/usr/include/caf/spawn_fwd.hpp is in libcaf-dev 0.13.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* ____ _ _____ *
* / ___| / \ | ___| C++ *
* | | / _ \ | |_ Actor *
* | |___ / ___ \| _| Framework *
* \____/_/ \_|_| *
* *
* Copyright (C) 2011 - 2015 *
* Dominik Charousset <dominik.charousset (at) haw-hamburg.de> *
* *
* Distributed under the terms and conditions of the BSD 3-Clause License or *
* (at your option) under the terms and conditions of the Boost Software *
* License 1.0. See accompanying files LICENSE and LICENSE_ALTERNATIVE. *
* *
* If you did not receive a copy of the license files, see *
* http://opensource.org/licenses/BSD-3-Clause and *
* http://www.boost.org/LICENSE_1_0.txt. *
******************************************************************************/
// this header contains prototype definitions of the spawn function famility;
// implementations can be found in spawn.hpp (this header is included there)
#ifndef CAF_SPAWN_FWD_HPP
#define CAF_SPAWN_FWD_HPP
#include "caf/group.hpp"
#include "caf/typed_actor.hpp"
#include "caf/spawn_options.hpp"
#include "caf/detail/type_list.hpp"
namespace caf {
template <class C,
spawn_options Os = no_spawn_options,
class BeforeLaunch = std::function<void (C*)>,
class... Ts>
intrusive_ptr<C> spawn_class(execution_unit* host,
BeforeLaunch before_launch_fun,
Ts&&... xs);
template <spawn_options Os = no_spawn_options,
class BeforeLaunch = void (*)(abstract_actor*),
class F = behavior (*)(),
class... Ts>
actor spawn_functor(execution_unit* host,
BeforeLaunch before_launch_fun,
F fun,
Ts&&... xs);
class group_subscriber {
public:
inline group_subscriber(const group& grp) : m_grp(grp) {
// nop
}
template <class T>
inline void operator()(T* ptr) const {
ptr->join(m_grp);
}
private:
group m_grp;
};
struct empty_before_launch_callback {
template <class T>
inline void operator()(T*) const {
// nop
}
};
/******************************************************************************
* typed actors *
******************************************************************************/
template <class TypedBehavior, class FirstArg>
struct infer_typed_actor_handle;
// infer actor type from result type if possible
template <class... Sigs, class FirstArg>
struct infer_typed_actor_handle<typed_behavior<Sigs...>, FirstArg> {
using type = typed_actor<Sigs...>;
};
// infer actor type from first argument if result type is void
template <class... Sigs>
struct infer_typed_actor_handle<void, typed_event_based_actor<Sigs...>*> {
using type = typed_actor<Sigs...>;
};
template <class SignatureList>
struct actor_handle_from_signature_list;
template <class... Sigs>
struct actor_handle_from_signature_list<detail::type_list<Sigs...>> {
using type = typed_actor<Sigs...>;
};
template <spawn_options Os, typename BeforeLaunch, typename F, class... Ts>
typename infer_typed_actor_handle<
typename detail::get_callable_trait<F>::result_type,
typename detail::tl_head<
typename detail::get_callable_trait<F>::arg_types
>::type
>::type
spawn_typed_functor(execution_unit*, BeforeLaunch bl, F fun, Ts&&... xs);
} // namespace caf
#endif // CAF_SPAWN_FWD_HPP
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