Module 3: Operating
... users or multiple jobs running at the same time. Accounting – keeping track of and recording how much and what kinds of computer resources a user uses for account billing or for accumulating usage statistics. Protection – ensuring that all access to system resources is controlled. ...
... users or multiple jobs running at the same time. Accounting – keeping track of and recording how much and what kinds of computer resources a user uses for account billing or for accumulating usage statistics. Protection – ensuring that all access to system resources is controlled. ...
Operating Systems
... It provides security by supporting access control and ownership privileges, meaning you can set permission for groups or individual users to access certain files. NTFS supports compression of individual files and folders which can be read and written to while they are ...
... It provides security by supporting access control and ownership privileges, meaning you can set permission for groups or individual users to access certain files. NTFS supports compression of individual files and folders which can be read and written to while they are ...
PPTX - Intel Software Academic Program
... APP_OPTIM - differentiate between debug and release versions ...
... APP_OPTIM - differentiate between debug and release versions ...
Operating- System Structures
... which operating system to boot into. This means that rather initially booting to an operating system, the boot manager will first run during system startup. It is this boot manager that is responsible for determining which system to boot into. Typically boot managers must be stored at ...
... which operating system to boot into. This means that rather initially booting to an operating system, the boot manager will first run during system startup. It is this boot manager that is responsible for determining which system to boot into. Typically boot managers must be stored at ...
Chapter 9
... • The process of assigning physical addresses to program variables is called binding. • Binding can occur at compile time, load time, or run time. • Compile time binding gives us absolute code. • Load time binding assigns physical addresses as the program is loaded into memory. – With load time, bin ...
... • The process of assigning physical addresses to program variables is called binding. • Binding can occur at compile time, load time, or run time. • Compile time binding gives us absolute code. • Load time binding assigns physical addresses as the program is loaded into memory. – With load time, bin ...
Chapter 8
... • The process of assigning physical addresses to program variables is called binding. • Binding can occur at compile time, load time, or run time. • Compile time binding gives us absolute code. • Load time binding assigns physical addresses as the program is loaded into memory. – With load time, bin ...
... • The process of assigning physical addresses to program variables is called binding. • Binding can occur at compile time, load time, or run time. • Compile time binding gives us absolute code. • Load time binding assigns physical addresses as the program is loaded into memory. – With load time, bin ...
Chapter 3: Operating
... UNIX is a multitasking system. When a user logs on to the system, the shell (command interpreter) of the user’s choice is run. The shell may continue while another program is executed. To start a new process, the shell executes a fork system call. Then the selected program is loaded into memory ...
... UNIX is a multitasking system. When a user logs on to the system, the shell (command interpreter) of the user’s choice is run. The shell may continue while another program is executed. To start a new process, the shell executes a fork system call. Then the selected program is loaded into memory ...
Powerpoint document
... codes. The compiler derives its name from the way it works, looking at the entire source code and collecting and reorganizing the instructions. Thus, a compiler differs from an interpreter, which analyzes and executes each line of source code successively, without analyzing the entire program. ...
... codes. The compiler derives its name from the way it works, looking at the entire source code and collecting and reorganizing the instructions. Thus, a compiler differs from an interpreter, which analyzes and executes each line of source code successively, without analyzing the entire program. ...
PythonFunc
... A powerful mechanism for identifying patterns in text But need to be handled with care An entirely new syntax is required ...
... A powerful mechanism for identifying patterns in text But need to be handled with care An entirely new syntax is required ...
1st Semester
... Program in C to find the sum and average of the given numbers using for loop, while loop, and do-while loop. Program in C to sum the series X1+X2+X3+X4+X5+……….+Xn. Program in C to construct pyramid of digits. Program in C to find average of n numbers using an array. Program in C to print the sum of ...
... Program in C to find the sum and average of the given numbers using for loop, while loop, and do-while loop. Program in C to sum the series X1+X2+X3+X4+X5+……….+Xn. Program in C to construct pyramid of digits. Program in C to find average of n numbers using an array. Program in C to print the sum of ...
PPT
... What guarantees (if any) are made to applications about the servicing of their requests or about the servicing of device interrupts? Real-time OSs ...
... What guarantees (if any) are made to applications about the servicing of their requests or about the servicing of device interrupts? Real-time OSs ...
Software Computer Systems Standard Grade Computing Studies
... impossible for humans to read and write. Assembly language has the same structure and set of commands as machine code, but it allows a programmer to use names instead of numbers. Each type of processor has its own machine code, so an assembly language program written for one type of processor won't ...
... impossible for humans to read and write. Assembly language has the same structure and set of commands as machine code, but it allows a programmer to use names instead of numbers. Each type of processor has its own machine code, so an assembly language program written for one type of processor won't ...
View File
... • The system call interface invokes intended system call in OS kernel and returns status of the system call and any return values • The caller need know nothing about how the system call is implemented – Just needs to obey API and understand what OS will do as a result call – Most details of OS inte ...
... • The system call interface invokes intended system call in OS kernel and returns status of the system call and any return values • The caller need know nothing about how the system call is implemented – Just needs to obey API and understand what OS will do as a result call – Most details of OS inte ...
Overview of OS/2
... executed. The range of virtual addresses available is called virtual address space, whereas the range of physical addresses available is called physical address space. Virtual memory systems have the characteristic of allowing a program or process to be independent of its actual position in physical ...
... executed. The range of virtual addresses available is called virtual address space, whereas the range of physical addresses available is called physical address space. Virtual memory systems have the characteristic of allowing a program or process to be independent of its actual position in physical ...
09CS212 OPERATING SYSTEM Credits: 3:0:0 Course Objective: To
... Course Objective: To gain knowledge about the Operating Systems concepts such as process, main management, secondary memory management, CPU and disk scheduling etc. ...
... Course Objective: To gain knowledge about the Operating Systems concepts such as process, main management, secondary memory management, CPU and disk scheduling etc. ...
Batching processing
... A timer circuit counts down the quantum and generates an interrupt at the end. Such process switch involves updating the snapshot of the current process, restoring the snapshot of the next process, and then starting its execution. A program, called interrupt handler, is run for scheduler to update t ...
... A timer circuit counts down the quantum and generates an interrupt at the end. Such process switch involves updating the snapshot of the current process, restoring the snapshot of the next process, and then starting its execution. A program, called interrupt handler, is run for scheduler to update t ...
Tutorail-two-with
... kept only where it is needed and is accessible only within a defined and restricted area, so any bugs affecting that data must be limited to a specific module or layer. ...
... kept only where it is needed and is accessible only within a defined and restricted area, so any bugs affecting that data must be limited to a specific module or layer. ...
Operating Systems
... user no longer has direct access to processor job is submitted to computer operator who batches them together and places them on an input device program branches back to the monitor when finished ...
... user no longer has direct access to processor job is submitted to computer operator who batches them together and places them on an input device program branches back to the monitor when finished ...
Document
... -Ctrl-q – it continues displaying on the screen (stopped with Ctrl-s) -Ctrl-c – it stops the current activity and it is used to stop processes and displays on the screen. -Ctrl-d – means the end of file or exit, used to get out of some Unix utilities, exit from a terminal window or for logout. -Ctrl ...
... -Ctrl-q – it continues displaying on the screen (stopped with Ctrl-s) -Ctrl-c – it stops the current activity and it is used to stop processes and displays on the screen. -Ctrl-d – means the end of file or exit, used to get out of some Unix utilities, exit from a terminal window or for logout. -Ctrl ...
資工系網媒所NEWS實驗室Chapter 2
... in OS kernel and returns status of the system call and any return values The caller need know nothing about how the system call is implemented Just needs to obey API and understand what OS will do as a result call Most details of OS interface hidden from programmer by API Managed by run-time support ...
... in OS kernel and returns status of the system call and any return values The caller need know nothing about how the system call is implemented Just needs to obey API and understand what OS will do as a result call Most details of OS interface hidden from programmer by API Managed by run-time support ...
Chapter 2: Operating-System Structures
... Often, more information is required than the identity of the desired system call – Exact type and amount of information vary according to OS and call Three general methods used to pass parameters to the OS – 1) Simplest: pass the parameters in registers • In some cases, may be more parameters than r ...
... Often, more information is required than the identity of the desired system call – Exact type and amount of information vary according to OS and call Three general methods used to pass parameters to the OS – 1) Simplest: pass the parameters in registers • In some cases, may be more parameters than r ...
OS API
... virtually all versions of UNIX, Linux, and Mac OS X), and Java API for the Java virtual machine (JVM) ...
... virtually all versions of UNIX, Linux, and Mac OS X), and Java API for the Java virtual machine (JVM) ...
Library (computing)
In computer science, a library is a collection of non-volatile resources used by computer programs, often to develop software. These may include configuration data, documentation, help data, message templates, pre-written code and subroutines, classes, values or type specifications. In IBM's OS/360 and its successors they are referred to as partitioned data sets.In computer science, a library is a collection of implementations of behavior, written in terms of a language, that has a well-defined interface by which the behavior is invoked. This means that as long as a higher level program uses a library to make system calls, it does not need to be re-written to implement those system calls over and over again. In addition, the behavior is provided for reuse by multiple independent programs. A program invokes the library-provided behavior via a mechanism of the language. For example, in a simple imperative language such as C, the behavior in a library is invoked by using C's normal function-call. What distinguishes the call as being to a library, versus being to another function in the same program, is the way that the code is organized in the system. Library code is organized in such a way that it can be used by multiple programs that have no connection to each other, while code that is part of a program is organized to only be used within that one program. This distinction can gain a hierarchical notion when a program grows large, such as a multi-million-line program. In that case, there may be internal libraries that are reused by independent sub-portions of the large program. The distinguishing feature is that a library is organized for the purposes of being reused by independent programs or sub-programs, and the user only needs to know the interface, and not the internal details of the library.The value of a library is the reuse of the behavior. When a program invokes a library, it gains the behavior implemented inside that library without having to implement that behavior itself. Libraries encourage the sharing of code in a modular fashion, and ease the distribution of the code. The behavior implemented by a library can be connected to the invoking program at different program lifecycle phases. If the code of the library is accessed during the build of the invoking program, then the library is called a static library. An alternative is to build the executable of the invoking program and distribute that, independently from the library implementation. The library behavior is connected after the executable has been invoked to be executed, either as part of the process of starting the execution, or in the middle of execution. In this case the library is called a dynamic library. A dynamic library can be loaded and linked as part of preparing a program for execution, by the linker. Alternatively, in the middle of execution, an application may explicitly request that a module be loaded.Most compiled languages have a standard library although programmers can also create their own custom libraries. Most modern software systems provide libraries that implement the majority of system services. Such libraries have commoditized the services which a modern application requires. As such, most code used by modern applications is provided in these system libraries.