minix/servers/sched/schedproc.h

   1 /* This table has one slot per process.  It contains scheduling information
   2  * for each process.
   3  */
   4 #include <limits.h>
   5
   6 #include <minix/bitmap.h>
   7
   8 /* EXTERN should be extern except in main.c, where we want to keep the struct */
   9 #ifdef _MAIN
  10 #undef EXTERN
  11 #define EXTERN
  12 #endif
  13
  14 #ifndef CONFIG_SMP
  15 #define CONFIG_MAX_CPUS 1
  16 #endif
  17
  18 /**
  19  * We might later want to add more information to this table, such as the
  20  * process owner, process group or cpumask.
  21  */
  22
  23 EXTERN struct schedproc {
  24         endpoint_t endpoint;    /* process endpoint id */
  25         endpoint_t parent;      /* parent endpoint id */
  26         unsigned flags;         /* flag bits */
  27
  28         /* User space scheduling */
  29         unsigned max_priority;  /* this process' highest allowed priority */
  30         unsigned priority;              /* the process' current priority */
  31         unsigned time_slice;            /* this process's time slice */
  32         unsigned cpu;           /* what CPU is the process running on */
  33         bitchunk_t cpu_mask[BITMAP_CHUNKS(CONFIG_MAX_CPUS)]; /* what CPUs is the
  34                                                                 process allowed
  35                                                                 to run on */
  36 } schedproc[NR_PROCS];
  37
  38 /* Flag values */
  39 #define IN_USE          0x00001 /* set when 'schedproc' slot in use */