1// -*- C++ -*-
2// Utilities for testing threads for the C++ library testsuite.
3//
4// Copyright (C) 2009 Free Software Foundation, Inc.
5//
6// This file is part of the GNU ISO C++ Library.  This library is free
7// software; you can redistribute it and/or modify it under the
8// terms of the GNU General Public License as published by the
9// Free Software Foundation; either version 3, or (at your option)
10// any later version.
11//
12// This library is distributed in the hope that it will be useful,
13// but WITHOUT ANY WARRANTY; without even the implied warranty of
14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15// GNU General Public License for more details.
16//
17// You should have received a copy of the GNU General Public License along
18// with this library; see the file COPYING3.  If not see
19// <http://www.gnu.org/licenses/>.
20//
21
22#ifndef _GLIBCXX_TESTSUITE_THREAD_H
23#define _GLIBCXX_TESTSUITE_THREAD_H
24
25#include <sstream>
26#include <stdexcept>
27#include <type_traits>
28
29// C++0x only.
30namespace __gnu_test
31{
32  // Assume _Tp::native_handle_type.
33  // Check C++ to native_handle_type characteristics: size and alignment.
34  template<typename _Tp>
35    void
36    compare_type_to_native_type()
37    {
38      typedef _Tp test_type;
39
40      // Remove possible pointer type.
41      typedef typename test_type::native_handle_type native_handle;
42      typedef typename std::remove_pointer<native_handle>::type native_type;
43
44      int st = sizeof(test_type);
45      int snt = sizeof(native_type);
46      int at = __alignof__(test_type);
47      int ant = __alignof__(native_type);
48      if (st != snt || at != ant)
49	{
50	  std::ostringstream s;
51	  s << std::endl;
52	  s << "size of _Tp: " << st << std::endl;
53	  s << "alignment of _Tp: " << st << std::endl;
54	  s << "size of *(_Tp::native_handle_type): " << snt << std::endl;
55	  s << "alignment of *(_Tp::native_handle_type): " << snt << std::endl;
56	  throw std::runtime_error(s.str());
57	}
58    }
59} // namespace __gnu_test
60
61#endif // _GLIBCXX_TESTSUITE_THREAD_H
62
63