cocoscreator查内存泄露，绘制内存监视器

     var textures = cc.textureCache.getAllTextures();
        textures.sort(function (a, b) {
            return b.getPixelHeight() * b.getPixelWidth() - a.getPixelHeight() * a.getPixelWidth();
        });
        for (var key in textures) {
            var selfTexture = textures[key];
            var url = selfTexture.url;
            var num = (selfTexture.getPixelWidth() * selfTexture.getPixelHeight() * (url.indexOf('.jpg') > 0 ? 3 : 4) / 1024 / 1024).toFixed(2);
            console.log(url + ".........." + num + "M");
        }

   let Loader: any = cc.loader;
        this.dumpLabel.string = `当前资源总数:${Object.keys(Loader._cache).length}`;