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Information and Communications
Technology Qualifications
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| Prescription: PR740 (PR340)Programming (UNIX) |
| Aim of Module | To use the facilities provided by the Unix operating system to introduce the students to the principles and problems of software development.
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| Credits | 14
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| Knowledge Assumed From | OS610(OS210) Operating systems (Internals)
PR62n(PR22n) Programming (Further techniques)
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| Student Learning hours | 140
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| Content Revised | pre 1996
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| Prescription Expiry Date | Nov 2005
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The Student Will
| | | | A | | Use the facilities provided for software development under the Unix operating system. | | | | | 1.1 | Files and Directories | | | | | 1.2 | Editors | | | | | 1.3 | Shell commands | | | | | 1.4 | Macros and shell programming. | | |
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| | | | C | | Describe the general problems of applications that involve multiple communicating programs, and their solutions. | | | | | > | Distinguish between these solutions explaining their inherent advantages and disadvantages and typical applications. | | | | | 2.1 | Problems that require these solutions. | | | | | 2.2 | Process spawning (fork). | | | | | 2.3 | Alternate process execution or chaining. | | | | | 2.4 | Interprocess communications | | | | - message queues | | | | - shared memory communications | | |
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| | | | C | | Building on the above solutions describe the problems and their solutions for applications that lead to multiple programs accessing the same data from a file or memory. Reference should be made to single processor and multiple processor environments. | | | | | 3.1 | Problems that require these solutions | | | | | 3.2 | File locking | | | | | 3.3 | Collision detection | | | | | 3.4 | Mutual exclusion and critical regions | | | | | 3.5 | Deadlock | | | | | 3.6 | Event handling - signals and semaphores | | | | | 3.7 | Review of features (extensions) provided by this and other languages (e.g. Ada, Modula-2) which make special provision for concurrency problems. | | |
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| | | | A | | Use the theory studied from the previous topics to develop application programs which implement the theory to solve typical application problems. | | | | | > | Sample applications include: | | | | | | - A file and record locking system for an application | | | | - Online multi-user applications (e.g. enrolment, banking, reservations) which have multiple processes updating a database in a transaction processing environment (via a single control program). | | | | - Watchdog timers which interrupt a process when a certain operation or event occurs. | | |
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