+
−/*************************************************************************/
+
−/*                                                                       */
+
−/*               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       */
+
−/*                                                                       */
+
−/*      pmf.c                                          Nucleus PLUS 1.14 */
+
−/*                                                                       */
+
−/* COMPONENT                                                             */
+
−/*                                                                       */
+
−/*      PM - Partition Memory Management                                 */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This file contains routines to obtain facts about the Partition  */
+
−/*      Memory Management component.                                     */
+
−/*                                                                       */
+
−/* DATA STRUCTURES                                                       */
+
−/*                                                                       */
+
−/*      None                                                             */
+
−/*                                                                       */
+
−/* FUNCTIONS                                                             */
+
−/*                                                                       */
+
−/*      PMF_Established_Partition_Pools     Number of partition pools    */
+
−/*      PMF_Partition_Pool_Pointers         Build partition pool pointer */
+
−/*                                            list                       */
+
−/*      PMF_Partition_Pool_Information      Retrieve partition pool info */
+
−/*                                                                       */
+
−/* DEPENDENCIES                                                          */
+
−/*                                                                       */
+
−/*      cs_extr.h                           Common Service functions     */
+
−/*      tc_extr.h                           Thread Control functions     */
+
−/*      pm_extr.h                           Partition functions          */
+
−/*      hi_extr.h                           History functions            */
+
−/*                                                                       */
+
−/* HISTORY                                                               */
+
−/*                                                                       */
+
−/*        DATE                    REMARKS                                */
+
−/*                                                                       */
+
−/*      03-01-1994      Initial version of partition fact                */
+
−/*                      service file, version 1.1                        */
+
−/*                                                                       */
+
−/*      03-18-1994      Verified version 1.1                             */
+
−/*      04-17-1996      updated to version 1.2                           */
+
−/*      11-18-1996      Protected Informational service                  */
+
−/*                      from NULL Control Block pointers                 */
+
−/*                      creating 1.2a. (SPR220)                          */
+
−/*      03-24-1998      Released version 1.3.                            */
+
−/*      03-26-1999      Released 1.11m (new release                      */
+
−/*                        numbering scheme)                              */
+
−/*      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        "pm_extr.h"                 /* Partition functions       */
+
−#include        "hi_extr.h"                 /* History functions         */
+
−
+
−
+
−/* Define external inner-component global data references.  */
+
−
+
−extern CS_NODE         *PMD_Created_Pools_List;
+
−extern UNSIGNED         PMD_Total_Pools;
+
−extern TC_PROTECT       PMD_List_Protect;
+
−
+
−
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FUNCTION                                                              */
+
−/*                                                                       */
+
−/*      PMF_Established_Partition_Pools                                  */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This function returns the current number of established          */
+
−/*      partition pools.  Pools previously deleted are no longer         */
+
−/*      considered established.                                          */
+
−/*                                                                       */
+
−/* CALLED BY                                                             */
+
−/*                                                                       */
+
−/*      Application                                                      */
+
−/*                                                                       */
+
−/* CALLS                                                                 */
+
−/*                                                                       */
+
−/*      [TCT_Check_Stack]                   Stack checking function      */
+
−/*                                                                       */
+
−/* INPUTS                                                                */
+
−/*                                                                       */
+
−/*      None                                                             */
+
−/*                                                                       */
+
−/* OUTPUTS                                                               */
+
−/*                                                                       */
+
−/*      PMD_Total_Pools                     Number of established        */
+
−/*                                            partition pools            */
+
−/*                                                                       */
+
−/* 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                             */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−UNSIGNED  PMF_Established_Partition_Pools(VOID)
+
−{
+
−
+
−
+
−#ifdef  NU_ENABLE_STACK_CHECK
+
−
+
−    /* Call stack checking function to check for an overflow condition.  */
+
−    TCT_Check_Stack();
+
−
+
−#endif
+
−
+
−    /* Return the number of established partition pools.  */
+
−    return(PMD_Total_Pools);
+
−}
+
−
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FUNCTION                                                              */
+
−/*                                                                       */
+
−/*      PMF_Partition_Pool_Pointers                                      */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This function builds a list of pool pointers, starting at        */
+
−/*      the specified location.  The number of pool pointers             */
+
−/*      placed in the list is equivalent to the total number of          */
+
−/*      pools or the maximum number of pointers specified in the         */
+
−/*      call.                                                            */
+
−/*                                                                       */
+
−/* CALLED BY                                                             */
+
−/*                                                                       */
+
−/*      Application                                                      */
+
−/*                                                                       */
+
−/* CALLS                                                                 */
+
−/*                                                                       */
+
−/*      [TCT_Check_Stack]                   Stack checking function      */
+
−/*      TCT_Protect                         Protect created list         */
+
−/*      TCT_Unprotect                       Release protection           */
+
−/*                                                                       */
+
−/* INPUTS                                                                */
+
−/*                                                                       */
+
−/*      pointer_list                        Pointer to the list area     */
+
−/*      maximum_pointers                    Maximum number of pointers   */
+
−/*                                                                       */
+
−/* OUTPUTS                                                               */
+
−/*                                                                       */
+
−/*      pointers                            Number of partition pools    */
+
−/*                                            placed in the list         */
+
−/* HISTORY                                                               */
+
−/*                                                                       */
+
−/*         DATE                    REMARKS                               */
+
−/*                                                                       */
+
−/*      03-01-1993      Created initial version 1.0                      */
+
−/*      04-19-1993      Verified version 1.0                             */
+
−/*      08-09-1993      Corrected pointer retrieval                      */
+
−/*                      loop, resulting in version 1.0a                  */
+
−/*      08-09-1993      Verified version 1.0a                            */
+
−/*      03-01-1994      Modified function interface,                     */
+
−/*                      resulting in version 1.1                         */
+
−/*                                                                       */
+
−/*      03-18-1994      Verified version 1.1                             */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−UNSIGNED  PMF_Partition_Pool_Pointers(NU_PARTITION_POOL **pointer_list,
+
−                                                UNSIGNED maximum_pointers)
+
−{
+
−CS_NODE         *node_ptr;                  /* Pointer to each PCB       */
+
−UNSIGNED         pointers;                  /* Number of pointers in list*/
+
−NU_SUPERV_USER_VARIABLES
+
−
+
−    /* Switch to supervisor mode */
+
−    NU_SUPERVISOR_MODE();
+
−
+
−#ifdef  NU_ENABLE_STACK_CHECK
+
−
+
−    /* Call stack checking function to check for an overflow condition.  */
+
−    TCT_Check_Stack();
+
−
+
−#endif
+
−
+
−    /* Initialize the number of pointers returned.  */
+
−    pointers =  0;
+
−
+
−    /* Protect against access to the list of created partition pools.  */
+
−    TCT_Protect(&PMD_List_Protect);
+
−
+
−    /* Loop until all pool pointers are in the list or until the maximum
+
−       list size is reached.  */
+
−    node_ptr =  PMD_Created_Pools_List;
+
−    while ((node_ptr) && (pointers < maximum_pointers))
+
−    {
+
−
+
−        /* Place the node into the destination list.  */
+
−        *pointer_list++ =  (NU_PARTITION_POOL *) node_ptr;
+
−
+
−        /* Increment the pointers variable.  */
+
−        pointers++;
+
−
+
−        /* Position the node pointer to the next node.  */
+
−        node_ptr =  node_ptr -> cs_next;
+
−
+
−        /* Determine if the pointer is at the head of the list.  */
+
−        if (node_ptr == PMD_Created_Pools_List)
+
−
+
−            /* The list search is complete.  */
+
−            node_ptr =  NU_NULL;
+
−    }
+
−
+
−    /* Release protection against access to the list of created pools. */
+
−    TCT_Unprotect();
+
−
+
−    /* Return to user mode */
+
−    NU_USER_MODE();
+
−
+
−    /* Return the number of pointers in the list.  */
+
−    return(pointers);
+
−}
+
−
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FUNCTION                                                              */
+
−/*                                                                       */
+
−/*      PMF_Partition_Pool_Information                                   */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This function returns information about the specified partition  */
+
−/*      pool.  However, if the supplied partition pool pointer is        */
+
−/*      invalid, the function simply returns an error status.            */
+
−/*                                                                       */
+
−/* CALLED BY                                                             */
+
−/*                                                                       */
+
−/*      Application                                                      */
+
−/*                                                                       */
+
−/* CALLS                                                                 */
+
−/*                                                                       */
+
−/*      [TCT_Check_Stack]                   Stack checking function      */
+
−/*      TCT_System_Protect                  Protect partition pool       */
+
−/*      TCT_Unprotect                       Release protection           */
+
−/*                                                                       */
+
−/* INPUTS                                                                */
+
−/*                                                                       */
+
−/*      pool_ptr                            Pointer to the partition pool*/
+
−/*      name                                Destination for the name     */
+
−/*      start_address                       Destination for the starting */
+
−/*                                            memory address of the pool */
+
−/*      pool_size                           Destination for the pool's   */
+
−/*                                            total size                 */
+
−/*      partition_size                      Destination for the size of  */
+
−/*                                            each partition             */
+
−/*      available                           Destination for the available*/
+
−/*                                            number of partitions       */
+
−/*      allocated                           Destination for the number   */
+
−/*                                            of allocated partitions    */
+
−/*      suspend_type                        Destination for the type of  */
+
−/*                                            suspension                 */
+
−/*      tasks_waiting                       Destination for the tasks    */
+
−/*                                            waiting count              */
+
−/*      first_task                          Destination for the pointer  */
+
−/*                                            to the first task waiting  */
+
−/*                                                                       */
+
−/* OUTPUTS                                                               */
+
−/*                                                                       */
+
−/*      NU_SUCCESS                          If a valid pool pointer      */
+
−/*                                            is supplied                */
+
−/*      NU_INVALID_POOL                     If pool pointer invalid      */
+
−/*                                                                       */
+
−/* 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                             */
+
−/*      11-18-1996      Corrected SPR220.                                */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−STATUS  PMF_Partition_Pool_Information(NU_PARTITION_POOL *pool_ptr, CHAR *name,
+
−                  VOID **start_address, UNSIGNED *pool_size,
+
−                  UNSIGNED *partition_size, UNSIGNED *available,
+
−                  UNSIGNED *allocated, OPTION *suspend_type,
+
−                  UNSIGNED *tasks_waiting, NU_TASK **first_task)
+
−{
+
−
+
−PM_PCB         *pool;                       /* Pool control block ptr    */
+
−INT             i;                          /* Working integer variable  */
+
−STATUS          completion;                 /* Completion status         */
+
−NU_SUPERV_USER_VARIABLES
+
−
+
−    /* Switch to superisor mode */
+
−    NU_SUPERVISOR_MODE();
+
−
+
−    /* Move input pool pointer into internal pointer.  */
+
−    pool =  (PM_PCB *) pool_ptr;
+
−
+
−
+
−#ifdef  NU_ENABLE_STACK_CHECK
+
−
+
−    /* Call stack checking function to check for an overflow condition.  */
+
−    TCT_Check_Stack();
+
−
+
−#endif
+
−
+
−    /* Determine if this partition pool id is valid.  */
+
−    if ((pool != NU_NULL) && (pool -> pm_id == PM_PARTITION_ID))
+
−    {
+
−
+
−        /* Setup protection of the partition pool.  */
+
−        TCT_System_Protect();
+
−
+
−        /* The partition pool pointer is valid.  Reflect this in the completion
+
−           status and fill in the actual information.  */
+
−        completion =  NU_SUCCESS;
+
−
+
−        /* Copy the partition pool's name.  */
+
−        for (i = 0; i < NU_MAX_NAME; i++)
+
−            *name++ =  pool -> pm_name[i];
+
−
+
−        /* Determine the suspension type.  */
+
−        if (pool -> pm_fifo_suspend)
+
−            *suspend_type =          NU_FIFO;
+
−        else
+
−            *suspend_type =          NU_PRIORITY;
+
−
+
−        /* Retrieve information directly out of the control structure.  */
+
−        *start_address =        pool -> pm_start_address;
+
−        *pool_size =            pool -> pm_pool_size;
+
−        *partition_size =       pool -> pm_partition_size;
+
−        *available =            pool -> pm_available;
+
−        *allocated =            pool -> pm_allocated;
+
−
+
−        /* Retrieve the number of tasks waiting and the pointer to the
+
−           first task waiting.  */
+
−        *tasks_waiting =  pool -> pm_tasks_waiting;
+
−        if (pool -> pm_suspension_list)
+
−
+
−            /* There is a task waiting.  */
+
−            *first_task =  (NU_TASK *)
+
−                (pool -> pm_suspension_list) -> pm_suspended_task;
+
−        else
+
−
+
−            /* There are no tasks waiting.  */
+
−            *first_task =  NU_NULL;
+
−
+
−        /* Release protection of the partition pool.  */
+
−        TCT_Unprotect();
+
−    }
+
−    else
+
−
+
−        /* Indicate that the partition pool pointer is invalid.   */
+
−        completion =  NU_INVALID_POOL;
+
−
+
−    /* Return to user mode */
+
−    NU_USER_MODE();
+
−
+
−    /* Return the appropriate completion status.  */
+
−    return(completion);
+
−}
+
−
+
−
+
−
+
−