71 lines
1.7 KiB
JavaScript
71 lines
1.7 KiB
JavaScript
goog.loadModule(function(exports) {
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"use strict";
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goog.module("goog.async.WorkQueue");
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goog.module.declareLegacyNamespace();
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const FreeList = goog.require("goog.async.FreeList");
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const {assert} = goog.require("goog.asserts");
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class WorkQueue {
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constructor() {
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this.workHead_ = null;
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this.workTail_ = null;
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}
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add(fn, scope) {
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const item = this.getUnusedItem_();
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item.set(fn, scope);
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if (this.workTail_) {
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this.workTail_.next = item;
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this.workTail_ = item;
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} else {
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assert(!this.workHead_);
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this.workHead_ = item;
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this.workTail_ = item;
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}
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}
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remove() {
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let item = null;
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if (this.workHead_) {
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item = this.workHead_;
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this.workHead_ = this.workHead_.next;
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if (!this.workHead_) {
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this.workTail_ = null;
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}
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item.next = null;
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}
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return item;
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}
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returnUnused(item) {
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WorkQueue.freelist_.put(item);
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}
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getUnusedItem_() {
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return WorkQueue.freelist_.get();
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}
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}
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WorkQueue.DEFAULT_MAX_UNUSED = goog.define("goog.async.WorkQueue.DEFAULT_MAX_UNUSED", 100);
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WorkQueue.freelist_ = new FreeList(() => {
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return new WorkItem();
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}, item => {
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return item.reset();
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}, WorkQueue.DEFAULT_MAX_UNUSED);
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class WorkItem {
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constructor() {
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this.fn = null;
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this.scope = null;
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this.next = null;
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}
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set(fn, scope) {
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this.fn = fn;
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this.scope = scope;
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this.next = null;
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}
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reset() {
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this.fn = null;
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this.scope = null;
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this.next = null;
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}
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}
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exports = WorkQueue;
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return exports;
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});
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//# sourceMappingURL=goog.async.workqueue.js.map
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