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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 * k - only accessed by curthread
51 * w - locked by proc itim lock
52 * w2 - locked by proc prof lock
55 #define pstat_startzero p_cru
56 struct rusage p_cru; /* Stats for reaped children. */
57 struct itimerval p_timer[3]; /* (w) 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 + w2) Buffer base. */
63 u_long pr_size; /* (c + w2) Buffer size. */
64 u_long pr_off; /* (c + w2) PC offset. */
65 u_long pr_scale; /* (c + w2) 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 */
86 * Per uid resource consumption. This structure is used to track
87 * the total resource consumption (process count, socket buffer size,
88 * etc) for the uid and impose limits.
91 * (a) Constant from inception
92 * (b) Lockless, updated using atomics
93 * (c) Locked by global uihashtbl_lock
94 * (d) Locked by the ui_vmsize_mtx
97 LIST_ENTRY(uidinfo) ui_hash; /* (c) hash chain of uidinfos */
98 struct mtx ui_vmsize_mtx;
99 vm_ooffset_t ui_vmsize; /* (d) swap reservation by uid */
100 long ui_sbsize; /* (b) socket buffer space consumed */
101 long ui_proccnt; /* (b) number of processes */
102 long ui_ptscnt; /* (b) number of pseudo-terminals */
103 long ui_kqcnt; /* (b) number of kqueues */
104 long ui_umtxcnt; /* (b) number of shared umtxs */
105 uid_t ui_uid; /* (a) uid */
106 u_int ui_ref; /* (b) reference count */
108 struct racct *ui_racct; /* (a) resource accounting */
112 #define UIDINFO_VMSIZE_LOCK(ui) mtx_lock(&((ui)->ui_vmsize_mtx))
113 #define UIDINFO_VMSIZE_UNLOCK(ui) mtx_unlock(&((ui)->ui_vmsize_mtx))
119 void addupc_intr(struct thread *td, uintfptr_t pc, u_int ticks);
120 void addupc_task(struct thread *td, uintfptr_t pc, u_int ticks);
121 void calccru(struct proc *p, struct timeval *up, struct timeval *sp);
122 void calcru(struct proc *p, struct timeval *up, struct timeval *sp);
123 int chgkqcnt(struct uidinfo *uip, int diff, rlim_t max);
124 int chgproccnt(struct uidinfo *uip, int diff, rlim_t maxval);
125 int chgsbsize(struct uidinfo *uip, u_int *hiwat, u_int to,
127 int chgptscnt(struct uidinfo *uip, int diff, rlim_t maxval);
128 int chgumtxcnt(struct uidinfo *uip, int diff, rlim_t maxval);
129 int fuswintr(void *base);
130 int kern_proc_setrlimit(struct thread *td, struct proc *p, u_int which,
131 struct rlimit *limp);
134 void lim_copy(struct plimit *dst, struct plimit *src);
135 rlim_t lim_cur(struct thread *td, int which);
136 rlim_t lim_cur_proc(struct proc *p, int which);
137 void lim_fork(struct proc *p1, struct proc *p2);
138 void lim_free(struct plimit *limp);
140 *lim_hold(struct plimit *limp);
141 rlim_t lim_max(struct thread *td, int which);
142 rlim_t lim_max_proc(struct proc *p, int which);
143 void lim_rlimit(struct thread *td, int which, struct rlimit *rlp);
144 void lim_rlimit_proc(struct proc *p, int which, struct rlimit *rlp);
145 void ruadd(struct rusage *ru, struct rusage_ext *rux, struct rusage *ru2,
146 struct rusage_ext *rux2);
147 void rucollect(struct rusage *ru, struct rusage *ru2);
148 void rufetch(struct proc *p, struct rusage *ru);
149 void rufetchcalc(struct proc *p, struct rusage *ru, struct timeval *up,
151 void rufetchtd(struct thread *td, struct rusage *ru);
152 void ruxagg(struct proc *p, struct thread *td);
153 int suswintr(void *base, int word);
156 void uifree(struct uidinfo *uip);
157 void uihashinit(void);
158 void uihold(struct uidinfo *uip);
160 void ui_racct_foreach(void (*callback)(struct racct *racct,
161 void *arg2, void *arg3), void (*pre)(void), void (*post)(void),
162 void *arg2, void *arg3);
166 #endif /* !_SYS_RESOURCEVAR_H_ */