// Iostreams base classes -*- C++ -*-
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// Iostreams base classes -*- C++ -*-
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// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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// 2006, 2007, 2008, 2009, 2010
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// 2006, 2007, 2008, 2009, 2010
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// Free Software Foundation, Inc.
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// Free Software Foundation, Inc.
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//
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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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// 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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// 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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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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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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// 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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// 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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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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// <http://www.gnu.org/licenses/>.
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//
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//
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// ISO C++ 14882: 27.4 Iostreams base classes
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// ISO C++ 14882: 27.4 Iostreams base classes
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//
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//
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#include <ios>
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#include <ios>
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#include <limits>
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#include <limits>
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_GLIBCXX_BEGIN_NAMESPACE(std)
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_GLIBCXX_BEGIN_NAMESPACE(std)
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// Definitions for static const members of ios_base.
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// Definitions for static const members of ios_base.
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const ios_base::fmtflags ios_base::boolalpha;
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const ios_base::fmtflags ios_base::boolalpha;
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const ios_base::fmtflags ios_base::dec;
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const ios_base::fmtflags ios_base::dec;
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const ios_base::fmtflags ios_base::fixed;
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const ios_base::fmtflags ios_base::fixed;
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const ios_base::fmtflags ios_base::hex;
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const ios_base::fmtflags ios_base::hex;
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const ios_base::fmtflags ios_base::internal;
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const ios_base::fmtflags ios_base::internal;
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const ios_base::fmtflags ios_base::left;
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const ios_base::fmtflags ios_base::left;
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const ios_base::fmtflags ios_base::oct;
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const ios_base::fmtflags ios_base::oct;
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const ios_base::fmtflags ios_base::right;
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const ios_base::fmtflags ios_base::right;
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const ios_base::fmtflags ios_base::scientific;
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const ios_base::fmtflags ios_base::scientific;
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const ios_base::fmtflags ios_base::showbase;
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const ios_base::fmtflags ios_base::showbase;
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const ios_base::fmtflags ios_base::showpoint;
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const ios_base::fmtflags ios_base::showpoint;
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const ios_base::fmtflags ios_base::showpos;
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const ios_base::fmtflags ios_base::showpos;
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const ios_base::fmtflags ios_base::skipws;
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const ios_base::fmtflags ios_base::skipws;
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const ios_base::fmtflags ios_base::unitbuf;
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const ios_base::fmtflags ios_base::unitbuf;
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const ios_base::fmtflags ios_base::uppercase;
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const ios_base::fmtflags ios_base::uppercase;
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const ios_base::fmtflags ios_base::adjustfield;
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const ios_base::fmtflags ios_base::adjustfield;
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const ios_base::fmtflags ios_base::basefield;
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const ios_base::fmtflags ios_base::basefield;
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const ios_base::fmtflags ios_base::floatfield;
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const ios_base::fmtflags ios_base::floatfield;
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const ios_base::iostate ios_base::badbit;
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const ios_base::iostate ios_base::badbit;
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const ios_base::iostate ios_base::eofbit;
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const ios_base::iostate ios_base::eofbit;
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const ios_base::iostate ios_base::failbit;
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const ios_base::iostate ios_base::failbit;
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const ios_base::iostate ios_base::goodbit;
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const ios_base::iostate ios_base::goodbit;
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const ios_base::openmode ios_base::app;
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const ios_base::openmode ios_base::app;
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const ios_base::openmode ios_base::ate;
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const ios_base::openmode ios_base::ate;
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const ios_base::openmode ios_base::binary;
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const ios_base::openmode ios_base::binary;
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const ios_base::openmode ios_base::in;
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const ios_base::openmode ios_base::in;
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const ios_base::openmode ios_base::out;
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const ios_base::openmode ios_base::out;
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const ios_base::openmode ios_base::trunc;
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const ios_base::openmode ios_base::trunc;
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const ios_base::seekdir ios_base::beg;
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const ios_base::seekdir ios_base::beg;
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const ios_base::seekdir ios_base::cur;
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const ios_base::seekdir ios_base::cur;
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const ios_base::seekdir ios_base::end;
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const ios_base::seekdir ios_base::end;
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_Atomic_word ios_base::Init::_S_refcount;
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_Atomic_word ios_base::Init::_S_refcount;
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bool ios_base::Init::_S_synced_with_stdio = true;
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bool ios_base::Init::_S_synced_with_stdio = true;
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ios_base::ios_base() throw()
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ios_base::ios_base() throw()
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: _M_precision(), _M_width(), _M_flags(), _M_exception(),
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: _M_precision(), _M_width(), _M_flags(), _M_exception(),
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_M_streambuf_state(), _M_callbacks(0), _M_word_zero(),
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_M_streambuf_state(), _M_callbacks(0), _M_word_zero(),
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_M_word_size(_S_local_word_size), _M_word(_M_local_word), _M_ios_locale()
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_M_word_size(_S_local_word_size), _M_word(_M_local_word), _M_ios_locale()
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{
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{
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// Do nothing: basic_ios::init() does it.
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// Do nothing: basic_ios::init() does it.
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// NB: _M_callbacks and _M_word must be zero for non-initialized
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// NB: _M_callbacks and _M_word must be zero for non-initialized
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// ios_base to go through ~ios_base gracefully.
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// ios_base to go through ~ios_base gracefully.
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}
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}
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// 27.4.2.7 ios_base constructors/destructors
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// 27.4.2.7 ios_base constructors/destructors
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ios_base::~ios_base()
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ios_base::~ios_base()
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{
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{
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_M_call_callbacks(erase_event);
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_M_call_callbacks(erase_event);
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_M_dispose_callbacks();
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_M_dispose_callbacks();
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if (_M_word != _M_local_word)
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if (_M_word != _M_local_word)
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{
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{
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delete [] _M_word;
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delete [] _M_word;
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_M_word = 0;
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_M_word = 0;
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}
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}
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}
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}
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// 27.4.2.5 ios_base storage functions
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// 27.4.2.5 ios_base storage functions
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int
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int
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ios_base::xalloc() throw()
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ios_base::xalloc() throw()
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{
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{
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// Implementation note: Initialize top to zero to ensure that
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// Implementation note: Initialize top to zero to ensure that
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// initialization occurs before main() is started.
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// initialization occurs before main() is started.
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static _Atomic_word _S_top = 0;
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static _Atomic_word _S_top = 0;
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return __gnu_cxx::__exchange_and_add_dispatch(&_S_top, 1) + 4;
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return __gnu_cxx::__exchange_and_add_dispatch(&_S_top, 1) + 4;
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}
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}
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void
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void
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ios_base::register_callback(event_callback __fn, int __index)
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ios_base::register_callback(event_callback __fn, int __index)
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{ _M_callbacks = new _Callback_list(__fn, __index, _M_callbacks); }
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{ _M_callbacks = new _Callback_list(__fn, __index, _M_callbacks); }
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// 27.4.2.5 iword/pword storage
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// 27.4.2.5 iword/pword storage
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ios_base::_Words&
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ios_base::_Words&
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ios_base::_M_grow_words(int __ix, bool __iword)
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ios_base::_M_grow_words(int __ix, bool __iword)
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{
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{
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// Precondition: _M_word_size <= __ix
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// Precondition: _M_word_size <= __ix
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int __newsize = _S_local_word_size;
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int __newsize = _S_local_word_size;
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_Words* __words = _M_local_word;
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_Words* __words = _M_local_word;
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if (__ix > _S_local_word_size - 1)
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if (__ix > _S_local_word_size - 1)
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{
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{
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if (__ix < numeric_limits<int>::max())
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if (__ix < numeric_limits<int>::max())
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{
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{
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__newsize = __ix + 1;
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__newsize = __ix + 1;
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__try
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__try
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{ __words = new _Words[__newsize]; }
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{ __words = new _Words[__newsize]; }
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__catch(const std::bad_alloc&)
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__catch(const std::bad_alloc&)
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{
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{
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_M_streambuf_state |= badbit;
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_M_streambuf_state |= badbit;
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if (_M_streambuf_state & _M_exception)
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if (_M_streambuf_state & _M_exception)
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__throw_ios_failure(__N("ios_base::_M_grow_words "
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__throw_ios_failure(__N("ios_base::_M_grow_words "
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"allocation failed"));
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"allocation failed"));
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if (__iword)
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if (__iword)
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_M_word_zero._M_iword = 0;
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_M_word_zero._M_iword = 0;
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else
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else
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_M_word_zero._M_pword = 0;
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_M_word_zero._M_pword = 0;
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return _M_word_zero;
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return _M_word_zero;
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}
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}
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for (int __i = 0; __i < _M_word_size; __i++)
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for (int __i = 0; __i < _M_word_size; __i++)
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__words[__i] = _M_word[__i];
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__words[__i] = _M_word[__i];
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if (_M_word && _M_word != _M_local_word)
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if (_M_word && _M_word != _M_local_word)
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{
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{
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delete [] _M_word;
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delete [] _M_word;
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_M_word = 0;
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_M_word = 0;
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}
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}
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}
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}
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else
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else
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{
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{
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_M_streambuf_state |= badbit;
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_M_streambuf_state |= badbit;
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if (_M_streambuf_state & _M_exception)
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if (_M_streambuf_state & _M_exception)
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__throw_ios_failure(__N("ios_base::_M_grow_words is not valid"));
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__throw_ios_failure(__N("ios_base::_M_grow_words is not valid"));
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if (__iword)
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if (__iword)
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_M_word_zero._M_iword = 0;
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_M_word_zero._M_iword = 0;
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else
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else
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_M_word_zero._M_pword = 0;
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_M_word_zero._M_pword = 0;
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return _M_word_zero;
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return _M_word_zero;
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}
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}
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}
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}
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_M_word = __words;
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_M_word = __words;
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_M_word_size = __newsize;
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_M_word_size = __newsize;
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return _M_word[__ix];
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return _M_word[__ix];
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}
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}
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void
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void
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ios_base::_M_call_callbacks(event __e) throw()
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ios_base::_M_call_callbacks(event __e) throw()
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{
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{
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_Callback_list* __p = _M_callbacks;
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_Callback_list* __p = _M_callbacks;
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while (__p)
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while (__p)
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{
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{
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__try
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__try
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{ (*__p->_M_fn) (__e, *this, __p->_M_index); }
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{ (*__p->_M_fn) (__e, *this, __p->_M_index); }
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__catch(...)
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__catch(...)
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{ }
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{ }
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__p = __p->_M_next;
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__p = __p->_M_next;
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}
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}
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}
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}
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void
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void
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ios_base::_M_dispose_callbacks(void) throw()
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ios_base::_M_dispose_callbacks(void) throw()
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{
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{
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_Callback_list* __p = _M_callbacks;
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_Callback_list* __p = _M_callbacks;
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while (__p && __p->_M_remove_reference() == 0)
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while (__p && __p->_M_remove_reference() == 0)
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{
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{
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_Callback_list* __next = __p->_M_next;
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_Callback_list* __next = __p->_M_next;
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delete __p;
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delete __p;
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__p = __next;
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__p = __next;
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}
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}
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_M_callbacks = 0;
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_M_callbacks = 0;
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}
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}
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_GLIBCXX_END_NAMESPACE
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_GLIBCXX_END_NAMESPACE
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