// Iostreams base classes -*- C++ -*-
-// Copyright (C) 1997-1999 Free Software Foundation, Inc.
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
+// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// ISO C++ 14882: 27.8 File-based streams
//
+/** @file ios_base.h
+ * This is an internal header file, included by other library headers.
+ * You should not attempt to use it directly.
+ */
+
#ifndef _CPP_BITS_IOSBASE_H
#define _CPP_BITS_IOSBASE_H 1
-namespace std {
+#pragma GCC system_header
+
+#include <bits/atomicity.h>
+namespace std
+{
// The following definitions of bitmask types are enums, not ints,
// as permitted (but not required) in the standard, in order to provide
// better type safety in iostream calls. A side effect is that
// expressions involving them are no longer compile-time constants.
- enum _Ios_Fmtflags { _S_ios_fmtflags_end = 1<<16 };
+ enum _Ios_Fmtflags { _M_ios_fmtflags_end = 1L << 16 };
inline _Ios_Fmtflags
operator&(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
{ return _Ios_Fmtflags(~static_cast<int>(__a)); }
- enum _Ios_Openmode { _S_ios_openmode_end = 1<<16 };
+ enum _Ios_Openmode { _M_ios_openmode_end = 1L << 16 };
inline _Ios_Openmode
operator&(_Ios_Openmode __a, _Ios_Openmode __b)
{ return _Ios_Openmode(~static_cast<int>(__a)); }
- enum _Ios_Iostate { _S_ios_iostate_end = 1<<16 };
+ enum _Ios_Iostate { _M_ios_iostate_end = 1L << 16 };
inline _Ios_Iostate
operator&(_Ios_Iostate __a, _Ios_Iostate __b)
operator~(_Ios_Iostate __a)
{ return _Ios_Iostate(~static_cast<int>(__a)); }
- enum _Ios_Seekdir { _S_ios_Seekdir_end = 1<<16 };
+ enum _Ios_Seekdir { _M_ios_seekdir_end = 1L << 16 };
// 27.4.2 Class ios_base
class ios_base
{
public:
-
+
// 27.4.2.1.1 Class ios_base::failure
class failure : public exception
{
public:
#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
- // Can't do exception(_msg) as defined in 27.4.2.1.1
+ //48. Use of non-existent exception constructor
explicit
- failure(const string& __str);
+ failure(const string& __str) throw();
virtual
- ~failure() { };
+ ~failure() throw();
- virtual const
- char* what() const throw() { return _M_name; }
+ virtual const char*
+ what() const throw();
private:
enum { _M_bufsize = 256 };
streamsize _M_width;
fmtflags _M_flags;
- // 27.4.2.6 Members for callbacks
+ // 27.4.2.6 Members for callbacks
// 27.4.2.6 ios_base callbacks
-
struct _Callback_list
{
// Data Members
_Callback_list* _M_next;
ios_base::event_callback _M_fn;
int _M_index;
- int _M_refcount; // 0 means one reference.
+ _Atomic_word _M_refcount; // 0 means one reference.
_Callback_list(ios_base::event_callback __fn, int __index,
_Callback_list* __cb)
: _M_next(__cb), _M_fn(__fn), _M_index(__index), _M_refcount(0) { }
void
- _M_add_reference() { ++_M_refcount; } // XXX MT
-
+ _M_add_reference() { __atomic_add(&_M_refcount, 1); }
+
int
- _M_remove_reference() { return _M_refcount--; } // 0 => OK to delete
+ _M_remove_reference() { return __exchange_and_add(&_M_refcount, -1); }
+ // 0 => OK to delete
};
_Callback_list* _M_callbacks;
void
_M_dispose_callbacks(void);
- // 27.4.2.5 Members for iword/pword storage
+ // 27.4.2.5 Members for iword/pword storage
struct _Words
{
void* _M_pword;
_M_init();
public:
+
// 27.4.2.1.6 Class ios_base::Init
// Used to initialize standard streams. In theory, g++ could use
// -finit-priority to order this stuff correctly without going
// through these machinations.
-
class Init
{
friend class ios_base;
public:
Init();
~Init();
+
+ static void
+ _S_ios_create(bool __sync);
+
+ static void
+ _S_ios_destroy();
+
private:
static int _S_ios_base_init;
- filebuf* _M_cout;
- filebuf* _M_cin;
- filebuf* _M_cerr;
-#ifdef _GLIBCPP_USE_WCHAR_T
- wfilebuf* _M_wcout;
- wfilebuf* _M_wcin;
- wfilebuf* _M_wcerr;
-#endif
+ static bool _S_synced_with_stdio;
};
// Fmtflags state:
static bool
sync_with_stdio(bool __sync = true);
- // Locales:
+ // Locales:
locale
imbue(const locale& __loc);
ios_base();
#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
+ //50. Copy constructor and assignment operator of ios_base
private:
ios_base(const ios_base&);
#endif /* _CPP_BITS_IOSBASE_H */
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