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/* -*- 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
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