Store main thread lua_State* in shared_ptr_deleter.
[luabind.git] / luabind / yield_policy.hpp
blob9dbbefa2969b08df2aa6d2d71b1aaa2e6ba81c8a
1 // Copyright (c) 2003 Daniel Wallin and Arvid Norberg
3 // Permission is hereby granted, free of charge, to any person obtaining a
4 // copy of this software and associated documentation files (the "Software"),
5 // to deal in the Software without restriction, including without limitation
6 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
7 // and/or sell copies of the Software, and to permit persons to whom the
8 // Software is furnished to do so, subject to the following conditions:
10 // The above copyright notice and this permission notice shall be included
11 // in all copies or substantial portions of the Software.
13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
14 // ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
15 // TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
16 // PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
17 // SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
18 // ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
19 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
21 // OR OTHER DEALINGS IN THE SOFTWARE.
24 #ifndef LUABIND_YIELD_POLICY_HPP_INCLUDED
25 #define LUABIND_YIELD_POLICY_HPP_INCLUDED
27 #include <luabind/config.hpp>
28 #include <luabind/detail/policy.hpp>
30 namespace luabind { namespace detail
32 struct yield_policy
34 static void precall(lua_State*, const index_map&) {}
35 static void postcall(lua_State*, const index_map&) {}
38 template<class T>
39 struct has_yield
41 BOOST_STATIC_CONSTANT(bool,
42 value = (boost::is_same<yield_policy, typename T::head>::value ||
43 has_yield<typename T::tail>::value));
46 template<>
47 struct has_yield<null_type>
49 BOOST_STATIC_CONSTANT(bool, value = false);
53 namespace luabind
55 detail::policy_cons<detail::yield_policy, detail::null_type> const yield = {};
57 namespace detail
59 inline void ignore_unused_yield()
61 (void)yield;
66 #endif // LUABIND_YIELD_POLICY_HPP_INCLUDED