Introduction to Programming in Operating System | CMPSC 473, Study notes of Computer Science

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About Me

• Trent Jaeger (PhD, University of Michigan)
• Associate Professor, CSE -- after 9 years at IBM Research
• Research: Operating System Security
• Example Projects
  • L4 Microkernel -- minimal, high performance OS
  • Linux -- Open source, UNIX variant
  • Xen hypervisor -- Open source, virtual machine platform
• Office Hours: Tu 4-5, W 1-2, or by appointment
• Office: 346A IST Bldg
• Email: [email protected]

Preliminaries

Course Requirements

• CMPSC 311

• Intro to Systems Programming
  • C programming
  • Programming support tools
  • Common system functions
• CMPSC 331
• Computer Organization
• Major components of a computer system
• How a program is executed
• ‘C’ or better grade in both

Course Mailing List

• Via ANGEL
  • Use with care
• I will send a test email
  • Please reply if you do not receive by Fr
  • May need to forward to your CSE account
• Can use to email me or the TA
  • Please use “473” in the subject

Grading

• Midterms (2): 30%

• Projects (4): 35%

• Final Exam: 25%

• Quizzes and Participation (?): 10%

Late Policy

• Strict Deadline!

• Due at beginning of class (1pm)

• For projects: Loss @ 20% per day

• Inform TA in advance for late project

submission

• Inform TA of exam conflicts

Projects

• 70-85% grade on how functional your project is
• The other 15-30% on your write-up
  • We will give instructions on what we expect when we make the projects available
• Computing Environment
  • Test in Linux
  • Email me or the TA if you don’t have an account or have any doubts/problems

Background

• First course on algorithms and data structures
• Comfortable programming in C
  • Comfortable with a UNIX debugger like gdb
• Preliminary understanding of computer architecture
• We will cover some basics in this course
  • Talk to me if you have doubts

Before We Begin…

Some Advice

• Speak up in class, ask questions
• Attend all classes
  • Slides are only an outline
• Bring printouts to class and take notes on them
• Read text-book soon after class
  • Sections to read will be made available on the Web site alongside lecture notes
  • Even better: read before class and ask questions

Operating System Views

• User view

• How do you view an OS?

• System view

• Manage the resources
• For the processes

Computer System

Operating System History

• 1950s : Simplify operators’ job

• 1960s : Structure, concepts, everything

• 1970s : Small and flexible (UNIX)

• 1980s : Individual user systems (PCs)

• 1990s : Internet, Windows

• 2000s : Security

Operating Systems

1950s

• Primitive systems
  • Little memory, programs stored on tape
• Single user
  • Batch processing
  • Computer executes one function at a time
• No overlap of I/O and computation