+
−/*************************************************************************/
+
−/*                                                                       */
+
−/*        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          */
+
−/*                                                                       */
+
−/*      pi_defs.h                                       PLUS  1.2        */
+
−/*                                                                       */
+
−/* COMPONENT                                                             */
+
−/*                                                                       */
+
−/*      PI - Pipe Management                                             */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This file contains data structure definitions and constants for  */
+
−/*      the message Pipe component.                                      */
+
−/*                                                                       */
+
−/* AUTHOR                                                                */
+
−/*                                                                       */
+
−/*      William E. Lamie, Accelerated Technology, Inc.                   */
+
−/*                                                                       */
+
−/* DATA STRUCTURES                                                       */
+
−/*                                                                       */
+
−/*      PI_PCB                              Pipe control block           */
+
−/*      PI_SUSPEND                          Pipe suspension block        */
+
−/*                                                                       */
+
−/* FUNCTIONS                                                             */
+
−/*                                                                       */
+
−/*      None                                                             */
+
−/*                                                                       */
+
−/* DEPENDENCIES                                                          */
+
−/*                                                                       */
+
−/*      cs_defs.h                           Common service definitions   */
+
−/*      tc_defs.h                           Thread Control definitions   */
+
−/*                                                                       */
+
−/* 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      Moved include files outside of   */
+
−/*                                        the file #ifndef to allow the  */
+
−/*                                        use of actual data structures, */
+
−/*                                        removed protection structure,  */
+
−/*                                        put padding into structure,    */
+
−/*                                        resulting in version 1.1       */
+
−/*      R. Pfaff -                                                       */
+
−/*      D. Lamie        03-18-1994      Verified version 1.1             */
+
−/*      M.Q. Qian       04-17-1996      updated to version 1.2           */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−
+
−#include        "cs_defs.h"                 /* Common service constants  */
+
−#include        "tc_defs.h"                 /* Thread control constants  */
+
−
+
−
+
−/* Check to see if the file has been included already.  */
+
−
+
−#ifndef PI_DEFS
+
−#define PI_DEFS
+
−
+
−
+
−/* Define constants local to this component.  */
+
−
+
−#define         PI_PIPE_ID              0x50495045UL
+
−
+
−
+
−/* Define the Pipe Control Block data type.  */
+
−
+
−typedef struct PI_PCB_STRUCT 
+
−{
+
−    CS_NODE             pi_created;            /* Node for linking to    */
+
−                                               /*   created pipe list    */
+
−    UNSIGNED            pi_id;                 /* Internal PCB ID        */
+
−    CHAR                pi_name[NU_MAX_NAME];  /* Pipe name              */
+
−    DATA_ELEMENT        pi_fixed_size;         /* Fixed-size messages?   */
+
−    DATA_ELEMENT        pi_fifo_suspend;       /* Suspension type flag   */
+
−#if     PAD_2
+
−    DATA_ELEMENT        pi_padding[PAD_2];
+
−#endif
+
−    UNSIGNED            pi_pipe_size;          /* Total size of pipe     */
+
−    UNSIGNED            pi_messages;           /* Messages in pipe       */
+
−    UNSIGNED            pi_message_size;       /* Size of each message   */
+
−    UNSIGNED            pi_available;          /* Available bytes        */
+
−    BYTE_PTR            pi_start;              /* Start of pipe area     */
+
−    BYTE_PTR            pi_end;                /* End of pipe area + 1   */
+
−    BYTE_PTR            pi_read;               /* Read pointer           */
+
−    BYTE_PTR            pi_write;              /* Write pointer          */
+
−    UNSIGNED            pi_tasks_waiting;      /* Number of waiting tasks*/
+
−    struct PI_SUSPEND_STRUCT
+
−                       *pi_urgent_list;        /* Urgent message suspend */
+
−    struct PI_SUSPEND_STRUCT
+
−                       *pi_suspension_list;    /* Suspension list        */
+
−} PI_PCB;    
+
−
+
−
+
−/* Define the Pipe suspension structure.  This structure is allocated off of
+
−   the caller's stack.  */
+
−   
+
−typedef struct PI_SUSPEND_STRUCT
+
−{
+
−    CS_NODE             pi_suspend_link;       /* Link to suspend blocks */
+
−    PI_PCB             *pi_pipe;               /* Pointer to the pipe    */
+
−    TC_TCB             *pi_suspended_task;     /* Task suspended         */
+
−    BYTE_PTR            pi_message_area;       /* Pointer to message area*/
+
−    UNSIGNED            pi_message_size;       /* Message size requested */
+
−    UNSIGNED            pi_actual_size;        /* Actual size of message */
+
−    STATUS              pi_return_status;      /* Return status          */
+
−} PI_SUSPEND;
+
−
+
−#endif