?? quce.c
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/*************************************************************************/
/* */
/* Copyright Mentor Graphics Corporation 2002 */
/* All Rights Reserved. */
/* */
/* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */
/* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */
/* SUBJECT TO LICENSE TERMS. */
/* */
/*************************************************************************/
/*************************************************************************/
/* */
/* FILE NAME VERSION */
/* */
/* quce.c Nucleus PLUS 1.14 */
/* */
/* COMPONENT */
/* */
/* QU - Queue Management */
/* */
/* DESCRIPTION */
/* */
/* This file contains error checking routines for core functions */
/* of the Queue component. This permits easy removal of error */
/* checking logic when it is not needed. */
/* */
/* DATA STRUCTURES */
/* */
/* None */
/* */
/* FUNCTIONS */
/* */
/* QUCE_Create_Queue Create a queue */
/* QUCE_Delete_Queue Delete a queue */
/* QUCE_Send_To_Queue Send a queue message */
/* QUCE_Receive_From_Queue Receive a queue message */
/* */
/* DEPENDENCIES */
/* */
/* cs_extr.h Common Service functions */
/* tc_extr.h Thread Control functions */
/* qu_extr.h Queue functions */
/* */
/* HISTORY */
/* */
/* DATE REMARKS */
/* */
/* 03-01-1993 Created initial version 1.0 */
/* 04-19-1993 Verified version 1.0 */
/* 03-01-1994 Split original error checking */
/* file and changed function */
/* interfaces, resulting in */
/* version 1.1 */
/* */
/* 03-18-1994 Verified version 1.1 */
/* 04-17-1996 updated to version 1.2 */
/* 10-28-1997 Modified QUCE_Receive_From_Queue */
/* to correct SPR142. This */
/* created version 1.2a. */
/* 03-24-1998 Released version 1.3. */
/* 06-04-1998 Modified QUCE_Send_To_Queue to */
/* check for a size of 0, created */
/* version 1.3a. (SPR493) */
/* 04-17-2002 Released version 1.13m */
/* 11-07-2002 Released version 1.14 */
/*************************************************************************/
#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 */
/* */
/* QUCE_Create_Queue */
/* */
/* DESCRIPTION */
/* */
/* This function performs error checking on the parameters supplied */
/* to the queue create function. */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/* CALLS */
/* */
/* QUC_Create_Queue Actual create queue function */
/* */
/* INPUTS */
/* */
/* queue_ptr Queue control block pointer */
/* name Queue name */
/* start_address Starting address of actual */
/* queue area */
/* queue_size Total size of queue */
/* message_type Type of message supported by */
/* the queue (fixed/variable) */
/* message_size Size of message. Variable */
/* message-length queues, this*/
/* represents the maximum size*/
/* suspend_type Suspension type */
/* */
/* OUTPUTS */
/* */
/* NU_INVALID_QUEUE Invalid queue pointer */
/* NU_INVALID_MEMORY Invalid queue starting addr */
/* NU_INVALID_SIZE Invalid queue size and/or */
/* size of message */
/* NU_INVALID_MESSAGE Invalid message type */
/* NU_INVALID_SUSPEND Invalid suspend type */
/* */
/* HISTORY */
/* */
/* DATE REMARKS */
/* */
/* 03-01-1993 Created initial version 1.0 */
/* 04-19-1993 Verified version 1.0 */
/* 03-01-1994 Modified function interface, */
/* resulting in version 1.1 */
/* */
/* 03-18-1994 Verified version 1.1 */
/* */
/*************************************************************************/
STATUS QUCE_Create_Queue(NU_QUEUE *queue_ptr, CHAR *name,
VOID *start_address, UNSIGNED queue_size,
OPTION message_type, UNSIGNED message_size,
OPTION suspend_type)
{
QU_QCB *queue;
STATUS status;
INT overhead;
/* Move input queue pointer into internal pointer. */
queue = (QU_QCB *) queue_ptr;
/* Determine if queue supports variable length messages. If so, an
additional word of overhead is required. */
if (message_type == NU_VARIABLE_SIZE)
/* Variable-size queues require an additional word of overhead. */
overhead = 1;
else
/* Fixed-size message queues require no additional overhead. */
overhead = 0;
/* Determine if there is an error with the queue pointer. */
if ((queue == NU_NULL) || (queue -> qu_id == QU_QUEUE_ID))
/* Indicate that the queue pointer is invalid. */
status = NU_INVALID_QUEUE;
else if (start_address == NU_NULL)
/* Indicate that the starting address of the queue is invalid. */
status = NU_INVALID_MEMORY;
else if ((queue_size == 0) || (message_size == 0) ||
((message_size+overhead) > queue_size))
/* Indicate that one or both of the size parameters are invalid. */
status = NU_INVALID_SIZE;
else if ((message_type != NU_FIXED_SIZE) &&
(message_type != NU_VARIABLE_SIZE))
/* Indicate that the message type is invalid. */
status = NU_INVALID_MESSAGE;
else if ((suspend_type != NU_FIFO) && (suspend_type != NU_PRIORITY))
/* Indicate that the suspend type is invalid. */
status = NU_INVALID_SUSPEND;
else
/* All the parameters are okay, call the actual function to create
a queue. */
status = QUC_Create_Queue(queue_ptr, name, start_address, queue_size,
message_type, message_size, suspend_type);
/* Return completion status. */
return(status);
}
/*************************************************************************/
/* */
/* FUNCTION */
/* */
/* QUCE_Delete_Queue */
/* */
/* DESCRIPTION */
/* */
/* This function performs error checking on the parameter supplied */
/* to the queue delete function. */
/* */
/* CALLED BY */
/* */
/* Application */
/* */
/* CALLS */
/* */
/* QUC_Delete_Queue Actual delete queue function */
/* */
/* INPUTS */
/* */
/* queue_ptr Queue control block pointer */
/* */
/* OUTPUTS */
/* */
/* NU_INVALID_QUEUE Invalid queue pointer */
/* */
/* HISTORY */
/* */
/* DATE REMARKS */
/* */
/* 03-01-1993 Created initial version 1.0 */
/* 04-19-1993 Verified version 1.0 */
/* 03-01-1994 Modified function interface, */
/* resulting in version 1.1 */
/* */
/* 03-18-1994 Verified version 1.1 */
/* */
/*************************************************************************/
STATUS QUCE_Delete_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)
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