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gecode
kernel
activity.cpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2012
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*
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* Last modified:
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* $Date: 2013-04-17 20:35:47 +0200 (Wed, 17 Apr 2013) $ by $Author: schulte $
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* $Revision: 13584 $
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <
gecode/kernel.hh
>
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namespace
Gecode {
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const
Activity
Activity::def
;
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void
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Activity::init
(
int
n
,
double
d
) {
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assert(
storage
== NULL);
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storage
=
new
Storage
(n,d);
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}
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Activity::Activity
(
const
Activity
&
a
)
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: storage(a.storage) {
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if
(
storage
!= NULL) {
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acquire
();
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storage
->
use_cnt
++;
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release
();
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}
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}
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Activity
&
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Activity::operator =
(
const
Activity
&
a
) {
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if
(
storage
!= a.
storage
) {
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if
(
storage
!= NULL) {
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bool
done;
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acquire
();
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done = (--
storage
->
use_cnt
== 0);
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release
();
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if
(done)
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delete
storage
;
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}
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storage
= a.
storage
;
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if
(
storage
!= NULL) {
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acquire
();
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storage
->
use_cnt
++;
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release
();
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}
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}
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return
*
this
;
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}
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Activity::~Activity
(
void
) {
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if
(
storage
== NULL)
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return
;
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bool
done;
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acquire
();
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done = (--
storage
->
use_cnt
== 0);
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release
();
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if
(done)
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delete
storage
;
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}
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void
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Activity::update
(
Space
&,
bool
,
Activity
&
a
) {
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const_cast<
Activity
&
>
(
a
).
acquire
();
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storage
= a.
storage
;
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storage
->
use_cnt
++;
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const_cast<
Activity
&
>
(
a
).
release
();
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}
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void
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Activity::set
(
Space
&,
double
a
) {
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acquire
();
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for
(
int
i
=
storage
->
n
;
i
--; )
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storage
->
a
[
i
] =
a
;
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release
();
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}
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void
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Activity::decay
(
Space
&,
double
d
) {
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acquire
();
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storage
->
d
=
d
;
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release
();
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}
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double
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Activity::decay
(
const
Space
&)
const
{
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double
d
;
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const_cast<
Activity
*
>
(
this
)->
acquire
();
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d =
storage
->
d
;
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const_cast<
Activity
*
>
(
this
)->
release
();
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return
d
;
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}
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}
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// STATISTICS: kernel-branch