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Annotation of coherent/c/usr/include/sys/proc.h, revision 1.1

1.1     ! root        1: /* (-lgl
        !             2:  *     COHERENT Version 3.0
        !             3:  *     Copyright (c) 1982, 1990 by Mark Williams Company.
        !             4:  *     All rights reserved. May not be copied without permission.
        !             5:  -lgl) */
        !             6: /*
        !             7:  * Process information.
        !             8:  */
        !             9: #ifndef  PROC_H
        !            10: #define        PROC_H  PROC_H
        !            11: 
        !            12: #include <sys/types.h>
        !            13: #include <sys/timeout.h>
        !            14: #include <sys/poll.h>
        !            15: 
        !            16: /*
        !            17:  * Number of user segments.
        !            18:  */
        !            19: #define NUSEG  6
        !            20: 
        !            21: /*
        !            22:  * In core information about a process.
        !            23:  * The `p_lforw' and `p_lback' entries must not move as they must be
        !            24:  * in the same place as in the `plink' structure.
        !            25:  */
        !            26: typedef struct proc {
        !            27:        struct   proc *p_lforw;         /* Working forward pointer */
        !            28:        struct   proc *p_lback;         /* Working backward pointer */
        !            29:        struct   proc *p_nforw;         /* Next forward pointer */
        !            30:        struct   proc *p_nback;         /* Next backward pointer */
        !            31:        struct   seg  *p_segp[NUSEG+1]; /* Segments */
        !            32:        unsigned p_pid;                 /* Process id */
        !            33:        unsigned p_ppid;                /* Process id of parent */
        !            34:        unsigned p_uid;                 /* Effective uid */
        !            35:        unsigned p_ruid;                /* Real uid */
        !            36:        unsigned p_rgid;                /* Real gid */
        !            37:        unsigned p_state;               /* Scheduling state */
        !            38:        unsigned p_flags;               /* Flags */
        !            39:        sig_t    p_ssig;                /* Signals which have been set */
        !            40:        sig_t    p_isig;                /* Signals which are being ignored */
        !            41:        char     *p_event;              /* Wakeup event channel */
        !            42:        unsigned p_alarm;               /* Timer for alarms */
        !            43:        unsigned p_group;               /* Process group */
        !            44:        dev_t    p_ttdev;               /* Controlling terminal */
        !            45:        unsigned p_nice;                /* Nice value */
        !            46:        unsigned p_cval;                /* Cpu schedule value */
        !            47:        unsigned p_sval;                /* Swap schedule value */
        !            48:        int      p_ival;                /* Importance value */
        !            49:        unsigned p_rval;                /* Response value */
        !            50:        unsigned p_lctim;               /* Last time cval was updated */
        !            51:        long     p_utime;               /* User time (HZ) */
        !            52:        long     p_stime;               /* System time */
        !            53:        long     p_cutime;              /* Sum of childs user time */
        !            54:        long     p_cstime;              /* Sum of childs system time */
        !            55:        int      p_exit;                /* Exit status */
        !            56:        event_t *p_polls;               /* Enabled polls */
        !            57:        TIM      p_polltim;             /* Poll  timer */
        !            58:        TIM      p_alrmtim;             /* Alarm timer */
        !            59: } PROC;
        !            60: 
        !            61: /*
        !            62:  * Segment indices.
        !            63:  */
        !            64: #define SIUSERP        0                       /* User area segment */
        !            65: #define SISTACK        1                       /* Stack segment */
        !            66: #define        SISTEXT 2                       /* Shared text segment */
        !            67: #define SIPTEXT        3                       /* Private text segment */
        !            68: #define SISDATA        4                       /* Shared data segment */
        !            69: #define SIPDATA        5                       /* Private data segment */
        !            70: #define SIAUXIL        6                       /* Auxiliary segment */
        !            71: 
        !            72: /*
        !            73:  * Status of process (p_state).
        !            74:  */
        !            75: #define PSSLEEP        1                       /* Sleeping */
        !            76: #define PSRUN  2                       /* Running */
        !            77: #define PSDEAD 3                       /* Process is exiting */
        !            78: 
        !            79: /*
        !            80:  * Flags (p_flags).
        !            81:  */
        !            82: #define PFCORE 00001                   /* Process is in core */
        !            83: #define PFLOCK 00002                   /* Process is locked in core */
        !            84: #define PFSWIO 00004                   /* Swap I/O in progress */
        !            85: #define PFSWAP 00010                   /* Process is swapped out */
        !            86: #define PFWAIT 00020                   /* Process is stopped (not waited) */
        !            87: #define PFSTOP 00040                   /* Process is stopped (waited on) */
        !            88: #define PFTRAC 00100                   /* Process is being traced */
        !            89: #define PFKERN 00200                   /* Kernel process */
        !            90: #define PFAUXM 00400                   /* Auxiliary segments in memory */
        !            91: #define PFDISP 01000                   /* Dispatch at earliest convenience */
        !            92: #define PFNDMP 02000                   /* Command mode forbids dump */
        !            93: #ifdef QWAKEUP
        !            94: #define PFWAKE 04000                   /* Wakeup requested */
        !            95: #endif
        !            96: 
        !            97: /*
        !            98:  * Values of nice.
        !            99:  */
        !           100: #define MINNICE        0                       /* Minimum value of nice */
        !           101: #define DEFNICE        20                      /* Default nice value */
        !           102: #define MAXNICE        40                      /* Maximum nice value */
        !           103: 
        !           104: #ifdef KERNEL
        !           105: /*
        !           106:  * For easy referencing.
        !           107:  */
        !           108: #define p_u    p_segp[SIUSERP]
        !           109: #define SELF   cprocp
        !           110: 
        !           111: #endif
        !           112: 
        !           113: #ifdef KERNEL
        !           114: /*
        !           115:  * Determine if a gate is locked.
        !           116:  */
        !           117: #define locked(g)      ((g)[0])
        !           118: 
        !           119: #endif
        !           120: 
        !           121: #ifdef KERNEL
        !           122: /*
        !           123:  * Functions.
        !           124:  */
        !           125: extern int     idle();
        !           126: extern PROC    *process();
        !           127: extern int     wakeup();
        !           128: #ifdef QWAKEUP
        !           129: extern int     wakeup2();
        !           130: #endif
        !           131: 
        !           132: #endif
        !           133: 
        !           134: #ifdef KERNEL
        !           135: /*
        !           136:  * Global variables.
        !           137:  */
        !           138: extern int     quantum;                /* Current quantum */
        !           139: extern int     disflag;                /* Dispatch soon as possible */
        !           140: extern int     intflag;                /* We are in an interrupt */
        !           141: #ifndef NOMONITOR
        !           142: extern int     swmflag;                /* Monitor swapper */
        !           143: #endif
        !           144: extern int     cpid;                   /* Current process id */
        !           145: #ifdef QWAKEUP
        !           146: extern int     ntowake;                /* Wakeup pending */
        !           147: #endif
        !           148: extern GATE    pnxgate;                /* Gate for p_next */
        !           149: extern PROC    procq;                  /* Process queue */
        !           150: extern PROC    *iprocp;                /* Idle process struct */
        !           151: extern PROC    *eprocp;                /* Init process struct */
        !           152: extern PROC    *cprocp;                /* Current process */
        !           153: 
        !           154: #endif
        !           155: 
        !           156: /*
        !           157:  * Number of entries in sleep/wakeup queue.
        !           158:  */
        !           159: #define        NHPLINK 32
        !           160: 
        !           161: /*
        !           162:  * Sleep/wakeup queues.
        !           163:  */
        !           164: typedef struct plink {
        !           165:        struct   proc *p_lforw;         /* Working forward pointer */
        !           166:        struct   proc *p_lback;         /* Working backward pointer */
        !           167: } PLINK;
        !           168: 
        !           169: #ifdef KERNEL
        !           170: /*
        !           171:  * Function to hash a wakeup channel.
        !           172:  * Most channels are even.
        !           173:  */
        !           174: #define hash(e)        ((((unsigned)(e))>>1)%NHPLINK)
        !           175: 
        !           176: #endif
        !           177: 
        !           178: #ifdef KERNEL
        !           179: /*
        !           180:  * Global variables.
        !           181:  */
        !           182: extern PLINK   linkq[NHPLINK];         /* Sleep/wakeup hash queue */
        !           183: 
        !           184: #endif
        !           185: 
        !           186: #endif

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