Issues in deadlock n resolution

·         Required an examination of the status of process-resources interaction for the presence of cyclical wait.
·         Two conditions exist in the DS:
1.      Once a cycle is formed in the WFG, it persist until its is detected and broken, and
2.      Cycle detection can proceed concurrently with the normal activities of a system.
3.      We’ll study the techniques to detect deadlock in a DS instead of trying to prevent or avoid it.
·         Deadlock detection and resolution entails addressing two basic issues:
1.      First, detection of existing  deadlocks and
2.      Second resolution of detected deadlocks.
·         The detection of deadlocks involves two issues:
1.      Maintenance of the WFG and
2.      Search of the WFG for the presence of cycles.
·         In distributed systems, a cycle may involve several sites , so the search for cycles greatly depends upon the WFG of the system is represented across the system.
·         Depending upon the manner in which WFG information is maintained and the search for cycles is carried out, there are centralized, distributed, and hierarchical algorithms for deadlock detection in distributed systems.
·         Deadlock resolution involves braking existing wait-for dependencies in the system WFG to resolve the deadlock.
·         It involves rolling back one or more processes that are deadlocked and assigning their resources to blocked processes in the deadlock so that they can resume execution.
DISTRIBUTED SYSTEM covered following topics in these notes.
Python Programming ↓ 👆
Java Programming ↓ 👆
JAVA covered following topics in these notes.
JAVA Programs
Principles of Programming Languages ↓ 👆
Principles of Programming Languages covered following topics in these notes.

Previous years solved papers:
A list of Video lectures References:
  1. Sebesta,”Concept of programming Language”, Pearson Edu 
  2. Louden, “Programming Languages: Principles & Practices” , Cengage Learning 
  3. Tucker, “Programming Languages: Principles and paradigms “, Tata McGraw –Hill. 
  4. E Horowitz, "Programming Languages", 2nd Edition, Addison Wesley

    Computer Organization and Architecture ↓ 👆

    Computer Organization and Architecture covered following topics in these notes.

    1. Structure of desktop computers
    2. Logic gates
    3. Register organization
    4. Bus structure
    5. Addressing modes
    6. Register transfer language
    7. Direct mapping numericals
    8. Register in Assembly Language Programming
    9. Arrays in Assembly Language Programming


    1. William stalling ,“Computer Architecture and Organization” PHI
    2. Morris Mano , “Computer System Organization ”PHI

    Computer Network ↓ 👆
    Computer Network covered following topics in these notes.
    1. Data Link Layer
    2. Framing
    3. Byte count framing method
    4. Flag bytes with byte stuffing framing method
    5. Flag bits with bit stuffing framing method
    6. Physical layer coding violations framing method
    7. Error control in data link layer
    8. Stop and Wait scheme
    9. Sliding Window Protocol
    10. One bit sliding window protocol
    11. A protocol Using Go-Back-N
    12. Selective repeat protocol
    13. Application layer
    1. Andrew S. Tanenbaum, David J. Wetherall, “Computer Networks” Pearson Education.
    2. Douglas E Comer, “Internetworking with TCP/IP Principles, Protocols, And Architecture",Pearson Education
    3. KavehPahlavan, Prashant Krishnamurthy, “Networking Fundamentals”, Wiley Publication.
    4. Ying-Dar Lin, Ren-Hung Hwang, Fred Baker, “Computer Networks: An Open Source Approach”, McGraw Hill.