utility/rtos_compatibility_layers/posix/px_mq_reset_queue.c


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/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation
 * Copyright (c) 2026-present Eclipse ThreadX contributors
 *
 * This program and the accompanying materials are made available under the
 * terms of the MIT License which is available at
 * https://opensource.org/licenses/MIT.
 *
 * SPDX-License-Identifier: MIT
 **************************************************************************/


/**************************************************************************/
/**************************************************************************/
/**                                                                       */
/** POSIX wrapper for THREADX                                             */
/**                                                                       */
/**                                                                       */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/

/* Include necessary system files.  */

#include "tx_api.h"     /* Threadx API */
#include "pthread.h"    /* Posix API */
#include "px_int.h"     /* Posix helper functions */


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    posix_reset_queue                                  PORTABLE C       */
/*                                                           6.1.7        */
/*  AUTHOR                                                                */
/*                                                                        */
/*    William E. Lamie, Microsoft Corporation                             */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function resets a message queue structure                      */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    q_ptr                                 q_ptr                         */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    tx_byte_pool_delete                   Deletes byte pool             */
/*    posix_internal_error                  Returns generic error         */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    POSIX internal code                                                 */
/*                                                                        */
/**************************************************************************/
VOID posix_reset_queue(POSIX_MSG_QUEUE * q_ptr)
{
    /* Indicate this entry is not in use.  */
    q_ptr->in_use = TX_FALSE;

    /* Reset thread name to NULL string.  */
    q_ptr -> name = NULL;

    /* Reset open count.  */
    q_ptr -> open_count = 0;

    /* Reset storage */
    q_ptr -> storage = NULL;

    /* Delete message area.  */
    if (tx_byte_pool_delete(&(q_ptr ->vq_message_area)))
    {
        /* Internal error.  */
        posix_internal_error(444);
    }
    /* Reset queue id.  */
    q_ptr -> px_queue_id = 0;

    /* Reset Unlink Flag  */
    q_ptr -> unlink_flag = TX_FALSE;
}