edf.h

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    1 enum {
    2         Maxsteps = 200 * 100 * 2,       /* 100 periods of 200 procs */
    3 
    4         /* Edf.flags field */
    5         Admitted                = 0x01,
    6         Sporadic                = 0x02,
    7         Yieldonblock            = 0x04,
    8         Sendnotes               = 0x08,
    9         Deadline                = 0x10,
   10         Yield                   = 0x20,
   11         Extratime               = 0x40,
   12 
   13         Infinity = ~0ULL,
   14 };
   15 
   16 typedef struct Edf              Edf;
   17 
   18 struct Edf {
   19         /* All times in µs */
   20         /* time intervals */
   21         long            D;              /* Deadline */
   22         long            Delta;          /* Inherited deadline */
   23         long            T;              /* period */
   24         long            C;              /* Cost */
   25         long            S;              /* Slice: time remaining in this period */
   26         /* times (only low-order bits of absolute time) */
   27         long            r;              /* (this) release time */
   28         long            d;              /* (this) deadline */
   29         long            t;              /* Start of next period, t += T at release */
   30         long            s;              /* Time at which this proc was last scheduled */
   31         /* for schedulability testing */
   32         long            testDelta;
   33         int             testtype;       /* Release or Deadline */
   34         long            testtime;
   35         Proc            *testnext;
   36         /* other */
   37         ushort          flags;
   38         Timer;
   39         /* Stats */
   40         long            edfused;
   41         long            extraused;
   42         long            aged;
   43         ulong           periods;
   44         ulong           missed;
   45 };
   46 
   47 extern Lock     edftestlock;    /* for atomic admitting/expelling */
   48 
   49 #pragma varargck        type    "t"             long
   50 #pragma varargck        type    "U"             uvlong
   51 
   52 /* Interface: */
   53 Edf*            edflock(Proc*);
   54 void            edfunlock(void);

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FreeBSD/Linux Kernel Cross Reference sys/port/edf.h

FreeBSD/Linux Kernel Cross Reference
sys/port/edf.h