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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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