Something went wrong. Try again.
This repository has no description
Something went wrong. Try again.
8.3 kB · 265 lines
C++
at develop
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- *//* * Main authors: * Christian Schulte <schulte@gecode.org> * * Copyright: * Christian Schulte, 2009 * * 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. * */
namespace Gecode {
/** * \brief Wait propagator for single view * * Requires \code #include <gecode/kernel/wait.hh> \endcode * \ingroup FuncKernelProp */ template<class View> class UnaryWait : public Propagator { protected: /// View to wait for becoming assigned View x; /// Continuation to execute SharedData<std::function<void(Space& home)>> c; /// Constructor for creation UnaryWait(Home home, View x, std::function<void(Space& home)> c0); /// Constructor for cloning \a p UnaryWait(Space& home, UnaryWait& p); public: /// Perform copying during cloning virtual Actor* copy(Space& home); /// Const function (defined as low unary) virtual PropCost cost(const Space& home, const ModEventDelta& med) const; /// Schedule function virtual void reschedule(Space& home); /// Perform propagation virtual ExecStatus propagate(Space& home, const ModEventDelta& med); /// Post propagator that waits until \a x becomes assigned and then executes \a c static ExecStatus post(Home home, View x, std::function<void(Space& home)> c); /// Delete propagator and return its size virtual size_t dispose(Space& home); };
/** * \brief Wait propagator for several views * * Requires \code #include <gecode/kernel/wait.hh> \endcode * \ingroup FuncKernelProp */ template<class View> class NaryWait : public Propagator { protected: /// Views to wait for becoming assigned ViewArray<View> x; /// Continuation to execute SharedData<std::function<void(Space& home)>> c; /// Constructor for creation NaryWait(Home home, ViewArray<View>& x, std::function<void(Space& home)> c0); /// Constructor for cloning \a p NaryWait(Space& home, NaryWait& p); public: /// Perform copying during cloning virtual Actor* copy(Space& home); /// Const function (defined as high unary) virtual PropCost cost(const Space& home, const ModEventDelta& med) const; /// Schedule function virtual void reschedule(Space& home); /// Perform propagation virtual ExecStatus propagate(Space& home, const ModEventDelta& med); /// Post propagator that waits until \a x becomes assigned and then executes \a c static ExecStatus post(Home home, ViewArray<View>& x, std::function<void(Space& home)> c); /// Delete propagator and return its size virtual size_t dispose(Space& home); };
/* * Wait propagator for single view * */ template<class View> forceinline UnaryWait<View>::UnaryWait(Home home, View x0, std::function<void(Space& home)> c0) : Propagator(home), x(x0), c(c0) { x.subscribe(home,*this,PC_GEN_ASSIGNED); home.notice(*this,AP_DISPOSE); } template<class View> forceinline UnaryWait<View>::UnaryWait(Space& home, UnaryWait& p) : Propagator(home,p), c(p.c) { x.update(home,p.x); } template<class View> Actor* UnaryWait<View>::copy(Space& home) { return new (home) UnaryWait<View>(home,*this); } template<class View> PropCost UnaryWait<View>::cost(const Space&, const ModEventDelta&) const { return PropCost::unary(PropCost::LO); } template<class View> void UnaryWait<View>::reschedule(Space& home) { x.reschedule(home,*this,PC_GEN_ASSIGNED); } template<class View> ExecStatus UnaryWait<View>::propagate(Space& home, const ModEventDelta&) { assert(x.assigned()); GECODE_VALID_FUNCTION(c()); c()(home); return home.failed() ? ES_FAILED : home.ES_SUBSUMED(*this); } template<class View> forceinline ExecStatus UnaryWait<View>::post(Home home, View x, std::function<void(Space& home)> c) { if (!c) throw InvalidFunction("UnaryWait::post"); if (x.assigned()) { c(home); return home.failed() ? ES_FAILED : ES_OK; } else { (void) new (home) UnaryWait<View>(home,x,c); return ES_OK; } } template<class View> size_t UnaryWait<View>::dispose(Space& home) { x.cancel(home,*this,PC_GEN_ASSIGNED); home.ignore(*this,AP_DISPOSE); c.~SharedData<std::function<void(Space& home)>>(); (void) Propagator::dispose(home); return sizeof(*this); }
/* * Wait propagator for several views * */ template<class View> forceinline NaryWait<View>::NaryWait(Home home, ViewArray<View>& x0, std::function<void(Space& home)> c0) : Propagator(home), x(x0), c(c0) { assert(!x[0].assigned()); x[0].subscribe(home,*this,PC_GEN_ASSIGNED); home.notice(*this,AP_DISPOSE); } template<class View> forceinline NaryWait<View>::NaryWait(Space& home, NaryWait& p) : Propagator(home,p), c(p.c) { x.update(home,p.x); } template<class View> Actor* NaryWait<View>::copy(Space& home) { assert(!x[0].assigned()); for (int i=x.size()-1; i>0; i--) if (x[i].assigned()) x.move_lst(i); assert(x.size() > 0); return new (home) NaryWait<View>(home,*this); } template<class View> PropCost NaryWait<View>::cost(const Space&, const ModEventDelta&) const { return PropCost::unary(PropCost::HI); } template<class View> void NaryWait<View>::reschedule(Space& home) { x[0].reschedule(home,*this,PC_GEN_ASSIGNED); } template<class View> ExecStatus NaryWait<View>::propagate(Space& home, const ModEventDelta& ) { assert(x[0].assigned()); for (int i=x.size()-1; i>0; i--) if (x[i].assigned()) x.move_lst(i); assert(x.size() > 0); if (x.size() == 1) { x.size(0); GECODE_VALID_FUNCTION(c()); c()(home); return home.failed() ? ES_FAILED : home.ES_SUBSUMED(*this); } else { // Create new subscription x.move_lst(0); assert(!x[0].assigned()); x[0].subscribe(home,*this,PC_GEN_ASSIGNED,false); return ES_OK; } } template<class View> forceinline ExecStatus NaryWait<View>::post(Home home, ViewArray<View>& x, std::function<void(Space& home)> c) { if (!c) throw InvalidFunction("NaryWait::post"); for (int i=x.size(); i--; ) if (x[i].assigned()) x.move_lst(i); if (x.size() == 0) { c(home); return home.failed() ? ES_FAILED : ES_OK; } else { x.unique(); if (x.size() == 1) { return UnaryWait<View>::post(home,x[0],c); } else { (void) new (home) NaryWait<View>(home,x,c); return ES_OK; } } } template<class View> size_t NaryWait<View>::dispose(Space& home) { if (x.size() > 0) x[0].cancel(home,*this,PC_GEN_ASSIGNED); home.ignore(*this,AP_DISPOSE); c.~SharedData<std::function<void(Space& home)>>(); (void) Propagator::dispose(home); return sizeof(*this); }
}
// STATISTICS: kernel-prop