operating system on java

The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System

The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System

... operating system is once again gaining acceptance this time as the solution to the unconstrained growth of UNIX. During the last 20 years operating systems and their environments have undergone ... example, on the HyperCube, remote communication times are measured in the hundreds of microseconds versus five microseconds for a Butterfly and considerably less than one microsecond (on average) ... context switching and scheduling. One of the goals of Mach is to provide an extensible kernel basis upon which operating system environments such as UNIX can be built. Emulation of UNIX-like system...

Ngày tải lên: 12/09/2012, 15:05

23 1.3K 1
Tổng quan về Operating System

Tổng quan về Operating System

... tiểu trình, trong hệ thống có thể tồn tại nhiều dòng xử lý cùng chia sẻ một không gian địa chỉ bộ nhớ, các dòng xử lý này hoạt động song song với nhau. -1.3- Chapter 1: Introduction 1.18 Lịch ... sử dụng mô hình đa tiểu trình, trong một tiến trình có thể có nhiều tiểu trình. Tiểu trình cũng là đơn vị xử lý cơ bản trong hệ thống – Các tiểu trình trong một tiến trình chia sẻ một không ... triển mới của OS trong việc điều khiển các hệ thống đa người dùng. Chia sẻ thời gian ở đây chính là chia sẻ thời gian xử lý của processor cho các tác vụ, các tiến trình đang ở trong trạng thái...

Ngày tải lên: 18/03/2013, 16:48

62 499 3
Operating system

Operating system

... is the function of the operating system? The function of operating system is to control a computer, manage the function of the computer, and provide multimedias to check operations of that ... that computer A. Divide some common nouns in computing into countable and uncountable nouns Language work 2. Robotics 4. Program 5. Hacker 9. Workstation 1. Window 3. Hardware 6. Hacking 8. ... nouns B. These sentences contain typical errors. Correct them Language work 1. We are having terrivel weather 2. Can you give me some advice? 3. I need some information 4. The news was very depressing 5....

Ngày tải lên: 03/08/2013, 01:26

7 419 0
Programming the Be Operating System-Chapter 9: Messages and Threads

Programming the Be Operating System-Chapter 9: Messages and Threads

... Application Server delivers system messages to an application. Addition- ally, an application can send application-defined messages to itself (the pur- pose being to pass information from one object ... *FirstItem() const; void *LastItem() const; void *Items() const; bool HasItem(void *item) const; int32 IndexOf(void *item) const; int32 CountItems() const; bool IsEmpty() const; } The ... the system messages. In short, system messages fall into the following categories: Application system messages Such a message concerns the application itself, and is delivered to the BApplication...

Ngày tải lên: 17/10/2013, 19:15

37 542 0
PHẦN 2: HỆ ĐIỀU HÀNH (OPERATING SYSTEM)

PHẦN 2: HỆ ĐIỀU HÀNH (OPERATING SYSTEM)

... Partition Active Nạp Boot sector Partition Active Partition Entry Table 1 1BE Mỗi Partition Entry Table dài 16 Byte. Chứa các thông tin về partition Partition Entry Table 2 1CE Partition ... quản lý xuất nhập (I/O operations). 4. Quản lý hệ thống File (File -system manipulation). 5. Truyền tin (Communications). 6. Xác định và xử lý lỗi (Error detection). 7. Các dịch vụ hệ thống ... thống tập tin (File System) . 4. Quản lý nhập xuất (I/O). 5. Quản lý thiết bị lưu trữ (Secondary-storage). 6. Quản lý mạng (Networking). 7. Hệ thống bảo vệ (Protection System) . 8. Hệ thông...

Ngày tải lên: 19/10/2013, 18:15

27 851 17
Programming the Be Operating System-Chapter 10: Files

Programming the Be Operating System-Chapter 10: Files

... I’ll mod- ify the previous section’s version of the application-defined Save() function so that saving the file is done with a reliance on the Storage Kit rather than on POSIX: 359 Chapter 10 In ... you follow normal conventions, the files shown are the contents of the current working directory. When a panel is displayed, control is in the hands of the user. Once the user confirms a choice ... selection in the Open file panel, a click on the Save button in the Save file panel, or a click on the Can- cel button in either type of panel), a message is automatically sent by the system to...

Ngày tải lên: 20/10/2013, 10:15

18 406 1
Operating System Structures Cấu trúc Hệ điều hành

Operating System Structures Cấu trúc Hệ điều hành

... microkernel approach to system design? Lợi ích chính của phương pháp microkernel (vi nhân) là gì? 2.12 Why do some systems store the operating system in firmware, and others on disk? Tại sao một ... vụ đó. Mở rộng thêm trong trường hợp nào thì không thể cung cấp những dịch vụ đó cho chương trình cấp người dùng. 2.10 What is the purpose of system calls? Mục đích của system call là gì? 2.11 ... dụng phương pháp phân tầng là gì? 2.9 List five services provided by an operating system. Explain how each provides convenience to the users. Explain also in which cases it would be impossible...

Ngày tải lên: 28/10/2013, 09:15

2 913 4
Tài liệu Microsoft® Windows® 2000 Network and Operating System Essentials ppt

Tài liệu Microsoft® Windows® 2000 Network and Operating System Essentials ppt

... network operating system. Just as a computer cannot operate without an operating system, a network of computers cannot operate without a network operating system. Every network operating system ... permission of Microsoft Corporation. If, however, your only means of access is electronic, permission to print one copy is hereby granted. Microsoft may have patents, patent applications, trademarks, ... management The operating system allocates memory to each application, without affecting the memory used by other applications. „# Data management The operating system manages files stored on hard...

Ngày tải lên: 09/12/2013, 17:15

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Tài liệu A+operating system technologies doc

Tài liệu A+operating system technologies doc

... www.testking.com - 18 - QUESTION NO 43 How can you get a point out of the system configuration on a Windows 9x operating system? A. From the system monitor, click the print button. B. From the device ... resources on the local network. QUESTION NO: 133 How do you connect to newsgroups when using an ISP to connect to internet? A. Connect to the INTERNIC for an connection information. B. ... NETSTAT. C. IPCONFIG. D. NBTSTAT. Answer: C The command line utility IPCONFIG is used on Windows NT/2000/XP system to retrieve and configure the IP configuration. QUESTION NO 66 Which...

Ngày tải lên: 11/12/2013, 14:15

107 448 1
Tài liệu CompTIA A+ Operating System Technologies docx

Tài liệu CompTIA A+ Operating System Technologies docx

... dissimilar in structure. Control Panel Control Panel is the main configuration tool for managing the user environment and the system environment (system settings). One machine may store separate ... Cramsession : CompTIA A+ Operating System Technologies TM â 2000 All Rights Reserved BrainBuzz.com 1 Contents: Contents: 1 What is an OS? 5 Functions 5 Components 5 Command ... Gather information and ask questions ã Be prepared ã Be calm ã Take your time ã Concentrate ã Be flexible (Dont assume anything) Cramsession : CompTIA A+ Operating System Technologies...

Ngày tải lên: 11/12/2013, 15:15

93 925 3
Tài liệu THE OPERATING SYSTEM MACHINE LEVEL-6 docx

Tài liệu THE OPERATING SYSTEM MACHINE LEVEL-6 docx

... variable  pthreadcondwait Wait on a condition variable  pthreadcondsignal Release one thread waiting on a condition variable                                                       Figure ... (MMU hardware) Context Valid Physical page Virtual page tag Flags (b) (c) Format is entirely defined by the operating system Translation table (Operating system) TSB (MMU + sofware) Context Entry ... mutex  pthreadcondinit Create a condition variable  pthreadconddestroy Destroy a condition variable  pthreadcondwait...

Ngày tải lên: 12/12/2013, 09:15

45 526 0
Tài liệu Activity 9.1: Identify Operating System Requirements pdf

Tài liệu Activity 9.1: Identify Operating System Requirements pdf

... INTENTIONALLY LEFT BLANK Activity 9.1: Identify Operating System Requirements In this activity, you will first identify the optimal operating system to use in a given situation. Next, ... you will analyze the operating system selection in a scenario. Objectives After completing this activity, you will be able to: ! Identify the appropriate operating system for a given set ... 10 minute discussion. Activity 9.1: Identify Operating System Requirements 63 Exercise 2: Analyzing Technology Selection (5 minutes) ! Analyze technology selection 1. Participate...

Ngày tải lên: 21/12/2013, 06:16

4 393 0
Tài liệu Chapter 2: Software & Operating System ATHENA doc

Tài liệu Chapter 2: Software & Operating System ATHENA doc

... UNIX ~ The operating system also interacts with the next functional layer called application software. ATHENA What does an operating system do? Example: ATHENA Personal Computer Operating Systems ~ ... an operating system ? ~ What does an operating system do? ATHENA Personal Computer Operating Systems ~ Microsoft Windows is the most popular, and is installed on over 80% of the world’s personal computers ~ ... ~ operating system Overview ~ What does an operating system do? ATHENA How is software categorized? ~ Software is categorized as either application software or system software. ~ Application...

Ngày tải lên: 20/01/2014, 22:20

11 367 0
Tài liệu Lab 6.2.7a Managing Switch Operating System Files pptx

Tài liệu Lab 6.2.7a Managing Switch Operating System Files pptx

... An example of the Firmware Configuration Menu is: Catalyst 1900 - Firmware Configuration System Information FLASH: 1024K bytes V8.01.00 : Enterprise Edition Upgrade status: No upgrade ... for the operating instructions for the TFTP server used in place of the Cisco TFTP server. b. Once the TFTP server is running and shows the proper address configured on the workstation, proceed ... 6.2.7a Copyright  2003, Cisco Systems, Inc. Lab 6.2.7a Managing Switch Operating System Files Objective ã Create and verify a basic switch configuration. ã Backup the switch IOS to...

Ngày tải lên: 24/01/2014, 19:20

6 301 0
Tài liệu Programming the Be Operating System-Chapter 1: BeOS Programming Overview ppt

Tài liệu Programming the Be Operating System-Chapter 1: BeOS Programming Overview ppt

... Invoking the BApplication constructor is necessary for a few reasons. The BApplication constructor: ã Connects the application to the Application Server ã Provides the application with a unique identifying ... application object The connecting of an application to the Application Server has already been men- tioned. This connection allows the server to send messages to the application. The application signature ... Kit Application Kit BHandler BView BTextControl BColorControl BCheckBox BRadioButton BPictureButton BButton BControl Software Kits and Their Classes 7 Software Kits and Their Classes The application programming...

Ngày tải lên: 26/01/2014, 07:20

30 461 0
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