2 // Utilities for testing threads for the C++ library testsuite.
4 // Copyright (C) 2009-2013 Free Software Foundation, Inc.
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)
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.
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/>.
22 #ifndef _GLIBCXX_TESTSUITE_THREAD_H
23 #define _GLIBCXX_TESTSUITE_THREAD_H
27 #include <type_traits>
32 // Assume _Tp::native_handle_type.
33 // Check C++ to native_handle_type characteristics: size and alignment.
34 template<typename _Tp>
36 compare_type_to_native_type()
38 typedef _Tp test_type;
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;
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)
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());
59 } // namespace __gnu_test
61 #endif // _GLIBCXX_TESTSUITE_THREAD_H