Jip J. Dekker
2572df0663
git-subtree-dir: software/gecode_base git-subtree-split: bbefcea214fec798a0f5acc442581984555acd21
115 lines
3.0 KiB
C++
115 lines
3.0 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
|
|
/*
|
|
* Main authors:
|
|
* Christian Schulte <schulte@gecode.org>
|
|
*
|
|
* Copyright:
|
|
* Christian Schulte, 2004
|
|
*
|
|
* This file is part of Gecode, the generic constraint
|
|
* development environment:
|
|
* http://www.gecode.org
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
#ifndef GECODE_SEARCH_WORKER_HH
|
|
#define GECODE_SEARCH_WORKER_HH
|
|
|
|
#include <gecode/search.hh>
|
|
|
|
namespace Gecode { namespace Search {
|
|
|
|
/**
|
|
* \brief %Search worker statistics
|
|
*/
|
|
class Worker : public Statistics {
|
|
protected:
|
|
/// Whether engine has been stopped
|
|
bool _stopped;
|
|
/// Depth of root node (for work stealing)
|
|
unsigned long int root_depth;
|
|
public:
|
|
/// Initialize
|
|
Worker(void);
|
|
/// Reset stop information
|
|
void start(void);
|
|
/// Check whether engine must be stopped
|
|
bool stop(const Options& o);
|
|
/// Check whether engine has been stopped
|
|
bool stopped(void) const;
|
|
/// Reset statistics with root depth \a d
|
|
void reset(unsigned long int d=0);
|
|
/// Record stack depth \a d
|
|
void stack_depth(unsigned long int d);
|
|
/// Return steal depth
|
|
unsigned long int steal_depth(unsigned long int d) const;
|
|
};
|
|
|
|
|
|
|
|
forceinline
|
|
Worker::Worker(void)
|
|
: _stopped(false), root_depth(0) {}
|
|
|
|
forceinline void
|
|
Worker::start(void) {
|
|
_stopped = false;
|
|
}
|
|
|
|
forceinline bool
|
|
Worker::stop(const Options& o) {
|
|
if (o.stop == nullptr)
|
|
return false;
|
|
_stopped |= o.stop->stop(*this,o);
|
|
return _stopped;
|
|
}
|
|
|
|
forceinline bool
|
|
Worker::stopped(void) const {
|
|
return _stopped;
|
|
}
|
|
|
|
forceinline void
|
|
Worker::reset(unsigned long int d) {
|
|
Statistics::reset();
|
|
root_depth = d;
|
|
if (depth < d)
|
|
depth = d;
|
|
}
|
|
|
|
forceinline void
|
|
Worker::stack_depth(unsigned long int d) {
|
|
if (depth < root_depth + d)
|
|
depth = root_depth + d;
|
|
}
|
|
|
|
forceinline unsigned long int
|
|
Worker::steal_depth(unsigned long int d) const {
|
|
return root_depth + d;
|
|
}
|
|
|
|
}}
|
|
|
|
#endif
|
|
|
|
// STATISTICS: search-other
|