xnu-1456.1.26.tar.gz

[apple/xnu.git] / bsd / sys / eventvar.h

diff --git a/bsd/sys/eventvar.h b/bsd/sys/eventvar.h
index 41f4889510712ef35b7bb21e7868325afc49fcf2..b941875728cf44fbe6ddba7142307246865ab4bb 100644 (file)
--- a/bsd/sys/eventvar.h
+++ b/bsd/sys/eventvar.h
@@ -1,16 +1,19 @@
 /*
  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
@@ -20,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*-
  * Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org>
@@ -53,6 +56,7 @@
 #ifndef _SYS_EVENTVAR_H_
 #define _SYS_EVENTVAR_H_
 
+#include <sys/event.h>
 #include <sys/select.h>
 #include <kern/kern_types.h>
 
@@ -60,19 +64,31 @@
 #define KQEXTENT       256             /* linear growth by this amount */
 
 struct kqueue {
-#if 0
-       /* threads, member notes, and notes for us in parent sets */
-       struct          wait_queue_set kq_wqs;
-#else
+       wait_queue_set_t kq_wqs;        /* private wait queue set */
+       decl_lck_spin_data( ,kq_lock)   /* kqueue lock */
        int             kq_state;
-       int             kq_lock;                /* space for a lock */
-       TAILQ_HEAD(kqlist, knote) kq_head;      /* list of pending events */
-       int             kq_count;               /* number of pending events */
-#endif
-       struct          selinfo kq_sel;         /* JMM - parent set at some point */
-       struct          filedesc *kq_fdp;
+       int             kq_count;       /* number of queued events */
+       uint32_t        kq_nprocess;    /* atomic counter for kqueue_process */
+       struct kqtailq  kq_head;        /* list of queued events */
+       struct selinfo  kq_sel;         /* parent select/kqueue info */
+       struct proc     *kq_p;          /* process containing kqueue */
+       int             kq_level;       /* nesting level */
+
 #define KQ_SEL         0x01
 #define KQ_SLEEP       0x02
+#define KQ_PROCWAIT    0x04
+#define KQ_KEV32       0x08
+#define KQ_KEV64       0x10
 };
 
+extern struct kqueue *kqueue_alloc(struct proc *);
+extern void kqueue_dealloc(struct kqueue *);
+
+typedef int (*kevent_callback_t)(struct kqueue *, struct kevent64_s *, void *);
+typedef void (*kqueue_continue_t)(struct kqueue *, void *, int);
+
+extern int kevent_register(struct kqueue *, struct kevent64_s *, struct proc *);
+extern int kqueue_scan(struct kqueue *, kevent_callback_t, kqueue_continue_t,
+                      void *, struct timeval *, struct proc *);
+
 #endif /* !_SYS_EVENTVAR_H_ */