REF Chapter 3: Windows NT System Specifics
... physical file on the operating system with some other name that is resolved at run time. To accomplish this, Windows environment variables are enclosed by percent (%) signs. For more information, see BASIS Reference, “Environment Variables.” Environment variables and the names they represent can be ...
... physical file on the operating system with some other name that is resolved at run time. To accomplish this, Windows environment variables are enclosed by percent (%) signs. For more information, see BASIS Reference, “Environment Variables.” Environment variables and the names they represent can be ...
UNIX---Operating System
... device is associated with a special file. – Named file system: named pipes. A pipe is a circular buffer allowing two processes to communicate on the producer-consumer model. ...
... device is associated with a special file. – Named file system: named pipes. A pipe is a circular buffer allowing two processes to communicate on the producer-consumer model. ...
Delimited continuations in operating systems
... as a snapshot of the data before the update. If tree1 is not used further in the computation, the system will reclaim the storage space it occupies. To use tree1 further, on the other hand, is to “undo” the update. The nondestructive update takes little more memory than a destructive update would, b ...
... as a snapshot of the data before the update. If tree1 is not used further in the computation, the system will reclaim the storage space it occupies. To use tree1 further, on the other hand, is to “undo” the update. The nondestructive update takes little more memory than a destructive update would, b ...
EN_C2_Eng - BCS Koolitus
... The operating system can also be seen as a resources5 manager. Let us imagine what may happen if several programs use the same device (say a printer) at the same time. The result could be chaotic as the prints of the programs may overlap. From this point of view the operating system acts as a refere ...
... The operating system can also be seen as a resources5 manager. Let us imagine what may happen if several programs use the same device (say a printer) at the same time. The result could be chaotic as the prints of the programs may overlap. From this point of view the operating system acts as a refere ...
Microkernels
... (Slides include materials from Modern Operating Systems, 3rd ed., by Andrew Tanenbaum and from Operating System Concepts, 7th ed., by Silbershatz, Galvin, & Gagne) ...
... (Slides include materials from Modern Operating Systems, 3rd ed., by Andrew Tanenbaum and from Operating System Concepts, 7th ed., by Silbershatz, Galvin, & Gagne) ...
Introduction to Programming Methodology Notes
... The popularity of any programming language depends upon the useful features that it provides to its users. A large number of programming languages are in existence around the world but not all of them are popular. The following are some of the important characteristics of a good programming language ...
... The popularity of any programming language depends upon the useful features that it provides to its users. A large number of programming languages are in existence around the world but not all of them are popular. The following are some of the important characteristics of a good programming language ...
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Kapitel8[1]
... • A client application can call a procedure (function) in a server application running on another computer as it were locally implemented • Handle over parameters, receiving results in an appropiate format (integer, string, float,..) • eXternal Data Representation ...
... • A client application can call a procedure (function) in a server application running on another computer as it were locally implemented • Handle over parameters, receiving results in an appropiate format (integer, string, float,..) • eXternal Data Representation ...
ch3
... between a running program and the operating system: Pass parameters in registers Store the parameters in a table in memory, and the table address is passed as a parameter in a register III. Push (store) the parameters onto the stack by the program, and pop off the stack by operating system ...
... between a running program and the operating system: Pass parameters in registers Store the parameters in a table in memory, and the table address is passed as a parameter in a register III. Push (store) the parameters onto the stack by the program, and pop off the stack by operating system ...
Chapter 1
... Figure 1-14. A file system for a university department. Tanenbaum, Modern Operating Systems 3 e, (c) 2008 Prentice-Hall, Inc. All rights reserved. 0-13-6006639 ...
... Figure 1-14. A file system for a university department. Tanenbaum, Modern Operating Systems 3 e, (c) 2008 Prentice-Hall, Inc. All rights reserved. 0-13-6006639 ...
Assignment0: Linux Basics and /proc
... and reports them as ASCII strings. Some of these routines read the kernel tables only when the pseudo file is opened, whereas others read the tables each time that the file read. Thus file input might behave differently than you expect, since they are not really operating on files at all. The /proc ...
... and reports them as ASCII strings. Some of these routines read the kernel tables only when the pseudo file is opened, whereas others read the tables each time that the file read. Thus file input might behave differently than you expect, since they are not really operating on files at all. The /proc ...
Operating Systems
... • Clock time – the amount of time a process takes to run. This depends on the number of other processes being run on the system. Whenever you report the clock time, the measurements should be made with no other activities on the system. • User CPU time – attributed to user instructions. • System CPU ...
... • Clock time – the amount of time a process takes to run. This depends on the number of other processes being run on the system. Whenever you report the clock time, the measurements should be made with no other activities on the system. • User CPU time – attributed to user instructions. • System CPU ...
Ch1 Introduction to the Linux Kernel
... The software that provides basic services for all other parts of the system, manages hardware, and distributes system resources Sometimes referred to as the supervisor, core, or internals of the operating system. ...
... The software that provides basic services for all other parts of the system, manages hardware, and distributes system resources Sometimes referred to as the supervisor, core, or internals of the operating system. ...
2-Operating-System Structures
... System-call interface maintains a table indexed according to these numbers ...
... System-call interface maintains a table indexed according to these numbers ...
Unix – Small Beginnings
... Like in the Multics project, Ken Thompson wanted his operating system to be written in a high level language so it would be easy to build, easy for others to understand, and easy to port to other platforms. FORTRAN was the technical language of the day, so that was the target for Thompson to transli ...
... Like in the Multics project, Ken Thompson wanted his operating system to be written in a high level language so it would be easy to build, easy for others to understand, and easy to port to other platforms. FORTRAN was the technical language of the day, so that was the target for Thompson to transli ...
Chapter 4
... Chapter 4 focuses on computer files, including what they are and how you can organize and protect them. ...
... Chapter 4 focuses on computer files, including what they are and how you can organize and protect them. ...
Figure 11.01 - 醫學資訊系 鄭仁亮教授
... Client and user-on-client identification is insecure or complicated NFS is standard UNIX client-server file sharing protocol CIFS is standard Windows protocol Standard operating system file calls are translated into remote calls ...
... Client and user-on-client identification is insecure or complicated NFS is standard UNIX client-server file sharing protocol CIFS is standard Windows protocol Standard operating system file calls are translated into remote calls ...
ch11
... Client and user-on-client identification is insecure or complicated NFS is standard UNIX client-server file sharing protocol CIFS is standard Windows protocol Standard operating system file calls are translated into remote calls ...
... Client and user-on-client identification is insecure or complicated NFS is standard UNIX client-server file sharing protocol CIFS is standard Windows protocol Standard operating system file calls are translated into remote calls ...
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[PDF]
... systems has encouraged the use of automated software tools [10, 11, 12, 13] that facilitate the development process from analysis through coding. There are two major approaches used for object-oriented model based code generation, namely structural and behavioral. The structural approach is based on ...
... systems has encouraged the use of automated software tools [10, 11, 12, 13] that facilitate the development process from analysis through coding. There are two major approaches used for object-oriented model based code generation, namely structural and behavioral. The structural approach is based on ...
1basicsOLD - NEMCC Math/Science Division
... // Use the quadratic formula to compute the roots. // Assumes a positive discriminant. double discriminant = Math.pow(b, 2) - (4 * a * c); double root1 = ((-1 * b) + Math.sqrt(discriminant)) / (2 * a); double root2 = ((-1 * b) - Math.sqrt(discriminant)) / (2 * a); System.out.println ("Root #1: " + r ...
... // Use the quadratic formula to compute the roots. // Assumes a positive discriminant. double discriminant = Math.pow(b, 2) - (4 * a * c); double root1 = ((-1 * b) + Math.sqrt(discriminant)) / (2 * a); double root2 = ((-1 * b) - Math.sqrt(discriminant)) / (2 * a); System.out.println ("Root #1: " + r ...
Operating System (OS)
... Device management—read, write, reposition device Information maintenance—get time or date Communications—send ...
... Device management—read, write, reposition device Information maintenance—get time or date Communications—send ...
- Mitra.ac.in
... • The other is designed for real-time tasks, where absolute priorities are more important than fairness. ...
... • The other is designed for real-time tasks, where absolute priorities are more important than fairness. ...
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.