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GeezerVison is showing github.com — doc,worker: use code markup/markdown in headers · nodejs/node@36b3e15

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    • worker_threads.md
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‎doc/api/worker_threads.md‎

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+30-30Lines changed: 30 additions & 30 deletions
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@@ -53,7 +53,7 @@ When implementing a worker pool, use the [`AsyncResource`][] API to inform
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diagnostic tools (e.g. in order to provide asynchronous stack traces) about the
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correlation between tasks and their outcomes.
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## worker.isMainThread
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## `worker.isMainThread`
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<!-- YAML
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added: v10.5.0
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-->
@@ -74,7 +74,7 @@ if (isMainThread) {
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}
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```
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## worker.moveMessagePortToContext(port, contextifiedSandbox)
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## `worker.moveMessagePortToContext(port, contextifiedSandbox)`
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<!-- YAML
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added: v11.13.0
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-->
@@ -98,7 +98,7 @@ However, the created `MessagePort` will no longer inherit from
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[`EventEmitter`][], and only [`port.onmessage()`][] can be used to receive
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events using it.
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## worker.parentPort
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## `worker.parentPort`
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<!-- YAML
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added: v10.5.0
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@@ -129,7 +129,7 @@ if (isMainThread) {
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}
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```
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## worker.receiveMessageOnPort(port)
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## `worker.receiveMessageOnPort(port)`
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<!-- YAML
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added: v12.3.0
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-->
@@ -157,7 +157,7 @@ console.log(receiveMessageOnPort(port2));
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When this function is used, no `'message'` event will be emitted and the
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`onmessage` listener will not be invoked.
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## worker.SHARE_ENV
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## `worker.SHARE_ENV`
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<!-- YAML
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added: v11.14.0
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@@ -176,7 +176,7 @@ new Worker('process.env.SET_IN_WORKER = "foo"', { eval: true, env: SHARE_ENV })
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});
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```
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## worker.threadId
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## `worker.threadId`
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<!-- YAML
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@@ -187,7 +187,7 @@ An integer identifier for the current thread. On the corresponding worker object
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(if there is any), it is available as [`worker.threadId`][].
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This value is unique for each [`Worker`][] instance inside a single process.
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## worker.workerData
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## `worker.workerData`
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<!-- YAML
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@@ -208,7 +208,7 @@ if (isMainThread) {
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}
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```
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## Class: MessageChannel
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## Class: `MessageChannel`
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<!-- YAML
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@@ -228,7 +228,7 @@ port2.postMessage({ foo: 'bar' });
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// Prints: received { foo: 'bar' } from the `port1.on('message')` listener
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```
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## Class: MessagePort
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## Class: `MessagePort`
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<!-- YAML
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@@ -243,7 +243,7 @@ structured data, memory regions and other `MessagePort`s between different
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With the exception of `MessagePort`s being [`EventEmitter`][]s rather
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than [`EventTarget`][]s, this implementation matches [browser `MessagePort`][]s.
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### Event: 'close'
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### Event: `'close'`
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<!-- YAML
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added: v10.5.0
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@@ -265,7 +265,7 @@ port1.postMessage('foobar');
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port1.close();
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```
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### Event: 'message'
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### Event: `'message'`
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<!-- YAML
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added: v10.5.0
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@@ -278,7 +278,7 @@ input of [`port.postMessage()`][].
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Listeners on this event will receive a clone of the `value` parameter as passed
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to `postMessage()` and no further arguments.
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### port.close()
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### `port.close()`
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<!-- YAML
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@@ -290,7 +290,7 @@ This method can be called when no further communication will happen over this
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The [`'close'` event][] will be emitted on both `MessagePort` instances that
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are part of the channel.
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### port.postMessage(value\[, transferList\])
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### `port.postMessage(value[, transferList])`
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<!-- YAML
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-->
@@ -371,7 +371,7 @@ posting without having side effects.
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For more information on the serialization and deserialization mechanisms
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behind this API, see the [serialization API of the `v8` module][v8.serdes].
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### port.ref()
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### `port.ref()`
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<!-- YAML
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@@ -384,7 +384,7 @@ If listeners are attached or removed using `.on('message')`, the port will
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be `ref()`ed and `unref()`ed automatically depending on whether
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listeners for the event exist.
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### port.start()
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### `port.start()`
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<!-- YAML
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@@ -399,7 +399,7 @@ Node.js also diverges in its handling of `.onmessage`. Setting it will
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automatically call `.start()`, but unsetting it will let messages queue up
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until a new handler is set or the port is discarded.
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### port.unref()
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### `port.unref()`
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<!-- YAML
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@@ -412,7 +412,7 @@ If listeners are attached or removed using `.on('message')`, the port will
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be `ref()`ed and `unref()`ed automatically depending on whether
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listeners for the event exist.
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## Class: Worker
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## Class: `Worker`
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<!-- YAML
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@@ -487,7 +487,7 @@ if (isMainThread) {
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}
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```
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### new Worker(filename\[, options\])
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### `new Worker(filename[, options])`
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* `filename` {string} The path to the Worker’s main script. Must be
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either an absolute path or a relative path (i.e. relative to the
@@ -520,7 +520,7 @@ if (isMainThread) {
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will be thrown if the object cannot be cloned (e.g. because it contains
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`function`s).
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### Event: 'error'
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### Event: `'error'`
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<!-- YAML
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@@ -530,7 +530,7 @@ added: v10.5.0
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The `'error'` event is emitted if the worker thread throws an uncaught
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exception. In that case, the worker will be terminated.
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### Event: 'exit'
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### Event: `'exit'`
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<!-- YAML
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@@ -542,7 +542,7 @@ exited by calling [`process.exit()`][], the `exitCode` parameter will be the
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passed exit code. If the worker was terminated, the `exitCode` parameter will
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be `1`.
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### Event: 'message'
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### Event: `'message'`
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<!-- YAML
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@@ -553,15 +553,15 @@ The `'message'` event is emitted when the worker thread has invoked
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[`require('worker_threads').parentPort.postMessage()`][].
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See the [`port.on('message')`][] event for more details.
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### Event: 'online'
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### Event: `'online'`
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<!-- YAML
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added: v10.5.0
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-->
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The `'online'` event is emitted when the worker thread has started executing
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JavaScript code.
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### worker.postMessage(value\[, transferList\])
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### `worker.postMessage(value[, transferList])`
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<!-- YAML
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@@ -573,7 +573,7 @@ Send a message to the worker that will be received via
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[`require('worker_threads').parentPort.on('message')`][].
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See [`port.postMessage()`][] for more details.
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### worker.ref()
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### `worker.ref()`
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<!-- YAML
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@@ -583,7 +583,7 @@ Opposite of `unref()`, calling `ref()` on a previously `unref()`ed worker will
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behavior). If the worker is `ref()`ed, calling `ref()` again will have
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no effect.
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### worker.stderr
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### `worker.stderr`
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<!-- YAML
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added: v10.5.0
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-->
@@ -595,7 +595,7 @@ inside the worker thread. If `stderr: true` was not passed to the
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[`Worker`][] constructor, then data will be piped to the parent thread's
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[`process.stderr`][] stream.
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### worker.stdin
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### `worker.stdin`
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<!-- YAML
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added: v10.5.0
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@@ -606,7 +606,7 @@ If `stdin: true` was passed to the [`Worker`][] constructor, this is a
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writable stream. The data written to this stream will be made available in
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the worker thread as [`process.stdin`][].
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### worker.stdout
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### `worker.stdout`
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<!-- YAML
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@@ -618,7 +618,7 @@ inside the worker thread. If `stdout: true` was not passed to the
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[`Worker`][] constructor, then data will be piped to the parent thread's
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[`process.stdout`][] stream.
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### worker.terminate()
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### `worker.terminate()`
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<!-- YAML
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changes:
@@ -636,7 +636,7 @@ Stop all JavaScript execution in the worker thread as soon as possible.
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Returns a Promise for the exit code that is fulfilled when the
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[`'exit'` event][] is emitted.
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### worker.threadId
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### `worker.threadId`
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<!-- YAML
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@@ -647,7 +647,7 @@ An integer identifier for the referenced thread. Inside the worker thread,
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it is available as [`require('worker_threads').threadId`][].
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This value is unique for each `Worker` instance inside a single process.
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### worker.unref()
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### `worker.unref()`
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<!-- YAML
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added: v10.5.0
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-->

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