Microsoft Technology Licensing, LLC

Richard Allen Pletcher

Ralph A Lipe

John MacIntyre

Andrew T Mason

William A Laing

Jason L Cohen

Wesley G Miller

Bruce L Green

Arun Upadhyaya Kishan

Saad Syed

Innokentiy Basmov

Emily Nicole Wilson

Stuart Raymond Patrick

Scott Daniel Anderson

David J D'Souza

David John Linsley

Alain Franck Gefflaut

Alex Mark Semenko

Amit Chatterjee

Anil A Ingle

Malcolm James Smith

Kinshuman Kinshumann

Michael J Grass

Peter M Wilson

Alex Bendetov

Michael Scott Gibson

James Aaron Holmes

Andrey Shedel

Karthik Thirumalai

Myung Ryul Jang

Curtis D Smith

Patrick B Azzarello

Aaron M Farmer

Troy E Shaw

Bryan W Fagan

A computer operating system with a map that relates API namespaces to components that implement an interface contracts for the namespaces. When an API namespace is to be used, a loader within the operating system uses the map to load components based on the map. An application can reference an API namespace in the same way as it references a dynamically linked library, but the implementation of the interface contract for the API namespace is not tied to a single file or to a static collection of files. The map may identify versions of the API namespace or values of runtime parameters that may be used to select appropriate files to implement an interface contract in scenarios that may depend on factors such as hardware in the execution environment, a version of the API namespace against which an application was developed or the application accessing the API namespace.

API namespace virtualization

Embodiments of the disclosure provide access to data in a compressed container through dynamic redirection, without storing decompressed data in persistent memory. The compressed container is stored in a first portion of memory. User data and reference files, with redirect pointers, for accessing corresponding files in the compressed container are stored in a second portion of memory. A command to access data is detected by a computing device. The redirect pointer in the reference file associated with the command redirects access to the corresponding compressed version of data stored in the compressed container. The corresponding accessed compressed version of data is decompressed on the fly and provided in response to the command without storing the decompressed data in persistent memory. Some embodiments provide integrity protection to validate the data coming from the compressed container.

Accessing data in a compressed container through dynamic redirection

The described systems and methods are directed at configuring a server based on a selected role. An installation application is configured to install core components in a server where these core components enable the server to perform the basic functions of a network computing device. A role management application is configured to enable a system administrator to select a role for the server and to automatically determine software components associated with the selected role. The role management application is then configured to build the software components and install the components on the server. The role management application is further configured to configure the components for the selected role. The automated installation process performed by the role management application enables a server to be efficiently configured for a particular role without installing other unnecessary components unrelated to the role.

Role based server installation and configuration

A computing device is configured to assemble and boot an operating system in stages. A primary boot image is first obtained that includes enough of the operating system to support basic networking. Once the primary boot image is obtained, either through download or from storage on the device, the primary boot image is booted to start the networking. Once the networking is active, the boot activity for the device is suspended and one or more secondary operating system images are downloaded by the device. These images are chained to the primary boot image thereby creating a single/cohesive operating system. These secondary operating system images are successively booted in 'stages' with each successive stage building upon the functionality of the previous stage.

Booting an operating system in discrete stages

Accessing files within a compressed image to boot from the compressed image. In one embodiment, the compressed image includes a boot environment and a software image combined to reduce file redundancy. The invention boots into the boot environment within the compressed image to install the software image on a computer.

Booting from a compressed image

A method and system for providing a common operating system feature set for supporting a variety of operating system configurations is described. The common operating system feature set is organized to provide a minimal memory footprint applicable to a number of devices and methods of deployment. The common operating system includes dependencies among operating system components that provide a selection of integrated components that are validated for reliability. The common operating system includes an application program interface set that provides functionality for a variety of operating system scenarios.

Method and system for providing a common operating system

A system, method, and medium are disclosed for undocking content from a window into sub-windows. The undocked sub-windows may be redocked to the parent window. The sub-windows may continue to exist after an application providing the window has been closed.

Undockable sub-windows

A method and apparatus for providing access to a banked peripheral memory via a contiguous linear address space. The present invention provides a linear address space having a present region that is mapped to a host memory region of a computer system. The present invention further provides a relocatable selector that provides access to a portion of the linear address space. Accessing programs exchange data with the banked peripheral memory via the relocatable linear address space. When an accessing program references an address of the relocatable address base that is not mapped to the present region, the relocatable linear address space is positioned so that the referenced address maps to the present region. Additionally, a bank of the peripheral memory that corresponds to the referenced address is also mapped into the host memory region so as to enable the accessing program to exchange data with the banked peripheral memory via the relocatable linear address space.

Method and apparatus for simulating banked memory as a linear address

An operating system component allocates locked stack memory pages to threads on an as needed basis. Each thread has a permanent locked stack. A second locked stack page is mapped to each thread. If a thread is using the assignable locked stack page when the system scheduler switches away from that thread, the assignable stack page becomes owned by that thread. When the system scheduler switches to a thread the assignable stack page mapped to that thread is checked to see if it is owned by another thread. If so, an unowned assignable stack page is mapped to the thread prior to switching to that thread. The size of the pool of locked assignable stack pages is adjusted dynamically. If the number of unowned assignable stack pages exceeds a threshold, locked stack pages are released. If the number of locked assignable stack pages falls below a predetermined number, additional assignable stack pages are allocated.

System and method for reducing stack physical memory requirements in a

An interrupt handler may be run in multiple processor modes on a data processing system having a processor for executing instructions and a memory for storing information. The sharing of interrupt handler code across multiple processor modes minimizes the switching between processor modes during the handling of interrupts. The mode in which the interrupt handler executes is dictated by the current processor mode. The indicator of the current processor mode directs the interrupt handler to use information that is appropriate for the current processor mode.

Mechanism for using common code to handle hardware interrupts in

Deadlocks are avoided in an operating system that provides a demand paged memory. A process is granted access to only one page frame in the memory. As the memory is demand paged, a potential for a deadlock arises. The deadlocks may be avoided by determining whether a page currently in the page frame has been accessed. If the page in the page frame has not yet been accessed, a deadlock is imminent.

Avoidance of deadlocks in a demand paged video adapter

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Redmond, WA, United States of America

Richard Allen Pletcher