the thread - Bilkent University Computer Engineering Department
... • thread-local: global inside the thread (thread-wide global), but not global for the whole process. Other threads can not access it. But all functions of the thread can. • But we don’t have language support to define such variables. – C can not do that. • Therefore thread API has special functions ...
... • thread-local: global inside the thread (thread-wide global), but not global for the whole process. Other threads can not access it. But all functions of the thread can. • But we don’t have language support to define such variables. – C can not do that. • Therefore thread API has special functions ...
PPT Chapter 13
... • File system data structures – A directory entry contains only the file name – Inode of a file contains file size, owner id, access permissions and disk block allocation information – A file structure contains information about an open file • It contains current position in file, and pointer to its ...
... • File system data structures – A directory entry contains only the file name – Inode of a file contains file size, owner id, access permissions and disk block allocation information – A file structure contains information about an open file • It contains current position in file, and pointer to its ...
Module 4: Processes
... save the state of the old process and load the saved state for the new process. Context-switch time is overhead; the system does no ...
... save the state of the old process and load the saved state for the new process. Context-switch time is overhead; the system does no ...
, Frameworks and Refinement* Choices H.
... and provides new services. The abstract machine is presented as a set of subroutines. A framework introduces classes of components that encapsulate machine dependencies and define new services. A layer introduces an interface between implementations that is constrained by the set of calls that are d ...
... and provides new services. The abstract machine is presented as a set of subroutines. A framework introduces classes of components that encapsulate machine dependencies and define new services. A layer introduces an interface between implementations that is constrained by the set of calls that are d ...
Transparent Process Migration: Design Alternatives and the Sprite Implementation
... into the kernel. In such a system the solution to the transparency problem is not as obvious; in the worst case, every kernel call might have to be specially coded to handle remote processes differently than local ones. We consider this issue in greater depth below. 4. Sprite already provides networ ...
... into the kernel. In such a system the solution to the transparency problem is not as obvious; in the worst case, every kernel call might have to be specially coded to handle remote processes differently than local ones. We consider this issue in greater depth below. 4. Sprite already provides networ ...
INF5070 – Media Storage and Distribution Systems
... high priorities for time-restrictive multimedia tasks timer support – clock with fine granularity and event scheduling with high accuracy kernel preemption – avoid long periods where low priority processes cannot be interrupted memory replacement – prevent code for real-time programs from bein ...
... high priorities for time-restrictive multimedia tasks timer support – clock with fine granularity and event scheduling with high accuracy kernel preemption – avoid long periods where low priority processes cannot be interrupted memory replacement – prevent code for real-time programs from bein ...
Operating-System Structures
... permanently, the computer system must provide secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following activities in connection with disk management: ...
... permanently, the computer system must provide secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following activities in connection with disk management: ...
File - BS
... process in the same fashion. Typically there is a difference between interactive process and non-interactive process. The interactive process generally require much faster response time than non interactive process. These process can be separated and can be scheduled separately. The interactive proc ...
... process in the same fashion. Typically there is a difference between interactive process and non-interactive process. The interactive process generally require much faster response time than non interactive process. These process can be separated and can be scheduled separately. The interactive proc ...
Process Control and Description
... A process can be thought as a program in execution, or more precisely, a unit of activity specified by the execution of a sequence of instructions, a specific state, and an associated collection of system resources. A process fundamentally consists of two static pieces: a segment of program code and ...
... A process can be thought as a program in execution, or more precisely, a unit of activity specified by the execution of a sequence of instructions, a specific state, and an associated collection of system resources. A process fundamentally consists of two static pieces: a segment of program code and ...
OperatingSystems_FA15_3_Process
... Child exceeded resource usage ( shared with parent and other child processes ). Child’s program execution not needed. Parent termination. ...
... Child exceeded resource usage ( shared with parent and other child processes ). Child’s program execution not needed. Parent termination. ...
LINUX
... Virtually every system utility that you would expect to find on standard implementations of UNIX (including every system utility described in the POSIX.2 specification) has been ported to Linux. This includes commands such as ls, cp, grep, awk, sed, bc, wc, more, and so on. These system utilities ar ...
... Virtually every system utility that you would expect to find on standard implementations of UNIX (including every system utility described in the POSIX.2 specification) has been ported to Linux. This includes commands such as ls, cp, grep, awk, sed, bc, wc, more, and so on. These system utilities ar ...
Proceedings of the General Track: 2003 USENIX Annual Technical Conference
... called UMLinux [Buchacker01]. UMLinux was developed by researchers at the University of Erlangen-Nürnberg for use in fault-injection experiments. UMLinux is a Type II VMM: the guest operating system and all guest applications run as a single process (the guestmachine process) on a host Linux operati ...
... called UMLinux [Buchacker01]. UMLinux was developed by researchers at the University of Erlangen-Nürnberg for use in fault-injection experiments. UMLinux is a Type II VMM: the guest operating system and all guest applications run as a single process (the guestmachine process) on a host Linux operati ...
1.01 - UCSB Computer Science
... Group identifier (group ID) allows set of users to be defined and controls managed, then also associated with each process, file Privilege escalation allows user to change to effective ID with ...
... Group identifier (group ID) allows set of users to be defined and controls managed, then also associated with each process, file Privilege escalation allows user to change to effective ID with ...
Slides
... There are none The best one can do is collect together a sequence of contiguous (or nearby) sectors for writing Write them in a single sequence of disk actions Caching for later writing is (usually) a bad idea Application has no confidence that data is actually written before a failure ...
... There are none The best one can do is collect together a sequence of contiguous (or nearby) sectors for writing Write them in a single sequence of disk actions Caching for later writing is (usually) a bad idea Application has no confidence that data is actually written before a failure ...
4.1. Threads
... In this method, the kernel knows about and manages the threads. No runtime system is needed in this case. Instead of thread table in each process, the kernel has a thread table that keeps track of all threads in the system. In addition, the kernel also maintains the traditional process table ...
... In this method, the kernel knows about and manages the threads. No runtime system is needed in this case. Instead of thread table in each process, the kernel has a thread table that keeps track of all threads in the system. In addition, the kernel also maintains the traditional process table ...
threads - Bilkent University Computer Engineering Department
... • thread-local: global inside the thread (thread-wide global), but not global for the whole process. Other threads can not access it. But all functions of the thread can. • But we don’t have language support to define such variables. – C can not do that. • Therefore thread API has special functions ...
... • thread-local: global inside the thread (thread-wide global), but not global for the whole process. Other threads can not access it. But all functions of the thread can. • But we don’t have language support to define such variables. – C can not do that. • Therefore thread API has special functions ...
Powerpoint format
... Named pipes can be created within programs by using a command: mknod ( “mypipe”, SIFIFO, 0 ); Once a named pipe is created, processes can open(), read() and write() them just like any other file. There is a difference however from normal files Operating Systems Workshop CIT, Arid Agriculture Univers ...
... Named pipes can be created within programs by using a command: mknod ( “mypipe”, SIFIFO, 0 ); Once a named pipe is created, processes can open(), read() and write() them just like any other file. There is a difference however from normal files Operating Systems Workshop CIT, Arid Agriculture Univers ...
Operating System Support for Virtual Machines
... called UMLinux [Buchacker01]. UMLinux was developed by researchers at the University of Erlangen-Nürnberg for use in fault-injection experiments. UMLinux is a Type II VMM: the guest operating system and all guest applications run as a single process (the guestmachine process) on a host Linux operati ...
... called UMLinux [Buchacker01]. UMLinux was developed by researchers at the University of Erlangen-Nürnberg for use in fault-injection experiments. UMLinux is a Type II VMM: the guest operating system and all guest applications run as a single process (the guestmachine process) on a host Linux operati ...
Operating System Support for Virtual Machines
... called UMLinux [Buchacker01]. UMLinux was developed by researchers at the University of Erlangen-Nürnberg for use in fault-injection experiments. UMLinux is a Type II VMM: the guest operating system and all guest applications run as a single process (the guestmachine process) on a host Linux operati ...
... called UMLinux [Buchacker01]. UMLinux was developed by researchers at the University of Erlangen-Nürnberg for use in fault-injection experiments. UMLinux is a Type II VMM: the guest operating system and all guest applications run as a single process (the guestmachine process) on a host Linux operati ...
2. Operating System Case Study: Linux
... for minicomputer for commercial applications People was looking for a UNIX based system, which i cheaper is h and d can run on PC Both DOS, MAC and UNIX are proprietary, i.e., the protected source code of their kernel is p – No modification is possible without paying high license fees ...
... for minicomputer for commercial applications People was looking for a UNIX based system, which i cheaper is h and d can run on PC Both DOS, MAC and UNIX are proprietary, i.e., the protected source code of their kernel is p – No modification is possible without paying high license fees ...
Chap3
... ensuring efficient system operations. • Resource allocation – allocating resources to multiple users or multiple jobs running at the same time. • Accounting – keep track of and record which users use how much and what kinds of computer resources for account billing or for accumulating usage statisti ...
... ensuring efficient system operations. • Resource allocation – allocating resources to multiple users or multiple jobs running at the same time. • Accounting – keep track of and record which users use how much and what kinds of computer resources for account billing or for accumulating usage statisti ...
Chapter 1 – 8 Essay Question Review
... operations (i.e., cache, random access memory, etc.). Virtual memory is a ...
... operations (i.e., cache, random access memory, etc.). Virtual memory is a ...