source: mainline/uspace/lib/c/generic/event.c@ f9061b4

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since f9061b4 was f9061b4, checked in by Martin Decky <martin@…>, 14 years ago

add kernel event notification masking (currently used only for EVENT_KLOG)
improve kernel event notification API

  • Property mode set to 100644
File size: 2.1 KB
Line 
1/*
2 * Copyright (c) 2009 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup libc
30 * @{
31 * @}
32 */
33
34/** @addtogroup libc
35 */
36/** @file
37 */
38
39#include <libc.h>
40#include <event.h>
41#include <kernel/ipc/event_types.h>
42
43/** Subscribe event notifications.
44 *
45 * @param evno Event type to subscribe.
46 * @param imethod Use this interface and method for notifying me.
47 *
48 * @return Value returned by the kernel.
49 *
50 */
51int event_subscribe(event_type_t evno, sysarg_t imethod)
52{
53 return __SYSCALL2(SYS_EVENT_SUBSCRIBE, (sysarg_t) evno,
54 (sysarg_t) imethod);
55}
56
57/** Unmask event notifications.
58 *
59 * @param evno Event type to unmask.
60 *
61 * @return Value returned by the kernel.
62 *
63 */
64int event_unmask(event_type_t evno)
65{
66 return __SYSCALL1(SYS_EVENT_UNMASK, (sysarg_t) evno);
67}
68
69/** @}
70 */
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