xref: /freebsd/sys/dev/isci/scil/sci_base_observer.c (revision b1f9167f94059fd55c630891d359bcff987bd7eb)
1 /*-
2  * This file is provided under a dual BSD/GPLv2 license.  When using or
3  * redistributing this file, you may do so under either license.
4  *
5  * GPL LICENSE SUMMARY
6  *
7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of version 2 of the GNU General Public License as
11  * published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
21  * The full GNU General Public License is included in this distribution
22  * in the file called LICENSE.GPL.
23  *
24  * BSD LICENSE
25  *
26  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
27  * All rights reserved.
28  *
29  * Redistribution and use in source and binary forms, with or without
30  * modification, are permitted provided that the following conditions
31  * are met:
32  *
33  *   * Redistributions of source code must retain the above copyright
34  *     notice, this list of conditions and the following disclaimer.
35  *   * Redistributions in binary form must reproduce the above copyright
36  *     notice, this list of conditions and the following disclaimer in
37  *     the documentation and/or other materials provided with the
38  *     distribution.
39  *
40  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
41  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
42  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
43  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
44  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
46  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
47  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
48  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
49  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
50  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
51  */
52 
53 #include <sys/cdefs.h>
54 __FBSDID("$FreeBSD$");
55 
56 /**
57  * @file
58  *
59  * @brief This file implements the functionality common to all observer
60  *        objects.
61  */
62 
63 #include <dev/isci/scil/sci_types.h>
64 #include <dev/isci/scil/sci_base_subject.h>
65 #include <dev/isci/scil/sci_base_observer.h>
66 
67 #if defined(SCI_LOGGING)
68 
69 //******************************************************************************
70 //* P U B L I C   M E T H O D S
71 //******************************************************************************
72 
73 void sci_base_observer_construct(
74    struct SCI_BASE_OBSERVER *this_observer,
75    SCI_BASE_OBSERVER_UPDATE_T update
76 )
77 {
78    this_observer->next = NULL;
79    this_observer->update = update;
80 }
81 
82 // ---------------------------------------------------------------------------
83 
84 void sci_base_observer_initialize(
85    SCI_BASE_OBSERVER_T        * the_observer,
86    SCI_BASE_OBSERVER_UPDATE_T   update,
87    SCI_BASE_SUBJECT_T         * the_subject
88 )
89 {
90    sci_base_observer_construct(the_observer, update);
91    sci_base_subject_attach_observer(the_subject, the_observer);
92 }
93 
94 // ---------------------------------------------------------------------------
95 
96 void sci_base_observer_update(
97    SCI_BASE_OBSERVER_T *this_observer,
98    SCI_BASE_SUBJECT_T  *the_subject
99 )
100 {
101    if (this_observer->update != NULL)
102    {
103       this_observer->update(this_observer, the_subject);
104    }
105 }
106 
107 #endif // defined(SCI_LOGGING)
108