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• International Radio Operators Alphabet in F# &amp; Silverlight &ndash; Part 2

  - by MarkPearl

  So the brunt of my my very complex F# code has been done. Now it’s just putting the Silverlight stuff in. The first thing I did was add a new project to my solution. I gave it a name and VS2010 did the rest of the magic in creating the .Web project etc. In this instance because I want to take the MVVM approach and make use of commanding I have decided to make the frontend a Silverlight4 project. I now need move my F# code into a proper Silverlight Library. Warning – when you create the Silverlight Library VS2010 will ask you whether you want it to be based on Silverlight3 or Silverlight4. I originally went for Silverlight4 only to discover when I tried to compile my solution that I was given an error… Error 12 F# runtime for Silverlight version v4.0 is not installed. Please go to http://go.microsoft.com/fwlink/?LinkId=177463 to download and install matching.. After asking around I discovered that the Silverlight4 F# runtime is not available yet. No problem, the suggestion was to change the F# Silverlight Library to a Silverlight3 project however when going to the properties of the project file – even though I changed it to Silverlight3, VS2010 did not like it and kept reverting it to a Silverlight4 project. After a few minutes of scratching my head I simply deleted Silverlight4 F# Library project and created a new F# Silverlight Library project in Silverlight3 and VS2010 was happy. Now that the project structure is set up, rest is fairly simple. You need to add the Silverlight Library as a reference to the C# Silverlight Front End. Then setup your views, since I was following the MVVM pattern I made a Views & ViewModel folder and set up the relevant View and ViewModels. The MainPageViewModel file looks as follows using System; using System.Net; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Ink; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Shapes; using System.Collections.ObjectModel; namespace IROAFrontEnd.ViewModels { public class MainPageViewModel : ViewModelBase { private string _iroaString; private string _inputCharacters; public string InputCharacters { get { return _inputCharacters; } set { if (_inputCharacters != value) { _inputCharacters = value; OnPropertyChanged("InputCharacters"); } } } public string IROAString { get { return _iroaString; } set { if (_iroaString != value) { _iroaString = value; OnPropertyChanged("IROAString"); } } } public ICommand MySpecialCommand { get { return new MyCommand(this); } } public class MyCommand : ICommand { readonly MainPageViewModel _myViewModel; public MyCommand(MainPageViewModel myViewModel) { _myViewModel = myViewModel; } public event EventHandler CanExecuteChanged; public bool CanExecute(object parameter) { return true; } public void Execute(object parameter) { var result = ModuleMain.ConvertCharsToStrings(_myViewModel.InputCharacters); var newString = ""; foreach (var Item in result) { newString += Item + " "; } _myViewModel.IROAString = newString.Trim(); } } } } One of the features I like in Silverlight4 is the new commanding. You will notice in my I have put the code under the command execute to reference to my F# module. At the moment this could be cleaned up even more, but will suffice for now.. public void Execute(object parameter) { var result = ModuleMain.ConvertCharsToStrings(_myViewModel.InputCharacters); var newString = ""; foreach (var Item in result) { newString += Item + " "; } _myViewModel.IROAString = newString.Trim(); } I then needed to set the view up. If we have a look at the MainPageView.xaml the xaml code will look like the following…. Nothing to fancy, but battleship grey for now… take careful note of the binding of the command in the button to MySpecialCommand which was created in the ViewModel. <UserControl x:Class="IROAFrontEnd.Views.MainPageView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="400"> <Grid x:Name="LayoutRoot" Background="White"> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <TextBox Grid.Row="0" Text="{Binding InputCharacters, Mode=TwoWay}"/> <Button Grid.Row="1" Command="{Binding MySpecialCommand}"> <TextBlock Text="Generate"/> </Button> <TextBlock Grid.Row="2" Text="{Binding IROAString}"/> </Grid> </UserControl> Finally in the App.xaml.cs file we need to set the View and link it to the ViewModel. private void Application_Startup(object sender, StartupEventArgs e) { var myView = new MainPageView(); var myViewModel = new MainPageViewModel(); myView.DataContext = myViewModel; this.RootVisual = myView; }   Once this is done – hey presto – it worked. I typed in some “Test Input” and clicked the generate button and the correct Radio Operators Alphabet was generated. And that’s the end of my first very basic F# Silverlight application.

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• CodePlex Daily Summary for Monday, March 14, 2011

  CodePlex Daily Summary for Monday, March 14, 2011Popular ReleasesProDinner - ASP.NET MVC EF4 Code First DDD jQuery Sample App: first release: ProDinner is an ASP.NET MVC sample application, it uses DDD, EF4 Code First for Data Access, jQuery and MvcProjectAwesome for Web UI, it has Multi-language User Interface Features: CRUD and search operations for entities Multi-Language User Interface upload and crop Images (make thumbnail) for meals pagination using "more results" button very rich and responsive UI (using Mvc Project Awesome) Multiple UI themes (using jQuery UI themes)Personal Activity Monitor - increas your productivity by eliminating timewasters: Personal Activity Monitor v0.1.2: removed PreEmptive monitoring attributes - maybe will be back in the future added scrollbars to the list of apps :)BEPUphysics: BEPUphysics v0.15.0: BEPUphysics v0.15.0!LiveChat Starter Kit: LCSK v1.1: This release contains couple of new features and bug fixes including: Features: Send chat transcript via email Operator can now invite visitor to chat (pro-active chat request) Bug Fixes: Operator management (Save and Delete) bug fixes Operator Console chat small fixesIronRuby: 1.1.3: IronRuby 1.1.3 is a servicing release that keeps on improving compatibility with Ruby 1.9.2 and includes IronRuby integration to Visual Studio 2010. We decided to drop 1.8.6 compatibility mode in all post-1.0 releases. We recommend using IronRuby 1.0 if you need 1.8.6 compatibility. The main purpose of this release is to sync with IronPython 2.7 release, i.e. to keep the Dynamic Language Runtime that both these languages build on top shareable. This release also fixes a few bugs: 5763 Use...SQL Server PowerShell Extensions: 2.3.2.1 Production: Release 2.3.2.1 implements SQLPSX as PowersShell version 2.0 modules. SQLPSX consists of 13 modules with 163 advanced functions, 2 cmdlets and 7 scripts for working with ADO.NET, SMO, Agent, RMO, SSIS, SQL script files, PBM, Performance Counters, SQLProfiler, Oracle and MySQL and using Powershell ISE as a SQL and Oracle query tool. In addition optional backend databases and SQL Server Reporting Services 2008 reports are provided with SQLServer and PBM modules. See readme file for details.Image.Viewer: 2011.2: Whats new for Image.Viewer 2011.2: New open from file New about dialog Minor Bug Fix's, improvements and speed upsIronPython: 2.7: On behalf of the IronPython team, I'm very pleased to announce the release of IronPython 2.7. This release contains all of the language features of Python 2.7, as well as several previously missing modules and numerous bug fixes. IronPython 2.7 also includes built-in Visual Studio support through IronPython Tools for Visual Studio. IronPython 2.7 requires .NET 4.0 or Silverlight 4. To download IronPython 2.7, visit http://ironpython.codeplex.com/releases/view/54498. Any bugs should be report...XML Explorer: XML Explorer 4.0.2: Changes in 4.0: This release is built on the Microsoft .NET Framework 4 Client Profile. Changed XSD validation to use the schema specified by the XML documents. Added a VS style Error List, double-clicking an error takes you to the offending node. XPathNavigator schema validation finally gives SourceObject (was fixed in .NET 4). Added Namespaces window and better support for XPath expressions in documents with a default namespace. Added ExpandAll and CollapseAll toolbar buttons (in a...Mobile Device Detection and Redirection: 1.0.0.0: Stable Release 51 Degrees.mobi Foundation has been in beta for some time now and has been used on thousands of websites worldwide. We’re now highly confident in the product and have designated this release as stable. We recommend all users update to this version. New Capabilities MappingsTo improve compatibility with other libraries some new .NET capabilities are now populated with wurfl data: “maximumRenderedPageSize” populated with “max_deck_size” “rendersBreaksAfterWmlAnchor” populated ...ASP.NET MVC Project Awesome, jQuery Ajax helpers (controls): 1.7.3: A rich set of helpers (controls) that you can use to build highly responsive and interactive Ajax-enabled Web applications. These helpers include Autocomplete, AjaxDropdown, Lookup, Confirm Dialog, Popup Form, Popup and Pager added interactive search for the lookupWPF Inspector: WPF Inspector 0.9.7: New Features in Version 0.9.7 - Support for .NET 3.5 and 4.0 - Multi-inspection of the same process - Property-Filtering for multiple keywords e.g. "Height Width" - Smart Element Selection - Select Controls by clicking CTRL, - Select Template-Parts by clicking CTRL+SHIFT - Possibility to hide the element adorner (over the context menu on the visual tree) - Many bugfixes??????????: All-In-One Code Framework ??? 2011-03-10: http://download.codeplex.com/Project/Download/FileDownload.aspx?ProjectName=1codechs&DownloadId=216140 ??，????。??????????All-In-One Code Framework ???，??20?Sample！！????，?????。http://i3.codeplex.com/Project/Download/FileDownload.aspx?ProjectName=1code&DownloadId=128165 ASP.NET ??： CSASPNETBingMaps VBASPNETRemoteUploadAndDownload CS/VBASPNETSerializeJsonString CSASPNETIPtoLocation CSASPNETExcelLikeGridView ....... Winform??： FTPDownload FTPUpload MultiThreadedWebDownloader...Rawr: Rawr 4.1.0: Rawr is now web-based. The link to use Rawr4 is: http://elitistjerks.com/rawr.phpThis is the Cataclysm Release. More details can be found at the following link http://rawr.codeplex.com/Thread/View.aspx?ThreadId=237262 As of the 4.0.16 release, you can now also begin using the new Downloadable WPF version of Rawr!This is a Release of the WPF version, most of the general issues have been resolved. If you have a problem, please follow the Posting Guidelines and put it into the Issue Tracker. Whe...PHP Manager for IIS: PHP Manager 1.1.2 for IIS 7: This is a localization release of PHP Manager for IIS 7. It contains all the functionality available in 56962 plus a few bug fixes (see change list for more details). Most importantly this release is translated into five languages: German - the translation is provided by Christian Graefe Dutch - the translation is provided by Harrie Verveer Turkish - the translation is provided by Yusuf Oztürk Japanese - the translation is provided by Kenichi Wakasa Russian - the translation is provid...TweetSharp: TweetSharp v2.0.0: Documentation for this release may be found at http://tweetsharp.codeplex.com/wikipage?title=UserGuide&referringTitle=Documentation. Beta ChangesAdded user streams support Serialization is not attempted for Twitter 5xx errors Fixes based on feedback Third Party Library VersionsHammock v1.2.0: http://hammock.codeplex.com Json.NET 4.0 Release 1: http://json.codeplex.comOffice Web.UI: Version 2.4: After having lost all modifications done for 2.3. I finally did it again... Have a look at http://www.officewebui.com/change-log Also, the documentation continues to grow... http://www.officewebui.com/category/kb ThanksmyCollections: Version 1.3: New in version 1.3 : Added Editor management for Books Added Amazon API for Books Us, Fr, De Added Amazon Us, Fr, De for Movies Added The MovieDB for Fr and De Added Author for Books Added Editor and Platform for Games Added Amazon Us, De for Games Added Studio for XXX Added Background for XXX Bug fixing with Softonic API Bug fixing with IMDB UI improvement Removed GraceNote Added Amazon Us,Fr, De for Series Added TVDB Fr and De for Series Added Tracks for Musi...patterns & practices : Composite Services: Composite Services Guidance - CTP2: Overview The Composite Services guidance (codename Reykjavik) provides best practices and capabilities for applying industry-known SOA design patterns when building robust, connected, service-oriented composite enterprise applications. These capabilities are implemented as a set of reusable components for analytic tracing, service virtualization, metadata centralization and versioning, and policy centralization as well as exception management, included in this release. Changes in this CTP ...Python Tools for Visual Studio: 1.0 Beta 1: Beta 1You can't install IronPython Tools for Visual Studio side-by-side with Python Tools for Visual Studio. A race condition sometimes causes local MPI debugging to miss breakpoints. When MPI jobs on a cluster fail they don’t get cleaned up correctly, which can cause debugging to stall because the associated MPI job is stuck in the queue. The "Threads" view has a race condition which can cause it not to display properly at times. VS2010 shortcuts that are pinned to the taskbar are so...New ProjectsASPRazorWebGrid: ASPRazorWebGrid can be used as an alternative for the built-in WebGrid in ASP.NET MVC3 using Razor. Features: - Server-side sorting and paging - Choice between url grid sort/paging parameters or page postback - Clean pager layoutBert Automation Framework: Bert Automation Framework. Bert can be leveraged to create automated tests for Windows or Web based applications. Framework is developed in C# using Visual Studio 2010, Microsofts AutomationUI and/or WATIN and be used to create automated tests. CasinoBot - A C# IRC gambling bot: CasinoBot is an IRC bot which allows you to play eight games. You can play single- and multiplayer games like hangman or slot. Includes a currency system, multi-channel support and a huge wordlist. The bot is written in C# using the SmartIRC4Net library.Cheque Management: This is a Cheque management project that help people to manage their cheque.CityLife: CityLife is a silverlight gameEmpty Razor Generator: A stripped down single file generator powered by Razor. Similiar to other generators available with the exception that is an absolute minimal implmentation. It's easy to tweak and very flexible. Driven in part because I would love to see it on WPF/WP7/Silverlight.ExtendedWorkFlow: Umbraco Extended WorkFlow to add extra functionality to create workflow process maps that can execute assemblies via commands and that have set stages. All stages, action and commands are logged within the umbraco audit trail. States and Action are also locked to user or role.Fluent CodeDOM: A library which allows you to work with CodeDOM in a way that is similar to the way you write your code. The library allows you to write your generated code much faster and make it more readable. Also, the usage of this library is very intuitive.FT: wftGoogle Map control for ASP.NET MVC: The control wraps Google maps API simplifying the use of Google maps in ASP.NET MVC applications. Based on Telerik Extensions for ASP.NET MVC this control shows how easy is to extend the Telerik framawork by building your own controls for ASP.NET MVC.GooNews - A WP7 Application: A Windows Phone 7 application. iTimeTrack IssueTracker: The iTimeTrack IssueTracker project is a (the AGPL open-source) subset of of the iTimeTrack time and issue tracker app that you can customize for your organizations use.jcompare: jcomparejuwenxue: submit some free bookKinect Finger Paint: Kinect Finger Paint is a Kinect application build on the OpenNI framework. It is meant as a tutorial and playground for experimenting with the Kinect interface.MTA_XNA_11_B: hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hh hProgrammingPractice: VC++ Programming PracticeSimple Backlog for Visual Studio: An enhanced task list for VS 2010, designed to make it easier to manage a backlog of features. Written in C# and WPF. Released under the Apache 2.0 licence.Text Reader: Text reader allows you to enter a text and it will read it up for you using TTS in windows. It's developed in C#.TrainTraX: TrainTraX is a system for training and certifying users with simple multiple choice question tests.Windows Charting: A windows charting application that uses microsoft charting controls for visual studio 2008WPFReveil: WPFReveil is a digital clock control on WPF. This project is composed two elements. WPFReveil.App is the application. WPFReveil contains the control clock.

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• Anything Mouse Like Isn't Seen by Ubuntu 13.10

  - by belkinsa

  I have a upgraded 13.10 from 13.04 and today this issue of anything that is mouse-like is not seen by Ubuntu. The only input device that works is my Wacom Tablet and it's pen. I already checked for updates and have the latest updates for the Ubuntu system. Here is the lsusb output: Bus 002 Device 002: ID 04f2:b209 Chicony Electronics Co., Ltd Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 002: ID 056a:00b8 Wacom Co., Ltd Intuos4 4x6 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub This is issue a bug or how to fix it? I can't even use the Live USB of Ubuntu 13.10 to fix the issue. EDIT 1: Seems that Ubuntu isn't seeing the clicks done by a mouse if it's the Wacom tablet. EDIT 2: I think it's a bug but I need help to report it.

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• Create a Social Community of Trust Along With Your Federal Digital Services Governance

  - by TedMcLaughlan

  The Digital Services Governance Recommendations were recently released, supporting the US Federal Government's Digital Government Strategy Milestone Action #4.2 to establish agency-wide governance structures for developing and delivering digital services. Figure 1 - From: "Digital Services Governance Recommendations" While extremely important from a policy and procedure perspective within an Agency's information management and communications enterprise, these recommendations only very lightly reference perhaps the most important success enabler - the "Trusted Community" required for ultimate usefulness of the services delivered. By "ultimate usefulness", I mean the collection of public, transparent properties around government information and digital services that include social trust and validation, social reach, expert respect, and comparative, standard measures of relative value. In other words, do the digital services meet expectations of the public, social media ecosystem (people AND machines)? A rigid governance framework, controlling by rules, policies and roles the creation and dissemination of digital services may meet the expectations of direct end-users and most stakeholders - including the agency information stewards and security officers. All others who may share comments about the services, write about them, swap or review extracts, repackage, visualize or otherwise repurpose the output for use in entirely unanticipated, social ways - these "stakeholders" will not be governed, but may observe guidance generated by a "Trusted Community". As recognized members of the trusted community, these stakeholders may ultimately define the right scope and detail of governance that all other users might observe, promoting and refining the usefulness of the government product as the social ecosystem expects. So, as part of an agency-centric governance framework, it's advised that a flexible governance model be created for stewarding a "Community of Trust" around the digital services. The first steps follow the approach outlined in the Recommendations: Step 1: Gather a Core Team In addition to the roles and responsibilities described, perhaps a set of characteristics and responsibilities can be developed for the "Trusted Community Steward/Advocate" - i.e. a person or team who (a) are entirely cognizant of and respected within the external social media communities, and (b) are trusted both within the agency and outside as practical, responsible, non-partisan communicators of useful information. The may seem like a standard Agency PR/Outreach team role - but often an agency or stakeholder subject matter expert with a public, active social persona works even better. Step 2: Assess What You Have In addition to existing, agency or stakeholder decision-making bodies and assets, it's important to take a PR/Marketing view of the social ecosystem. How visible are the services across the social channels utilized by current or desired constituents of your agency? What's the online reputation of your agency and perhaps the service(s)? Is Search Engine Optimization (SEO) a facet of external communications/publishing lifecycles? Who are the public champions, instigators, value-adders for the digital services, or perhaps just influential "communicators" (i.e. with no stake in the game)? You're essentially assessing your market and social presence, and identifying the actors (including your own agency employees) in the existing community of trust. Step 3: Determine What You Want The evolving Community of Trust will most readily absorb, support and provide feedback regarding "Core Principles" (Element B of the "six essential elements of a digital services governance structure") shared by your Agency, and obviously play a large, though probably very unstructured part in Element D "Stakeholder Input and Participation". Plan for this, and seek input from the social media community with respect to performance metrics - these should be geared around the outcome and growth of the trusted communities actions. How big and active is this community? What's the influential reach of this community with respect to particular messaging or campaigns generated by the Agency? What's the referral rate TO your digital services, FROM channels owned or operated by members of this community? (this requires governance with respect to content generation inclusive of "markers" or "tags"). At this point, while your Agency proceeds with steps 4 ("Build/Validate the Governance Structure") and 5 ("Share, Review, Upgrade"), the Community of Trust might as well just get going, and start adding value and usefulness to the existing conversations, existing data services - loosely though directionally-stewarded by your trusted advocate(s). Why is this an "Enterprise Architecture" topic? Because it's increasingly apparent that a Public Service "Enterprise" is not wholly contained within Agency facilities, firewalls and job titles - it's also manifested in actual, perceived or representative forms outside the walls, on the social Internet. An Agency's EA model and resulting investments both facilitate and are impacted by the "Social Enterprise". At Oracle, we're very active both within our Enterprise and outside, helping foster social architectures that enable truly useful public services, digital or otherwise.

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• How to Use Steam In-Home Streaming

  - by Chris Hoffman

  Steam’s In-Home Streaming is now available to everyone, allowing you to stream PC games from one PC to another PC on the same local network. Use your gaming PC to power your laptops and home theater system. This feature doesn’t allow you to stream games over the Internet, only the same local network. Even if you tricked Steam, you probably wouldn’t get good streaming performance over the Internet. Why Stream? When you use Steam In-Home streaming, one PC sends its video and audio to another PC. The other PC views the video and audio like it’s watching a movie, sending back mouse, keyboard, and controller input to the other PC. This allows you to have a fast gaming PC power your gaming experience on slower PCs. For example, you could play graphically demanding games on a laptop in another room of your house, even if that laptop has slower integrated graphics. You could connect a slower PC to your television and use your gaming PC without hauling it into a different room in your house. Streaming also enables cross-platform compatibility. You could have a Windows gaming PC and stream games to a Mac or Linux system. This will be Valve’s official solution for compatibility with old Windows-only games on the Linux (Steam OS) Steam Machines arriving later this year. NVIDIA offers their own game streaming solution, but it requires certain NVIDIA graphics hardware and can only stream to an NVIDIA Shield device. How to Get Started In-Home Streaming is simple to use and doesn’t require any complex configuration — or any configuration, really. First, log into the Steam program on a Windows PC. This should ideally be a powerful gaming PC with a powerful CPU and fast graphics hardware. Install the games you want to stream if you haven’t already — you’ll be streaming from your PC, not from Valve’s servers. (Valve will eventually allow you to stream games from Mac OS X, Linux, and Steam OS systems, but that feature isn’t yet available. You can still stream games to these other operating systems.) Next, log into Steam on another computer on the same network with the same Steam username. Both computers have to be on the same subnet of the same local network. You’ll see the games installed on your other PC in the Steam client’s library. Click the Stream button to start streaming a game from your other PC. The game will launch on your host PC, and it will send its audio and video to the PC in front of you. Your input on the client will be sent back to the server. Be sure to update Steam on both computers if you don’t see this feature. Use the Steam > Check for Updates option within Steam and install the latest update. Updating to the latest graphics drivers for your computer’s hardware is always a good idea, too. Improving Performance Here’s what Valve recommends for good streaming performance: Host PC: A quad-core CPU for the computer running the game, minimum. The computer needs enough processor power to run the game, compress the video and audio, and send it over the network with low latency. Streaming Client: A GPU that supports hardware-accelerated H.264 decoding on the client PC. This hardware is included on all recent laptops and PCs. Ifyou have an older PC or netbook, it may not be able to decode the video stream quickly enough. Network Hardware: A wired network connection is ideal. You may have success with wireless N or AC networks with good signals, but this isn’t guaranteed. Game Settings: While streaming a game, visit the game’s setting screen and lower the resolution or turn off VSync to speed things up. In-Home Steaming Settings: On the host PC, click Steam > Settings and select In-Home Streaming to view the In-Home Streaming settings. You can modify your streaming settings to improve performance and reduce latency. Feel free to experiment with the options here and see how they affect performance — they should be self-explanatory. Check Valve’s In-Home Streaming documentation for troubleshooting information. You can also try streaming non-Steam games. Click Games > Add a Non-Steam Game to My Library on your host PC and add a PC game you have installed elsewhere on your system. You can then try streaming it from your client PC. Valve says this “may work but is not officially supported.” Image Credit: Robert Couse-Baker on Flickr, Milestoned on Flickr

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• Can't install graphic drivers in 12.04

  - by yinon

  The driver is ATI/AMD proprietary FGLRX graphics driver. After clicking Activate, it asks for my password and starts downloading. Then it shows an error message: 2012-10-03 16:16:04,227 DEBUG: updating <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> 2012-10-03 16:16:06,172 DEBUG: reading modalias file /lib/modules/3.2.0-29-generic-pae/modules.alias 2012-10-03 16:16:06,383 DEBUG: reading modalias file /usr/share/jockey/modaliases/b43 2012-10-03 16:16:06,386 DEBUG: reading modalias file /usr/share/jockey/modaliases/disable-upstream-nvidia 2012-10-03 16:16:06,456 DEBUG: loading custom handler /usr/share/jockey/handlers/pvr-omap4.py 2012-10-03 16:16:06,506 WARNING: modinfo for module omapdrm_pvr failed: ERROR: modinfo: could not find module omapdrm_pvr 2012-10-03 16:16:06,509 DEBUG: Instantiated Handler subclass __builtin__.PVROmap4Driver from name PVROmap4Driver 2012-10-03 16:16:06,682 DEBUG: PowerVR SGX proprietary graphics driver for OMAP 4 not available 2012-10-03 16:16:06,682 DEBUG: loading custom handler /usr/share/jockey/handlers/cdv.py 2012-10-03 16:16:06,727 WARNING: modinfo for module cedarview_gfx failed: ERROR: modinfo: could not find module cedarview_gfx 2012-10-03 16:16:06,728 DEBUG: Instantiated Handler subclass __builtin__.CdvDriver from name CdvDriver 2012-10-03 16:16:06,728 DEBUG: cdv.available: falling back to default 2012-10-03 16:16:06,772 DEBUG: Intel Cedarview graphics driver availability undetermined, adding to pool 2012-10-03 16:16:06,772 DEBUG: loading custom handler /usr/share/jockey/handlers/vmware-client.py 2012-10-03 16:16:06,781 WARNING: modinfo for module vmxnet failed: ERROR: modinfo: could not find module vmxnet 2012-10-03 16:16:06,781 DEBUG: Instantiated Handler subclass __builtin__.VmwareClientHandler from name VmwareClientHandler 2012-10-03 16:16:06,795 DEBUG: VMWare Client Tools availability undetermined, adding to pool 2012-10-03 16:16:06,796 DEBUG: loading custom handler /usr/share/jockey/handlers/fglrx.py 2012-10-03 16:16:06,801 WARNING: modinfo for module fglrx_updates failed: ERROR: modinfo: could not find module fglrx_updates 2012-10-03 16:16:06,805 DEBUG: Instantiated Handler subclass __builtin__.FglrxDriverUpdate from name FglrxDriverUpdate 2012-10-03 16:16:06,805 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:06,833 DEBUG: ATI/AMD proprietary FGLRX graphics driver (post-release updates) availability undetermined, adding to pool 2012-10-03 16:16:06,836 WARNING: modinfo for module fglrx failed: ERROR: modinfo: could not find module fglrx 2012-10-03 16:16:06,840 DEBUG: Instantiated Handler subclass __builtin__.FglrxDriver from name FglrxDriver 2012-10-03 16:16:06,840 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:06,873 DEBUG: ATI/AMD proprietary FGLRX graphics driver availability undetermined, adding to pool 2012-10-03 16:16:06,873 DEBUG: loading custom handler /usr/share/jockey/handlers/dvb_usb_firmware.py 2012-10-03 16:16:06,925 DEBUG: Instantiated Handler subclass __builtin__.DvbUsbFirmwareHandler from name DvbUsbFirmwareHandler 2012-10-03 16:16:06,926 DEBUG: Firmware for DVB cards not available 2012-10-03 16:16:06,926 DEBUG: loading custom handler /usr/share/jockey/handlers/nvidia.py 2012-10-03 16:16:06,961 WARNING: modinfo for module nvidia_96 failed: ERROR: modinfo: could not find module nvidia_96 2012-10-03 16:16:06,967 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver96 from name NvidiaDriver96 2012-10-03 16:16:06,968 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:06,980 DEBUG: XorgDriverHandler(nvidia_96, nvidia-96, None): Disabling as package video ABI xorg-video-abi-10 does not match X.org video ABI xorg-video-abi-11 2012-10-03 16:16:06,980 DEBUG: NVIDIA accelerated graphics driver not available 2012-10-03 16:16:06,983 WARNING: modinfo for module nvidia_current failed: ERROR: modinfo: could not find module nvidia_current 2012-10-03 16:16:06,987 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriverCurrent from name NvidiaDriverCurrent 2012-10-03 16:16:06,987 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,015 DEBUG: NVIDIA accelerated graphics driver availability undetermined, adding to pool 2012-10-03 16:16:07,018 WARNING: modinfo for module nvidia_current_updates failed: ERROR: modinfo: could not find module nvidia_current_updates 2012-10-03 16:16:07,021 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriverCurrentUpdates from name NvidiaDriverCurrentUpdates 2012-10-03 16:16:07,022 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,066 DEBUG: NVIDIA accelerated graphics driver (post-release updates) availability undetermined, adding to pool 2012-10-03 16:16:07,069 WARNING: modinfo for module nvidia_173_updates failed: ERROR: modinfo: could not find module nvidia_173_updates 2012-10-03 16:16:07,072 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver173Updates from name NvidiaDriver173Updates 2012-10-03 16:16:07,073 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,105 DEBUG: NVIDIA accelerated graphics driver (post-release updates) availability undetermined, adding to pool 2012-10-03 16:16:07,112 WARNING: modinfo for module nvidia_173 failed: ERROR: modinfo: could not find module nvidia_173 2012-10-03 16:16:07,118 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver173 from name NvidiaDriver173 2012-10-03 16:16:07,119 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,159 DEBUG: NVIDIA accelerated graphics driver availability undetermined, adding to pool 2012-10-03 16:16:07,166 WARNING: modinfo for module nvidia_96_updates failed: ERROR: modinfo: could not find module nvidia_96_updates 2012-10-03 16:16:07,171 DEBUG: Instantiated Handler subclass __builtin__.NvidiaDriver96Updates from name NvidiaDriver96Updates 2012-10-03 16:16:07,171 DEBUG: nvidia.available: falling back to default 2012-10-03 16:16:07,188 DEBUG: XorgDriverHandler(nvidia_96_updates, nvidia-96-updates, None): Disabling as package video ABI xorg-video-abi-10 does not match X.org video ABI xorg-video-abi-11 2012-10-03 16:16:07,188 DEBUG: NVIDIA accelerated graphics driver (post-release updates) not available 2012-10-03 16:16:07,188 DEBUG: loading custom handler /usr/share/jockey/handlers/madwifi.py 2012-10-03 16:16:07,195 WARNING: modinfo for module ath_pci failed: ERROR: modinfo: could not find module ath_pci 2012-10-03 16:16:07,195 DEBUG: Instantiated Handler subclass __builtin__.MadwifiHandler from name MadwifiHandler 2012-10-03 16:16:07,196 DEBUG: Alternate Atheros "madwifi" driver availability undetermined, adding to pool 2012-10-03 16:16:07,196 DEBUG: loading custom handler /usr/share/jockey/handlers/sl_modem.py 2012-10-03 16:16:07,213 DEBUG: Instantiated Handler subclass __builtin__.SlModem from name SlModem 2012-10-03 16:16:07,234 DEBUG: Software modem not available 2012-10-03 16:16:07,234 DEBUG: loading custom handler /usr/share/jockey/handlers/broadcom_wl.py 2012-10-03 16:16:07,239 WARNING: modinfo for module wl failed: ERROR: modinfo: could not find module wl 2012-10-03 16:16:07,277 DEBUG: Instantiated Handler subclass __builtin__.BroadcomWLHandler from name BroadcomWLHandler 2012-10-03 16:16:07,277 DEBUG: Broadcom STA wireless driver availability undetermined, adding to pool 2012-10-03 16:16:07,278 DEBUG: all custom handlers loaded 2012-10-03 16:16:07,278 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000027D8sv00001043sd000082EAbc04sc03i00') 2012-10-03 16:16:07,568 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel'} 2012-10-03 16:16:07,699 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,699 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel'} 2012-10-03 16:16:07,699 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_hda_intel', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,699 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'input:b0000v0000p0000e0000-e0,5,kramlsfw6,') 2012-10-03 16:16:07,704 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'evbug'} 2012-10-03 16:16:07,704 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'evbug', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,704 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000027DAsv00001043sd00008179bc0Csc05i00') 2012-10-03 16:16:07,707 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'i2c_i801'} 2012-10-03 16:16:07,707 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'i2c_i801', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,707 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0C01:') 2012-10-03 16:16:07,707 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0B00:') 2012-10-03 16:16:07,707 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00001969d00001026sv00001043sd00008304bc02sc00i00') 2012-10-03 16:16:07,710 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'atl1e'} 2012-10-03 16:16:07,710 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'atl1e', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,710 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'input:b0003v04F2p0816e0111-e0,1,4,11,14,k71,72,73,74,75,77,79,7A,7B,7C,7D,7E,7F,80,81,82,83,84,85,86,87,88,89,8A,8C,8E,96,98,9E,9F,A1,A3,A4,A5,A6,AD,B0,B1,B2,B3,B4,B7,B8,B9,BA,BB,BC,BD,BE,BF,C0,C1,C2,F0,ram4,l0,1,2,sfw') 2012-10-03 16:16:07,711 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'evbug'} 2012-10-03 16:16:07,711 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'evbug', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,711 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid'} 2012-10-03 16:16:07,711 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,711 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'platform:pcspkr') 2012-10-03 16:16:07,711 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'pcspkr'} 2012-10-03 16:16:07,711 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'pcspkr', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,712 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_pcsp'} 2012-10-03 16:16:07,712 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_pcsp', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,712 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'usb:v1D6Bp0001d0302dc09dsc00dp00ic09isc00ip00') 2012-10-03 16:16:07,724 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'input:b0019v0000p0001e0000-e0,1,k74,ramlsfw') 2012-10-03 16:16:07,724 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'evbug'} 2012-10-03 16:16:07,724 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'evbug', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,724 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid'} 2012-10-03 16:16:07,724 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'mac_hid', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,724 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0C04:') 2012-10-03 16:16:07,724 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'platform:eisa') 2012-10-03 16:16:07,725 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000027CCsv00001043sd00008179bc0Csc03i20') 2012-10-03 16:16:07,728 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'platform:Fixed MDIO bus') 2012-10-03 16:16:07,728 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00008086d000029C0sv00001043sd000082B0bc06sc00i00') 2012-10-03 16:16:07,731 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'usb:v045Ep0766d0101dcEFdsc02dp01ic01isc01ip00') 2012-10-03 16:16:07,777 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'snd_usb_audio'} 2012-10-03 16:16:07,777 DEBUG: no corresponding handler available for {'driver_type': 'kernel_module', 'kernel_module': 'snd_usb_audio', 'jockey_handler': 'KernelModuleHandler'} 2012-10-03 16:16:07,777 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0F03:PNP0F13:') 2012-10-03 16:16:07,777 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'acpi:PNP0000:') 2012-10-03 16:16:07,777 DEBUG: querying driver db <jockey.detection.LocalKernelModulesDriverDB instance at 0xb7231a0c> about HardwareID('modalias', 'pci:v00001002d000095C5sv0000174Bsd0000E400bc03sc00i00') 2012-10-03 16:16:08,072 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'fglrx_updates', 'package': 'fglrx-updates'} 2012-10-03 16:16:08,133 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None 2012-10-03 16:16:08,134 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:16:08,072 DEBUG: found match in handler pool xorg:fglrx_updates([FglrxDriverUpdate, nonfree, disabled] ATI/AMD proprietary FGLRX graphics driver (post-release updates)) 2012-10-03 16:16:08,136 WARNING: modinfo for module fglrx_updates failed: ERROR: modinfo: could not find module fglrx_updates 2012-10-03 16:16:08,147 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:08,173 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None 2012-10-03 16:16:08,173 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:16:08,162 DEBUG: got handler xorg:fglrx_updates([FglrxDriverUpdate, nonfree, disabled] ATI/AMD proprietary FGLRX graphics driver (post-release updates)) 2012-10-03 16:16:08,173 DEBUG: searching handler for driver ID {'driver_type': 'kernel_module', 'kernel_module': 'fglrx', 'package': 'fglrx'} 2012-10-03 16:16:08,184 DEBUG: fglrx.enabled(fglrx): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None 2012-10-03 16:16:08,184 DEBUG: fglrx is not the alternative in use 2012-10-03 16:16:08,173 DEBUG: found match in handler pool xorg:fglrx([FglrxDriver, nonfree, disabled] ATI/AMD proprietary FGLRX graphics driver) 2012-10-03 16:16:08,187 WARNING: modinfo for module fglrx failed: ERROR: modinfo: could not find module fglrx 2012-10-03 16:16:08,190 DEBUG: fglrx.available: falling back to default 2012-10-03 16:16:08,216 DEBUG: fglrx.enabled(fglrx): target_alt None current_alt /usr/lib/i386-linux-gnu/mesa/ld.so.conf other target alt None other current alt None . . . 2012-10-03 16:18:10,552 DEBUG: install progress initramfs-tools 62.500000 2012-10-03 16:18:22,249 DEBUG: install progress libc-bin 62.500000 2012-10-03 16:18:23,251 DEBUG: Selecting previously unselected package dkms. (Reading database ... 142496 files and directories currently installed.) Unpacking dkms (from .../dkms_2.2.0.3-1ubuntu3_all.deb) ... Selecting previously unselected package fakeroot. Unpacking fakeroot (from .../fakeroot_1.18.2-1_i386.deb) ... Selecting previously unselected package fglrx-updates. Unpacking fglrx-updates (from .../fglrx-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Selecting previously unselected package fglrx-amdcccle-updates. Unpacking fglrx-amdcccle-updates (from .../fglrx-amdcccle-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Processing triggers for man-db ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot dpkg: error processing libxss1 (--configure): package libxss1 is already installed and configured dpkg: error processing chromium-codecs-ffmpeg (--configure): package chromium-codecs-ffmpeg is already installed and configured dpkg: error processing chromium-browser (--configure): package chromium-browser is already installed and configured dpkg: error processing chromium-browser-l10n (--configure): package chromium-browser-l10n is already installed and configured Setting up dkms (2.2.0.3-1ubuntu3) ... No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already Setting up fakeroot (1.18.2-1) ... update-alternatives: using /usr/bin/fakeroot-sysv to provide /usr/bin/fakeroot (fakeroot) in auto mode. Setting up fglrx-updates (2:8.960-0ubuntu1.1) ... update-alternatives: using /usr/lib/fglrx/ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode. update-alternatives: warning: skip creation of /etc/OpenCL/vendors/amdocl64.icd because associated file /usr/lib/fglrx/etc/OpenCL/vendors/amdocl64.icd (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalcl.so because associated file /usr/lib32/fglrx/libaticalcl.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalrt.so because associated file /usr/lib32/fglrx/libaticalrt.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: using /usr/lib/fglrx/alt_ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode. update-initramfs: deferring update (trigger activated) Loading new fglrx-updates-8.960 DKMS files... First Installation: checking all kernels... Building only for 3.2.0-29-generic-pae Building for architecture i686 Building initial module for 3.2.0-29-generic-pae Done. fglrx_updates: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/3.2.0-29-generic-pae/updates/dkms/ depmod...... DKMS: install completed. update-initramfs: deferring update (trigger activated) Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Setting up fglrx-amdcccle-updates (2:8.960-0ubuntu1.1) ... Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-3.2.0-29-generic-pae Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: libxss1 chromium-codecs-ffmpeg chromium-browser chromium-browser-l10n Error in function: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1) 2012-10-03 16:18:23,256 ERROR: Package failed to install: Selecting previously unselected package dkms. (Reading database ... 142496 files and directories currently installed.) Unpacking dkms (from .../dkms_2.2.0.3-1ubuntu3_all.deb) ... Selecting previously unselected package fakeroot. Unpacking fakeroot (from .../fakeroot_1.18.2-1_i386.deb) ... Selecting previously unselected package fglrx-updates. Unpacking fglrx-updates (from .../fglrx-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Selecting previously unselected package fglrx-amdcccle-updates. Unpacking fglrx-amdcccle-updates (from .../fglrx-amdcccle-updates_2%3a8.960-0ubuntu1.1_i386.deb) ... Processing triggers for man-db ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot dpkg: error processing libxss1 (--configure): package libxss1 is already installed and configured dpkg: error processing chromium-codecs-ffmpeg (--configure): package chromium-codecs-ffmpeg is already installed and configured dpkg: error processing chromium-browser (--configure): package chromium-browser is already installed and configured dpkg: error processing chromium-browser-l10n (--configure): package chromium-browser-l10n is already installed and configured Setting up dkms (2.2.0.3-1ubuntu3) ... No apport report written because MaxReports is reached already No apport report written because MaxReports is reached already Setting up fakeroot (1.18.2-1) ... update-alternatives: using /usr/bin/fakeroot-sysv to provide /usr/bin/fakeroot (fakeroot) in auto mode. Setting up fglrx-updates (2:8.960-0ubuntu1.1) ... update-alternatives: using /usr/lib/fglrx/ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode. update-alternatives: warning: skip creation of /etc/OpenCL/vendors/amdocl64.icd because associated file /usr/lib/fglrx/etc/OpenCL/vendors/amdocl64.icd (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalcl.so because associated file /usr/lib32/fglrx/libaticalcl.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: warning: skip creation of /usr/lib32/libaticalrt.so because associated file /usr/lib32/fglrx/libaticalrt.so (of link group i386-linux-gnu_gl_conf) doesn't exist. update-alternatives: using /usr/lib/fglrx/alt_ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode. update-initramfs: deferring update (trigger activated) Loading new fglrx-updates-8.960 DKMS files... First Installation: checking all kernels... Building only for 3.2.0-29-generic-pae Building for architecture i686 Building initial module for 3.2.0-29-generic-pae Done. fglrx_updates: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/3.2.0-29-generic-pae/updates/dkms/ depmod...... DKMS: install completed. update-initramfs: deferring update (trigger activated) Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Setting up fglrx-amdcccle-updates (2:8.960-0ubuntu1.1) ... Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-3.2.0-29-generic-pae Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: libxss1 chromium-codecs-ffmpeg chromium-browser chromium-browser-l10n Error in function: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1) 2012-10-03 16:18:23,590 WARNING: /sys/module/fglrx_updates/drivers does not exist, cannot rebind fglrx_updates driver 2012-10-03 16:18:43,601 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:43,601 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:43,617 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:43,617 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,143 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,144 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,154 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,154 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,182 DEBUG: fglrx.enabled(fglrx): target_alt /usr/lib/fglrx/ld.so.conf current_alt /usr/lib/fglrx/ld.so.conf other target alt /usr/lib/fglrx/alt_ld.so.conf other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,182 DEBUG: XorgDriverHandler(%s, %s).enabled(): No X.org driver set, not checking 2012-10-03 16:18:54,215 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,215 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,229 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,229 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,268 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,268 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,279 DEBUG: fglrx.enabled(fglrx_updates): target_alt None current_alt /usr/lib/fglrx/ld.so.conf other target alt None other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,279 DEBUG: fglrx_updates is not the alternative in use 2012-10-03 16:18:54,298 DEBUG: fglrx.enabled(fglrx): target_alt /usr/lib/fglrx/ld.so.conf current_alt /usr/lib/fglrx/ld.so.conf other target alt /usr/lib/fglrx/alt_ld.so.conf other current alt /usr/lib/fglrx/alt_ld.so.conf 2012-10-03 16:18:54,298 DEBUG: XorgDriverHandler(%s, %s).enabled(): No X.org driver set, not checking 2012-10-03 16:18:57,828 DEBUG: Shutting down I don't know how to troubleshoot from looking at the log file, could somebody assist me with this please? You can download the log file at: https://www.dropbox.com/s/a59d2hyabo02q5z/jockey.log

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• How can I login to lightdm with password for fingerprint-enabled user after 12.10 upgrade?

  - by jxn

  Sorry for the long question. I have a laptop with ubuntu quantal 12.10, a fingerprint scanner, and a few active user accounts. When the machine boots up to lightdm, I get a prompt toenter my password or scan my finger print. Every now and then, fingerprint scanning just doesn't seem to work. Before the 12.10 upgrade, I was always able to enter my password for this user when fingerprint failed. Now, no matter what, I have to scan my prints to login as this user. If I try to login as a different user (fingerprint is not enabled for any others), I can see the password is typed out -- asterisks show in the password input box as I type them -- and get in. Not so for the fingerprint user. Any clues on how to figure out what's gone wrong?

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• Why do [flush-8:16] and [jbd2/sdb2-8] occasionally use 99.99% disk IO?

  - by ændrük

  Approximately twice a week, the entire graphical interface will lock up for about 10-20 seconds without warning while I am doing simple tasks such as browsing the web or writing a paper. When this happens, GUI elements do not respond to mouse or keyboard input, and the System Monitor applet displays 100% IOWait processor usage. Today, I finally happened to have GNOME Terminal already open when the problem started. Despite other applications such as Google Chrome, Firefox, GNOME Do, and GNOME Panel being unresponsive, the terminal was usable. I ran iotop and observed that commands named [flush-8:16] and [jbd2/sdb2-8] were alternately using 99.99% IO. What are these, and how can I prevent them from causing GUI unresponsiveness? Here is dumpe2fs /dev/sdb2, if it's relevant.

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• SQL SERVER – Number-Crunching with SQL Server – Exceed the Functionality of Excel

  - by Pinal Dave

  Imagine this. Your users have developed an Excel spreadsheet that extracts data from your SQL Server database, manipulates that data through the use of Excel formulas and, possibly, some VBA code which is then used to calculate P&L, hedging requirements or even risk numbers. Management comes to you and tells you that they need to get rid of the spreadsheet and that the results of the spreadsheet calculations need to be persisted on the database. SQL Server has a very small set of functions for analyzing data. Excel has hundreds of functions for analyzing data, with many of them focused on specific financial and statistical calculations. Is it even remotely possible that you can use SQL Server to replace the complex calculations being done in a spreadsheet? Westclintech has developed a library of functions that match or exceed the functionality of Excel’s functions and contains many functions that are not available in EXCEL. Their XLeratorDB library of functions contains over 700 functions that can be incorporated into T-SQL statements. XLeratorDB takes advantage of the SQL CLR architecture introduced in SQL Server 2005. SQL CLR permits managed code to be compiled into the database and run alongside built-in SQL Server functions like COUNT or SUM. The Westclintech developers have taken advantage of this architecture to bring robust analytical functions to the database. In our hypothetical spreadsheet, let’s assume that our users are using the YIELD function and that the data are extracted from a table in our database called BONDS. Here’s what the spreadsheet might look like. We go to column G and see that it contains the following formula. Obviously, SQL Server does not offer a native YIELD function. However, with XLeratorDB we can replicate this calculation in SQL Server with the following statement: SELECT *, wct.YIELD(CAST(GETDATE() AS date),Maturity,Rate,Price,100,Frequency,Basis) AS YIELD FROM BONDS This produces the following result. This illustrates one of the best features about XLeratorDB; it is so easy to use. Since I knew that the spreadsheet was using the YIELD function I could use the same function with the same calling structure to do the calculation in SQL Server. I didn’t need to know anything at all about the mechanics of calculating the yield on a bond. It was pretty close to cut and paste. In fact, that’s one way to construct the SQL. Just copy the function call from the cell in the spreadsheet and paste it into SMS and change the cell references to column names. I built the SQL for this query by starting with this. SELECT * ,YIELD(TODAY(),B2,C2,D2,100,E2,F2) FROM BONDS I then changed the cell references to column names. SELECT * --,YIELD(TODAY(),B2,C2,D2,100,E2,F2) ,YIELD(TODAY(),Maturity,Rate,Price,100,Frequency,Basis) FROM BONDS Finally, I replicated the TODAY() function using GETDATE() and added the schema name to the function name. SELECT * --,YIELD(TODAY(),B2,C2,D2,100,E2,F2) --,YIELD(TODAY(),Maturity,Rate,Price,100,Frequency,Basis) ,wct.YIELD(GETDATE(),Maturity,Rate,Price,100,Frequency,Basis) FROM BONDS Then I am able to execute the statement returning the results seen above. The XLeratorDB libraries are heavy on financial, statistical, and mathematical functions. Where there is an analog to an Excel function, the XLeratorDB function uses the same naming conventions and calling structure as the Excel function, but there are also hundreds of additional functions for SQL Server that are not found in Excel. You can find the functions by opening Object Explorer in SQL Server Management Studio (SSMS) and expanding the Programmability folder under the database where the functions have been installed. The  Functions folder expands to show 3 sub-folders: Table-valued Functions; Scalar-valued functions, Aggregate Functions, and System Functions. You can expand any of the first three folders to see the XLeratorDB functions. Since the wct.YIELD function is a scalar function, we will open the Scalar-valued Functions folder, scroll down to the wct.YIELD function and and click the plus sign (+) to display the input parameters. The functions are also Intellisense-enabled, with the input parameters displayed directly in the query tab. The Westclintech website contains documentation for all the functions including examples that can be copied directly into a query window and executed. There are also more one hundred articles on the site which go into more detail about how some of the functions work and demonstrate some of the extensive business processes that can be done in SQL Server using XLeratorDB functions and some T-SQL. XLeratorDB is organized into libraries: finance, statistics; math; strings; engineering; and financial options. There is also a windowing library for SQL Server 2005, 2008, and 2012 which provides functions for calculating things like running and moving averages (which were introduced in SQL Server 2012), FIFO inventory calculations, financial ratios and more, without having to use triangular joins. To get started you can download the XLeratorDB 15-day free trial from the Westclintech web site. It is a fully-functioning, unrestricted version of the software. If you need more than 15 days to evaluate the software, you can simply download another 15-day free trial. XLeratorDB is an easy and cost-effective way to start adding sophisticated data analysis to your SQL Server database without having to know anything more than T-SQL. Get XLeratorDB Today and Now! Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: Excel

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• Using Stub Objects

  - by user9154181

  Having told the long and winding tale of where stub objects came from and how we use them to build Solaris, I'd like to focus now on the the nuts and bolts of building and using them. The following new features were added to the Solaris link-editor (ld) to support the production and use of stub objects: -z stub This new command line option informs ld that it is to build a stub object rather than a normal object. In this mode, it accepts the same command line arguments as usual, but will quietly ignore any objects and sharable object dependencies. STUB_OBJECT Mapfile Directive In order to build a stub version of an object, its mapfile must specify the STUB_OBJECT directive. When producing a non-stub object, the presence of STUB_OBJECT causes the link-editor to perform extra validation to ensure that the stub and non-stub objects will be compatible. ASSERT Mapfile Directive All data symbols exported from the object must have an ASSERT symbol directive in the mapfile that declares them as data and supplies the size, binding, bss attributes, and symbol aliasing details. When building the stub objects, the information in these ASSERT directives is used to create the data symbols. When building the real object, these ASSERT directives will ensure that the real object matches the linking interface presented by the stub. Although ASSERT was added to the link-editor in order to support stub objects, they are a general purpose feature that can be used independently of stub objects. For instance you might choose to use an ASSERT directive if you have a symbol that must have a specific address in order for the object to operate properly and you want to automatically ensure that this will always be the case. The material presented here is derived from a document I originally wrote during the development effort, which had the dual goals of providing supplemental materials for the stub object PSARC case, and as a set of edits that were eventually applied to the Oracle Solaris Linker and Libraries Manual (LLM). The Solaris 11 LLM contains this information in a more polished form. Stub Objects A stub object is a shared object, built entirely from mapfiles, that supplies the same linking interface as the real object, while containing no code or data. Stub objects cannot be used at runtime. However, an application can be built against a stub object, where the stub object provides the real object name to be used at runtime, and then use the real object at runtime. When building a stub object, the link-editor ignores any object or library files specified on the command line, and these files need not exist in order to build a stub. Since the compilation step can be omitted, and because the link-editor has relatively little work to do, stub objects can be built very quickly. Stub objects can be used to solve a variety of build problems: Speed Modern machines, using a version of make with the ability to parallelize operations, are capable of compiling and linking many objects simultaneously, and doing so offers significant speedups. However, it is typical that a given object will depend on other objects, and that there will be a core set of objects that nearly everything else depends on. It is necessary to impose an ordering that builds each object before any other object that requires it. This ordering creates bottlenecks that reduce the amount of parallelization that is possible and limits the overall speed at which the code can be built. Complexity/Correctness In a large body of code, there can be a large number of dependencies between the various objects. The makefiles or other build descriptions for these objects can become very complex and difficult to understand or maintain. The dependencies can change as the system evolves. This can cause a given set of makefiles to become slightly incorrect over time, leading to race conditions and mysterious rare build failures. Dependency Cycles It might be desirable to organize code as cooperating shared objects, each of which draw on the resources provided by the other. Such cycles cannot be supported in an environment where objects must be built before the objects that use them, even though the runtime linker is fully capable of loading and using such objects if they could be built. Stub shared objects offer an alternative method for building code that sidesteps the above issues. Stub objects can be quickly built for all the shared objects produced by the build. Then, all the real shared objects and executables can be built in parallel, in any order, using the stub objects to stand in for the real objects at link-time. Afterwards, the executables and real shared objects are kept, and the stub shared objects are discarded. Stub objects are built from a mapfile, which must satisfy the following requirements. The mapfile must specify the STUB_OBJECT directive. This directive informs the link-editor that the object can be built as a stub object, and as such causes the link-editor to perform validation and sanity checking intended to guarantee that an object and its stub will always provide identical linking interfaces. All function and data symbols that make up the external interface to the object must be explicitly listed in the mapfile. The mapfile must use symbol scope reduction ('*'), to remove any symbols not explicitly listed from the external interface. All global data exported from the object must have an ASSERT symbol attribute in the mapfile to specify the symbol type, size, and bss attributes. In the case where there are multiple symbols that reference the same data, the ASSERT for one of these symbols must specify the TYPE and SIZE attributes, while the others must use the ALIAS attribute to reference this primary symbol. Given such a mapfile, the stub and real versions of the shared object can be built using the same command line for each, adding the '-z stub' option to the link for the stub object, and omiting the option from the link for the real object. To demonstrate these ideas, the following code implements a shared object named idx5, which exports data from a 5 element array of integers, with each element initialized to contain its zero-based array index. This data is available as a global array, via an alternative alias data symbol with weak binding, and via a functional interface. % cat idx5.c int _idx5[5] = { 0, 1, 2, 3, 4 }; #pragma weak idx5 = _idx5 int idx5_func(int index) { if ((index 4)) return (-1); return (_idx5[index]); } A mapfile is required to describe the interface provided by this shared object. % cat mapfile $mapfile_version 2 STUB_OBJECT; SYMBOL_SCOPE { _idx5 { ASSERT { TYPE=data; SIZE=4[5] }; }; idx5 { ASSERT { BINDING=weak; ALIAS=_idx5 }; }; idx5_func; local: *; }; The following main program is used to print all the index values available from the idx5 shared object. % cat main.c #include <stdio.h> extern int _idx5[5], idx5[5], idx5_func(int); int main(int argc, char **argv) { int i; for (i = 0; i The following commands create a stub version of this shared object in a subdirectory named stublib. elfdump is used to verify that the resulting object is a stub. The command used to build the stub differs from that of the real object only in the addition of the -z stub option, and the use of a different output file name. This demonstrates the ease with which stub generation can be added to an existing makefile. % cc -Kpic -G -M mapfile -h libidx5.so.1 idx5.c -o stublib/libidx5.so.1 -zstub % ln -s libidx5.so.1 stublib/libidx5.so % elfdump -d stublib/libidx5.so | grep STUB [11] FLAGS_1 0x4000000 [ STUB ] The main program can now be built, using the stub object to stand in for the real shared object, and setting a runpath that will find the real object at runtime. However, as we have not yet built the real object, this program cannot yet be run. Attempts to cause the system to load the stub object are rejected, as the runtime linker knows that stub objects lack the actual code and data found in the real object, and cannot execute. % cc main.c -L stublib -R '$ORIGIN/lib' -lidx5 -lc % ./a.out ld.so.1: a.out: fatal: libidx5.so.1: open failed: No such file or directory Killed % LD_PRELOAD=stublib/libidx5.so.1 ./a.out ld.so.1: a.out: fatal: stublib/libidx5.so.1: stub shared object cannot be used at runtime Killed We build the real object using the same command as we used to build the stub, omitting the -z stub option, and writing the results to a different file. % cc -Kpic -G -M mapfile -h libidx5.so.1 idx5.c -o lib/libidx5.so.1 Once the real object has been built in the lib subdirectory, the program can be run. % ./a.out [0] 0 0 0 [1] 1 1 1 [2] 2 2 2 [3] 3 3 3 [4] 4 4 4 Mapfile Changes The version 2 mapfile syntax was extended in a number of places to accommodate stub objects. Conditional Input The version 2 mapfile syntax has the ability conditionalize mapfile input using the $if control directive. As you might imagine, these directives are used frequently with ASSERT directives for data, because a given data symbol will frequently have a different size in 32 or 64-bit code, or on differing hardware such as x86 versus sparc. The link-editor maintains an internal table of names that can be used in the logical expressions evaluated by $if and $elif. At startup, this table is initialized with items that describe the class of object (_ELF32 or _ELF64) and the type of the target machine (_sparc or _x86). We found that there were a small number of cases in the Solaris code base in which we needed to know what kind of object we were producing, so we added the following new predefined items in order to address that need: NameMeaning ...... _ET_DYNshared object _ET_EXECexecutable object _ET_RELrelocatable object ...... STUB_OBJECT Directive The new STUB_OBJECT directive informs the link-editor that the object described by the mapfile can be built as a stub object. STUB_OBJECT; A stub shared object is built entirely from the information in the mapfiles supplied on the command line. When the -z stub option is specified to build a stub object, the presence of the STUB_OBJECT directive in a mapfile is required, and the link-editor uses the information in symbol ASSERT attributes to create global symbols that match those of the real object. When the real object is built, the presence of STUB_OBJECT causes the link-editor to verify that the mapfiles accurately describe the real object interface, and that a stub object built from them will provide the same linking interface as the real object it represents. All function and data symbols that make up the external interface to the object must be explicitly listed in the mapfile. The mapfile must use symbol scope reduction ('*'), to remove any symbols not explicitly listed from the external interface. All global data in the object is required to have an ASSERT attribute that specifies the symbol type and size. If the ASSERT BIND attribute is not present, the link-editor provides a default assertion that the symbol must be GLOBAL. If the ASSERT SH_ATTR attribute is not present, or does not specify that the section is one of BITS or NOBITS, the link-editor provides a default assertion that the associated section is BITS. All data symbols that describe the same address and size are required to have ASSERT ALIAS attributes specified in the mapfile. If aliased symbols are discovered that do not have an ASSERT ALIAS specified, the link fails and no object is produced. These rules ensure that the mapfiles contain a description of the real shared object's linking interface that is sufficient to produce a stub object with a completely compatible linking interface. SYMBOL_SCOPE/SYMBOL_VERSION ASSERT Attribute The SYMBOL_SCOPE and SYMBOL_VERSION mapfile directives were extended with a symbol attribute named ASSERT. The syntax for the ASSERT attribute is as follows: ASSERT { ALIAS = symbol_name; BINDING = symbol_binding; TYPE = symbol_type; SH_ATTR = section_attributes; SIZE = size_value; SIZE = size_value[count]; }; The ASSERT attribute is used to specify the expected characteristics of the symbol. The link-editor compares the symbol characteristics that result from the link to those given by ASSERT attributes. If the real and asserted attributes do not agree, a fatal error is issued and the output object is not created. In normal use, the link editor evaluates the ASSERT attribute when present, but does not require them, or provide default values for them. The presence of the STUB_OBJECT directive in a mapfile alters the interpretation of ASSERT to require them under some circumstances, and to supply default assertions if explicit ones are not present. See the definition of the STUB_OBJECT Directive for the details. When the -z stub command line option is specified to build a stub object, the information provided by ASSERT attributes is used to define the attributes of the global symbols provided by the object. ASSERT accepts the following: ALIAS Name of a previously defined symbol that this symbol is an alias for. An alias symbol has the same type, value, and size as the main symbol. The ALIAS attribute is mutually exclusive to the TYPE, SIZE, and SH_ATTR attributes, and cannot be used with them. When ALIAS is specified, the type, size, and section attributes are obtained from the alias symbol. BIND Specifies an ELF symbol binding, which can be any of the STB_ constants defined in <sys/elf.h>, with the STB_ prefix removed (e.g. GLOBAL, WEAK). TYPE Specifies an ELF symbol type, which can be any of the STT_ constants defined in <sys/elf.h>, with the STT_ prefix removed (e.g. OBJECT, COMMON, FUNC). In addition, for compatibility with other mapfile usage, FUNCTION and DATA can be specified, for STT_FUNC and STT_OBJECT, respectively. TYPE is mutually exclusive to ALIAS, and cannot be used in conjunction with it. SH_ATTR Specifies attributes of the section associated with the symbol. The section_attributes that can be specified are given in the following table: Section AttributeMeaning BITSSection is not of type SHT_NOBITS NOBITSSection is of type SHT_NOBITS SH_ATTR is mutually exclusive to ALIAS, and cannot be used in conjunction with it. SIZE Specifies the expected symbol size. SIZE is mutually exclusive to ALIAS, and cannot be used in conjunction with it. The syntax for the size_value argument is as described in the discussion of the SIZE attribute below. SIZE The SIZE symbol attribute existed before support for stub objects was introduced. It is used to set the size attribute of a given symbol. This attribute results in the creation of a symbol definition. Prior to the introduction of the ASSERT SIZE attribute, the value of a SIZE attribute was always numeric. While attempting to apply ASSERT SIZE to the objects in the Solaris ON consolidation, I found that many data symbols have a size based on the natural machine wordsize for the class of object being produced. Variables declared as long, or as a pointer, will be 4 bytes in size in a 32-bit object, and 8 bytes in a 64-bit object. Initially, I employed the conditional $if directive to handle these cases as follows: $if _ELF32 foo { ASSERT { TYPE=data; SIZE=4 } }; bar { ASSERT { TYPE=data; SIZE=20 } }; $elif _ELF64 foo { ASSERT { TYPE=data; SIZE=8 } }; bar { ASSERT { TYPE=data; SIZE=40 } }; $else $error UNKNOWN ELFCLASS $endif I found that the situation occurs frequently enough that this is cumbersome. To simplify this case, I introduced the idea of the addrsize symbolic name, and of a repeat count, which together make it simple to specify machine word scalar or array symbols. Both the SIZE, and ASSERT SIZE attributes support this syntax: The size_value argument can be a numeric value, or it can be the symbolic name addrsize. addrsize represents the size of a machine word capable of holding a memory address. The link-editor substitutes the value 4 for addrsize when building 32-bit objects, and the value 8 when building 64-bit objects. addrsize is useful for representing the size of pointer variables and C variables of type long, as it automatically adjusts for 32 and 64-bit objects without requiring the use of conditional input. The size_value argument can be optionally suffixed with a count value, enclosed in square brackets. If count is present, size_value and count are multiplied together to obtain the final size value. Using this feature, the example above can be written more naturally as: foo { ASSERT { TYPE=data; SIZE=addrsize } }; bar { ASSERT { TYPE=data; SIZE=addrsize[5] } }; Exported Global Data Is Still A Bad Idea As you can see, the additional plumbing added to the Solaris link-editor to support stub objects is minimal. Furthermore, about 90% of that plumbing is dedicated to handling global data. We have long advised against global data exported from shared objects. There are many ways in which global data does not fit well with dynamic linking. Stub objects simply provide one more reason to avoid this practice. It is always better to export all data via a functional interface. You should always hide your data, and make it available to your users via a function that they can call to acquire the address of the data item. However, If you do have to support global data for a stub, perhaps because you are working with an already existing object, it is still easilily done, as shown above. Oracle does not like us to discuss hypothetical new features that don't exist in shipping product, so I'll end this section with a speculation. It might be possible to do more in this area to ease the difficulty of dealing with objects that have global data that the users of the library don't need. Perhaps someday... Conclusions It is easy to create stub objects for most objects. If your library only exports function symbols, all you have to do to build a faithful stub object is to add STUB_OBJECT; and then to use the same link command you're currently using, with the addition of the -z stub option. Happy Stubbing!

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• Advice on SCRUM for the solitary developer [closed]

  - by ProfK

  Possible Duplicate: Agile for the Solo Developer I am looking for advice on the SCRUM process for a solitary developer. Most SCRUM resources I see focus on its use in a team environment, hence my question here. I'd like some guidance on structuring and managing my projects for SCRUM, with me as a solitary developer and business owner, but still occasionally including my clients for input and feedback. Areas I'm not clear on include resolving my backlog into 'sprintable' project areas and stories, defining user stories properly with a view to being digested by developer level users, defining feasible sprints for a single developer etc. Essentially I'm looking for advice on moving from using scrum in a team/office environment, with colleagues and project manager, and using chaos/cowboy-coding on my own, to assuming the role of PM myself and adopting scrum for work on my own. Any advice is welcome.

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• CodePlex Daily Summary for Friday, March 02, 2012

  CodePlex Daily Summary for Friday, March 02, 2012Popular ReleasesMedia Companion: MC 3.433b Release: General More GUI tweaks (mostly imperceptible!) Updates for mc_com.exe TV The 'Watched' button has been re-instigated Added TV Menu sub-option to search ALL for new Episodes (includes locked shows) Movies Added 'Source' field (eg DVD, Bluray, HDTV), customisable in Advanced Preferences (try it out, let us know how it works!) Added HTML <<format>> tag with optional parameters for video container, source, and resolution (updated HTML tags to be added to Documentation shortly) Known Issu...Picturethrill: Version 2.3.2.0: Release includes Self-Update feature for Picturethrill. What that means for users is that they are always guaranteed to have a fresh copy of Picturethrill on their computers with all latest fixes. When Picturethrill adds a new website to get pictures from, you will get it too!THE NVL Maker: The NVL Maker Ver 3.11: SIM??????，TRA??????， ????????????????，??????~（??????????????????） ??： 115?? ???? http://115.com/file/bewo7t11#THENVLMakerver3.11sim.zip MediaFire ???? http://www.mediafire.com/?wj9dmk3eb70mdzt 3.11 ??? ???： ·????????????UNICODE????????????????????（??Data.xp3） ·?????.?（https://sites.google.com/site/hiyuadv/） ?????????krkrcht.exe ·?????????Editor.exe，????????krkrcht.exe?? ??： ·Wizard.exe??，BUG??，?????????????? ·????（Code）???，???????????????， ·??3.10?，???????????????，?????????????? ...Simple MVVM Toolkit for Silverlight, WPF and Windows Phone: Simple MVVM Toolkit v3.0.0.0: Added support for Silverlight 5.0 and Windows Phone 7.1. Upgraded project templates and samples. Upgraded installer. There are some new prerequisites required for this version, namely Silverlight 5 Tools, Expression Blend Preview for Silverlight 5 (until the SDK is released), Windows Phone 7.1 SDK. Because it is in the experimental band, I have also removed the dependency on the Silverlight Testing Framework. You can use it if you wish, but the Ria Services project template no longer uses ...CODE Framework: 4.0.20301: The latest version adds a number of new features to the WPF system (such as stylable and testable messagebox support) as well as various new features throughout the system (especially in the Utilities namespace).MyRouter (Virtual WiFi Router): MyRouter 1.0.1 (Beta): A friendlier User Interface. A logger file to catch exceptions so you may send it to use to improve and fix any bugs that may occur. A feedback form because we always love hearing what you guy's think of MyRouter. Check for update menu item for you to stay up to date will the latest changes. Facebook fan page so you may spread the word and share MyRouter with friends and family And Many other exciting features were sure your going to love!WPF Sound Visualization Library: WPF SVL 0.3 (Source, Binaries, Examples, Help): Version 0.3 of WPFSVL. This includes three new controls: an equalizer, a digital clock, and a time editor.Cocktail: Cocktail v0.4: PrerequisitesVisual Studio 2010 with SP1 (any edition but Express) SQL Server Express (included automatically with most Visual Studio installs) Optional: Silverlight 4 or 5 Note: Install Silverlight 4 Tools and then the Silverlight 4 Toolkit. Likewise for Silverlight 5 Tools and the Silverlight 5 Toolkit DevForce Universal Express 6.1.6 or greater Included in the Cocktail download, DevForce Universal Express requires registration) Important: Install DevForce after all other compo...ZXing.Net: ZXing.Net 0.4.0.0: sync with rev. 2196 of the java version important fix for RGBLuminanceSource generating barcode bitmaps Windows Phone demo client (only tested with emulator, because I don't have a Windows Phone) Barcode generation support for Windows Forms demo client Webcam support for Windows Forms demo clientOrchard Project: Orchard 1.4: Please read our release notes for Orchard 1.4: http://docs.orchardproject.net/Documentation/Orchard-1-4-Release-Notes.NET Assembly Information: Assembly Information 2.1.0.1: - Fixed the issue in which AnyCPU binaries were shown as 32bit - Added support to show the errors in-case if some dlls failed to load.FluentData -Micro ORM with a fluent API that makes it simple to query a database: FluentData version 1.2: New features: - QueryValues method - Added support for automapping to enumerations (both int and string are supported). Fixed 2 reported issues.NetSqlAzMan - .NET SQL Authorization Manager: 3.6.0.15: 3.6.0.15 28-Feb-2012 • Fix: The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state. Work Item 10435: http://netsqlazman.codeplex.com/workitem/10435 • Fix: Made StorageCache thread safe. Thanks to tangrl. • Fix: Members property of SqlAzManApplicationGroup is not functioning. Thanks to tangrl. Work Item 10267: http://netsqlazman.codeplex.com/workitem/10267 • Fix: Indexer are making database calls. Thanks to t...SCCM Client Actions Tool: Client Actions Tool v1.1: SCCM Client Actions Tool v1.1 is the latest version. It comes with following changes since last version: Added stop button to stop the ongoing process. Added action "Query update status". Added option "saveOnlineComputers" in config.ini to enable saving list of online computers from last session. Default value for "LatestClientVersion" set to SP2 R3 (4.00.6487.2157). Wuauserv service manual startup mode is considered healthy on Windows 7. Errors are now suppressed in checkReleases...Document.Editor: 2012.1: Whats new for Document.Editor 2012.1: Improved Recent Documents list Improved Insert Shape Improved Dialogs Minor Bug Fix's, improvements and speed upsSharpCompress - a fully native C# library for RAR, 7Zip, Zip, Tar, GZip, BZip2: SharpCompress 0.8: API Updates: SOLID Extract Method for Archives (7Zip and RAR). ExtractAllEntries method on Archive classes will extract archives as a streaming file. This can offer better 7Zip extraction performance if any of the entries are solid. The IsSolid method on 7Zip archives will return true if any are solid. Removed IExtractionListener was removed in favor of events. Unit tests show example. Bug fixes: PPMd passes tests plus other fixes (Thanks Pavel) Zip used to always write a Post Descri...Social Network Importer for NodeXL: SocialNetImporter(v.1.3): This new version includes: - Download new networks for Facebook fan pages. - New options for downloading more posts - Bug fixes To use the new graph data provider, do the following: Unzip the Zip file into the "PlugIns" folder that can be found in the NodeXL installation folder (i.e "C:\Program Files\Social Media Research Foundation\NodeXL Excel Template\PlugIns") Open NodeXL template and you can access the new importer from the "Import" menuContent Slider Module for DotNetNuke: 01.02.00: This release has the following updates and new features: Feature: One-Click Enabling of Pager Setting Feature: Cache Sliders for Performance Feature: Configurable Cache Setting Enhancement: Transitions can be Selected Bug: Secure Folder Images not Viewable Bug: Sliders Disappear on Postback Bug: Remote Images Cause Error Bug: Deleted Images Cause Error System Requirements DotNetNuke v06.00.00 or newer .Net Framework v3.5 SP1 or newer SQL Server 2005 or newerImage Resizer for Windows: Image Resizer 3 Preview 3: Here is yet another iteration toward what will eventually become Image Resizer 3. This release is stable. However, I'm calling it a preview since there are still many features I'd still like to add before calling it complete. Updated on February 28 to fix an issue with installing on multi-user machines. As usual, here is my progress report. Done Preview 3 Fix: 3206 3076 3077 5688 Fix: 7420 Fix: 7527 Fix: 7576 7612 Preview 2 6308 6309 Fix: 7339 Fix: 7357 Preview 1 UI...Finestra Virtual Desktops: 2.5.4500: This is a bug fix release for version 2.5. It fixes several things and adds a couple of minor features. See the 2.5 release notes for more information on the major new features in that version. Important - If Finestra crashes on startup for you, you must install the Visual C++ 2010 runtime from http://www.microsoft.com/download/en/details.aspx?id=5555. Fixes a bug with window animations not refreshing the screen on XP and with DWM off Fixes a bug with with crashing on XP due to a bug in t...New ProjectsaSMS.dll: aSMS.dll is an open source library to provide developer to convert a message (SMS) to PDU and convert PDU to message (SMS). aSMS.dll can be consumed by Windows Form Application, Windows Presentation Fundation, Console Application, ASP.NET Web Application, etc.Convert Number To Letter: you can convert number to persian Letter. ?????? ??? ?????? ???????? ??? ???? ??? ?? ?? ???? ????? ????? ????CRM 2011 Remove Children From Parent Entity Form: This CRM 2011 solution will allow to Remove Child entity records from Parent Entity Form.Cygnus: Cygnus v2GovDev for TFS: Microsoft Team Foundation Server (TFS) 2010 is the collaboration platform at the core of Microsoft’s application lifecycle management solution. In addition to core features like source control, build automation and work-item tracking, TFS enables teams to align projects with industry processes such as Agile, Scrum and CMMi via the use of customable XML Process Templates. Since 2005, TFS has been a welcomed addition to the Microsoft developer tool line-up by Government Agencies of all siz...Historia: Historia est un logiciel d'aide à la création de roman.Infiltrator - code profiler module for Orchard: Infiltrator is a simple profiler for Orchard, built as a module. Metro App: The Metro App for Windows 8Mouse Gesture Library: <Mouse Gesture Library> makes it easier for <.net Framework users> to build <WPF Applications>Netduino Multithreaded Webserver and DataLogger: Home logger is for logging sensor outputs and serving the collected data via webpages. It runs on the Netduino Plus. Using the .net micro framework 4.2 Written in C#. 1 x logging thread 1 x web dispatcher thread 4 x request handler threads (configurable) Also includes text file upload. Not much space left.Orchard DateTimeRange: DateTimeRange is a module for the Orchard CMS 1.4 (http://orchardproject.net/). It is a Module that adds an extra field that you can use in your content types. The field contains a configurable start - end date/time range or period. It is developed in C#, ASP.Net MVC and works with Orchard CMS 1.4 or higher.QLTB: Qu?n Lý Thi?t B? 2012QuickSpecsFinder: Una piccola utilità, abbozzata, per il recupero delle info di base di un personal computer (Memoria, Disco, Processore...)Simple Interpreted Assembler: Simple Interpreted Assembler is an IDE + Interpreter for a simplistic Assembly looking language I created. It is stack based ala' the CIL found in .NET.SkyWay: Sandbox mmo gametesttom03012012hg01: testtom03012012hg01testtom03012012hg04: testtom03012012hg04testtom03012012tfs02: testtom03012012tfs02Tiny Forum: The forum application built upon apworks framework.UPS Address Validation: Library uses UPS Address Validation API to validate address with possible parameters such as city, State, postal code, and etc. Additional information can be found at [url:https://www.ups.com/upsdeveloperkit/downloadresource?loc=en_US]. A sample test program validates all postal codes.Visual Studio LightSwitch application DB script generator: Introduction: ExportDatabaseScript tool is used to generate Sql server DB script from the LightSwitch internal database. Take a situation, We are developing the LightSwitch business application and we are using the internal database [ApplicationData] for storing Data. As our apW8Hackathon2012: W8Hackathon2012Windows Phone Commands for VS2010: The Windows Phone Commands is an open-source project built on top of. Microsoft Net 4.0, framework. This effort provides a powerful tool to assist the development phone for windows 7.1 as Isolate Storage Explorer (with copies of folders and files), Deployer, Build integrated, etc.Zdravlje na kvadrat: Program za vodenje fitness centra.ZobiesOnYourLawn-express: java learn

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• Before and After the Programmer Life [closed]

  - by Gio Borje

  How were people before and after becoming programmers through a black box? In a black box, the implementation is irrelevant; therefore, we focus on the input and output: High School Nerd -> becomeProgrammer() -> Manager (Person Before) -> (Person as Programmer) -> (New Person) (Person Before) -> (Person as Programmer) How are the typical lives of people before they became programmers? Why do people pursue life as a programmer? (Person as Programmer) -> (New Person) How has becoming a programmer changed people afterwards? Why quit being a programmer? Anecdotes would be nice. If many programmers have similar backgrounds and fates, do you think that there is some sort of stereotypical person that are destined to become programmers?

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• How can I prevent [flush-8:16] and [jbd2/sdb2-8] from causing GUI unresponsiveness?

  - by ændrük

  Approximately twice a week, the entire graphical interface will lock up for about 10-20 seconds without warning while I am doing simple tasks such as browsing the web or writing a paper. When this happens, GUI elements do not respond to mouse or keyboard input, and the System Monitor applet displays 100% IOWait processor usage. Today, I finally happened to have GNOME Terminal already open when the problem started. Despite other applications such as Google Chrome, Firefox, GNOME Do, and GNOME Panel being unresponsive, the terminal was usable. I ran iotop and observed that commands named [flush-8:16] and [jbd2/sdb2-8] were alternately using 99.99% IO. What are these, and how can I prevent them from causing GUI unresponsiveness? Details $ mount | grep ^/dev /dev/sda1 on / type ext4 (rw,noatime,discard,errors=remount-ro,commit=0) /dev/sdb2 on /home type ext4 (rw,commit=0) /dev/sda is an OCZ-VERTEX2 and /dev/sdb is a WD10EARS. Here is dumpe2fs /dev/sdb2, if it's relevant.

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• Apple Aluminum Keyboard Via Bluetooth - Fn Key Problem

  - by Richard

  I'm connecting an Apple Bluetooth Aluminum keyboard (this one) to my Lubuntu setup using the blueman applet. The keyboard types fine, but I would like to use its fn key to change screen brightness changing, page-up (fn+ctrl+down), page-down (fn+ctrl+up), et cetera. Right now the fn key doesn't seem to work. When I use xev, I don't see anything happen when I press fn. Does the keyboard not send this to the computer at all? Do I need to configure blueman's "Input Service" setting to make this an Apple (rather than a generic) keyboard? (It's not obvious how to do this.) Is xev just not showing the fn key? Where in this stack of software do I need to make a change to achieve the desired behaviour? Thanks!

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• Is there an alternative to the default lock-screen?

  - by cheshirekow

  I have a tablet PC that I'm running oneric on. One thing I don't like is that the default lock screen requires you to enter a password. Since this is a tablet, this means that it either needs to be connected to a keyboard, or I have to figure out how to get onboard to show up for the lock screen (caribou wont even start, and gok is messed up too). Even if I could do that, anyway, it's not what I want, since locking the screen is mostly to prevent erroneous input when I'm carrying it around (not for security). Are there any alternative applications for the lock screen? Anything like the plethora of android lock screens that allow you to solve puzzles or push a particular widget in a particular way to unlock the screen?

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• C#/.NET Little Wonders: The Useful But Overlooked Sets

  - by James Michael Hare

  Once again we consider some of the lesser known classes and keywords of C#.  Today we will be looking at two set implementations in the System.Collections.Generic namespace: HashSet<T> and SortedSet<T>.  Even though most people think of sets as mathematical constructs, they are actually very useful classes that can be used to help make your application more performant if used appropriately. A Background From Math In mathematical terms, a set is an unordered collection of unique items.  In other words, the set {2,3,5} is identical to the set {3,5,2}.  In addition, the set {2, 2, 4, 1} would be invalid because it would have a duplicate item (2).  In addition, you can perform set arithmetic on sets such as: Intersections: The intersection of two sets is the collection of elements common to both.  Example: The intersection of {1,2,5} and {2,4,9} is the set {2}. Unions: The union of two sets is the collection of unique items present in either or both set.  Example: The union of {1,2,5} and {2,4,9} is {1,2,4,5,9}. Differences: The difference of two sets is the removal of all items from the first set that are common between the sets.  Example: The difference of {1,2,5} and {2,4,9} is {1,5}. Supersets: One set is a superset of a second set if it contains all elements that are in the second set. Example: The set {1,2,5} is a superset of {1,5}. Subsets: One set is a subset of a second set if all the elements of that set are contained in the first set. Example: The set {1,5} is a subset of {1,2,5}. If We’re Not Doing Math, Why Do We Care? Now, you may be thinking: why bother with the set classes in C# if you have no need for mathematical set manipulation?  The answer is simple: they are extremely efficient ways to determine ownership in a collection. For example, let’s say you are designing an order system that tracks the price of a particular equity, and once it reaches a certain point will trigger an order.  Now, since there’s tens of thousands of equities on the markets, you don’t want to track market data for every ticker as that would be a waste of time and processing power for symbols you don’t have orders for.  Thus, we just want to subscribe to the stock symbol for an equity order only if it is a symbol we are not already subscribed to. Every time a new order comes in, we will check the list of subscriptions to see if the new order’s stock symbol is in that list.  If it is, great, we already have that market data feed!  If not, then and only then should we subscribe to the feed for that symbol. So far so good, we have a collection of symbols and we want to see if a symbol is present in that collection and if not, add it.  This really is the essence of set processing, but for the sake of comparison, let’s say you do a list instead: 1: // class that handles are order processing service 2: public sealed class OrderProcessor 3: { 4: // contains list of all symbols we are currently subscribed to 5: private readonly List<string> _subscriptions = new List<string>(); 6:  7: ... 8: } Now whenever you are adding a new order, it would look something like: 1: public PlaceOrderResponse PlaceOrder(Order newOrder) 2: { 3: // do some validation, of course... 4:  5: // check to see if already subscribed, if not add a subscription 6: if (!_subscriptions.Contains(newOrder.Symbol)) 7: { 8: // add the symbol to the list 9: _subscriptions.Add(newOrder.Symbol); 10: 11: // do whatever magic is needed to start a subscription for the symbol 12: } 13:  14: // place the order logic! 15: } What’s wrong with this?  In short: performance!  Finding an item inside a List<T> is a linear - O(n) – operation, which is not a very performant way to find if an item exists in a collection. (I used to teach algorithms and data structures in my spare time at a local university, and when you began talking about big-O notation you could immediately begin to see eyes glossing over as if it was pure, useless theory that would not apply in the real world, but I did and still do believe it is something worth understanding well to make the best choices in computer science). Let’s think about this: a linear operation means that as the number of items increases, the time that it takes to perform the operation tends to increase in a linear fashion.  Put crudely, this means if you double the collection size, you might expect the operation to take something like the order of twice as long.  Linear operations tend to be bad for performance because they mean that to perform some operation on a collection, you must potentially “visit” every item in the collection.  Consider finding an item in a List<T>: if you want to see if the list has an item, you must potentially check every item in the list before you find it or determine it’s not found. Now, we could of course sort our list and then perform a binary search on it, but sorting is typically a linear-logarithmic complexity – O(n * log n) - and could involve temporary storage.  So performing a sort after each add would probably add more time.  As an alternative, we could use a SortedList<TKey, TValue> which sorts the list on every Add(), but this has a similar level of complexity to move the items and also requires a key and value, and in our case the key is the value. This is why sets tend to be the best choice for this type of processing: they don’t rely on separate keys and values for ordering – so they save space – and they typically don’t care about ordering – so they tend to be extremely performant.  The .NET BCL (Base Class Library) has had the HashSet<T> since .NET 3.5, but at that time it did not implement the ISet<T> interface.  As of .NET 4.0, HashSet<T> implements ISet<T> and a new set, the SortedSet<T> was added that gives you a set with ordering. HashSet<T> – For Unordered Storage of Sets When used right, HashSet<T> is a beautiful collection, you can think of it as a simplified Dictionary<T,T>.  That is, a Dictionary where the TKey and TValue refer to the same object.  This is really an oversimplification, but logically it makes sense.  I’ve actually seen people code a Dictionary<T,T> where they store the same thing in the key and the value, and that’s just inefficient because of the extra storage to hold both the key and the value. As it’s name implies, the HashSet<T> uses a hashing algorithm to find the items in the set, which means it does take up some additional space, but it has lightning fast lookups!  Compare the times below between HashSet<T> and List<T>: Operation HashSet<T> List<T> Add() O(1) O(1) at end O(n) in middle Remove() O(1) O(n) Contains() O(1) O(n)   Now, these times are amortized and represent the typical case.  In the very worst case, the operations could be linear if they involve a resizing of the collection – but this is true for both the List and HashSet so that’s a less of an issue when comparing the two. The key thing to note is that in the general case, HashSet is constant time for adds, removes, and contains!  This means that no matter how large the collection is, it takes roughly the exact same amount of time to find an item or determine if it’s not in the collection.  Compare this to the List where almost any add or remove must rearrange potentially all the elements!  And to find an item in the list (if unsorted) you must search every item in the List. So as you can see, if you want to create an unordered collection and have very fast lookup and manipulation, the HashSet is a great collection. And since HashSet<T> implements ICollection<T> and IEnumerable<T>, it supports nearly all the same basic operations as the List<T> and can use the System.Linq extension methods as well. All we have to do to switch from a List<T> to a HashSet<T>  is change our declaration.  Since List and HashSet support many of the same members, chances are we won’t need to change much else. 1: public sealed class OrderProcessor 2: { 3: private readonly HashSet<string> _subscriptions = new HashSet<string>(); 4:  5: // ... 6:  7: public PlaceOrderResponse PlaceOrder(Order newOrder) 8: { 9: // do some validation, of course... 10: 11: // check to see if already subscribed, if not add a subscription 12: if (!_subscriptions.Contains(newOrder.Symbol)) 13: { 14: // add the symbol to the list 15: _subscriptions.Add(newOrder.Symbol); 16: 17: // do whatever magic is needed to start a subscription for the symbol 18: } 19: 20: // place the order logic! 21: } 22:  23: // ... 24: } 25: Notice, we didn’t change any code other than the declaration for _subscriptions to be a HashSet<T>.  Thus, we can pick up the performance improvements in this case with minimal code changes. SortedSet<T> – Ordered Storage of Sets Just like HashSet<T> is logically similar to Dictionary<T,T>, the SortedSet<T> is logically similar to the SortedDictionary<T,T>. The SortedSet can be used when you want to do set operations on a collection, but you want to maintain that collection in sorted order.  Now, this is not necessarily mathematically relevant, but if your collection needs do include order, this is the set to use. So the SortedSet seems to be implemented as a binary tree (possibly a red-black tree) internally.  Since binary trees are dynamic structures and non-contiguous (unlike List and SortedList) this means that inserts and deletes do not involve rearranging elements, or changing the linking of the nodes.  There is some overhead in keeping the nodes in order, but it is much smaller than a contiguous storage collection like a List<T>.  Let’s compare the three: Operation HashSet<T> SortedSet<T> List<T> Add() O(1) O(log n) O(1) at end O(n) in middle Remove() O(1) O(log n) O(n) Contains() O(1) O(log n) O(n)   The MSDN documentation seems to indicate that operations on SortedSet are O(1), but this seems to be inconsistent with its implementation and seems to be a documentation error.  There’s actually a separate MSDN document (here) on SortedSet that indicates that it is, in fact, logarithmic in complexity.  Let’s put it in layman’s terms: logarithmic means you can double the collection size and typically you only add a single extra “visit” to an item in the collection.  Take that in contrast to List<T>’s linear operation where if you double the size of the collection you double the “visits” to items in the collection.  This is very good performance!  It’s still not as performant as HashSet<T> where it always just visits one item (amortized), but for the addition of sorting this is a good thing. Consider the following table, now this is just illustrative data of the relative complexities, but it’s enough to get the point: Collection Size O(1) Visits O(log n) Visits O(n) Visits 1 1 1 1 10 1 4 10 100 1 7 100 1000 1 10 1000   Notice that the logarithmic – O(log n) – visit count goes up very slowly compare to the linear – O(n) – visit count.  This is because since the list is sorted, it can do one check in the middle of the list, determine which half of the collection the data is in, and discard the other half (binary search).  So, if you need your set to be sorted, you can use the SortedSet<T> just like the HashSet<T> and gain sorting for a small performance hit, but it’s still faster than a List<T>. Unique Set Operations Now, if you do want to perform more set-like operations, both implementations of ISet<T> support the following, which play back towards the mathematical set operations described before: IntersectWith() – Performs the set intersection of two sets.  Modifies the current set so that it only contains elements also in the second set. UnionWith() – Performs a set union of two sets.  Modifies the current set so it contains all elements present both in the current set and the second set. ExceptWith() – Performs a set difference of two sets.  Modifies the current set so that it removes all elements present in the second set. IsSupersetOf() – Checks if the current set is a superset of the second set. IsSubsetOf() – Checks if the current set is a subset of the second set. For more information on the set operations themselves, see the MSDN description of ISet<T> (here). What Sets Don’t Do Don’t get me wrong, sets are not silver bullets.  You don’t really want to use a set when you want separate key to value lookups, that’s what the IDictionary implementations are best for. Also sets don’t store temporal add-order.  That is, if you are adding items to the end of a list all the time, your list is ordered in terms of when items were added to it.  This is something the sets don’t do naturally (though you could use a SortedSet with an IComparer with a DateTime but that’s overkill) but List<T> can. Also, List<T> allows indexing which is a blazingly fast way to iterate through items in the collection.  Iterating over all the items in a List<T> is generally much, much faster than iterating over a set. Summary Sets are an excellent tool for maintaining a lookup table where the item is both the key and the value.  In addition, if you have need for the mathematical set operations, the C# sets support those as well.  The HashSet<T> is the set of choice if you want the fastest possible lookups but don’t care about order.  In contrast the SortedSet<T> will give you a sorted collection at a slight reduction in performance.   Technorati Tags: C#,.Net,Little Wonders,BlackRabbitCoder,ISet,HashSet,SortedSet

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• Dangerous programming

  - by benhowdle89

  Ok, i'm talking pure software/web, i'm not on about code to power Life Support machines or NASA rockets. In terms of software/web development what is the most dangerous single piece of code someone could put into a program (say if they had a grudge against a client/employee) In PHP, the first thing that comes to mind is some sort of file deletion: function EmptyDir($dir) { $handle=opendir($dir); while (($file = readdir($handle))!==false) { echo "$file <br>"; @unlink($dir.'/'.$file); } closedir($handle); } EmptyDir('images'); Or a PHP script that takes a user's sensitive input and posts it to Google sitemap or something? I hope this doesnt get closed off as subjective as there surely must be a ranking order of dangerous code. So i'm asking for the No.1 spot :) DISCLAIMER: I have no grudges against anyone, just curious for the answer!

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• Turn-based Strategy Loop

  - by Djentleman

  I'm working on a strategy game. It's turn-based and card-based (think Dominion-style), done in a client, with eventual AI in the works. I've already implemented almost all of the game logic (methods for calculations and suchlike) and I'm starting to work on the actual game loop. What is the "best" way to implement a game loop in such a game? Should I use a simple "while gameActive" loop that keeps running until gameActive is False, with sections that wait for player input? Or should it be managed through the UI with player actions determining what happens and when? Any help is appreciated. I'm doing it in Python (for now at least) to get my Python skills up a bit, although the language shouldn't matter for this question.

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• Will I have an easier time learning OpenGL in Pygame or Pyglet? (NeHe tutorials downloaded)

  - by shadowprotocol

  I'm looking between PyGame and Pyglet, Pyglet seems to be somewhat newer and more Pythony, but it's last release according to Wikipedia is January '10. PyGame seems to have more documentation, more recent updates, and more published books/tutorials on the web for learning. I downloaded both the Pyglet and PyGame versions of the NeHe OpenGL tutorials (Lessons 1-10) which cover this material: lesson01 - Setting up the window lesson02 - Polygons lesson03 - Adding color lesson04 - Rotation lesson05 - 3D lesson06 - Textures lesson07 - Filters, Lighting, input lesson08 - Blending (transparency) lesson09 - 2D Sprites in 3D lesson10 - Moving in a 3D world What do you guys think? Is my hunch that I'll be better off working with PyGame somewhat warranted?

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• OpenJDK DIO Project Now Live! Java SE Embedded API Accessing Peripherals

  - by hinkmond

  The DIO project on OpenJDK is now live! For those who grew up in the 1970's and 1980's, you might remember Ronnie James Dio, lead singer of Black Sabbath after Ozzy was fired, and lead singer of his own band, Dio. Well, this DIO is not that Dio. This DIO is the OpenJDK Device I/O project which provides a Java-level API for accessing generic device peripherals on embedded devices, like your Raspberry Pi running Java SE Embedded software. See: OpenJDK DIO Project Here's a quote: + General Purpose Input/Output (GPIO) + Inter-Integrated Circuit Bus (I2C) + Universal Asynchronous Receiver/Transmitter (UART) + Serial Peripheral Interface If you're familiar with Pi4J, then you're going to like DIO. And, if you liked Ozzy, you probably liked Ronnie James Dio. This will probably make Robert Savage happy too. The part about DIO being live now, not the part about Dio replacing Ozzy, because everyone likes Ozzy. Hinkmond

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• "Optimal" game loop for 2D side-scroller

  - by MrDatabase

  Is it possible to describe an "optimal" (in terms of performance) layout for a 2D side-scroller's game loop? In this context the "game loop" takes user input, updates the states of game objects and draws the game objects. For example having a GameObject base class with a deep inheritance hierarchy could be good for maintenance... you can do something like the following: foreach(GameObject g in gameObjects) g.update(); However I think this approach can create performance issues. On the other hand all game objects' data and functions could be global. Which would be a maintenance headache but might be closer to an optimally performing game loop. Any thoughts? I'm interested in practical applications of near optimal game loop structure... even if I get a maintenance headache in exchange for great performance.

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• Webcast - Social BPM: Integrating Enterprise 2.0 with Business Applications

  - by peggy.chen

  In today's fast-paced marketplace, successful companies rely on agile business processes and collaborative work environments to stay ahead of the competition. By making your application-based business processes visible, shareable, and flexible through dynamic, process-aware user interfaces, you can ensure that your team's best ideas are heard-and implemented quickly. Join us for this complimentary live Webcast and learn how Oracle's business process management (BPM) solution with integrated Enterprise 2.0 capabilities will enable your team to: Embed ad hoc collaboration into your structured processes and gain a unified view of enterprise information-across business functions-for effective and efficient decision-making Reach out to an expanded network for expert input in resolving exceptions in business workflows Add social feedback loops to your enterprise applications and continuously improve business processes Join us for this LIVE Webcast tomorrow as we discuss how business process management with integrated Enterprise 2.0 collaboration improves business responsiveness and enhances overall enterprise productivity. Take your business to the next level with a unified solution that fosters process-based collaboration between employees, partners, and customers. Register for the webcast now!

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• Skype, green screen, no microphone

  - by EddyThe B

  I have issues with skype using my brand new System 76 Galago Ultrapro, running Ubuntu 13.04. I installed Skype through ubuntu software centre (after allowing Canonical partner stuff), but it won't work, the video is a green screen, and it won't connect to the microphone. The webcam works when using Cheese, and the microphone appears to work in general (it shows sound levels when I go to the Input tab under the Sound settings). I tried to fix the green screen issue using this command: $ echo -e '#!bin/bash n LD_PRELOAD=/usr/lib/i386-linux-gnu/libv4l/v4l1compat.so /usr/bin/skype' | sudo tee /usr/local/bin/skype sudo chmod a+x /usr/local/bin/skype as suggested here: http://debianhelp.wordpress.com/2012/09/28/to-do-list-after-installing-ubuntu-13-04-aka-raring-ringtail-operating-system/ but no luck. Any ideas? I have also asked this question to the System 76 tech support folk.

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• Collision Detection Game Design and Architecture

  - by Chompas

  I've reading some articles about collision detection. My question here is about ideas on the design for it. Baically I have a C++ game that has a main loop with entities with an update method. Based on keyboard input, these characters updates their positions. My question is not about how to detect collisions, it's about getting ideas in which is the best way to implement this. The game has a main character but also enemies that have to collide between them, so I'm not sure where to make all the iterations for checking collisions and if the right way is to check everything against everything. Thanks in advance.

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