/usr/include/caf/io/spawn_io.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. *
******************************************************************************/
#ifndef CAF_IO_SPAWN_IO_HPP
#define CAF_IO_SPAWN_IO_HPP
#include <functional>
#include "caf/spawn.hpp"
#include "caf/io/broker.hpp"
#include "caf/io/middleman.hpp"
#include "caf/io/connection_handle.hpp"
#include "caf/io/network/native_socket.hpp"
namespace caf {
namespace io {
/**
* Spawns a new functor-based broker.
*/
template <spawn_options Os = no_spawn_options,
typename F = std::function<void(broker*)>, class... Ts>
actor spawn_io(F fun, Ts&&... xs) {
return spawn<broker::functor_based>(std::move(fun), std::forward<Ts>(xs)...);
}
/**
* Spawns a new functor-based broker connecting to `host:port.
*/
template <spawn_options Os = no_spawn_options,
typename F = std::function<void(broker*)>, class... Ts>
actor spawn_io_client(F fun, const std::string& host,
uint16_t port, Ts&&... xs) {
// provoke compiler error early
using fun_res = decltype(fun(static_cast<broker*>(nullptr),
connection_handle{},
std::forward<Ts>(xs)...));
// prevent warning about unused local type
static_assert(std::is_same<fun_res, fun_res>::value,
"your compiler is lying to you");
// works around an issue with older GCC releases that could not handle
// variadic template parameter packs inside lambdas by storing into a
// std::function first (using `auto init =` won't compile on Clang)
auto mfptr = &broker::functor_based::init<F, connection_handle, Ts...>;
using bi = std::function<void (broker::functor_based*, F, connection_handle)>;
using namespace std::placeholders;
bi init = std::bind(mfptr, _1, _2, _3, std::forward<Ts>(xs)...);
return spawn_class<broker::functor_based>(
nullptr,
[&](broker::functor_based* ptr) {
auto mm = middleman::instance();
auto hdl = mm->backend().add_tcp_scribe(ptr, host, port);
init(ptr, fun, hdl);
});
}
/**
* Spawns a new broker as server running on given `port`.
*/
template <spawn_options Os = no_spawn_options,
class F = std::function<void(broker*)>, class... Ts>
actor spawn_io_server(F fun, uint16_t port, Ts&&... xs) {
// same workaround as above
auto mfptr = &broker::functor_based::init<F, Ts...>;
using bi = std::function<void (broker::functor_based*, F)>;
using namespace std::placeholders;
bi init = std::bind(mfptr, _1, _2, std::forward<Ts>(xs)...);
return spawn_class<broker::functor_based>(
nullptr,
[&](broker::functor_based* ptr) {
auto mm = middleman::instance();
mm->backend().add_tcp_doorman(ptr, port);
init(ptr, std::move(fun));
});
}
} // namespace io
} // namespace caf
#endif // CAF_IO_SPAWN_IO_HPP
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