ch4
... Example -- summing the contents of an array of size N. On a single-core system, one thread would sum the elements 0 .. N-1. On a dual-core system, however, thread A, running on core 0, could sum the elements 0 .. N/2, while thread B, running on core 1, could sum the elements of N/2 .. N-1. The two t ...
... Example -- summing the contents of an array of size N. On a single-core system, one thread would sum the elements 0 .. N-1. On a dual-core system, however, thread A, running on core 0, could sum the elements 0 .. N/2, while thread B, running on core 1, could sum the elements of N/2 .. N-1. The two t ...
A Virtual Machine Introspection Based Architecture for Intrusion
... A virtual machine monitor (VMM) is a thin layer of software that runs directly on the hardware of a machine. The VMM exports a virtual machine abstraction (VM) that resembles the underlying hardware. This abstraction models the hardware closely enough that software which would run on the underlying ...
... A virtual machine monitor (VMM) is a thin layer of software that runs directly on the hardware of a machine. The VMM exports a virtual machine abstraction (VM) that resembles the underlying hardware. This abstraction models the hardware closely enough that software which would run on the underlying ...
A comprehensive cross-development tool chain and runtime
... model that makes it easy to break complex applications into simpler concurrent processes, communicating via high-speed direct messages. This makes complex applications easier to conceptualize, model, partition, and debug. It also provides transparency that separates applications from the details of ...
... model that makes it easy to break complex applications into simpler concurrent processes, communicating via high-speed direct messages. This makes complex applications easier to conceptualize, model, partition, and debug. It also provides transparency that separates applications from the details of ...
Threads (and more on Processes)
... • Web Server – How to support multiple concurrent requests • One solution: – create several processes that execute in parallel – Use shared memory (shmget()) to map to the same address space in the processes – have the OS schedule them in parallel ...
... • Web Server – How to support multiple concurrent requests • One solution: – create several processes that execute in parallel – Use shared memory (shmget()) to map to the same address space in the processes – have the OS schedule them in parallel ...
Threads Implementation
... communication to maintain the appropriate number of kernel threads allocated to the application/ • Typically use an intermediate data structure between user and kernel threads – lightweight process (LWP): – Appears to be a virtual processor on which process can schedule user thread to run. – Each LW ...
... communication to maintain the appropriate number of kernel threads allocated to the application/ • Typically use an intermediate data structure between user and kernel threads – lightweight process (LWP): – Appears to be a virtual processor on which process can schedule user thread to run. – Each LW ...
4.1. Threads
... • a register set • a stack. It shares with other threads belonging to the same process its • code section • data section • other operating-system resources • such as open files and signals. ...
... • a register set • a stack. It shares with other threads belonging to the same process its • code section • data section • other operating-system resources • such as open files and signals. ...
Chapter 4 Notes
... Lets you run lengthy operations in the background, like downloading data, Now your operations don’t have to interfere with your UI.(for example) This framework allows you to create asynchronous apps for iOS, ...
... Lets you run lengthy operations in the background, like downloading data, Now your operations don’t have to interfere with your UI.(for example) This framework allows you to create asynchronous apps for iOS, ...
Red Hat Enterprise Linux 5 EAL4 High-Level Design Version 1.0.1
... This document is provided “AS IS” with no express or implied warranties. Use the information in this document at your own risk. This document may be reproduced or distributed in any form without prior permission provided the copyright notice is retained on all copies. Modified versions of this docum ...
... This document is provided “AS IS” with no express or implied warranties. Use the information in this document at your own risk. This document may be reproduced or distributed in any form without prior permission provided the copyright notice is retained on all copies. Modified versions of this docum ...
The Application Kernel Approach - a Novel Approach for Adding
... logical processors [31] and several other manufacturers are in the process of introducing on-chip multiprocessors [21, 39]. With multiprocessors becoming prevalent, good operating system support is crucial to benefit from the increased computing capacity. We are currently working on a project togeth ...
... logical processors [31] and several other manufacturers are in the process of introducing on-chip multiprocessors [21, 39]. With multiprocessors becoming prevalent, good operating system support is crucial to benefit from the increased computing capacity. We are currently working on a project togeth ...
slide
... Protected access to processors, other processes (IPC), files, and I/O resources (devices & channels) ...
... Protected access to processors, other processes (IPC), files, and I/O resources (devices & channels) ...
Threads (continued)
... • move data between kernel and process address space on behalf of thread ...
... • move data between kernel and process address space on behalf of thread ...
OS-level Virtualization and Its Applications - ECSL
... First, I would like to thank my respectable advisor, Professor Tzi-cker Chiueh, who supports me financially and directs my PhD study for the past five years. Professor Chiueh always leads me to novel ideas and valuable research projects, which benefit my technical skills of both research and enginee ...
... First, I would like to thank my respectable advisor, Professor Tzi-cker Chiueh, who supports me financially and directs my PhD study for the past five years. Professor Chiueh always leads me to novel ideas and valuable research projects, which benefit my technical skills of both research and enginee ...
Chapter 4: Threads
... The register set, stacks, and private storage area are known as the context of the threads! ...
... The register set, stacks, and private storage area are known as the context of the threads! ...
Nachos OS
... always points to the thread currently occupying the CPU. Do not worry about threadToBeDestroyed for now, that is explained in the Threads section. • All operating systems need some hardware to execute processes. The Nachos Machine provides this functionality - it simulates the MIPS ...
... always points to the thread currently occupying the CPU. Do not worry about threadToBeDestroyed for now, that is explained in the Threads section. • All operating systems need some hardware to execute processes. The Nachos Machine provides this functionality - it simulates the MIPS ...
Advanced Operating System
... the user. Operating systems exit because they are supposed to make it easier to compute with an operating system than without an operating system. This is particularly clear when you look at operating system for small personal computers. A secondary goal is the efficient operation of an computer sys ...
... the user. Operating systems exit because they are supposed to make it easier to compute with an operating system than without an operating system. This is particularly clear when you look at operating system for small personal computers. A secondary goal is the efficient operation of an computer sys ...
What is a file system? - Montana State University
... • Linux keeps regular files and directories on block devices such as disks • A Linux installation may have several physical disk units, each containing one or more file system types • Partitioning a disk into several file system instances makes it easier for administrators to manage the data stored ...
... • Linux keeps regular files and directories on block devices such as disks • A Linux installation may have several physical disk units, each containing one or more file system types • Partitioning a disk into several file system instances makes it easier for administrators to manage the data stored ...
Lecture-Review-Process
... • In cooperative multi-threading, a context switch can occur only if a thread voluntarily offers the CPU to (any) other thread (“yield”); later resumes and returns – Can build resource abstractions on top where threads yield if they cannot obtain the abstracted resource ...
... • In cooperative multi-threading, a context switch can occur only if a thread voluntarily offers the CPU to (any) other thread (“yield”); later resumes and returns – Can build resource abstractions on top where threads yield if they cannot obtain the abstracted resource ...
xv6 - PDOS-MIT
... and to provide a more useful set of services than the hardware alone supports. The operating system manages and abstracts the low-level hardware, so that, for example, a word processor need not concern itself with which type of disk hardware is being used. It also multiplexes the hardware, allowing ...
... and to provide a more useful set of services than the hardware alone supports. The operating system manages and abstracts the low-level hardware, so that, for example, a word processor need not concern itself with which type of disk hardware is being used. It also multiplexes the hardware, allowing ...
SLES High Level Design Version 3.16 1
... Disk-based file systems................................................................................. 65 5.1.2.1 ext3 file system ......................................................................................... 65 5.1.2.2 ISO 9660 file system for CD-ROM .................................. ...
... Disk-based file systems................................................................................. 65 5.1.2.1 ext3 file system ......................................................................................... 65 5.1.2.2 ISO 9660 file system for CD-ROM .................................. ...
Chapter 4: Threads
... To discuss the APIs for the Pthreads, Windows, and Java thread libraries To explore several strategies that provide implicit threading To examine issues related to multithreaded programming To cover operating system support for threads in Windows and Linux Operating System Concepts – 9th Edi ...
... To discuss the APIs for the Pthreads, Windows, and Java thread libraries To explore several strategies that provide implicit threading To examine issues related to multithreaded programming To cover operating system support for threads in Windows and Linux Operating System Concepts – 9th Edi ...
Figure 5.01
... implementation is up to development of the library May be provided either as user-level or kernel-level Common in UNIX operating systems (Solaris, Linux, ...
... implementation is up to development of the library May be provided either as user-level or kernel-level Common in UNIX operating systems (Solaris, Linux, ...
Installation and Configuration Guide for Linux
... Effects and Finishing application. Soft-imported clips are an example of unmanaged media. This is relevant in shared access workflows, where numerous applications are using the same media. Unmanaged media is used in projects and clip libraries in the same way as managed media. However, the applicati ...
... Effects and Finishing application. Soft-imported clips are an example of unmanaged media. This is relevant in shared access workflows, where numerous applications are using the same media. Unmanaged media is used in projects and clip libraries in the same way as managed media. However, the applicati ...
Plan 9 from Bell Labs
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Plan 9 from Bell Labs is a distributed operating system, originally developed by the Computing Sciences Research Center at Bell Labs between the mid-1980s and 2002. It takes some of the principles of Unix, developed in the same research group, but extends these to a networked environment with graphics terminals.In Plan 9, virtually all computing resources, including files, network connections, and peripheral devices, are represented through the file system rather than specialized interfaces. A unified network protocol called 9P ties a network of computers running Plan 9 together, allowing them to share all resources so represented.The name Plan 9 from Bell Labs is a reference to the Ed Wood 1959 cult science fiction Z-movie Plan 9 from Outer Space. Also, Glenda, the Plan 9 Bunny, is presumably a reference to Wood's film Glen or Glenda. The system continues to be used and developed by operating system researchers and hobbyists.