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#ifndef CYGONCE_ISO_MQUEUE_H

#define CYGONCE_ISO_MQUEUE_H

/*========================================================================

//

//      mqueue.h

//

//      POSIX message queue functions

//

//========================================================================

//####ECOSGPLCOPYRIGHTBEGIN####

// -------------------------------------------

// This file is part of eCos, the Embedded Configurable Operating System.

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under

// the terms of the GNU General Public License as published by the Free

// Software Foundation; either version 2 or (at your option) any later version.

//

// eCos 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 General Public License

// for more details.

//

// You should have received a copy of the GNU General Public License along

// with eCos; if not, write to the Free Software Foundation, Inc.,

// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

//

// As a special exception, if other files instantiate templates or use macros

// or inline functions from this file, or you compile this file and link it

// with other works to produce a work based on this file, this file does not

// by itself cause the resulting work to be covered by the GNU General Public

// License. However the source code for this file must still be made available

// in accordance with section (3) of the GNU General Public License.

//

// This exception does not invalidate any other reasons why a work based on

// this file might be covered by the GNU General Public License.

//

// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.

// at http://sources.redhat.com/ecos/ecos-license/

// -------------------------------------------

//####ECOSGPLCOPYRIGHTEND####

//========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):     jlarmour

// Contributors:

// Date:          2000-05-05

// Purpose:       This file provides the macros, types and functions

//                for message queues required by POSIX 1003.1.

// Description:   The real contents of this file get set from the

//                configuration (set by the implementation)

// Usage:         #include <mqueue.h>

//

//####DESCRIPTIONEND####

//

//======================================================================

*/

/* CONFIGURATION */

#include <pkgconf/isoinfra.h>          /* Configuration header */

#include <pkgconf/kernel.h>            /* CYGFUN_KERNEL_THREADS_TIMER */

/* INCLUDES */

#ifdef _POSIX_MESSAGE_PASSING

# ifdef CYGBLD_ISO_MQUEUE_HEADER

#  include CYGBLD_ISO_MQUEUE_HEADER

# else

#include <sys/types.h>  /* size_t and ssize_t */

/* TYPES */

struct mq_attr {

    long mq_flags;    /* mqueue flags */

    long mq_maxmsg;   /* max number of messages */

    long mq_msgsize;  /* max message size */

    long mq_curmsgs;  /* number of messages currently queued */

};

typedef void *mqd_t;

#ifdef __cplusplus

extern "C" {

#endif

/* FUNCTIONS */

extern mqd_t

mq_open( const char * /* name */, int /* oflag */, ... );

extern int

mq_close( mqd_t /* mqdes */ );

extern int

mq_unlink( const char * /* name */ );

extern int

mq_send( mqd_t /* mqdes */, const char * /* msg_ptr */, size_t /* msg_len */,

         unsigned int /* msg_prio */ );

extern ssize_t

mq_receive( mqd_t /* mqdes */, char * /* msg_ptr */, size_t /* msg_len */,

            unsigned int * /* msg_prio */ );

#ifdef _POSIX_REALTIME_SIGNALS

struct sigevent;

extern int

mq_notify( mqd_t /* mqdes */, const struct sigevent * /* notification */ );

#endif

extern int

mq_setattr( mqd_t /* mqdes */, const struct mq_attr * /* mqstat */,

            struct mq_attr * /* omqstat */ );

extern int

mq_getattr( mqd_t /* mqdes */, struct mq_attr * /* mqstat */ );

# ifdef CYGFUN_KERNEL_THREADS_TIMER

/* POSIX 1003.1d Draft functions - FIXME: should be conditionalized */

struct timespec; /* forward declaration */

extern int

mq_timedsend( mqd_t /* mqdes */, const char * /* msg_ptr */,

              size_t /* msg_len */, unsigned int /* msg_prio */,

              const struct timespec * /* abs_timeout */ );

extern ssize_t

mq_timedreceive( mqd_t /* mqdes */, char * /* msg_ptr */,

                 size_t /* msg_len */, unsigned int * /* msg_prio */,

                 const struct timespec * /* abs_timeout */ );

# endif

#ifdef __cplusplus

}   /* extern "C" */

#endif

# endif  /* ifndef CYGBLD_ISO_MQUEUE_HEADER */

#endif   /* ifdef _POSIX_MESSAGE_PASSING */

#endif /* CYGONCE_ISO_MQUEUE_H multiple inclusion protection */

/* EOF mqueue.h */