include/boost/corosio/native/detail/posix/posix_resolver_service.hpp
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boost::corosio::detail::posix_resolver_service::posix_resolver_service(boost::capy::execution_context&, boost::corosio::detail::scheduler&)
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boost::corosio::detail::posix_resolver_service::~posix_resolver_service()
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boost::corosio::detail::posix_resolver_service::destroy(boost::corosio::io_object::implementation*)
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boost::corosio::detail::posix_resolver_service::pool()
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boost::corosio::detail::posix_resolver_service::resolver_unavailable() const
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boost::corosio::detail::posix_resolver_detail::flags_to_hints(boost::corosio::resolve_flags)
:107
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boost::corosio::detail::posix_resolver_detail::flags_to_ni_flags(boost::corosio::reverse_flags)
:128
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boost::corosio::detail::posix_resolver_detail::convert_results(addrinfo*, std::__1::basic_string_view<char, std::__1::char_traits<char>>, std::__1::basic_string_view<char, std::__1::char_traits<char>>)
:145
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boost::corosio::detail::posix_resolver_detail::make_gai_error(int)
:171
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boost::corosio::detail::posix_resolver::posix_resolver(boost::corosio::detail::posix_resolver_service&)
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boost::corosio::detail::posix_resolver::resolve_op::reset()
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boost::corosio::detail::posix_resolver::resolve_op::operator()()
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boost::corosio::detail::posix_resolver::resolve_op::destroy()
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boost::corosio::detail::posix_resolver::resolve_op::request_cancel()
:289
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boost::corosio::detail::posix_resolver::resolve_op::start(std::__1::stop_token const&)
:295
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boost::corosio::detail::posix_resolver::reverse_resolve_op::reset()
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boost::corosio::detail::posix_resolver::reverse_resolve_op::operator()()
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boost::corosio::detail::posix_resolver::reverse_resolve_op::destroy()
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boost::corosio::detail::posix_resolver::reverse_resolve_op::request_cancel()
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boost::corosio::detail::posix_resolver::reverse_resolve_op::start(std::__1::stop_token const&)
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boost::corosio::detail::posix_resolver::resolve(std::__1::coroutine_handle<void>, boost::capy::executor_ref, std::__1::basic_string_view<char, std::__1::char_traits<char>>, std::__1::basic_string_view<char, std::__1::char_traits<char>>, boost::corosio::resolve_flags, std::__1::stop_token, std::__1::error_code*, std::__1::vector<boost::corosio::resolver_entry, std::__1::allocator<boost::corosio::resolver_entry>>*)
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boost::corosio::detail::posix_resolver::reverse_resolve(std::__1::coroutine_handle<void>, boost::capy::executor_ref, boost::corosio::endpoint const&, boost::corosio::reverse_flags, std::__1::stop_token, std::__1::error_code*, boost::corosio::reverse_resolver_result*)
:420
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boost::corosio::detail::posix_resolver::cancel()
:465
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boost::corosio::detail::posix_resolver::do_resolve_work(boost::corosio::detail::pool_work_item*)
:472
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boost::corosio::detail::posix_resolver::do_reverse_resolve_work(boost::corosio::detail::pool_work_item*)
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boost::corosio::detail::posix_resolver_service::shutdown()
:564
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boost::corosio::detail::posix_resolver_service::construct()
:582
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boost::corosio::detail::posix_resolver_service::destroy_impl(boost::corosio::detail::posix_resolver&)
:597
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boost::corosio::detail::posix_resolver_service::post(boost::corosio::detail::scheduler_op*)
:605
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boost::corosio::detail::posix_resolver_service::work_finished()
:617
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boost::corosio::detail::get_resolver_service(boost::capy::execution_context&, boost::corosio::detail::scheduler&)
:625
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| Line | Branch | TLA | Hits | Source Code |
|---|---|---|---|---|
| 1 | // | |||
| 2 | // Copyright (c) 2026 Steve Gerbino | |||
| 3 | // Copyright (c) 2026 Michael Vandeberg | |||
| 4 | // | |||
| 5 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |||
| 6 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |||
| 7 | // | |||
| 8 | // Official repository: https://github.com/cppalliance/corosio | |||
| 9 | // | |||
| 10 | ||||
| 11 | #ifndef BOOST_COROSIO_NATIVE_DETAIL_POSIX_POSIX_RESOLVER_SERVICE_HPP | |||
| 12 | #define BOOST_COROSIO_NATIVE_DETAIL_POSIX_POSIX_RESOLVER_SERVICE_HPP | |||
| 13 | ||||
| 14 | #include <boost/corosio/detail/platform.hpp> | |||
| 15 | ||||
| 16 | #if BOOST_COROSIO_POSIX | |||
| 17 | ||||
| 18 | #include <boost/corosio/native/detail/posix/posix_resolver.hpp> | |||
| 19 | #include <boost/corosio/native/detail/reactor/reactor_scheduler.hpp> | |||
| 20 | #include <boost/corosio/detail/thread_pool.hpp> | |||
| 21 | ||||
| 22 | #include <unordered_map> | |||
| 23 | ||||
| 24 | namespace boost::corosio::detail { | |||
| 25 | ||||
| 26 | /** Resolver service for POSIX backends. | |||
| 27 | ||||
| 28 | Owns all posix_resolver instances. Thread lifecycle is managed | |||
| 29 | by the thread_pool service. | |||
| 30 | */ | |||
| 31 | class BOOST_COROSIO_DECL posix_resolver_service final | |||
| 32 | : public capy::execution_context::service | |||
| 33 | , public io_object::io_service | |||
| 34 | { | |||
| 35 | public: | |||
| 36 | using key_type = posix_resolver_service; | |||
| 37 | ||||
| 38 | 3993x | posix_resolver_service(capy::execution_context& ctx, scheduler& sched) | ||
| 39 | 1331x | : sched_(&sched) | ||
| 40 |
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1331x | , pool_(ctx.use_service<thread_pool>()) | |
| 41 | 3993x | { | ||
| 42 | 2662x | } | ||
| 43 | ||||
| 44 | 3993x | ~posix_resolver_service() override = default; | ||
| 45 | ||||
| 46 | posix_resolver_service(posix_resolver_service const&) = delete; | |||
| 47 | posix_resolver_service& operator=(posix_resolver_service const&) = delete; | |||
| 48 | ||||
| 49 | io_object::implementation* construct() override; | |||
| 50 | ||||
| 51 | 43x | void destroy(io_object::implementation* p) override | ||
| 52 | { | |||
| 53 | 43x | auto& impl = static_cast<posix_resolver&>(*p); | ||
| 54 | 43x | impl.cancel(); | ||
| 55 | 43x | destroy_impl(impl); | ||
| 56 | 43x | } | ||
| 57 | ||||
| 58 | void shutdown() override; | |||
| 59 | void destroy_impl(posix_resolver& impl); | |||
| 60 | ||||
| 61 | void post(scheduler_op* op); | |||
| 62 | void work_started() noexcept; | |||
| 63 | void work_finished() noexcept; | |||
| 64 | ||||
| 65 | /** Return the resolver thread pool. */ | |||
| 66 | 34x | thread_pool& pool() noexcept | ||
| 67 | { | |||
| 68 | 34x | return pool_; | ||
| 69 | } | |||
| 70 | ||||
| 71 | /// True when the resolver thread pool is unavailable: the `unsafe` tier, | |||
| 72 | /// whose lockless scheduler cannot accept the pool's cross-thread | |||
| 73 | /// completions. | |||
| 74 | 36x | bool resolver_unavailable() const noexcept | ||
| 75 | { | |||
| 76 | 36x | return sched_->scheduler_locking_disabled(); | ||
| 77 | } | |||
| 78 | ||||
| 79 | private: | |||
| 80 | scheduler* sched_; | |||
| 81 | thread_pool& pool_; | |||
| 82 | std::mutex mutex_; | |||
| 83 | intrusive_list<posix_resolver> resolver_list_; | |||
| 84 | std::unordered_map<posix_resolver*, std::shared_ptr<posix_resolver>> | |||
| 85 | resolver_ptrs_; | |||
| 86 | }; | |||
| 87 | ||||
| 88 | /** Get or create the resolver service for the given context. | |||
| 89 | ||||
| 90 | This function is called by the concrete scheduler during initialization | |||
| 91 | to create the resolver service with a reference to itself. | |||
| 92 | ||||
| 93 | @param ctx Reference to the owning execution_context. | |||
| 94 | @param sched Reference to the scheduler for posting completions. | |||
| 95 | @return Reference to the resolver service. | |||
| 96 | */ | |||
| 97 | posix_resolver_service& | |||
| 98 | get_resolver_service(capy::execution_context& ctx, scheduler& sched); | |||
| 99 | ||||
| 100 | // --------------------------------------------------------------------------- | |||
| 101 | // Inline implementation | |||
| 102 | // --------------------------------------------------------------------------- | |||
| 103 | ||||
| 104 | // posix_resolver_detail helpers | |||
| 105 | ||||
| 106 | inline int | |||
| 107 | 22x | posix_resolver_detail::flags_to_hints(resolve_flags flags) | ||
| 108 | { | |||
| 109 | 22x | int hints = 0; | ||
| 110 | ||||
| 111 |
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22x | if ((flags & resolve_flags::passive) != resolve_flags::none) | |
| 112 | 1x | hints |= AI_PASSIVE; | ||
| 113 |
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22x | if ((flags & resolve_flags::numeric_host) != resolve_flags::none) | |
| 114 | 12x | hints |= AI_NUMERICHOST; | ||
| 115 |
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22x | if ((flags & resolve_flags::numeric_service) != resolve_flags::none) | |
| 116 | 9x | hints |= AI_NUMERICSERV; | ||
| 117 |
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22x | if ((flags & resolve_flags::address_configured) != resolve_flags::none) | |
| 118 | 1x | hints |= AI_ADDRCONFIG; | ||
| 119 |
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22x | if ((flags & resolve_flags::v4_mapped) != resolve_flags::none) | |
| 120 | 1x | hints |= AI_V4MAPPED; | ||
| 121 |
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22x | if ((flags & resolve_flags::all_matching) != resolve_flags::none) | |
| 122 | 1x | hints |= AI_ALL; | ||
| 123 | ||||
| 124 | 22x | return hints; | ||
| 125 | } | |||
| 126 | ||||
| 127 | inline int | |||
| 128 | 12x | posix_resolver_detail::flags_to_ni_flags(reverse_flags flags) | ||
| 129 | { | |||
| 130 | 12x | int ni_flags = 0; | ||
| 131 | ||||
| 132 |
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12x | if ((flags & reverse_flags::numeric_host) != reverse_flags::none) | |
| 133 | 6x | ni_flags |= NI_NUMERICHOST; | ||
| 134 |
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12x | if ((flags & reverse_flags::numeric_service) != reverse_flags::none) | |
| 135 | 6x | ni_flags |= NI_NUMERICSERV; | ||
| 136 |
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12x | if ((flags & reverse_flags::name_required) != reverse_flags::none) | |
| 137 | 1x | ni_flags |= NI_NAMEREQD; | ||
| 138 |
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12x | if ((flags & reverse_flags::datagram_service) != reverse_flags::none) | |
| 139 | 1x | ni_flags |= NI_DGRAM; | ||
| 140 | ||||
| 141 | 12x | return ni_flags; | ||
| 142 | } | |||
| 143 | ||||
| 144 | inline resolver_results | |||
| 145 | 17x | posix_resolver_detail::convert_results( | ||
| 146 | struct addrinfo* ai, std::string_view host, std::string_view service) | |||
| 147 | { | |||
| 148 | 17x | std::vector<resolver_entry> entries; | ||
| 149 |
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17x | entries.reserve(4); // Most lookups return 1-4 addresses | |
| 150 | ||||
| 151 |
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41x | for (auto* p = ai; p != nullptr; p = p->ai_next) | |
| 152 | { | |||
| 153 |
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24x | if (p->ai_family == AF_INET) | |
| 154 | { | |||
| 155 | 15x | auto* addr = reinterpret_cast<sockaddr_in*>(p->ai_addr); | ||
| 156 | 15x | auto ep = from_sockaddr_in(*addr); | ||
| 157 |
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15x | entries.emplace_back(ep, host, service); | |
| 158 | 15x | } | ||
| 159 |
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9x | else if (p->ai_family == AF_INET6) | |
| 160 | { | |||
| 161 | 9x | auto* addr = reinterpret_cast<sockaddr_in6*>(p->ai_addr); | ||
| 162 | 9x | auto ep = from_sockaddr_in6(*addr); | ||
| 163 |
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9x | entries.emplace_back(ep, host, service); | |
| 164 | 9x | } | ||
| 165 | 24x | } | ||
| 166 | ||||
| 167 | 17x | return entries; | ||
| 168 | 17x | } | ||
| 169 | ||||
| 170 | inline std::error_code | |||
| 171 | 14x | posix_resolver_detail::make_gai_error(int gai_err) | ||
| 172 | { | |||
| 173 | // Map GAI errors to appropriate generic error codes | |||
| 174 |
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14x | switch (gai_err) | |
| 175 | { | |||
| 176 | case EAI_AGAIN: | |||
| 177 | // Temporary failure - try again later | |||
| 178 | 1x | return std::error_code( | ||
| 179 | static_cast<int>(std::errc::resource_unavailable_try_again), | |||
| 180 | 1x | std::generic_category()); | ||
| 181 | ||||
| 182 | case EAI_BADFLAGS: | |||
| 183 | // Invalid flags | |||
| 184 | 1x | return std::error_code( | ||
| 185 | static_cast<int>(std::errc::invalid_argument), | |||
| 186 | 1x | std::generic_category()); | ||
| 187 | ||||
| 188 | case EAI_FAIL: | |||
| 189 | // Non-recoverable failure | |||
| 190 | 1x | return std::error_code( | ||
| 191 | 1x | static_cast<int>(std::errc::io_error), std::generic_category()); | ||
| 192 | ||||
| 193 | case EAI_FAMILY: | |||
| 194 | // Address family not supported | |||
| 195 | 1x | return std::error_code( | ||
| 196 | static_cast<int>(std::errc::address_family_not_supported), | |||
| 197 | 1x | std::generic_category()); | ||
| 198 | ||||
| 199 | case EAI_MEMORY: | |||
| 200 | // Memory allocation failure | |||
| 201 | 1x | return std::error_code( | ||
| 202 | static_cast<int>(std::errc::not_enough_memory), | |||
| 203 | 1x | std::generic_category()); | ||
| 204 | ||||
| 205 | case EAI_NONAME: | |||
| 206 | // Host or service not found | |||
| 207 | 5x | return std::error_code( | ||
| 208 | static_cast<int>(std::errc::no_such_device_or_address), | |||
| 209 | 5x | std::generic_category()); | ||
| 210 | ||||
| 211 | case EAI_SERVICE: | |||
| 212 | // Service not supported for socket type | |||
| 213 | 1x | return std::error_code( | ||
| 214 | static_cast<int>(std::errc::invalid_argument), | |||
| 215 | 1x | std::generic_category()); | ||
| 216 | ||||
| 217 | case EAI_SOCKTYPE: | |||
| 218 | // Socket type not supported | |||
| 219 | 1x | return std::error_code( | ||
| 220 | static_cast<int>(std::errc::not_supported), | |||
| 221 | 1x | std::generic_category()); | ||
| 222 | ||||
| 223 | case EAI_SYSTEM: | |||
| 224 | // System error - use errno | |||
| 225 | 1x | return std::error_code(errno, std::generic_category()); | ||
| 226 | ||||
| 227 | default: | |||
| 228 | // Unknown error | |||
| 229 | 1x | return std::error_code( | ||
| 230 | 1x | static_cast<int>(std::errc::io_error), std::generic_category()); | ||
| 231 | } | |||
| 232 | 14x | } | ||
| 233 | ||||
| 234 | // posix_resolver | |||
| 235 | ||||
| 236 | 215x | inline posix_resolver::posix_resolver(posix_resolver_service& svc) noexcept | ||
| 237 | 43x | : svc_(svc) | ||
| 238 | 172x | { | ||
| 239 | 86x | } | ||
| 240 | ||||
| 241 | // posix_resolver::resolve_op implementation | |||
| 242 | ||||
| 243 | inline void | |||
| 244 | 22x | posix_resolver::resolve_op::reset() noexcept | ||
| 245 | { | |||
| 246 | 22x | host.clear(); | ||
| 247 | 22x | service.clear(); | ||
| 248 | 22x | flags = resolve_flags::none; | ||
| 249 | 22x | stored_results = resolver_results{}; | ||
| 250 | 22x | gai_error = 0; | ||
| 251 | 22x | cancelled.store(false, std::memory_order_relaxed); | ||
| 252 | 22x | stop_cb.reset(); | ||
| 253 | 22x | ec_out = nullptr; | ||
| 254 | 22x | out = nullptr; | ||
| 255 | 22x | } | ||
| 256 | ||||
| 257 | inline void | |||
| 258 | 22x | posix_resolver::resolve_op::operator()() | ||
| 259 | { | |||
| 260 | 22x | stop_cb.reset(); // Disconnect stop callback | ||
| 261 | ||||
| 262 | 22x | bool const was_cancelled = cancelled.load(std::memory_order_acquire); | ||
| 263 | ||||
| 264 |
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22x | if (ec_out) | |
| 265 | { | |||
| 266 |
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22x | if (was_cancelled) | |
| 267 | 1x | *ec_out = capy::error::canceled; | ||
| 268 |
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21x | else if (gai_error != 0) | |
| 269 | 4x | *ec_out = posix_resolver_detail::make_gai_error(gai_error); | ||
| 270 | else | |||
| 271 | 17x | *ec_out = {}; // Clear on success | ||
| 272 | 22x | } | ||
| 273 | ||||
| 274 |
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22x | if (out && !was_cancelled && gai_error == 0) | |
| 275 | 17x | *out = std::move(stored_results); | ||
| 276 | ||||
| 277 | 22x | impl->svc_.work_finished(); | ||
| 278 | 22x | cont.h = h; | ||
| 279 | 22x | dispatch_coro(ex, cont).resume(); | ||
| 280 | 22x | } | ||
| 281 | ||||
| 282 | inline void | |||
| 283 | ✗ | posix_resolver::resolve_op::destroy() | ||
| 284 | { | |||
| 285 | ✗ | stop_cb.reset(); | ||
| 286 | ✗ | } | ||
| 287 | ||||
| 288 | inline void | |||
| 289 | 48x | posix_resolver::resolve_op::request_cancel() noexcept | ||
| 290 | { | |||
| 291 | 48x | cancelled.store(true, std::memory_order_release); | ||
| 292 | 48x | } | ||
| 293 | ||||
| 294 | inline void | |||
| 295 | 22x | posix_resolver::resolve_op::start(std::stop_token const& token) | ||
| 296 | { | |||
| 297 | 22x | cancelled.store(false, std::memory_order_release); | ||
| 298 | 22x | stop_cb.reset(); | ||
| 299 | ||||
| 300 |
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22x | if (token.stop_possible()) | |
| 301 | 1x | stop_cb.emplace(token, canceller{this}); | ||
| 302 | 22x | } | ||
| 303 | ||||
| 304 | // posix_resolver::reverse_resolve_op implementation | |||
| 305 | ||||
| 306 | inline void | |||
| 307 | 12x | posix_resolver::reverse_resolve_op::reset() noexcept | ||
| 308 | { | |||
| 309 | 12x | ep = endpoint{}; | ||
| 310 | 12x | flags = reverse_flags::none; | ||
| 311 | 12x | stored_host.clear(); | ||
| 312 | 12x | stored_service.clear(); | ||
| 313 | 12x | gai_error = 0; | ||
| 314 | 12x | cancelled.store(false, std::memory_order_relaxed); | ||
| 315 | 12x | stop_cb.reset(); | ||
| 316 | 12x | ec_out = nullptr; | ||
| 317 | 12x | result_out = nullptr; | ||
| 318 | 12x | } | ||
| 319 | ||||
| 320 | inline void | |||
| 321 | 12x | posix_resolver::reverse_resolve_op::operator()() | ||
| 322 | { | |||
| 323 | 12x | stop_cb.reset(); // Disconnect stop callback | ||
| 324 | ||||
| 325 | 12x | bool const was_cancelled = cancelled.load(std::memory_order_acquire); | ||
| 326 | ||||
| 327 |
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12x | if (ec_out) | |
| 328 | { | |||
| 329 |
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12x | if (was_cancelled) | |
| 330 | 1x | *ec_out = capy::error::canceled; | ||
| 331 |
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11x | else if (gai_error != 0) | |
| 332 | 1x | *ec_out = posix_resolver_detail::make_gai_error(gai_error); | ||
| 333 | else | |||
| 334 | 10x | *ec_out = {}; // Clear on success | ||
| 335 | 12x | } | ||
| 336 | ||||
| 337 |
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12x | if (result_out && !was_cancelled && gai_error == 0) | |
| 338 | { | |||
| 339 |
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10x | *result_out = reverse_resolver_result( | |
| 340 | 10x | ep, std::move(stored_host), std::move(stored_service)); | ||
| 341 | 10x | } | ||
| 342 | ||||
| 343 | 12x | impl->svc_.work_finished(); | ||
| 344 | 12x | cont.h = h; | ||
| 345 | 12x | dispatch_coro(ex, cont).resume(); | ||
| 346 | 12x | } | ||
| 347 | ||||
| 348 | inline void | |||
| 349 | ✗ | posix_resolver::reverse_resolve_op::destroy() | ||
| 350 | { | |||
| 351 | ✗ | stop_cb.reset(); | ||
| 352 | ✗ | } | ||
| 353 | ||||
| 354 | inline void | |||
| 355 | 48x | posix_resolver::reverse_resolve_op::request_cancel() noexcept | ||
| 356 | { | |||
| 357 | 48x | cancelled.store(true, std::memory_order_release); | ||
| 358 | 48x | } | ||
| 359 | ||||
| 360 | inline void | |||
| 361 | 12x | posix_resolver::reverse_resolve_op::start(std::stop_token const& token) | ||
| 362 | { | |||
| 363 | 12x | cancelled.store(false, std::memory_order_release); | ||
| 364 | 12x | stop_cb.reset(); | ||
| 365 | ||||
| 366 |
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12x | if (token.stop_possible()) | |
| 367 | 1x | stop_cb.emplace(token, canceller{this}); | ||
| 368 | 12x | } | ||
| 369 | ||||
| 370 | // posix_resolver implementation | |||
| 371 | ||||
| 372 | inline std::coroutine_handle<> | |||
| 373 | 23x | posix_resolver::resolve( | ||
| 374 | std::coroutine_handle<> h, | |||
| 375 | capy::executor_ref ex, | |||
| 376 | std::string_view host, | |||
| 377 | std::string_view service, | |||
| 378 | resolve_flags flags, | |||
| 379 | std::stop_token token, | |||
| 380 | std::error_code* ec, | |||
| 381 | resolver_results* out) | |||
| 382 | { | |||
| 383 |
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23x | if (svc_.resolver_unavailable()) | |
| 384 | { | |||
| 385 | 1x | *ec = std::make_error_code(std::errc::operation_not_supported); | ||
| 386 | 1x | op_.cont.h = h; | ||
| 387 | 1x | return dispatch_coro(ex, op_.cont); | ||
| 388 | } | |||
| 389 | ||||
| 390 | 22x | auto& op = op_; | ||
| 391 | 22x | op.reset(); | ||
| 392 | 22x | op.h = h; | ||
| 393 | 22x | op.ex = ex; | ||
| 394 | 22x | op.impl = this; | ||
| 395 | 22x | op.ec_out = ec; | ||
| 396 | 22x | op.out = out; | ||
| 397 | 22x | op.host = host; | ||
| 398 | 22x | op.service = service; | ||
| 399 | 22x | op.flags = flags; | ||
| 400 | 22x | op.start(token); | ||
| 401 | ||||
| 402 | // Keep io_context alive while resolution is pending | |||
| 403 | 22x | op.ex.on_work_started(); | ||
| 404 | ||||
| 405 | // Prevent impl destruction while work is in flight | |||
| 406 | 22x | resolve_pool_op_.resolver_ = this; | ||
| 407 | 22x | resolve_pool_op_.ref_ = this->shared_from_this(); | ||
| 408 | 22x | resolve_pool_op_.func_ = &posix_resolver::do_resolve_work; | ||
| 409 |
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22x | if (!svc_.pool().post(&resolve_pool_op_)) | |
| 410 | { | |||
| 411 | // Pool shut down — complete with cancellation | |||
| 412 | ✗ | resolve_pool_op_.ref_.reset(); | ||
| 413 | ✗ | op.cancelled.store(true, std::memory_order_release); | ||
| 414 | ✗ | svc_.post(&op_); | ||
| 415 | ✗ | } | ||
| 416 | 22x | return std::noop_coroutine(); | ||
| 417 | 23x | } | ||
| 418 | ||||
| 419 | inline std::coroutine_handle<> | |||
| 420 | 13x | posix_resolver::reverse_resolve( | ||
| 421 | std::coroutine_handle<> h, | |||
| 422 | capy::executor_ref ex, | |||
| 423 | endpoint const& ep, | |||
| 424 | reverse_flags flags, | |||
| 425 | std::stop_token token, | |||
| 426 | std::error_code* ec, | |||
| 427 | reverse_resolver_result* result_out) | |||
| 428 | { | |||
| 429 |
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13x | if (svc_.resolver_unavailable()) | |
| 430 | { | |||
| 431 | 1x | *ec = std::make_error_code(std::errc::operation_not_supported); | ||
| 432 | 1x | reverse_op_.cont.h = h; | ||
| 433 | 1x | return dispatch_coro(ex, reverse_op_.cont); | ||
| 434 | } | |||
| 435 | ||||
| 436 | 12x | auto& op = reverse_op_; | ||
| 437 | 12x | op.reset(); | ||
| 438 | 12x | op.h = h; | ||
| 439 | 12x | op.ex = ex; | ||
| 440 | 12x | op.impl = this; | ||
| 441 | 12x | op.ec_out = ec; | ||
| 442 | 12x | op.result_out = result_out; | ||
| 443 | 12x | op.ep = ep; | ||
| 444 | 12x | op.flags = flags; | ||
| 445 | 12x | op.start(token); | ||
| 446 | ||||
| 447 | // Keep io_context alive while resolution is pending | |||
| 448 | 12x | op.ex.on_work_started(); | ||
| 449 | ||||
| 450 | // Prevent impl destruction while work is in flight | |||
| 451 | 12x | reverse_pool_op_.resolver_ = this; | ||
| 452 | 12x | reverse_pool_op_.ref_ = this->shared_from_this(); | ||
| 453 | 12x | reverse_pool_op_.func_ = &posix_resolver::do_reverse_resolve_work; | ||
| 454 |
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12x | if (!svc_.pool().post(&reverse_pool_op_)) | |
| 455 | { | |||
| 456 | // Pool shut down — complete with cancellation | |||
| 457 | ✗ | reverse_pool_op_.ref_.reset(); | ||
| 458 | ✗ | op.cancelled.store(true, std::memory_order_release); | ||
| 459 | ✗ | svc_.post(&reverse_op_); | ||
| 460 | ✗ | } | ||
| 461 | 12x | return std::noop_coroutine(); | ||
| 462 | 13x | } | ||
| 463 | ||||
| 464 | inline void | |||
| 465 | 47x | posix_resolver::cancel() noexcept | ||
| 466 | { | |||
| 467 | 47x | op_.request_cancel(); | ||
| 468 | 47x | reverse_op_.request_cancel(); | ||
| 469 | 47x | } | ||
| 470 | ||||
| 471 | inline void | |||
| 472 | 22x | posix_resolver::do_resolve_work(pool_work_item* w) noexcept | ||
| 473 | { | |||
| 474 | 22x | auto* pw = static_cast<pool_op*>(w); | ||
| 475 | 22x | auto* self = pw->resolver_; | ||
| 476 | ||||
| 477 | 22x | struct addrinfo hints{}; | ||
| 478 | 22x | hints.ai_family = AF_UNSPEC; | ||
| 479 | 22x | hints.ai_socktype = SOCK_STREAM; | ||
| 480 |
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22x | hints.ai_flags = posix_resolver_detail::flags_to_hints(self->op_.flags); | |
| 481 | ||||
| 482 | 22x | struct addrinfo* ai = nullptr; | ||
| 483 |
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22x | int result = ::getaddrinfo( | |
| 484 |
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22x | self->op_.host.empty() ? nullptr : self->op_.host.c_str(), | |
| 485 |
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22x | self->op_.service.empty() ? nullptr : self->op_.service.c_str(), &hints, | |
| 486 | &ai); | |||
| 487 | ||||
| 488 |
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22x | if (!self->op_.cancelled.load(std::memory_order_acquire)) | |
| 489 | { | |||
| 490 |
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21x | if (result == 0 && ai) | |
| 491 | { | |||
| 492 |
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17x | self->op_.stored_results = posix_resolver_detail::convert_results( | |
| 493 | 17x | ai, self->op_.host, self->op_.service); | ||
| 494 | 17x | self->op_.gai_error = 0; | ||
| 495 | 17x | } | ||
| 496 | else | |||
| 497 | { | |||
| 498 | 4x | self->op_.gai_error = result; | ||
| 499 | } | |||
| 500 | 21x | } | ||
| 501 | ||||
| 502 |
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22x | if (ai) | |
| 503 |
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18x | ::freeaddrinfo(ai); | |
| 504 | ||||
| 505 | // Move ref to stack before post — post may trigger destroy_impl | |||
| 506 | // which erases the last shared_ptr, destroying *self (and *pw) | |||
| 507 | 22x | auto ref = std::move(pw->ref_); | ||
| 508 |
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22x | self->svc_.post(&self->op_); | |
| 509 | 22x | } | ||
| 510 | ||||
| 511 | inline void | |||
| 512 | 12x | posix_resolver::do_reverse_resolve_work(pool_work_item* w) noexcept | ||
| 513 | { | |||
| 514 | 12x | auto* pw = static_cast<pool_op*>(w); | ||
| 515 | 12x | auto* self = pw->resolver_; | ||
| 516 | ||||
| 517 | 12x | sockaddr_storage ss{}; | ||
| 518 | socklen_t ss_len; | |||
| 519 | ||||
| 520 |
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12x | if (self->reverse_op_.ep.is_v4()) | |
| 521 | { | |||
| 522 | 10x | auto sa = to_sockaddr_in(self->reverse_op_.ep); | ||
| 523 | 10x | std::memcpy(&ss, &sa, sizeof(sa)); | ||
| 524 | 10x | ss_len = sizeof(sockaddr_in); | ||
| 525 | 10x | } | ||
| 526 | else | |||
| 527 | { | |||
| 528 | 2x | auto sa = to_sockaddr_in6(self->reverse_op_.ep); | ||
| 529 | 2x | std::memcpy(&ss, &sa, sizeof(sa)); | ||
| 530 | 2x | ss_len = sizeof(sockaddr_in6); | ||
| 531 | } | |||
| 532 | ||||
| 533 | char host[NI_MAXHOST]; | |||
| 534 | char service[NI_MAXSERV]; | |||
| 535 | ||||
| 536 |
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12x | int result = ::getnameinfo( | |
| 537 | 12x | reinterpret_cast<sockaddr*>(&ss), ss_len, host, sizeof(host), service, | ||
| 538 | sizeof(service), | |||
| 539 |
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12x | posix_resolver_detail::flags_to_ni_flags(self->reverse_op_.flags)); | |
| 540 | ||||
| 541 |
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12x | if (!self->reverse_op_.cancelled.load(std::memory_order_acquire)) | |
| 542 | { | |||
| 543 |
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11x | if (result == 0) | |
| 544 | { | |||
| 545 |
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10x | self->reverse_op_.stored_host = host; | |
| 546 |
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10x | self->reverse_op_.stored_service = service; | |
| 547 | 10x | self->reverse_op_.gai_error = 0; | ||
| 548 | 10x | } | ||
| 549 | else | |||
| 550 | { | |||
| 551 | 1x | self->reverse_op_.gai_error = result; | ||
| 552 | } | |||
| 553 | 11x | } | ||
| 554 | ||||
| 555 | // Move ref to stack before post — post may trigger destroy_impl | |||
| 556 | // which erases the last shared_ptr, destroying *self (and *pw) | |||
| 557 | 12x | auto ref = std::move(pw->ref_); | ||
| 558 |
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12x | self->svc_.post(&self->reverse_op_); | |
| 559 | 12x | } | ||
| 560 | ||||
| 561 | // posix_resolver_service implementation | |||
| 562 | ||||
| 563 | inline void | |||
| 564 | 1331x | posix_resolver_service::shutdown() | ||
| 565 | { | |||
| 566 | 1331x | std::lock_guard<std::mutex> lock(mutex_); | ||
| 567 | ||||
| 568 | // Cancel all resolvers (sets cancelled flag checked by pool threads) | |||
| 569 |
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1331x | for (auto* impl = resolver_list_.pop_front(); impl != nullptr; | |
| 570 | ✗ | impl = resolver_list_.pop_front()) | ||
| 571 | { | |||
| 572 | ✗ | impl->cancel(); | ||
| 573 | ✗ | } | ||
| 574 | ||||
| 575 | // Clear the map which releases shared_ptrs. | |||
| 576 | // The thread pool service shuts down separately via | |||
| 577 | // execution_context service ordering. | |||
| 578 | 1331x | resolver_ptrs_.clear(); | ||
| 579 | 1331x | } | ||
| 580 | ||||
| 581 | inline io_object::implementation* | |||
| 582 | 43x | posix_resolver_service::construct() | ||
| 583 | { | |||
| 584 | 43x | auto ptr = std::make_shared<posix_resolver>(*this); | ||
| 585 | 43x | auto* impl = ptr.get(); | ||
| 586 | ||||
| 587 | { | |||
| 588 |
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43x | std::lock_guard<std::mutex> lock(mutex_); | |
| 589 | 43x | resolver_list_.push_back(impl); | ||
| 590 |
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43x | resolver_ptrs_[impl] = std::move(ptr); | |
| 591 | 43x | } | ||
| 592 | ||||
| 593 | 43x | return impl; | ||
| 594 | 43x | } | ||
| 595 | ||||
| 596 | inline void | |||
| 597 | 43x | posix_resolver_service::destroy_impl(posix_resolver& impl) | ||
| 598 | { | |||
| 599 | 43x | std::lock_guard<std::mutex> lock(mutex_); | ||
| 600 | 43x | resolver_list_.remove(&impl); | ||
| 601 |
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43x | resolver_ptrs_.erase(&impl); | |
| 602 | 43x | } | ||
| 603 | ||||
| 604 | inline void | |||
| 605 | 34x | posix_resolver_service::post(scheduler_op* op) | ||
| 606 | { | |||
| 607 | 34x | sched_->post(op); | ||
| 608 | 34x | } | ||
| 609 | ||||
| 610 | inline void | |||
| 611 | posix_resolver_service::work_started() noexcept | |||
| 612 | { | |||
| 613 | sched_->work_started(); | |||
| 614 | } | |||
| 615 | ||||
| 616 | inline void | |||
| 617 | 34x | posix_resolver_service::work_finished() noexcept | ||
| 618 | { | |||
| 619 | 34x | sched_->work_finished(); | ||
| 620 | 34x | } | ||
| 621 | ||||
| 622 | // Free function to get/create the resolver service | |||
| 623 | ||||
| 624 | inline posix_resolver_service& | |||
| 625 | 1331x | get_resolver_service(capy::execution_context& ctx, scheduler& sched) | ||
| 626 | { | |||
| 627 | 1331x | return ctx.make_service<posix_resolver_service>(sched); | ||
| 628 | } | |||
| 629 | ||||
| 630 | } // namespace boost::corosio::detail | |||
| 631 | ||||
| 632 | #endif // BOOST_COROSIO_POSIX | |||
| 633 | ||||
| 634 | #endif // BOOST_COROSIO_NATIVE_DETAIL_POSIX_POSIX_RESOLVER_SERVICE_HPP | |||
| 635 |