pid.c

nucleus 2006 source code

/*************************************************************************/
/*                                                                       */
/*               Copyright Mentor Graphics Corporation 2004              */
/*                         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       */
/*                                                                       */
/*      pid.c                                          Nucleus PLUS 1.15 */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      PI - Pipe Management                                             */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains global data structures for use within the     */
/*      pipe management component.                                       */
/*                                                                       */
/* DATA STRUCTURES                                                       */
/*                                                                       */
/*      PID_Created_Pipe_List               Pointer to the linked-list   */
/*                                            of created pipes           */
/*      PID_Total_Pipes                     Total number of created      */
/*                                            pipes                      */
/*      PID_List_Protect                    Pipe list protection         */
/*                                                                       */
/* FUNCTIONS                                                             */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* DEPENDENCIES                                                          */
/*                                                                       */
/*      pi_defs.h                           Pipe Management constants    */
/*                                                                       */
/*************************************************************************/
#define         NU_SOURCE_FILE

#include        "plus/inc/pi_defs.h"        /* Pipe constants            */


/* PID_Created_Pipes_List is the head pointer of the linked list of
   created pipes.  If the list is NU_NULL, there are no pipes
   created.  */

CS_NODE        *PID_Created_Pipes_List;


/* PID_Total_Pipes contains the number of currently created
   pipes.  */

UNSIGNED        PID_Total_Pipes;


/* PID_List_Protect is a list protection structure used to block any other
   thread from access to the created pipe list.  */

TC_PROTECT      PID_List_Protect;