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pthreadtypes.h
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/* Copyright (C) 2002-2007, 2012 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; if not, see <http://www.gnu.org/licenses/>. */ #ifndef _BITS_PTHREADTYPES_H #define _BITS_PTHREADTYPES_H 1 #include <bits/wordsize.h> #ifdef __x86_64__ # 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 32 # define __SIZEOF_PTHREAD_MUTEX_T 32 # define __SIZEOF_PTHREAD_MUTEXATTR_T 4 # define __SIZEOF_PTHREAD_COND_T 48 # define __SIZEOF_PTHREAD_CONDATTR_T 4 # define __SIZEOF_PTHREAD_RWLOCK_T 44 # define __SIZEOF_PTHREAD_RWLOCKATTR_T 8 # define __SIZEOF_PTHREAD_BARRIER_T 20 # define __SIZEOF_PTHREAD_BARRIERATTR_T 4 # endif #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; union pthread_attr_t { char __size[__SIZEOF_PTHREAD_ATTR_T]; long int __align; }; #ifndef __have_pthread_attr_t typedef union pthread_attr_t pthread_attr_t; # define __have_pthread_attr_t 1 #endif #ifdef __x86_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; #ifdef __x86_64__ unsigned int __nusers; #endif /* KIND must stay at this position in the structure to maintain binary compatibility. */ int __kind; #ifdef __x86_64__ short __spins; short __elision; __pthread_list_t __list; # define __PTHREAD_MUTEX_HAVE_PREV 1 /* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER. */ # define __PTHREAD_SPINS 0, 0 #else unsigned int __nusers; __extension__ union { struct { short __espins; short __elision; # define __spins __elision_data.__espins # define __elision __elision_data.__elision # define __PTHREAD_SPINS { 0, 0 } } __elision_data; __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 { # ifdef __x86_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; # define __PTHREAD_RWLOCK_INT_FLAGS_SHARED 1 } __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 #ifndef __x86_64__ /* Extra attributes for the cleanup functions. */ # define __cleanup_fct_attribute __attribute__ ((__regparm__ (1))) #endif #endif /* bits/pthreadtypes.h */