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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
// TODO(petamoriken): enable prefer-primordials for node polyfills
// deno-lint-ignore-file prefer-primordials
import { primordials } from "ext:core/mod.js";
const {
MapPrototypeDelete,
MapPrototypeSet,
SafeMap,
} = primordials;
import { inspect } from "ext:deno_node/internal/util/inspect.mjs";
import {
validateFunction,
validateNumber,
} from "ext:deno_node/internal/validators.mjs";
import { ERR_OUT_OF_RANGE } from "ext:deno_node/internal/errors.ts";
import { emitWarning } from "node:process";
import {
clearTimeout as clearTimeout_,
setImmediate as setImmediate_,
setInterval as setInterval_,
setTimeout as setTimeout_,
} from "ext:deno_web/02_timers.js";
// Timeout values > TIMEOUT_MAX are set to 1.
export const TIMEOUT_MAX = 2 ** 31 - 1;
export const kTimerId = Symbol("timerId");
export const kTimeout = Symbol("timeout");
const kRefed = Symbol("refed");
const createTimer = Symbol("createTimer");
/**
* The keys in this map correspond to the key ID's in the spec's map of active
* timers. The values are the timeout's status.
*
* @type {Map<number, Timeout>}
*/
export const activeTimers = new SafeMap();
// Timer constructor function.
export function Timeout(callback, after, args, isRepeat, isRefed) {
if (typeof after === "number" && after > TIMEOUT_MAX) {
after = 1;
}
this._idleTimeout = after;
this._onTimeout = callback;
this._timerArgs = args;
this._isRepeat = isRepeat;
this._destroyed = false;
this[kRefed] = isRefed;
this[kTimerId] = this[createTimer]();
}
Timeout.prototype[createTimer] = function () {
const callback = this._onTimeout;
const cb = (...args) => {
if (!this._isRepeat) {
MapPrototypeDelete(activeTimers, this[kTimerId]);
}
return callback.bind(this)(...args);
};
const id = this._isRepeat
? setInterval_(cb, this._idleTimeout, ...this._timerArgs)
: setTimeout_(cb, this._idleTimeout, ...this._timerArgs);
if (!this[kRefed]) {
Deno.unrefTimer(id);
}
MapPrototypeSet(activeTimers, id, this);
return id;
};
// Make sure the linked list only shows the minimal necessary information.
Timeout.prototype[inspect.custom] = function (_, options) {
return inspect(this, {
...options,
// Only inspect one level.
depth: 0,
// It should not recurse.
customInspect: false,
});
};
Timeout.prototype.refresh = function () {
if (!this._destroyed) {
clearTimeout_(this[kTimerId]);
this[kTimerId] = this[createTimer]();
}
return this;
};
Timeout.prototype.unref = function () {
if (this[kRefed]) {
this[kRefed] = false;
Deno.unrefTimer(this[kTimerId]);
}
return this;
};
Timeout.prototype.ref = function () {
if (!this[kRefed]) {
this[kRefed] = true;
Deno.refTimer(this[kTimerId]);
}
return this;
};
Timeout.prototype.hasRef = function () {
return this[kRefed];
};
Timeout.prototype[Symbol.toPrimitive] = function () {
return this[kTimerId];
};
// Immediate constructor function.
export function Immediate(callback, ...args) {
this._immediateId = setImmediate_(callback, ...args);
}
// Make sure the linked list only shows the minimal necessary information.
Immediate.prototype[inspect.custom] = function (_, options) {
return inspect(this, {
...options,
// Only inspect one level.
depth: 0,
// It should not recurse.
customInspect: false,
});
};
// FIXME(nathanwhit): actually implement {ref,unref,hasRef} once deno_core supports it
Immediate.prototype.unref = function () {
return this;
};
Immediate.prototype.ref = function () {
return this;
};
Immediate.prototype.hasRef = function () {
return true;
};
/**
* @param {number} msecs
* @param {string} name
* @returns
*/
export function getTimerDuration(msecs, name) {
validateNumber(msecs, name);
if (msecs < 0 || !Number.isFinite(msecs)) {
throw new ERR_OUT_OF_RANGE(name, "a non-negative finite number", msecs);
}
// Ensure that msecs fits into signed int32
if (msecs > TIMEOUT_MAX) {
emitWarning(
`${msecs} does not fit into a 32-bit signed integer.` +
`\nTimer duration was truncated to ${TIMEOUT_MAX}.`,
"TimeoutOverflowWarning",
);
return TIMEOUT_MAX;
}
return msecs;
}
export function setUnrefTimeout(callback, timeout, ...args) {
validateFunction(callback, "callback");
return new Timeout(callback, timeout, args, false, false);
}
export default {
getTimerDuration,
kTimerId,
kTimeout,
setUnrefTimeout,
Timeout,
TIMEOUT_MAX,
};
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