pthread所有结构类型

/* Copyright (C) 2002,2003,2004,2005,2006,2007 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <[email protected]>, 2002.

 

   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; if not, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

 

#ifndef _BITS_PTHREADTYPES_H

#define _BITS_PTHREADTYPES_H 1

 

#include <bits/wordsize.h>

 

#if __WORDSIZE == 64

# define __SIZEOF_PTHREAD_ATTR_T 56

# define __SIZEOF_PTHREAD_MUTEX_T 40

# define __SIZEOF_PTHREAD_MUTEXATTR_T 4

# define __SIZEOF_PTHREAD_COND_T 48

# define __SIZEOF_PTHREAD_CONDATTR_T 4

# define __SIZEOF_PTHREAD_RWLOCK_T 56

# define __SIZEOF_PTHREAD_RWLOCKATTR_T 8

# define __SIZEOF_PTHREAD_BARRIER_T 32

# define __SIZEOF_PTHREAD_BARRIERATTR_T 4

#else

# define __SIZEOF_PTHREAD_ATTR_T 36

# define __SIZEOF_PTHREAD_MUTEX_T 24

# define __SIZEOF_PTHREAD_MUTEXATTR_T 4

# define __SIZEOF_PTHREAD_COND_T 48

# define __SIZEOF_PTHREAD_CONDATTR_T 4

# define __SIZEOF_PTHREAD_RWLOCK_T 32

# define __SIZEOF_PTHREAD_RWLOCKATTR_T 8

# define __SIZEOF_PTHREAD_BARRIER_T 20

# define __SIZEOF_PTHREAD_BARRIERATTR_T 4

#endif

 

 

/* Thread identifiers.  The structure of the attribute type is not

   exposed on purpose.  */

typedef unsigned long int pthread_t;

 

 

typedef union

{

  char __size[__SIZEOF_PTHREAD_ATTR_T];

  long int __align;

} pthread_attr_t;

 

 

#if __WORDSIZE == 64

typedef struct __pthread_internal_list

{

  struct __pthread_internal_list *__prev;

  struct __pthread_internal_list *__next;

} __pthread_list_t;

#else

typedef struct __pthread_internal_slist

{

  struct __pthread_internal_slist *__next;

} __pthread_slist_t;

#endif

 

 

/* Data structures for mutex handling.  The structure of the attribute

   type is not exposed on purpose.  */

typedef union

{

  struct __pthread_mutex_s

  {

    int __lock;

    unsigned int __count;

    int __owner;

#if __WORDSIZE == 64

    unsigned int __nusers;

#endif

    /* KIND must stay at this position in the structure to maintain

       binary compatibility.  */

    int __kind;

#if __WORDSIZE == 64

    int __spins;

    __pthread_list_t __list;

# define __PTHREAD_MUTEX_HAVE_PREV 1

#else

    unsigned int __nusers;

    __extension__ union

    {

      int __spins;

      __pthread_slist_t __list;

    };

#endif

  } __data;

  char __size[__SIZEOF_PTHREAD_MUTEX_T];

  long int __align;

} pthread_mutex_t;

 

typedef union

{

  char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];

  int __align;

} pthread_mutexattr_t;

 

 

/* Data structure for conditional variable handling.  The structure of

   the attribute type is not exposed on purpose.  */

typedef union

{

  struct

  {

    int __lock;

    unsigned int __futex;

    __extension__ unsigned long long int __total_seq;

    __extension__ unsigned long long int __wakeup_seq;

    __extension__ unsigned long long int __woken_seq;

    void *__mutex;

    unsigned int __nwaiters;

    unsigned int __broadcast_seq;

  } __data;

  char __size[__SIZEOF_PTHREAD_COND_T];

  __extension__ long long int __align;

} pthread_cond_t;

 

typedef union

{

  char __size[__SIZEOF_PTHREAD_CONDATTR_T];

  int __align;

} pthread_condattr_t;

 

 

/* Keys for thread-specific data */

typedef unsigned int pthread_key_t;

 

 

/* Once-only execution */

typedef int pthread_once_t;

 

 

#if defined __USE_UNIX98 || defined __USE_XOPEN2K

/* Data structure for read-write lock variable handling.  The

   structure of the attribute type is not exposed on purpose.  */

typedef union

{

# if __WORDSIZE == 64

  struct

  {

    int __lock;

    unsigned int __nr_readers;

    unsigned int __readers_wakeup;

    unsigned int __writer_wakeup;

    unsigned int __nr_readers_queued;

    unsigned int __nr_writers_queued;

    int __writer;

    int __shared;

    unsigned long int __pad1;

    unsigned long int __pad2;

    /* FLAGS must stay at this position in the structure to maintain

       binary compatibility.  */

    unsigned int __flags;

  } __data;

# else

  struct

  {

    int __lock;

    unsigned int __nr_readers;

    unsigned int __readers_wakeup;

    unsigned int __writer_wakeup;

    unsigned int __nr_readers_queued;

    unsigned int __nr_writers_queued;

    /* FLAGS must stay at this position in the structure to maintain

       binary compatibility.  */

    unsigned char __flags;

    unsigned char __shared;

    unsigned char __pad1;

    unsigned char __pad2;

    int __writer;

  } __data;

# endif

  char __size[__SIZEOF_PTHREAD_RWLOCK_T];

  long int __align;

} pthread_rwlock_t;

 

typedef union

{

  char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];

  long int __align;

} pthread_rwlockattr_t;

#endif

 

 

#ifdef __USE_XOPEN2K

/* POSIX spinlock data type.  */

typedef volatile int pthread_spinlock_t;

 

 

/* POSIX barriers data type.  The structure of the type is

   deliberately not exposed.  */

typedef union

{

  char __size[__SIZEOF_PTHREAD_BARRIER_T];

  long int __align;

} pthread_barrier_t;

 

typedef union

{

  char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];

  int __align;

} pthread_barrierattr_t;

#endif

 

 

#if __WORDSIZE == 32

/* Extra attributes for the cleanup functions.  */

# define __cleanup_fct_attribute __attribute__ ((__regparm__ (1)))

#endif

 

#endif /* bits/pthreadtypes.h */