NetBSD-5.0.2/lib/libpthread/pthread_types.h
/* $NetBSD: pthread_types.h,v 1.13 2008/08/02 19:46:30 matt Exp $ */
/*-
* Copyright (c) 2001, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Nathan J. Williams.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _LIB_PTHREAD_TYPES_H
#define _LIB_PTHREAD_TYPES_H
/*
* We use the "pthread_spin_t" name internally; "pthread_spinlock_t" is the
* POSIX spinlock object.
*/
typedef __cpu_simple_lock_t pthread_spin_t;
/*
* Copied from PTQ_HEAD in pthread_queue.h
*/
#define _PTQ_HEAD(name, type) \
struct name { \
struct type *ptqh_first;/* first element */ \
struct type **ptqh_last;/* addr of last next element */ \
}
_PTQ_HEAD(pthread_queue_struct_t, __pthread_st);
typedef struct pthread_queue_struct_t pthread_queue_t;
struct __pthread_st;
struct __pthread_attr_st;
struct __pthread_mutex_st;
struct __pthread_mutexattr_st;
struct __pthread_cond_st;
struct __pthread_condattr_st;
struct __pthread_spin_st;
struct __pthread_rwlock_st;
struct __pthread_rwlockattr_st;
struct __pthread_barrier_st;
struct __pthread_barrierattr_st;
typedef struct __pthread_st *pthread_t;
typedef struct __pthread_attr_st pthread_attr_t;
typedef struct __pthread_mutex_st pthread_mutex_t;
typedef struct __pthread_mutexattr_st pthread_mutexattr_t;
typedef struct __pthread_cond_st pthread_cond_t;
typedef struct __pthread_condattr_st pthread_condattr_t;
typedef struct __pthread_once_st pthread_once_t;
typedef struct __pthread_spinlock_st pthread_spinlock_t;
typedef struct __pthread_rwlock_st pthread_rwlock_t;
typedef struct __pthread_rwlockattr_st pthread_rwlockattr_t;
typedef struct __pthread_barrier_st pthread_barrier_t;
typedef struct __pthread_barrierattr_st pthread_barrierattr_t;
typedef int pthread_key_t;
struct __pthread_attr_st {
unsigned int pta_magic;
int pta_flags;
void *pta_private;
};
/*
* ptm_owner is the actual lock field which is locked via CAS operation.
* This structure's layout is designed to compatible with the previous
* version used in SA pthreads.
*/
#ifdef __CPU_SIMPLE_LOCK_PAD
/*
* If __SIMPLE_UNLOCKED != 0 and we have to pad, we have to worry about
* endianness. Currently that isn't an issue but put in a check in case
* something changes in the future.
*/
#if __SIMPLELOCK_UNLOCKED != 0
#error __CPU_SIMPLE_LOCK_PAD incompatible with __SIMPLELOCK_UNLOCKED == 0
#endif
#endif
struct __pthread_mutex_st {
unsigned int ptm_magic;
pthread_spin_t ptm_errorcheck;
#ifdef __CPU_SIMPLE_LOCK_PAD
uint8_t ptm_pad1[3];
#endif
pthread_spin_t ptm_interlock; /* unused - backwards compat */
#ifdef __CPU_SIMPLE_LOCK_PAD
uint8_t ptm_pad2[3];
#endif
volatile pthread_t ptm_owner;
pthread_t * volatile ptm_waiters;
unsigned int ptm_recursed;
void *ptm_spare2; /* unused - backwards compat */
};
#define _PT_MUTEX_MAGIC 0x33330003
#define _PT_MUTEX_DEAD 0xDEAD0003
#ifdef __CPU_SIMPLE_LOCK_PAD
#define _PTHREAD_MUTEX_INITIALIZER { _PT_MUTEX_MAGIC, \
__SIMPLELOCK_UNLOCKED, { 0, 0, 0 }, \
__SIMPLELOCK_UNLOCKED, { 0, 0, 0 }, \
NULL, NULL, 0, NULL \
}
#else
#define _PTHREAD_MUTEX_INITIALIZER { _PT_MUTEX_MAGIC, \
__SIMPLELOCK_UNLOCKED, \
__SIMPLELOCK_UNLOCKED, \
NULL, NULL, 0, NULL \
}
#endif /* __CPU_SIMPLE_LOCK_PAD */
struct __pthread_mutexattr_st {
unsigned int ptma_magic;
void *ptma_private;
};
#define _PT_MUTEXATTR_MAGIC 0x44440004
#define _PT_MUTEXATTR_DEAD 0xDEAD0004
struct __pthread_cond_st {
unsigned int ptc_magic;
/* Protects the queue of waiters */
pthread_spin_t ptc_lock;
pthread_queue_t ptc_waiters;
pthread_mutex_t *ptc_mutex; /* Current mutex */
void *ptc_private;
};
#define _PT_COND_MAGIC 0x55550005
#define _PT_COND_DEAD 0xDEAD0005
#define _PTHREAD_COND_INITIALIZER { _PT_COND_MAGIC, \
__SIMPLELOCK_UNLOCKED, \
{NULL, NULL}, \
NULL, \
NULL \
}
struct __pthread_condattr_st {
unsigned int ptca_magic;
void *ptca_private;
};
#define _PT_CONDATTR_MAGIC 0x66660006
#define _PT_CONDATTR_DEAD 0xDEAD0006
struct __pthread_once_st {
pthread_mutex_t pto_mutex;
int pto_done;
};
#define _PTHREAD_ONCE_INIT { PTHREAD_MUTEX_INITIALIZER, 0 }
struct __pthread_spinlock_st {
unsigned int pts_magic;
pthread_spin_t pts_spin;
int pts_flags;
};
#define _PT_SPINLOCK_MAGIC 0x77770007
#define _PT_SPINLOCK_DEAD 0xDEAD0007
#define _PT_SPINLOCK_PSHARED 0x00000001
/* PTHREAD_SPINLOCK_INITIALIZER is an extension not specified by POSIX. */
#define _PTHREAD_SPINLOCK_INITIALIZER { _PT_SPINLOCK_MAGIC, \
__SIMPLELOCK_UNLOCKED, \
0 \
}
struct __pthread_rwlock_st {
unsigned int ptr_magic;
/* Protects data below */
pthread_spin_t ptr_interlock;
pthread_queue_t ptr_rblocked;
pthread_queue_t ptr_wblocked;
unsigned int ptr_nreaders;
volatile pthread_t ptr_owner;
void *ptr_private;
};
#define _PT_RWLOCK_MAGIC 0x99990009
#define _PT_RWLOCK_DEAD 0xDEAD0009
#define _PTHREAD_RWLOCK_INITIALIZER { _PT_RWLOCK_MAGIC, \
__SIMPLELOCK_UNLOCKED, \
{NULL, NULL}, \
{NULL, NULL}, \
0, \
NULL, \
NULL, \
}
struct __pthread_rwlockattr_st {
unsigned int ptra_magic;
void *ptra_private;
};
#define _PT_RWLOCKATTR_MAGIC 0x99990909
#define _PT_RWLOCKATTR_DEAD 0xDEAD0909
struct __pthread_barrier_st {
unsigned int ptb_magic;
/* Protects data below */
pthread_spin_t ptb_lock;
pthread_queue_t ptb_waiters;
unsigned int ptb_initcount;
unsigned int ptb_curcount;
unsigned int ptb_generation;
void *ptb_private;
};
#define _PT_BARRIER_MAGIC 0x88880008
#define _PT_BARRIER_DEAD 0xDEAD0008
struct __pthread_barrierattr_st {
unsigned int ptba_magic;
void *ptba_private;
};
#define _PT_BARRIERATTR_MAGIC 0x88880808
#define _PT_BARRIERATTR_DEAD 0xDEAD0808
#endif /* _LIB_PTHREAD_TYPES_H */