README.md

Embedded OS

Day 1

• Created Repository.
• Added .gitignore, pushed "Hello World" program to check the working of github.
• Learned Basic Git commands.

Day 2

• Basic Calculator using Makefile.
  • add(), sub(), mul(), div()

Day 3

• Section Demo Program
• Process Id / Parent Process ID Demo Program
• Library call and System Call Demo Program
• Used "STRACE" Command

Day 4

• File operations on Kernel
  • open(), close(), read(), write()
• Static Library & Dynamic Library programs
  • Static Linking & Dynamic Linking

Day 5

• Process Scheduling
• Fork Demo -created a child process

Day 6

• Fork Demo (cont.)
  • created a child process and checked PID & PPID
• Zombie Process Program
• Orphan Process Program
• Program to check the number of Zombie Process a system can handle.
• Installed EMUX in PC.

Day 7

• Pipe Demo Program
• FIFO Demo
  • Created FIFO with access permissions "0660"
  • Sender program
  • Receiver program
• Thread Demo Program

Day 8

• Assignment 01: Application of FIFO

  1. Write your own utility using System Calls (open,close,read,write) to copy data from one file to another file. Essentially you are implementing a copy utility. Fullfledged utility should support the following options:
  • Handling all the Errors.
  • cp srcfile destfile
  2. Write your own utility using Library Calls (fopen,fclose,fread,fwrite) to copy data from one file to another file. Essentially you are implementing a copy utility. Fullfledged utility should support the following options:
  • Handling all the Errors.
  • cp srcfile destfile
  3. Case Study Which of the following program took more time to copy files.
     • Small
     • Medium
     • Large

• Program Threadjoin.

• Program Thread Attributes

  • Joinable & Detachable

• Program to check Race Condition.

Day 9

• Program Mutex Demo
• Program for Recursive
  • Problem
  • Solution
• Program for Mutex-Trylock
• Program for Mutex-Timedlock

Day 10

• Semaphore
  • Mutual Exclusion Program
  • Overview of Use of Semaphore in signaling
• Cross Compilation done for all programs

Day 11

• Program without using Signalling Method (Problem)
• Program using Signalling Method (Solution)
• Program for Read/Write Lock Method.

Day 12

• Program for Exec() system Call
  • Exec_demo
• Program for Barrier Synchronization
  • Problem
  • Solution
• Program for Conditional Variable
  • Problem
  • Solution
• Assignments Completed
  • Process Synchronization using Signalling Semaphore (With Initial values s1=s2=1)
  • Process Synchronization using Counting Semaphore
  • To create own Dummy_shell

Day 13

• Demo Program for Read & Write using Shared Memory
• Demo Program to send & receive data using Message Queue
• Assignment -IPC

1. Shared Memory:
   • P1: Declare your own structure => {pid, ppid}
   • P1: Tranfer structure to another process P2
   • P2: Receive this structure and print it out
2. Message Queue:
   • P1: Declare your own structure => {pid, ppid}
   • P1: Tranfer structure to another process P2
   • P2: Receive this structure and print it out

Day 14

• Demo Program for Socket
  • Client
  • Server
• Assignment : Error Checking Mutex

Day 15

• Shared Memory using Semaphores
• Uboot & Custom Root File System

  gcc

geeks