PowerPoint Format
... PC hardware, but also runs on a variety of other platforms. The core Linux operating system kernel is entirely original, but it can run much existing free UNIX software, resulting in an entire UNIX-compatible operating system free from proprietary code. ...
... PC hardware, but also runs on a variety of other platforms. The core Linux operating system kernel is entirely original, but it can run much existing free UNIX software, resulting in an entire UNIX-compatible operating system free from proprietary code. ...
Operating system components 1.process management 2.memory
... and there are many applications that run on it. It has an easy-to-use Graphical User Interface (GUI). Windows NT - Windows NT is another Microsoft operating system that is beginning to really catch on because of it's networking capabilities. Microsoft is trying to slowly phase out Windows 95/98 and ...
... and there are many applications that run on it. It has an easy-to-use Graphical User Interface (GUI). Windows NT - Windows NT is another Microsoft operating system that is beginning to really catch on because of it's networking capabilities. Microsoft is trying to slowly phase out Windows 95/98 and ...
Operating Systems
... and there are many applications that run on it. It has an easy-to-use Graphical User Interface (GUI). Windows NT - Windows NT is another Microsoft operating system that is beginning to really catch on because of it's networking capabilities. Microsoft is trying to slowly phase out Windows 95/98 and ...
... and there are many applications that run on it. It has an easy-to-use Graphical User Interface (GUI). Windows NT - Windows NT is another Microsoft operating system that is beginning to really catch on because of it's networking capabilities. Microsoft is trying to slowly phase out Windows 95/98 and ...
Lec10-OS-process - ECE Users Pages
... Operating System Concepts Process Management Main Memory Management File Management I/O System Management Secondary Management ...
... Operating System Concepts Process Management Main Memory Management File Management I/O System Management Secondary Management ...
(a) and (b)
... differ in different operating systems, and the names of these states are also not standardized. In general, a process can have one of the following five states at a time. State & Description 1. Start: This is the initial state when a process is first started/created. 2. Ready: The process is waiting ...
... differ in different operating systems, and the names of these states are also not standardized. In general, a process can have one of the following five states at a time. State & Description 1. Start: This is the initial state when a process is first started/created. 2. Ready: The process is waiting ...
Handout
... (In Unix, the wrapper function often has the same name as the syscall. All wrapper functions have names beginning with Sys_ just to help make the distinction between wrapper and syscall.) Each wrapper function works the same way. It invokes an assembly language routine called DoSyscall, which execut ...
... (In Unix, the wrapper function often has the same name as the syscall. All wrapper functions have names beginning with Sys_ just to help make the distinction between wrapper and syscall.) Each wrapper function works the same way. It invokes an assembly language routine called DoSyscall, which execut ...
Interacting with a c..
... Function of files/directories contained in directory home directories of users binary files: files that contain machine instructions devices: contains files that link to disk drives, keyboard and other devices library files: support files for various high level programming languages temporally files ...
... Function of files/directories contained in directory home directories of users binary files: files that contain machine instructions devices: contains files that link to disk drives, keyboard and other devices library files: support files for various high level programming languages temporally files ...
Objectives of KeyKOS
... various parts of OS can be designed, implemented, tested and executed independently as components of OS and their mutual relations can change over time, the evolution is easy to take place more operating systems can run on top of microkernel simultaneously ...
... various parts of OS can be designed, implemented, tested and executed independently as components of OS and their mutual relations can change over time, the evolution is easy to take place more operating systems can run on top of microkernel simultaneously ...
COS 318: Operating Systems I/O Device and Drivers
... (available in Solaris, AIX, Tru64 Unix, Linux 2.6,…) aio_cancel: cancel asynchronous read/write requests aio_error: retrieve Asynchronous I/O error status aio_fsync: asynchronously force I/O completion, and sets errno to ENOSYS aio_read: begin asynchronous read aio_return: retrieve st ...
... (available in Solaris, AIX, Tru64 Unix, Linux 2.6,…) aio_cancel: cancel asynchronous read/write requests aio_error: retrieve Asynchronous I/O error status aio_fsync: asynchronously force I/O completion, and sets errno to ENOSYS aio_read: begin asynchronous read aio_return: retrieve st ...
Lecture 6
... need to read and write files and directories, create and delete them, search them, list file Information, permission management. – Communications – Processes may exchange information, on the same computer or between computers over a network • Communications may be via shared memory or through messag ...
... need to read and write files and directories, create and delete them, search them, list file Information, permission management. – Communications – Processes may exchange information, on the same computer or between computers over a network • Communications may be via shared memory or through messag ...
Lab - 5th Semester Notes
... the OS and all other files. This is the main machine on which all processing is done. All other machines connected to this main machine are known as nodes or clients. They are merely a screen and keyboard connection. All commands or programs specified at these nodes are actually run on the server. P ...
... the OS and all other files. This is the main machine on which all processing is done. All other machines connected to this main machine are known as nodes or clients. They are merely a screen and keyboard connection. All commands or programs specified at these nodes are actually run on the server. P ...
operation
... • the interaction (information and control flows) within the module is high, • the interaction between modules is low, • the interfaces between the modules are simple, • the modules are easily understandable due to their limited size and complexity. ...
... • the interaction (information and control flows) within the module is high, • the interaction between modules is low, • the interfaces between the modules are simple, • the modules are easily understandable due to their limited size and complexity. ...
1) Routine is not loaded until it is called. All routines are kept on disk
... load format. The main program is loaded into memory & is executed. This type of loading is called _________ ...
... load format. The main program is loaded into memory & is executed. This type of loading is called _________ ...
1. A(n) ______ is the unit of work in a system. A) process B
... A) gathers together multiple CPUs to accomplish computational work B) is an operating system that provides file sharing across a network C) is used when rigid time requirements are present D) can only operate one application at a time Ans: A 21. An initial bootstrap program is in the form of random- ...
... A) gathers together multiple CPUs to accomplish computational work B) is an operating system that provides file sharing across a network C) is used when rigid time requirements are present D) can only operate one application at a time Ans: A 21. An initial bootstrap program is in the form of random- ...
ppt - University of Illinois at Urbana
... operating system, describe their purpose, and explain how they function. Write, compile, debug, and execute C programs that correctly use system interfaces provided by UNIX (or a UNIXlike operating system). ...
... operating system, describe their purpose, and explain how they function. Write, compile, debug, and execute C programs that correctly use system interfaces provided by UNIX (or a UNIXlike operating system). ...
system call - efreidoc.fr
... operating system code is organised into a series of independent processes called servers each server provides a set of services to other parts of the operating system or to user programs via a defined interface of service requests requesting process (client) requests service by sending a message to ...
... operating system code is organised into a series of independent processes called servers each server provides a set of services to other parts of the operating system or to user programs via a defined interface of service requests requesting process (client) requests service by sending a message to ...
ppt - McMaster CAS Dept.
... including the Program Status Word (PSW), • Memory management information • Very system specific, ...
... including the Program Status Word (PSW), • Memory management information • Very system specific, ...
Module 4: Processes
... As the OS grows, the complexity becomes overwhelming. Example: OS/360 version 1 created by 5000 programmers over 5 years. In 1964, had over 1 million lines of code. Modular systems: Divide OS into modules. Example: Original UNIX had 2 modules. System programs (e.g. emacs, compiler) T ...
... As the OS grows, the complexity becomes overwhelming. Example: OS/360 version 1 created by 5000 programmers over 5 years. In 1964, had over 1 million lines of code. Modular systems: Divide OS into modules. Example: Original UNIX had 2 modules. System programs (e.g. emacs, compiler) T ...
Midterm Review
... Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Mostly accessed by programs via a high-level Application Program Interface (API) rather than direct system call use Three most common APIs are Win32 API for Windows, POSIX API for POSIX-bas ...
... Programming interface to the services provided by the OS Typically written in a high-level language (C or C++) Mostly accessed by programs via a high-level Application Program Interface (API) rather than direct system call use Three most common APIs are Win32 API for Windows, POSIX API for POSIX-bas ...
CHAP4
... • Takes less time to create a new thread than a process • Less time to terminate a thread than a process • Less time to switch between two threads within the same process • Since threads within the same process share memory and files, they can communicate with each other without invoking the kernel ...
... • Takes less time to create a new thread than a process • Less time to terminate a thread than a process • Less time to switch between two threads within the same process • Since threads within the same process share memory and files, they can communicate with each other without invoking the kernel ...
GC University Lahore
... applied nature of Operating Systems. All modern high performance computer systems are managed by robust, secure and scalable operating systems. Modern high-end operating systems are multitasking, multiprocessing and multi-user. All desktop Operating systems and most of server operating systems provi ...
... applied nature of Operating Systems. All modern high performance computer systems are managed by robust, secure and scalable operating systems. Modern high-end operating systems are multitasking, multiprocessing and multi-user. All desktop Operating systems and most of server operating systems provi ...