@inst/vscode-bin-darwin
Version:
BINARY ONLY - VSCode binary deployment for macOS
66 lines (65 loc) • 2.3 kB
JavaScript
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
;
var events_1 = require('events');
var assert_1 = require('assert');
var _gcsignals = require('../build/Release/gcsignals');
;
/**
* Create a new GC signal. When being garbage collected the passed
* value is stored for later consumption.
*/
exports.GCSignal = _gcsignals.GCSignal;
var _emitter = new events_1.EventEmitter();
/**
* Consume ids of garbage collected signals.
*/
function consumeSignals() {
var signals = Object.freeze(_gcsignals.consumeSignals());
if (signals.length > 0) {
// remove form list of active ids
for (var _i = 0, signals_1 = signals; _i < signals_1.length; _i++) {
var id = signals_1[_i];
activeIds.delete(id);
}
// send event
_emitter.emit('gc', signals);
}
return signals;
}
exports.consumeSignals = consumeSignals;
/**
* Get called when any call to `consumeSignals` yielded in a result.
*/
function onDidGarbageCollectSignals(callback) {
assert_1.ok(typeof callback === 'function');
_emitter.addListener('gc', callback);
return {
dispose: function () {
if (callback) {
_emitter.removeListener('gc', callback);
callback = null;
}
}
};
}
exports.onDidGarbageCollectSignals = onDidGarbageCollectSignals;
// --- util
var activeSignals = new WeakMap();
var activeIds = new Set();
/**
* Utility method to store a weak reference of an object
* along with an identifier. The id will be used to track
* garbage collection of the object.
*/
function trackGarbageCollection(obj, id) {
assert_1.ok(typeof obj === 'object', 'obj must be an object');
assert_1.ok(typeof id === 'number', 'id must be a number');
assert_1.ok(!activeIds.has(id), "object-id (" + id + ") in use");
activeIds.add(id);
activeSignals.set(obj, new exports.GCSignal(id));
return id;
}
exports.trackGarbageCollection = trackGarbageCollection;