tcf.c

test file nucleus source

/*************************************************************************/
/*                                                                       */
/*               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       */
/*                                                                       */
/*      tcf.c                                          Nucleus PLUS 1.14 */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      TC - Thread Control                                              */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains information (fact) routines for the Thread    */
/*      Control component.                                               */
/*                                                                       */
/* DATA STRUCTURES                                                       */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* FUNCTIONS                                                             */
/*                                                                       */
/*      TCF_Established_Tasks               Number of created tasks      */
/*      TCF_Established_HISRs               Number of created HISRs      */
/*      TCF_Task_Pointers                   Build list of task pointers  */
/*      TCF_HISR_Pointers                   Build list of HISR pointers  */
/*      TCF_Task_Information                Retrieve task information    */
/*      TCF_HISR_Information                Retrieve HISR information    */
/*                                                                       */
/* DEPENDENCIES                                                          */
/*                                                                       */
/*      cs_extr.h                           Common Service functions     */
/*      tc_extr.h                           Thread Control functions     */
/*      in_extr.h                           Initialization/Interrupt     */
/*                                            functions                  */
/*      tm_extr.h                           Timer Control function       */
/*      er_extr.h                           Error handling function      */
/*      hi_extr.h                           History functions            */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         DATE                    REMARKS                               */
/*                                                                       */
/*      03-01-1994      Created initial version 1.1 from                 */
/*                        original 1.0g version of TCC.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        "in_extr.h"                 /* Initialization/Interrupt  */
                                            /*   functions               */
#include        "tm_extr.h"                 /* Timer control functions   */
#include        "er_extr.h"                 /* Error handling function   */
#include        "hi_extr.h"                 /* History functions         */


/* Define external inner-component global data references.  */

extern CS_NODE         *TCD_Created_Tasks_List;
extern UNSIGNED         TCD_Total_Tasks;
extern TC_TCB          *TCD_Priority_List[TC_PRIORITIES];
extern UNSIGNED         TCD_Priority_Groups;
extern DATA_ELEMENT     TCD_Sub_Priority_Groups[TC_MAX_GROUPS];
extern UNSIGNED_CHAR    TCD_Lowest_Set_Bit[];
extern INT              TCD_Highest_Priority;
extern TC_TCB          *TCD_Execute_Task;
extern VOID            *TCD_Current_Thread;
extern UNSIGNED_CHAR    TCD_Registered_LISRs[NU_MAX_VECTORS+1];
extern VOID           (*TCD_LISR_Pointers[NU_MAX_LISRS+1])(INT vector);
extern INT              TCD_Interrupt_Count;
extern INT              TCD_Stack_Switched;
extern TC_PROTECT       TCD_List_Protect;
extern TC_PROTECT       TCD_Schedule_Protect;
extern TC_PROTECT       TCD_LISR_Protect;
extern CS_NODE         *TCD_Created_HISRs_List;
extern UNSIGNED         TCD_Total_HISRs;
extern TC_PROTECT       TCD_HISR_Protect;
extern INT              TCD_Unhandled_Interrupt;


/* Define external inner-component function calls that are not available to
   other components.  */

VOID            TCT_Build_Task_Stack(TC_TCB *task_ptr);
VOID            TCT_Build_HISR_Stack(TC_HCB *hisr_ptr);
VOID            TCT_Build_Signal_Frame(TC_TCB *task_ptr);
VOID            TCT_Protect_Switch(TC_TCB *task);
VOID            TCT_Signal_Exit(VOID);



/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      TCF_Established_Tasks                                            */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function returns the current number of established tasks.   */
/*      Tasks previously deleted are no longer considered established.   */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      [TCT_Check_Stack]                   Stack checking function      */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      TCD_Total_Tasks                     Number of established tasks  */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         DATE                    REMARKS                               */
/*                                                                       */
/*      03-01-1993      Created initial version 1.0                      */
/*      04-19-1993      Verified version 1.0                             */
/*                                                                       */
/*************************************************************************/
UNSIGNED  TCF_Established_Tasks(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 tasks.  */
    return(TCD_Total_Tasks);
}


/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      TCF_Established_HISRs                                            */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function returns the current number of established HISRs.   */
/*      HISRs previously deleted are no longer considered established.   */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      [TCT_Check_Stack]                   Stack checking function      */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      TCD_Total_HISRs                     Number of established HISRs  */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         DATE                    REMARKS                               */
/*                                                                       */
/*      03-01-1993      Created initial version 1.0                      */
/*      04-19-1993      Verified version 1.0                             */
/*                                                                       */
/*************************************************************************/
UNSIGNED  TCF_Established_HISRs(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 HISRs.  */
    return(TCD_Total_HISRs);
}


/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      TCF_Task_Pointers                                                */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function builds a list of task pointers, starting at the    */