?? tci.c
字號(hào):
/*************************************************************************/
/* */
/* 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 */
/* */
/* tci.c Nucleus PLUS 1.14 */
/* */
/* COMPONENT */
/* */
/* TC - Thread Control */
/* */
/* DESCRIPTION */
/* */
/* This file contains the initialization routine for this */
/* component. */
/* */
/* DATA STRUCTURES */
/* */
/* None */
/* */
/* FUNCTIONS */
/* */
/* TCI_Initialize Thread Control Initialization*/
/* */
/* DEPENDENCIES */
/* */
/* tc_defs.h Thread Control constants */
/* */
/* HISTORY */
/* */
/* DATE REMARKS */
/* */
/* 03-01-1993 Created initial version 1.0 */
/* 04-19-1993 Verified version 1.0 */
/* 08-09-1993 Corrected problem initializing */
/* the LISR association table, */
/* resulting in version 1.0a */
/* 08-09-1993 Verified version 1.0a */
/* 03-01-1994 Changed to initialize the system */
/* protection rather than the */
/* schedule protection, resulting */
/* in version 1.1 */
/* */
/* 03-18-1994 Verified version 1.1 */
/* 04-17-1996 updated to version 1.2 */
/* 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_defs.h" /* Common Service constants */
#include "tc_defs.h" /* Thread Control constants */
#include "tc_extr.h" /* Thread Control interfaces */
/* 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 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_System_Protect;
extern TC_PROTECT TCD_LISR_Protect;
extern CS_NODE *TCD_Created_HISRs_List;
extern UNSIGNED TCD_Total_HISRs;
extern TC_HCB *TCD_Active_HISR_Heads[TC_HISR_PRIORITIES];
extern TC_HCB *TCD_Active_HISR_Tails[TC_HISR_PRIORITIES];
extern TC_HCB *TCD_Execute_HISR;
extern TC_PROTECT TCD_HISR_Protect;
extern INT TCD_Interrupt_Level;
/*************************************************************************/
/* */
/* FUNCTION */
/* */
/* TCI_Initialize */
/* */
/* DESCRIPTION */
/* */
/* This function initializes the data structures that control the */
/* operation of the TC component. The system is initialized as */
/* idle. This routine must be executed from Supervisor mode in */
/* Supervisor/User mode switching kernels. */
/* */
/* CALLED BY */
/* */
/* INC_Initialize System initialization */
/* */
/* CALLS */
/* */
/* None */
/* */
/* INPUTS */
/* */
/* None */
/* */
/* OUTPUTS */
/* */
/* TCD_Created_Tasks_List List of created tasks */
/* TCD_Total_Tasks Number of created tasks */
/* TCD_Priority_List Ready task array */
/* TCD_Priority_Groups Ready priority group bit map */
/* TCD_Sub_Priority_Groups Sub-priority groups bit map */
/* TCD_Highest_Priority Highest priority task */
/* TCD_Execute_Task Top priority task to execute */
/* TCD_Created_HISRs_List List of created HISRs */
/* TCD_Total_HISRs Number of created HISRs */
/* TCD_Active_HISR_Heads Active HISR list head ptrs */
/* TCD_Active_HISR_Tails Active HISR list tail ptrs */
/* TCD_Execute_HISR Top priority HISR to execute */
/* TCD_Current_Thread Current thread pointer */
/* TCD_Registered_LISRs Registered LISRs list */
/* TCD_LISR_Pointers Pointers to active LISRs */
/* TCD_Interrupt_Count Interrupt in progress counter*/
/* TCD_Stack_Switched Interrupt stack switched flag*/
/* TCD_List_Protect Protection of task list */
/* TCD_Schedule_Protect Protection of scheduling */
/* data structures. */
/* TCD_HISR_Protect Protection of created HISR */
/* list */
/* TCD_Interrupt_Level Enable interrupt level */
/* */
/* HISTORY */
/* */
/* DATE REMARKS */
/* */
/* 03-01-1993 Created initial version 1.0 */
/* 04-19-1993 Verified version 1.0 */
/* 08-09-1993 Corrected problem initializing */
/* the LISR association table, */
/* resulting in version 1.0a */
/* 08-09-1993 Verified version 1.0a */
/* 03-01-1994 Changed to initialize the system */
/* protection rather than the */
/* schedule protection, resulting */
/* in version 1.1 */
/* */
/* 03-18-1994 Verified version 1.1 */
/* */
/*************************************************************************/
VOID TCI_Initialize(VOID)
{
int i; /* Working index variable */
/* Initialize the created task list to NU_NULL. */
TCD_Created_Tasks_List = NU_NULL;
/* Initialize the total number of created tasks to 0. */
TCD_Total_Tasks = 0;
/* Initialize the array of ready task lists. */
for (i = 0; i < TC_PRIORITIES; i++)
TCD_Priority_List[i] = 0;
/* Initialize the bit maps that represent that at least one task is
ready at the same priority level. */
TCD_Priority_Groups = 0;
for (i = 0; i < TC_MAX_GROUPS; i++)
TCD_Sub_Priority_Groups[i] = 0;
/* Initialize the highest priority flag. */
TCD_Highest_Priority = TC_PRIORITIES;
/* Initialize pointers to the task to execute, HISR to execute,
and current thread of execution. */
TCD_Execute_Task = NU_NULL;
TCD_Execute_HISR = NU_NULL;
TCD_Current_Thread = NU_NULL;
/* Initialize the created HISRs list to NU_NULL. */
TCD_Created_HISRs_List = NU_NULL;
/* Initialize the total number of created HISRs to 0. */
TCD_Total_HISRs = 0;
/* Initialize the array of ready HISR list pointers. */
for (i = 0; i < TC_HISR_PRIORITIES; i++)
{
TCD_Active_HISR_Heads[i] = NU_NULL;
TCD_Active_HISR_Tails[i] = NU_NULL;
}
/* Initialize the LISR interrupt control data structures. */
for (i = 0; i <= NU_MAX_VECTORS; i++)
TCD_Registered_LISRs[i] = NU_FALSE;
for (i = 0; i <= NU_MAX_LISRS; i++)
TCD_LISR_Pointers[i] = NU_NULL;
/* Initialize the interrupt processing variables. */
TCD_Interrupt_Count = 0;
TCD_Stack_Switched = 0;
/* Initialize the task control protection structures. */
TCD_List_Protect.tc_tcb_pointer = NU_NULL;
TCD_System_Protect.tc_tcb_pointer = NU_NULL;
TCD_LISR_Protect.tc_tcb_pointer = NU_NULL;
TCD_HISR_Protect.tc_tcb_pointer = NU_NULL;
/* Initialize the interrupt level to enable all interrupts. */
TCD_Interrupt_Level = NU_ENABLE_INTERRUPTS;
}
?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號(hào)
Ctrl + =
減小字號(hào)
Ctrl + -