAL. */ +#define __libc_setspecific(KEY,VAL) -1 + +/* Get thread-specific data associated with KEY. */ +#define __libc_getspecific(KEY) 0 + +#endif /* bits/libc-lock.h */ |