8f80f103b4
After careful grepping, it seems none of these pools can be found in our source tree. They are not in use, nor are they defined.
276 lines
9.7 KiB
C
276 lines
9.7 KiB
C
/*-
|
|
* Copyright (c) 1999,2000,2001 Jonathan Lemon <jlemon@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _SYS_EVENT_H_
|
|
#define _SYS_EVENT_H_
|
|
|
|
#include <sys/queue.h>
|
|
|
|
#define EVFILT_READ (-1)
|
|
#define EVFILT_WRITE (-2)
|
|
#define EVFILT_AIO (-3) /* attached to aio requests */
|
|
#define EVFILT_VNODE (-4) /* attached to vnodes */
|
|
#define EVFILT_PROC (-5) /* attached to struct proc */
|
|
#define EVFILT_SIGNAL (-6) /* attached to struct proc */
|
|
#define EVFILT_TIMER (-7) /* timers */
|
|
/* EVFILT_NETDEV (-8) no longer supported */
|
|
#define EVFILT_FS (-9) /* filesystem events */
|
|
#define EVFILT_LIO (-10) /* attached to lio requests */
|
|
#define EVFILT_USER (-11) /* User events */
|
|
#define EVFILT_SYSCOUNT 11
|
|
|
|
#define EV_SET(kevp_, a, b, c, d, e, f) do { \
|
|
struct kevent *kevp = (kevp_); \
|
|
(kevp)->ident = (a); \
|
|
(kevp)->filter = (b); \
|
|
(kevp)->flags = (c); \
|
|
(kevp)->fflags = (d); \
|
|
(kevp)->data = (e); \
|
|
(kevp)->udata = (f); \
|
|
} while(0)
|
|
|
|
struct kevent {
|
|
uintptr_t ident; /* identifier for this event */
|
|
short filter; /* filter for event */
|
|
u_short flags;
|
|
u_int fflags;
|
|
intptr_t data;
|
|
void *udata; /* opaque user data identifier */
|
|
};
|
|
|
|
/* actions */
|
|
#define EV_ADD 0x0001 /* add event to kq (implies enable) */
|
|
#define EV_DELETE 0x0002 /* delete event from kq */
|
|
#define EV_ENABLE 0x0004 /* enable event */
|
|
#define EV_DISABLE 0x0008 /* disable event (not reported) */
|
|
|
|
/* flags */
|
|
#define EV_ONESHOT 0x0010 /* only report one occurrence */
|
|
#define EV_CLEAR 0x0020 /* clear event state after reporting */
|
|
#define EV_RECEIPT 0x0040 /* force EV_ERROR on success, data=0 */
|
|
#define EV_DISPATCH 0x0080 /* disable event after reporting */
|
|
|
|
#define EV_SYSFLAGS 0xF000 /* reserved by system */
|
|
#define EV_FLAG1 0x2000 /* filter-specific flag */
|
|
|
|
/* returned values */
|
|
#define EV_EOF 0x8000 /* EOF detected */
|
|
#define EV_ERROR 0x4000 /* error, data contains errno */
|
|
|
|
/*
|
|
* data/hint flags/masks for EVFILT_USER, shared with userspace
|
|
*
|
|
* On input, the top two bits of fflags specifies how the lower twenty four
|
|
* bits should be applied to the stored value of fflags.
|
|
*
|
|
* On output, the top two bits will always be set to NOTE_FFNOP and the
|
|
* remaining twenty four bits will contain the stored fflags value.
|
|
*/
|
|
#define NOTE_FFNOP 0x00000000 /* ignore input fflags */
|
|
#define NOTE_FFAND 0x40000000 /* AND fflags */
|
|
#define NOTE_FFOR 0x80000000 /* OR fflags */
|
|
#define NOTE_FFCOPY 0xc0000000 /* copy fflags */
|
|
#define NOTE_FFCTRLMASK 0xc0000000 /* masks for operations */
|
|
#define NOTE_FFLAGSMASK 0x00ffffff
|
|
|
|
#define NOTE_TRIGGER 0x01000000 /* Cause the event to be
|
|
triggered for output. */
|
|
|
|
/*
|
|
* data/hint flags for EVFILT_{READ|WRITE}, shared with userspace
|
|
*/
|
|
#define NOTE_LOWAT 0x0001 /* low water mark */
|
|
|
|
/*
|
|
* data/hint flags for EVFILT_VNODE, shared with userspace
|
|
*/
|
|
#define NOTE_DELETE 0x0001 /* vnode was removed */
|
|
#define NOTE_WRITE 0x0002 /* data contents changed */
|
|
#define NOTE_EXTEND 0x0004 /* size increased */
|
|
#define NOTE_ATTRIB 0x0008 /* attributes changed */
|
|
#define NOTE_LINK 0x0010 /* link count changed */
|
|
#define NOTE_RENAME 0x0020 /* vnode was renamed */
|
|
#define NOTE_REVOKE 0x0040 /* vnode access was revoked */
|
|
|
|
/*
|
|
* data/hint flags for EVFILT_PROC, shared with userspace
|
|
*/
|
|
#define NOTE_EXIT 0x80000000 /* process exited */
|
|
#define NOTE_FORK 0x40000000 /* process forked */
|
|
#define NOTE_EXEC 0x20000000 /* process exec'd */
|
|
#define NOTE_PCTRLMASK 0xf0000000 /* mask for hint bits */
|
|
#define NOTE_PDATAMASK 0x000fffff /* mask for pid */
|
|
|
|
/* additional flags for EVFILT_PROC */
|
|
#define NOTE_TRACK 0x00000001 /* follow across forks */
|
|
#define NOTE_TRACKERR 0x00000002 /* could not track child */
|
|
#define NOTE_CHILD 0x00000004 /* am a child process */
|
|
|
|
struct knote;
|
|
SLIST_HEAD(klist, knote);
|
|
struct kqueue;
|
|
SLIST_HEAD(kqlist, kqueue);
|
|
struct knlist {
|
|
struct klist kl_list;
|
|
void (*kl_lock)(void *); /* lock function */
|
|
void (*kl_unlock)(void *);
|
|
void (*kl_assert_locked)(void *);
|
|
void (*kl_assert_unlocked)(void *);
|
|
void *kl_lockarg; /* argument passed to kl_lockf() */
|
|
};
|
|
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/*
|
|
* Flags for knote call
|
|
*/
|
|
#define KNF_LISTLOCKED 0x0001 /* knlist is locked */
|
|
#define KNF_NOKQLOCK 0x0002 /* do not keep KQ_LOCK */
|
|
|
|
#define KNOTE(list, hist, flags) knote(list, hist, flags)
|
|
#define KNOTE_LOCKED(list, hint) knote(list, hint, KNF_LISTLOCKED)
|
|
#define KNOTE_UNLOCKED(list, hint) knote(list, hint, 0)
|
|
|
|
#define KNLIST_EMPTY(list) SLIST_EMPTY(&(list)->kl_list)
|
|
|
|
/*
|
|
* Flag indicating hint is a signal. Used by EVFILT_SIGNAL, and also
|
|
* shared by EVFILT_PROC (all knotes attached to p->p_klist)
|
|
*/
|
|
#define NOTE_SIGNAL 0x08000000
|
|
|
|
/*
|
|
* Hint values for the optional f_touch event filter. If f_touch is not set
|
|
* to NULL and f_isfd is zero the f_touch filter will be called with the type
|
|
* argument set to EVENT_REGISTER during a kevent() system call. It is also
|
|
* called under the same conditions with the type argument set to EVENT_PROCESS
|
|
* when the event has been triggered.
|
|
*/
|
|
#define EVENT_REGISTER 1
|
|
#define EVENT_PROCESS 2
|
|
|
|
struct filterops {
|
|
int f_isfd; /* true if ident == filedescriptor */
|
|
int (*f_attach)(struct knote *kn);
|
|
void (*f_detach)(struct knote *kn);
|
|
int (*f_event)(struct knote *kn, long hint);
|
|
void (*f_touch)(struct knote *kn, struct kevent *kev, u_long type);
|
|
};
|
|
|
|
/*
|
|
* Setting the KN_INFLUX flag enables you to unlock the kq that this knote
|
|
* is on, and modify kn_status as if you had the KQ lock.
|
|
*
|
|
* kn_sfflags, kn_sdata, and kn_kevent are protected by the knlist lock.
|
|
*/
|
|
struct knote {
|
|
SLIST_ENTRY(knote) kn_link; /* for kq */
|
|
SLIST_ENTRY(knote) kn_selnext; /* for struct selinfo */
|
|
struct knlist *kn_knlist; /* f_attach populated */
|
|
TAILQ_ENTRY(knote) kn_tqe;
|
|
struct kqueue *kn_kq; /* which queue we are on */
|
|
struct kevent kn_kevent;
|
|
int kn_status; /* protected by kq lock */
|
|
#define KN_ACTIVE 0x01 /* event has been triggered */
|
|
#define KN_QUEUED 0x02 /* event is on queue */
|
|
#define KN_DISABLED 0x04 /* event is disabled */
|
|
#define KN_DETACHED 0x08 /* knote is detached */
|
|
#define KN_INFLUX 0x10 /* knote is in flux */
|
|
#define KN_MARKER 0x20 /* ignore this knote */
|
|
#define KN_KQUEUE 0x40 /* this knote belongs to a kq */
|
|
#define KN_HASKQLOCK 0x80 /* for _inevent */
|
|
int kn_sfflags; /* saved filter flags */
|
|
intptr_t kn_sdata; /* saved data field */
|
|
union {
|
|
struct file *p_fp; /* file data pointer */
|
|
struct proc *p_proc; /* proc pointer */
|
|
struct aiocblist *p_aio; /* AIO job pointer */
|
|
struct aioliojob *p_lio; /* LIO job pointer */
|
|
} kn_ptr;
|
|
struct filterops *kn_fop;
|
|
void *kn_hook;
|
|
int kn_hookid;
|
|
|
|
#define kn_id kn_kevent.ident
|
|
#define kn_filter kn_kevent.filter
|
|
#define kn_flags kn_kevent.flags
|
|
#define kn_fflags kn_kevent.fflags
|
|
#define kn_data kn_kevent.data
|
|
#define kn_fp kn_ptr.p_fp
|
|
};
|
|
struct kevent_copyops {
|
|
void *arg;
|
|
int (*k_copyout)(void *arg, struct kevent *kevp, int count);
|
|
int (*k_copyin)(void *arg, struct kevent *kevp, int count);
|
|
};
|
|
|
|
struct thread;
|
|
struct proc;
|
|
struct knlist;
|
|
struct mtx;
|
|
|
|
extern void knote(struct knlist *list, long hint, int lockflags);
|
|
extern void knote_fork(struct knlist *list, int pid);
|
|
extern void knlist_add(struct knlist *knl, struct knote *kn, int islocked);
|
|
extern void knlist_remove(struct knlist *knl, struct knote *kn, int islocked);
|
|
extern void knlist_remove_inevent(struct knlist *knl, struct knote *kn);
|
|
extern int knlist_empty(struct knlist *knl);
|
|
extern void knlist_init(struct knlist *knl, void *lock,
|
|
void (*kl_lock)(void *), void (*kl_unlock)(void *),
|
|
void (*kl_assert_locked)(void *), void (*kl_assert_unlocked)(void *));
|
|
extern void knlist_init_mtx(struct knlist *knl, struct mtx *lock);
|
|
extern void knlist_destroy(struct knlist *knl);
|
|
extern void knlist_cleardel(struct knlist *knl, struct thread *td,
|
|
int islocked, int killkn);
|
|
#define knlist_clear(knl, islocked) \
|
|
knlist_cleardel((knl), NULL, (islocked), 0)
|
|
#define knlist_delete(knl, td, islocked) \
|
|
knlist_cleardel((knl), (td), (islocked), 1)
|
|
extern void knote_fdclose(struct thread *p, int fd);
|
|
extern int kqfd_register(int fd, struct kevent *kev, struct thread *p,
|
|
int waitok);
|
|
extern int kqueue_add_filteropts(int filt, struct filterops *filtops);
|
|
extern int kqueue_del_filteropts(int filt);
|
|
|
|
#else /* !_KERNEL */
|
|
|
|
#include <sys/cdefs.h>
|
|
struct timespec;
|
|
|
|
__BEGIN_DECLS
|
|
int kqueue(void);
|
|
int kevent(int kq, const struct kevent *changelist, int nchanges,
|
|
struct kevent *eventlist, int nevents,
|
|
const struct timespec *timeout);
|
|
__END_DECLS
|
|
|
|
#endif /* !_KERNEL */
|
|
|
|
#endif /* !_SYS_EVENT_H_ */
|