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31 * @(#)resourcevar.h 8.4 (Berkeley) 1/9/95
35 #ifndef _SYS_RESOURCEVAR_H_
36 #define _SYS_RESOURCEVAR_H_
38 #include <sys/resource.h>
39 #include <sys/queue.h>
41 #include <sys/_lock.h>
42 #include <sys/_mutex.h>
46 * Kernel per-process accounting / statistics
47 * (not necessarily resident except when running).
50 * b - created at fork, never changes
51 * c - locked by proc mtx
52 * k - only accessed by curthread
53 * w - locked by proc itim lock
54 * w2 - locked by proc prof lock
57 #define pstat_startzero p_cru
58 struct rusage p_cru; /* Stats for reaped children. */
59 struct itimerval p_timer[3]; /* (w) Virtual-time timers. */
60 #define pstat_endzero pstat_startcopy
62 #define pstat_startcopy p_prof
63 struct uprof { /* Profile arguments. */
64 caddr_t pr_base; /* (c + w2) Buffer base. */
65 u_long pr_size; /* (c + w2) Buffer size. */
66 u_long pr_off; /* (c + w2) PC offset. */
67 u_long pr_scale; /* (c + w2) PC scaling. */
69 #define pstat_endcopy p_start
70 struct timeval p_start; /* (b) Starting time. */
76 * Kernel shareable process resource limits. Because this structure
77 * is moderately large but changes infrequently, it is normally
78 * shared copy-on-write after forks.
81 struct rlimit pl_rlimit[RLIM_NLIMITS];
82 int pl_refcnt; /* number of references */
88 * Per uid resource consumption. This structure is used to track
89 * the total resource consumption (process count, socket buffer size,
90 * etc) for the uid and impose limits.
93 * (a) Constant from inception
94 * (b) Lockless, updated using atomics
95 * (c) Locked by global uihashtbl_lock
98 LIST_ENTRY(uidinfo) ui_hash; /* (c) hash chain of uidinfos */
99 u_long ui_vmsize; /* (b) pages of 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 kern_proc_setrlimit(struct thread *td, struct proc *p, u_int which,
130 struct rlimit *limp);
133 void lim_copy(struct plimit *dst, struct plimit *src);
134 rlim_t lim_cur(struct thread *td, int which);
135 rlim_t lim_cur_proc(struct proc *p, int which);
136 void lim_fork(struct proc *p1, struct proc *p2);
137 void lim_free(struct plimit *limp);
139 *lim_hold(struct plimit *limp);
140 rlim_t lim_max(struct thread *td, int which);
141 rlim_t lim_max_proc(struct proc *p, int which);
142 void lim_rlimit(struct thread *td, int which, struct rlimit *rlp);
143 void lim_rlimit_proc(struct proc *p, int which, struct rlimit *rlp);
144 void ruadd(struct rusage *ru, struct rusage_ext *rux, struct rusage *ru2,
145 struct rusage_ext *rux2);
146 void rucollect(struct rusage *ru, struct rusage *ru2);
147 void rufetch(struct proc *p, struct rusage *ru);
148 void rufetchcalc(struct proc *p, struct rusage *ru, struct timeval *up,
150 void rufetchtd(struct thread *td, struct rusage *ru);
151 void ruxagg(struct proc *p, struct thread *td);
154 void uifree(struct uidinfo *uip);
155 void uihashinit(void);
156 void uihold(struct uidinfo *uip);
158 void ui_racct_foreach(void (*callback)(struct racct *racct,
159 void *arg2, void *arg3), void (*pre)(void), void (*post)(void),
160 void *arg2, void *arg3);
164 #endif /* !_SYS_RESOURCEVAR_H_ */