+
−/*************************************************************************/
+
−/*                                                                       */
+
−/*               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       */
+
−/*                                                                       */
+
−/*      tmf.c                                          Nucleus PLUS 1.14 */
+
−/*                                                                       */
+
−/* COMPONENT                                                             */
+
−/*                                                                       */
+
−/*      TM - Timer Management                                            */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This file contains information (fact) routines for the Timer     */
+
−/*      Management component.                                            */
+
−/*                                                                       */
+
−/* DATA STRUCTURES                                                       */
+
−/*                                                                       */
+
−/*      None                                                             */
+
−/*                                                                       */
+
−/* FUNCTIONS                                                             */
+
−/*                                                                       */
+
−/*      TMF_Established_Timers              Number of established timers */
+
−/*      TMF_Timer_Pointers                  Return list of application   */
+
−/*                                            timer pointers             */
+
−/*      TMF_Timer_Information               Return information about the */
+
−/*                                              application timer        */
+
−/*                                                                       */
+
−/*      TMF_Get_Remaining_Time              Return remaining timer until */
+
−/*                                          a timer expires              */
+
−/*                                                                       */
+
−/* DEPENDENCIES                                                          */
+
−/*                                                                       */
+
−/*      cs_extr.h                           Common Service functions     */
+
−/*      tc_extr.h                           Thread Control functions     */
+
−/*      tm_extr.h                           Timer functions              */
+
−/*      hi_extr.h                           History functions            */
+
−/*                                                                       */
+
−/* HISTORY                                                               */
+
−/*                                                                       */
+
−/*        DATE                    REMARKS                                */
+
−/*                                                                       */
+
−/*      03-01-1994      Created initial version 1.1 from                 */
+
−/*                      previous version of TMC.C                        */
+
−/*                                                                       */
+
−/*      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        "tm_extr.h"                 /* Timer functions           */
+
−#include        "hi_extr.h"                 /* History functions         */
+
−
+
−
+
−/* Define external inner-component global data references.  */
+
−
+
−extern CS_NODE        *TMD_Created_Timers_List;
+
−extern UNSIGNED        TMD_Total_Timers;
+
−extern TM_TCB         *TMD_Active_Timers_List;
+
−extern INT             TMD_Active_List_Busy;
+
−extern TC_PROTECT      TMD_Created_List_Protect;
+
−
+
−
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FUNCTION                                                              */
+
−/*                                                                       */
+
−/*      TMF_Established_Timers                                           */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This function returns the current number of established          */
+
−/*      timers.  Timers previously deleted are no longer considered      */
+
−/*      established.                                                     */
+
−/*                                                                       */
+
−/* CALLED BY                                                             */
+
−/*                                                                       */
+
−/*      Application                                                      */
+
−/*                                                                       */
+
−/* CALLS                                                                 */
+
−/*                                                                       */
+
−/*      [TCT_Check_Stack]                   Stack checking function      */
+
−/*                                                                       */
+
−/* INPUTS                                                                */
+
−/*                                                                       */
+
−/*      None                                                             */
+
−/*                                                                       */
+
−/* OUTPUTS                                                               */
+
−/*                                                                       */
+
−/*      TMD_Total_Timers                    Number of established        */
+
−/*                                            timers                     */
+
−/*                                                                       */
+
−/* HISTORY                                                               */
+
−/*                                                                       */
+
−/*         DATE                    REMARKS                               */
+
−/*                                                                       */
+
−/*      03-01-1993      Created initial version 1.0                      */
+
−/*      04-19-1993      Verified version 1.0                             */
+
−/*      03-01-1994      Changed function interface,                      */
+
−/*                      resulting in version 1.1                         */
+
−/*                                                                       */
+
−/*      03-18-1994      Verified version 1.1                             */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−UNSIGNED  TMF_Established_Timers(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 timers.  */
+
−    return(TMD_Total_Timers);
+
−}
+
−
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FUNCTION                                                              */
+
−/*                                                                       */
+
−/*      TMF_Timer_Pointers                                               */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This function builds a list of timer pointers, starting at the   */
+
−/*      specified location.  The number of timer pointers placed in      */
+
−/*      the list is equivalent to the total number of timers 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 timers 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 problem in pointer                     */
+
−/*                      retrieval loop, resulting in                     */
+
−/*                      version 1.0a                                     */
+
−/*      08-09-1993      Verified version 1.0a                            */
+
−/*      03-01-1994      Changed function interface,                      */
+
−/*                      resulting in version 1.1                         */
+
−/*                                                                       */
+
−/*      03-18-1994      Verified version 1.1                             */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−UNSIGNED  TMF_Timer_Pointers(NU_TIMER **pointer_list,
+
−                                                UNSIGNED maximum_pointers)
+
−{
+
−
+
−CS_NODE         *node_ptr;                  /* Pointer to each TCB       */
+
−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 timers.  */
+
−    TCT_Protect(&TMD_Created_List_Protect);
+
−
+
−    /* Loop until all timer pointers are in the list or until the maximum
+
−       list size is reached.  */
+
−    node_ptr =  TMD_Created_Timers_List;
+
−    while ((node_ptr) && (pointers < maximum_pointers))
+
−    {
+
−
+
−        /* Place the node into the destination list.  */
+
−        *pointer_list++ =  (NU_TIMER *) 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 == TMD_Created_Timers_List)
+
−
+
−            /* The list search is complete.  */
+
−            node_ptr =  NU_NULL;
+
−    }
+
−
+
−    /* Release protection against access to the list of created timers.  */
+
−    TCT_Unprotect();
+
−
+
−    /* Return to user mode */
+
−    NU_USER_MODE();
+
−
+
−    /* Return the number of pointers in the list.  */
+
−    return(pointers);
+
−}
+
−
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FUNCTION                                                              */
+
−/*                                                                       */
+
−/*      TMF_Timer_Information                                            */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This function returns information about the specified timer.     */
+
−/*      However, if the supplied timer pointer is invalid, the           */
+
−/*      function simply returns an error status.                         */
+
−/*                                                                       */
+
−/* CALLED BY                                                             */
+
−/*                                                                       */
+
−/*      Application                                                      */
+
−/*                                                                       */
+
−/* CALLS                                                                 */
+
−/*                                                                       */
+
−/*      [TCT_Check_Stack]                   Stack checking function      */
+
−/*      TCT_System_Protect                  Protect active timer         */
+
−/*      TCT_Unprotect                       Release protection           */
+
−/*                                                                       */
+
−/* INPUTS                                                                */
+
−/*                                                                       */
+
−/*      timer_ptr                           Pointer to the timer         */
+
−/*      name                                Destination for the name     */
+
−/*      enable                              Destination for the enable   */
+
−/*                                            posture                    */
+
−/*      expirations                         Destination for the total    */
+
−/*                                            number of expirations      */
+
−/*      id                                  Destination for the timer id */
+
−/*      initial_time                        Destination for the initial  */
+
−/*                                            time                       */
+
−/*      reschedule_time                     Destination for the          */
+
−/*                                            reschedule time            */
+
−/*                                                                       */
+
−/* OUTPUTS                                                               */
+
−/*                                                                       */
+
−/*      NU_SUCCESS                          If a valid timer pointer     */
+
−/*                                            is supplied                */
+
−/*      NU_INVALID_TIMER                    If timer pointer invalid     */
+
−/*                                                                       */
+
−/* HISTORY                                                               */
+
−/*                                                                       */
+
−/*        DATE                    REMARKS                                */
+
−/*                                                                       */
+
−/*      03-01-1993      Created initial version 1.0                      */
+
−/*      04-19-1993      Verified version 1.0                             */
+
−/*      08-09-1993      Corrected problem that caused an                 */
+
−/*                      invalid application timer ID                     */
+
−/*                      to be returned to the caller,                    */
+
−/*                      resulting in version 1.0a                        */
+
−/*      08-09-1993      Verified version 1.0a                            */
+
−/*      03-01-1994      Changed function interface,                      */
+
−/*                      resulting in version 1.1                         */
+
−/*                                                                       */
+
−/*      03-18-1994      Verified version 1.1                             */
+
−/*      11-18-1996      Corrected SPR220.                                */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−STATUS  TMF_Timer_Information(NU_TIMER *timer_ptr, CHAR *name,
+
−                  OPTION *enable, UNSIGNED *expirations, UNSIGNED *id,
+
−                  UNSIGNED *initial_time, UNSIGNED *reschedule_time)
+
−{
+
−
+
−TM_APP_TCB     *timer;                      /* Timer control block ptr   */
+
−INT             i;                          /* Working integer variable  */
+
−STATUS          completion;                 /* Completion status         */
+
−NU_SUPERV_USER_VARIABLES
+
−
+
−    /* Switch to supervisor mode */
+
−    NU_SUPERVISOR_MODE();
+
−
+
−    /* Move input timer pointer into internal pointer.  */
+
−    timer =  (TM_APP_TCB *) timer_ptr;
+
−
+
−
+
−#ifdef  NU_ENABLE_STACK_CHECK
+
−
+
−    /* Call stack checking function to check for an overflow condition.  */
+
−    TCT_Check_Stack();
+
−
+
−#endif
+
−
+
−    /* Protect the active list.  */
+
−    TCT_System_Protect();
+
−
+
−    /* Determine if this timer ID is valid.  */
+
−    if ((timer != NU_NULL) && (timer -> tm_id == TM_TIMER_ID))
+
−    {
+
−
+
−        /* The timer pointer is valid.  Reflect this in the completion
+
−           status and fill in the actual information.  */
+
−        completion =  NU_SUCCESS;
+
−
+
−        /* Copy the timer's name.  */
+
−        for (i = 0; i < NU_MAX_NAME; i++)
+
−            *name++ =  timer -> tm_name[i];
+
−
+
−        /* Determine if the timer is enabled or disabled.  */
+
−        if (timer -> tm_enabled)
+
−
+
−            *enable =  NU_ENABLE_TIMER;
+
−        else
+
−
+
−            *enable =  NU_DISABLE_TIMER;
+
−
+
−        /* Fill in the remaining information.  */
+
−        *expirations =          timer -> tm_expirations;
+
−        *id =                   timer -> tm_expiration_id;
+
−        *initial_time =         timer -> tm_initial_time;
+
−        *reschedule_time =      timer -> tm_reschedule_time;
+
−    }
+
−    else
+
−
+
−        /* Indicate that the timer pointer is invalid.   */
+
−        completion =  NU_INVALID_TIMER;
+
−
+
−    /* Release protection.  */
+
−    TCT_Unprotect();
+
−
+
−    /* Return to user mode */
+
−    NU_USER_MODE();
+
−
+
−    /* Return the appropriate completion status.  */
+
−    return(completion);
+
−}
+
−
+
−
+
−/*************************************************************************/
+
−/*                                                                       */
+
−/* FUNCTION                                                              */
+
−/*                                                                       */
+
−/*      TMF_Get_Remaining_Time                                           */
+
−/*                                                                       */
+
−/* DESCRIPTION                                                           */
+
−/*                                                                       */
+
−/*      This function returns the remaining time before expiration for   */
+
−/*      the specified timer.                                             */
+
−/*                                                                       */
+
−/*                                                                       */
+
−/* CALLED BY                                                             */
+
−/*                                                                       */
+
−/*      Application                                                      */
+
−/*                                                                       */
+
−/* CALLS                                                                 */
+
−/*                                                                       */
+
−/*      TCT_System_Protect                  Protect active timer         */
+
−/*      TCT_Unprotect                       Release protection           */
+
−/*                                                                       */
+
−/* INPUTS                                                                */
+
−/*                                                                       */
+
−/*      timer_ptr                           Pointer to the timer         */
+
−/*                                                                       */
+
−/* OUTPUTS                                                               */
+
−/*                                                                       */
+
−/*      remaining_time                      time until timer expiration  */
+
−/*                                                                       */
+
−/*      NU_INVALID_TIMER                    If timer pointer invalid     */
+
−/*                                                                       */
+
−/* HISTORY                                                               */
+
−/*                                                                       */
+
−/*         DATE                    REMARKS                               */
+
−/*                                                                       */
+
−/*       07-02-1998               Created service call                   */
+
−/*                                                                       */
+
−/*************************************************************************/
+
−
+
−
+
−STATUS  TMF_Get_Remaining_Time(NU_TIMER *timer_ptr, UNSIGNED *remaining_time)
+
−{
+
−R1  TM_APP_TCB  *timer;
+
−    TM_TCB      *real_TCB;
+
−    TM_TCB      *list_ptr;
+
−    INT         done = 0;
+
−    STATUS      status;
+
−    NU_SUPERV_USER_VARIABLES
+
−
+
−    /* Switch to supervisor mode */
+
−    NU_SUPERVISOR_MODE();
+
−
+
−    /* Protect against simultaneous access to the active timers list*/
+
−    TCT_System_Protect();
+
−
+
−    list_ptr = TMD_Active_Timers_List;
+
−
+
−    /* Get the application timer Control Block */
+
−    timer = (TM_APP_TCB*) timer_ptr;
+
−
+
−
+
−    /* Determine if this timer ID is valid.  */
+
−    if ((timer != NU_NULL) && (timer -> tm_id == TM_TIMER_ID))
+
−    {
+
−        /* The timer pointer is valid.  Reflect this in the completion
+
−           status and fill in the actual information.  */
+
−        status =  NU_SUCCESS;
+
−
+
−        /* Get the actual timer Control block */
+
−        real_TCB = &(timer->tm_actual_timer);
+
−
+
−        if (list_ptr == real_TCB)
+
−            *remaining_time = list_ptr -> tm_remaining_time;
+
−        else
+
−        {
+
−            if( list_ptr == NU_NULL)        /* in case no active timers exist */
+
−                *remaining_time = 0;
+
−            else
+
−            {
+
−
+
−            *remaining_time = list_ptr -> tm_remaining_time;
+
−
+
−            do
+
−            {
+
−                /* Move the list pointer to the next timer in the list.  */
+
−                list_ptr =  list_ptr -> tm_next_timer;
+
−
+
−                *remaining_time += list_ptr -> tm_remaining_time;
+
−
+
−                /* Check to see if we have gotten to the specified timer yet */
+
−                if (list_ptr == real_TCB)
+
−                    /* Searching is done.  */
+
−                    done =  NU_TRUE;
+
−
+
−            }while (!done);
+
−        }
+
−    }
+
−    }
+
−    else
+
−        /* Indicate that the timer pointer is invalid.   */
+
−        status =  NU_INVALID_TIMER;
+
−
+
−    TCT_Unprotect();
+
−
+
−    /* Return to user mode */
+
−    NU_USER_MODE();
+
−
+
−    return (status);
+
−}
+
−
+
−
+
−
+
−