diff options
Diffstat (limited to 'sys/sys/eventvar.h')
| -rw-r--r-- | sys/sys/eventvar.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/sys/sys/eventvar.h b/sys/sys/eventvar.h new file mode 100644 index 000000000000..4721e614f421 --- /dev/null +++ b/sys/sys/eventvar.h @@ -0,0 +1,66 @@ +/*- + * Copyright (c) 1999,2000 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_EVENTVAR_H_ +#define _SYS_EVENTVAR_H_ + +#ifndef _KERNEL +#error "no user-serviceable parts inside" +#endif + +#include <sys/_task.h> + +#define KQ_NEVENTS 8 /* minimize copy{in,out} calls */ +#define KQEXTENT 256 /* linear growth by this amount */ + +struct kqueue { + struct mtx kq_lock; + int kq_refcnt; + TAILQ_ENTRY(kqueue) kq_list; + TAILQ_HEAD(, knote) kq_head; /* list of pending event */ + int kq_count; /* number of pending events */ + struct selinfo kq_sel; + struct sigio *kq_sigio; + struct filedesc *kq_fdp; + int kq_state; +#define KQ_SEL 0x01 +#define KQ_SLEEP 0x02 +#define KQ_FLUXWAIT 0x04 /* waiting for a in flux kn */ +#define KQ_ASYNC 0x08 +#define KQ_CLOSING 0x10 +#define KQ_TASKSCHED 0x20 /* task scheduled */ +#define KQ_TASKDRAIN 0x40 /* waiting for task to drain */ + int kq_knlistsize; /* size of knlist */ + struct klist *kq_knlist; /* list of knotes */ + u_long kq_knhashmask; /* size of knhash */ + struct klist *kq_knhash; /* hash table for knotes */ + struct task kq_task; + struct ucred *kq_cred; +}; + +#endif /* !_SYS_EVENTVAR_H_ */ |