src/corosio/src/io_context.cpp
50.8% Lines (30/59)
54.5% List of functions (6/11)
Functions (11)
Function
Calls
Lines
Blocks
boost::corosio::epoll_t::construct(boost::capy::execution_context&, unsigned int)
:63
355x
100.0%
100.0%
boost::corosio::select_t::construct(boost::capy::execution_context&, unsigned int)
:81
228x
100.0%
100.0%
boost::corosio::(anonymous namespace)::pre_create_services(boost::capy::execution_context&, boost::corosio::io_context_options const&)
:141
0
0.0%
0.0%
boost::corosio::(anonymous namespace)::apply_scheduler_options(boost::corosio::detail::scheduler&, boost::corosio::io_context_options const&)
:163
0
0.0%
0.0%
boost::corosio::(anonymous namespace)::construct_default(boost::capy::execution_context&, unsigned int)
:191
127x
100.0%
100.0%
boost::corosio::io_context::io_context()
:206
126x
100.0%
100.0%
boost::corosio::io_context::io_context(unsigned int)
:208
127x
100.0%
80.0%
boost::corosio::io_context::io_context(boost::corosio::io_context_options const&, unsigned int)
:214
0
0.0%
0.0%
boost::corosio::io_context::apply_options_pre_(boost::corosio::io_context_options const&)
:226
0
0.0%
0.0%
boost::corosio::io_context::apply_options_post_(boost::corosio::io_context_options const&)
:232
0
0.0%
0.0%
boost::corosio::io_context::~io_context()
:237
583x
100.0%
100.0%
| Line | 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 | #include <boost/corosio/io_context.hpp> | ||
| 12 | #include <boost/corosio/backend.hpp> | ||
| 13 | #include <boost/corosio/detail/thread_pool.hpp> | ||
| 14 | |||
| 15 | #include <stdexcept> | ||
| 16 | #include <thread> | ||
| 17 | |||
| 18 | #if BOOST_COROSIO_HAS_EPOLL | ||
| 19 | #include <boost/corosio/native/detail/epoll/epoll_scheduler.hpp> | ||
| 20 | #include <boost/corosio/native/detail/epoll/epoll_tcp_service.hpp> | ||
| 21 | #include <boost/corosio/native/detail/epoll/epoll_tcp_acceptor_service.hpp> | ||
| 22 | #include <boost/corosio/native/detail/epoll/epoll_udp_service.hpp> | ||
| 23 | #include <boost/corosio/native/detail/epoll/epoll_local_stream_service.hpp> | ||
| 24 | #include <boost/corosio/native/detail/epoll/epoll_local_stream_acceptor_service.hpp> | ||
| 25 | #include <boost/corosio/native/detail/epoll/epoll_local_datagram_service.hpp> | ||
| 26 | #endif | ||
| 27 | |||
| 28 | #if BOOST_COROSIO_HAS_SELECT | ||
| 29 | #include <boost/corosio/native/detail/select/select_scheduler.hpp> | ||
| 30 | #include <boost/corosio/native/detail/select/select_tcp_service.hpp> | ||
| 31 | #include <boost/corosio/native/detail/select/select_tcp_acceptor_service.hpp> | ||
| 32 | #include <boost/corosio/native/detail/select/select_udp_service.hpp> | ||
| 33 | #include <boost/corosio/native/detail/select/select_local_stream_service.hpp> | ||
| 34 | #include <boost/corosio/native/detail/select/select_local_stream_acceptor_service.hpp> | ||
| 35 | #include <boost/corosio/native/detail/select/select_local_datagram_service.hpp> | ||
| 36 | #endif | ||
| 37 | |||
| 38 | #if BOOST_COROSIO_HAS_KQUEUE | ||
| 39 | #include <boost/corosio/native/detail/kqueue/kqueue_scheduler.hpp> | ||
| 40 | #include <boost/corosio/native/detail/kqueue/kqueue_tcp_service.hpp> | ||
| 41 | #include <boost/corosio/native/detail/kqueue/kqueue_tcp_acceptor_service.hpp> | ||
| 42 | #include <boost/corosio/native/detail/kqueue/kqueue_udp_service.hpp> | ||
| 43 | #include <boost/corosio/native/detail/kqueue/kqueue_local_stream_service.hpp> | ||
| 44 | #include <boost/corosio/native/detail/kqueue/kqueue_local_stream_acceptor_service.hpp> | ||
| 45 | #include <boost/corosio/native/detail/kqueue/kqueue_local_datagram_service.hpp> | ||
| 46 | #endif | ||
| 47 | |||
| 48 | #if BOOST_COROSIO_HAS_IOCP | ||
| 49 | #include <boost/corosio/native/detail/iocp/win_scheduler.hpp> | ||
| 50 | #include <boost/corosio/native/detail/iocp/win_tcp_acceptor_service.hpp> | ||
| 51 | #include <boost/corosio/native/detail/iocp/win_udp_service.hpp> | ||
| 52 | #include <boost/corosio/native/detail/iocp/win_local_stream_acceptor_service.hpp> | ||
| 53 | #include <boost/corosio/native/detail/iocp/win_local_dgram_service.hpp> | ||
| 54 | #include <boost/corosio/native/detail/iocp/win_signals.hpp> | ||
| 55 | #include <boost/corosio/native/detail/iocp/win_file_service.hpp> | ||
| 56 | #include <boost/corosio/native/detail/iocp/win_random_access_file_service.hpp> | ||
| 57 | #endif | ||
| 58 | |||
| 59 | namespace boost::corosio { | ||
| 60 | |||
| 61 | #if BOOST_COROSIO_HAS_EPOLL | ||
| 62 | detail::scheduler& | ||
| 63 | 355x | epoll_t::construct(capy::execution_context& ctx, unsigned concurrency_hint) | |
| 64 | { | ||
| 65 | 710x | auto& sched = ctx.make_service<detail::epoll_scheduler>( | |
| 66 | 355x | static_cast<int>(concurrency_hint)); | |
| 67 | |||
| 68 | 355x | ctx.make_service<detail::epoll_tcp_service>(); | |
| 69 | 355x | ctx.make_service<detail::epoll_tcp_acceptor_service>(); | |
| 70 | 355x | ctx.make_service<detail::epoll_udp_service>(); | |
| 71 | 355x | ctx.make_service<detail::epoll_local_stream_service>(); | |
| 72 | 355x | ctx.make_service<detail::epoll_local_stream_acceptor_service>(); | |
| 73 | 355x | ctx.make_service<detail::epoll_local_datagram_service>(); | |
| 74 | |||
| 75 | 355x | return sched; | |
| 76 | } | ||
| 77 | #endif | ||
| 78 | |||
| 79 | #if BOOST_COROSIO_HAS_SELECT | ||
| 80 | detail::scheduler& | ||
| 81 | 228x | select_t::construct(capy::execution_context& ctx, unsigned concurrency_hint) | |
| 82 | { | ||
| 83 | 456x | auto& sched = ctx.make_service<detail::select_scheduler>( | |
| 84 | 228x | static_cast<int>(concurrency_hint)); | |
| 85 | |||
| 86 | 228x | ctx.make_service<detail::select_tcp_service>(); | |
| 87 | 228x | ctx.make_service<detail::select_tcp_acceptor_service>(); | |
| 88 | 228x | ctx.make_service<detail::select_udp_service>(); | |
| 89 | 228x | ctx.make_service<detail::select_local_stream_service>(); | |
| 90 | 228x | ctx.make_service<detail::select_local_stream_acceptor_service>(); | |
| 91 | 228x | ctx.make_service<detail::select_local_datagram_service>(); | |
| 92 | |||
| 93 | 228x | return sched; | |
| 94 | } | ||
| 95 | #endif | ||
| 96 | |||
| 97 | #if BOOST_COROSIO_HAS_KQUEUE | ||
| 98 | detail::scheduler& | ||
| 99 | kqueue_t::construct(capy::execution_context& ctx, unsigned concurrency_hint) | ||
| 100 | { | ||
| 101 | auto& sched = ctx.make_service<detail::kqueue_scheduler>( | ||
| 102 | static_cast<int>(concurrency_hint)); | ||
| 103 | |||
| 104 | ctx.make_service<detail::kqueue_tcp_service>(); | ||
| 105 | ctx.make_service<detail::kqueue_tcp_acceptor_service>(); | ||
| 106 | ctx.make_service<detail::kqueue_udp_service>(); | ||
| 107 | ctx.make_service<detail::kqueue_local_stream_service>(); | ||
| 108 | ctx.make_service<detail::kqueue_local_stream_acceptor_service>(); | ||
| 109 | ctx.make_service<detail::kqueue_local_datagram_service>(); | ||
| 110 | |||
| 111 | return sched; | ||
| 112 | } | ||
| 113 | #endif | ||
| 114 | |||
| 115 | #if BOOST_COROSIO_HAS_IOCP | ||
| 116 | detail::scheduler& | ||
| 117 | iocp_t::construct(capy::execution_context& ctx, unsigned concurrency_hint) | ||
| 118 | { | ||
| 119 | auto& sched = ctx.make_service<detail::win_scheduler>( | ||
| 120 | static_cast<int>(concurrency_hint)); | ||
| 121 | |||
| 122 | auto& tcp_svc = ctx.make_service<detail::win_tcp_service>(); | ||
| 123 | ctx.make_service<detail::win_tcp_acceptor_service>(tcp_svc); | ||
| 124 | ctx.make_service<detail::win_udp_service>(); | ||
| 125 | auto& local_svc = | ||
| 126 | ctx.make_service<detail::win_local_stream_service>(tcp_svc); | ||
| 127 | ctx.make_service<detail::win_local_stream_acceptor_service>(local_svc); | ||
| 128 | ctx.make_service<detail::win_local_dgram_service>(); | ||
| 129 | ctx.make_service<detail::win_signals>(); | ||
| 130 | ctx.make_service<detail::win_file_service>(); | ||
| 131 | ctx.make_service<detail::win_random_access_file_service>(); | ||
| 132 | |||
| 133 | return sched; | ||
| 134 | } | ||
| 135 | #endif | ||
| 136 | |||
| 137 | namespace { | ||
| 138 | |||
| 139 | // Pre-create services that must exist before construct() runs. | ||
| 140 | void | ||
| 141 | ✗ | pre_create_services( | |
| 142 | capy::execution_context& ctx, | ||
| 143 | io_context_options const& opts) | ||
| 144 | { | ||
| 145 | #if BOOST_COROSIO_POSIX | ||
| 146 | ✗ | if (opts.thread_pool_size < 1) | |
| 147 | throw std::invalid_argument( | ||
| 148 | ✗ | "thread_pool_size must be at least 1"); | |
| 149 | // Pre-create the shared thread pool with the configured size. | ||
| 150 | // This must happen before construct() because the scheduler | ||
| 151 | // constructor creates file and resolver services that call | ||
| 152 | // get_or_create_pool(), which would create a 1-thread pool. | ||
| 153 | ✗ | if (opts.thread_pool_size != 1) | |
| 154 | ✗ | ctx.make_service<detail::thread_pool>(opts.thread_pool_size); | |
| 155 | #endif | ||
| 156 | |||
| 157 | (void)ctx; | ||
| 158 | (void)opts; | ||
| 159 | ✗ | } | |
| 160 | |||
| 161 | // Apply runtime tuning to the scheduler after construction. | ||
| 162 | void | ||
| 163 | ✗ | apply_scheduler_options( | |
| 164 | detail::scheduler& sched, | ||
| 165 | io_context_options const& opts) | ||
| 166 | { | ||
| 167 | #if BOOST_COROSIO_HAS_EPOLL || BOOST_COROSIO_HAS_KQUEUE || BOOST_COROSIO_HAS_SELECT | ||
| 168 | ✗ | auto& reactor = | |
| 169 | static_cast<detail::reactor_scheduler&>(sched); | ||
| 170 | ✗ | reactor.configure_reactor( | |
| 171 | ✗ | opts.max_events_per_poll, | |
| 172 | ✗ | opts.inline_budget_initial, | |
| 173 | ✗ | opts.inline_budget_max, | |
| 174 | ✗ | opts.unassisted_budget); | |
| 175 | ✗ | if (opts.single_threaded) | |
| 176 | ✗ | reactor.configure_single_threaded(true); | |
| 177 | #endif | ||
| 178 | |||
| 179 | #if BOOST_COROSIO_HAS_IOCP | ||
| 180 | auto& iocp_sched = static_cast<detail::win_scheduler&>(sched); | ||
| 181 | iocp_sched.configure_iocp(opts.gqcs_timeout_ms); | ||
| 182 | if (opts.single_threaded) | ||
| 183 | iocp_sched.configure_single_threaded(true); | ||
| 184 | #endif | ||
| 185 | |||
| 186 | (void)sched; | ||
| 187 | (void)opts; | ||
| 188 | ✗ | } | |
| 189 | |||
| 190 | detail::scheduler& | ||
| 191 | 127x | construct_default(capy::execution_context& ctx, unsigned concurrency_hint) | |
| 192 | { | ||
| 193 | #if BOOST_COROSIO_HAS_IOCP | ||
| 194 | return iocp_t::construct(ctx, concurrency_hint); | ||
| 195 | #elif BOOST_COROSIO_HAS_EPOLL | ||
| 196 | 127x | return epoll_t::construct(ctx, concurrency_hint); | |
| 197 | #elif BOOST_COROSIO_HAS_KQUEUE | ||
| 198 | return kqueue_t::construct(ctx, concurrency_hint); | ||
| 199 | #elif BOOST_COROSIO_HAS_SELECT | ||
| 200 | return select_t::construct(ctx, concurrency_hint); | ||
| 201 | #endif | ||
| 202 | } | ||
| 203 | |||
| 204 | } // anonymous namespace | ||
| 205 | |||
| 206 | 126x | io_context::io_context() : io_context(std::thread::hardware_concurrency()) {} | |
| 207 | |||
| 208 | 127x | io_context::io_context(unsigned concurrency_hint) | |
| 209 | : capy::execution_context(this) | ||
| 210 | 127x | , sched_(&construct_default(*this, concurrency_hint)) | |
| 211 | { | ||
| 212 | 127x | } | |
| 213 | |||
| 214 | ✗ | io_context::io_context( | |
| 215 | io_context_options const& opts, | ||
| 216 | ✗ | unsigned concurrency_hint) | |
| 217 | : capy::execution_context(this) | ||
| 218 | ✗ | , sched_(nullptr) | |
| 219 | { | ||
| 220 | ✗ | pre_create_services(*this, opts); | |
| 221 | ✗ | sched_ = &construct_default(*this, concurrency_hint); | |
| 222 | ✗ | apply_scheduler_options(*sched_, opts); | |
| 223 | ✗ | } | |
| 224 | |||
| 225 | void | ||
| 226 | ✗ | io_context::apply_options_pre_(io_context_options const& opts) | |
| 227 | { | ||
| 228 | ✗ | pre_create_services(*this, opts); | |
| 229 | ✗ | } | |
| 230 | |||
| 231 | void | ||
| 232 | ✗ | io_context::apply_options_post_(io_context_options const& opts) | |
| 233 | { | ||
| 234 | ✗ | apply_scheduler_options(*sched_, opts); | |
| 235 | ✗ | } | |
| 236 | |||
| 237 | 583x | io_context::~io_context() | |
| 238 | { | ||
| 239 | 583x | shutdown(); | |
| 240 | 583x | destroy(); | |
| 241 | 583x | } | |
| 242 | |||
| 243 | } // namespace boost::corosio | ||
| 244 |