/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2004
 *
 *  Last modified:
 *     $Date: 2006-08-04 16:03:17 +0200 (Fri, 04 Aug 2006) $ by $Author: schulte $
 *     $Revision: 3511 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
 *
 *  See the file "LICENSE" for information on usage and
 *  redistribution of this file, and for a
 *     DISCLAIMER OF ALL WARRANTIES.
 *
 */

namespace Gecode { namespace Search {

  forceinline
  EngineCtrl::EngineCtrl(Stop* st0, size_t sz)
    : st(st0), _stopped(false), mem_space(sz), mem_cur(0), mem_total(0) {
    memory = 0;
  }

  forceinline void
  EngineCtrl::start(void) {
    _stopped = false;
  }

  forceinline bool
  EngineCtrl::stop(size_t sz) {
    if (st == NULL)
      return false;
    memory += sz;
    _stopped |= st->stop(*this);
    memory -= sz;
    return _stopped;
  }

  forceinline bool
  EngineCtrl::stopped(void) const {
    return _stopped;
  }

  forceinline void
  EngineCtrl::push(const Space* s, const BranchingDesc* d) {
    if (s != NULL)
      mem_total += mem_space + s->allocated();
    mem_total += d->size();
    if (mem_total > memory)
      memory = mem_total;
  }

  forceinline void
  EngineCtrl::adapt(const Space* s) {
    mem_total += mem_space + s->allocated();
    if (mem_total > memory)
      memory = mem_total;
  }

  forceinline void
  EngineCtrl::constrained(const Space* s1, const Space* s2) {
    mem_total -= s1->allocated();
    mem_total += s2->allocated();
    if (mem_total > memory)
      memory = mem_total;
  }

  forceinline void
  EngineCtrl::lao(const Space* s) {
    mem_total -= mem_space + s->allocated();
  }

  forceinline void
  EngineCtrl::pop(const Space* s, const BranchingDesc* d) {
    if (s != NULL)
      mem_total -= mem_space + s->allocated();
    mem_total -= d->size();
  }

  forceinline void
  EngineCtrl::current(const Space* s) {
    if (s == NULL) {
      mem_total -= mem_cur;
      mem_cur = 0;
    } else {
      mem_cur = mem_space + s->allocated() + s->cached();
      mem_total += mem_cur;
      if (mem_total > memory)
	memory = mem_total;
    }
  }

  forceinline void
  EngineCtrl::reset(const Space* s) {
    mem_cur   = mem_space+s->allocated()+s->cached();
    mem_total = mem_cur;
    if (mem_total > memory)
      memory = mem_total;
  }

}}

// STATISTICS: search-any