author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 14 Apr 2010 17:44:02 +0300 | |
branch | RCL_3 |
changeset 17 | ef2ebc87518f |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
0
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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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* Copyright (c) 1996,1997 |
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* Silicon Graphics Computer Systems, Inc. |
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* |
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* Copyright (c) 1997 |
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* Moscow Center for SPARC Technology |
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* |
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* Copyright (c) 1999 |
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* Boris Fomitchev |
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* |
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* This material is provided "as is", with absolutely no warranty expressed |
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* or implied. Any use is at your own risk. |
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* |
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* Permission to use or copy this software for any purpose is hereby granted |
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* without fee, provided the above notices are retained on all copies. |
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* Permission to modify the code and to distribute modified code is granted, |
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* provided the above notices are retained, and a notice that the code was |
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* modified is included with the above copyright notice. |
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* |
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*/ |
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|
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/* NOTE: This is an internal header file, included by other STL headers. |
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* You should not attempt to use it directly. |
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*/ |
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|
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#ifndef _STLP_INTERNAL_TEMPBUF_H |
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#define _STLP_INTERNAL_TEMPBUF_H |
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#ifndef _STLP_CLIMITS |
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# include <climits> |
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#endif |
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#ifndef _STLP_INTERNAL_CSTDLIB |
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# include <stl/_cstdlib.h> |
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#endif |
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#ifndef _STLP_INTERNAL_UNINITIALIZED_H |
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# include <stl/_uninitialized.h> |
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#endif |
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_STLP_BEGIN_NAMESPACE |
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template <class _Tp> |
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pair<_Tp*, ptrdiff_t> _STLP_CALL |
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__get_temporary_buffer(ptrdiff_t __len, _Tp*); |
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#ifndef _STLP_NO_EXPLICIT_FUNCTION_TMPL_ARGS |
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template <class _Tp> |
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inline pair<_Tp*, ptrdiff_t> _STLP_CALL get_temporary_buffer(ptrdiff_t __len) { |
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return __get_temporary_buffer(__len, (_Tp*) 0); |
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} |
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|
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# if ! defined(_STLP_NO_EXTENSIONS) |
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// This overload is not required by the standard; it is an extension. |
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// It is supported for backward compatibility with the HP STL, and |
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// because not all compilers support the language feature (explicit |
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// function template arguments) that is required for the standard |
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// version of get_temporary_buffer. |
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template <class _Tp> |
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inline pair<_Tp*, ptrdiff_t> _STLP_CALL |
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get_temporary_buffer(ptrdiff_t __len, _Tp*) { |
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return __get_temporary_buffer(__len, (_Tp*) 0); |
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} |
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# endif |
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#endif |
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template <class _Tp> |
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inline void _STLP_CALL return_temporary_buffer(_Tp* __p) { |
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// SunPro brain damage |
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free((char*)__p); |
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} |
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template <class _ForwardIterator, class _Tp> |
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class _Temporary_buffer { |
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private: |
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ptrdiff_t _M_original_len; |
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ptrdiff_t _M_len; |
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_Tp* _M_buffer; |
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|
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void _M_allocate_buffer() { |
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_M_original_len = _M_len; |
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_M_buffer = 0; |
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if (_M_len > (ptrdiff_t)(INT_MAX / sizeof(_Tp))) |
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_M_len = INT_MAX / sizeof(_Tp); |
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while (_M_len > 0) { |
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_M_buffer = (_Tp*) malloc(_M_len * sizeof(_Tp)); |
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if (_M_buffer) |
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break; |
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_M_len /= 2; |
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} |
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} |
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void _M_initialize_buffer(const _Tp&, const __true_type&) {} |
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void _M_initialize_buffer(const _Tp& val, const __false_type&) { |
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uninitialized_fill_n(_M_buffer, _M_len, val); |
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} |
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public: |
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ptrdiff_t size() const { return _M_len; } |
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ptrdiff_t requested_size() const { return _M_original_len; } |
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_Tp* begin() { return _M_buffer; } |
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_Tp* end() { return _M_buffer + _M_len; } |
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_Temporary_buffer(_ForwardIterator __first, _ForwardIterator __last) { |
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// Workaround for a __type_traits bug in the pre-7.3 compiler. |
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# if defined(__sgi) && !defined(__GNUC__) && _COMPILER_VERSION < 730 |
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typedef typename __type_traits<_Tp>::is_POD_type _Trivial; |
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# else |
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typedef typename __type_traits<_Tp>::has_trivial_default_constructor _Trivial; |
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# endif |
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_STLP_TRY { |
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_M_len = distance(__first, __last); |
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_M_allocate_buffer(); |
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if (_M_len > 0) |
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_M_initialize_buffer(*__first, _Trivial()); |
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} |
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_STLP_UNWIND(free(_M_buffer); _M_buffer = 0; _M_len = 0) |
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} |
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~_Temporary_buffer() { |
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_STLP_STD::_Destroy_Range(_M_buffer, _M_buffer + _M_len); |
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free(_M_buffer); |
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} |
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|
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private: |
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// Disable copy constructor and assignment operator. |
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_Temporary_buffer(const _Temporary_buffer<_ForwardIterator, _Tp>&) {} |
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void operator=(const _Temporary_buffer<_ForwardIterator, _Tp>&) {} |
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}; |
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# ifndef _STLP_NO_EXTENSIONS |
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// Class temporary_buffer is not part of the standard. It is an extension. |
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template <class _ForwardIterator, |
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class _Tp |
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#ifdef _STLP_CLASS_PARTIAL_SPECIALIZATION |
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= typename iterator_traits<_ForwardIterator>::value_type |
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#endif /* _STLP_CLASS_PARTIAL_SPECIALIZATION */ |
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> |
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struct temporary_buffer : public _Temporary_buffer<_ForwardIterator, _Tp> |
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{ |
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temporary_buffer(_ForwardIterator __first, _ForwardIterator __last) |
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: _Temporary_buffer<_ForwardIterator, _Tp>(__first, __last) {} |
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~temporary_buffer() {} |
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}; |
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|
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# endif /* _STLP_NO_EXTENSIONS */ |
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_STLP_END_NAMESPACE |
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# ifndef _STLP_LINK_TIME_INSTANTIATION |
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# include <stl/_tempbuf.c> |
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# endif |
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#endif /* _STLP_INTERNAL_TEMPBUF_H */ |
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// Local Variables: |
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// mode:C++ |
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// End: |