File: Lock.js

package info (click to toggle)
chromium-browser 41.0.2272.118-1
  • links: PTS, VCS
  • area: main
  • in suites: jessie-kfreebsd
  • size: 2,189,132 kB
  • sloc: cpp: 9,691,462; ansic: 3,341,451; python: 712,689; asm: 518,779; xml: 208,926; java: 169,820; sh: 119,353; perl: 68,907; makefile: 28,311; yacc: 13,305; objc: 11,385; tcl: 3,186; cs: 2,225; sql: 2,217; lex: 2,215; lisp: 1,349; pascal: 1,256; awk: 407; ruby: 155; sed: 53; php: 14; exp: 11
file content (48 lines) | stat: -rw-r--r-- 1,066 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

/**
 * @constructor
 * @extends {WebInspector.Object}
 */
WebInspector.Lock = function()
{
    this._count = 0; // Reentrant.
}

/**
 * @enum {string}
 */
WebInspector.Lock.Events = {
    StateChanged: "StateChanged"
}

WebInspector.Lock.prototype = {
    /**
     * @return {boolean}
     */
    isAcquired: function()
    {
        return !!this._count;
    },

    acquire: function()
    {
        if (++this._count === 1)
            this.dispatchEventToListeners(WebInspector.Lock.Events.StateChanged);
    },

    release: function()
    {
        --this._count;
        if (this._count < 0) {
            console.error("WebInspector.Lock acquire/release calls are unbalanced " + new Error().stack);
            return;
        }
        if (!this._count)
            this.dispatchEventToListeners(WebInspector.Lock.Events.StateChanged);
    },

    __proto__: WebInspector.Object.prototype
}