| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <functional> |
| |
| // template <class T> |
| // struct hash |
| // : public unary_function<T, size_t> |
| // { |
| // size_t operator()(T val) const; |
| // }; |
| |
| // Not very portable |
| |
| #include <thread> |
| #include <cassert> |
| |
| int main() |
| { |
| std::thread::id id1; |
| std::thread::id id2 = std::this_thread::get_id(); |
| typedef std::hash<std::thread::id> H; |
| H h; |
| assert(h(id1) != h(id2)); |
| } |