#ifndef EXEC_TASKS_H
#define EXEC_TASKS_H
/*********************************************************************
*
*   Commodore Amiga -- ROM Operating System Executive Include File
*
**********************************************************************
*
*   Source Control:
*
*       $Header: tasks.h,v 33.2 86/04/29 18:34:00 neil Exp $
*
*       $Locker:  $
*
*********************************************************************/

#ifndef EXEC_NODES_H
#include "exec/nodes.h"
#endif !EXEC_NODES_H

#ifndef EXEC_LISTS_H
#include "exec/lists.h"
#endif !EXEC_LISTS_H


extern struct Task {
    struct  Node tc_Node;
    UBYTE   tc_Flags;
    UBYTE   tc_State;
    BYTE    tc_IDNestCnt;           /* intr disabled nesting*/
    BYTE    tc_TDNestCnt;           /* task disabled nesting*/
    ULONG   tc_SigAlloc;            /* sigs allocated */
    ULONG   tc_SigWait;             /* sigs we are waiting for */
    ULONG   tc_SigRecvd;            /* sigs we have received */
    ULONG   tc_SigExcept;           /* sigs we will take excepts for */
    UWORD   tc_TrapAlloc;           /* traps allocated */
    UWORD   tc_TrapAble;            /* traps enabled */
    APTR    tc_ExceptData;          /* points to except data */
    APTR    tc_ExceptCode;          /* points to except code */
    APTR    tc_TrapData;            /* points to trap code */
    APTR    tc_TrapCode;            /* points to trap data */
    APTR    tc_SPReg;               /* stack pointer        */
    APTR    tc_SPLower;             /* stack lower bound    */
    APTR    tc_SPUpper;             /* stack upper bound + 2*/
    VOID    (*tc_Switch)();         /* task losing CPU    */
    VOID    (*tc_Launch)();         /* task getting CPU  */
    struct  List tc_MemEntry;       /* allocated memory */
    APTR    tc_UserData;            /* per task data */
};

/*----- Flag Bits ------------------------------------------*/
#define TB_PROCTIME     0
#define TB_STACKCHK     4
#define TB_EXCEPT       5
#define TB_SWITCH       6
#define TB_LAUNCH       7

#define TF_PROCTIME     (1<<0)
#define TF_STACKCHK     (1<<4)
#define TF_EXCEPT       (1<<5)
#define TF_SWITCH       (1<<6)
#define TF_LAUNCH       (1<<7)

/*----- Task States ----------------------------------------*/
#define TS_INVALID      0
#define TS_ADDED        1
#define TS_RUN          2
#define TS_READY        3
#define TS_WAIT         4
#define TS_EXCEPT       5
#define TS_REMOVED      6

/*----- Predefined Signals -------------------------------------*/

#define SIGB_ABORT      0
#define SIGB_CHILD      1
#define SIGB_BLIT       4
#define SIGB_SINGLE     4
#define SIGB_DOS        8

#define SIGF_ABORT      (1<<0)
#define SIGF_CHILD      (1<<1)
#define SIGF_BLIT       (1<<4)
#define SIGF_SINGLE     (1<<4)
#define SIGF_DOS        (1<<8)

#endif