[8cb2882] | 1 | /*- |
---|
[bf026dd4] | 2 | * SPDX-License-Identifier: BSD-2-Clause-FreeBSD |
---|
| 3 | * |
---|
[8cb2882] | 4 | * Copyright (c) 1999,2000,2001 Jonathan Lemon <jlemon@FreeBSD.org> |
---|
| 5 | * All rights reserved. |
---|
| 6 | * |
---|
| 7 | * Redistribution and use in source and binary forms, with or without |
---|
| 8 | * modification, are permitted provided that the following conditions |
---|
| 9 | * are met: |
---|
| 10 | * 1. Redistributions of source code must retain the above copyright |
---|
| 11 | * notice, this list of conditions and the following disclaimer. |
---|
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
---|
| 13 | * notice, this list of conditions and the following disclaimer in the |
---|
| 14 | * documentation and/or other materials provided with the distribution. |
---|
| 15 | * |
---|
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
---|
| 17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
---|
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
---|
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
---|
| 20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
---|
| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
---|
| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
---|
| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
---|
| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
---|
| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
---|
| 26 | * SUCH DAMAGE. |
---|
| 27 | * |
---|
[b3bfc242] | 28 | * $FreeBSD: head/sys/sys/event.h 313704 2017-02-13 19:00:09Z ed $ |
---|
[8cb2882] | 29 | */ |
---|
| 30 | |
---|
| 31 | #ifndef _SYS_EVENT_H_ |
---|
| 32 | #define _SYS_EVENT_H_ |
---|
| 33 | |
---|
[b3bfc242] | 34 | #include <sys/_types.h> |
---|
| 35 | #include <sys/queue.h> |
---|
[8cb2882] | 36 | |
---|
| 37 | #define EVFILT_READ (-1) |
---|
| 38 | #define EVFILT_WRITE (-2) |
---|
| 39 | #define EVFILT_AIO (-3) /* attached to aio requests */ |
---|
| 40 | #define EVFILT_VNODE (-4) /* attached to vnodes */ |
---|
| 41 | #define EVFILT_PROC (-5) /* attached to struct proc */ |
---|
| 42 | #define EVFILT_SIGNAL (-6) /* attached to struct proc */ |
---|
| 43 | #define EVFILT_TIMER (-7) /* timers */ |
---|
[8b8d05f] | 44 | #define EVFILT_PROCDESC (-8) /* attached to process descriptors */ |
---|
[8cb2882] | 45 | #define EVFILT_FS (-9) /* filesystem events */ |
---|
| 46 | #define EVFILT_LIO (-10) /* attached to lio requests */ |
---|
| 47 | #define EVFILT_USER (-11) /* User events */ |
---|
[8b8d05f] | 48 | #define EVFILT_SENDFILE (-12) /* attached to sendfile requests */ |
---|
[b3bfc242] | 49 | #define EVFILT_EMPTY (-13) /* empty send socket buf */ |
---|
| 50 | #define EVFILT_SYSCOUNT 13 |
---|
[8cb2882] | 51 | |
---|
[b37ef68] | 52 | #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L |
---|
| 53 | #define EV_SET(kevp_, a, b, c, d, e, f) do { \ |
---|
| 54 | *(kevp_) = (struct kevent){ \ |
---|
| 55 | .ident = (a), \ |
---|
| 56 | .filter = (b), \ |
---|
| 57 | .flags = (c), \ |
---|
| 58 | .fflags = (d), \ |
---|
| 59 | .data = (e), \ |
---|
| 60 | .udata = (f), \ |
---|
| 61 | .ext[0] = 0, \ |
---|
| 62 | .ext[1] = 0, \ |
---|
| 63 | .ext[2] = 0, \ |
---|
| 64 | .ext[3] = 0, \ |
---|
| 65 | }; \ |
---|
| 66 | } while(0) |
---|
| 67 | #else /* Pre-C99 or not STDC (e.g., C++) */ |
---|
| 68 | /* The definition of the local variable kevp could possibly conflict |
---|
| 69 | * with a user-defined value passed in parameters a-f. |
---|
| 70 | */ |
---|
[8cb2882] | 71 | #define EV_SET(kevp_, a, b, c, d, e, f) do { \ |
---|
| 72 | struct kevent *kevp = (kevp_); \ |
---|
| 73 | (kevp)->ident = (a); \ |
---|
| 74 | (kevp)->filter = (b); \ |
---|
| 75 | (kevp)->flags = (c); \ |
---|
| 76 | (kevp)->fflags = (d); \ |
---|
| 77 | (kevp)->data = (e); \ |
---|
| 78 | (kevp)->udata = (f); \ |
---|
[e9b708a] | 79 | (kevp)->ext[0] = 0; \ |
---|
| 80 | (kevp)->ext[1] = 0; \ |
---|
| 81 | (kevp)->ext[2] = 0; \ |
---|
| 82 | (kevp)->ext[3] = 0; \ |
---|
[8cb2882] | 83 | } while(0) |
---|
[b37ef68] | 84 | #endif |
---|
[8cb2882] | 85 | |
---|
| 86 | struct kevent { |
---|
[b3bfc242] | 87 | __uintptr_t ident; /* identifier for this event */ |
---|
[8cb2882] | 88 | short filter; /* filter for event */ |
---|
[b3bfc242] | 89 | unsigned short flags; |
---|
| 90 | unsigned int fflags; |
---|
[e9b708a] | 91 | __int64_t data; |
---|
[8cb2882] | 92 | void *udata; /* opaque user data identifier */ |
---|
[e9b708a] | 93 | __uint64_t ext[4]; |
---|
[8cb2882] | 94 | }; |
---|
| 95 | |
---|
[57c03363] | 96 | #if defined(_WANT_FREEBSD11_KEVENT) |
---|
| 97 | /* Older structure used in FreeBSD 11.x and older. */ |
---|
| 98 | struct kevent_freebsd11 { |
---|
| 99 | __uintptr_t ident; /* identifier for this event */ |
---|
| 100 | short filter; /* filter for event */ |
---|
| 101 | unsigned short flags; |
---|
| 102 | unsigned int fflags; |
---|
| 103 | __intptr_t data; |
---|
| 104 | void *udata; /* opaque user data identifier */ |
---|
| 105 | }; |
---|
| 106 | #endif |
---|
| 107 | |
---|
| 108 | #if defined(_WANT_KEVENT32) || (defined(_KERNEL) && defined(__LP64__)) |
---|
| 109 | struct kevent32 { |
---|
| 110 | uint32_t ident; /* identifier for this event */ |
---|
| 111 | short filter; /* filter for event */ |
---|
| 112 | u_short flags; |
---|
| 113 | u_int fflags; |
---|
| 114 | #ifndef __amd64__ |
---|
| 115 | uint32_t pad0; |
---|
| 116 | #endif |
---|
| 117 | int32_t data1, data2; |
---|
| 118 | uint32_t udata; /* opaque user data identifier */ |
---|
| 119 | #ifndef __amd64__ |
---|
| 120 | uint32_t pad1; |
---|
| 121 | #endif |
---|
| 122 | uint32_t ext64[8]; |
---|
| 123 | }; |
---|
| 124 | |
---|
| 125 | #ifdef _WANT_FREEBSD11_KEVENT |
---|
| 126 | struct kevent32_freebsd11 { |
---|
| 127 | u_int32_t ident; /* identifier for this event */ |
---|
| 128 | short filter; /* filter for event */ |
---|
| 129 | u_short flags; |
---|
| 130 | u_int fflags; |
---|
| 131 | int32_t data; |
---|
| 132 | u_int32_t udata; /* opaque user data identifier */ |
---|
| 133 | }; |
---|
| 134 | #endif |
---|
| 135 | #endif |
---|
| 136 | |
---|
[8cb2882] | 137 | /* actions */ |
---|
| 138 | #define EV_ADD 0x0001 /* add event to kq (implies enable) */ |
---|
| 139 | #define EV_DELETE 0x0002 /* delete event from kq */ |
---|
| 140 | #define EV_ENABLE 0x0004 /* enable event */ |
---|
| 141 | #define EV_DISABLE 0x0008 /* disable event (not reported) */ |
---|
[8b8d05f] | 142 | #define EV_FORCEONESHOT 0x0100 /* enable _ONESHOT and force trigger */ |
---|
[8cb2882] | 143 | |
---|
| 144 | /* flags */ |
---|
| 145 | #define EV_ONESHOT 0x0010 /* only report one occurrence */ |
---|
| 146 | #define EV_CLEAR 0x0020 /* clear event state after reporting */ |
---|
| 147 | #define EV_RECEIPT 0x0040 /* force EV_ERROR on success, data=0 */ |
---|
| 148 | #define EV_DISPATCH 0x0080 /* disable event after reporting */ |
---|
| 149 | |
---|
| 150 | #define EV_SYSFLAGS 0xF000 /* reserved by system */ |
---|
[353506b9] | 151 | #define EV_DROP 0x1000 /* note should be dropped */ |
---|
[8cb2882] | 152 | #define EV_FLAG1 0x2000 /* filter-specific flag */ |
---|
[8b8d05f] | 153 | #define EV_FLAG2 0x4000 /* filter-specific flag */ |
---|
[8cb2882] | 154 | |
---|
| 155 | /* returned values */ |
---|
| 156 | #define EV_EOF 0x8000 /* EOF detected */ |
---|
| 157 | #define EV_ERROR 0x4000 /* error, data contains errno */ |
---|
| 158 | |
---|
| 159 | /* |
---|
| 160 | * data/hint flags/masks for EVFILT_USER, shared with userspace |
---|
| 161 | * |
---|
| 162 | * On input, the top two bits of fflags specifies how the lower twenty four |
---|
| 163 | * bits should be applied to the stored value of fflags. |
---|
| 164 | * |
---|
| 165 | * On output, the top two bits will always be set to NOTE_FFNOP and the |
---|
| 166 | * remaining twenty four bits will contain the stored fflags value. |
---|
| 167 | */ |
---|
| 168 | #define NOTE_FFNOP 0x00000000 /* ignore input fflags */ |
---|
| 169 | #define NOTE_FFAND 0x40000000 /* AND fflags */ |
---|
| 170 | #define NOTE_FFOR 0x80000000 /* OR fflags */ |
---|
| 171 | #define NOTE_FFCOPY 0xc0000000 /* copy fflags */ |
---|
| 172 | #define NOTE_FFCTRLMASK 0xc0000000 /* masks for operations */ |
---|
| 173 | #define NOTE_FFLAGSMASK 0x00ffffff |
---|
| 174 | |
---|
| 175 | #define NOTE_TRIGGER 0x01000000 /* Cause the event to be |
---|
| 176 | triggered for output. */ |
---|
| 177 | |
---|
| 178 | /* |
---|
| 179 | * data/hint flags for EVFILT_{READ|WRITE}, shared with userspace |
---|
| 180 | */ |
---|
| 181 | #define NOTE_LOWAT 0x0001 /* low water mark */ |
---|
[8b8d05f] | 182 | #define NOTE_FILE_POLL 0x0002 /* behave like poll() */ |
---|
[8cb2882] | 183 | |
---|
| 184 | /* |
---|
| 185 | * data/hint flags for EVFILT_VNODE, shared with userspace |
---|
| 186 | */ |
---|
| 187 | #define NOTE_DELETE 0x0001 /* vnode was removed */ |
---|
| 188 | #define NOTE_WRITE 0x0002 /* data contents changed */ |
---|
| 189 | #define NOTE_EXTEND 0x0004 /* size increased */ |
---|
| 190 | #define NOTE_ATTRIB 0x0008 /* attributes changed */ |
---|
| 191 | #define NOTE_LINK 0x0010 /* link count changed */ |
---|
| 192 | #define NOTE_RENAME 0x0020 /* vnode was renamed */ |
---|
| 193 | #define NOTE_REVOKE 0x0040 /* vnode access was revoked */ |
---|
[8b8d05f] | 194 | #define NOTE_OPEN 0x0080 /* vnode was opened */ |
---|
| 195 | #define NOTE_CLOSE 0x0100 /* file closed, fd did not |
---|
| 196 | allowed write */ |
---|
| 197 | #define NOTE_CLOSE_WRITE 0x0200 /* file closed, fd did allowed |
---|
| 198 | write */ |
---|
| 199 | #define NOTE_READ 0x0400 /* file was read */ |
---|
[8cb2882] | 200 | |
---|
| 201 | /* |
---|
[8b8d05f] | 202 | * data/hint flags for EVFILT_PROC and EVFILT_PROCDESC, shared with userspace |
---|
[8cb2882] | 203 | */ |
---|
| 204 | #define NOTE_EXIT 0x80000000 /* process exited */ |
---|
| 205 | #define NOTE_FORK 0x40000000 /* process forked */ |
---|
| 206 | #define NOTE_EXEC 0x20000000 /* process exec'd */ |
---|
| 207 | #define NOTE_PCTRLMASK 0xf0000000 /* mask for hint bits */ |
---|
| 208 | #define NOTE_PDATAMASK 0x000fffff /* mask for pid */ |
---|
| 209 | |
---|
| 210 | /* additional flags for EVFILT_PROC */ |
---|
| 211 | #define NOTE_TRACK 0x00000001 /* follow across forks */ |
---|
| 212 | #define NOTE_TRACKERR 0x00000002 /* could not track child */ |
---|
| 213 | #define NOTE_CHILD 0x00000004 /* am a child process */ |
---|
| 214 | |
---|
[8b8d05f] | 215 | /* additional flags for EVFILT_TIMER */ |
---|
| 216 | #define NOTE_SECONDS 0x00000001 /* data is seconds */ |
---|
| 217 | #define NOTE_MSECONDS 0x00000002 /* data is milliseconds */ |
---|
| 218 | #define NOTE_USECONDS 0x00000004 /* data is microseconds */ |
---|
| 219 | #define NOTE_NSECONDS 0x00000008 /* data is nanoseconds */ |
---|
[e9b708a] | 220 | #define NOTE_ABSTIME 0x00000010 /* timeout is absolute */ |
---|
[8b8d05f] | 221 | |
---|
[8cb2882] | 222 | struct knote; |
---|
| 223 | SLIST_HEAD(klist, knote); |
---|
| 224 | struct kqueue; |
---|
[353506b9] | 225 | TAILQ_HEAD(kqlist, kqueue); |
---|
[8cb2882] | 226 | struct knlist { |
---|
| 227 | struct klist kl_list; |
---|
| 228 | void (*kl_lock)(void *); /* lock function */ |
---|
| 229 | void (*kl_unlock)(void *); |
---|
| 230 | void (*kl_assert_locked)(void *); |
---|
| 231 | void (*kl_assert_unlocked)(void *); |
---|
[8b8d05f] | 232 | void *kl_lockarg; /* argument passed to lock functions */ |
---|
| 233 | int kl_autodestroy; |
---|
[8cb2882] | 234 | }; |
---|
| 235 | |
---|
| 236 | |
---|
| 237 | #ifdef _KERNEL |
---|
| 238 | |
---|
| 239 | /* |
---|
| 240 | * Flags for knote call |
---|
| 241 | */ |
---|
| 242 | #define KNF_LISTLOCKED 0x0001 /* knlist is locked */ |
---|
| 243 | #define KNF_NOKQLOCK 0x0002 /* do not keep KQ_LOCK */ |
---|
| 244 | |
---|
[f51aec8] | 245 | #define KNOTE(list, hint, flags) knote(list, hint, flags) |
---|
[8cb2882] | 246 | #define KNOTE_LOCKED(list, hint) knote(list, hint, KNF_LISTLOCKED) |
---|
| 247 | #define KNOTE_UNLOCKED(list, hint) knote(list, hint, 0) |
---|
| 248 | |
---|
| 249 | #define KNLIST_EMPTY(list) SLIST_EMPTY(&(list)->kl_list) |
---|
| 250 | |
---|
| 251 | /* |
---|
| 252 | * Flag indicating hint is a signal. Used by EVFILT_SIGNAL, and also |
---|
| 253 | * shared by EVFILT_PROC (all knotes attached to p->p_klist) |
---|
| 254 | */ |
---|
| 255 | #define NOTE_SIGNAL 0x08000000 |
---|
| 256 | |
---|
| 257 | /* |
---|
| 258 | * Hint values for the optional f_touch event filter. If f_touch is not set |
---|
| 259 | * to NULL and f_isfd is zero the f_touch filter will be called with the type |
---|
| 260 | * argument set to EVENT_REGISTER during a kevent() system call. It is also |
---|
| 261 | * called under the same conditions with the type argument set to EVENT_PROCESS |
---|
| 262 | * when the event has been triggered. |
---|
| 263 | */ |
---|
| 264 | #define EVENT_REGISTER 1 |
---|
| 265 | #define EVENT_PROCESS 2 |
---|
| 266 | |
---|
| 267 | struct filterops { |
---|
| 268 | int f_isfd; /* true if ident == filedescriptor */ |
---|
| 269 | int (*f_attach)(struct knote *kn); |
---|
| 270 | void (*f_detach)(struct knote *kn); |
---|
| 271 | int (*f_event)(struct knote *kn, long hint); |
---|
| 272 | void (*f_touch)(struct knote *kn, struct kevent *kev, u_long type); |
---|
| 273 | }; |
---|
| 274 | |
---|
| 275 | /* |
---|
[45ae4a8] | 276 | * An in-flux knote cannot be dropped from its kq while the kq is |
---|
| 277 | * unlocked. If the KN_SCAN flag is not set, a thread can only set |
---|
| 278 | * kn_influx when it is exclusive owner of the knote state, and can |
---|
| 279 | * modify kn_status as if it had the KQ lock. KN_SCAN must not be set |
---|
| 280 | * on a knote which is already in flux. |
---|
[8cb2882] | 281 | * |
---|
| 282 | * kn_sfflags, kn_sdata, and kn_kevent are protected by the knlist lock. |
---|
| 283 | */ |
---|
| 284 | struct knote { |
---|
| 285 | SLIST_ENTRY(knote) kn_link; /* for kq */ |
---|
| 286 | SLIST_ENTRY(knote) kn_selnext; /* for struct selinfo */ |
---|
| 287 | struct knlist *kn_knlist; /* f_attach populated */ |
---|
| 288 | TAILQ_ENTRY(knote) kn_tqe; |
---|
| 289 | struct kqueue *kn_kq; /* which queue we are on */ |
---|
| 290 | struct kevent kn_kevent; |
---|
[45ae4a8] | 291 | void *kn_hook; |
---|
| 292 | int kn_hookid; |
---|
[8cb2882] | 293 | int kn_status; /* protected by kq lock */ |
---|
| 294 | #define KN_ACTIVE 0x01 /* event has been triggered */ |
---|
| 295 | #define KN_QUEUED 0x02 /* event is on queue */ |
---|
| 296 | #define KN_DISABLED 0x04 /* event is disabled */ |
---|
| 297 | #define KN_DETACHED 0x08 /* knote is detached */ |
---|
| 298 | #define KN_MARKER 0x20 /* ignore this knote */ |
---|
| 299 | #define KN_KQUEUE 0x40 /* this knote belongs to a kq */ |
---|
| 300 | #define KN_HASKQLOCK 0x80 /* for _inevent */ |
---|
[353506b9] | 301 | #define KN_SCAN 0x100 /* flux set in kqueue_scan() */ |
---|
[45ae4a8] | 302 | int kn_influx; |
---|
[8cb2882] | 303 | int kn_sfflags; /* saved filter flags */ |
---|
[e9b708a] | 304 | int64_t kn_sdata; /* saved data field */ |
---|
[8cb2882] | 305 | union { |
---|
| 306 | struct file *p_fp; /* file data pointer */ |
---|
| 307 | struct proc *p_proc; /* proc pointer */ |
---|
[8b8d05f] | 308 | struct kaiocb *p_aio; /* AIO job pointer */ |
---|
| 309 | struct aioliojob *p_lio; /* LIO job pointer */ |
---|
| 310 | void *p_v; /* generic other pointer */ |
---|
[8cb2882] | 311 | } kn_ptr; |
---|
| 312 | struct filterops *kn_fop; |
---|
| 313 | |
---|
| 314 | #define kn_id kn_kevent.ident |
---|
| 315 | #define kn_filter kn_kevent.filter |
---|
| 316 | #define kn_flags kn_kevent.flags |
---|
| 317 | #define kn_fflags kn_kevent.fflags |
---|
| 318 | #define kn_data kn_kevent.data |
---|
| 319 | #define kn_fp kn_ptr.p_fp |
---|
| 320 | }; |
---|
| 321 | struct kevent_copyops { |
---|
| 322 | void *arg; |
---|
| 323 | int (*k_copyout)(void *arg, struct kevent *kevp, int count); |
---|
| 324 | int (*k_copyin)(void *arg, struct kevent *kevp, int count); |
---|
[e9b708a] | 325 | size_t kevent_size; |
---|
[8cb2882] | 326 | }; |
---|
| 327 | |
---|
| 328 | struct thread; |
---|
| 329 | struct proc; |
---|
| 330 | struct knlist; |
---|
| 331 | struct mtx; |
---|
[8b8d05f] | 332 | struct rwlock; |
---|
[8cb2882] | 333 | |
---|
[45ae4a8] | 334 | void knote(struct knlist *list, long hint, int lockflags); |
---|
| 335 | void knote_fork(struct knlist *list, int pid); |
---|
| 336 | struct knlist *knlist_alloc(struct mtx *lock); |
---|
| 337 | void knlist_detach(struct knlist *knl); |
---|
| 338 | void knlist_add(struct knlist *knl, struct knote *kn, int islocked); |
---|
| 339 | void knlist_remove(struct knlist *knl, struct knote *kn, int islocked); |
---|
| 340 | int knlist_empty(struct knlist *knl); |
---|
| 341 | void knlist_init(struct knlist *knl, void *lock, void (*kl_lock)(void *), |
---|
| 342 | void (*kl_unlock)(void *), void (*kl_assert_locked)(void *), |
---|
| 343 | void (*kl_assert_unlocked)(void *)); |
---|
| 344 | void knlist_init_mtx(struct knlist *knl, struct mtx *lock); |
---|
| 345 | void knlist_init_rw_reader(struct knlist *knl, struct rwlock *lock); |
---|
| 346 | void knlist_destroy(struct knlist *knl); |
---|
| 347 | void knlist_cleardel(struct knlist *knl, struct thread *td, |
---|
| 348 | int islocked, int killkn); |
---|
[8cb2882] | 349 | #define knlist_clear(knl, islocked) \ |
---|
[45ae4a8] | 350 | knlist_cleardel((knl), NULL, (islocked), 0) |
---|
[8cb2882] | 351 | #define knlist_delete(knl, td, islocked) \ |
---|
[45ae4a8] | 352 | knlist_cleardel((knl), (td), (islocked), 1) |
---|
| 353 | void knote_fdclose(struct thread *p, int fd); |
---|
| 354 | int kqfd_register(int fd, struct kevent *kev, struct thread *p, |
---|
| 355 | int waitok); |
---|
| 356 | int kqueue_add_filteropts(int filt, struct filterops *filtops); |
---|
| 357 | int kqueue_del_filteropts(int filt); |
---|
[8cb2882] | 358 | |
---|
| 359 | #else /* !_KERNEL */ |
---|
| 360 | |
---|
| 361 | #include <sys/cdefs.h> |
---|
| 362 | struct timespec; |
---|
| 363 | |
---|
| 364 | __BEGIN_DECLS |
---|
| 365 | int kqueue(void); |
---|
| 366 | int kevent(int kq, const struct kevent *changelist, int nchanges, |
---|
| 367 | struct kevent *eventlist, int nevents, |
---|
| 368 | const struct timespec *timeout); |
---|
| 369 | __END_DECLS |
---|
| 370 | |
---|
| 371 | #endif /* !_KERNEL */ |
---|
| 372 | |
---|
| 373 | #endif /* !_SYS_EVENT_H_ */ |
---|