/* Linuxthreads - a simple clone()-based implementation of Posix */
|
/* Linuxthreads - a simple clone()-based implementation of Posix */
|
/* threads for Linux. */
|
/* threads for Linux. */
|
/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */
|
/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */
|
/* */
|
/* */
|
/* This program is free software; you can redistribute it and/or */
|
/* This program is free software; you can redistribute it and/or */
|
/* modify it under the terms of the GNU Library General Public License */
|
/* modify it under the terms of the GNU Library General Public License */
|
/* as published by the Free Software Foundation; either version 2 */
|
/* as published by the Free Software Foundation; either version 2 */
|
/* of the License, or (at your option) any later version. */
|
/* of the License, or (at your option) any later version. */
|
/* */
|
/* */
|
/* This program is distributed in the hope that it will be useful, */
|
/* This program is distributed in the hope that it will be useful, */
|
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
|
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
|
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
|
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
|
/* GNU Library General Public License for more details. */
|
/* GNU Library General Public License for more details. */
|
|
|
#if !defined _BITS_TYPES_H && !defined _PTHREAD_H
|
#if !defined _BITS_TYPES_H && !defined _PTHREAD_H
|
# error "Never include <bits/pthreadtypes.h> directly; use <sys/types.h> instead."
|
# error "Never include <bits/pthreadtypes.h> directly; use <sys/types.h> instead."
|
#endif
|
#endif
|
|
|
#ifndef _BITS_PTHREADTYPES_H
|
#ifndef _BITS_PTHREADTYPES_H
|
#define _BITS_PTHREADTYPES_H 1
|
#define _BITS_PTHREADTYPES_H 1
|
|
|
#define __need_schedparam
|
#define __need_schedparam
|
#include <bits/sched.h>
|
#include <bits/sched.h>
|
|
|
/* Fast locks (not abstract because mutexes and conditions aren't abstract). */
|
/* Fast locks (not abstract because mutexes and conditions aren't abstract). */
|
struct _pthread_fastlock
|
struct _pthread_fastlock
|
{
|
{
|
long int __status; /* "Free" or "taken" or head of waiting list */
|
long int __status; /* "Free" or "taken" or head of waiting list */
|
int __spinlock; /* Used by compare_and_swap emulation. Also,
|
int __spinlock; /* Used by compare_and_swap emulation. Also,
|
adaptive SMP lock stores spin count here. */
|
adaptive SMP lock stores spin count here. */
|
};
|
};
|
|
|
#ifndef _PTHREAD_DESCR_DEFINED
|
#ifndef _PTHREAD_DESCR_DEFINED
|
/* Thread descriptors */
|
/* Thread descriptors */
|
typedef struct _pthread_descr_struct *_pthread_descr;
|
typedef struct _pthread_descr_struct *_pthread_descr;
|
# define _PTHREAD_DESCR_DEFINED
|
# define _PTHREAD_DESCR_DEFINED
|
#endif
|
#endif
|
|
|
|
|
/* Attributes for threads. */
|
/* Attributes for threads. */
|
typedef struct __pthread_attr_s
|
typedef struct __pthread_attr_s
|
{
|
{
|
int __detachstate;
|
int __detachstate;
|
int __schedpolicy;
|
int __schedpolicy;
|
struct __sched_param __schedparam;
|
struct __sched_param __schedparam;
|
int __inheritsched;
|
int __inheritsched;
|
int __scope;
|
int __scope;
|
size_t __guardsize;
|
size_t __guardsize;
|
int __stackaddr_set;
|
int __stackaddr_set;
|
void *__stackaddr;
|
void *__stackaddr;
|
size_t __stacksize;
|
size_t __stacksize;
|
} pthread_attr_t;
|
} pthread_attr_t;
|
|
|
|
|
/* Conditions (not abstract because of PTHREAD_COND_INITIALIZER */
|
/* Conditions (not abstract because of PTHREAD_COND_INITIALIZER */
|
typedef struct
|
typedef struct
|
{
|
{
|
struct _pthread_fastlock __c_lock; /* Protect against concurrent access */
|
struct _pthread_fastlock __c_lock; /* Protect against concurrent access */
|
_pthread_descr __c_waiting; /* Threads waiting on this condition */
|
_pthread_descr __c_waiting; /* Threads waiting on this condition */
|
} pthread_cond_t;
|
} pthread_cond_t;
|
|
|
|
|
/* Attribute for conditionally variables. */
|
/* Attribute for conditionally variables. */
|
typedef struct
|
typedef struct
|
{
|
{
|
int __dummy;
|
int __dummy;
|
} pthread_condattr_t;
|
} pthread_condattr_t;
|
|
|
/* Keys for thread-specific data */
|
/* Keys for thread-specific data */
|
typedef unsigned int pthread_key_t;
|
typedef unsigned int pthread_key_t;
|
|
|
|
|
/* Mutexes (not abstract because of PTHREAD_MUTEX_INITIALIZER). */
|
/* Mutexes (not abstract because of PTHREAD_MUTEX_INITIALIZER). */
|
/* (The layout is unnatural to maintain binary compatibility
|
/* (The layout is unnatural to maintain binary compatibility
|
with earlier releases of LinuxThreads.) */
|
with earlier releases of LinuxThreads.) */
|
typedef struct
|
typedef struct
|
{
|
{
|
int __m_reserved; /* Reserved for future use */
|
int __m_reserved; /* Reserved for future use */
|
int __m_count; /* Depth of recursive locking */
|
int __m_count; /* Depth of recursive locking */
|
_pthread_descr __m_owner; /* Owner thread (if recursive or errcheck) */
|
_pthread_descr __m_owner; /* Owner thread (if recursive or errcheck) */
|
int __m_kind; /* Mutex kind: fast, recursive or errcheck */
|
int __m_kind; /* Mutex kind: fast, recursive or errcheck */
|
struct _pthread_fastlock __m_lock; /* Underlying fast lock */
|
struct _pthread_fastlock __m_lock; /* Underlying fast lock */
|
} pthread_mutex_t;
|
} pthread_mutex_t;
|
|
|
|
|
/* Attribute for mutex. */
|
/* Attribute for mutex. */
|
typedef struct
|
typedef struct
|
{
|
{
|
int __mutexkind;
|
int __mutexkind;
|
} pthread_mutexattr_t;
|
} pthread_mutexattr_t;
|
|
|
|
|
/* Once-only execution */
|
/* Once-only execution */
|
typedef int pthread_once_t;
|
typedef int pthread_once_t;
|
|
|
|
|
#ifdef __USE_UNIX98
|
#ifdef __USE_UNIX98
|
/* Read-write locks. */
|
/* Read-write locks. */
|
typedef struct _pthread_rwlock_t
|
typedef struct _pthread_rwlock_t
|
{
|
{
|
struct _pthread_fastlock __rw_lock; /* Lock to guarantee mutual exclusion */
|
struct _pthread_fastlock __rw_lock; /* Lock to guarantee mutual exclusion */
|
int __rw_readers; /* Number of readers */
|
int __rw_readers; /* Number of readers */
|
_pthread_descr __rw_writer; /* Identity of writer, or NULL if none */
|
_pthread_descr __rw_writer; /* Identity of writer, or NULL if none */
|
_pthread_descr __rw_read_waiting; /* Threads waiting for reading */
|
_pthread_descr __rw_read_waiting; /* Threads waiting for reading */
|
_pthread_descr __rw_write_waiting; /* Threads waiting for writing */
|
_pthread_descr __rw_write_waiting; /* Threads waiting for writing */
|
int __rw_kind; /* Reader/Writer preference selection */
|
int __rw_kind; /* Reader/Writer preference selection */
|
int __rw_pshared; /* Shared between processes or not */
|
int __rw_pshared; /* Shared between processes or not */
|
} pthread_rwlock_t;
|
} pthread_rwlock_t;
|
|
|
|
|
/* Attribute for read-write locks. */
|
/* Attribute for read-write locks. */
|
typedef struct
|
typedef struct
|
{
|
{
|
int __lockkind;
|
int __lockkind;
|
int __pshared;
|
int __pshared;
|
} pthread_rwlockattr_t;
|
} pthread_rwlockattr_t;
|
#endif
|
#endif
|
|
|
#ifdef __USE_XOPEN2K
|
#ifdef __USE_XOPEN2K
|
/* POSIX spinlock data type. */
|
/* POSIX spinlock data type. */
|
typedef volatile int pthread_spinlock_t;
|
typedef volatile int pthread_spinlock_t;
|
|
|
/* POSIX barrier. */
|
/* POSIX barrier. */
|
typedef struct {
|
typedef struct {
|
struct _pthread_fastlock __ba_lock; /* Lock to guarantee mutual exclusion */
|
struct _pthread_fastlock __ba_lock; /* Lock to guarantee mutual exclusion */
|
int __ba_required; /* Threads needed for completion */
|
int __ba_required; /* Threads needed for completion */
|
int __ba_present; /* Threads waiting */
|
int __ba_present; /* Threads waiting */
|
_pthread_descr __ba_waiting; /* Queue of waiting threads */
|
_pthread_descr __ba_waiting; /* Queue of waiting threads */
|
} pthread_barrier_t;
|
} pthread_barrier_t;
|
|
|
/* barrier attribute */
|
/* barrier attribute */
|
typedef struct {
|
typedef struct {
|
int __pshared;
|
int __pshared;
|
} pthread_barrierattr_t;
|
} pthread_barrierattr_t;
|
|
|
#endif
|
#endif
|
|
|
|
|
/* Thread identifiers */
|
/* Thread identifiers */
|
typedef unsigned long int pthread_t;
|
typedef unsigned long int pthread_t;
|
|
|
#endif /* bits/pthreadtypes.h */
|
#endif /* bits/pthreadtypes.h */
|
|
|