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gecode
kernel
action.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: 2017-02-28 00:23:09 +0100 (Tue, 28 Feb 2017) $ by $Author: schulte $
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* $Revision: 15510 $
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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
Action
Action::def
;
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Action::Action
(
const
Action
&
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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Action
&
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Action::operator =
(
const
Action
&
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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Action::~Action
(
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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Action::update
(
Space
&,
bool
,
Action
&
a
) {
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const_cast<
Action
&
>
(
a
).
acquire
();
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storage
=
a
.storage;
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storage
->
use_cnt
++;
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const_cast<
Action
&
>
(
a
).
release
();
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}
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void
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Action::decay
(
Space
&,
double
d
) {
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if
((
d
< 0.0) || (
d
> 1.0))
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throw
IllegalDecay
(
"Action"
);
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acquire
();
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storage
->
invd
= 1.0 /
d
;
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release
();
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}
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double
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Action::decay
(
const
Space
&)
const
{
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double
d
;
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const_cast<
Action
*
>
(
this
)->
acquire
();
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d
= 1.0 /
storage
->
invd
;
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const_cast<
Action
*
>
(
this
)->
release
();
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return
d
;
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}
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}
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// STATISTICS: kernel-branch
Gecode::Action
Class for action management.
Definition:
action.hpp:46
kernel.hh
Gecode::Action::storage
Storage * storage
Pointer to storage object.
Definition:
action.hpp:74
Gecode::Space
Computation spaces.
Definition:
core.hpp:1748
Gecode
Gecode toplevel namespace
Gecode::Action::operator=
Action & operator=(const Action &a)
Assignment operator.
Definition:
action.cpp:54
Gecode::Action::def
static const Action def
Default (empty) action information.
Definition:
action.hpp:109
a
struct Gecode::@579::NNF::@61::@63 a
For atomic nodes.
Gecode::Action::Action
Action(void)
Construct as not yet intialized.
Definition:
action.hpp:329
Gecode::Action::acquire
void acquire(void)
Acquire mutex.
Definition:
action.hpp:319
Gecode::Action::~Action
~Action(void)
Destructor.
Definition:
action.cpp:74
Gecode::Action::Storage::use_cnt
unsigned int use_cnt
How many references exist for this object.
Definition:
action.hpp:56
Gecode::Action::release
void release(void)
Release mutex.
Definition:
action.hpp:323
Test::Int::Distinct::d
Gecode::IntSet d(v, 7)
Gecode::IllegalDecay
Exception: illegal decay factor
Definition:
exception.hpp:111
Gecode::Action::update
void update(int i)
Update action value at position i.
Definition:
action.hpp:306
Gecode::Action::Storage::invd
double invd
Inverse decay factor.
Definition:
action.hpp:62
Gecode::Action::decay
void decay(Space &home, double d)
Set decay factor to d.
Definition:
action.cpp:94