libc-lock.h

自己做的交叉编译工具！gcc-3.4.5,glibc-2.3.6在ubuntu8.04上做的面向kernel-2.6.28的交叉编译工具

  ++((pthread_mutex_t *)(lock))->__m_count;

# define __rtld_lock_default_unlock_recursive(lock) \
  --((pthread_mutex_t *)(lock))->__m_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_lock_lock_recursive (NAME)
#define __rtld_lock_unlock_recursive(NAME) __libc_lock_unlock_recursive (NAME)
#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 (__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))

/* 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))
weak_extern (BP_SYM (_pthread_cleanup_pop))
weak_extern (BP_SYM (_pthread_cleanup_push_defer))
weak_extern (BP_SYM (_pthread_cleanup_pop_restore))
# 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_cleanup_push
#  pragma weak _pthread_cleanup_pop
# endif
#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 */