Subversion Repositories planix.SVN

enum {
        Maxsteps = 200 * 100 * 2,       /* 100 periods of 200 procs */

        /* Edf.flags field */
        Admitted                = 0x01,
        Sporadic                = 0x02,
        Yieldonblock            = 0x04,
        Sendnotes               = 0x08,
        Deadline                = 0x10,
        Yield                   = 0x20,
        Extratime               = 0x40,

        Infinity = ~0ULL,
};

typedef struct Edf              Edf;

struct Edf {
        /* All times in µs */
        /* time intervals */
        long            D;              /* Deadline */
        long            Delta;          /* Inherited deadline */
        long            T;              /* period */
        long            C;              /* Cost */
        long            S;              /* Slice: time remaining in this period */
        /* times (only low-order bits of absolute time) */
        long            r;              /* (this) release time */
        long            d;              /* (this) deadline */
        long            t;              /* Start of next period, t += T at release */
        long            s;              /* Time at which this proc was last scheduled */
        /* for schedulability testing */
        long            testDelta;
        int             testtype;       /* Release or Deadline */
        long            testtime;
        Proc            *testnext;
        /* other */
        ushort          flags;
        Timer;
        /* Stats */
        long            edfused;
        long            extraused;
        long            aged;
        ulong           periods;
        ulong           missed;
};

extern Lock     edftestlock;    /* for atomic admitting/expelling */

#pragma varargck        type    "t"             long
#pragma varargck        type    "U"             uvlong

/* Interface: */
Edf*            edflock(Proc*);
void            edfunlock(void);