www.pudn.com > os.rar > tc_extr.h
/*************************************************************************/
/* */
/* 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 */
/* */
/* tc_extr.h Nucleus PLUS 1.15 */
/* */
/* COMPONENT */
/* */
/* TC - Thread Control */
/* */
/* DESCRIPTION */
/* */
/* This file contains function prototypes of all functions */
/* accessible to other components. */
/* */
/* DATA STRUCTURES */
/* */
/* None */
/* */
/* DEPENDENCIES */
/* */
/* tc_defs.h Thread Control constants */
/* */
/*************************************************************************/
#include "plus/inc/tc_defs.h" /* Include TC constants */
/* Check to see if the file has been included already. */
#ifndef TC_EXTR
#define TC_EXTR
/* Define external reference for the system protection. */
extern TC_PROTECT TCD_System_Protect;
extern VOID *TCD_Current_Thread;
/* Initialization functions. */
VOID TCI_Initialize(VOID);
/* Core error checking functions. */
#ifndef NU_NO_ERROR_CHECKING
BOOLEAN TCC_Validate_Resume(OPTION resume_type, NU_TASK *task_ptr);
#endif
STATUS TCCE_Activate_HISR(NU_HISR *hisr_ptr);
STATUS TCCE_Create_Task(NU_TASK *task_ptr, CHAR *name,
VOID (*task_entry)(UNSIGNED, VOID *), UNSIGNED argc,
VOID *argv, VOID *stack_address, UNSIGNED stack_size,
OPTION priority, UNSIGNED time_slice,
OPTION preempt, OPTION auto_start);
STATUS TCCE_Reset_Task(NU_TASK *task_ptr, UNSIGNED argc, VOID *argv);
STATUS TCCE_Create_HISR(NU_HISR *hisr_ptr, CHAR *name,
VOID (*hisr_entry)(VOID), OPTION priority,
VOID *stack_address, UNSIGNED stack_size);
STATUS TCCE_Terminate_Task(NU_TASK *task_ptr);
STATUS TCCE_Delete_Task(NU_TASK *task_ptr);
STATUS TCCE_Delete_HISR(NU_HISR *hisr_ptr);
STATUS TCCE_Resume_Service(NU_TASK *task_ptr);
STATUS TCCE_Suspend_Service(NU_TASK *task_ptr);
VOID TCCE_Relinquish(VOID);
VOID TCCE_Task_Sleep(UNSIGNED ticks);
STATUS TCCE_Validate_Resume(OPTION resume_type, NU_TASK *task_ptr);
INT TCCE_Suspend_Error(VOID);
STATUS TCFE_Task_Information(NU_TASK *task_ptr, CHAR *name,
DATA_ELEMENT *status, UNSIGNED *scheduled_count,
DATA_ELEMENT *priority, OPTION *preempt, UNSIGNED *time_slice,
VOID **stack_base, UNSIGNED *stack_size,
UNSIGNED *minimum_stack);
/* Supplemental error checking functions. */
OPTION TCSE_Change_Priority(NU_TASK *task_ptr, OPTION new_priority);
OPTION TCSE_Change_Preemption(OPTION preempt);
UNSIGNED TCSE_Change_Time_Slice(NU_TASK *task_ptr, UNSIGNED time_slice);
UNSIGNED TCSE_Control_Signals(UNSIGNED signal_enable_mask);
UNSIGNED TCSE_Receive_Signals(VOID);
STATUS TCSE_Register_Signal_Handler(VOID (*signal_handler)(UNSIGNED));
STATUS TCSE_Send_Signals(NU_TASK *task_ptr, UNSIGNED signals);
/* Core processing functions. */
STATUS TCT_Activate_HISR(NU_HISR *hisr_ptr);
STATUS TCC_Create_Task(NU_TASK *task_ptr, CHAR *name,
VOID (*task_entry)(UNSIGNED, VOID *), UNSIGNED argc,
VOID *argv, VOID *stack_address, UNSIGNED stack_size,
OPTION priority, UNSIGNED time_slice,
OPTION preempt, OPTION auto_start);
STATUS TCC_Reset_Task(NU_TASK *task_ptr, UNSIGNED argc, VOID *argv);
STATUS TCC_Create_HISR(NU_HISR *hisr_ptr, CHAR *name,
VOID (*hisr_entry)(VOID), OPTION priority,
VOID *stack_address, UNSIGNED stack_size);
STATUS TCC_Terminate_Task(NU_TASK *task_ptr);
STATUS TCC_Delete_Task(NU_TASK *task_ptr);
STATUS TCC_Delete_HISR(NU_HISR *hisr_ptr);
STATUS TCC_Resume_Task(NU_TASK *task_ptr, OPTION suspend_type);
STATUS TCC_Resume_Service(NU_TASK *task_ptr);
VOID TCC_Suspend_Task(NU_TASK *task_ptr, OPTION suspend_type,
VOID (*cleanup)(VOID *),
VOID *information, UNSIGNED timeout);
STATUS TCC_Suspend_Service(NU_TASK *task_ptr);
VOID TCC_Task_Timeout(NU_TASK *task_ptr);
VOID TCC_Task_Sleep(UNSIGNED ticks);
VOID TCC_Relinquish(VOID);
VOID TCC_Time_Slice(NU_TASK *task_ptr);
NU_TASK *TCC_Current_Task_Pointer(VOID);
NU_HISR *TCC_Current_HISR_Pointer(VOID);
VOID TCC_Dispatch_LISR(INT vector);
STATUS TCC_Register_LISR(INT vector, VOID (*new_lisr)(INT),
VOID (**old_lisr)(INT));
/* Supplemental functions. */
OPTION TCS_Change_Priority(NU_TASK *task_ptr, OPTION new_priority);
OPTION TCS_Change_Preemption(OPTION preempt);
UNSIGNED TCS_Change_Time_Slice(NU_TASK *task_ptr, UNSIGNED time_slice);
UNSIGNED TCS_Control_Signals(UNSIGNED signal_enable_mask);
UNSIGNED TCS_Receive_Signals(VOID);
STATUS TCS_Register_Signal_Handler(VOID (*signal_handler)(UNSIGNED));
STATUS TCS_Send_Signals(NU_TASK *task, UNSIGNED signals);
/* Information retrieval functions. */
UNSIGNED TCF_Established_Tasks(VOID);
UNSIGNED TCF_Established_HISRs(VOID);
STATUS TCF_Task_Information(NU_TASK *task, CHAR *name,
DATA_ELEMENT *status, UNSIGNED *scheduled_count,
OPTION *priority, OPTION *preempt,
UNSIGNED *time_slice, VOID **stack_base,
UNSIGNED *stack_size, UNSIGNED *minimum_stack);
STATUS TCF_HISR_Information(NU_HISR *hisr, CHAR *name,
UNSIGNED *scheduled_count, DATA_ELEMENT *priority,
VOID **stack_base, UNSIGNED *stack_size,
UNSIGNED *minimum_stack);
UNSIGNED TCF_Task_Pointers(NU_TASK **pointer_list,
UNSIGNED maximum_pointers);
UNSIGNED TCF_HISR_Pointers(NU_HISR **pointer_list,
UNSIGNED maximum_pointers);
/* Target dependent functions. */
UNSIGNED TCT_Check_Stack(VOID);
VOID TCT_Schedule(VOID);
VOID TCT_Restore_Interrupts(VOID);
VOID TCT_Protect(TC_PROTECT *protect);
VOID TCT_Unprotect(VOID);
VOID TCT_Unprotect_Specific(TC_PROTECT *protect);
VOID TCT_Set_Current_Protect(TC_PROTECT *protect);
VOID TCT_Control_To_System(VOID);
INT TCT_Control_Interrupts(INT new_level);
INT TCT_Local_Control_Interrupts(INT new_level);
#ifdef NU_ENABLE_STACK_CHECK
#define NU_CHECK_STACK() TCT_Check_Stack()
#else /* no stack checking */
#define NU_CHECK_STACK() ((void)0)
#endif /* NU_ENABLE_STACK_CHECK */
/* Determine if pointers are accessible with a single instruction. If so,
just reference the pointer directly. Otherwise, call the assembly
service. */
#if NU_POINTER_ACCESS == 1
extern TC_TCB *TCD_Execute_Task;
#define TCT_Current_Thread() TCD_Current_Thread
#define TCT_Set_Execute_Task(task) TCD_Execute_Task = task
#else
VOID *TCT_Current_Thread(VOID);
VOID TCT_Set_Execute_Task(TC_TCB *task);
#endif
/* Define pseudo function used by internal components of the system. */
#define TCT_System_Protect() TCT_Protect(&TCD_System_Protect)
#define TCT_System_Unprotect() \
TCT_Unprotect_Specific(&TCD_System_Protect)
#define TCT_Set_Suspend_Protect(protect) \
((TC_TCB *) TCD_Current_Thread) -> tc_suspend_protect = \
(TC_PROTECT *) protect
#define TCT_Get_Current_Protect() \
((TC_TCB *) TCD_Current_Thread) -> tc_current_protect
#define TCC_Task_Priority(task) ((TC_TCB *) (task)) -> tc_priority
#endif