]> oss.titaniummirror.com Git - msp430-gcc.git/blobdiff - libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/split_join_fn_imps.hpp
Imported gcc-4.4.3
[msp430-gcc.git] / libstdc++-v3 / include / ext / pb_ds / detail / binary_heap_ / split_join_fn_imps.hpp
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/split_join_fn_imps.hpp b/libstdc++-v3/include/ext/pb_ds/detail/binary_heap_/split_join_fn_imps.hpp
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+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software
+// Foundation; either version 3, or (at your option) any later
+// version.
+
+// This library is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
+
+// Permission to use, copy, modify, sell, and distribute this software
+// is hereby granted without fee, provided that the above copyright
+// notice appears in all copies, and that both that copyright notice
+// and this permission notice appear in supporting documentation. None
+// of the above authors, nor IBM Haifa Research Laboratories, make any
+// representation about the suitability of this software for any
+// purpose. It is provided "as is" without express or implied
+// warranty.
+
+/**
+ * @file split_join_fn_imps.hpp
+ * Contains an implementation class for a binary_heap.
+ */
+
+PB_DS_CLASS_T_DEC
+template<typename Pred>
+void
+PB_DS_CLASS_C_DEC::
+split(Pred pred, PB_DS_CLASS_C_DEC& other)
+{
+  _GLIBCXX_DEBUG_ONLY(assert_valid();)
+
+    typedef
+    typename entry_pred<
+    value_type,
+    Pred,
+    simple_value,
+    Allocator>::type
+    pred_t;
+
+  const size_type left = partition(pred_t(pred));
+
+  _GLIBCXX_DEBUG_ASSERT(m_size >= left);
+
+  const size_type ersd = m_size - left;
+
+  _GLIBCXX_DEBUG_ASSERT(m_size >= ersd);
+
+  const size_type actual_size =
+    resize_policy::get_new_size_for_arbitrary(left);
+
+  const size_type other_actual_size =
+    other.get_new_size_for_arbitrary(ersd);
+
+  entry_pointer a_entries = NULL;
+  entry_pointer a_other_entries = NULL;
+
+  __try
+    {
+      a_entries = s_entry_allocator.allocate(actual_size);
+
+      a_other_entries = s_entry_allocator.allocate(other_actual_size);
+    }
+  __catch(...)
+    {
+      if (a_entries != NULL)
+       s_entry_allocator.deallocate(a_entries, actual_size);
+
+      if (a_other_entries != NULL)
+       s_entry_allocator.deallocate(a_other_entries, other_actual_size);
+
+      __throw_exception_again;
+    };
+
+  for (size_type i = 0; i < other.m_size; ++i)
+    erase_at(other.m_a_entries, i, s_no_throw_copies_ind);
+
+  _GLIBCXX_DEBUG_ASSERT(actual_size >= left);
+  std::copy(m_a_entries, m_a_entries + left, a_entries);
+  std::copy(m_a_entries + left, m_a_entries + m_size, a_other_entries);
+
+  s_entry_allocator.deallocate(m_a_entries, m_actual_size);
+  s_entry_allocator.deallocate(other.m_a_entries, other.m_actual_size);
+
+  m_actual_size = actual_size;
+  other.m_actual_size = other_actual_size;
+
+  m_size = left;
+  other.m_size = ersd;
+
+  m_a_entries = a_entries;
+  other.m_a_entries = a_other_entries;
+
+  std::make_heap(m_a_entries, m_a_entries + m_size, static_cast<entry_cmp& >(*this));
+  std::make_heap(other.m_a_entries, other.m_a_entries + other.m_size, static_cast<entry_cmp& >(other));
+
+  resize_policy::notify_arbitrary(m_actual_size);
+  other.notify_arbitrary(other.m_actual_size);
+
+  _GLIBCXX_DEBUG_ONLY(assert_valid();)
+    _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
+    }
+
+PB_DS_CLASS_T_DEC
+inline void
+PB_DS_CLASS_C_DEC::
+join(PB_DS_CLASS_C_DEC& other)
+{
+  _GLIBCXX_DEBUG_ONLY(assert_valid();)
+  _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
+
+  const size_type len = m_size + other.m_size;
+  const size_type actual_size = resize_policy::get_new_size_for_arbitrary(len);
+
+  entry_pointer a_entries = NULL;
+  entry_pointer a_other_entries = NULL;
+
+  __try
+    {
+      a_entries = s_entry_allocator.allocate(actual_size);
+      a_other_entries = s_entry_allocator.allocate(resize_policy::min_size);
+    }
+  __catch(...)
+    {
+      if (a_entries != NULL)
+       s_entry_allocator.deallocate(a_entries, actual_size);
+
+      if (a_other_entries != NULL)
+       s_entry_allocator.deallocate(a_other_entries, resize_policy::min_size);
+
+      __throw_exception_again;
+    }
+
+  std::copy(m_a_entries, m_a_entries + m_size, a_entries);
+  std::copy(other.m_a_entries, other.m_a_entries + other.m_size, a_entries + m_size);
+
+  s_entry_allocator.deallocate(m_a_entries, m_actual_size);
+  m_a_entries = a_entries;
+  m_size = len;
+  m_actual_size = actual_size;
+
+  resize_policy::notify_arbitrary(actual_size);
+
+  std::make_heap(m_a_entries, m_a_entries + m_size, static_cast<entry_cmp& >(*this));
+
+  s_entry_allocator.deallocate(other.m_a_entries, other.m_actual_size);
+  other.m_a_entries = a_other_entries;
+  other.m_size = 0;
+  other.m_actual_size = resize_policy::min_size;
+
+  other.notify_arbitrary(resize_policy::min_size);
+
+  _GLIBCXX_DEBUG_ONLY(assert_valid();)
+  _GLIBCXX_DEBUG_ONLY(other.assert_valid();)
+}
+