/* ** Structure for active shares. ** ** Used by the kernel and by programs such as "init" and "login". */ typedef short uid_t; struct lnode { uid_t l_uid; /* real uid for owner of this node */ u_short l_flags; /* (see below) */ u_short l_shares; /* allocated shares */ uid_t l_group; /* uid for this node's scheduling group */ float l_usage; /* decaying accumulated costs */ float l_charge; /* long term accumulated costs */ }; /* ** Values of limits "flags". */ #define ACTIVELNODE 001 /* this lnode is on active list */ #define LASTREF 002 /* set for L_DEADLIM if last reference to this lnode */ #define DEADGROUP 004 /* group account is dead */ #define CHNGDLIMITS 020 /* this lnode's limits have changed */ #define NOTSHARED 040 /* this lnode does not get a share of the m/c */ /* ** Kernel user share structure. */ typedef struct kern_lnode * KL_p; struct kern_lnode { KL_p kl_next; /* next in active list */ KL_p kl_prev; /* prev in active list */ KL_p kl_parent; /* group parent */ KL_p kl_gnext; /* next in parent's group */ KL_p kl_ghead; /* start of this group */ struct lnode kl; /* user parameters */ float kl_gshares; /* total shares for this group */ float kl_eshare; /* effective share for this group */ float kl_norms; /* share**2 for this lnode */ float kl_usage; /* kl.l_usage / kl_norms */ float kl_rate; /* active process rate for this lnode */ float kl_temp; /* temporary for scheduler */ float kl_spare; /* <spare> */ u_long kl_cost; /* cost accumulating in current period */ u_long kl_muse; /* memory pages used */ u_short kl_refcount; /* processes attached to this lnode */ u_short kl_children; /* lnodes attached to this lnode */ }; /* ** Limits system call defines. */ #define L_MYLIM 0 /* get own lnode structure */ #define L_OTHLIM 1 /* get other user's lnode structure */ #define L_ALLLIM 2 /* get all active lnode structures */ #define L_SETLIM 3 /* set lnode for new user */ #define L_DEADLIM 4 /* get zombie and lnode structure of child */ #define L_CHNGLIM 5 /* change active lnode parameters */ #define L_DEADGROUP 6 /* get lnode structure for dead group */ #define L_GETCOSTS 7 /* get share constants */ #define L_SETCOSTS 8 /* set share constants */ #define L_MYKN 9 /* get own kern_lnode structure */ #define L_OTHKN 10 /* get other user's kern_lnode structure */ #define L_ALLKN 11 /* get all active kern_lnode structures */ /* ** Kernel lnode table. */ #ifdef KERNEL extern KL_p lnodes; extern KL_p lnodesMAXUSERS; extern KL_p lastlnode; extern int maxusers; extern float zerof; extern float onef; extern float twof; #endif KERNEL #define _LNODE_ 1