Introduction to the Solaris Operating Environment
... A software program resides on the hard disk and, when activated, an image or copy of that program is loaded into RAM. Programs remain in RAM as long as needed. When the programs are no longer required, they can be overwritten by copies of other programs. If the system is rebooted or experiences a po ...
... A software program resides on the hard disk and, when activated, an image or copy of that program is loaded into RAM. Programs remain in RAM as long as needed. When the programs are no longer required, they can be overwritten by copies of other programs. If the system is rebooted or experiences a po ...
I/O Requests to Hardware Operations
... - STREAM head interfaces with the user process - driver end interfaces with the device - zero or more STREAM modules between them. Each module contains a read queue and a write queue ...
... - STREAM head interfaces with the user process - driver end interfaces with the device - zero or more STREAM modules between them. Each module contains a read queue and a write queue ...
![[slides] Case study: Windows](http://s1.studyres.com/store/data/008424774_1-87b89c613bf8233f6d9038041cfe401c-300x300.png)
[slides] Case study: Windows
... The authentication package authenticates users whenever they attempt to access an object from a remote system. ...
... The authentication package authenticates users whenever they attempt to access an object from a remote system. ...
Operating Systems, 082
... All I/O instructions are privileged instructions I/O devices and CPU can execute concurrently CPU moves data between main memory and device controllers' buffers (done by device drivers) Device controllers interrupt upon completion Interrupts or Traps enable mode switching Operating syste ...
... All I/O instructions are privileged instructions I/O devices and CPU can execute concurrently CPU moves data between main memory and device controllers' buffers (done by device drivers) Device controllers interrupt upon completion Interrupts or Traps enable mode switching Operating syste ...
Notes on Operating Systems
... machine. It regains control if the user application performs a system call, or if there is a hardware interrupt. Exercise 1 How can the operating system guarantee that there will be a system call or interrupt, so that it will regain control? The operating system is a reactive program Another importa ...
... machine. It regains control if the user application performs a system call, or if there is a hardware interrupt. Exercise 1 How can the operating system guarantee that there will be a system call or interrupt, so that it will regain control? The operating system is a reactive program Another importa ...
Chapter 16: Windows 7
... existing one, by receiving a duplicated handle from another process, or by inheriting a handle from its parent process. Each object is protected by an access control list. The executive name space is extensible to allow naming of files, ...
... existing one, by receiving a duplicated handle from another process, or by inheriting a handle from its parent process. Each object is protected by an access control list. The executive name space is extensible to allow naming of files, ...
ch16.ppt
... The authentication package authenticates users whenever they attempt to access an object from a remote system. ...
... The authentication package authenticates users whenever they attempt to access an object from a remote system. ...
ch16
... The authentication package authenticates users whenever they attempt to access an object from a remote system. ...
... The authentication package authenticates users whenever they attempt to access an object from a remote system. ...
Chapter 16: Windows 7
... dispatcher objects control dispatching and synchronization (events, mutants, mutexes, semaphores, threads and timers) ! ...
... dispatcher objects control dispatching and synchronization (events, mutants, mutexes, semaphores, threads and timers) ! ...
"Virtual Machines: The State of the Art"
... mode. The architecture defines privileged instructions which, when executed in user mode, trap by calling an interrupt handler in ring 0. Virtual memory is implemented through segmentation and paging. Segments are identified by 16-bit segment selectors which contain the number of the least privilege ...
... mode. The architecture defines privileged instructions which, when executed in user mode, trap by calling an interrupt handler in ring 0. Virtual memory is implemented through segmentation and paging. Segments are identified by 16-bit segment selectors which contain the number of the least privilege ...
Advanced Operating System
... A computer’s operating system ( OS ) is a group of programs designed to serve two basic purposes: 1. To control the allocation and use of the computing system’s resources among the various users and tasks, and. 2. To provide an interface between the computer hardware and the programmer that simplifi ...
... A computer’s operating system ( OS ) is a group of programs designed to serve two basic purposes: 1. To control the allocation and use of the computing system’s resources among the various users and tasks, and. 2. To provide an interface between the computer hardware and the programmer that simplifi ...
WebPod: Persistent Web Browsing Sessions with
... on an encrypted file system. Therefore, even if the WebPod device is lost or stolen, an attacker will just be able to use it as his own personal storage device. A user starts WebPod by simply plugging in a WebPod portable storage device into the computer. The computer detects the device and automati ...
... on an encrypted file system. Therefore, even if the WebPod device is lost or stolen, an attacker will just be able to use it as his own personal storage device. A user starts WebPod by simply plugging in a WebPod portable storage device into the computer. The computer detects the device and automati ...
Secure Computer Organization and System Design (lecture 3)
... according to VMM policy. A VMM has only one allocator module, however, it accounts for most of the complexity of the VMM. It decides which system resources to provide to each VM, ensuring that two different VM’s do not get the same resource. 3. The final module type is the interpreter. For each priv ...
... according to VMM policy. A VMM has only one allocator module, however, it accounts for most of the complexity of the VMM. It decides which system resources to provide to each VM, ensuring that two different VM’s do not get the same resource. 3. The final module type is the interpreter. For each priv ...
Comparison of Erlang Runtime System and Java Virtual Machine
... order of execution between two threads. Which means that the correctness of the program depends on the OS scheduler, which is not deterministic, resulting in hard to reproduce errors. 3. Spending too much time in the critical section - occurs when a thread after acquiring a shared resources holds it ...
... order of execution between two threads. Which means that the correctness of the program depends on the OS scheduler, which is not deterministic, resulting in hard to reproduce errors. 3. Spending too much time in the critical section - occurs when a thread after acquiring a shared resources holds it ...
Threads - ukiacrew it
... space, with no kernel support. The latter involves system calls, and requires a kernel with thread library support. There are three main thread libraries in use today: ...
... space, with no kernel support. The latter involves system calls, and requires a kernel with thread library support. There are three main thread libraries in use today: ...
A Survey of Contemporary Real-time Operating Systems
... probability of missing a deadline can be tolerated. Systems in which performance is degraded but not destroyed by failure to meet response time constraints are called soft real-time systems. An embedded system is a specialized real-time computer system that is part of a larger system. In the past, i ...
... probability of missing a deadline can be tolerated. Systems in which performance is degraded but not destroyed by failure to meet response time constraints are called soft real-time systems. An embedded system is a specialized real-time computer system that is part of a larger system. In the past, i ...
Threads (and more on Processes)
... • Allows many user level threads to be mapped to many kernel threads • Allows the operating system to create a sufficient number of kernel threads • Solaris prior to version 9 • Windows NT/2000 with the ThreadFiber ...
... • Allows many user level threads to be mapped to many kernel threads • Allows the operating system to create a sufficient number of kernel threads • Solaris prior to version 9 • Windows NT/2000 with the ThreadFiber ...
Module 7: Process Synchronization
... there exist some processes that wish to enter their critical section, then the selection of the processes that will enter the critical section next cannot be postponed indefinitely 3. Bounded Waiting - A bound must exist on the number of times that other processes are allowed to enter their critical ...
... there exist some processes that wish to enter their critical section, then the selection of the processes that will enter the critical section next cannot be postponed indefinitely 3. Bounded Waiting - A bound must exist on the number of times that other processes are allowed to enter their critical ...
Real-Time Operating Systems
... Buy vs Roll your Own Scalability In-house tools are usually designed to meet exact specifications so it might be a good fit Commercial vendors allow significant customization of the kernel (in some cases a GUI for this purpose), so the notion of too much overhead code is unfounded Some commercial v ...
... Buy vs Roll your Own Scalability In-house tools are usually designed to meet exact specifications so it might be a good fit Commercial vendors allow significant customization of the kernel (in some cases a GUI for this purpose), so the notion of too much overhead code is unfounded Some commercial v ...
No Slide Title
... a base priority), and an affinity for one or more processors. Threads are the unit of execution scheduled by the kernel’s dispatcher. Each thread has its own state, including a priority, processor affinity, ...
... a base priority), and an affinity for one or more processors. Threads are the unit of execution scheduled by the kernel’s dispatcher. Each thread has its own state, including a priority, processor affinity, ...
ch22
... base priority), and an affinity for one or more processors Threads are the unit of execution scheduled by the kernel’s dispatcher Each thread has its own state, including a priority, processor affinity, and ...
... base priority), and an affinity for one or more processors Threads are the unit of execution scheduled by the kernel’s dispatcher Each thread has its own state, including a priority, processor affinity, and ...
ppt - Purdue University :: Computer Science
... that sits in between the hardware and the user programs. ...
... that sits in between the hardware and the user programs. ...
Chapter 8 Operating Systems and Utility Programs Chapter 8
... System software Operating systems Operating system functions Types of operating systems Stand-alone operating systems Network operating systems Embedded operating systems Utility programs ...
... System software Operating systems Operating system functions Types of operating systems Stand-alone operating systems Network operating systems Embedded operating systems Utility programs ...
Threads
... make blocking system calls while also achieving parallelism. Kernel-supported threads (Mach and OS/2). User-level threads; supported above the kernel, via a set of library ...
... make blocking system calls while also achieving parallelism. Kernel-supported threads (Mach and OS/2). User-level threads; supported above the kernel, via a set of library ...
Linux system
... Linux distribution includes all the standard components of the Linux system, plus a set of administrative tools to simplify the initial installation and subsequent upgrading of Linux and to manage installation and removal of other packages on the system. ...
... Linux distribution includes all the standard components of the Linux system, plus a set of administrative tools to simplify the initial installation and subsequent upgrading of Linux and to manage installation and removal of other packages on the system. ...