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/*
* COPYRIGHT (c) 1989-1999.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#ifndef __ITRON_TASK_h_
#define __ITRON_TASK_h_
#ifdef __cplusplus
extern "C" {
#endif
/*
* Create Task (cre_tsk) Structure
*/
typedef struct t_ctsk {
VP exinf; /* extended information */
ATR tskatr; /* task attributes */
FP task; /* task start address */
PRI itskpri; /* initial task priority */
INT stksz; /* stack size */
/* additional information may be included depending on the implementation */
} T_CTSK;
/*
* Values for the tskatr field
*/
#define TA_ASM 0x00 /* program written in assembly language */
#define TA_HLNG 0x01 /* program written in high-level language */
#define TA_COP0 0x8000 /* uses coprocessor having ID = 0 */
#define TA_COP1 0x4000 /* uses coprocessor having ID = 1 */
#define TA_COP2 0x2000 /* uses coprocessor having ID = 2 */
#define TA_COP3 0x1000 /* uses coprocessor having ID = 3 */
#define TA_COP4 0x0800 /* uses coprocessor having ID = 4 */
#define TA_COP5 0x0400 /* uses coprocessor having ID = 5 */
#define TA_COP6 0x0200 /* uses coprocessor having ID = 6 */
#define TA_COP7 0x0100 /* uses coprocessor having ID = 7 */
/*
* Values for the tskid field
*/
#define TSK_SELF 0 /* task specifies itself */
/* XXX is this a mistake in ITRON? FALSE was here and in the types list */
#if 0
#define FALSE 0 /* indicates a task-independent portion (return */
/* parameters only) */
#endif
/*
* Values for the tskpri field
*/
#define TPRI_INI 0 /* specifies the initial priority on */
/* task startup (chg_pri) */
#define TPRI_RUN 0 /* specifies the highest priority during */
/* execution (rot_rdq) */
/*
* Reference Task (ref_tsk) Structure
*/
typedef struct t_rtsk {
VP exinf; /* extended information */
PRI tskpri; /* current priority */
UINT tskstat; /* task state */
/*
* The following are represent extended features of support
* [level X] (implementation-dependent).
*/
UINT tskwait; /* cause of wait */
ID wid; /* ID of object being waited for */
INT wupcnt; /* wakeup request count */
INT suscnt; /* SUSPEND request count */
ATR tskatr; /* task attributes */
FP task; /* task start address */
PRI itskpri; /* initial task priority */
INT stksz; /* stack size */
} T_RTSK;
/*
* Values for the tskstat field
*/
#define TTS_RUN 0x01 /* RUN */
#define TTS_RDY 0x02 /* READY */
#define TTS_WAI 0x04 /* WAIT */
#define TTS_SUS 0x08 /* SUSPEND */
#define TTS_WAS 0x0C /* WAIT-SUSPEND */
#define TTS_DMT 0x10 /* DORMANT */
/*
* Values for the tskwait field
*/
#define TTW_SLP 0x0001 /* wait due to slp_tsk or tslp_tsk */
#define TTW_DLY 0x0002 /* wait due to dly_tsk */
#define TTW_NOD 0x0008 /* connection function response wait */
#define TTW_FLG 0x0010 /* wait due to wai_flg or twai_flg */
#define TTW_SEM 0x0020 /* wait due to wai_sem or twai_sem */
#define TTW_MBX 0x0040 /* wait due to rcv_msg or trcv_msg */
#define TTW_SMBF 0x0080 /* wait due to snd_mbf or tsnd_mbf */
#define TTW_MBF 0x0100 /* wait due to rcv_mbf or trcv_mbf */
#define TTW_CAL 0x0200 /* wait for rendezvous call */
#define TTW_ACP 0x0400 /* wait for rendezvous accept */
#define TTW_RDV 0x0800 /* wait for rendezvous completion */
#define TTW_MPL 0x1000 /* wait due to get_blk or tget_blk */
#define TTW_MPF 0x2000 /* wait due to get_blf or tget_blf */
/*
* Since the task states given by tskstat and tskwait are expressed
* by bit correspondences, they are convenient when looking for OR
* conditions (such as whether a task is in WAIT or READY state).
*/
/*
* Task Management Functions
*/
/*
* cre_tsk - Create Task
*/
ER cre_tsk(
ID tskid,
T_CTSK *pk_ctsk
);
/*
* del_tsk - Delete Task
*/
ER del_tsk(
ID tskid
);
/*
* sta_tsk - Start Task
*/
ER sta_tsk(
ID tskid,
INT stacd
);
/*
* ext_tsk - Exit Issuing Task
*/
void ext_tsk( void );
/*
* exd_tsk - Exit and Delete Task
*/
void exd_tsk( void );
/*
* ter_tsk - Terminate Other Task
*/
ER ter_tsk(
ID tskid
);
/*
* dis_dsp - Disable Dispatch
*/
ER dis_dsp( void );
/*
* ena_dsp - Enable Dispatch
*/
ER ena_dsp( void );
/*
* chg_pri - Change Task Priority
*/
ER chg_pri(
ID tskid,
PRI tskpri
);
/*
* rot_rdq - Rotate Tasks on the Ready Queue
*/
ER rot_rdq(
PRI tskpri
);
/*
* rel_wai - Release Wait of Other Task
*/
ER rel_wai(
ID tskid
);
/*
* get_tid - Get Task Identifier
*/
ER get_tid(
ID *p_tskid
);
/*
* ref_tsk - Reference Task Status
*/
ER ref_tsk(
T_RTSK *pk_rtsk,
ID tskid
);
/*
* Task-Dependent Synchronization Functions
*/
/*
* sus_tsk - Suspend Other Task
*/
ER sus_tsk(
ID tskid
);
/*
* rsm_tsk - Resume Suspended Task
*/
ER rsm_tsk(
ID tskid
);
/*
* frsm_tsk - Forcibly Resume Suspended Task
*/
ER frsm_tsk(
ID tskid
);
/*
* slp_tsk - Sleep Task Sleep Task with Timeout
*/
ER slp_tsk( void );
/*
* tslp_tsk - Sleep Task with Timeout
*/
ER tslp_tsk(
TMO tmout
);
/*
* wup_tsk - Wakeup Other Task
*/
ER wup_tsk(
ID tskid
);
/*
* can_wup - Cancel Wakeup Request
*/
ER can_wup(
INT *p_wupcnt,
ID tskid
);
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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