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29 * @(#)resourcevar.h 8.4 (Berkeley) 1/9/95
33 #ifndef _SYS_RESOURCEVAR_H_
34 #define _SYS_RESOURCEVAR_H_
36 #include <sys/resource.h>
37 #include <sys/queue.h>
39 #include <sys/_lock.h>
40 #include <sys/_mutex.h>
44 * Kernel per-process accounting / statistics
45 * (not necessarily resident except when running).
48 * b - created at fork, never changes
49 * c - locked by proc mtx
50 * j - locked by sched_lock mtx
51 * k - only accessed by curthread
54 #define pstat_startzero p_ru
55 struct rusage p_ru; /* Stats for this process. */
56 struct rusage p_cru; /* Stats for reaped children. */
57 struct itimerval p_timer[3]; /* (j) Virtual-time timers. */
58 #define pstat_endzero pstat_startcopy
60 #define pstat_startcopy p_prof
61 struct uprof { /* Profile arguments. */
62 caddr_t pr_base; /* (c + j) Buffer base. */
63 u_long pr_size; /* (c + j) Buffer size. */
64 u_long pr_off; /* (c + j) PC offset. */
65 u_long pr_scale; /* (c + j) PC scaling. */
67 #define pstat_endcopy p_start
68 struct timeval p_start; /* (b) Starting time. */
74 * Kernel shareable process resource limits. Because this structure
75 * is moderately large but changes infrequently, it is normally
76 * shared copy-on-write after forks.
79 struct rlimit pl_rlimit[RLIM_NLIMITS];
80 int pl_refcnt; /* number of references */
84 * Per uid resource consumption
87 * (a) Constant from inception
88 * (b) Locked by ui_mtxp
89 * (c) Locked by global uihashtbl_mtx
92 LIST_ENTRY(uidinfo) ui_hash; /* (c) hash chain of uidinfos */
93 rlim_t ui_sbsize; /* (b) socket buffer space consumed */
94 long ui_proccnt; /* (b) number of processes */
95 uid_t ui_uid; /* (a) uid */
96 u_int ui_ref; /* (b) reference count */
97 struct mtx *ui_mtxp; /* protect all counts/limits */
100 #define UIDINFO_LOCK(ui) mtx_lock((ui)->ui_mtxp)
101 #define UIDINFO_UNLOCK(ui) mtx_unlock((ui)->ui_mtxp)
107 void addupc_intr(struct thread *td, uintfptr_t pc, u_int ticks);
108 void addupc_task(struct thread *td, uintfptr_t pc, u_int ticks);
109 void calccru(struct proc *p, struct timeval *up, struct timeval *sp);
110 void calcru(struct proc *p, struct timeval *up, struct timeval *sp);
111 int chgproccnt(struct uidinfo *uip, int diff, int maxval);
112 int chgsbsize(struct uidinfo *uip, u_int *hiwat, u_int to,
114 int fuswintr(void *base);
117 void lim_copy(struct plimit *dst, struct plimit *src);
118 rlim_t lim_cur(struct proc *p, int which);
119 void lim_free(struct plimit *limp);
121 *lim_hold(struct plimit *limp);
122 rlim_t lim_max(struct proc *p, int which);
123 void lim_rlimit(struct proc *p, int which, struct rlimit *rlp);
124 void ruadd(struct rusage *ru, struct rusage_ext *rux, struct rusage *ru2,
125 struct rusage_ext *rux2);
126 int suswintr(void *base, int word);
129 void uifree(struct uidinfo *uip);
130 void uihashinit(void);
131 void uihold(struct uidinfo *uip);
134 #endif /* !_SYS_RESOURCEVAR_H_ */