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| <section id='main' class="content"><pre class="line-numbers"><span id="1"> 1</span> |
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| <span id="183">183</span> |
| <span id="184">184</span> |
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| <span id="190">190</span> |
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| <span id="296">296</span> |
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| <span id="425">425</span> |
| <span id="426">426</span> |
| <span id="427">427</span> |
| <span id="428">428</span> |
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| <span id="932">932</span> |
| <span id="933">933</span> |
| </pre><pre class="rust "> |
| <span class="doccomment">//! The core reactor driving all I/O</span> |
| <span class="doccomment">//!</span> |
| <span class="doccomment">//! This module contains the `Core` type which is the reactor for all I/O</span> |
| <span class="doccomment">//! happening in `tokio-core`. This reactor (or event loop) is used to run</span> |
| <span class="doccomment">//! futures, schedule tasks, issue I/O requests, etc.</span> |
| |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">cell</span>::<span class="ident">RefCell</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">cmp</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fmt</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::{<span class="self">self</span>, <span class="ident">ErrorKind</span>}; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">mem</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::{<span class="ident">Rc</span>, <span class="ident">Weak</span>}; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">Arc</span>; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">sync</span>::<span class="ident">atomic</span>::{<span class="ident">AtomicUsize</span>, <span class="ident">ATOMIC_USIZE_INIT</span>, <span class="ident">Ordering</span>}; |
| <span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::{<span class="ident">Instant</span>, <span class="ident">Duration</span>}; |
| |
| <span class="kw">use</span> <span class="ident">futures</span>::{<span class="ident">Future</span>, <span class="ident">IntoFuture</span>, <span class="ident">Async</span>}; |
| <span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">future</span>::{<span class="self">self</span>, <span class="ident">Executor</span>, <span class="ident">ExecuteError</span>}; |
| <span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">executor</span>::{<span class="self">self</span>, <span class="ident">Spawn</span>, <span class="ident">Notify</span>}; |
| <span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">sync</span>::<span class="ident">mpsc</span>; |
| <span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">task</span>::<span class="ident">Task</span>; |
| <span class="kw">use</span> <span class="ident">mio</span>; |
| <span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">event</span>::<span class="ident">Evented</span>; |
| <span class="kw">use</span> <span class="ident">slab</span>::<span class="ident">Slab</span>; |
| |
| <span class="kw">use</span> <span class="ident">heap</span>::{<span class="ident">Heap</span>, <span class="ident">Slot</span>}; |
| |
| <span class="kw">mod</span> <span class="ident">io_token</span>; |
| <span class="kw">mod</span> <span class="ident">timeout_token</span>; |
| |
| <span class="kw">mod</span> <span class="ident">poll_evented</span>; |
| <span class="kw">mod</span> <span class="ident">timeout</span>; |
| <span class="kw">mod</span> <span class="ident">interval</span>; |
| <span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">poll_evented</span>::<span class="ident">PollEvented</span>; |
| <span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">timeout</span>::<span class="ident">Timeout</span>; |
| <span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span>::<span class="ident">interval</span>::<span class="ident">Interval</span>; |
| |
| <span class="kw">static</span> <span class="ident">NEXT_LOOP_ID</span>: <span class="ident">AtomicUsize</span> <span class="op">=</span> <span class="ident">ATOMIC_USIZE_INIT</span>; |
| <span class="macro">scoped_thread_local</span><span class="macro">!</span>(<span class="kw">static</span> <span class="ident">CURRENT_LOOP</span>: <span class="ident">Core</span>); |
| |
| <span class="doccomment">/// An event loop.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The event loop is the main source of blocking in an application which drives</span> |
| <span class="doccomment">/// all other I/O events and notifications happening. Each event loop can have</span> |
| <span class="doccomment">/// multiple handles pointing to it, each of which can then be used to create</span> |
| <span class="doccomment">/// various I/O objects to interact with the event loop in interesting ways.</span> |
| <span class="comment">// TODO: expand this</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Core</span> { |
| <span class="ident">events</span>: <span class="ident">mio</span>::<span class="ident">Events</span>, |
| <span class="ident">tx</span>: <span class="ident">mpsc</span>::<span class="ident">UnboundedSender</span><span class="op"><</span><span class="ident">Message</span><span class="op">></span>, |
| <span class="ident">rx</span>: <span class="ident">RefCell</span><span class="op"><</span><span class="ident">Spawn</span><span class="op"><</span><span class="ident">mpsc</span>::<span class="ident">UnboundedReceiver</span><span class="op"><</span><span class="ident">Message</span><span class="op">>></span><span class="op">></span>, |
| <span class="ident">_rx_registration</span>: <span class="ident">mio</span>::<span class="ident">Registration</span>, |
| <span class="ident">rx_readiness</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">MySetReadiness</span><span class="op">></span>, |
| |
| <span class="ident">inner</span>: <span class="ident">Rc</span><span class="op"><</span><span class="ident">RefCell</span><span class="op"><</span><span class="ident">Inner</span><span class="op">>></span>, |
| |
| <span class="comment">// Used for determining when the future passed to `run` is ready. Once the</span> |
| <span class="comment">// registration is passed to `io` above we never touch it again, just keep</span> |
| <span class="comment">// it alive.</span> |
| <span class="ident">_future_registration</span>: <span class="ident">mio</span>::<span class="ident">Registration</span>, |
| <span class="ident">future_readiness</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">MySetReadiness</span><span class="op">></span>, |
| } |
| |
| <span class="kw">struct</span> <span class="ident">Inner</span> { |
| <span class="ident">id</span>: <span class="ident">usize</span>, |
| <span class="ident">io</span>: <span class="ident">mio</span>::<span class="ident">Poll</span>, |
| |
| <span class="comment">// Dispatch slabs for I/O and futures events</span> |
| <span class="ident">io_dispatch</span>: <span class="ident">Slab</span><span class="op"><</span><span class="ident">ScheduledIo</span><span class="op">></span>, |
| <span class="ident">task_dispatch</span>: <span class="ident">Slab</span><span class="op"><</span><span class="ident">ScheduledTask</span><span class="op">></span>, |
| |
| <span class="comment">// Timer wheel keeping track of all timeouts. The `usize` stored in the</span> |
| <span class="comment">// timer wheel is an index into the slab below.</span> |
| <span class="comment">//</span> |
| <span class="comment">// The slab below keeps track of the timeouts themselves as well as the</span> |
| <span class="comment">// state of the timeout itself. The `TimeoutToken` type is an index into the</span> |
| <span class="comment">// `timeouts` slab.</span> |
| <span class="ident">timer_heap</span>: <span class="ident">Heap</span><span class="op"><</span>(<span class="ident">Instant</span>, <span class="ident">usize</span>)<span class="op">></span>, |
| <span class="ident">timeouts</span>: <span class="ident">Slab</span><span class="op"><</span>(<span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Slot</span><span class="op">></span>, <span class="ident">TimeoutState</span>)<span class="op">></span>, |
| } |
| |
| <span class="doccomment">/// An unique ID for a Core</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// An ID by which different cores may be distinguished. Can be compared and used as an index in</span> |
| <span class="doccomment">/// a `HashMap`.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// The ID is globally unique and never reused.</span> |
| <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>,<span class="ident">Copy</span>,<span class="ident">Eq</span>,<span class="ident">PartialEq</span>,<span class="ident">Hash</span>,<span class="ident">Debug</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">CoreId</span>(<span class="ident">usize</span>); |
| |
| <span class="doccomment">/// Handle to an event loop, used to construct I/O objects, send messages, and</span> |
| <span class="doccomment">/// otherwise interact indirectly with the event loop itself.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Handles can be cloned, and when cloned they will still refer to the</span> |
| <span class="doccomment">/// same underlying event loop.</span> |
| <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Remote</span> { |
| <span class="ident">id</span>: <span class="ident">usize</span>, |
| <span class="ident">tx</span>: <span class="ident">mpsc</span>::<span class="ident">UnboundedSender</span><span class="op"><</span><span class="ident">Message</span><span class="op">></span>, |
| } |
| |
| <span class="doccomment">/// A non-sendable handle to an event loop, useful for manufacturing instances</span> |
| <span class="doccomment">/// of `LoopData`.</span> |
| <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>)]</span> |
| <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Handle</span> { |
| <span class="ident">remote</span>: <span class="ident">Remote</span>, |
| <span class="ident">inner</span>: <span class="ident">Weak</span><span class="op"><</span><span class="ident">RefCell</span><span class="op"><</span><span class="ident">Inner</span><span class="op">>></span>, |
| } |
| |
| <span class="kw">struct</span> <span class="ident">ScheduledIo</span> { |
| <span class="ident">readiness</span>: <span class="ident">Arc</span><span class="op"><</span><span class="ident">AtomicUsize</span><span class="op">></span>, |
| <span class="ident">reader</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Task</span><span class="op">></span>, |
| <span class="ident">writer</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Task</span><span class="op">></span>, |
| } |
| |
| <span class="kw">struct</span> <span class="ident">ScheduledTask</span> { |
| <span class="ident">_registration</span>: <span class="ident">mio</span>::<span class="ident">Registration</span>, |
| <span class="ident">spawn</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Spawn</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span><span class="op">=</span>(), <span class="ident">Error</span><span class="op">=</span>()<span class="op">>></span><span class="op">>></span>, |
| <span class="ident">wake</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Arc</span><span class="op"><</span><span class="ident">MySetReadiness</span><span class="op">>></span>, |
| } |
| |
| <span class="kw">enum</span> <span class="ident">TimeoutState</span> { |
| <span class="ident">NotFired</span>, |
| <span class="ident">Fired</span>, |
| <span class="ident">Waiting</span>(<span class="ident">Task</span>), |
| } |
| |
| <span class="kw">enum</span> <span class="ident">Direction</span> { |
| <span class="ident">Read</span>, |
| <span class="ident">Write</span>, |
| } |
| |
| <span class="kw">enum</span> <span class="ident">Message</span> { |
| <span class="ident">DropSource</span>(<span class="ident">usize</span>), |
| <span class="ident">Schedule</span>(<span class="ident">usize</span>, <span class="ident">Task</span>, <span class="ident">Direction</span>), |
| <span class="ident">UpdateTimeout</span>(<span class="ident">usize</span>, <span class="ident">Task</span>), |
| <span class="ident">ResetTimeout</span>(<span class="ident">usize</span>, <span class="ident">Instant</span>), |
| <span class="ident">CancelTimeout</span>(<span class="ident">usize</span>), |
| <span class="ident">Run</span>(<span class="ident">Box</span><span class="op"><</span><span class="ident">FnBox</span><span class="op">></span>), |
| } |
| |
| <span class="kw">const</span> <span class="ident">TOKEN_MESSAGES</span>: <span class="ident">mio</span>::<span class="ident">Token</span> <span class="op">=</span> <span class="ident">mio</span>::<span class="ident">Token</span>(<span class="number">0</span>); |
| <span class="kw">const</span> <span class="ident">TOKEN_FUTURE</span>: <span class="ident">mio</span>::<span class="ident">Token</span> <span class="op">=</span> <span class="ident">mio</span>::<span class="ident">Token</span>(<span class="number">1</span>); |
| <span class="kw">const</span> <span class="ident">TOKEN_START</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="number">2</span>; |
| |
| <span class="kw">impl</span> <span class="ident">Core</span> { |
| <span class="doccomment">/// Creates a new event loop, returning any error that happened during the</span> |
| <span class="doccomment">/// creation.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Core</span><span class="op">></span> { |
| <span class="kw">let</span> <span class="ident">io</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">mio</span>::<span class="ident">Poll</span>::<span class="ident">new</span>()); |
| <span class="kw">let</span> <span class="ident">future_pair</span> <span class="op">=</span> <span class="ident">mio</span>::<span class="ident">Registration</span>::<span class="ident">new2</span>(); |
| <span class="macro">try</span><span class="macro">!</span>(<span class="ident">io</span>.<span class="ident">register</span>(<span class="kw-2">&</span><span class="ident">future_pair</span>.<span class="number">0</span>, |
| <span class="ident">TOKEN_FUTURE</span>, |
| <span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">readable</span>(), |
| <span class="ident">mio</span>::<span class="ident">PollOpt</span>::<span class="ident">level</span>())); |
| <span class="kw">let</span> (<span class="ident">tx</span>, <span class="ident">rx</span>) <span class="op">=</span> <span class="ident">mpsc</span>::<span class="ident">unbounded</span>(); |
| <span class="kw">let</span> <span class="ident">channel_pair</span> <span class="op">=</span> <span class="ident">mio</span>::<span class="ident">Registration</span>::<span class="ident">new2</span>(); |
| <span class="macro">try</span><span class="macro">!</span>(<span class="ident">io</span>.<span class="ident">register</span>(<span class="kw-2">&</span><span class="ident">channel_pair</span>.<span class="number">0</span>, |
| <span class="ident">TOKEN_MESSAGES</span>, |
| <span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">readable</span>(), |
| <span class="ident">mio</span>::<span class="ident">PollOpt</span>::<span class="ident">level</span>())); |
| <span class="kw">let</span> <span class="ident">rx_readiness</span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="ident">MySetReadiness</span>(<span class="ident">channel_pair</span>.<span class="number">1</span>)); |
| <span class="ident">rx_readiness</span>.<span class="ident">notify</span>(<span class="number">0</span>); |
| |
| <span class="prelude-val">Ok</span>(<span class="ident">Core</span> { |
| <span class="ident">events</span>: <span class="ident">mio</span>::<span class="ident">Events</span>::<span class="ident">with_capacity</span>(<span class="number">1024</span>), |
| <span class="ident">tx</span>: <span class="ident">tx</span>, |
| <span class="ident">rx</span>: <span class="ident">RefCell</span>::<span class="ident">new</span>(<span class="ident">executor</span>::<span class="ident">spawn</span>(<span class="ident">rx</span>)), |
| <span class="ident">_rx_registration</span>: <span class="ident">channel_pair</span>.<span class="number">0</span>, |
| <span class="ident">rx_readiness</span>: <span class="ident">rx_readiness</span>, |
| |
| <span class="ident">_future_registration</span>: <span class="ident">future_pair</span>.<span class="number">0</span>, |
| <span class="ident">future_readiness</span>: <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="ident">MySetReadiness</span>(<span class="ident">future_pair</span>.<span class="number">1</span>)), |
| |
| <span class="ident">inner</span>: <span class="ident">Rc</span>::<span class="ident">new</span>(<span class="ident">RefCell</span>::<span class="ident">new</span>(<span class="ident">Inner</span> { |
| <span class="ident">id</span>: <span class="ident">NEXT_LOOP_ID</span>.<span class="ident">fetch_add</span>(<span class="number">1</span>, <span class="ident">Ordering</span>::<span class="ident">Relaxed</span>), |
| <span class="ident">io</span>: <span class="ident">io</span>, |
| <span class="ident">io_dispatch</span>: <span class="ident">Slab</span>::<span class="ident">with_capacity</span>(<span class="number">1</span>), |
| <span class="ident">task_dispatch</span>: <span class="ident">Slab</span>::<span class="ident">with_capacity</span>(<span class="number">1</span>), |
| <span class="ident">timeouts</span>: <span class="ident">Slab</span>::<span class="ident">with_capacity</span>(<span class="number">1</span>), |
| <span class="ident">timer_heap</span>: <span class="ident">Heap</span>::<span class="ident">new</span>(), |
| })), |
| }) |
| } |
| |
| <span class="doccomment">/// Returns a handle to this event loop which cannot be sent across threads</span> |
| <span class="doccomment">/// but can be used as a proxy to the event loop itself.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Handles are cloneable and clones always refer to the same event loop.</span> |
| <span class="doccomment">/// This handle is typically passed into functions that create I/O objects</span> |
| <span class="doccomment">/// to bind them to this event loop.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">handle</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Handle</span> { |
| <span class="ident">Handle</span> { |
| <span class="ident">remote</span>: <span class="self">self</span>.<span class="ident">remote</span>(), |
| <span class="ident">inner</span>: <span class="ident">Rc</span>::<span class="ident">downgrade</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>), |
| } |
| } |
| |
| <span class="doccomment">/// Generates a remote handle to this event loop which can be used to spawn</span> |
| <span class="doccomment">/// tasks from other threads into this event loop.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">remote</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">Remote</span> { |
| <span class="ident">Remote</span> { |
| <span class="ident">id</span>: <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow</span>().<span class="ident">id</span>, |
| <span class="ident">tx</span>: <span class="self">self</span>.<span class="ident">tx</span>.<span class="ident">clone</span>(), |
| } |
| } |
| |
| <span class="doccomment">/// Runs a future until completion, driving the event loop while we're</span> |
| <span class="doccomment">/// otherwise waiting for the future to complete.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This function will begin executing the event loop and will finish once</span> |
| <span class="doccomment">/// the provided future is resolved. Note that the future argument here</span> |
| <span class="doccomment">/// crucially does not require the `'static` nor `Send` bounds. As a result</span> |
| <span class="doccomment">/// the future will be "pinned" to not only this thread but also this stack</span> |
| <span class="doccomment">/// frame.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This function will return the value that the future resolves to once</span> |
| <span class="doccomment">/// the future has finished. If the future never resolves then this function</span> |
| <span class="doccomment">/// will never return.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Panics</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This method will **not** catch panics from polling the future `f`. If</span> |
| <span class="doccomment">/// the future panics then it's the responsibility of the caller to catch</span> |
| <span class="doccomment">/// that panic and handle it as appropriate.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">run</span><span class="op"><</span><span class="ident">F</span><span class="op">></span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">f</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">F</span>::<span class="ident">Item</span>, <span class="ident">F</span>::<span class="ident">Error</span><span class="op">></span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">Future</span>, |
| { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">task</span> <span class="op">=</span> <span class="ident">executor</span>::<span class="ident">spawn</span>(<span class="ident">f</span>); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">future_fired</span> <span class="op">=</span> <span class="bool-val">true</span>; |
| |
| <span class="kw">loop</span> { |
| <span class="kw">if</span> <span class="ident">future_fired</span> { |
| <span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="macro">try</span><span class="macro">!</span>(<span class="ident">CURRENT_LOOP</span>.<span class="ident">set</span>(<span class="self">self</span>, <span class="op">||</span> { |
| <span class="ident">task</span>.<span class="ident">poll_future_notify</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">future_readiness</span>, <span class="number">0</span>) |
| })); |
| <span class="kw">if</span> <span class="kw">let</span> <span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="ident">e</span>) <span class="op">=</span> <span class="ident">res</span> { |
| <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">e</span>) |
| } |
| } |
| <span class="ident">future_fired</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">poll</span>(<span class="prelude-val">None</span>); |
| } |
| } |
| |
| <span class="doccomment">/// Performs one iteration of the event loop, blocking on waiting for events</span> |
| <span class="doccomment">/// for at most `max_wait` (forever if `None`).</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// It only makes sense to call this method if you've previously spawned</span> |
| <span class="doccomment">/// a future onto this event loop.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// `loop { lp.turn(None) }` is equivalent to calling `run` with an</span> |
| <span class="doccomment">/// empty future (one that never finishes).</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">turn</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">max_wait</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Duration</span><span class="op">></span>) { |
| <span class="self">self</span>.<span class="ident">poll</span>(<span class="ident">max_wait</span>); |
| } |
| |
| <span class="kw">fn</span> <span class="ident">poll</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">max_wait</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Duration</span><span class="op">></span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="comment">// Given the `max_wait` variable specified, figure out the actual</span> |
| <span class="comment">// timeout that we're going to pass to `poll`. This involves taking a</span> |
| <span class="comment">// look at active timers on our heap as well.</span> |
| <span class="kw">let</span> <span class="ident">start</span> <span class="op">=</span> <span class="ident">Instant</span>::<span class="ident">now</span>(); |
| <span class="kw">let</span> <span class="ident">timeout</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>().<span class="ident">timer_heap</span>.<span class="ident">peek</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">t</span><span class="op">|</span> { |
| <span class="kw">if</span> <span class="ident">t</span>.<span class="number">0</span> <span class="op"><</span> <span class="ident">start</span> { |
| <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>) |
| } <span class="kw">else</span> { |
| <span class="ident">t</span>.<span class="number">0</span> <span class="op">-</span> <span class="ident">start</span> |
| } |
| }); |
| <span class="kw">let</span> <span class="ident">timeout</span> <span class="op">=</span> <span class="kw">match</span> (<span class="ident">max_wait</span>, <span class="ident">timeout</span>) { |
| (<span class="prelude-val">Some</span>(<span class="ident">d1</span>), <span class="prelude-val">Some</span>(<span class="ident">d2</span>)) <span class="op">=></span> <span class="prelude-val">Some</span>(<span class="ident">cmp</span>::<span class="ident">min</span>(<span class="ident">d1</span>, <span class="ident">d2</span>)), |
| (<span class="ident">max_wait</span>, <span class="ident">timeout</span>) <span class="op">=></span> <span class="ident">max_wait</span>.<span class="ident">or</span>(<span class="ident">timeout</span>), |
| }; |
| |
| <span class="comment">// Block waiting for an event to happen, peeling out how many events</span> |
| <span class="comment">// happened.</span> |
| <span class="kw">let</span> <span class="ident">amt</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>().<span class="ident">io</span>.<span class="ident">poll</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">events</span>, <span class="ident">timeout</span>) { |
| <span class="prelude-val">Ok</span>(<span class="ident">a</span>) <span class="op">=></span> <span class="ident">a</span>, |
| <span class="prelude-val">Err</span>(<span class="kw-2">ref</span> <span class="ident">e</span>) <span class="kw">if</span> <span class="ident">e</span>.<span class="ident">kind</span>() <span class="op">==</span> <span class="ident">ErrorKind</span>::<span class="ident">Interrupted</span> <span class="op">=></span> <span class="kw">return</span> <span class="bool-val">false</span>, |
| <span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"error in poll: {}"</span>, <span class="ident">e</span>), |
| }; |
| |
| <span class="kw">let</span> <span class="ident">after_poll</span> <span class="op">=</span> <span class="ident">Instant</span>::<span class="ident">now</span>(); |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"loop poll - {:?}"</span>, <span class="ident">after_poll</span> <span class="op">-</span> <span class="ident">start</span>); |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"loop time - {:?}"</span>, <span class="ident">after_poll</span>); |
| |
| <span class="comment">// Process all timeouts that may have just occurred, updating the</span> |
| <span class="comment">// current time since</span> |
| <span class="self">self</span>.<span class="ident">consume_timeouts</span>(<span class="ident">after_poll</span>); |
| |
| <span class="comment">// Process all the events that came in, dispatching appropriately</span> |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">fired</span> <span class="op">=</span> <span class="bool-val">false</span>; |
| <span class="kw">for</span> <span class="ident">event</span> <span class="kw">in</span> <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">events</span> { |
| <span class="kw">let</span> <span class="ident">token</span> <span class="op">=</span> <span class="ident">event</span>.<span class="ident">token</span>(); |
| <span class="macro">trace</span><span class="macro">!</span>(<span class="string">"event {:?} {:?}"</span>, <span class="ident">event</span>.<span class="ident">readiness</span>(), <span class="ident">event</span>.<span class="ident">token</span>()); |
| |
| <span class="kw">if</span> <span class="ident">token</span> <span class="op">==</span> <span class="ident">TOKEN_MESSAGES</span> { |
| <span class="self">self</span>.<span class="ident">rx_readiness</span>.<span class="number">0</span>.<span class="ident">set_readiness</span>(<span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">empty</span>()).<span class="ident">unwrap</span>(); |
| <span class="ident">CURRENT_LOOP</span>.<span class="ident">set</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="op">||</span> <span class="self">self</span>.<span class="ident">consume_queue</span>()); |
| } <span class="kw">else</span> <span class="kw">if</span> <span class="ident">token</span> <span class="op">==</span> <span class="ident">TOKEN_FUTURE</span> { |
| <span class="self">self</span>.<span class="ident">future_readiness</span>.<span class="number">0</span>.<span class="ident">set_readiness</span>(<span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">empty</span>()).<span class="ident">unwrap</span>(); |
| <span class="ident">fired</span> <span class="op">=</span> <span class="bool-val">true</span>; |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">dispatch</span>(<span class="ident">token</span>, <span class="ident">event</span>.<span class="ident">readiness</span>()); |
| } |
| } |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"loop process - {} events, {:?}"</span>, <span class="ident">amt</span>, <span class="ident">after_poll</span>.<span class="ident">elapsed</span>()); |
| <span class="kw">return</span> <span class="ident">fired</span> |
| } |
| |
| <span class="kw">fn</span> <span class="ident">dispatch</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">token</span>: <span class="ident">mio</span>::<span class="ident">Token</span>, <span class="ident">ready</span>: <span class="ident">mio</span>::<span class="ident">Ready</span>) { |
| <span class="kw">let</span> <span class="ident">token</span> <span class="op">=</span> <span class="ident">usize</span>::<span class="ident">from</span>(<span class="ident">token</span>) <span class="op">-</span> <span class="ident">TOKEN_START</span>; |
| <span class="kw">if</span> <span class="ident">token</span> <span class="op">%</span> <span class="number">2</span> <span class="op">==</span> <span class="number">0</span> { |
| <span class="self">self</span>.<span class="ident">dispatch_io</span>(<span class="ident">token</span> <span class="op">/</span> <span class="number">2</span>, <span class="ident">ready</span>) |
| } <span class="kw">else</span> { |
| <span class="self">self</span>.<span class="ident">dispatch_task</span>(<span class="ident">token</span> <span class="op">/</span> <span class="number">2</span>) |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">dispatch_io</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">token</span>: <span class="ident">usize</span>, <span class="ident">ready</span>: <span class="ident">mio</span>::<span class="ident">Ready</span>) { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">reader</span> <span class="op">=</span> <span class="prelude-val">None</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">writer</span> <span class="op">=</span> <span class="prelude-val">None</span>; |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">inner</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>(); |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">io</span>) <span class="op">=</span> <span class="ident">inner</span>.<span class="ident">io_dispatch</span>.<span class="ident">get_mut</span>(<span class="ident">token</span>) { |
| <span class="ident">io</span>.<span class="ident">readiness</span>.<span class="ident">fetch_or</span>(<span class="ident">ready2usize</span>(<span class="ident">ready</span>), <span class="ident">Ordering</span>::<span class="ident">Relaxed</span>); |
| <span class="kw">if</span> <span class="ident">ready</span>.<span class="ident">is_writable</span>() { |
| <span class="ident">writer</span> <span class="op">=</span> <span class="ident">io</span>.<span class="ident">writer</span>.<span class="ident">take</span>(); |
| } |
| <span class="kw">if</span> <span class="op">!</span>(<span class="ident">ready</span> <span class="op">&</span> (<span class="op">!</span><span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">writable</span>())).<span class="ident">is_empty</span>() { |
| <span class="ident">reader</span> <span class="op">=</span> <span class="ident">io</span>.<span class="ident">reader</span>.<span class="ident">take</span>(); |
| } |
| } |
| <span class="ident">drop</span>(<span class="ident">inner</span>); |
| <span class="comment">// TODO: don't notify the same task twice</span> |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">reader</span>) <span class="op">=</span> <span class="ident">reader</span> { |
| <span class="self">self</span>.<span class="ident">notify_handle</span>(<span class="ident">reader</span>); |
| } |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">writer</span>) <span class="op">=</span> <span class="ident">writer</span> { |
| <span class="self">self</span>.<span class="ident">notify_handle</span>(<span class="ident">writer</span>); |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">dispatch_task</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">token</span>: <span class="ident">usize</span>) { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">inner</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>(); |
| <span class="kw">let</span> (<span class="ident">task</span>, <span class="ident">wake</span>) <span class="op">=</span> <span class="kw">match</span> <span class="ident">inner</span>.<span class="ident">task_dispatch</span>.<span class="ident">get_mut</span>(<span class="ident">token</span>) { |
| <span class="prelude-val">Some</span>(<span class="ident">slot</span>) <span class="op">=></span> (<span class="ident">slot</span>.<span class="ident">spawn</span>.<span class="ident">take</span>(), <span class="ident">slot</span>.<span class="ident">wake</span>.<span class="ident">take</span>()), |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span>, |
| }; |
| <span class="kw">let</span> (<span class="kw-2">mut</span> <span class="ident">task</span>, <span class="ident">wake</span>) <span class="op">=</span> <span class="kw">match</span> (<span class="ident">task</span>, <span class="ident">wake</span>) { |
| (<span class="prelude-val">Some</span>(<span class="ident">task</span>), <span class="prelude-val">Some</span>(<span class="ident">wake</span>)) <span class="op">=></span> (<span class="ident">task</span>, <span class="ident">wake</span>), |
| _ <span class="op">=></span> <span class="kw">return</span>, |
| }; |
| <span class="ident">wake</span>.<span class="number">0</span>.<span class="ident">set_readiness</span>(<span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">empty</span>()).<span class="ident">unwrap</span>(); |
| <span class="ident">drop</span>(<span class="ident">inner</span>); |
| <span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">CURRENT_LOOP</span>.<span class="ident">set</span>(<span class="self">self</span>, <span class="op">||</span> { |
| <span class="ident">task</span>.<span class="ident">poll_future_notify</span>(<span class="kw-2">&</span><span class="ident">wake</span>, <span class="number">0</span>) |
| }); |
| <span class="kw">let</span> <span class="ident">_task_to_drop</span>; |
| <span class="ident">inner</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>(); |
| <span class="kw">match</span> <span class="ident">res</span> { |
| <span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>) <span class="op">=></span> { |
| <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">inner</span>.<span class="ident">task_dispatch</span>[<span class="ident">token</span>].<span class="ident">spawn</span>.<span class="ident">is_none</span>()); |
| <span class="ident">inner</span>.<span class="ident">task_dispatch</span>[<span class="ident">token</span>].<span class="ident">spawn</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">task</span>); |
| <span class="ident">inner</span>.<span class="ident">task_dispatch</span>[<span class="ident">token</span>].<span class="ident">wake</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">wake</span>); |
| } |
| <span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(())) <span class="op">|</span> |
| <span class="prelude-val">Err</span>(()) <span class="op">=></span> { |
| <span class="ident">_task_to_drop</span> <span class="op">=</span> <span class="ident">inner</span>.<span class="ident">task_dispatch</span>.<span class="ident">remove</span>(<span class="ident">token</span>); |
| } |
| } |
| <span class="ident">drop</span>(<span class="ident">inner</span>); |
| } |
| |
| <span class="kw">fn</span> <span class="ident">consume_timeouts</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">now</span>: <span class="ident">Instant</span>) { |
| <span class="kw">loop</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">inner</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>(); |
| <span class="kw">match</span> <span class="ident">inner</span>.<span class="ident">timer_heap</span>.<span class="ident">peek</span>() { |
| <span class="prelude-val">Some</span>(<span class="ident">head</span>) <span class="kw">if</span> <span class="ident">head</span>.<span class="number">0</span> <span class="op"><=</span> <span class="ident">now</span> <span class="op">=></span> {} |
| <span class="prelude-val">Some</span>(_) <span class="op">=></span> <span class="kw">break</span>, |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">break</span>, |
| }; |
| <span class="kw">let</span> (_, <span class="ident">slab_idx</span>) <span class="op">=</span> <span class="ident">inner</span>.<span class="ident">timer_heap</span>.<span class="ident">pop</span>().<span class="ident">unwrap</span>(); |
| |
| <span class="macro">trace</span><span class="macro">!</span>(<span class="string">"firing timeout: {}"</span>, <span class="ident">slab_idx</span>); |
| <span class="ident">inner</span>.<span class="ident">timeouts</span>[<span class="ident">slab_idx</span>].<span class="number">0</span>.<span class="ident">take</span>().<span class="ident">unwrap</span>(); |
| <span class="kw">let</span> <span class="ident">handle</span> <span class="op">=</span> <span class="ident">inner</span>.<span class="ident">timeouts</span>[<span class="ident">slab_idx</span>].<span class="number">1</span>.<span class="ident">fire</span>(); |
| <span class="ident">drop</span>(<span class="ident">inner</span>); |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">handle</span>) <span class="op">=</span> <span class="ident">handle</span> { |
| <span class="self">self</span>.<span class="ident">notify_handle</span>(<span class="ident">handle</span>); |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Method used to notify a task handle.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Note that this should be used instead of `handle.notify()` to ensure</span> |
| <span class="doccomment">/// that the `CURRENT_LOOP` variable is set appropriately.</span> |
| <span class="kw">fn</span> <span class="ident">notify_handle</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">handle</span>: <span class="ident">Task</span>) { |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"notifying a task handle"</span>); |
| <span class="ident">CURRENT_LOOP</span>.<span class="ident">set</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="op">||</span> <span class="ident">handle</span>.<span class="ident">notify</span>()); |
| } |
| |
| <span class="kw">fn</span> <span class="ident">consume_queue</span>(<span class="kw-2">&</span><span class="self">self</span>) { |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"consuming notification queue"</span>); |
| <span class="comment">// TODO: can we do better than `.unwrap()` here?</span> |
| <span class="kw">loop</span> { |
| <span class="kw">let</span> <span class="ident">msg</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">rx</span>.<span class="ident">borrow_mut</span>().<span class="ident">poll_stream_notify</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">rx_readiness</span>, <span class="number">0</span>).<span class="ident">unwrap</span>(); |
| <span class="kw">match</span> <span class="ident">msg</span> { |
| <span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="prelude-val">Some</span>(<span class="ident">msg</span>)) <span class="op">=></span> <span class="self">self</span>.<span class="ident">notify</span>(<span class="ident">msg</span>), |
| <span class="ident">Async</span>::<span class="ident">NotReady</span> <span class="op">|</span> |
| <span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="prelude-val">None</span>) <span class="op">=></span> <span class="kw">break</span>, |
| } |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">notify</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">msg</span>: <span class="ident">Message</span>) { |
| <span class="kw">match</span> <span class="ident">msg</span> { |
| <span class="ident">Message</span>::<span class="ident">DropSource</span>(<span class="ident">tok</span>) <span class="op">=></span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>().<span class="ident">drop_source</span>(<span class="ident">tok</span>), |
| <span class="ident">Message</span>::<span class="ident">Schedule</span>(<span class="ident">tok</span>, <span class="ident">wake</span>, <span class="ident">dir</span>) <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">task</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>().<span class="ident">schedule</span>(<span class="ident">tok</span>, <span class="ident">wake</span>, <span class="ident">dir</span>); |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">task</span>) <span class="op">=</span> <span class="ident">task</span> { |
| <span class="self">self</span>.<span class="ident">notify_handle</span>(<span class="ident">task</span>); |
| } |
| } |
| <span class="ident">Message</span>::<span class="ident">UpdateTimeout</span>(<span class="ident">t</span>, <span class="ident">handle</span>) <span class="op">=></span> { |
| <span class="kw">let</span> <span class="ident">task</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>().<span class="ident">update_timeout</span>(<span class="ident">t</span>, <span class="ident">handle</span>); |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">task</span>) <span class="op">=</span> <span class="ident">task</span> { |
| <span class="self">self</span>.<span class="ident">notify_handle</span>(<span class="ident">task</span>); |
| } |
| } |
| <span class="ident">Message</span>::<span class="ident">ResetTimeout</span>(<span class="ident">t</span>, <span class="ident">at</span>) <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>().<span class="ident">reset_timeout</span>(<span class="ident">t</span>, <span class="ident">at</span>); |
| } |
| <span class="ident">Message</span>::<span class="ident">CancelTimeout</span>(<span class="ident">t</span>) <span class="op">=></span> { |
| <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>().<span class="ident">cancel_timeout</span>(<span class="ident">t</span>) |
| } |
| <span class="ident">Message</span>::<span class="ident">Run</span>(<span class="ident">r</span>) <span class="op">=></span> <span class="ident">r</span>.<span class="ident">call_box</span>(<span class="self">self</span>), |
| } |
| } |
| |
| <span class="doccomment">/// Get the ID of this loop</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">id</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">CoreId</span> { |
| <span class="ident">CoreId</span>(<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">borrow</span>().<span class="ident">id</span>) |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">F</span><span class="op">></span> <span class="ident">Executor</span><span class="op"><</span><span class="ident">F</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Core</span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> (), <span class="ident">Error</span> <span class="op">=</span> ()<span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>, |
| { |
| <span class="kw">fn</span> <span class="ident">execute</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">future</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">ExecuteError</span><span class="op"><</span><span class="ident">F</span><span class="op">>></span> { |
| <span class="self">self</span>.<span class="ident">handle</span>().<span class="ident">execute</span>(<span class="ident">future</span>) |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">Core</span> { |
| <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> { |
| <span class="ident">f</span>.<span class="ident">debug_struct</span>(<span class="string">"Core"</span>) |
| .<span class="ident">field</span>(<span class="string">"id"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">id</span>()) |
| .<span class="ident">finish</span>() |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Inner</span> { |
| <span class="kw">fn</span> <span class="ident">add_source</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">source</span>: <span class="kw-2">&</span><span class="ident">Evented</span>) |
| <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>(<span class="ident">Arc</span><span class="op"><</span><span class="ident">AtomicUsize</span><span class="op">></span>, <span class="ident">usize</span>)<span class="op">></span> { |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"adding a new I/O source"</span>); |
| <span class="kw">let</span> <span class="ident">sched</span> <span class="op">=</span> <span class="ident">ScheduledIo</span> { |
| <span class="ident">readiness</span>: <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="ident">AtomicUsize</span>::<span class="ident">new</span>(<span class="number">0</span>)), |
| <span class="ident">reader</span>: <span class="prelude-val">None</span>, |
| <span class="ident">writer</span>: <span class="prelude-val">None</span>, |
| }; |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">io_dispatch</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="self">self</span>.<span class="ident">io_dispatch</span>.<span class="ident">capacity</span>() { |
| <span class="kw">let</span> <span class="ident">amt</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">io_dispatch</span>.<span class="ident">len</span>(); |
| <span class="self">self</span>.<span class="ident">io_dispatch</span>.<span class="ident">reserve_exact</span>(<span class="ident">amt</span>); |
| } |
| <span class="kw">let</span> <span class="ident">entry</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">io_dispatch</span>.<span class="ident">vacant_entry</span>(); |
| <span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">entry</span>.<span class="ident">key</span>(); |
| <span class="macro">try</span><span class="macro">!</span>(<span class="self">self</span>.<span class="ident">io</span>.<span class="ident">register</span>(<span class="ident">source</span>, |
| <span class="ident">mio</span>::<span class="ident">Token</span>(<span class="ident">TOKEN_START</span> <span class="op">+</span> <span class="ident">key</span> <span class="op">*</span> <span class="number">2</span>), |
| <span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">readable</span>() <span class="op">|</span> |
| <span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">writable</span>() <span class="op">|</span> |
| <span class="ident">platform</span>::<span class="ident">all</span>(), |
| <span class="ident">mio</span>::<span class="ident">PollOpt</span>::<span class="ident">edge</span>())); |
| <span class="kw">let</span> <span class="ident">sched</span> <span class="op">=</span> <span class="ident">entry</span>.<span class="ident">insert</span>(<span class="ident">sched</span>); |
| <span class="prelude-val">Ok</span>((<span class="ident">sched</span>.<span class="ident">readiness</span>.<span class="ident">clone</span>(), <span class="ident">key</span>)) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">deregister_source</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">source</span>: <span class="kw-2">&</span><span class="ident">Evented</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> { |
| <span class="self">self</span>.<span class="ident">io</span>.<span class="ident">deregister</span>(<span class="ident">source</span>) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">drop_source</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">token</span>: <span class="ident">usize</span>) { |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"dropping I/O source: {}"</span>, <span class="ident">token</span>); |
| <span class="self">self</span>.<span class="ident">io_dispatch</span>.<span class="ident">remove</span>(<span class="ident">token</span>); |
| } |
| |
| <span class="kw">fn</span> <span class="ident">schedule</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">token</span>: <span class="ident">usize</span>, <span class="ident">wake</span>: <span class="ident">Task</span>, <span class="ident">dir</span>: <span class="ident">Direction</span>) |
| <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Task</span><span class="op">></span> { |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"scheduling direction for: {}"</span>, <span class="ident">token</span>); |
| <span class="kw">let</span> <span class="ident">sched</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">io_dispatch</span>.<span class="ident">get_mut</span>(<span class="ident">token</span>).<span class="ident">unwrap</span>(); |
| <span class="kw">let</span> (<span class="ident">slot</span>, <span class="ident">ready</span>) <span class="op">=</span> <span class="kw">match</span> <span class="ident">dir</span> { |
| <span class="ident">Direction</span>::<span class="ident">Read</span> <span class="op">=></span> (<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">sched</span>.<span class="ident">reader</span>, <span class="op">!</span><span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">writable</span>()), |
| <span class="ident">Direction</span>::<span class="ident">Write</span> <span class="op">=></span> (<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">sched</span>.<span class="ident">writer</span>, <span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">writable</span>()), |
| }; |
| <span class="kw">if</span> <span class="ident">sched</span>.<span class="ident">readiness</span>.<span class="ident">load</span>(<span class="ident">Ordering</span>::<span class="ident">SeqCst</span>) <span class="op">&</span> <span class="ident">ready2usize</span>(<span class="ident">ready</span>) <span class="op">!=</span> <span class="number">0</span> { |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"cancelling block"</span>); |
| <span class="kw-2">*</span><span class="ident">slot</span> <span class="op">=</span> <span class="prelude-val">None</span>; |
| <span class="prelude-val">Some</span>(<span class="ident">wake</span>) |
| } <span class="kw">else</span> { |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"blocking"</span>); |
| <span class="kw-2">*</span><span class="ident">slot</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">wake</span>); |
| <span class="prelude-val">None</span> |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">add_timeout</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">at</span>: <span class="ident">Instant</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">timeouts</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="self">self</span>.<span class="ident">timeouts</span>.<span class="ident">capacity</span>() { |
| <span class="kw">let</span> <span class="ident">len</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">timeouts</span>.<span class="ident">len</span>(); |
| <span class="self">self</span>.<span class="ident">timeouts</span>.<span class="ident">reserve_exact</span>(<span class="ident">len</span>); |
| } |
| <span class="kw">let</span> <span class="ident">entry</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">timeouts</span>.<span class="ident">vacant_entry</span>(); |
| <span class="kw">let</span> <span class="ident">key</span> <span class="op">=</span> <span class="ident">entry</span>.<span class="ident">key</span>(); |
| <span class="kw">let</span> <span class="ident">slot</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">timer_heap</span>.<span class="ident">push</span>((<span class="ident">at</span>, <span class="ident">key</span>)); |
| <span class="ident">entry</span>.<span class="ident">insert</span>((<span class="prelude-val">Some</span>(<span class="ident">slot</span>), <span class="ident">TimeoutState</span>::<span class="ident">NotFired</span>)); |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"added a timeout: {}"</span>, <span class="ident">key</span>); |
| <span class="kw">return</span> <span class="ident">key</span>; |
| } |
| |
| <span class="kw">fn</span> <span class="ident">update_timeout</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">token</span>: <span class="ident">usize</span>, <span class="ident">handle</span>: <span class="ident">Task</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Task</span><span class="op">></span> { |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"updating a timeout: {}"</span>, <span class="ident">token</span>); |
| <span class="self">self</span>.<span class="ident">timeouts</span>[<span class="ident">token</span>].<span class="number">1</span>.<span class="ident">block</span>(<span class="ident">handle</span>) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">reset_timeout</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">token</span>: <span class="ident">usize</span>, <span class="ident">at</span>: <span class="ident">Instant</span>) { |
| <span class="kw">let</span> <span class="ident">pair</span> <span class="op">=</span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">timeouts</span>[<span class="ident">token</span>]; |
| <span class="comment">// TODO: avoid remove + push and instead just do one sift of the heap?</span> |
| <span class="comment">// In theory we could update it in place and then do the percolation</span> |
| <span class="comment">// as necessary</span> |
| <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">slot</span>) <span class="op">=</span> <span class="ident">pair</span>.<span class="number">0</span>.<span class="ident">take</span>() { |
| <span class="self">self</span>.<span class="ident">timer_heap</span>.<span class="ident">remove</span>(<span class="ident">slot</span>); |
| } |
| <span class="kw">let</span> <span class="ident">slot</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">timer_heap</span>.<span class="ident">push</span>((<span class="ident">at</span>, <span class="ident">token</span>)); |
| <span class="kw-2">*</span><span class="ident">pair</span> <span class="op">=</span> (<span class="prelude-val">Some</span>(<span class="ident">slot</span>), <span class="ident">TimeoutState</span>::<span class="ident">NotFired</span>); |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"set a timeout: {}"</span>, <span class="ident">token</span>); |
| } |
| |
| <span class="kw">fn</span> <span class="ident">cancel_timeout</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">token</span>: <span class="ident">usize</span>) { |
| <span class="macro">debug</span><span class="macro">!</span>(<span class="string">"cancel a timeout: {}"</span>, <span class="ident">token</span>); |
| <span class="kw">let</span> <span class="ident">pair</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">timeouts</span>.<span class="ident">remove</span>(<span class="ident">token</span>); |
| <span class="kw">if</span> <span class="kw">let</span> (<span class="prelude-val">Some</span>(<span class="ident">slot</span>), <span class="ident">_state</span>) <span class="op">=</span> <span class="ident">pair</span> { |
| <span class="self">self</span>.<span class="ident">timer_heap</span>.<span class="ident">remove</span>(<span class="ident">slot</span>); |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">spawn</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">future</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span><span class="op">=</span>(), <span class="ident">Error</span><span class="op">=</span>()<span class="op">>></span>) { |
| <span class="kw">if</span> <span class="self">self</span>.<span class="ident">task_dispatch</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="self">self</span>.<span class="ident">task_dispatch</span>.<span class="ident">capacity</span>() { |
| <span class="kw">let</span> <span class="ident">len</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">task_dispatch</span>.<span class="ident">len</span>(); |
| <span class="self">self</span>.<span class="ident">task_dispatch</span>.<span class="ident">reserve_exact</span>(<span class="ident">len</span>); |
| } |
| <span class="kw">let</span> <span class="ident">entry</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">task_dispatch</span>.<span class="ident">vacant_entry</span>(); |
| <span class="kw">let</span> <span class="ident">token</span> <span class="op">=</span> <span class="ident">TOKEN_START</span> <span class="op">+</span> <span class="number">2</span> <span class="op">*</span> <span class="ident">entry</span>.<span class="ident">key</span>() <span class="op">+</span> <span class="number">1</span>; |
| <span class="kw">let</span> <span class="ident">pair</span> <span class="op">=</span> <span class="ident">mio</span>::<span class="ident">Registration</span>::<span class="ident">new2</span>(); |
| <span class="self">self</span>.<span class="ident">io</span>.<span class="ident">register</span>(<span class="kw-2">&</span><span class="ident">pair</span>.<span class="number">0</span>, |
| <span class="ident">mio</span>::<span class="ident">Token</span>(<span class="ident">token</span>), |
| <span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">readable</span>(), |
| <span class="ident">mio</span>::<span class="ident">PollOpt</span>::<span class="ident">level</span>()) |
| .<span class="ident">expect</span>(<span class="string">"cannot fail future registration with mio"</span>); |
| <span class="kw">let</span> <span class="ident">unpark</span> <span class="op">=</span> <span class="ident">Arc</span>::<span class="ident">new</span>(<span class="ident">MySetReadiness</span>(<span class="ident">pair</span>.<span class="number">1</span>)); |
| <span class="ident">unpark</span>.<span class="ident">notify</span>(<span class="number">0</span>); |
| <span class="ident">entry</span>.<span class="ident">insert</span>(<span class="ident">ScheduledTask</span> { |
| <span class="ident">spawn</span>: <span class="prelude-val">Some</span>(<span class="ident">executor</span>::<span class="ident">spawn</span>(<span class="ident">future</span>)), |
| <span class="ident">wake</span>: <span class="prelude-val">Some</span>(<span class="ident">unpark</span>), |
| <span class="ident">_registration</span>: <span class="ident">pair</span>.<span class="number">0</span>, |
| }); |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Remote</span> { |
| <span class="kw">fn</span> <span class="ident">send</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">msg</span>: <span class="ident">Message</span>) { |
| <span class="self">self</span>.<span class="ident">with_loop</span>(<span class="op">|</span><span class="ident">lp</span><span class="op">|</span> { |
| <span class="kw">match</span> <span class="ident">lp</span> { |
| <span class="prelude-val">Some</span>(<span class="ident">lp</span>) <span class="op">=></span> { |
| <span class="comment">// We want to make sure that all messages are received in</span> |
| <span class="comment">// order, so we need to consume pending messages before</span> |
| <span class="comment">// delivering this message to the core. The actually</span> |
| <span class="comment">// `consume_queue` function, however, can be somewhat slow</span> |
| <span class="comment">// right now where receiving on a channel will acquire a</span> |
| <span class="comment">// lock and block the current task.</span> |
| <span class="comment">//</span> |
| <span class="comment">// To speed this up check the message queue's readiness as a</span> |
| <span class="comment">// sort of preflight check to see if we've actually got any</span> |
| <span class="comment">// messages. This should just involve some atomics and if it</span> |
| <span class="comment">// comes back false then we know for sure there are no</span> |
| <span class="comment">// pending messages, so we can immediately deliver our</span> |
| <span class="comment">// message.</span> |
| <span class="kw">if</span> <span class="ident">lp</span>.<span class="ident">rx_readiness</span>.<span class="number">0</span>.<span class="ident">readiness</span>().<span class="ident">is_readable</span>() { |
| <span class="ident">lp</span>.<span class="ident">consume_queue</span>(); |
| } |
| <span class="ident">lp</span>.<span class="ident">notify</span>(<span class="ident">msg</span>); |
| } |
| <span class="prelude-val">None</span> <span class="op">=></span> { |
| <span class="kw">match</span> <span class="self">self</span>.<span class="ident">tx</span>.<span class="ident">unbounded_send</span>(<span class="ident">msg</span>) { |
| <span class="prelude-val">Ok</span>(()) <span class="op">=></span> {} |
| |
| <span class="comment">// TODO: this error should punt upwards and we should</span> |
| <span class="comment">// notify the caller that the message wasn't</span> |
| <span class="comment">// received. This is tokio-core#17</span> |
| <span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="ident">drop</span>(<span class="ident">e</span>), |
| } |
| } |
| } |
| }) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">with_loop</span><span class="op"><</span><span class="ident">F</span>, <span class="ident">R</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="ident">R</span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnOnce</span>(<span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">Core</span><span class="op">></span>) <span class="op">-></span> <span class="ident">R</span> |
| { |
| <span class="kw">if</span> <span class="ident">CURRENT_LOOP</span>.<span class="ident">is_set</span>() { |
| <span class="ident">CURRENT_LOOP</span>.<span class="ident">with</span>(<span class="op">|</span><span class="ident">lp</span><span class="op">|</span> { |
| <span class="kw">let</span> <span class="ident">same</span> <span class="op">=</span> <span class="ident">lp</span>.<span class="ident">inner</span>.<span class="ident">borrow</span>().<span class="ident">id</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">id</span>; |
| <span class="kw">if</span> <span class="ident">same</span> { |
| <span class="ident">f</span>(<span class="prelude-val">Some</span>(<span class="ident">lp</span>)) |
| } <span class="kw">else</span> { |
| <span class="ident">f</span>(<span class="prelude-val">None</span>) |
| } |
| }) |
| } <span class="kw">else</span> { |
| <span class="ident">f</span>(<span class="prelude-val">None</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Spawns a new future into the event loop this remote is associated with.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This function takes a closure which is executed within the context of</span> |
| <span class="doccomment">/// the I/O loop itself. The future returned by the closure will be</span> |
| <span class="doccomment">/// scheduled on the event loop and run to completion.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// Note that while the closure, `F`, requires the `Send` bound as it might</span> |
| <span class="doccomment">/// cross threads, the future `R` does not.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Panics</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This method will **not** catch panics from polling the future `f`. If</span> |
| <span class="doccomment">/// the future panics then it's the responsibility of the caller to catch</span> |
| <span class="doccomment">/// that panic and handle it as appropriate.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">spawn</span><span class="op"><</span><span class="ident">F</span>, <span class="ident">R</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="ident">F</span>) |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnOnce</span>(<span class="kw-2">&</span><span class="ident">Handle</span>) <span class="op">-></span> <span class="ident">R</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'static</span>, |
| <span class="ident">R</span>: <span class="ident">IntoFuture</span><span class="op"><</span><span class="ident">Item</span><span class="op">=</span>(), <span class="ident">Error</span><span class="op">=</span>()<span class="op">></span>, |
| <span class="ident">R</span>::<span class="ident">Future</span>: <span class="lifetime">'static</span>, |
| { |
| <span class="self">self</span>.<span class="ident">send</span>(<span class="ident">Message</span>::<span class="ident">Run</span>(<span class="ident">Box</span>::<span class="ident">new</span>(<span class="op">|</span><span class="ident">lp</span>: <span class="kw-2">&</span><span class="ident">Core</span><span class="op">|</span> { |
| <span class="kw">let</span> <span class="ident">f</span> <span class="op">=</span> <span class="ident">f</span>(<span class="kw-2">&</span><span class="ident">lp</span>.<span class="ident">handle</span>()); |
| <span class="ident">lp</span>.<span class="ident">inner</span>.<span class="ident">borrow_mut</span>().<span class="ident">spawn</span>(<span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">f</span>.<span class="ident">into_future</span>())); |
| }))); |
| } |
| |
| <span class="doccomment">/// Return the ID of the represented Core</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">id</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">CoreId</span> { |
| <span class="ident">CoreId</span>(<span class="self">self</span>.<span class="ident">id</span>) |
| } |
| |
| <span class="doccomment">/// Attempts to "promote" this remote to a handle, if possible.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This function is intended for structures which typically work through a</span> |
| <span class="doccomment">/// `Remote` but want to optimize runtime when the remote doesn't actually</span> |
| <span class="doccomment">/// leave the thread of the original reactor. This will attempt to return a</span> |
| <span class="doccomment">/// handle if the `Remote` is on the same thread as the event loop and the</span> |
| <span class="doccomment">/// event loop is running.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// If this `Remote` has moved to a different thread or if the event loop is</span> |
| <span class="doccomment">/// running, then `None` may be returned. If you need to guarantee access to</span> |
| <span class="doccomment">/// a `Handle`, then you can call this function and fall back to using</span> |
| <span class="doccomment">/// `spawn` above if it returns `None`.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">handle</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Handle</span><span class="op">></span> { |
| <span class="kw">if</span> <span class="ident">CURRENT_LOOP</span>.<span class="ident">is_set</span>() { |
| <span class="ident">CURRENT_LOOP</span>.<span class="ident">with</span>(<span class="op">|</span><span class="ident">lp</span><span class="op">|</span> { |
| <span class="kw">let</span> <span class="ident">same</span> <span class="op">=</span> <span class="ident">lp</span>.<span class="ident">inner</span>.<span class="ident">borrow</span>().<span class="ident">id</span> <span class="op">==</span> <span class="self">self</span>.<span class="ident">id</span>; |
| <span class="kw">if</span> <span class="ident">same</span> { |
| <span class="prelude-val">Some</span>(<span class="ident">lp</span>.<span class="ident">handle</span>()) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| }) |
| } <span class="kw">else</span> { |
| <span class="prelude-val">None</span> |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">F</span><span class="op">></span> <span class="ident">Executor</span><span class="op"><</span><span class="ident">F</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Remote</span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> (), <span class="ident">Error</span> <span class="op">=</span> ()<span class="op">></span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'static</span>, |
| { |
| <span class="kw">fn</span> <span class="ident">execute</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">future</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">ExecuteError</span><span class="op"><</span><span class="ident">F</span><span class="op">>></span> { |
| <span class="self">self</span>.<span class="ident">spawn</span>(<span class="op">|</span>_<span class="op">|</span> <span class="ident">future</span>); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">Remote</span> { |
| <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> { |
| <span class="ident">f</span>.<span class="ident">debug_struct</span>(<span class="string">"Remote"</span>) |
| .<span class="ident">field</span>(<span class="string">"id"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">id</span>()) |
| .<span class="ident">finish</span>() |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">Handle</span> { |
| <span class="doccomment">/// Returns a reference to the underlying remote handle to the event loop.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">remote</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">Remote</span> { |
| <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">remote</span> |
| } |
| |
| <span class="doccomment">/// Spawns a new future on the event loop this handle is associated with.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Panics</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This method will **not** catch panics from polling the future `f`. If</span> |
| <span class="doccomment">/// the future panics then it's the responsibility of the caller to catch</span> |
| <span class="doccomment">/// that panic and handle it as appropriate.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">spawn</span><span class="op"><</span><span class="ident">F</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="ident">F</span>) |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span><span class="op">=</span>(), <span class="ident">Error</span><span class="op">=</span>()<span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>, |
| { |
| <span class="kw">let</span> <span class="ident">inner</span> <span class="op">=</span> <span class="kw">match</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">upgrade</span>() { |
| <span class="prelude-val">Some</span>(<span class="ident">inner</span>) <span class="op">=></span> <span class="ident">inner</span>, |
| <span class="prelude-val">None</span> <span class="op">=></span> <span class="kw">return</span>, |
| }; |
| <span class="ident">inner</span>.<span class="ident">borrow_mut</span>().<span class="ident">spawn</span>(<span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">f</span>)); |
| } |
| |
| <span class="doccomment">/// Spawns a closure on this event loop.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This function is a convenience wrapper around the `spawn` function above</span> |
| <span class="doccomment">/// for running a closure wrapped in `futures::lazy`. It will spawn the</span> |
| <span class="doccomment">/// function `f` provided onto the event loop, and continue to run the</span> |
| <span class="doccomment">/// future returned by `f` on the event loop as well.</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// # Panics</span> |
| <span class="doccomment">///</span> |
| <span class="doccomment">/// This method will **not** catch panics from polling the future `f`. If</span> |
| <span class="doccomment">/// the future panics then it's the responsibility of the caller to catch</span> |
| <span class="doccomment">/// that panic and handle it as appropriate.</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">spawn_fn</span><span class="op"><</span><span class="ident">F</span>, <span class="ident">R</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="ident">F</span>) |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">FnOnce</span>() <span class="op">-></span> <span class="ident">R</span> <span class="op">+</span> <span class="lifetime">'static</span>, |
| <span class="ident">R</span>: <span class="ident">IntoFuture</span><span class="op"><</span><span class="ident">Item</span><span class="op">=</span>(), <span class="ident">Error</span><span class="op">=</span>()<span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>, |
| { |
| <span class="self">self</span>.<span class="ident">spawn</span>(<span class="ident">future</span>::<span class="ident">lazy</span>(<span class="ident">f</span>)) |
| } |
| |
| <span class="doccomment">/// Return the ID of the represented Core</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">id</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">CoreId</span> { |
| <span class="self">self</span>.<span class="ident">remote</span>.<span class="ident">id</span>() |
| } |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">F</span><span class="op">></span> <span class="ident">Executor</span><span class="op"><</span><span class="ident">F</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Handle</span> |
| <span class="kw">where</span> <span class="ident">F</span>: <span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> (), <span class="ident">Error</span> <span class="op">=</span> ()<span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>, |
| { |
| <span class="kw">fn</span> <span class="ident">execute</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">future</span>: <span class="ident">F</span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">ExecuteError</span><span class="op"><</span><span class="ident">F</span><span class="op">>></span> { |
| <span class="self">self</span>.<span class="ident">spawn</span>(<span class="ident">future</span>); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">Handle</span> { |
| <span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> { |
| <span class="ident">f</span>.<span class="ident">debug_struct</span>(<span class="string">"Handle"</span>) |
| .<span class="ident">field</span>(<span class="string">"id"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">id</span>()) |
| .<span class="ident">finish</span>() |
| } |
| } |
| |
| <span class="kw">impl</span> <span class="ident">TimeoutState</span> { |
| <span class="kw">fn</span> <span class="ident">block</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">handle</span>: <span class="ident">Task</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Task</span><span class="op">></span> { |
| <span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> { |
| <span class="ident">TimeoutState</span>::<span class="ident">Fired</span> <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="ident">handle</span>), |
| _ <span class="op">=></span> {} |
| } |
| <span class="kw-2">*</span><span class="self">self</span> <span class="op">=</span> <span class="ident">TimeoutState</span>::<span class="ident">Waiting</span>(<span class="ident">handle</span>); |
| <span class="prelude-val">None</span> |
| } |
| |
| <span class="kw">fn</span> <span class="ident">fire</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Task</span><span class="op">></span> { |
| <span class="kw">match</span> <span class="ident">mem</span>::<span class="ident">replace</span>(<span class="self">self</span>, <span class="ident">TimeoutState</span>::<span class="ident">Fired</span>) { |
| <span class="ident">TimeoutState</span>::<span class="ident">NotFired</span> <span class="op">=></span> <span class="prelude-val">None</span>, |
| <span class="ident">TimeoutState</span>::<span class="ident">Fired</span> <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"fired twice?"</span>), |
| <span class="ident">TimeoutState</span>::<span class="ident">Waiting</span>(<span class="ident">handle</span>) <span class="op">=></span> <span class="prelude-val">Some</span>(<span class="ident">handle</span>), |
| } |
| } |
| } |
| |
| <span class="kw">struct</span> <span class="ident">MySetReadiness</span>(<span class="ident">mio</span>::<span class="ident">SetReadiness</span>); |
| |
| <span class="kw">impl</span> <span class="ident">Notify</span> <span class="kw">for</span> <span class="ident">MySetReadiness</span> { |
| <span class="kw">fn</span> <span class="ident">notify</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">_id</span>: <span class="ident">usize</span>) { |
| <span class="self">self</span>.<span class="number">0</span>.<span class="ident">set_readiness</span>(<span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">readable</span>()) |
| .<span class="ident">expect</span>(<span class="string">"failed to set readiness"</span>); |
| } |
| } |
| |
| <span class="kw">trait</span> <span class="ident">FnBox</span>: <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'static</span> { |
| <span class="kw">fn</span> <span class="ident">call_box</span>(<span class="self">self</span>: <span class="ident">Box</span><span class="op"><</span><span class="self">Self</span><span class="op">></span>, <span class="ident">lp</span>: <span class="kw-2">&</span><span class="ident">Core</span>); |
| } |
| |
| <span class="kw">impl</span><span class="op"><</span><span class="ident">F</span>: <span class="ident">FnOnce</span>(<span class="kw-2">&</span><span class="ident">Core</span>) <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="lifetime">'static</span><span class="op">></span> <span class="ident">FnBox</span> <span class="kw">for</span> <span class="ident">F</span> { |
| <span class="kw">fn</span> <span class="ident">call_box</span>(<span class="self">self</span>: <span class="ident">Box</span><span class="op"><</span><span class="self">Self</span><span class="op">></span>, <span class="ident">lp</span>: <span class="kw-2">&</span><span class="ident">Core</span>) { |
| (<span class="kw-2">*</span><span class="self">self</span>)(<span class="ident">lp</span>) |
| } |
| } |
| |
| <span class="kw">fn</span> <span class="ident">read_ready</span>() <span class="op">-></span> <span class="ident">mio</span>::<span class="ident">Ready</span> { |
| <span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">readable</span>() <span class="op">|</span> <span class="ident">platform</span>::<span class="ident">hup</span>() |
| } |
| |
| <span class="kw">const</span> <span class="ident">READ</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="number">1</span> <span class="op"><<</span> <span class="number">0</span>; |
| <span class="kw">const</span> <span class="ident">WRITE</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="number">1</span> <span class="op"><<</span> <span class="number">1</span>; |
| |
| <span class="kw">fn</span> <span class="ident">ready2usize</span>(<span class="ident">ready</span>: <span class="ident">mio</span>::<span class="ident">Ready</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">bits</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="kw">if</span> <span class="ident">ready</span>.<span class="ident">is_readable</span>() { |
| <span class="ident">bits</span> <span class="op">|=</span> <span class="ident">READ</span>; |
| } |
| <span class="kw">if</span> <span class="ident">ready</span>.<span class="ident">is_writable</span>() { |
| <span class="ident">bits</span> <span class="op">|=</span> <span class="ident">WRITE</span>; |
| } |
| <span class="ident">bits</span> <span class="op">|</span> <span class="ident">platform</span>::<span class="ident">ready2usize</span>(<span class="ident">ready</span>) |
| } |
| |
| <span class="kw">fn</span> <span class="ident">usize2ready</span>(<span class="ident">bits</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="ident">mio</span>::<span class="ident">Ready</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">ready</span> <span class="op">=</span> <span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">empty</span>(); |
| <span class="kw">if</span> <span class="ident">bits</span> <span class="op">&</span> <span class="ident">READ</span> <span class="op">!=</span> <span class="number">0</span> { |
| <span class="ident">ready</span>.<span class="ident">insert</span>(<span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">readable</span>()); |
| } |
| <span class="kw">if</span> <span class="ident">bits</span> <span class="op">&</span> <span class="ident">WRITE</span> <span class="op">!=</span> <span class="number">0</span> { |
| <span class="ident">ready</span>.<span class="ident">insert</span>(<span class="ident">mio</span>::<span class="ident">Ready</span>::<span class="ident">writable</span>()); |
| } |
| <span class="ident">ready</span> <span class="op">|</span> <span class="ident">platform</span>::<span class="ident">usize2ready</span>(<span class="ident">bits</span>) |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">unix</span>, <span class="ident">not</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"fuchsia"</span>)))]</span> |
| <span class="kw">mod</span> <span class="ident">platform</span> { |
| <span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">Ready</span>; |
| <span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">unix</span>::<span class="ident">UnixReady</span>; |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>))]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">all</span>() <span class="op">-></span> <span class="ident">Ready</span> { |
| <span class="ident">hup</span>() <span class="op">|</span> <span class="ident">UnixReady</span>::<span class="ident">aio</span>() |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>)))]</span> |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">all</span>() <span class="op">-></span> <span class="ident">Ready</span> { |
| <span class="ident">hup</span>() |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">hup</span>() <span class="op">-></span> <span class="ident">Ready</span> { |
| <span class="ident">UnixReady</span>::<span class="ident">hup</span>().<span class="ident">into</span>() |
| } |
| |
| <span class="kw">const</span> <span class="ident">HUP</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="number">1</span> <span class="op"><<</span> <span class="number">2</span>; |
| <span class="kw">const</span> <span class="ident">ERROR</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="number">1</span> <span class="op"><<</span> <span class="number">3</span>; |
| <span class="kw">const</span> <span class="ident">AIO</span>: <span class="ident">usize</span> <span class="op">=</span> <span class="number">1</span> <span class="op"><<</span> <span class="number">4</span>; |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>))]</span> |
| <span class="kw">fn</span> <span class="ident">is_aio</span>(<span class="ident">ready</span>: <span class="kw-2">&</span><span class="ident">Ready</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="ident">UnixReady</span>::<span class="ident">from</span>(<span class="kw-2">*</span><span class="ident">ready</span>).<span class="ident">is_aio</span>() |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>)))]</span> |
| <span class="kw">fn</span> <span class="ident">is_aio</span>(<span class="ident">_ready</span>: <span class="kw-2">&</span><span class="ident">Ready</span>) <span class="op">-></span> <span class="ident">bool</span> { |
| <span class="bool-val">false</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">ready2usize</span>(<span class="ident">ready</span>: <span class="ident">Ready</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="kw">let</span> <span class="ident">ready</span> <span class="op">=</span> <span class="ident">UnixReady</span>::<span class="ident">from</span>(<span class="ident">ready</span>); |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">bits</span> <span class="op">=</span> <span class="number">0</span>; |
| <span class="kw">if</span> <span class="ident">is_aio</span>(<span class="kw-2">&</span><span class="ident">ready</span>) { |
| <span class="ident">bits</span> <span class="op">|=</span> <span class="ident">AIO</span>; |
| } |
| <span class="kw">if</span> <span class="ident">ready</span>.<span class="ident">is_error</span>() { |
| <span class="ident">bits</span> <span class="op">|=</span> <span class="ident">ERROR</span>; |
| } |
| <span class="kw">if</span> <span class="ident">ready</span>.<span class="ident">is_hup</span>() { |
| <span class="ident">bits</span> <span class="op">|=</span> <span class="ident">HUP</span>; |
| } |
| <span class="ident">bits</span> |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"ios"</span>, |
| <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"macos"</span>))]</span> |
| <span class="kw">fn</span> <span class="ident">usize2ready_aio</span>(<span class="ident">ready</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">UnixReady</span>) { |
| <span class="ident">ready</span>.<span class="ident">insert</span>(<span class="ident">UnixReady</span>::<span class="ident">aio</span>()); |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, |
| <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"ios"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"macos"</span>)))]</span> |
| <span class="kw">fn</span> <span class="ident">usize2ready_aio</span>(<span class="ident">_ready</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">UnixReady</span>) { |
| <span class="comment">// aio not available here → empty</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">usize2ready</span>(<span class="ident">bits</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="ident">Ready</span> { |
| <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">ready</span> <span class="op">=</span> <span class="ident">UnixReady</span>::<span class="ident">from</span>(<span class="ident">Ready</span>::<span class="ident">empty</span>()); |
| <span class="kw">if</span> <span class="ident">bits</span> <span class="op">&</span> <span class="ident">AIO</span> <span class="op">!=</span> <span class="number">0</span> { |
| <span class="ident">usize2ready_aio</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">ready</span>); |
| } |
| <span class="kw">if</span> <span class="ident">bits</span> <span class="op">&</span> <span class="ident">HUP</span> <span class="op">!=</span> <span class="number">0</span> { |
| <span class="ident">ready</span>.<span class="ident">insert</span>(<span class="ident">UnixReady</span>::<span class="ident">hup</span>()); |
| } |
| <span class="kw">if</span> <span class="ident">bits</span> <span class="op">&</span> <span class="ident">ERROR</span> <span class="op">!=</span> <span class="number">0</span> { |
| <span class="ident">ready</span>.<span class="ident">insert</span>(<span class="ident">UnixReady</span>::<span class="ident">error</span>()); |
| } |
| <span class="ident">ready</span>.<span class="ident">into</span>() |
| } |
| } |
| |
| <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">windows</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"fuchsia"</span>))]</span> |
| <span class="kw">mod</span> <span class="ident">platform</span> { |
| <span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">Ready</span>; |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">all</span>() <span class="op">-></span> <span class="ident">Ready</span> { |
| <span class="comment">// No platform-specific Readinesses for Windows</span> |
| <span class="ident">Ready</span>::<span class="ident">empty</span>() |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">hup</span>() <span class="op">-></span> <span class="ident">Ready</span> { |
| <span class="ident">Ready</span>::<span class="ident">empty</span>() |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">ready2usize</span>(<span class="ident">_r</span>: <span class="ident">Ready</span>) <span class="op">-></span> <span class="ident">usize</span> { |
| <span class="number">0</span> |
| } |
| |
| <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">usize2ready</span>(<span class="ident">_r</span>: <span class="ident">usize</span>) <span class="op">-></span> <span class="ident">Ready</span> { |
| <span class="ident">Ready</span>::<span class="ident">empty</span>() |
| } |
| } |
| </pre> |
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