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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [bits/] [pthreadtypes.h] - Rev 859
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/* Linuxthreads - a simple clone()-based implementation of Posix */ /* threads for Linux. */ /* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */ /* */ /* This program is free software; you can redistribute it and/or */ /* modify it under the terms of the GNU Library General Public License */ /* as published by the Free Software Foundation; either version 2 */ /* of the License, or (at your option) any later version. */ /* */ /* This program 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 Library General Public License for more details. */ #if !defined _BITS_TYPES_H && !defined _PTHREAD_H # error "Never include <bits/pthreadtypes.h> directly; use <sys/types.h> instead." #endif #ifndef _BITS_PTHREADTYPES_H #define _BITS_PTHREADTYPES_H 1 #define __need_schedparam #include <bits/sched.h> /* Fast locks (not abstract because mutexes and conditions aren't abstract). */ struct _pthread_fastlock { long int __status; /* "Free" or "taken" or head of waiting list */ int __spinlock; /* Used by compare_and_swap emulation. Also, adaptive SMP lock stores spin count here. */ }; #ifndef _PTHREAD_DESCR_DEFINED /* Thread descriptors */ typedef struct _pthread_descr_struct *_pthread_descr; # define _PTHREAD_DESCR_DEFINED #endif /* Attributes for threads. */ typedef struct __pthread_attr_s { int __detachstate; int __schedpolicy; struct __sched_param __schedparam; int __inheritsched; int __scope; size_t __guardsize; int __stackaddr_set; void *__stackaddr; size_t __stacksize; } pthread_attr_t; /* Conditions (not abstract because of PTHREAD_COND_INITIALIZER */ #ifdef __GLIBC_HAVE_LONG_LONG __extension__ typedef long long __pthread_cond_align_t; #else typedef long __pthread_cond_align_t; #endif typedef struct { struct _pthread_fastlock __c_lock; /* Protect against concurrent access */ _pthread_descr __c_waiting; /* Threads waiting on this condition */ char __padding[48 - sizeof (struct _pthread_fastlock) - sizeof (_pthread_descr) - sizeof (__pthread_cond_align_t)]; __pthread_cond_align_t __align; } pthread_cond_t; /* Attribute for conditionally variables. */ typedef struct { int __dummy; } pthread_condattr_t; /* Keys for thread-specific data */ typedef unsigned int pthread_key_t; /* Mutexes (not abstract because of PTHREAD_MUTEX_INITIALIZER). */ /* (The layout is unnatural to maintain binary compatibility with earlier releases of LinuxThreads.) */ typedef struct { int __m_reserved; /* Reserved for future use */ int __m_count; /* Depth of recursive locking */ _pthread_descr __m_owner; /* Owner thread (if recursive or errcheck) */ int __m_kind; /* Mutex kind: fast, recursive or errcheck */ struct _pthread_fastlock __m_lock; /* Underlying fast lock */ } pthread_mutex_t; /* Attribute for mutex. */ typedef struct { int __mutexkind; } pthread_mutexattr_t; /* Once-only execution */ typedef int pthread_once_t; #if defined __USE_UNIX98 || defined __USE_XOPEN2K /* Read-write locks. */ typedef struct _pthread_rwlock_t { struct _pthread_fastlock __rw_lock; /* Lock to guarantee mutual exclusion */ int __rw_readers; /* Number of readers */ _pthread_descr __rw_writer; /* Identity of writer, or NULL if none */ _pthread_descr __rw_read_waiting; /* Threads waiting for reading */ _pthread_descr __rw_write_waiting; /* Threads waiting for writing */ int __rw_kind; /* Reader/Writer preference selection */ int __rw_pshared; /* Shared between processes or not */ } pthread_rwlock_t; /* Attribute for read-write locks. */ typedef struct { int __lockkind; int __pshared; } pthread_rwlockattr_t; #endif #ifdef __USE_XOPEN2K /* POSIX spinlock data type. */ typedef volatile int pthread_spinlock_t; /* POSIX barrier. */ typedef struct { struct _pthread_fastlock __ba_lock; /* Lock to guarantee mutual exclusion */ int __ba_required; /* Threads needed for completion */ int __ba_present; /* Threads waiting */ _pthread_descr __ba_waiting; /* Queue of waiting threads */ } pthread_barrier_t; /* barrier attribute */ typedef struct { int __pshared; } pthread_barrierattr_t; #endif /* Thread identifiers */ typedef unsigned long int pthread_t; #endif /* bits/pthreadtypes.h */
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