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-rw-r--r--contrib/libstdc++/src/ios.cc228
1 files changed, 37 insertions, 191 deletions
diff --git a/contrib/libstdc++/src/ios.cc b/contrib/libstdc++/src/ios.cc
index 00dbe12..12ffe2f 100644
--- a/contrib/libstdc++/src/ios.cc
+++ b/contrib/libstdc++/src/ios.cc
@@ -1,6 +1,6 @@
// Iostreams base classes -*- C++ -*-
-// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
@@ -33,45 +33,11 @@
//
#include <ios>
-#include <ostream>
-#include <istream>
-#include <fstream>
+#include <limits>
#include <bits/atomicity.h>
-#include <ext/stdio_filebuf.h>
-#ifdef _GLIBCPP_HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-namespace __gnu_cxx
-{
- // Extern declarations for global objects in src/globals.cc.
- extern stdio_filebuf<char> buf_cout;
- extern stdio_filebuf<char> buf_cin;
- extern stdio_filebuf<char> buf_cerr;
-
-#ifdef _GLIBCPP_USE_WCHAR_T
- extern stdio_filebuf<wchar_t> buf_wcout;
- extern stdio_filebuf<wchar_t> buf_wcin;
- extern stdio_filebuf<wchar_t> buf_wcerr;
-#endif
-} // namespace __gnu_cxx
namespace std
{
- using namespace __gnu_cxx;
-
- extern istream cin;
- extern ostream cout;
- extern ostream cerr;
- extern ostream clog;
-
-#ifdef _GLIBCPP_USE_WCHAR_T
- extern wistream wcin;
- extern wostream wcout;
- extern wostream wcerr;
- extern wostream wclog;
-#endif
-
// Definitions for static const data members of __ios_flags.
const __ios_flags::__int_type __ios_flags::_S_boolalpha;
const __ios_flags::__int_type __ios_flags::_S_dec;
@@ -140,102 +106,33 @@ namespace std
const ios_base::seekdir ios_base::end;
const int ios_base::_S_local_word_size;
- int ios_base::Init::_S_ios_base_init = 0;
- bool ios_base::Init::_S_synced_with_stdio = true;
- ios_base::failure::failure(const string& __str) throw()
- {
- strncpy(_M_name, __str.c_str(), _M_bufsize);
- _M_name[_M_bufsize - 1] = '\0';
- }
+ _Atomic_word ios_base::Init::_S_refcount;
- ios_base::failure::~failure() throw()
- { }
-
- const char*
- ios_base::failure::what() const throw()
- { return _M_name; }
-
- void
- ios_base::Init::_S_ios_create(bool __sync)
- {
- size_t __out_size = __sync ? 0 : static_cast<size_t>(BUFSIZ);
-#ifdef _GLIBCPP_HAVE_ISATTY
- size_t __in_size =
- (__sync || isatty (0)) ? 1 : static_cast<size_t>(BUFSIZ);
-#else
- size_t __in_size = 1;
-#endif
-
- // NB: The file globals.cc creates the four standard files
- // with NULL buffers. At this point, we swap out the dummy NULL
- // [io]stream objects and buffers with the real deal.
- new (&buf_cout) stdio_filebuf<char>(stdout, ios_base::out, __out_size);
- new (&buf_cin) stdio_filebuf<char>(stdin, ios_base::in, __in_size);
- new (&buf_cerr) stdio_filebuf<char>(stderr, ios_base::out, __out_size);
-
- new (&cout) ostream(&buf_cout);
- new (&cin) istream(&buf_cin);
- new (&cerr) ostream(&buf_cerr);
- new (&clog) ostream(&buf_cerr);
- cout.init(&buf_cout);
- cin.init(&buf_cin);
- cerr.init(&buf_cerr);
- clog.init(&buf_cerr);
- cin.tie(&cout);
- cerr.flags(ios_base::unitbuf);
-
-#ifdef _GLIBCPP_USE_WCHAR_T
- new (&buf_wcout) stdio_filebuf<wchar_t>(stdout, ios_base::out, __out_size);
- new (&buf_wcin) stdio_filebuf<wchar_t>(stdin, ios_base::in, __in_size);
- new (&buf_wcerr) stdio_filebuf<wchar_t>(stderr, ios_base::out, __out_size);
- new (&wcout) wostream(&buf_wcout);
- new (&wcin) wistream(&buf_wcin);
- new (&wcerr) wostream(&buf_wcerr);
- new (&wclog) wostream(&buf_wcerr);
- wcout.init(&buf_wcout);
- wcin.init(&buf_wcin);
- wcerr.init(&buf_wcerr);
- wclog.init(&buf_wcerr);
- wcin.tie(&wcout);
- wcerr.flags(ios_base::unitbuf);
-#endif
- }
+ bool ios_base::Init::_S_synced_with_stdio = true;
- void
- ios_base::Init::_S_ios_destroy()
+ ios_base::ios_base()
+ : _M_precision(), _M_width(), _M_flags(), _M_exception(),
+ _M_streambuf_state(), _M_callbacks(0), _M_word_zero(),
+ _M_word_size(_S_local_word_size), _M_word(_M_local_word), _M_ios_locale()
{
- // Explicitly call dtors to free any memory that is dynamically
- // allocated by filebuf ctor or member functions, but don't
- // deallocate all memory by calling operator delete.
- buf_cout.~stdio_filebuf();
- buf_cin.~stdio_filebuf();
- buf_cerr.~stdio_filebuf();
-
-#ifdef _GLIBCPP_USE_WCHAR_T
- buf_wcout.~stdio_filebuf();
- buf_wcin.~stdio_filebuf();
- buf_wcerr.~stdio_filebuf();
-#endif
+ // Do nothing: basic_ios::init() does it.
+ // NB: _M_callbacks and _M_word must be zero for non-initialized
+ // ios_base to go through ~ios_base gracefully.
}
-
- ios_base::Init::Init()
+
+ // 27.4.2.7 ios_base constructors/destructors
+ ios_base::~ios_base()
{
- if (_S_ios_base_init == 0)
+ _M_call_callbacks(erase_event);
+ _M_dispose_callbacks();
+ if (_M_word != _M_local_word)
{
- // Standard streams default to synced with "C" operations.
- ios_base::Init::_S_synced_with_stdio = true;
- _S_ios_create(ios_base::Init::_S_synced_with_stdio);
+ delete [] _M_word;
+ _M_word = 0;
}
- ++_S_ios_base_init;
}
- ios_base::Init::~Init()
- {
- if (--_S_ios_base_init == 0)
- _S_ios_destroy();
- }
-
// 27.4.2.5 ios_base storage functions
int
ios_base::xalloc() throw()
@@ -243,12 +140,16 @@ namespace std
// Implementation note: Initialize top to zero to ensure that
// initialization occurs before main() is started.
static _Atomic_word _S_top = 0;
- return __exchange_and_add(&_S_top, 1) + 4;
+ return __gnu_cxx::__exchange_and_add(&_S_top, 1) + 4;
}
+ void
+ ios_base::register_callback(event_callback __fn, int __index)
+ { _M_callbacks = new _Callback_list(__fn, __index, _M_callbacks); }
+
// 27.4.2.5 iword/pword storage
ios_base::_Words&
- ios_base::_M_grow_words(int ix)
+ ios_base::_M_grow_words(int ix, bool iword)
{
// Precondition: _M_word_size <= ix
int newsize = _S_local_word_size;
@@ -264,7 +165,12 @@ namespace std
{
_M_streambuf_state |= badbit;
if (_M_streambuf_state & _M_exception)
- __throw_ios_failure("ios_base::_M_grow_words failure");
+ __throw_ios_failure(__N("ios_base::_M_grow_words "
+ "allocation failed"));
+ if (iword)
+ _M_word_zero._M_iword = 0;
+ else
+ _M_word_zero._M_pword = 0;
return _M_word_zero;
}
for (int i = 0; i < _M_word_size; i++)
@@ -279,7 +185,11 @@ namespace std
{
_M_streambuf_state |= badbit;
if (_M_streambuf_state & _M_exception)
- __throw_ios_failure("ios_base::_M_grow_words failure");
+ __throw_ios_failure(__N("ios_base::_M_grow_words is not valid"));
+ if (iword)
+ _M_word_zero._M_iword = 0;
+ else
+ _M_word_zero._M_pword = 0;
return _M_word_zero;
}
}
@@ -287,51 +197,6 @@ namespace std
_M_word_size = newsize;
return _M_word[ix];
}
-
- // Called only by basic_ios<>::init.
- void
- ios_base::_M_init()
- {
- // NB: May be called more than once
- _M_precision = 6;
- _M_width = 0;
- _M_flags = skipws | dec;
- _M_ios_locale = locale();
- }
-
- // 27.4.2.3 ios_base locale functions
- locale
- ios_base::imbue(const locale& __loc)
- {
- locale __old = _M_ios_locale;
- _M_ios_locale = __loc;
- _M_call_callbacks(imbue_event);
- return __old;
- }
-
- ios_base::ios_base() : _M_callbacks(0), _M_word_size(_S_local_word_size),
- _M_word(_M_local_word)
- {
- // Do nothing: basic_ios::init() does it.
- // NB: _M_callbacks and _M_word must be zero for non-initialized
- // ios_base to go through ~ios_base gracefully.
- }
-
- // 27.4.2.7 ios_base constructors/destructors
- ios_base::~ios_base()
- {
- _M_call_callbacks(erase_event);
- _M_dispose_callbacks();
- if (_M_word != _M_local_word)
- {
- delete [] _M_word;
- _M_word = 0;
- }
- }
-
- void
- ios_base::register_callback(event_callback __fn, int __index)
- { _M_callbacks = new _Callback_list(__fn, __index, _M_callbacks); }
void
ios_base::_M_call_callbacks(event __e) throw()
@@ -359,23 +224,4 @@ namespace std
}
_M_callbacks = 0;
}
-
- bool
- ios_base::sync_with_stdio(bool __sync)
- {
-#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
- // 49. Underspecification of ios_base::sync_with_stdio
- bool __ret = ios_base::Init::_S_synced_with_stdio;
-#endif
-
- // Turn off sync with C FILE* for cin, cout, cerr, clog iff
- // currently synchronized.
- if (!__sync && __ret)
- {
- ios_base::Init::_S_synced_with_stdio = false;
- ios_base::Init::_S_ios_destroy();
- ios_base::Init::_S_ios_create(ios_base::Init::_S_synced_with_stdio);
- }
- return __ret;
- }
-} // namespace std
+} // namespace std
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