quse.c

nuclues plus 源代码程序

/*************************************************************************/
/*                                                                       */
/*        Copyright (c) 1993-1996 Accelerated Technology, Inc.           */
/*                                                                       */
/* PROPRIETARY RIGHTS of Accelerated Technology are involved in the      */
/* subject matter of this material.  All manufacturing, reproduction,    */
/* use, and sales rights pertaining to this subject matter are governed  */
/* by the license agreement.  The recipient of this software implicitly  */
/* accepts the terms of the license.                                     */
/*                                                                       */
/*************************************************************************/

/*************************************************************************/
/*                                                                       */
/* FILE NAME                                            VERSION          */
/*                                                                       */
/*      quse.c                                          PLUS  1.2        */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      QU - Queue Management                                            */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains error checking routines for supplemental      */
/*      functions in the Queue component.  This permits easy removal of  */
/*      error checking logic when it is not needed.                      */
/*                                                                       */
/* AUTHOR                                                                */
/*                                                                       */
/*      William E. Lamie, Accelerated Technology, Inc.                   */
/*                                                                       */
/* DATA STRUCTURES                                                       */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* FUNCTIONS                                                             */
/*                                                                       */
/*      QUSE_Reset_Queue                    Reset a queue                */
/*      QUSE_Send_To_Front_Of_Queue         Send message to queue's front*/
/*      QUSE_Broadcast_To_Queue             Broadcast message to queue   */
/*                                                                       */
/* DEPENDENCIES                                                          */
/*                                                                       */
/*      cs_extr.h                           Common Service functions     */
/*      tc_extr.h                           Thread Control functions     */
/*      qu_extr.h                           Queue functions              */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         NAME            DATE                    REMARKS               */
/*                                                                       */
/*      W. Lamie        03-01-1994      Created initial version 1.1 from */
/*                                        routines originally in core    */
/*                                        error checking file            */
/*      R. Pfaff -                                                       */
/*      D. Lamie        03-18-1994      Verified version 1.1             */
/*      M.Q. Qian       04-17-1996      updated to version 1.2           */
/*                                                                       */
/*************************************************************************/
#define         NU_SOURCE_FILE


#include        "cs_extr.h"                 /* Common service functions  */
#include        "tc_extr.h"                 /* Thread control functions  */
#include        "qu_extr.h"                 /* Queue functions           */



/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      QUSE_Reset_Queue                                                 */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function performs error checking on the parameter supplied  */
/*      to the queue reset function.                                     */
/*                                                                       */
/* AUTHOR                                                                */
/*                                                                       */
/*      William E. Lamie, Accelerated Technology, Inc.                   */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      QUS_Reset_Queue                     Actual reset queue function  */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      queue_ptr                           Queue control block pointer  */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      NU_INVALID_QUEUE                    Invalid queue pointer        */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         NAME            DATE                    REMARKS               */
/*                                                                       */
/*      W. Lamie        03-01-1993      Created initial version 1.0      */
/*      D. Lamie        04-19-1993      Verified version 1.0             */
/*      W. Lamie        03-01-1994      Modified function interface,     */
/*                                        resulting in version 1.1       */
/*      R. Pfaff -                                                       */
/*      D. Lamie        03-18-1994      Verified version 1.1             */
/*                                                                       */
/*************************************************************************/
STATUS  QUSE_Reset_Queue(NU_QUEUE *queue_ptr)
{

QU_QCB         *queue;
STATUS          status;


    /* Move input queue pointer into internal pointer.  */
    queue =  (QU_QCB *) queue_ptr;

    /* Determine if there is an error with the queue pointer.  */
    if (queue == NU_NULL)
    
        /* Indicate that the queue pointer is invalid.  */
        status =  NU_INVALID_QUEUE;
        
    else if (queue -> qu_id != QU_QUEUE_ID)
    
        /* Indicate that the queue pointer is invalid.  */
        status =  NU_INVALID_QUEUE;

    else
    
        /* All the parameters are okay, call the actual function to reset
           a queue.  */
        status =  QUS_Reset_Queue(queue_ptr);
                                  
    /* Return completion status.  */
    return(status);
}


/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      QUSE_Send_To_Front_Of_Queue                                      */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function performs error checking on the parameters supplied */
/*      to the send message to front of queue function.                  */
/*                                                                       */
/* AUTHOR                                                                */
/*                                                                       */
/*      William E. Lamie, Accelerated Technology, Inc.                   */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      QUS_Send_To_Front_Of_Queue          Actual send to front of      */
/*                                            queue function             */
/*      TCCE_Suspend_Error                  Check suspend validity       */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      queue_ptr                           Queue control block pointer  */
/*      message                             Pointer to message to send   */
/*      size                                Size of message to send      */
/*      suspend                             Suspension option if full    */
/*                                                                       */