55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
enum {
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Maxsteps = 200 * 100 * 2, /* 100 periods of 200 procs */
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/* Edf.flags field */
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Admitted = 0x01,
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Sporadic = 0x02,
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Yieldonblock = 0x04,
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Sendnotes = 0x08,
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Deadline = 0x10,
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Yield = 0x20,
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Extratime = 0x40,
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Infinity = ~0ULL,
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};
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typedef struct Edf Edf;
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struct Edf {
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/* All times in µs */
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/* time intervals */
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long D; /* Deadline */
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long Delta; /* Inherited deadline */
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long T; /* period */
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long C; /* Cost */
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long S; /* Slice: time remaining in this period */
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/* times (only low-order bits of absolute time) */
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long r; /* (this) release time */
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long d; /* (this) deadline */
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long t; /* Start of next period, t += T at release */
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long s; /* Time at which this proc was last scheduled */
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/* for schedulability testing */
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long testDelta;
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int testtype; /* Release or Deadline */
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long testtime;
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Proc *testnext;
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/* other */
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ushort flags;
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Timer;
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/* Stats */
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long edfused;
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long extraused;
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long aged;
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ulong periods;
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ulong missed;
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};
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extern Lock edftestlock; /* for atomic admitting/expelling */
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#pragma varargck type "t" long
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#pragma varargck type "U" uvlong
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/* Interface: */
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Edf* edflock(Proc*);
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void edfunlock(void);
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