abhinavmpandey08 / enee447project5_hw_template_Shuangqi_sessions

Project 5

Readings

• p5.pdf

Places that require your implementaion

• For timer-interrupt-induced context switch to work
  • scheduler: you need to implement THREAD_INIT and THREAD_RUN.
• For svc-interrupt-induced context switch to work
  • scheduler: you need to implement THREAD_INIT, THREAD_RUN and THREAD_SLEEP.
  • case SYSCALL_RD_WORD in trap_handler
  • case SYSCALL_WR_WORD in trap_handler
  • do_dev_word
  • wake_thread

How to test your code

• To test timer-interrupt-induced context switch:
  • uncomment the part for testing timer-interrupt context switch here
• To test svc-interrupt-induced context switch:
  • uncomment the part for testing svc-interrupt context switch here
  • start a thread in shell (for example do_blinker) and see if they are running simultaneously.
    • read p5.pdf to learn how to start a thread in shell

How is the first thread started

Context switch triggered by timer interrupt

Context swtich triggered by SVC call