1  /*
 2   * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
 3   *
 4   * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 5   *
 6   * This file contains Original Code and/or Modifications of Original Code
 7   * as defined in and that are subject to the Apple Public Source License
 8   * Version 2.0 (the 'License'). You may not use this file except in
 9   * compliance with the License. The rights granted to you under the License
10   * may not be used to create, or enable the creation or redistribution of,
11   * unlawful or unlicensed copies of an Apple operating system, or to
12   * circumvent, violate, or enable the circumvention or violation of, any
13   * terms of an Apple operating system software license agreement.
14   *
15   * Please obtain a copy of the License at
16   * http://www.opensource.apple.com/apsl/ and read it before using this file.
17   *
18   * The Original Code and all software distributed under the License are
19   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22   * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23   * Please see the License for the specific language governing rights and
24   * limitations under the License.
25   *
26   * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27   */
28  
29  /*
30   * devtimer.h
31   * - timer source based on <kern/thread_call.h>
32   */
33  
34  
35  #ifndef _NET_DEVTIMER_H
36  #define _NET_DEVTIMER_H
37  
38  #include <sys/types.h>
39  #include <sys/systm.h>
40  
41  #define DEVTIMER_USECS_PER_SEC          (1000 * 1000)
42  
43  enum {
44  	devtimer_process_func_event_lock,
45  	devtimer_process_func_event_unlock,
46  };
47  typedef int devtimer_process_func_event;
48  
49  typedef struct devtimer_s * devtimer_ref;
50  typedef void (*devtimer_process_func)(devtimer_ref timer,
51      devtimer_process_func_event event);
52  typedef void (*devtimer_timeout_func)(void * arg0, void * arg1, void * arg2);
53  
54  int
55  devtimer_valid(devtimer_ref timer);
56  
57  void
58  devtimer_retain(devtimer_ref timer);
59  
60  void *
61  devtimer_arg0(devtimer_ref timer);
62  
63  devtimer_ref
64  devtimer_create(devtimer_process_func process_func, void * arg0);
65  
66  void
67  devtimer_invalidate(devtimer_ref timer);
68  
69  void
70  devtimer_release(devtimer_ref timer);
71  
72  void
73  devtimer_set_absolute(devtimer_ref t,
74      struct timeval abs_time,
75      devtimer_timeout_func func,
76      void * arg1, void * arg2);
77  
78  void
79  devtimer_set_relative(devtimer_ref t,
80      struct timeval rel_time,
81      devtimer_timeout_func func,
82      void * arg1, void * arg2);
83  void
84  devtimer_cancel(devtimer_ref t);
85  
86  int
87  devtimer_enabled(devtimer_ref t);
88  
89  struct timeval
90  devtimer_current_time(void);
91  
92  int32_t
93  devtimer_current_secs(void);
94  
95  #endif /* _NET_DEVTIMER_H */