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Local Inter-Process Communication
The Local Inter-Process Communication (LPC, often also referred to as Local Procedure Call or Lightweight Procedure Call) is an internal, undocumented inter-process communication facility provided by the Microsoft Windows NT Kernel (operating system), kernel for lightweight inter-process communication, IPC between process (computing), processes on the same computer. As of Windows Vista, LPC has been rewritten as Asynchronous Local Inter-Process Communication (ALPC, often also Advanced Local Procedure Call) in order to provide a high-speed scalable communication mechanism required to efficiently implement User-Mode Driver Framework (UMDF), whose user-mode parts require an efficient communication channel with UMDF's components in the Architecture_of_Windows_NT#Executive, executive. The (A)LPC interface is part of Windows NT's undocumented Windows Native API, Native API, and as such is not available to applications for direct use. However, it can be used indirectly in the following inst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsoft Docs
Microsoft Docs was a library of technical documentation for end users, developers, and IT professionals who work with Microsoft products. The Microsoft Docs website provided technical specifications, conceptual articles, tutorials, guides, API references, code samples and other information related to Microsoft software and web services. Microsoft Docs was introduced in June 2016 as a replacement for the MSDN and Microsoft TechNet, TechNet libraries which previously hosted some of these materials. Microsoft Docs initially contained only .NET documentation. The process of migrating the bulk of the Microsoft Developer Network, MSDN and Microsoft TechNet, TechNet libraries' content took approximately two years. In 2022, Microsoft Docs was made part of the Microsoft Learn site. Structure and features The content on Microsoft Docs was organised into groups based on product or technology and steps of working with it: evaluating, getting started, planning, deploying, managing, and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Client/Server Runtime Subsystem
The Client/Server Runtime Subsystem, or csrss.exe, is a component of the Windows NT family of operating systems that provides the user mode side of the Win32 subsystem. In modern versions of Windows, it is primarily involved with process and thread management, console window handling, side-by-side assembly loading and the shutdown process. Historically, it had also been responsible for window management and graphics rendering, however, these operations have been moved to kernel mode starting with Windows NT 4.0 to improve performance. CSRSS instances are marked as critical processes, meaning that terminating one will crash the system. Built-in process management tools in most Windows versions will also refuse to kill instances of CSRSS. Under normal operation, there is a CSRSS instance for each session (two in Windows Vista and newer, one in earlier versions, both assuming there are no active RDP connections which spawn extra sessions). Technical details CSRSS runs as a user- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsoft Press
Microsoft Press is the publishing arm of Microsoft, usually releasing books dealing with various current Microsoft technologies. Microsoft Press' introduced books were ''The Apple Macintosh Book'' by Cary Lu and ''Exploring the IBM PCjr Home Computer'' by Peter Norton in 1984 at the West Coast Computer Faire. The publisher has gone on to release books by other recognizable authors such as Charles Petzold, Steve McConnell, Mark Russinovich and Jeffrey Richter. Following a deal signed in 2009, O'Reilly Media became the official distributor of Microsoft Press books. In 2014, the distributor was changed to Pearson PLC, Pearson. In July 2016, Microsoft Press editorial staff was laid off. References External links * Microsoft divisions Computer book publishing companies Publishing companies established in 1984 {{microsoft-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hungry Minds
International Data Group (IDG, Inc.) is an American market intelligence and demand generation company focused on the technology industry. IDG, Inc.'s mission is centered around supporting the technology industry through research, data, marketing technology, and insights that help create and sustain relationships between businesses. IDG, Inc. is wholly owned by Blackstone and is led by Genevieve Juillard, who was appointed CEO of the company in 2023. Juillard serves on IDG, Inc.'s leadership team along with IDC President Crawford Del Prete and IDG, Inc.'s Chief Financial Officer Tiziana Figliolia. IDG, Inc. is headquartered in Needham, Massachusetts and is the parent company of both International Data Corporation (IDC) and Foundry (formerly IDG Communications). History International Data Group was initially founded as International Data Corporation (IDC) in 1964 by Patrick Joseph McGovern, shortly after he had graduated from the Massachusetts Institute of Technology (MIT). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Remote Procedure Call
In distributed computing, a remote procedure call (RPC) is when a computer program causes a procedure (subroutine) to execute in a different address space (commonly on another computer on a shared computer network), which is written as if it were a normal (local) procedure call, without the programmer explicitly writing the details for the remote interaction. That is, the programmer writes essentially the same code whether the subroutine is local to the executing program, or remote. This is a form of server interaction (caller is client, executor is server), typically implemented via a request–response message passing system. In the object-oriented programming paradigm, RPCs are represented by remote method invocation (RMI). The RPC model implies a level of location transparency, namely that calling procedures are largely the same whether they are local or remote, but usually, they are not identical, so local calls can be distinguished from remote calls. Remote calls are usually o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doors (computing)
Doors is an inter-process communication facility for Unix computer systems. They provide a form of procedure call. History Doors were developed by Sun Microsystems as a core part of the Spring operating system, then added to Solaris in version 2.5 as an undocumented internal interface. They became a documented feature in Solaris 2.6. Recent versions of Solaris use Doors in many places, including nscd (the name service cache daemon) and syslog. A Linux port of Doors was released in 2003, but is only available for version 2.4.18. Overview The Doors subsystem is implemented as a user-space library with some kernel support, and relies heavily on threads. It is designed for low overhead, and the Solaris implementation uses some assembly code for maximum efficiency. Doors are created by server processes (which must use threads) and called by client processes. It is possible for one process to both create and call a door. When creating a door, the server must specify a se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distributed Component Object Model
Distributed Component Object Model (DCOM) is a proprietary Microsoft technology for communication between software components on networked computers. DCOM, which originally was called "Network OLE", extends Microsoft's COM, and provides the communication substrate under Microsoft's COM+ application server infrastructure. The extension COM into Distributed COM was due to extensive use of DCE/RPC (Distributed Computing Environment/Remote Procedure Calls) – more specifically Microsoft's enhanced version, known as MSRPC. In terms of the extensions it added to COM, DCOM had to solve the problems of: * Marshalling – serializing and deserializing the arguments and return values of method calls "over the wire". *Distributed garbage collection – ensuring that references held by clients of interfaces are released when, for example, the client process crashed, or the network connection was lost. *Combining significant numbers of objects in the client's browser into a single tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Object Linking And Embedding
Object Linking and Embedding (OLE) is a proprietary technology developed by Microsoft that allows embedding and linking to documents and other objects. For developers, it brought OLE Control Extension (OCX), a way to develop and use custom user interface elements. On a technical level, an OLE object is any object that implements the IOleObject interface, possibly along with a wide range of other interfaces, depending on the object's needs. Overview OLE allows an editing application to export part of a document to another editing application and then import it with additional content. For example, a desktop publishing system might send some text to a word processor or a picture to a bitmap editor using OLE. The main benefit of OLE is to add different kinds of data to a document from different applications, like a text editor and an image editor. This creates a Compound File Binary Format document and a master file to which the document makes reference. Changes to data in the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reference Monitor
In operating systems architecture a reference monitor concept defines a set of design requirements on a reference validation mechanism, which enforces an access control policy over subjects' (e.g., processes and users) ability to perform operations (e.g., read and write) on objects (e.g., files and sockets) on a system. The properties of a reference monitor are captured by the acronym NEAT, which means: * The reference validation mechanism must be ''Non-bypassable'', so that an attacker cannot bypass the mechanism and violate the security policy. * The reference validation mechanism must be ''Evaluable'', i.e., amenable to analysis and tests, the completeness of which can be assured (verifiable). Without this property, the mechanism might be flawed in such a way that the security policy is not enforced. * The reference validation mechanism must be ''Always invoked''. Without this property, it is possible for the mechanism to not perform when intended, allowing an attacker to violate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winlogon
Winlogon (Windows Logon) is the component of Microsoft Windows operating systems that is responsible for handling the secure attention sequence, loading the user profile on logon, creates the desktops for the window station, and optionally locking the computer when a screensaver is running (requiring another authentication step). The roles and responsibilities of Winlogon have changed significantly in Windows Vista and later operating systems. Overview Winlogon is launched by the Session Manager Subsystem as a part of the booting process of Windows NT. Before Windows Vista, Winlogon was responsible for starting the Service Control Manager and the Local Security Authority Subsystem Service, but since Vista these have been launched by the Windows Startup Application (wininit.exe). The first part of the logon process Winlogon conducts is starting the process that shows the user the logon screen. Before Windows Vista this was done by GINA, but starting with Vista this is do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Service Control Manager
Service Control Manager (SCM) is a special system process under the Windows NT family of operating systems, which starts, stops and interacts with Windows service processes. It is located in the %SystemRoot%\System32\services.exe executable. Service processes interact with SCM through a well-defined API, and the same API is used internally by the interactive Windows service management tools such as the MMC snap-in Services.msc and the command-line Service Control utility sc.exe. Implementation The SCM executable, Services.exe, runs as a Windows console program and is launched by the Wininit process early during the system startup. Its main function, SvcCtrlMain(), launches all the services configured for automatic startup. First an internal database of installed services is initialized by reading the following two registry keys: * HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ServiceGroupOrder\List, containing the names and order of service groups. Each service's registry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Session Manager
The Session Manager Subsystem, or smss.exe, is a component of the Microsoft Windows NT family of operating systems, starting in Windows NT 3.1. It is executed during the startup process of those operating systems. Session initialization The Session Manager Subsystem is the first user-mode process started by the kernel. Once started it creates additional paging files with configuration data from HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management, the environment variables located at the registry entry HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment, and DOS device mappings (e.g. CON:, NUL:, AUX:, COM1:, COM2:, COM3:, COM4:, PRN:, LPT1:, LPT2:, LPT3:, and drive letters) listed at the HKLM\System\CurrentControlSet\Control\Session Manager\DOS Devices registry key. This can be used to create permanent subst drives. The manager is responsible for starting the kernel and user modes of the Win32 subsystem. This subsystem includes win32k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |