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Diffstat (limited to 'libpthread/nptl/sysdeps/pthread/bits/libc-lock.h')
-rw-r--r--libpthread/nptl/sysdeps/pthread/bits/libc-lock.h568
1 files changed, 0 insertions, 568 deletions
diff --git a/libpthread/nptl/sysdeps/pthread/bits/libc-lock.h b/libpthread/nptl/sysdeps/pthread/bits/libc-lock.h
deleted file mode 100644
index 795caa713..000000000
--- a/libpthread/nptl/sysdeps/pthread/bits/libc-lock.h
+++ /dev/null
@@ -1,568 +0,0 @@
-/* libc-internal interface for mutex locks. NPTL version.
- Copyright (C) 1996-2001, 2002, 2003, 2005 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; 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
-
-#include <pthread.h>
-#define __need_NULL
-#include <stddef.h>
-
-
-/* Fortunately Linux now has a mean to do locking which is realtime
- safe without the aid of the thread library. We also need no fancy
- options like error checking mutexes etc. We only need simple
- locks, maybe recursive. This can be easily and cheaply implemented
- using futexes. We will use them everywhere except in ld.so since
- ld.so might be used on old kernels with a different libc.so. */
-#ifdef _LIBC
-# include <lowlevellock.h>
-# include <tls.h>
-# include <pthread-functions.h>
-#endif
-
-/* Mutex type. */
-#if defined _LIBC || defined _IO_MTSAFE_IO
-# if (defined NOT_IN_libc && !defined IS_IN_libpthread) || !defined _LIBC
-typedef pthread_mutex_t __libc_lock_t;
-typedef struct { pthread_mutex_t mutex; } __libc_lock_recursive_t;
-# else
-typedef int __libc_lock_t;
-typedef struct { int lock; int cnt; void *owner; } __libc_lock_recursive_t;
-# endif
-typedef struct { pthread_mutex_t mutex; } __rtld_lock_recursive_t;
-# ifdef __USE_UNIX98
-typedef pthread_rwlock_t __libc_rwlock_t;
-# else
-typedef struct __libc_rwlock_opaque__ __libc_rwlock_t;
-# endif
-#else
-typedef struct __libc_lock_opaque__ __libc_lock_t;
-typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
-typedef struct __libc_rwlock_opaque__ __libc_rwlock_t;
-#endif
-
-/* Type for key to thread-specific data. */
-typedef pthread_key_t __libc_key_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 __libc_rwlock_define(CLASS,NAME) \
- CLASS __libc_rwlock_t NAME;
-#define __libc_lock_define_recursive(CLASS,NAME) \
- CLASS __libc_lock_recursive_t NAME;
-#define __rtld_lock_define_recursive(CLASS,NAME) \
- CLASS __rtld_lock_recursive_t NAME;
-
-/* Define an initialized lock variable NAME with storage class CLASS.
-
- For the C library we take a deeper look at the initializer. For
- this implementation all fields are initialized to zero. Therefore
- we don't initialize the variable which allows putting it into the
- BSS section. (Except on PA-RISC and other odd architectures, where
- initialized locks must be set to one due to the lack of normal
- atomic operations.) */
-
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-# if LLL_LOCK_INITIALIZER == 0
-# define __libc_lock_define_initialized(CLASS,NAME) \
- CLASS __libc_lock_t NAME;
-# else
-# define __libc_lock_define_initialized(CLASS,NAME) \
- CLASS __libc_lock_t NAME = LLL_LOCK_INITIALIZER;
-# endif
-#else
-# if __LT_SPINLOCK_INIT == 0
-# define __libc_lock_define_initialized(CLASS,NAME) \
- CLASS __libc_lock_t NAME;
-# else
-# define __libc_lock_define_initialized(CLASS,NAME) \
- CLASS __libc_lock_t NAME = PTHREAD_MUTEX_INITIALIZER;
-# endif
-#endif
-
-#define __libc_rwlock_define_initialized(CLASS,NAME) \
- CLASS __libc_rwlock_t NAME = PTHREAD_RWLOCK_INITIALIZER;
-
-/* Define an initialized recursive lock variable NAME with storage
- class CLASS. */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-# if LLL_LOCK_INITIALIZER == 0
-# define __libc_lock_define_initialized_recursive(CLASS,NAME) \
- CLASS __libc_lock_recursive_t NAME;
-# else
-# define __libc_lock_define_initialized_recursive(CLASS,NAME) \
- CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER;
-# endif
-# define _LIBC_LOCK_RECURSIVE_INITIALIZER \
- { LLL_LOCK_INITIALIZER, 0, NULL }
-#else
-# define __libc_lock_define_initialized_recursive(CLASS,NAME) \
- CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER;
-# define _LIBC_LOCK_RECURSIVE_INITIALIZER \
- {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP}
-#endif
-
-#define __rtld_lock_define_initialized_recursive(CLASS,NAME) \
- CLASS __rtld_lock_recursive_t NAME = _RTLD_LOCK_RECURSIVE_INITIALIZER;
-#define _RTLD_LOCK_RECURSIVE_INITIALIZER \
- {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP}
-
-#define __rtld_lock_initialize(NAME) \
- (void) ((NAME) = (__rtld_lock_recursive_t) _RTLD_LOCK_RECURSIVE_INITIALIZER)
-
-/* If we check for a weakly referenced symbol and then perform a
- normal jump to it te code generated for some platforms in case of
- PIC is unnecessarily slow. What would happen is that the function
- is first referenced as data and then it is called indirectly
- through the PLT. We can make this a direct jump. */
-#ifdef __PIC__
-# define __libc_maybe_call(FUNC, ARGS, ELSE) \
- (__extension__ ({ __typeof (FUNC) *_fn = (FUNC); \
- _fn != NULL ? (*_fn) ARGS : ELSE; }))
-#else
-# define __libc_maybe_call(FUNC, ARGS, ELSE) \
- (FUNC != NULL ? FUNC ARGS : ELSE)
-#endif
-
-/* Call thread functions through the function pointer table. */
-#if defined SHARED && !defined NOT_IN_libc
-# define PTF(NAME) __libc_pthread_functions.ptr_##NAME
-# define __libc_ptf_call(FUNC, ARGS, ELSE) \
- (PTF(FUNC) != NULL ? PTF(FUNC) ARGS : ELSE)
-#else
-# define PTF(NAME) NAME
-# define __libc_ptf_call(FUNC, ARGS, ELSE) \
- __libc_maybe_call (FUNC, ARGS, ELSE)
-#endif
-
-
-/* Initialize the named lock variable, leaving it in a consistent, unlocked
- state. */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-# define __libc_lock_init(NAME) ((NAME) = LLL_LOCK_INITIALIZER, 0)
-#else
-# define __libc_lock_init(NAME) \
- __libc_maybe_call (__pthread_mutex_init, (&(NAME), NULL), 0)
-#endif
-#define __libc_rwlock_init(NAME) \
- __libc_maybe_call (__pthread_rwlock_init, (&(NAME), NULL), 0)
-
-/* Same as last but this time we initialize a recursive mutex. */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-# define __libc_lock_init_recursive(NAME) \
- ((NAME) = (__libc_lock_recursive_t) _LIBC_LOCK_RECURSIVE_INITIALIZER, 0)
-#else
-# define __libc_lock_init_recursive(NAME) \
- do { \
- if (__pthread_mutex_init != NULL) \
- { \
- pthread_mutexattr_t __attr; \
- __pthread_mutexattr_init (&__attr); \
- __pthread_mutexattr_settype (&__attr, PTHREAD_MUTEX_RECURSIVE_NP); \
- __pthread_mutex_init (&(NAME).mutex, &__attr); \
- __pthread_mutexattr_destroy (&__attr); \
- } \
- } while (0)
-#endif
-
-#define __rtld_lock_init_recursive(NAME) \
- do { \
- if (__pthread_mutex_init != NULL) \
- { \
- pthread_mutexattr_t __attr; \
- __pthread_mutexattr_init (&__attr); \
- __pthread_mutexattr_settype (&__attr, PTHREAD_MUTEX_RECURSIVE_NP); \
- __pthread_mutex_init (&(NAME).mutex, &__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. */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-# define __libc_lock_fini(NAME) ((void) 0)
-#else
-# define __libc_lock_fini(NAME) \
- __libc_maybe_call (__pthread_mutex_destroy, (&(NAME)), 0)
-#endif
-#define __libc_rwlock_fini(NAME) \
- __libc_maybe_call (__pthread_rwlock_destroy, (&(NAME)), 0)
-
-/* Finalize recursive named lock. */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-# define __libc_lock_fini_recursive(NAME) ((void) 0)
-#else
-# define __libc_lock_fini_recursive(NAME) \
- __libc_maybe_call (__pthread_mutex_destroy, (&(NAME)), 0)
-#endif
-
-/* Lock the named lock variable. */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-# define __libc_lock_lock(NAME) \
- ({ lll_lock (NAME); 0; })
-#else
-# define __libc_lock_lock(NAME) \
- __libc_maybe_call (__pthread_mutex_lock, (&(NAME)), 0)
-#endif
-#define __libc_rwlock_rdlock(NAME) \
- __libc_ptf_call (__pthread_rwlock_rdlock, (&(NAME)), 0)
-#define __libc_rwlock_wrlock(NAME) \
- __libc_ptf_call (__pthread_rwlock_wrlock, (&(NAME)), 0)
-
-/* Lock the recursive named lock variable. */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-# define __libc_lock_lock_recursive(NAME) \
- do { \
- void *self = THREAD_SELF; \
- if ((NAME).owner != self) \
- { \
- lll_lock ((NAME).lock); \
- (NAME).owner = self; \
- } \
- ++(NAME).cnt; \
- } while (0)
-#else
-# define __libc_lock_lock_recursive(NAME) \
- __libc_maybe_call (__pthread_mutex_lock, (&(NAME).mutex), 0)
-#endif
-
-/* Try to lock the named lock variable. */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-# define __libc_lock_trylock(NAME) \
- lll_trylock (NAME)
-#else
-# define __libc_lock_trylock(NAME) \
- __libc_maybe_call (__pthread_mutex_trylock, (&(NAME)), 0)
-#endif
-#define __libc_rwlock_tryrdlock(NAME) \
- __libc_maybe_call (__pthread_rwlock_tryrdlock, (&(NAME)), 0)
-#define __libc_rwlock_trywrlock(NAME) \
- __libc_maybe_call (__pthread_rwlock_trywrlock, (&(NAME)), 0)
-
-/* Try to lock the recursive named lock variable. */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-# define __libc_lock_trylock_recursive(NAME) \
- ({ \
- int result = 0; \
- void *self = THREAD_SELF; \
- if ((NAME).owner != self) \
- { \
- if (lll_trylock ((NAME).lock) == 0) \
- { \
- (NAME).owner = self; \
- (NAME).cnt = 1; \
- } \
- else \
- result = EBUSY; \
- } \
- else \
- ++(NAME).cnt; \
- result; \
- })
-#else
-# define __libc_lock_trylock_recursive(NAME) \
- __libc_maybe_call (__pthread_mutex_trylock, (&(NAME)), 0)
-#endif
-
-#define __rtld_lock_trylock_recursive(NAME) \
- __libc_maybe_call (__pthread_mutex_trylock, (&(NAME).mutex), 0)
-
-/* Unlock the named lock variable. */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-# define __libc_lock_unlock(NAME) \
- lll_unlock (NAME)
-#else
-# define __libc_lock_unlock(NAME) \
- __libc_maybe_call (__pthread_mutex_unlock, (&(NAME)), 0)
-#endif
-#define __libc_rwlock_unlock(NAME) \
- __libc_ptf_call (__pthread_rwlock_unlock, (&(NAME)), 0)
-
-/* Unlock the recursive named lock variable. */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
-/* We do no error checking here. */
-# define __libc_lock_unlock_recursive(NAME) \
- do { \
- if (--(NAME).cnt == 0) \
- { \
- (NAME).owner = NULL; \
- lll_unlock ((NAME).lock); \
- } \
- } while (0)
-#else
-# define __libc_lock_unlock_recursive(NAME) \
- __libc_maybe_call (__pthread_mutex_unlock, (&(NAME)), 0)
-#endif
-
-#if defined _LIBC && defined SHARED
-# define __rtld_lock_default_lock_recursive(lock) \
- ++((pthread_mutex_t *)(lock))->__data.__count;
-
-# define __rtld_lock_default_unlock_recursive(lock) \
- --((pthread_mutex_t *)(lock))->__data.__count;
-
-# define __rtld_lock_lock_recursive(NAME) \
- GL(dl_rtld_lock_recursive) (&(NAME).mutex)
-
-# define __rtld_lock_unlock_recursive(NAME) \
- GL(dl_rtld_unlock_recursive) (&(NAME).mutex)
-#else
-# define __rtld_lock_lock_recursive(NAME) \
- __libc_maybe_call (__pthread_mutex_lock, (&(NAME).mutex), 0)
-
-# define __rtld_lock_unlock_recursive(NAME) \
- __libc_maybe_call (__pthread_mutex_unlock, (&(NAME).mutex), 0)
-#endif
-
-/* Define once control variable. */
-#if PTHREAD_ONCE_INIT == 0
-/* Special case for static variables where we can avoid the initialization
- if it is zero. */
-# define __libc_once_define(CLASS, NAME) \
- CLASS pthread_once_t NAME
-#else
-# define __libc_once_define(CLASS, NAME) \
- CLASS pthread_once_t NAME = PTHREAD_ONCE_INIT
-#endif
-
-/* Call handler iff the first call. */
-#define __libc_once(ONCE_CONTROL, INIT_FUNCTION) \
- do { \
- if (PTF(__pthread_once) != NULL) \
- PTF(__pthread_once) (&(ONCE_CONTROL), INIT_FUNCTION); \
- else if ((ONCE_CONTROL) == PTHREAD_ONCE_INIT) { \
- INIT_FUNCTION (); \
- (ONCE_CONTROL) |= 2; \
- } \
- } while (0)
-
-
-/* Note that for I/O cleanup handling we are using the old-style
- cancel handling. It does not have to be integrated with C++ snce
- no C++ code is called in the middle. The old-style handling is
- faster and the support is not going away. */
-extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
- void (*routine) (void *), void *arg);
-extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
- int execute);
-extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *buffer,
- void (*routine) (void *), void *arg);
-extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *buffer,
- int execute);
-
-/* Start critical region with cleanup. */
-#define __libc_cleanup_region_start(DOIT, FCT, ARG) \
- { struct _pthread_cleanup_buffer _buffer; \
- int _avail; \
- if (DOIT) { \
- _avail = PTF(_pthread_cleanup_push_defer) != NULL; \
- if (_avail) { \
- PTF(_pthread_cleanup_push_defer) (&_buffer, FCT, ARG); \
- } else { \
- _buffer.__routine = (FCT); \
- _buffer.__arg = (ARG); \
- } \
- } else { \
- _avail = 0; \
- }
-
-/* End critical region with cleanup. */
-#define __libc_cleanup_region_end(DOIT) \
- if (_avail) { \
- PTF(_pthread_cleanup_pop_restore) (&_buffer, DOIT); \
- } else if (DOIT) \
- _buffer.__routine (_buffer.__arg); \
- }
-
-/* Sometimes we have to exit the block in the middle. */
-#define __libc_cleanup_end(DOIT) \
- if (_avail) { \
- PTF(_pthread_cleanup_pop_restore) (&_buffer, DOIT); \
- } else if (DOIT) \
- _buffer.__routine (_buffer.__arg)
-
-
-/* Normal cleanup handling, based on C cleanup attribute. */
-extern __inline void
-__libc_cleanup_routine (struct __pthread_cleanup_frame *f)
-{
- if (f->__do_it)
- f->__cancel_routine (f->__cancel_arg);
-}
-
-#define __libc_cleanup_push(fct, arg) \
- do { \
- struct __pthread_cleanup_frame __clframe \
- __attribute__ ((__cleanup__ (__libc_cleanup_routine))) \
- = { .__cancel_routine = (fct), .__cancel_arg = (arg), \
- .__do_it = 1 };
-
-#define __libc_cleanup_pop(execute) \
- __clframe.__do_it = (execute); \
- } while (0)
-
-
-/* Create thread-specific key. */
-#define __libc_key_create(KEY, DESTRUCTOR) \
- __libc_ptf_call (__pthread_key_create, (KEY, DESTRUCTOR), 1)
-
-/* Get thread-specific data. */
-#define __libc_getspecific(KEY) \
- __libc_ptf_call (__pthread_getspecific, (KEY), NULL)
-
-/* Set thread-specific data. */
-#define __libc_setspecific(KEY, VALUE) \
- __libc_ptf_call (__pthread_setspecific, (KEY, VALUE), 0)
-
-
-/* Register handlers to execute before and after `fork'. Note that the
- last parameter is NULL. The handlers registered by the libc are
- never removed so this is OK. */
-#define __libc_atfork(PREPARE, PARENT, CHILD) \
- __register_atfork (PREPARE, PARENT, CHILD, NULL)
-extern int __register_atfork (void (*__prepare) (void),
- void (*__parent) (void),
- void (*__child) (void),
- void *__dso_handle);
-
-/* Functions that are used by this file and are internal to the GNU C
- library. */
-
-extern int __pthread_mutex_init (pthread_mutex_t *__mutex,
- __const pthread_mutexattr_t *__mutex_attr);
-
-extern int __pthread_mutex_destroy (pthread_mutex_t *__mutex);
-
-extern int __pthread_mutex_trylock (pthread_mutex_t *__mutex);
-
-extern int __pthread_mutex_lock (pthread_mutex_t *__mutex);
-
-extern int __pthread_mutex_unlock (pthread_mutex_t *__mutex);
-
-extern int __pthread_mutexattr_init (pthread_mutexattr_t *__attr);
-
-extern int __pthread_mutexattr_destroy (pthread_mutexattr_t *__attr);
-
-extern int __pthread_mutexattr_settype (pthread_mutexattr_t *__attr,
- int __kind);
-
-#ifdef __USE_UNIX98
-extern int __pthread_rwlock_init (pthread_rwlock_t *__rwlock,
- __const pthread_rwlockattr_t *__attr);
-
-extern int __pthread_rwlock_destroy (pthread_rwlock_t *__rwlock);
-
-extern int __pthread_rwlock_rdlock (pthread_rwlock_t *__rwlock);
-
-extern int __pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock);
-
-extern int __pthread_rwlock_wrlock (pthread_rwlock_t *__rwlock);
-
-extern int __pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock);
-
-extern int __pthread_rwlock_unlock (pthread_rwlock_t *__rwlock);
-#endif
-
-extern int __pthread_key_create (pthread_key_t *__key,
- void (*__destr_function) (void *));
-
-extern int __pthread_setspecific (pthread_key_t __key,
- __const void *__pointer);
-
-extern void *__pthread_getspecific (pthread_key_t __key);
-
-extern int __pthread_once (pthread_once_t *__once_control,
- void (*__init_routine) (void));
-
-extern int __pthread_atfork (void (*__prepare) (void),
- void (*__parent) (void),
- void (*__child) (void));
-
-
-
-/* Make the pthread functions weak so that we can elide them from
- single-threaded processes. */
-#ifndef __NO_WEAK_PTHREAD_ALIASES
-# ifdef weak_extern
-# if _LIBC
-# include <bp-sym.h>
-# else
-# define BP_SYM (sym) sym
-# endif
-weak_extern (BP_SYM (__pthread_mutex_init))
-weak_extern (BP_SYM (__pthread_mutex_destroy))
-weak_extern (BP_SYM (__pthread_mutex_lock))
-weak_extern (BP_SYM (__pthread_mutex_trylock))
-weak_extern (BP_SYM (__pthread_mutex_unlock))
-weak_extern (BP_SYM (__pthread_mutexattr_init))
-weak_extern (BP_SYM (__pthread_mutexattr_destroy))
-weak_extern (BP_SYM (__pthread_mutexattr_settype))
-weak_extern (BP_SYM (__pthread_rwlock_init))
-weak_extern (BP_SYM (__pthread_rwlock_destroy))
-weak_extern (BP_SYM (__pthread_rwlock_rdlock))
-weak_extern (BP_SYM (__pthread_rwlock_tryrdlock))
-weak_extern (BP_SYM (__pthread_rwlock_wrlock))
-weak_extern (BP_SYM (__pthread_rwlock_trywrlock))
-weak_extern (BP_SYM (__pthread_rwlock_unlock))
-weak_extern (BP_SYM (__pthread_key_create))
-weak_extern (BP_SYM (__pthread_setspecific))
-weak_extern (BP_SYM (__pthread_getspecific))
-weak_extern (BP_SYM (__pthread_once))
-weak_extern (__pthread_initialize)
-weak_extern (__pthread_atfork)
-weak_extern (BP_SYM (_pthread_cleanup_push_defer))
-weak_extern (BP_SYM (_pthread_cleanup_pop_restore))
-weak_extern (BP_SYM (pthread_setcancelstate))
-# else
-# 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_settype
-# pragma weak __pthread_rwlock_destroy
-# pragma weak __pthread_rwlock_rdlock
-# pragma weak __pthread_rwlock_tryrdlock
-# pragma weak __pthread_rwlock_wrlock
-# pragma weak __pthread_rwlock_trywrlock
-# pragma weak __pthread_rwlock_unlock
-# pragma weak __pthread_key_create
-# pragma weak __pthread_setspecific
-# pragma weak __pthread_getspecific
-# pragma weak __pthread_once
-# pragma weak __pthread_initialize
-# pragma weak __pthread_atfork
-# pragma weak _pthread_cleanup_push_defer
-# pragma weak _pthread_cleanup_pop_restore
-# pragma weak pthread_setcancelstate
-# endif
-#endif
-
-#endif /* bits/libc-lock.h */