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105 lines
3.5 KiB
105 lines
3.5 KiB
5 years ago
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/***************************************************************************
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*
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* ios.cc - Definition for the Standard Library iostreams
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*
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* $Id: ios.cc 172106 2011-11-02 17:04:12Z statham $
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*
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***************************************************************************
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*
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* Copyright (c) 1994-2001 Rogue Wave Software, Inc. All Rights Reserved.
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*
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* This computer software is owned by Rogue Wave Software, Inc. and is
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* protected by U.S. copyright laws and other laws and by international
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* treaties. This computer software is furnished by Rogue Wave Software,
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* Inc. pursuant to a written license agreement and may be used, copied,
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* transmitted, and stored only in accordance with the terms of such
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* license and with the inclusion of the above copyright notice. This
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* computer software or any other copies thereof may not be provided or
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* otherwise made available to any other person.
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*
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* U.S. Government Restricted Rights. This computer software is provided
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* with Restricted Rights. Use, duplication, or disclosure by the
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* Government is subject to restrictions as set forth in subparagraph (c)
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* (1) (ii) of The Rights in Technical Data and Computer Software clause
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* at DFARS 252.227-7013 or subparagraphs (c) (1) and (2) of the
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* Commercial Computer Software--Restricted Rights at 48 CFR 52.227-19,
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* as applicable. Manufacturer is Rogue Wave Software, Inc., 5500
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* Flatiron Parkway, Boulder, Colorado 80301 USA.
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*
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**************************************************************************/
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_RWSTD_NAMESPACE_BEGIN (std)
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template<class _CharT, class _Traits>
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basic_ios<_CharT, _Traits>&
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basic_ios<_CharT, _Traits>::copyfmt (const basic_ios &__rhs)
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{
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if (this == &__rhs)
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return *this;
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// may lock, fires erase events (27.4.4.2, p17), never unlocks
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_C_copyfmt (__rhs);
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// may still be locked, just establish a guard
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_RW::__rw_guard __guard (0);
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if (!(flags () & _RWSTD_IOS_NOLOCK))
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__guard._C_set (&_C_mutex);
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_C_tiestrm = __rhs._C_tiestrm;
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_C_fillch = __rhs._C_fillch;
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_TRY {
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// fire copy events (27.4.4.2, p17), may temporarily unlock or throw
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_C_fire_event (copyfmt_event, true /* reentrant */);
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// assign exceptions last (27.4.4.2, p15, bullet 2)
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_C_except = __rhs._C_except;
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}
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_CATCH (...) {
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// must still assign exceptions
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_C_except = __rhs._C_except;
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// just rethrow caught exception (don't call clear())
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_RETHROW;
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}
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// leave state alone but throw an exception if necessary
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_C_unsafe_clear (rdstate ());
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return *this;
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}
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template<class _CharT, class _Traits>
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void basic_ios<_CharT, _Traits>::init (streambuf_type *__sb)
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{
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_RWSTD_MT_GUARD (flags () & _RWSTD_IOS_NOLOCK ? 0 : &_C_mutex);
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// NOTE: `sb' may point to a yet uninitialized object
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// it is unsafe to reference any of its members
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_C_state = 0 != (_C_strmbuf = __sb) ? goodbit : badbit;
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_C_tiestrm = 0;
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_C_except = goodbit;
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_C_fmtfl = skipws | dec;
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_C_wide = 0;
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_C_prec = 6;
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_C_fillch = widen (' ');
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#if defined (_RWSTD_MULTI_THREAD) \
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&& !defined (_RWSTD_NO_EXT_REENTRANT_IO) \
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&& !defined (_RWSTD_NO_REENTRANT_IO_DEFAULT)
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// disable locking of iostream objects and their associated buffers
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// standard iostream objects will override in ios_base::Init::Init()
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_C_fmtfl |= _RWSTD_IOS_NOLOCK | _RWSTD_IOS_NOLOCKBUF;
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#endif // _RWSTD_MULTI_THREAD && !_RWSTD_NO_REENTRANT_IO && ...
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}
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_RWSTD_NAMESPACE_END // std
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