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2003-07-14 Paolo Carlini <pcarlini@unitus.it> Nathan C. Myers <ncm-nospam@cantrip.org> PR libstdc++/11378 * include/std/std_fstream.h (xsputn): Declare only. * include/bits/fstream.tcc (xsputn): Define, optimize for the always_noconv() case: when __n is sufficiently large flush the buffer and issue a direct write, if possible combining the two with writev in __basic_file<>::xsputn_2. * config/io/basic_file_stdio.h (__basic_file<>::xsputn_2): New, declare. * config/io/basic_file_stdio.cc (__basic_file<>::xsputn_2): Define. * acinclude.m4 (GLIBCXX_CHECK_WRITE): New macro, checking for the availability of writev in <sys/uio.h>. * configure.in: Call here. * acconfig.h: Add undef for the corresponding symbol. * aclocal.m4: Regenerate. * configure: Regenerate. * config.h.in: Regenerate. * testsuite/27_io/basic_filebuf/setbuf/char/3.cc: Tweak. * include/std/std_fstream.h (sync): Constify a variable. Co-Authored-By: Nathan C. Myers <ncm-nospam@cantrip.org> From-SVN: r69341
123 lines
3.2 KiB
C++
123 lines
3.2 KiB
C++
// Wrapper of C-language FILE struct -*- C++ -*-
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// Copyright (C) 2000, 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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// ISO C++ 14882: 27.8 File-based streams
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//
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/** @file basic_file.h
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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 _BASIC_FILE_STDIO_H
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#define _BASIC_FILE_STDIO_H 1
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#pragma GCC system_header
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#include <bits/c++config.h>
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#include <ios>
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namespace std
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{
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// Generic declaration.
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template<typename _CharT>
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class __basic_file;
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// Specialization.
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template<>
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class __basic_file<char>
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{
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// Underlying data source/sink.
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__c_file* _M_cfile;
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// True iff we opened _M_cfile, and thus must close it ourselves.
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bool _M_cfile_created;
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public:
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__basic_file(__c_lock* __lock = 0);
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void
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_M_open_mode(ios_base::openmode __mode, int& __p_mode, int& __rw_mode,
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char* __c_mode);
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__basic_file*
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open(const char* __name, ios_base::openmode __mode, int __prot = 0664);
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__basic_file*
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sys_open(__c_file* __file, ios_base::openmode);
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__basic_file*
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sys_open(int __fd, ios_base::openmode __mode, bool __del);
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int
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sys_getc();
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int
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sys_ungetc(int);
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__basic_file*
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close();
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bool
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is_open() const;
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int
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fd();
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~__basic_file();
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streamsize
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xsputn(const char* __s, streamsize __n);
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streamsize
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xsputn_2(const char* __s1, streamsize __n1,
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const char* __s2, streamsize __n2);
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streamsize
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xsgetn(char* __s, streamsize __n);
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streampos
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seekoff(streamoff __off, ios_base::seekdir __way,
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ios_base::openmode __mode = ios_base::in | ios_base::out);
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streampos
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seekpos(streampos __pos,
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ios_base::openmode __mode = ios_base::in | ios_base::out);
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int
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sync();
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streamsize
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showmanyc();
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};
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} // namespace std
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#endif
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