xnu-792.6.22.tar.gz

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

diff --git a/bsd/sys/eventvar.h b/bsd/sys/eventvar.h
index 41f4889510712ef35b7bb21e7868325afc49fcf2..8206a720122862e6577fc7b5ba7385d6d7e5fe58 100644 (file)
--- a/bsd/sys/eventvar.h
+++ b/bsd/sys/eventvar.h
@@ -3,22 +3,19 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
  * 
- * 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.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -53,6 +50,7 @@
 #ifndef _SYS_EVENTVAR_H_
 #define _SYS_EVENTVAR_H_
 
+#include <sys/event.h>
 #include <sys/select.h>
 #include <kern/kern_types.h>
 
@@ -60,19 +58,27 @@
 #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
+       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 */
+       struct kqtailq  kq_head;                /* list of queued events */
+       struct kqtailq  kq_inprocess;           /* list of in-process events */
+       struct selinfo  kq_sel;         /* parent select/kqueue info */
+       struct filedesc *kq_fdp;
+
 #define KQ_SEL         0x01
 #define KQ_SLEEP       0x02
+#define KQ_PROCWAIT    0x04
 };
 
+extern struct kqueue *kqueue_alloc(struct proc *);
+extern void kqueue_dealloc(struct kqueue *, struct proc *);
+
+typedef int (*kevent_callback_t)(struct kqueue *, struct kevent *, void *);
+typedef void (*kevent_continue_t)(struct kqueue *, void *, int);
+
+extern int kevent_register(struct kqueue *, struct kevent *, struct proc *);
+extern int kevent_scan(struct kqueue *, kevent_callback_t, kevent_continue_t,
+                      void *, struct timeval *, struct proc *);
+
 #endif /* !_SYS_EVENTVAR_H_ */