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Name	Size	Mode	Actions
a.out.h	299	0644	edit dl rm
byteswap.h	5396	0644	edit dl rm
cmathcalls.h	4881	0644	edit dl rm
confname.h	23818	0644	edit dl rm
dirent.h	1609	0644	edit dl rm
dlfcn.h	2593	0644	edit dl rm
elfclass.h	426	0644	edit dl rm
endian.h	170	0644	edit dl rm
environments.h	3651	0644	edit dl rm
errno.h	2171	0644	edit dl rm
error.h	2762	0644	edit dl rm
fcntl.h	10426	0644	edit dl rm
fcntl2.h	5607	0644	edit dl rm
fenv.h	3064	0644	edit dl rm
fenvinline.h	190	0644	edit dl rm
huge_val.h	1941	0644	edit dl rm
huge_valf.h	1901	0644	edit dl rm
huge_vall.h	1183	0644	edit dl rm
in.h	7713	0644	edit dl rm
inf.h	1123	0644	edit dl rm
initspin.h	25	0644	edit dl rm
ioctl-types.h	2535	0644	edit dl rm
ioctls.h	4557	0644	edit dl rm
ipc.h	2127	0644	edit dl rm
ipctypes.h	1225	0644	edit dl rm
libc-lock.h	12844	0644	edit dl rm
libio-ldbl.h	1081	0644	edit dl rm
link.h	3620	0644	edit dl rm
locale.h	1378	0644	edit dl rm
local_lim.h	3273	0644	edit dl rm
mathcalls.h	11570	0644	edit dl rm
mathdef.h	2011	0644	edit dl rm
mathinline.h	2035	0644	edit dl rm
mman.h	4825	0644	edit dl rm
monetary-ldbl.h	1108	0644	edit dl rm
mqueue.h	1237	0644	edit dl rm
mqueue2.h	2186	0644	edit dl rm
msq.h	2623	0644	edit dl rm
nan.h	1641	0644	edit dl rm
netdb.h	1349	0644	edit dl rm
poll.h	2155	0644	edit dl rm
posix1_lim.h	4946	0644	edit dl rm
posix2_lim.h	2952	0644	edit dl rm
posix_opt.h	5853	0644	edit dl rm
printf-ldbl.h	1053	0644	edit dl rm
pthreadtypes.h	5763	0644	edit dl rm
resource.h	7182	0644	edit dl rm
sched.h	7491	0644	edit dl rm
select.h	2166	0644	edit dl rm
sem.h	2624	0644	edit dl rm
semaphore.h	1305	0644	edit dl rm
setjmp.h	1291	0644	edit dl rm
setjmp2.h	1752	0644	edit dl rm
shm.h	3601	0644	edit dl rm
sigaction.h	2919	0644	edit dl rm
sigcontext.h	3699	0644	edit dl rm
siginfo.h	9125	0644	edit dl rm
signum.h	3484	0644	edit dl rm
sigset.h	4652	0644	edit dl rm
sigstack.h	1595	0644	edit dl rm
sigthread.h	1747	0644	edit dl rm
sockaddr.h	1601	0644	edit dl rm
socket.h	14207	0644	edit dl rm
socket2.h	3101	0644	edit dl rm
stab.def	9101	0644	edit dl rm
stat.h	7790	0644	edit dl rm
statfs.h	2026	0644	edit dl rm
statvfs.h	3439	0644	edit dl rm
stdio-ldbl.h	3196	0644	edit dl rm
stdio-lock.h	2262	0644	edit dl rm
stdio.h	5654	0644	edit dl rm
stdio2.h	12652	0644	edit dl rm
stdio_lim.h	1440	0644	edit dl rm
stdlib-ldbl.h	1462	0644	edit dl rm
stdlib.h	5770	0644	edit dl rm
string.h	1185	0644	edit dl rm
string2.h	47734	0644	edit dl rm
string3.h	4629	0644	edit dl rm
syscall.h	14573	0644	edit dl rm
syslog-ldbl.h	1269	0644	edit dl rm
syslog-path.h	1122	0644	edit dl rm
syslog.h	1773	0644	edit dl rm
sys_errlist.h	1284	0644	edit dl rm
termios.h	5396	0644	edit dl rm
time.h	2866	0644	edit dl rm
types.h	7601	0644	edit dl rm
typesizes.h	2538	0644	edit dl rm
uio.h	1832	0644	edit dl rm
unistd.h	13517	0644	edit dl rm
ustat.h	1157	0644	edit dl rm
utmp.h	4098	0644	edit dl rm
utmpx.h	3564	0644	edit dl rm
utsname.h	1286	0644	edit dl rm
waitflags.h	1715	0644	edit dl rm
waitstatus.h	3639	0644	edit dl rm
wchar-ldbl.h	2583	0644	edit dl rm
wchar.h	1033	0644	edit dl rm
wchar2.h	20795	0644	edit dl rm
wordsize.h	175	0644	edit dl rm
xopen_lim.h	3837	0644	edit dl rm

Edit: /usr/include/bits/libc-lock.h (12844B)

/* libc-internal interface for mutex locks.  LinuxThreads version.
   Copyright (C) 1996,1997,1998,1999,2000,2001,2002,2003
   	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>

/* Mutex type.  */
#ifdef _IO_MTSAFE_IO
typedef pthread_mutex_t __libc_lock_t;
typedef struct { pthread_mutex_t mutex; } __libc_lock_recursive_t;
# ifdef __USE_UNIX98
typedef pthread_rwlock_t __libc_rwlock_t;
# else
typedef struct __libc_rwlock_opaque__ __libc_rwlock_t;
# endif
typedef __libc_lock_recursive_t __rtld_lock_recursive_t;
#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 __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

#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.  */
#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}

#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}

#if defined __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
#define __libc_maybe_call2(FUNC, ARGS, ELSE) __libc_maybe_call (__##FUNC, ARGS, ELSE)

/* Initialize the named lock variable, leaving it in a consistent, unlocked
   state.  */
#define __libc_lock_init(NAME) \
  (__libc_maybe_call2 (pthread_mutex_init, (&(NAME), NULL), 0))
#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.  */
#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);
#define __rtld_lock_init_recursive(NAME) \
  __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) \
  (__libc_maybe_call2 (pthread_mutex_destroy, (&(NAME)), 0));
#define __libc_rwlock_fini(NAME) \
  (__libc_maybe_call (__pthread_rwlock_destroy, (&(NAME)), 0));

/* Finalize recursive named lock.  */
#define __libc_lock_fini_recursive(NAME) __libc_lock_fini ((NAME).mutex)
#define __rtld_lock_fini_recursive(NAME) __libc_lock_fini_recursive (NAME)

/* Lock the named lock variable.  */
#define __libc_lock_lock(NAME) \
  (__libc_maybe_call2 (pthread_mutex_lock, (&(NAME)), 0));
#define __libc_rwlock_rdlock(NAME) \
  (__libc_maybe_call (__pthread_rwlock_rdlock, (&(NAME)), 0));
#define __libc_rwlock_wrlock(NAME) \
  (__libc_maybe_call (__pthread_rwlock_wrlock, (&(NAME)), 0));

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

/* Try to lock the named lock variable.  */
#define __libc_lock_trylock(NAME) \
  (__libc_maybe_call2 (pthread_mutex_trylock, (&(NAME)), 0))
#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.  */
#define __libc_lock_trylock_recursive(NAME) __libc_lock_trylock ((NAME).mutex)
#define __rtld_lock_trylock_recursive(NAME) \
  __libc_lock_trylock_recursive (NAME)

/* Unlock the named lock variable.  */
#define __libc_lock_unlock(NAME) \
  (__libc_maybe_call2 (pthread_mutex_unlock, (&(NAME)), 0));
#define __libc_rwlock_unlock(NAME) \
  (__libc_maybe_call (__pthread_rwlock_unlock, (&(NAME)), 0));

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

#define __rtld_lock_lock_recursive(NAME) __libc_lock_lock_recursive (NAME)
#define __rtld_lock_unlock_recursive(NAME) __libc_lock_unlock_recursive (NAME)

/* 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 (__pthread_once != NULL)						      \
      __pthread_once (&(ONCE_CONTROL), (INIT_FUNCTION));		      \
    else if ((ONCE_CONTROL) == PTHREAD_ONCE_INIT) {			      \
      INIT_FUNCTION ();							      \
      (ONCE_CONTROL) = 2;						      \
    }									      \
  } while (0)

/* Start critical region with cleanup.  */
#define __libc_cleanup_region_start(DOIT, FCT, ARG) \
  { struct _pthread_cleanup_buffer _buffer;				      \
    int _avail = (DOIT) && _pthread_cleanup_push_defer != NULL;		      \
    if (_avail) {							      \
      _pthread_cleanup_push_defer (&_buffer, (FCT), (ARG));		      \
    }

/* End critical region with cleanup.  */
#define __libc_cleanup_region_end(DOIT) \
    if (_avail) {							      \
      _pthread_cleanup_pop_restore (&_buffer, (DOIT));			      \
    }									      \
  }

/* Sometimes we have to exit the block in the middle.  */
#define __libc_cleanup_end(DOIT) \
    if (_avail) {							      \
      _pthread_cleanup_pop_restore (&_buffer, (DOIT));			      \
    }

#define __libc_cleanup_push(fct, arg) \
    { struct _pthread_cleanup_buffer _buffer; 				      \
    __libc_maybe_call (_pthread_cleanup_push, (&_buffer, (fct), (arg)), 0)

#define __libc_cleanup_pop(execute) \
    __libc_maybe_call (_pthread_cleanup_pop, (&_buffer, execute), 0);	      \
    }

/* Create thread-specific key.  */
#define __libc_key_create(KEY, DESTRUCTOR) \
  (__libc_maybe_call (__pthread_key_create, (KEY, DESTRUCTOR), 1))

/* Get thread-specific data.  */
#define __libc_getspecific(KEY) \
  (__libc_maybe_call (__pthread_getspecific, (KEY), NULL))

/* Set thread-specific data.  */
#define __libc_setspecific(KEY, VALUE) \
  (__libc_maybe_call (__pthread_setspecific, (KEY, VALUE), 0))

/* Register handlers to execute before and after `fork'.  */
#define __libc_atfork(PREPARE, PARENT, CHILD) \
  (__libc_maybe_call (__pthread_atfork, (PREPARE, PARENT, CHILD), 0))

__BEGIN_DECLS

extern void _pthread_cleanup_push_defer (struct _pthread_cleanup_buffer *__buffer,
                                         void (*__routine) (void *),
                                         void *__arg) __THROW;

extern void _pthread_cleanup_pop_restore (struct _pthread_cleanup_buffer *__buffer,
                                          int __execute) __THROW;

/* 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));

__END_DECLS

/* Make the pthread functions weak so that we can elide them from
   single-threaded processes.  */
#ifndef __NO_WEAK_PTHREAD_ALIASES
# 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_cleanup_push
# pragma weak _pthread_cleanup_pop
#endif

/* 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	/* bits/libc-lock.h */

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