/*
 * Copyright 1998,1999 The OpenLDAP Foundation, Redwood City, California, USA
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted only
 * as authorized by the OpenLDAP Public License.  A copy of this
 * license is available at http://www.OpenLDAP.org/license.html or
 * in file LICENSE in the top-level directory of the distribution.
 */
/* ldap_pvt_thread.h - ldap threads header file NG */

#ifndef _LDAP_PVT_THREAD_H
#define _LDAP_PVT_THREAD_H

#include "portable.h"

#if defined( HAVE_PTHREADS )
/**********************************
 *                                *
 * definitions for POSIX Threads  *
 *                                *
 **********************************/

#include <pthread.h>
#ifdef HAVE_SCHED_H
#include <sched.h>
#endif

LDAP_BEGIN_DECL

typedef pthread_t		ldap_pvt_thread_t;
typedef pthread_attr_t		ldap_pvt_thread_attr_t;
typedef pthread_mutex_t		ldap_pvt_thread_mutex_t;
typedef pthread_mutexattr_t	ldap_pvt_thread_mutexattr_t;
typedef pthread_cond_t		ldap_pvt_thread_cond_t;
typedef pthread_condattr_t	ldap_pvt_thread_condattr_t;

#define LDAP_PVT_THREAD_CREATE_DETACHED PTHREAD_CREATE_DETACHED 
#define LDAP_PVT_THREAD_CREATE_JOINABLE PTHREAD_CREATE_JOINABLE 

#if defined( _POSIX_REENTRANT_FUNCTIONS ) || \
	defined( _POSIX_THREAD_SAFE_FUNCTIONS ) || \
	defined( _POSIX_THREAD_SAFE_FUNCTIONS )
#define HAVE_REENTRANT_FUNCTIONS 1
#endif

LDAP_END_DECL

#elif defined ( HAVE_MACH_CTHREADS )
/**********************************
 *                                *
 * definitions for Mach CThreads  *
 *                                *
 **********************************/

#include <mach/cthreads.h>

LDAP_BEGIN_DECL

typedef cthread_t		ldap_pvt_thread_t;
typedef int			ldap_pvt_thread_attr_t;
typedef struct mutex		ldap_pvt_thread_mutex_t;
typedef int			ldap_pvt_thread_mutexattr_t;
typedef struct condition	ldap_pvt_thread_cond_t;
typedef int			ldap_pvt_thread_condattr_t;

#define LDAP_PVT_THREAD_CREATE_DETACHED 1
#define LDAP_PVT_THREAD_CREATE_JOINABLE 0

LDAP_END_DECL

#elif defined( HAVE_THR )
/**************************************
 *                                    *
 * thread definitions for Solaris LWP *
 *                                    *
 **************************************/

#include <thread.h>
#include <synch.h>

LDAP_BEGIN_DECL

typedef thread_t		ldap_pvt_thread_t;
typedef int			ldap_pvt_thread_attr_t;
typedef mutex_t			ldap_pvt_thread_mutex_t;
typedef int			ldap_pvt_thread_mutexattr_t;
typedef cond_t			ldap_pvt_thread_cond_t;
typedef int			ldap_pvt_thread_condattr_t;

#define LDAP_PVT_THREAD_CREATE_DETACHED THR_DETACHED
#define LDAP_PVT_THREAD_CREATE_JOINABLE 0

#define HAVE_REENTRANT_FUNCTIONS 1

LDAP_END_DECL

#elif defined( HAVE_LWP )
/*************************************
 *                                   *
 * thread definitions for SunOS LWP  *
 *                                   *
 *************************************/

#include <lwp/lwp.h>
#include <lwp/stackdep.h>

LDAP_BEGIN_DECL

typedef thread_t		ldap_pvt_thread_t;
typedef int			ldap_pvt_thread_attr_t;
typedef mon_t			ldap_pvt_thread_mutex_t;
typedef int			ldap_pvt_thread_mutexattr_t;
struct lwpcv {
	int		lcv_created;
	cv_t		lcv_cv;
};
typedef struct lwpcv		ldap_pvt_thread_cond_t;
typedef int			ldap_pvt_thread_condattr_t;

#define LDAP_PVT_THREAD_CREATE_DETACHED 1
#define LDAP_PVT_THREAD_CREATE_JOINABLE 0

#define HAVE_REENTRANT_FUNCTIONS 1

stkalign_t *ldap_pvt_thread_get_stack( int *stacknop );
void ldap_pvt_thread_free_stack( int *stackno );

LDAP_END_DECL

#elif HAVE_NT_THREADS

#include <windows.h>
#include <process.h>

typedef HANDLE			ldap_pvt_thread_t;
typedef int			ldap_pvt_thread_attr_t;
typedef HANDLE			ldap_pvt_thread_mutex_t;
typedef int			ldap_pvt_thread_mutexattr_t;
typedef HANDLE			ldap_pvt_thread_cond_t;
typedef int			ldap_pvt_thread_condattr_t;

#define LDAP_PVT_THREAD_CREATE_DETACHED 0
#define LDAP_PVT_THREAD_CREATE_JOINABLE 0

#else

/***********************************
 *                                 *
 * thread definitions for no       *
 * underlying library support      *
 *                                 *
 ***********************************/

LDAP_BEGIN_DECL

#ifndef NO_THREADS
#define NO_THREADS 1
#endif

typedef int			ldap_pvt_thread_t;
typedef int			ldap_pvt_thread_attr_t;
typedef int			ldap_pvt_thread_mutex_t;
typedef int			ldap_pvt_thread_mutexattr_t;
typedef int			ldap_pvt_thread_cond_t;
typedef int			ldap_pvt_thread_condattr_t;

#define LDAP_PVT_THREAD_CREATE_DETACHED 0
#define LDAP_PVT_THREAD_CREATE_JOINABLE 0

LDAP_END_DECL

#endif /* no threads support */

#ifndef NO_THREADS
#	define HAVE_THREADS 1
#endif

LDAP_F int 
ldap_pvt_thread_create LDAP_P(( ldap_pvt_thread_t * thread, 
			       ldap_pvt_thread_attr_t *attr,
			       void *(*start_routine)( void *), 
			       void *arg));

LDAP_F void 
ldap_pvt_thread_exit LDAP_P(( void *retval ));

LDAP_F int 
ldap_pvt_thread_join LDAP_P(( ldap_pvt_thread_t thread, 
			     void **thread_return ));

LDAP_F int 
ldap_pvt_thread_kill LDAP_P(( ldap_pvt_thread_t thread, int signo ));

LDAP_F int 
ldap_pvt_thread_yield LDAP_P(( void ));

LDAP_F int 
ldap_pvt_thread_attr_init LDAP_P(( ldap_pvt_thread_attr_t *attr ));

LDAP_F int 
ldap_pvt_thread_attr_destroy LDAP_P(( ldap_pvt_thread_attr_t *attr ));

LDAP_F int 
ldap_pvt_thread_attr_setdetachstate LDAP_P(( ldap_pvt_thread_attr_t *attr, 
					    int dstate ));

LDAP_F int 
ldap_pvt_thread_cond_init LDAP_P(( ldap_pvt_thread_cond_t *cond,
				  ldap_pvt_thread_condattr_t *attr ));

LDAP_F int 
ldap_pvt_thread_cond_signal LDAP_P(( ldap_pvt_thread_cond_t *cond ));

LDAP_F int 
ldap_pvt_thread_cond_broadcast LDAP_P(( ldap_pvt_thread_cond_t *cond ));

LDAP_F int 
ldap_pvt_thread_cond_wait LDAP_P(( ldap_pvt_thread_cond_t *cond, 
				  ldap_pvt_thread_mutex_t *mutex ));

LDAP_F int 
ldap_pvt_thread_mutex_init LDAP_P(( ldap_pvt_thread_mutex_t *mutex,
				   ldap_pvt_thread_mutexattr_t *attr ));

LDAP_F int 
ldap_pvt_thread_mutex_destroy LDAP_P(( ldap_pvt_thread_mutex_t *mutex ));

LDAP_F int 
ldap_pvt_thread_mutex_lock LDAP_P(( ldap_pvt_thread_mutex_t *mutex ));

LDAP_F int 
ldap_pvt_thread_mutex_unlock LDAP_P(( ldap_pvt_thread_mutex_t *mutex ));

#include <ldap_cdefs.h>

typedef struct ldap_pvt_thread_rdwr_var {
	int readers_reading;
	int writer_writing;
	ldap_pvt_thread_mutex_t mutex;
	ldap_pvt_thread_cond_t lock_free;
} ldap_pvt_thread_rdwr_t;

typedef void * ldap_pvt_thread_rdwrattr_t;

LDAP_F int 
ldap_pvt_thread_rdwr_init LDAP_P((ldap_pvt_thread_rdwr_t *rdwrp, 
				  ldap_pvt_thread_rdwrattr_t *attrp));
LDAP_F int 
ldap_pvt_thread_rdwr_rlock LDAP_P((ldap_pvt_thread_rdwr_t *rdwrp));
LDAP_F int 
ldap_pvt_thread_rdwr_runlock LDAP_P((ldap_pvt_thread_rdwr_t *rdwrp));
LDAP_F int 
ldap_pvt_thread_rdwr_wlock LDAP_P((ldap_pvt_thread_rdwr_t *rdwrp));
LDAP_F int 
ldap_pvt_thread_rdwr_wunlock LDAP_P((ldap_pvt_thread_rdwr_t *rdwrp));

#ifdef LDAP_DEBUG
LDAP_F int 
ldap_pvt_thread_rdwr_rchk LDAP_P((ldap_pvt_thread_rdwr_t *rdwrp));
LDAP_F int 
ldap_pvt_thread_rdwr_wchk LDAP_P((ldap_pvt_thread_rdwr_t *rdwrp));
LDAP_F int 
ldap_pvt_thread_rdwr_rwchk LDAP_P((ldap_pvt_thread_rdwr_t *rdwrp));
#endif /* LDAP_DEBUG */

LDAP_END_DECL

#endif /* _LDAP_THREAD_H */