Adopting and Commenting the Old Kernel Source Code for Education
... first read into the cache area from the block device. When a task needs to output the data to a block device, the data is put into the cache area first and then is written into the block device by the hardware driver in due time. The last part of the physical memory is the main area used dynamically ...
... first read into the cache area from the block device. When a task needs to output the data to a block device, the data is put into the cache area first and then is written into the block device by the hardware driver in due time. The last part of the physical memory is the main area used dynamically ...
Components of a Linux System
... Its history has been one of collaboration by many users from all around the world, corresponding almost exclusively over the Internet ...
... Its history has been one of collaboration by many users from all around the world, corresponding almost exclusively over the Internet ...
Lecture 4 - IT, Sligo
... Deadlock prevention means that deadlock will not occur due to fact that we deny one of the 4 conditions necessary. Innefficient Deadlock avoidance attempts to predict the possibility of deadlock as each resources request is made. Example if process A requests a resource held by process B then make s ...
... Deadlock prevention means that deadlock will not occur due to fact that we deny one of the 4 conditions necessary. Innefficient Deadlock avoidance attempts to predict the possibility of deadlock as each resources request is made. Example if process A requests a resource held by process B then make s ...
A Survey of Embedded Operating System
... wait object allow a thread to block its own execution until the specified object changes. Windows CE queues mutex, critical section and event requests in "FIFO-by-priority" order: a different FIFO queue is defined for each of the 8 priority levels. Real-time application use interrupts as a way of e ...
... wait object allow a thread to block its own execution until the specified object changes. Windows CE queues mutex, critical section and event requests in "FIFO-by-priority" order: a different FIFO queue is defined for each of the 8 priority levels. Real-time application use interrupts as a way of e ...
Advanced Operating Systems: Review of Operating System Concepts
... – One or more CPUs, device controllers connect through common bus providing access to shared memory – Concurrent execution of CPUs and devices competing for memory ...
... – One or more CPUs, device controllers connect through common bus providing access to shared memory – Concurrent execution of CPUs and devices competing for memory ...
Kernel - Duke University
... – Load new thread’s register values from memory. – (Think of driver settings for the seat, mirrors, audio…) – Enables time slicing or time sharing of machine. ...
... – Load new thread’s register values from memory. – (Think of driver settings for the seat, mirrors, audio…) – Enables time slicing or time sharing of machine. ...
Higher National Unit specification: general information Unit title
... Given the theoretical nature of this Unit, it is intended that a significant amount of time will be made available as a central part of the course for revision, tutorials and formative assessment exercises. Candidates should be strongly encouraged to undertake further reading, and opportunities for ...
... Given the theoretical nature of this Unit, it is intended that a significant amount of time will be made available as a central part of the course for revision, tutorials and formative assessment exercises. Candidates should be strongly encouraged to undertake further reading, and opportunities for ...
2. Operating Systems
... write, create, and delete files. Communications – exchange of information between processes executing either on the same computer or on different systems tied together by a network. Implemented via shared memory or message passing. Error detection – ensure correct computing by detecting errors in th ...
... write, create, and delete files. Communications – exchange of information between processes executing either on the same computer or on different systems tied together by a network. Implemented via shared memory or message passing. Error detection – ensure correct computing by detecting errors in th ...
Kernel
... – memory resident part of UNIX – majority written in C rest in assembler language (HW dependent, speed) – a.out (a plain C a.out program) – consists of functions • other programs can call (some of) these functions • called “system call function” ...
... – memory resident part of UNIX – majority written in C rest in assembler language (HW dependent, speed) – a.out (a plain C a.out program) – consists of functions • other programs can call (some of) these functions • called “system call function” ...
Chapter 2: Operating
... Another set of OS functions exists for ensuring the efficient operation of the system itself via resource sharing ...
... Another set of OS functions exists for ensuring the efficient operation of the system itself via resource sharing ...
9. Application/Kernel Interface
... Access to non-existent page of the process → no error but need to allocate (and maybe copy) a page on demand Access to a page outside the process space → issue a segmentation/page fault The kernel function itself is buggy and accesses and illegal address → call oops() (possibly leading to “kernel pa ...
... Access to non-existent page of the process → no error but need to allocate (and maybe copy) a page on demand Access to a page outside the process space → issue a segmentation/page fault The kernel function itself is buggy and accesses and illegal address → call oops() (possibly leading to “kernel pa ...
LINUX
... For example, an OS ensures safe access to a printer by allowing only one application program to send data directly to the printer at any one time. An OS encourages efficient use of the CPU by suspending programs that are waiting for I/O operations to complete to make way for programs that can use th ...
... For example, an OS ensures safe access to a printer by allowing only one application program to send data directly to the printer at any one time. An OS encourages efficient use of the CPU by suspending programs that are waiting for I/O operations to complete to make way for programs that can use th ...
Ch_04
... 4.4 Which of the following components of program state are shared across threads in a multithreaded process? a. Register values b. Heap memory c. Global variables d. Stack memory Answer: The threads of a multithreaded process share heap memory and global variables. Each thread has its separate set o ...
... 4.4 Which of the following components of program state are shared across threads in a multithreaded process? a. Register values b. Heap memory c. Global variables d. Stack memory Answer: The threads of a multithreaded process share heap memory and global variables. Each thread has its separate set o ...
Appendix C - Windows 2000
... system uses the profile object to measure the amount of time used by a block of code. C.3.2.1 Threads and Scheduling As do many modern operating systems, Windows 2000 uses the notions of processes and threads for executable code. The process has a virtual-memory address space, and information such a ...
... system uses the profile object to measure the amount of time used by a block of code. C.3.2.1 Threads and Scheduling As do many modern operating systems, Windows 2000 uses the notions of processes and threads for executable code. The process has a virtual-memory address space, and information such a ...
Chapter 2: Operating-System Structures Silberschatz, Galvin and Gagne ©2013 – 9
... For ensuring the efficient operation of the system itself via resource sharing ...
... For ensuring the efficient operation of the system itself via resource sharing ...
Chapter 2 – Operating System Overview
... 9) The earliest computers employed __________ processing, a name derived by the way the users have access to the systems. Answer: serial 10) __________ was designed to keep the processor and I/O devices, including storage devices, simultaneously busy to achieve maximum efficiency. Answer: Multiprogr ...
... 9) The earliest computers employed __________ processing, a name derived by the way the users have access to the systems. Answer: serial 10) __________ was designed to keep the processor and I/O devices, including storage devices, simultaneously busy to achieve maximum efficiency. Answer: Multiprogr ...
1.01
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
What is an Operating System?
... wait for I/O completion Device-status table contains entry for each I/O device indicating its type, address, and state Operating system indexes into I/O device table to determine device status and to modify table entry to include interrupt ...
... wait for I/O completion Device-status table contains entry for each I/O device indicating its type, address, and state Operating system indexes into I/O device table to determine device status and to modify table entry to include interrupt ...
Processes - UniMAP Portal
... call, not only the thread is blocked, the whole process is blocked The threads cannot run on multiple processors (As the kernel only assign one processor for one process at a time) ...
... call, not only the thread is blocked, the whole process is blocked The threads cannot run on multiple processors (As the kernel only assign one processor for one process at a time) ...
Thread - Nipissing University Word
... level: By providing abstractions of the basic resources such as: processes, unlimited virtual memory, files, communication channels Protection of the resources used by applications Concurrent processing to enable applications to complete their work with minimum interference from other applicat ...
... level: By providing abstractions of the basic resources such as: processes, unlimited virtual memory, files, communication channels Protection of the resources used by applications Concurrent processing to enable applications to complete their work with minimum interference from other applicat ...
Chapter08
... Discuss a variety of stand-alone operating systems, network operating systems, and embedded operating systems Discuss the functions common to most operating systems ...
... Discuss a variety of stand-alone operating systems, network operating systems, and embedded operating systems Discuss the functions common to most operating systems ...