config.hpp

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Bugfixes provided by:
 *     Zandra Norman
 *
 *  Copyright:
 *     Christian Schulte, 2008
 *
 *  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 { namespace Kernel {

  namespace MemoryConfig {
    const unsigned int n_hc_cache = 4*4;

    const size_t hcsz_min =  1024;
    const size_t hcsz_max = 32 * 1024;
    const int hcsz_inc_ratio = 8;
    const int hcsz_dec_ratio = 8;

    const int fl_unit_size = ((sizeof(void*) == 4) ? 2 : 3);
    const int fl_size_min  = ((sizeof(void*) == 4) ? 2 : 2);
    const int fl_size_max  = ((sizeof(void*) == 4) ? 3 : 3);
    const int fl_refill = 8;
#ifndef GECODE_MEMORY_ALIGNMENT
#define GECODE_MEMORY_ALIGNMENT static_cast<size_t>(8U)
#endif

    const size_t region_area_size = 32 * 1024;

    void align(size_t& s, size_t a = GECODE_MEMORY_ALIGNMENT);

    /*
     * Alignment
     *
     */
    forceinline void
    align(size_t& s, size_t a) {
      s += ((a - (s & (a - 1))) & (a - 1));
    }

  }

}}

// STATISTICS: kernel-memory