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Deadlock Prevention in OS in Hindi ??? ?????????????????? ?????? ???????????? ?????? ???????????? ????????????????

Reetesh Dulawat Reetesh Dulawat

?????????????????? ?????????????????????, ???????????? ??????????????? Operating System ?????? ??????????????? ????????? ?????????????????? ????????? ??????????????? ??????????????? ????????? ???????????? 'Deadlock Handling' ?????? ?????????-????????? ?????????????????? ?????? ???????????? ????????? ?????? ?????? ??????????????? ?????? ???????????? ???????????? (Strict) ??????????????? ?????? ???????????? ????????? ????????? ??????????????????, ??????????????? ????????? ?????? Deadlock Prevention.

??????????????? ?????? ?????? "Prevention is better than Cure" (???????????? ?????? ??????????????? ???????????? ??????)??? ???????????????????????? ?????????????????? ?????? ????????? ???????????? ?????? ??????????????? ?????????

?????? ??????????????? ????????? ???????????? ???????????? Deadlock Prevention ???????????? ??????? (What is Deadlock Prevention in Hindi?), ?????? ?????????????????? ?????? 4 ??????????????? ?????????????????? (Conditions) ?????? ????????? ??????????????? ???????????? ?????? ?????????????????? ?????? ???????????? ????????? ???????????? ?????????, ???????????? ???????????? ????????? ????????????????????? ?????? ??????????????? ?????????

?????????????????? ?????? ??????????????? ?????? ????????? ?????? ???????????? ????????? ???????????? ???????????? Deadlock Prevention in OS in Hindi ?????? ???????????? ????????? ???????????????????????? ????????????????????? ????????? ????????????

What is Deadlock Prevention in Hindi? - ?????????????????? ??????????????????????????? ???????????? ???????

Deadlock Prevention ?????? ????????? ??????????????? ?????? ?????????????????? ?????? ?????????????????? ?????? ????????? ????????? ??????????????????????????? (Restrictions) ????????? ???????????? ????????? ?????? ?????????????????? ???????????? ???????????????????????? ?????? ????????????

???????????? ?????? ?????? ??????????????? ?????????, ?????????????????? ???????????? ?????? ????????? 4 ?????????????????? (Coffman Conditions) ?????? ?????? ????????? ???????????? ??????????????? ??????:

  1. Mutual Exclusion
  2. Hold and Wait
  3. No Preemption
  4. Circular Wait
Deadlock-Prevention-in-OS-in-Hindi

The main idea of deadlock prevention in Hindi - ?????????????????? ??????????????????????????? ?????? ??????????????? ??????????????????:

????????? ?????? ?????? 4 ?????????????????? ????????? ?????? ???????????? ?????? ?????? ?????? ????????? (Fail) ?????? ????????? ?????? ????????? ?????????, ?????? ?????????????????? ????????? ???????????? ?????????????????? ?????? ?????????????????? ?????? ????????? ?????????????????? ???????????? ????????? ?????? ?????? ?????????????????? ????????? ???????????? ?????? ??? ?????? ???????????????

Strategy: Breaking the 4 Necessary Conditions

???????????? ??????????????? ????????? ?????? ?????? ?????? ??????????????? ?????????????????? ?????? ??????-?????? ???????????? ???????????? ????????? ???????????? ?????????:

1. Eliminating Mutual Exclusion (?????????????????????????????? ????????????????????????????????? ?????? ???????????????)

  1. Problem: ?????????????????? ?????? ???????????? ?????? ?????? ????????????????????? non-shareable (???????????? Printer) ?????????
  2. Solution: ????????? ?????? ????????? ??????????????????????????? ?????? Shareable ????????? ????????? (???????????? Read-only files), ?????? ????????? ?????? ????????????????????? ????????????????????? ???????????? ??????????????????
  3. Reality: ?????? ???????????? ????????? ???????????? ???????????? ????????? ????????????????????? ?????? ????????? ?????????????????? ???????????? ?????????????????? ?????? ?????? ????????? ????????? ?????? ?????? ????????????????????? ????????? ?????? ???????????? ????????? ???????????????, ?????? ?????? ???????????? ?????? ???????????? ????????? ???????????? ????????? ???????????????

2. Eliminating Hold and Wait (??????????????? ????????? ????????? ?????? ???????????????)

  1. Problem: ?????? ????????????????????? ????????? ????????????????????? ????????? ?????? ???????????? ?????? ?????? ?????????????????? ?????? ????????????????????? ?????? ????????? ?????????
  2. Solution: ?????? ?????? ???????????? ????????? ???????????? ????????? ?????? ????????????????????? ?????? ???????????? ????????? ???????????? ???????????? ?????? ???????????? ?????? ???????????? ????????????????????? ?????? ????????? ?????????????????? ?????????????????? ????????? ???????????? ??????????????? ?????????, ????????? ????????? ???????????? ????????????, ???????????? ???????????????
  3. Drawback: ???????????? Resource Wastage ???????????? ???????????? ????????? ????????? ?????????????????? ????????????????????? ?????? ??????????????? 1 ???????????? ????????? ??????, ??????????????? ????????????????????? ?????? ????????? ????????? ?????? ????????? (Hold) ????????? ?????????

3. Eliminating No Preemption (?????? ????????????-?????????????????? ?????? ???????????????)

  1. Problem: ?????? ????????????????????? ?????? ???????????????????????? ????????????????????? ???????????? ????????? ???????????????
  2. Solution: ?????? ???????????? ??????????????? ????????? ?????? ????????? ????????? ????????????????????? (A) ???????????? ????????????????????? ?????? ???????????? ???????????? ?????? ?????? ?????? ????????? ???????????? ???????????????, ?????? ???????????? ????????? ?????? ???????????? ?????? ????????????????????? (Hold) ?????????, ?????????????????? ?????? Release ???????????? ???????????? (???????????? ???????????? ????????? ???????????? ???????????????)???
  3. Use Case: ?????? ??????????????? CPU Registers ?????? Memory ?????? ????????? ?????? ????????? ??????, ??????????????? Printer ???????????? ?????????????????? ?????? ????????? ?????? ????????? ???????????? ???????????? (????????? ?????????????????? ????????? ????????? ???????????? ?????? ??????????????????)???

4. Eliminating Circular Wait (????????????????????? ????????? ?????? ???????????????)

    1. Problem: ??????????????????????????? ?????? ????????????????????? (Circle) ????????? ??????-??????????????? ?????? ????????????????????? ???????????? ????????????
    2. Solution: ?????? ???????????? Practical ??????????????? ?????????
    • ?????? ?????? ????????????????????? ?????? ?????? Unique Number ?????? ???????????? ????????? (????????????: CPU=1, Printer=2, Scanner=3)???
    • ???????????? ?????? ?????? ?????? ????????????????????? ????????????????????? ?????? ??????????????? ???????????? ????????? ???????????? (Increasing Order) ????????? ?????? ???????????? ???????????? ?????????
    • ????????? ????????????????????? ?????? ????????? ????????????????????? ???????????? 3 ??????, ?????? ?????? ???????????? 1 ?????? 2 ?????? ???????????? ???????????? ?????? ???????????????
    1. Result: ???????????? ????????? ?????? Cycle (?????????) ???????????? ??????????????? ?????? ?????????????????? ???????????? ????????? ????????? ??????????????????

    Difference between Prevention and Avoidance in Hindi

    ??????????????? ?????????????????????????????? ?????? ??????????????? ????????? ????????????????????? ?????? ???????????? ?????????:

    FeatureDeadlock PreventionDeadlock Avoidance
    Logic?????? 4 ?????????????????? ????????? ?????? ?????? ?????? ??????????????? ?????? ????????? ???????????? ??????????????? ????????????????????? ???????????? ?????? ???????????? Safe State ????????? ???????????? ?????????
    Restrictions?????? ?????????????????? ?????? ????????? ??????????????????????????? ??????????????? ??????????????? ?????????????????????????????? ??????, ?????? ????????????????????? ??????????????? ?????????
    ExampleCircular Wait ?????? ??????????????????Banker???s Algorithm.

    Conclusion - ????????????????????????

    ???????????? ?????????????????? ?????? ?????? ?????? ??????????????? ?????? ???????????? Deadlock Prevention in OS in Hindi (4 ?????????????????? ?????? ??????????????? ?????? ???????????????) ??????????????? ????????? ????????? ???????????? ???????????????

    ????????????????????? ????????? ???????????? ??????, Circular Wait ?????? ??????????????? ?????? ?????????????????? ?????? ??????????????? ?????? ???????????? ????????????????????? ?????? ?????????????????????????????? ??????????????? ??????, ????????????????????? ???????????? ?????????????????? ????????? Resources ?????? ???????????? ????????????????????? ???????????? ?????????

    ????????? ???????????? ?????? ????????? ?????????????????? ????????? ?????? ?????? ????????? ???????????? ????????????????????? ?????? ????????? ???????????? ???????????????

    FAQs

    Q1. Deadlock Prevention ?????? ???????????? ????????? ?????????????????? ???????????? ???????

    Ans: ???????????? ???????????? ????????? ?????????????????? Low Device Utilization ????????? ????????? ?????????????????? ?????? ???????????? ?????? ????????? ????????????????????? ???????????? ????????? ???????????? ????????? ??????????????? ????????????????????? ?????????????????? ????????? ???????????? ?????? ???????????????

    Q2. ????????? ?????? ???????????? ?????? ??????????????? ???????????? ???????????? ???????

    Ans: Circular Wait ?????? ??????????????? ???????????? ???????????? ?????? ????????????????????? ?????????

    Q3. ???????????? Mutual Exclusion ?????? ???????????? ????????? ??????????????? ?????? ???????????? ???????

    Ans: ????????????, ????????????????????? ????????? ??????????????????????????? (???????????? ?????????????????????) ?????????????????? ?????? ?????? non-shareable ???????????? ????????????

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