718cf2ccb9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
152 lines
4.9 KiB
C
152 lines
4.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/**
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* @file
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*
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* @brief This file contains the base subject method implementations and
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* any constants or structures private to the base subject object.
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* A subject is a participant in the observer design pattern. A
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* subject represents the object being observed.
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*/
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#include <dev/isci/scil/sci_types.h>
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#include <dev/isci/scil/sci_base_subject.h>
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#include <dev/isci/scil/sci_base_observer.h>
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#if defined(SCI_LOGGING)
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//******************************************************************************
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//* P R O T E C T E D M E T H O D S
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//******************************************************************************
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void sci_base_subject_construct(
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SCI_BASE_SUBJECT_T *this_subject
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)
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{
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this_subject->observer_list = NULL;
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}
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// ---------------------------------------------------------------------------
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void sci_base_subject_notify(
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SCI_BASE_SUBJECT_T *this_subject
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)
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{
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SCI_BASE_OBSERVER_T *this_observer = this_subject->observer_list;
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while (this_observer != NULL)
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{
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sci_base_observer_update(this_observer, this_subject);
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this_observer = this_observer->next;
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}
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}
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// ---------------------------------------------------------------------------
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void sci_base_subject_attach_observer(
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SCI_BASE_SUBJECT_T *this_subject,
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SCI_BASE_OBSERVER_T *observer
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)
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{
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observer->next = this_subject->observer_list;
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this_subject->observer_list = observer;
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}
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// ---------------------------------------------------------------------------
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void sci_base_subject_detach_observer(
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SCI_BASE_SUBJECT_T *this_subject,
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SCI_BASE_OBSERVER_T *observer
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)
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{
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SCI_BASE_OBSERVER_T *current_observer = this_subject->observer_list;
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SCI_BASE_OBSERVER_T *previous_observer = NULL;
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// Search list for the item to remove
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while (
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current_observer != NULL
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&& current_observer != observer
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)
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{
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previous_observer = current_observer;
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current_observer = current_observer->next;
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}
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// Was this observer in the list?
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if (current_observer == observer)
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{
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if (previous_observer != NULL)
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{
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// Remove from middle or end of list
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previous_observer->next = observer->next;
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}
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else
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{
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// Remove from the front of the list
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this_subject->observer_list = observer->next;
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}
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// protect the list so people dont follow bad pointers
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observer->next = NULL;
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}
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}
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#endif // defined(SCI_LOGGING)
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