introduction to cvs and nachos
play

Introduction to CVS and NACHOS CSE 120 UCSD 17 January 2007 CSE - PowerPoint PPT Presentation

Oct 26, 2022 •469 likes •650 views

Introduction to CVS and NACHOS CSE 120 UCSD 17 January 2007 CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 1 / 10 CVS Basics CVS = Concurrent Versions System Designed to: Keep a history of changes made to your

  1. Introduction to CVS and NACHOS CSE 120 UCSD 17 January 2007 CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 1 / 10

  2. CVS Basics CVS = “Concurrent Versions System” Designed to: ◮ Keep a history of changes made to your source code ◮ make it easy to go back if you break something ◮ Allow multiple people to collaboratively work on the same code ◮ each person gets a private copy ◮ automates merging changes made by other people, so changes are not lost CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 2 / 10

  3. CVS Organization Repository Working Directory Working Directory Repository: Stores entire history of all files, in compressed form (one per project) Working Directory: Where you make develop and make changes (one per person) CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 3 / 10

  4. CVS Commands export CVSROOT=/path/to/repository Repository CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 4 / 10

  5. CVS Commands export CVSROOT=/path/to/repository ◮ cvs checkout nachos Repository Working Directory CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 4 / 10

  6. CVS Commands export CVSROOT=/path/to/repository ◮ cvs checkout nachos ◮ cvs checkout nachos Repository Working Directory Working Directory CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 4 / 10

  7. CVS Commands export CVSROOT=/path/to/repository ◮ cvs checkout nachos ◮ cvs checkout nachos ◮ edit files ◮ cvs add , cvs remove Repository Working Directory Working Directory CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 4 / 10

  8. CVS Commands export CVSROOT=/path/to/repository ◮ cvs checkout nachos ◮ cvs checkout nachos ◮ edit files ◮ cvs add , cvs remove ◮ cvs commit Repository Working Directory Working Directory CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 4 / 10

  9. CVS Commands export CVSROOT=/path/to/repository ◮ cvs checkout nachos ◮ cvs checkout nachos ◮ edit files ◮ cvs update ◮ cvs add , cvs remove ◮ cvs commit Repository Working Directory Working Directory CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 4 / 10

  10. Conflicts in CVS Two people edit the same file. . . $ cvs update RCS file: /home/linux/ieng6/cs120w/cs120w1/cvstest/nachos/ code/threads/synch.h,vretrieving revision 1.1.1.1 retrieving revision 1.2 Merging differences between 1.1.1.1 and 1.2 into synch.h rcsmerge: warning: conflicts during merge cvs update: conflicts found in code/threads/synch.h C code/threads/synch.h CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 5 / 10

  11. Conflicts in CVS CVS tells you what changes were made, but up to you to sort it out: synch.h ... <<<<<<< synch.h // Your code ======= // Their code >>>>>>> 1.2 ... Fix the changes (and remove conflict markers!), then commit. CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 6 / 10

  12. Final Words on CVS Other useful commands: ◮ cvs import ◮ cvs diff ◮ cvs log ◮ cvs tag Lots of documentation available We’ll send out a few more details on using CVS for the projects. CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 7 / 10

  13. A Brief Tour of NACHOS For project 1, you’ll be asked to implement and work with thread synchronization ◮ No userspace yet, only kernel threads ◮ Everything runs in same address space CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 8 / 10

  14. A Brief Tour of NACHOS Modules in code/threads : list : linked list data structure with support for priorities main : NACHOS “boot” code and command-line processing scheduler : maintains queue of threads in “ready” state switch : context-switch code, if you’re curious synch : implements semaphores for synchronization synchlist : synchronized version of list system : sets up interrupts, timer, etc. thread : defines NACHOS kernel threads threadtest : code for testing your threading code utility : random assortment (such as ASSERT ) CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 9 / 10

  15. A Brief Tour of NACHOS Modules in code/threads : list : linked list data structure with support for priorities main : NACHOS “boot” code and command-line processing scheduler : maintains queue of threads in “ready” state switch : context-switch code, if you’re curious synch : implements semaphores for synchronization synchlist : synchronized version of list system : sets up interrupts, timer, etc. thread : defines NACHOS kernel threads threadtest : code for testing your threading code utility : random assortment (such as ASSERT ) CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 9 / 10

  16. A Brief Tour of NACHOS Modules in code/threads : list : linked list data structure with support for priorities main : NACHOS “boot” code and command-line processing scheduler : maintains queue of threads in “ready” state switch : context-switch code, if you’re curious synch : implements semaphores for synchronization synchlist : synchronized version of list system : sets up interrupts, timer, etc. thread : defines NACHOS kernel threads threadtest : code for testing your threading code utility : random assortment (such as ASSERT ) Also see: code/machine/interrupt , for how interrupts are enabled/disabled CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 9 / 10

  17. A Brief Tour of NACHOS Hints for reading the code: ◮ Read through the .h files to see what the interfaces are ◮ Look at the .cc files if you want to see the implementation ◮ The code is well-commented, not too large, so don’t be intimidated ◮ Don’t need to read through everything CSE 120 (UCSD) Introduction to CVS and NACHOS 17 January 2007 10 / 10

Recommend

1 A Nachos Filesystem A Nachos FilesystemOn Disk On Disk A Typical Unix File Tree A Typical

1 A Nachos Filesystem A Nachos FilesystemOn Disk On Disk A Typical Unix File Tree A Typical

Representing Files On Disk: Nachos Representing Files On Disk: Nachos An OpenFile represents a file in OpenFile(sector) active use, with a seek pointer and OpenFile Seek(offset) read/write primitives for arbitrary byte ranges. Read(char*

213 views • 5 slides
Nachos Instructional OS: Part 3B CS 170, Tao Yang Topics File system implementation.

Nachos Instructional OS: Part 3B CS 170, Tao Yang Topics File system implementation.

Nachos Instructional OS: Part 3B CS 170, Tao Yang Topics File system implementation. Assignment 3B for File system extension 5/26/2015 2 Nachos File System Nachos Kernel Read/write Linux Two versions: openFile objects

627 views • 23 slides
1 Directory &amp; File Structure code/filesys/ Holds implementation of both stub and

1 Directory &amp; File Structure code/filesys/ Holds implementation of both stub and

Nachos Tutorial Courtesy: University of Waterloo Outline Directory &amp; File Structure Threads &amp; Synchronization Unix vs. Kernel vs. User Programs MIPS Simulator &amp; Nachos Address Spaces &amp; Executables

228 views • 10 slides
Administrivia Administrivia Nachos guide and Lab #1 are on the web.

Administrivia Administrivia Nachos guide and Lab #1 are on the web.

Administrivia Administrivia Nachos guide and Lab #1 are on the web. http://www.cs.duke.edu/~chase/cps210 Form project teams of 2-3. Lab #1 due February 5. Synchronization problem set is up: due January 29. Synchronization

557 views • 34 slides
Lunch &amp; Learn: Municipal Finance 101 Welcome to Numbers &amp; Nachos! Presented by

Lunch &amp; Learn: Municipal Finance 101 Welcome to Numbers &amp; Nachos! Presented by

Lunch &amp; Learn: Municipal Finance 101 Welcome to Numbers &amp; Nachos! Presented by City of Bryan Fiscal Services Joe Hegwood Chief Financial Officer Will Smith Assistant

458 views • 44 slides
File Systems and NFS File Systems and NFS Representing Files On Disk: Nachos Representing Files

File Systems and NFS File Systems and NFS Representing Files On Disk: Nachos Representing Files

File Systems and NFS File Systems and NFS Representing Files On Disk: Nachos Representing Files On Disk: Nachos An OpenFile represents a file in OpenFile(sector) active use, with a seek pointer and OpenFile Seek(offset) read/write primitives

525 views • 26 slides
1 Example: A Nachos Thread Example: A Nachos Thread Example: Context Switch on MIPS Example:

1 Example: A Nachos Thread Example: A Nachos Thread Example: Context Switch on MIPS Example:

Threads Threads Threads and Concurrency Threads and Concurrency A thread is a schedulable stream of control. defined by CPU register values (PC, SP) suspend : save register values in memory resume : restore registers from memory Multiple

595 views • 24 slides
Nachos Instructional OS: Part 2 CS 170, Tao Yang, Fall 2015 Announcement and update Project

Nachos Instructional OS: Part 2 CS 170, Tao Yang, Fall 2015 Announcement and update Project

Nachos Instructional OS: Part 2 CS 170, Tao Yang, Fall 2015 Announcement and update Project 1 deadline was extended. Project 2 description was revised last weekend. Start now or you miss deadline There are bonus points to submit and

1.29k views • 83 slides
1 The Concept of Fork The Concept of Fork Example: Process Creation in Unix Example: Process

1 The Concept of Fork The Concept of Fork Example: Process Creation in Unix Example: Process

Nachos Exec/Exit/Join Example Nachos Exec/Exit/Join Example SpaceID pid = Exec(myprogram, 0); Create a new process running the Exec parent Exec child program myprogram. The Classical OS Model in Unix The Classical OS Model in Unix

779 views • 3 slides
1 Thread Context Switch Thread Context Switch Thread States and Transitions Thread States and

1 Thread Context Switch Thread Context Switch Thread States and Transitions Thread States and

Administrivia Administrivia Nachos guide and Lab #1 are on the web. Threads and Concurrency Threads and Concurrency http://www.cs.duke.edu/~chase/cps210 Form project teams of 2-3. Lab #1 due February 5. Synchronization

502 views • 6 slides
INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION

INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION

TRAINING COURSE ON SOCIAL PROTECTION &amp; FORMALIZATION TRINIDAD AND TOBAGO MARCH 15, 2017 INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION Design of the NIS Assistance from the

547 views • 23 slides
INTRODUCTION Introduction 2/42 INTRODUCTION Alternations I am giving bread to the

INTRODUCTION Introduction 2/42 INTRODUCTION Alternations I am giving bread to the

Patterns of variation in the expression of case and agreement Andrs Brny Leiden University Centre for Linguistics 9 November 2019, BaSIS Workshop a.barany@hum.leidenuniv.nl INTRODUCTION Introduction 2/42 INTRODUCTION

1.37k views • 42 slides
Introduction Introduction Introduction Introduction Outline Motivation Failures

Introduction Introduction Introduction Introduction Outline Motivation Failures

Introduction Introduction Introduction Introduction Outline Motivation Failures Definition and concepts Process and product properties Principles SE Approaches Motivation Software and the economy The economies of

1.03k views • 49 slides
Introduction Introduction Introduction Nationwide Cause for Concern 1

Introduction Introduction Introduction Nationwide Cause for Concern 1

Introduction Introduction Introduction Nationwide Cause for Concern 1 https://www.cdc.gov/std/stats17/infographic.htm Introduction Epidemiology in Western Colorado CPHE Surveillance Data Report, May 2018 Chlamydia Epidemiology in Western

977 views • 39 slides
DAQ introduction Purpose of this talk : (1) Introduction for those who have not been in every

DAQ introduction Purpose of this talk : (1) Introduction for those who have not been in every

DAQ introduction Purpose of this talk : (1) Introduction for those who have not been in every meeting (2) Some ideas of diagrams for section 7.1 (Introduction) of TP. Giles Barr 25 Jan 2018, Pembroke College On DUNE, the reality is there is a

474 views • 10 slides
INTRODUCTION cf. Schneider, Chapter 1 INTRODUCTION THEY ARE OUT TO GET YOU INTRODUCTION WHAT

INTRODUCTION cf. Schneider, Chapter 1 INTRODUCTION THEY ARE OUT TO GET YOU INTRODUCTION WHAT

ADVANCED COMPUTER SECURITY INTRODUCTION cf. Schneider, Chapter 1 INTRODUCTION THEY ARE OUT TO GET YOU INTRODUCTION WHAT IS SECURITY? A systems security policies describe What the system is supposed to do Store and provide access

479 views • 16 slides
Overview Introduction to SMIL Introduction to W3C and XML Introduction to SMIL

Overview Introduction to SMIL Introduction to W3C and XML Introduction to SMIL

Overview Introduction to SMIL Introduction to W3C and XML Introduction to SMIL Writing a SMIL file Adding Media Objects Martin Halvey Clipping media files January 2008 Timing and Synchronising Layout World Wide

387 views • 14 slides
14 Introduction Introduction Bad guys can put malware into Example: hosts

14 Introduction Introduction Bad guys can put malware into Example: hosts

Introduction Introduction source Encapsulation ISO/OSI reference model message M application segment H t H t M transport network datagram H n H n H t M presentation: allow applications to frame link H l H n H t M interpret

583 views • 4 slides
Previous Lecture Introduction to SMIL 2 Introduction to W3C and XML Introduction to SMIL

Previous Lecture Introduction to SMIL 2 Introduction to W3C and XML Introduction to SMIL

Previous Lecture Introduction to SMIL 2 Introduction to W3C and XML Introduction to SMIL Writing a SMIL file Adding Media Objects Martin Halvey Clipping media files January 2008 Timing and Synchronising Layout

322 views • 8 slides
Lecture 1 Andreas Habegger Introduction Zynq Introduction Zynq Introduction Zynq PS vs. PL

Lecture 1 Andreas Habegger Introduction Zynq Introduction Zynq Introduction Zynq PS vs. PL

Introduction Zynq Lecture 1 Andreas Habegger Introduction Zynq Introduction Zynq Introduction Zynq PS vs. PL Processing System Processor Peripherals Data Buses AXI Bus Conclusion BTE5380 - Embedded Systems Octobre 2014 Andreas Habegger

1.81k views • 30 slides
2018.06 01 SMILE5 Introduction S E 5 02 Alpha Cloud M I L 03 Company Introduction 04

2018.06 01 SMILE5 Introduction S E 5 02 Alpha Cloud M I L 03 Company Introduction 04

2018.06 01 SMILE5 Introduction S E 5 02 Alpha Cloud M I L 03 Company Introduction 04 Project References S E 5 PART.1 SMILE5 Introduction M I L Introduction STORION-SMILE5 Residential Energy Storage System Inverter 5kW Output Input

1.06k views • 25 slides
Introduction to CICS Course introduction Course introduction What is CICS? What is an

Introduction to CICS Course introduction Course introduction What is CICS? What is an

Introduction to CICS Course introduction Course introduction What is CICS? What is an application server? Why use an application server? Course introduction Services provided by CICS How CICS applications are defined Scaling CICS to meet

1.84k views • 146 slides
Network Visualization Introduction Presented by Shahed Introduction Introduction Basic

Network Visualization Introduction Presented by Shahed Introduction Introduction Basic

Network Visualization Introduction Presented by Shahed Introduction Introduction Basic building blocks Node Links (relationship between nodes) Spatial information Network data

584 views • 9 slides
Introduction Introduction (1) Main argument of the paper: universities are not only

Introduction Introduction (1) Main argument of the paper: universities are not only

Le jugement des pairs comme outil de management des universits Peer-review as a management tool Christine Musselin (CSO, Sciences Po et CNRS) Avril 2013, Lirrsistible ascension du capitalisme acadmique Introduction Introduction (1)

590 views • 28 slides

More recommend