/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @brief POSIX Message Queues Private Private Support
*
* This include file contains all the private support information for
* POSIX Message Queues.
*
* The structure of the routines is identical to that of POSIX
* Message_queues to leave the option of having unnamed message
* queues at a future date. They are currently not part of the
* POSIX standard but unnamed message_queues are. This is also
* the reason for the apparently unnecessary tracking of
* the process_shared attribute. [In addition to the fact that
* it would be trivial to add pshared to the mq_attr structure
* and have process private message queues.]
*
* This code ignores the O_RDONLY/O_WRONLY/O_RDWR flag at open
* time.
*/
/*
* COPYRIGHT (c) 1989-2011.
* On-Line Applications Research Corporation (OAR).
*
* 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 _RTEMS_POSIX_MQUEUE_H
#define _RTEMS_POSIX_MQUEUE_H
#include <rtems/score/coremsg.h>
#include <rtems/score/objectdata.h>
#include <limits.h>
#include <mqueue.h>
#include <signal.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup POSIX_MQUEUE_P Message Queues Private Support
*
* @ingroup POSIXAPI
*
*/
/**@{**/
/*
* Data Structure used to manage a POSIX message queue
*/
typedef struct {
Objects_Control Object;
CORE_message_queue_Control Message_queue;
bool linked;
uint32_t open_count;
struct sigevent notification;
int oflag;
} POSIX_Message_queue_Control;
/**
* @brief The POSIX Message Queue objects information.
*/
extern Objects_Information _POSIX_Message_queue_Information;
/**
* @brief Macro to define the objects information for the POSIX Message Queue
* objects.
*
* This macro should only be used by <rtems/confdefs.h>.
*
* @param max The configured object maximum (the OBJECTS_UNLIMITED_OBJECTS flag
* may be set).
*/
#define POSIX_MESSAGE_QUEUE_INFORMATION_DEFINE( max ) \
OBJECTS_INFORMATION_DEFINE( \
_POSIX_Message_queue, \
OBJECTS_POSIX_API, \
OBJECTS_POSIX_MESSAGE_QUEUES, \
POSIX_Message_queue_Control, \
max, \
_POSIX_PATH_MAX, \
NULL \
)
/** @} */
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */