src/corosio/src/resolver.cpp
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src/corosio/src/resolver.cpp
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|---|---|---|---|
| 1 | // | ||
| 2 | // Copyright (c) 2025 Vinnie Falco (vinnie.falco@gmail.com) | ||
| 3 | // | ||
| 4 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | ||
| 5 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | ||
| 6 | // | ||
| 7 | // Official repository: https://github.com/cppalliance/corosio | ||
| 8 | // | ||
| 9 | |||
| 10 | #include <boost/corosio/resolver.hpp> | ||
| 11 | #include <boost/corosio/detail/platform.hpp> | ||
| 12 | |||
| 13 | #if BOOST_COROSIO_HAS_IOCP | ||
| 14 | #include "src/detail/iocp/resolver_service.hpp" | ||
| 15 | #elif BOOST_COROSIO_POSIX | ||
| 16 | #include "src/detail/posix/resolver_service.hpp" | ||
| 17 | #endif | ||
| 18 | |||
| 19 | #include <stdexcept> | ||
| 20 | |||
| 21 | /* | ||
| 22 | Resolver Frontend | ||
| 23 | ================= | ||
| 24 | |||
| 25 | This file implements the public resolver class, which delegates to | ||
| 26 | platform-specific services: | ||
| 27 | - Windows: win_resolver_service (uses GetAddrInfoExW) | ||
| 28 | - POSIX: posix_resolver_service (uses getaddrinfo + worker threads) | ||
| 29 | |||
| 30 | The resolver constructor uses find_service() to locate the resolver | ||
| 31 | service, which must have been previously created by the scheduler | ||
| 32 | during io_context construction. If not found, construction fails. | ||
| 33 | |||
| 34 | This separation allows the public API to be platform-agnostic while | ||
| 35 | the implementation details are hidden in the detail namespace. | ||
| 36 | */ | ||
| 37 | |||
| 38 | namespace boost::corosio { | ||
| 39 | namespace { | ||
| 40 | |||
| 41 | #if BOOST_COROSIO_HAS_IOCP | ||
| 42 | using resolver_service = detail::win_resolver_service; | ||
| 43 | #elif BOOST_COROSIO_POSIX | ||
| 44 | using resolver_service = detail::posix_resolver_service; | ||
| 45 | #endif | ||
| 46 | |||
| 47 | } // namespace | ||
| 48 | |||
| 49 | 30 | resolver:: | |
| 50 | ~resolver() = default; | ||
| 51 | |||
| 52 | 29 | resolver:: | |
| 53 | resolver( | ||
| 54 | 29 | capy::execution_context& ctx) | |
| 55 |
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29 | : io_object(create_handle<resolver_service>(ctx)) |
| 56 | { | ||
| 57 | 29 | } | |
| 58 | |||
| 59 | void | ||
| 60 | 4 | resolver:: | |
| 61 | cancel() | ||
| 62 | { | ||
| 63 |
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4 | if (h_) |
| 64 | 4 | get().cancel(); | |
| 65 | 4 | } | |
| 66 | |||
| 67 | } // namespace boost::corosio | ||
| 68 |