mirror of
git://gcc.gnu.org/git/gcc.git
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af5fb6ab3b
2002-11-15 Benjamin Kosnik <bkoz@redhat.com>
Gabriel Dos Reis <gdr@integrable-solutions.net>
PR libstdc++/8230
* include/bits/stl_alloc.h: Use builtin_expect for the most
obvious limit checks.
(__default_alloc_template::allocate): Check for null, throw
bad_alloc.
* include/bits/vector.tcc: Formatting tweaks.
* include/bits/stl_vector.h: Same.
* testsuite/20_util/allocator_members.cc (test02): Add.
* testsuite/23_containers/vector_capacity.cc (test03): Add.
Co-Authored-By: Gabriel Dos Reis <gdr@integrable-solutions.net>
From-SVN: r59169
438 lines
14 KiB
C++
438 lines
14 KiB
C++
// Vector implementation (out of line) -*- C++ -*-
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// Copyright (C) 2001, 2002 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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/*
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*
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* Copyright (c) 1994
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* Hewlett-Packard Company
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Hewlett-Packard Company makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*
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*
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* Copyright (c) 1996
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* Silicon Graphics Computer Systems, Inc.
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*
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* Permission to use, copy, modify, distribute and sell this software
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* and its documentation for any purpose is hereby granted without fee,
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* provided that the above copyright notice appear in all copies and
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* that both that copyright notice and this permission notice appear
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* in supporting documentation. Silicon Graphics makes no
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* representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied warranty.
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*/
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/** @file vector.tcc
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* This is an internal header file, included by other library headers.
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* You should not attempt to use it directly.
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*/
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#ifndef __GLIBCPP_INTERNAL_VECTOR_TCC
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#define __GLIBCPP_INTERNAL_VECTOR_TCC
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namespace std
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{
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template<typename _Tp, typename _Alloc>
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void
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vector<_Tp,_Alloc>::
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reserve(size_type __n)
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{
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if (__n > this->max_size())
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__throw_length_error("vector::reserve");
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if (this->capacity() < __n)
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{
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const size_type __old_size = size();
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pointer __tmp = _M_allocate_and_copy(__n, _M_start, _M_finish);
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_Destroy(_M_start, _M_finish);
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_M_deallocate(_M_start, _M_end_of_storage - _M_start);
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_M_start = __tmp;
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_M_finish = __tmp + __old_size;
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_M_end_of_storage = _M_start + __n;
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}
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}
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template<typename _Tp, typename _Alloc>
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typename vector<_Tp,_Alloc>::iterator
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vector<_Tp,_Alloc>::
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insert(iterator __position, const value_type& __x)
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{
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size_type __n = __position - begin();
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if (_M_finish != _M_end_of_storage && __position == end())
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{
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_Construct(_M_finish, __x);
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++_M_finish;
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}
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else
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_M_insert_aux(__position, __x);
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return begin() + __n;
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}
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template<typename _Tp, typename _Alloc>
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typename vector<_Tp,_Alloc>::iterator
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vector<_Tp,_Alloc>::
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erase(iterator __position)
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{
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if (__position + 1 != end())
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copy(__position + 1, end(), __position);
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--_M_finish;
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_Destroy(_M_finish);
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return __position;
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}
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template<typename _Tp, typename _Alloc>
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typename vector<_Tp,_Alloc>::iterator
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vector<_Tp,_Alloc>::
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erase(iterator __first, iterator __last)
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{
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iterator __i(copy(__last, end(), __first));
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_Destroy(__i, end());
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_M_finish = _M_finish - (__last - __first);
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return __first;
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}
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template<typename _Tp, typename _Alloc>
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vector<_Tp,_Alloc>&
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vector<_Tp,_Alloc>::
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operator=(const vector<_Tp,_Alloc>& __x)
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{
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if (&__x != this)
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{
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const size_type __xlen = __x.size();
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if (__xlen > capacity())
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{
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pointer __tmp = _M_allocate_and_copy(__xlen, __x.begin(), __x.end());
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_Destroy(_M_start, _M_finish);
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_M_deallocate(_M_start, _M_end_of_storage - _M_start);
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_M_start = __tmp;
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_M_end_of_storage = _M_start + __xlen;
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}
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else if (size() >= __xlen)
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{
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iterator __i(copy(__x.begin(), __x.end(), begin()));
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_Destroy(__i, end());
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}
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else
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{
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copy(__x.begin(), __x.begin() + size(), _M_start);
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uninitialized_copy(__x.begin() + size(), __x.end(), _M_finish);
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}
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_M_finish = _M_start + __xlen;
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}
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return *this;
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}
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template<typename _Tp, typename _Alloc>
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void
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vector<_Tp,_Alloc>::
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_M_fill_assign(size_t __n, const value_type& __val)
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{
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if (__n > capacity())
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{
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vector __tmp(__n, __val, get_allocator());
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__tmp.swap(*this);
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}
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else if (__n > size())
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{
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fill(begin(), end(), __val);
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_M_finish = uninitialized_fill_n(_M_finish, __n - size(), __val);
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}
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else
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erase(fill_n(begin(), __n, __val), end());
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}
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template<typename _Tp, typename _Alloc> template<typename _InputIter>
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void
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vector<_Tp,_Alloc>::
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_M_assign_aux(_InputIter __first, _InputIter __last, input_iterator_tag)
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{
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iterator __cur(begin());
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for ( ; __first != __last && __cur != end(); ++__cur, ++__first)
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*__cur = *__first;
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if (__first == __last)
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erase(__cur, end());
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else
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insert(end(), __first, __last);
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}
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template<typename _Tp, typename _Alloc> template<typename _ForwardIter>
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void
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vector<_Tp,_Alloc>::
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_M_assign_aux(_ForwardIter __first, _ForwardIter __last,
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forward_iterator_tag)
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{
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size_type __len = distance(__first, __last);
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if (__len > capacity())
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{
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pointer __tmp(_M_allocate_and_copy(__len, __first, __last));
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_Destroy(_M_start, _M_finish);
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_M_deallocate(_M_start, _M_end_of_storage - _M_start);
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_M_start = __tmp;
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_M_end_of_storage = _M_finish = _M_start + __len;
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}
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else if (size() >= __len)
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{
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iterator __new_finish(copy(__first, __last, _M_start));
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_Destroy(__new_finish, end());
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_M_finish = __new_finish.base();
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}
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else
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{
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_ForwardIter __mid = __first;
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advance(__mid, size());
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copy(__first, __mid, _M_start);
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_M_finish = uninitialized_copy(__mid, __last, _M_finish);
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}
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}
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template<typename _Tp, typename _Alloc>
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void
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vector<_Tp,_Alloc>::
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_M_insert_aux(iterator __position, const _Tp& __x)
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{
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if (_M_finish != _M_end_of_storage)
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{
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_Construct(_M_finish, *(_M_finish - 1));
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++_M_finish;
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_Tp __x_copy = __x;
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copy_backward(__position, iterator(_M_finish-2), iterator(_M_finish-1));
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*__position = __x_copy;
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}
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else
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{
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const size_type __old_size = size();
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const size_type __len = __old_size != 0 ? 2 * __old_size : 1;
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iterator __new_start(_M_allocate(__len));
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iterator __new_finish(__new_start);
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try
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{
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__new_finish = uninitialized_copy(iterator(_M_start), __position,
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__new_start);
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_Construct(__new_finish.base(), __x);
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++__new_finish;
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__new_finish = uninitialized_copy(__position, iterator(_M_finish),
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__new_finish);
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}
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catch(...)
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{
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_Destroy(__new_start,__new_finish);
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_M_deallocate(__new_start.base(),__len);
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__throw_exception_again;
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}
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_Destroy(begin(), end());
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_M_deallocate(_M_start, _M_end_of_storage - _M_start);
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_M_start = __new_start.base();
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_M_finish = __new_finish.base();
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_M_end_of_storage = __new_start.base() + __len;
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}
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}
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#ifdef _GLIBCPP_DEPRECATED
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template<typename _Tp, typename _Alloc>
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void
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vector<_Tp,_Alloc>::
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_M_insert_aux(iterator __position)
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{
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if (_M_finish != _M_end_of_storage)
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{
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_Construct(_M_finish, *(_M_finish - 1));
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++_M_finish;
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copy_backward(__position, iterator(_M_finish - 2),
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iterator(_M_finish - 1));
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*__position = value_type();
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}
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else
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{
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const size_type __old_size = size();
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const size_type __len = __old_size != 0 ? 2 * __old_size : 1;
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pointer __new_start = _M_allocate(__len);
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pointer __new_finish = __new_start;
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try
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{
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__new_finish = uninitialized_copy(iterator(_M_start), __position,
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__new_start);
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_Construct(__new_finish);
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++__new_finish;
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__new_finish = uninitialized_copy(__position, iterator(_M_finish),
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__new_finish);
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}
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catch(...)
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{
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_Destroy(__new_start,__new_finish);
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_M_deallocate(__new_start,__len);
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__throw_exception_again;
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}
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_Destroy(begin(), end());
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_M_deallocate(_M_start, _M_end_of_storage - _M_start);
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_M_start = __new_start;
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_M_finish = __new_finish;
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_M_end_of_storage = __new_start + __len;
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}
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}
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#endif
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template<typename _Tp, typename _Alloc>
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void
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vector<_Tp,_Alloc>::
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_M_fill_insert(iterator __position, size_type __n, const value_type& __x)
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{
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if (__n != 0)
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{
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if (size_type(_M_end_of_storage - _M_finish) >= __n)
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{
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value_type __x_copy = __x;
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const size_type __elems_after = end() - __position;
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iterator __old_finish(_M_finish);
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if (__elems_after > __n)
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{
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uninitialized_copy(_M_finish - __n, _M_finish, _M_finish);
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_M_finish += __n;
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copy_backward(__position, __old_finish - __n, __old_finish);
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fill(__position, __position + __n, __x_copy);
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}
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else
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{
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uninitialized_fill_n(_M_finish, __n - __elems_after, __x_copy);
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_M_finish += __n - __elems_after;
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uninitialized_copy(__position, __old_finish, _M_finish);
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_M_finish += __elems_after;
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fill(__position, __old_finish, __x_copy);
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}
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}
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else
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{
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const size_type __old_size = size();
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const size_type __len = __old_size + max(__old_size, __n);
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iterator __new_start(_M_allocate(__len));
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iterator __new_finish(__new_start);
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try
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{
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__new_finish = uninitialized_copy(begin(), __position,
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__new_start);
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__new_finish = uninitialized_fill_n(__new_finish, __n, __x);
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__new_finish = uninitialized_copy(__position, end(),
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__new_finish);
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}
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catch(...)
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{
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_Destroy(__new_start,__new_finish);
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_M_deallocate(__new_start.base(),__len);
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__throw_exception_again;
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}
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_Destroy(_M_start, _M_finish);
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_M_deallocate(_M_start, _M_end_of_storage - _M_start);
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_M_start = __new_start.base();
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_M_finish = __new_finish.base();
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_M_end_of_storage = __new_start.base() + __len;
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}
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}
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}
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template<typename _Tp, typename _Alloc> template<typename _InputIterator>
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void
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vector<_Tp,_Alloc>::
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_M_range_insert(iterator __pos,
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_InputIterator __first, _InputIterator __last,
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input_iterator_tag)
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{
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for ( ; __first != __last; ++__first)
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{
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__pos = insert(__pos, *__first);
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++__pos;
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}
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}
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template<typename _Tp, typename _Alloc> template<typename _ForwardIterator>
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void
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vector<_Tp,_Alloc>::
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_M_range_insert(iterator __position,_ForwardIterator __first,
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_ForwardIterator __last, forward_iterator_tag)
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{
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if (__first != __last)
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{
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size_type __n = distance(__first, __last);
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if (size_type(_M_end_of_storage - _M_finish) >= __n)
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{
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const size_type __elems_after = end() - __position;
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iterator __old_finish(_M_finish);
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if (__elems_after > __n)
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{
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uninitialized_copy(_M_finish - __n, _M_finish, _M_finish);
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_M_finish += __n;
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copy_backward(__position, __old_finish - __n, __old_finish);
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copy(__first, __last, __position);
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}
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else
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{
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_ForwardIterator __mid = __first;
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advance(__mid, __elems_after);
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uninitialized_copy(__mid, __last, _M_finish);
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_M_finish += __n - __elems_after;
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uninitialized_copy(__position, __old_finish, _M_finish);
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_M_finish += __elems_after;
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copy(__first, __mid, __position);
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}
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}
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else
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{
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const size_type __old_size = size();
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const size_type __len = __old_size + max(__old_size, __n);
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iterator __new_start(_M_allocate(__len));
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iterator __new_finish(__new_start);
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try
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{
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__new_finish = uninitialized_copy(iterator(_M_start),
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__position, __new_start);
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__new_finish = uninitialized_copy(__first, __last, __new_finish);
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__new_finish = uninitialized_copy(__position, iterator(_M_finish),
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__new_finish);
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}
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catch(...)
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{
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_Destroy(__new_start,__new_finish);
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_M_deallocate(__new_start.base(), __len);
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__throw_exception_again;
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}
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_Destroy(_M_start, _M_finish);
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_M_deallocate(_M_start, _M_end_of_storage - _M_start);
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_M_start = __new_start.base();
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_M_finish = __new_finish.base();
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_M_end_of_storage = __new_start.base() + __len;
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}
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}
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}
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} // namespace std
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#endif /* __GLIBCPP_INTERNAL_VECTOR_TCC */
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