+++ /dev/null
-/* libc-internal interface for mutex locks. LinuxThreads 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
-
-#include <pthread.h>
-#define __libc_lock_t pthread_mutex_t
-
-/* 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) \
- CLASS __libc_lock_t NAME;
-
-/* Define an initialized lock variable NAME with storage class CLASS. */
-#define __libc_lock_define_initialized(CLASS,NAME) \
- CLASS __libc_lock_t NAME = PTHREAD_MUTEX_INITIALIZER;
-
-/* Initialize the named lock variable, leaving it in a consistent, unlocked
- state. */
-#define __libc_lock_init(NAME) \
- (__pthread_mutex_init != NULL ? __pthread_mutex_init (&(NAME), NULL) : 0);
-
-/* Same as last but this time we initialize a recursive mutex. */
-#define __libc_lock_init_recursive(NAME) \
- do { \
- if (__pthread_mutex_init != NULL) \
- { \
- pthread_mutexattr_t __attr; \
- __pthread_mutexattr_init (&__attr); \
- __pthread_mutexattr_setkind_np (&__attr, PTHREAD_MUTEX_RECURSIVE_NP); \
- __pthread_mutex_init (&(NAME), &__attr); \
- __pthread_mutexattr_destroy (&__attr); \
- } \
- } while (0);
-
-/* 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) \
- (__pthread_mutex_destroy != NULL ? __pthread_mutex_destroy (&(NAME)) : 0);
-
-/* Lock the named lock variable. */
-#define __libc_lock_lock(NAME) \
- (__pthread_mutex_lock != NULL ? __pthread_mutex_lock (&(NAME)) : 0);
-
-/* Try to lock the named lock variable. */
-#define __libc_lock_trylock(NAME) \
- (__pthread_mutex_trylock != NULL ? __pthread_mutex_trylock (&(NAME)) : 0);
-
-/* Unlock the named lock variable. */
-#define __libc_lock_unlock(NAME) \
- (__pthread_mutex_unlock != NULL ? __pthread_mutex_unlock (&(NAME)) : 0);
-
-/* Start critical region with cleanup. */
-#define __libc_cleanup_region_start(FCT, ARG) \
- { struct _pthread_cleanup_buffer _buffer; \
- if (_pthread_cleanup_push_defer != NULL) { \
- _pthread_cleanup_push_defer (&_buffer, (FCT), (ARG)); \
- }
-
-/* End critical region with cleanup. */
-#define __libc_cleanup_region_end(DOIT) \
- if (_pthread_cleanup_push_defer != NULL) { \
- _pthread_cleanup_pop_restore (&_buffer, (DOIT)); \
- } \
- }
-
-/* Make the pthread functions weak so that we can elide them from
- single-threaded processes. */
-#pragma weak __pthread_mutex_init
-#pragma weak __pthread_mutex_destroy
-#pragma weak __pthread_mutex_lock
-#pragma weak __pthread_mutex_trylock
-#pragma weak __pthread_mutex_unlock
-#pragma weak __pthread_mutexattr_init
-#pragma weak __pthread_mutexattr_destroy
-#pragma weak __pthread_mutexattr_setkind_np
-#pragma weak __pthread_key_create
-#pragma weak __pthread_setspecific
-#pragma weak __pthread_getspecific
-#pragma weak __pthread_initialize
-#pragma weak _pthread_cleanup_push_defer
-#pragma weak _pthread_cleanup_pop_restore
-
-/* We need portable names for some functions. E.g., when they are
- used as argument to __libc_cleanup_region_start. */
-#define __libc_mutex_unlock __pthread_mutex_unlock
-
-#endif /* libc-lock.h */
-
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