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worker.hh
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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, 2004
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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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#ifndef __GECODE_SEARCH_WORKER_HH__
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#define __GECODE_SEARCH_WORKER_HH__
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#include <
gecode/search.hh
>
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namespace
Gecode
{
namespace
Search {
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class
Worker
:
public
Statistics
{
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protected
:
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bool
_stopped
;
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unsigned
long
int
root_depth
;
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public
:
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Worker
(
void
);
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void
start
(
void
);
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bool
stop
(
const
Options
& o);
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bool
stopped
(
void
)
const
;
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void
reset
(
unsigned
long
int
d
=0);
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void
stack_depth
(
unsigned
long
int
d
);
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unsigned
long
int
steal_depth
(
unsigned
long
int
d
)
const
;
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};
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forceinline
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Worker::Worker
(
void
)
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: _stopped(false), root_depth(0) {}
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forceinline
void
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Worker::start
(
void
) {
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_stopped
=
false
;
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}
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forceinline
bool
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Worker::stop
(
const
Options
& o) {
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if
(o.
stop
== NULL)
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return
false
;
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_stopped
|= o.
stop
->
stop
(*
this
,o);
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return
_stopped
;
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}
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forceinline
bool
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Worker::stopped
(
void
)
const
{
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return
_stopped
;
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}
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forceinline
void
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Worker::reset
(
unsigned
long
int
d
) {
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Statistics::reset
();
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root_depth
=
d
;
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if
(
depth
<
d
)
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depth
=
d
;
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}
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forceinline
void
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Worker::stack_depth
(
unsigned
long
int
d
) {
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if
(
depth
<
root_depth
+
d
)
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depth
=
root_depth
+
d
;
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}
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forceinline
unsigned
long
int
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Worker::steal_depth
(
unsigned
long
int
d
)
const
{
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return
root_depth
+
d
;
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}
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}}
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#endif
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// STATISTICS: search-other
Gecode::Search::Worker
Search worker statistics
Definition:
worker.hh:44
Gecode::Search::Options
Search engine options
Definition:
search.hh:746
Gecode::Search::Worker::stop
bool stop(const Options &o)
Check whether engine must be stopped.
Definition:
worker.hh:79
search.hh
Gecode::Search::Stop::stop
virtual bool stop(const Statistics &s, const Options &o)=0
Stop search, if returns true.
Gecode::Search::Statistics::depth
unsigned long int depth
Maximum depth of search stack.
Definition:
search.hh:154
Gecode
Gecode toplevel namespace
Gecode::Search::Worker::Worker
Worker(void)
Initialize.
Definition:
worker.hh:70
Gecode::Search::Options::stop
Stop * stop
Stop object for stopping search.
Definition:
search.hh:765
Gecode::Search::Worker::root_depth
unsigned long int root_depth
Depth of root node (for work stealing)
Definition:
worker.hh:49
Gecode::Search::Worker::steal_depth
unsigned long int steal_depth(unsigned long int d) const
Return steal depth.
Definition:
worker.hh:106
Gecode::Search::Worker::_stopped
bool _stopped
Whether engine has been stopped.
Definition:
worker.hh:47
Test::Int::Distinct::d
Gecode::IntSet d(v, 7)
Gecode::Search::Worker::stack_depth
void stack_depth(unsigned long int d)
Record stack depth d.
Definition:
worker.hh:100
forceinline
#define forceinline
Definition:
config.hpp:185
Gecode::Search::Worker::start
void start(void)
Reset stop information.
Definition:
worker.hh:74
Gecode::Search::Statistics::reset
void reset(void)
Reset.
Definition:
statistics.hpp:39
Gecode::Search::Worker::stopped
bool stopped(void) const
Check whether engine has been stopped.
Definition:
worker.hh:87
Gecode::Search::Statistics
Search engine statistics
Definition:
search.hh:147