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      1 // -*- C++ -*-
      2 
      3 // Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
      4 //
      5 // This file is part of the GNU ISO C++ Library.  This library is free
      6 // software; you can redistribute it and/or modify it under the terms
      7 // of the GNU General Public License as published by the Free Software
      8 // Foundation; either version 3, or (at your option) any later
      9 // version.
     10 
     11 // This library is distributed in the hope that it will be useful, but
     12 // WITHOUT ANY WARRANTY; without even the implied warranty of
     13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14 // General Public License for more details.
     15 
     16 // Under Section 7 of GPL version 3, you are granted additional
     17 // permissions described in the GCC Runtime Library Exception, version
     18 // 3.1, as published by the Free Software Foundation.
     19 
     20 // You should have received a copy of the GNU General Public License and
     21 // a copy of the GCC Runtime Library Exception along with this program;
     22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
     23 // <http://www.gnu.org/licenses/>.
     24 
     25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
     26 
     27 // Permission to use, copy, modify, sell, and distribute this software
     28 // is hereby granted without fee, provided that the above copyright
     29 // notice appears in all copies, and that both that copyright notice
     30 // and this permission notice appear in supporting documentation. None
     31 // of the above authors, nor IBM Haifa Research Laboratories, make any
     32 // representation about the suitability of this software for any
     33 // purpose. It is provided "as is" without express or implied
     34 // warranty.
     35 
     36 /**
     37  * @file split_join_fn_imps.hpp
     38  * Contains an implementation for thin_heap_.
     39  */
     40 
     41 PB_DS_CLASS_T_DEC
     42 template<typename Pred>
     43 void
     44 PB_DS_CLASS_C_DEC::
     45 split(Pred pred, PB_DS_CLASS_C_DEC& other)
     46 {
     47   _GLIBCXX_DEBUG_ONLY(assert_valid();)
     48     _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
     49 
     50     other.clear();
     51 
     52   if (base_type::empty())
     53     {
     54       _GLIBCXX_DEBUG_ONLY(assert_valid();)
     55         _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
     56 
     57         return;
     58     }
     59 
     60   base_type::to_linked_list();
     61 
     62   node_pointer p_out = base_type::prune(pred);
     63 
     64   while (p_out != NULL)
     65     {
     66       _GLIBCXX_DEBUG_ASSERT(base_type::m_size > 0);
     67       --base_type::m_size;
     68 
     69       ++other.m_size;
     70 
     71       node_pointer p_next = p_out->m_p_next_sibling;
     72 
     73       other.make_root_and_link(p_out);
     74 
     75       p_out = p_next;
     76     }
     77 
     78   _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
     79 
     80     node_pointer p_cur = base_type::m_p_root;
     81 
     82   m_p_max = NULL;
     83 
     84   base_type::m_p_root = NULL;
     85 
     86   while (p_cur != NULL)
     87     {
     88       node_pointer p_next = p_cur->m_p_next_sibling;
     89 
     90       make_root_and_link(p_cur);
     91 
     92       p_cur = p_next;
     93     }
     94 
     95   _GLIBCXX_DEBUG_ONLY(assert_valid();)
     96     _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
     97     }
     98 
     99 PB_DS_CLASS_T_DEC
    100 inline void
    101 PB_DS_CLASS_C_DEC::
    102 join(PB_DS_CLASS_C_DEC& other)
    103 {
    104   _GLIBCXX_DEBUG_ONLY(assert_valid();)
    105     _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
    106 
    107     node_pointer p_other = other.m_p_root;
    108 
    109   while (p_other != NULL)
    110     {
    111       node_pointer p_next = p_other->m_p_next_sibling;
    112 
    113       make_root_and_link(p_other);
    114 
    115       p_other = p_next;
    116     }
    117 
    118   base_type::m_size += other.m_size;
    119 
    120   other.m_p_root = NULL;
    121   other.m_size = 0;
    122   other.m_p_max = NULL;
    123 
    124   _GLIBCXX_DEBUG_ONLY(assert_valid();)
    125     _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
    126     }
    127