chapter 20  operating system integration with air

... Operating -System Structures ■ System Components ■ Operating System Services ■ System Calls ■ System Programs ■ System Structure ■ Virtual Machines ■ System Design and Implementation ■ System Generation ... users’ view of the operation system is defined by system programs, not the actual system calls Operating System Concepts 3.20 Silberschatz, Galvin and Gagne 2002 MS-DOS System Structure ■ MS-DOS ... enforcement Operating System Concepts 3.9 Silberschatz, Galvin and Gagne 2002 Command-Interpreter System ■ Many commands are given to the operating system by control statements which deal with: ✦ process

Ngày tải lên: 30/01/2020, 04:43

... that allow the system to communicate with an object, one object to communicate with another object, and even one application to communicate with another application Continuing with the analogy, ... clipboard without any intervention on the part of the user Application-Defined Messages Up to this point, you’ve dealt mostly with system messages—messages generated and dispatched by the system ... fills in the list object with an item for each currently running application with the matching signature To know what to next, you need at least a passing familiarity with the BList class, a class

Ngày tải lên: 17/10/2013, 19:15

... If you aren’t comfortable with Unix, you probably aren’t familiar with POSIX That’s okay, because the Storage Kit also defines classes (such as BFile) that let you work with files outside the realm ... data using Be classes to work with the file’s path and standard POSIX functions for performing the actual data writing Here I’ll dispense with the POSIX and go with the BFile class The last example, ... different purposes, and one part can be manipulated without affecting the other part For instance, a file’s entry (its pathname) can be altered without changing the file’s node (its contents, or

Ngày tải lên: 20/10/2013, 10:15

... Allows the operating system to create a sufficient number of kernel threads Solaris prior to version 9 Windows NT/2000 with the ThreadFiber package Operating System Concepts – 7th ... Operating System Concepts – 7th edition, Jan 23, 2005 4.14 Silberschatz, Galvin and Gagne ©2005 Two-level Model Operating System Concepts. .. parent task (process) Operating System ... and Gagne ©2005 Operating System Concepts – 7 th edition, Jan 23, 2005 Many Many - - to to - - One Model One Model 4.10 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th edition,

Ngày tải lên: 28/06/2014, 02:20

... swapping are found on many systems (i.e., UNIX, Linux, and Windows) System maintains a ready queue of ready-to-run processes which have memory images on disk Operating System Concepts – 7th ... System Concepts – 7th Edition, Feb 22, 2005 8.21 Silberschatz, Galvin and Gagne ©2005 Paging Hardware Operating System Concepts – 7th Edition, Feb 22,... dynamically Operating System ... Operating system needed to check if routine is in processes’ memory address Dynamic linking is particularly useful for libraries System also known as shared libraries Operating System

Ngày tải lên: 28/06/2014, 02:20

... Chapter 13: I/O Systems Chapter 13: I/O Systems 13.2 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 2, 2005 Chapter 13: I/O Systems Chapter 13: I/O Systems  I/O ... subsystem signals process when I/O completed Operating System Concepts – 7th Edition, Jan 2, 2005 13.19 Silberschatz, Galvin and Gagne ©2005 Two I/O Methods Synchronous Operating System ... Operating System Concepts – 7th Edition, Jan 2, 2005 13.28 Silberschatz, Galvin and Gagne ©2005 UNIX I/O Kernel Structure Operating System Concepts. .. of I/O Devices Operating System

Ngày tải lên: 28/06/2014, 02:20

... ©2005 Access Matrix with Copy Rights Operating System Concepts – 7th Edition, Apr 11, 2005 14.15 Silberschatz, Galvin and Gagne ©2005 Access Matrix With Owner Rights Operating System Concepts – ... is right to execute system call or use an option within a system call Can be assigned to processes Users assigned roles granting access to privileges and programs Operating System Concepts – 7th ... computer system Explain how protection domains combined with an access matrix are used to specify the resources a process may access Examine capability and language-based protection systems Operating

Ngày tải lên: 28/06/2014, 02:20

... ©2005 Operating System Concepts – 7 th Edition, Jan 10, 2005 The Security Problem The Security Problem  Security must consider external environment of the system, and protect the system resources ... buffers) 15.9 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 10, 2005 C Program with Buffer C Program with Buffer - - overflow Condition overflow Condition #include ... Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 10, 2005 Chapter 15: Security Chapter 15: Security  The Security Problem  Program Threats  System and Network Threats  Cryptography

Ngày tải lên: 28/06/2014, 02:20

... Time Systems Time Systems 19.2 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 1, 2005 Chapter 19: Real Chapter 19: Real - - Time Systems Time Systems  System ... deadline period.  An embedded system is a computing device that is part of a larger system (I.e. automobile, airliner.)  A safety-critical system is a real-time system with catastrophic results ... ©2005 Operating System Concepts – 7 th Edition, Jan 1, 2005 Overview of Real Overview of Real - - Time Systems Time Systems  A real-time system requires that results be produced within a specified

Ngày tải lên: 28/06/2014, 02:20

... Linux System Chapter 21: The Linux System 21.2 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Feb 6, 2005 Chapter 21: The Linux System Chapter 21: The Linux System ... Operating System Concepts – 7 th Edition, Feb 6, 2005 The Linux System The Linux System  Linux uses many tools developed as part of Berkeley’s BSD operating system, MIT’s X Window System, and ... Operating System Concepts – 7 th Edition, Feb 6, 2005 Design Principles Design Principles  Linux is a multiuser, multitasking system with a full set of UNIX- compatible tools  Its file system

Ngày tải lên: 28/06/2014, 02:20

... Operating -System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System ... used Operating System Concepts – 7th Edition, Jan 14, 2005 2.11 Silberschatz, Galvin and Gagne ©2005 System Call Implementation Typically, a number associated with each system call System- call interface ... system is defined by system programs, not the actual system calls Operating System Concepts – 7th Edition, Jan 14, 2005 2.20 Silberschatz, Galvin and Gagne ©2005 Solaris 10 dtrace Following System...

Ngày tải lên: 13/05/2014, 00:36

... Operating -System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System ... used Operating System Concepts – 7th Edition, Jan 14, 2005 2.11 Silberschatz, Galvin and Gagne ©2005 System Call Implementation Typically, a number associated with each system call System- call interface ... system is defined by system programs, not the actual system calls Operating System Concepts – 7th Edition, Jan 14, 2005 2.20 Silberschatz, Galvin and Gagne ©2005 Solaris 10 dtrace Following System...

Ngày tải lên: 28/06/2014, 02:20

... up the count Space-Time Trade-offs (3) (a) Part of an uncompressed image with 24 bits per pixel (b) Same part compressed with GIF, bits per pixel (c) The color palate Caching Part of an i-node ... Paradigms (2) Event-driven code Implementation Layer One possible design for a modern layered operating system Naming Directories are used to map external names onto internal names Static Versus Dynamic ... design progresses in stages The Role of Experience (2) • Alternative design produces a working system – that does nothing starting on day 1 ...

Ngày tải lên: 18/10/2014, 15:30

... Chapter 2: Operating -System Structures ■ Operating System Services ■ User Operating System Interface ■ System Calls ■ Types of System Calls ■ System Programs ■ Operating System Design and Implementation ... Design and Implementation ■ Operating System Structure ■ Virtual Machines ■ Operating System Debugging ■ Operating System Generation ■ System Boot Operating System Concepts – th Edition 2.2 Silberschatz, ... being used Operating System Concepts – th Edition 2.14 Silberschatz, Galvin and Gagne ©2009 System Call Implementation ■ Typically, a number associated with each system call ● ■ System- call interface...

Ngày tải lên: 03/12/2015, 17:14

... slow connections (56 Kbps) Operating System Concepts – 7th Edition, Jan 2, 2005 20.9 Silberschatz, Galvin and Gagne ©2005 Operating Systems Issues The operating system must guarantee the specific ... Scheduling (3) File systems (4) Network protocols Operating System Concepts – 7th Edition, Jan 2, 2005 20.11 Silberschatz, Galvin and Gagne ©2005 Requirement of Multimedia Operating Systems There are ... connection with the client Operating System Concepts – 7th Edition, Jan 2, 2005 20.21 Silberschatz, Galvin and Gagne ©2005 Figure 20.1 Streaming media from a conventional web server Operating System...

Ngày tải lên: 28/06/2014, 02:20

... Operating systems, utilities, and drivers ATHENA Operating System Overview: What is an operating system ? An operating system (OS) is the master controller for all of the activities that take place within ... Operating System) was developed by Microsoft ATHENA Personal Computer Operating Systems Different operating systems are needed for different computing tasks: • Single-user operating system – Ex: ... ATHENA Personal Computer Operating Systems Windows, Mac OS, Linux, Unix, and DOS What’s the best-selling operating system? ATHENA Personal Computer Operating Systems Microsoft Windows is the most...

Ngày tải lên: 20/01/2014, 22:20

... coupled with the system s ability to assign threads to processors based on the current load on each processor, makes for a system with very high performance Preemptive Multitasking An operating system ... for an operating system to employ preemptive multitasking In a preemptive multitasking environment the operating system can, and does, preempt currently running applications With preemptive multitasking, ... aborted program Worse still, it could result in the entire system crashing 4 Chapter 1: BeOS Programming Overview An operating system with protected memory gives each running program its own memory...

Ngày tải lên: 26/01/2014, 07:20

... holds the header files that provide the BeIDE compiler with an interface to the software kits Within the headers folder is a folder named be Within that folder you’ll find one folder for each software ... BeOS, so this library is a part of the Be operating system rather than a file included with the BeIDE environment Library filenames will be prefaced with an indicator as to the project’s target platform ... with one another Because my intent here is to provide an overview of what a project consists of (as opposed to exploring the useful and exciting things that can be accomplished via the code within...

Ngày tải lên: 26/01/2014, 07:20

... you’ll work with in Chapter 6, Controls and Messages) include BCheckBox, BRadioButton, and BPictureButton 78 Chapter 3: BeOS API Overview Storage Kit All operating systems provide file system capabilities—without ... operating system The system is responsible for calling a hook function, while your application is responsible for defining the functionality of that function Overloaded operators Along with member ... the newer BeOS kits, and is incomplete as of this writing Working with the OpenGL classes requires some previous experience with OpenGL Game Kit Like the OpenGL Kit, the Game Kit is incomplete...

Ngày tải lên: 26/01/2014, 07:20

... Coordinate System In order to specify where a window is to be placed on the screen and where a view is to be placed within a window, a coordinate system is required Global coordinate system To ... location within the content area of the window This is possible because a window has its own Views 123 coordinate system one that’s independent of the global screen coordinate system The type of system ... onscreen, or where a view is within a window—the drawing will take place using the view’s own coordinate system Like the global and window coordinate systems, the view coordinate system is one of floating...

Ngày tải lên: 26/01/2014, 07:20