1 // Copyright (C) 2001 Free Software Foundation, Inc.
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 2, or (at your option)
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING. If not, write to the Free
16 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
19 // As a special exception, you may use this file as part of a free software
20 // library without restriction. Specifically, if other files instantiate
21 // templates or use macros or inline functions from this file, or you compile
22 // this file and link it with other files to produce an executable, this
23 // file does not by itself cause the resulting executable to be covered by
24 // the GNU General Public License. This exception does not however
25 // invalidate any other reasons why the executable file might be covered by
26 // the GNU General Public License.
28 #include "bits/c++config.h"
29 #include "bits/gthr.h"
34 // On AIX, and perhaps other systems, library initialization order is
35 // not guaranteed. For example, the static initializers for the main
36 // program might run before the static initializers for this library.
37 // That means that we cannot rely on static initialization in the
38 // library; there is no guarantee that things will get initialized in
39 // time. This file contains definitions of all global variables that
40 // require initialization as arrays of characters.
42 // Because <iostream> declares the standard streams to be [io]stream
43 // types instead of say [io]fstream types, it is also necessary to
44 // allocate the actual file buffers in this file.
47 // Standard "C" locale.
48 typedef char fake_locale_Impl[sizeof(locale::_Impl)]
49 __attribute__ ((aligned(__alignof__(locale::_Impl))));
50 fake_locale_Impl locale_impl_c;
52 typedef char fake_locale[sizeof(locale)]
53 __attribute__ ((aligned(__alignof__(locale))));
57 // Standard stream objects.
58 typedef char fake_istream[sizeof(istream)]
59 __attribute__ ((aligned(__alignof__(istream))));
60 typedef char fake_ostream[sizeof(ostream)]
61 __attribute__ ((aligned(__alignof__(ostream))));
67 typedef char fake_filebuf[sizeof(filebuf)]
68 __attribute__ ((aligned(__alignof__(filebuf))));
69 fake_filebuf buf_cout;
71 fake_filebuf buf_cerr;
73 #ifdef _GLIBCPP_USE_WCHAR_T
74 typedef char fake_wistream[sizeof(wistream)]
75 __attribute__ ((aligned(__alignof__(wistream))));
76 typedef char fake_wostream[sizeof(wostream)]
77 __attribute__ ((aligned(__alignof__(wostream))));
83 typedef char fake_wfilebuf[sizeof(wfilebuf)]
84 __attribute__ ((aligned(__alignof__(wfilebuf))));
85 fake_wfilebuf buf_wcout;
86 fake_wfilebuf buf_wcin;
87 fake_wfilebuf buf_wcerr;
91 // Globals for once-only runtime initialization of mutex objects. This
92 // allows static initialization of these objects on systems that need a
93 // function call to initialize a mutex. For example, see stl_threads.h.
94 #ifdef __GTHREAD_MUTEX_INIT
95 // Need to provide explicit instantiations of static data for
96 // systems with broken weak linkage support.
97 template __gthread_mutex_t _Swap_lock_struct<0>::_S_swap_lock;
98 #elif defined(__GTHREAD_MUTEX_INIT_FUNCTION)
99 __gthread_once_t _GLIBCPP_once = __GTHREAD_ONCE_INIT;
100 __gthread_mutex_t _GLIBCPP_mutex;
101 __gthread_mutex_t *_GLIBCPP_mutex_address;
103 // Once-only initializer function for _GLIBCPP_mutex.
105 _GLIBCPP_mutex_init ()
106 { __GTHREAD_MUTEX_INIT_FUNCTION (&_GLIBCPP_mutex); }
108 // Once-only initializer function for _GLIBCPP_mutex_address.
110 _GLIBCPP_mutex_address_init ()
111 { __GTHREAD_MUTEX_INIT_FUNCTION (_GLIBCPP_mutex_address); }