19AIE203
Topological Sorting
Data Structures and Algorithms - 2
19AIE202
Deadlock Detection
Operating Systems
Deadlock Detection
Operating Systems
+
+
Topological Sorting
Data Structures and Algorithms - 2
Deadlock Detection
Topological Sorting
using
Aadharsh Aadhithya - CB.EN.U4AIE20001
Anirudh Edpuganti - CB.EN.U4AIE20005
Madhav Kishore - CB.EN.U4AIE20033
Onteddu Chaitanya Reddy - CB.EN.U4AIE20045
Pillalamarri Akshaya - CB.EN.U4AIE20049
Team-1
Deadlock Detection
Topological Sorting
using
Deadlock Detection
What is Deadlock ?
Son
What is Deadlock ?
Son
Hungry
What is Deadlock ?
Son
Hungry
Mother
Cook
What is Deadlock ?
Son
Hungry
Mother
Cook
Seller
Sell
Food
What is Deadlock ?
Son
Hungry
Mother
Cook
Seller
Sell
Food
Rice
What is Deadlock ?
Son
Hungry
Mother
Cook
Seller
Sell
Food
Rice
Come
What is Deadlock ?
Back to Subject 😅
What is Deadlock ?
Resource
What is Deadlock ?
Process
Resource
What is Deadlock ?
What is Deadlock ?
Mutual Exclusion
What is Deadlock ?
Mutual Exclusion
What is Deadlock ?
Mutual Exclusion
Give
Took
What is Deadlock ?
Give
Took
Hold and Wait
Mutual Exclusion
What is Deadlock ?
Mutual Exclusion
Give
Took
Hold and Wait
Greedy
What is Deadlock ?
Mutual Exclusion
Give
Took
Hold and Wait
Greedy
No Premption
What is Deadlock ?
Mutual Exclusion
Hold and Wait
No Premption
What is Deadlock ?
Mutual Exclusion
Hold and Wait
No Premption
Circular Wait
What is Deadlock ?
Mutual Exclusion
Hold and Wait
No Premption
Circular Wait
What is Deadlock ?
Mutual Exclusion
Hold and Wait
No Premption
Circular Wait
Hold Simulataneously
What is Deadlock ?
Resource Allocation Graph
What is Deadlock ?
Resource Allocation Graph
Deadlock🤔?
What is Deadlock ?
Resource Allocation Graph
Satisfy 4 conditions🤷♂️
What is Deadlock ?
Resource Allocation Graph
How? Which Algorithm?😒
What is Deadlock ?
Resource Allocation Graph
Topological Sorting... 🤔
What is Deadlock ?
Resource Allocation Graph
Let's Proceed then 🙌
Topological Sorting
Topological Sorting
DFS
Topological Sorting
DFS
Acyclic Directed Graph
Topological Sorting
DFS
A
B
C
D
E
F
Topological Sorting
DFS
A
B
C
D
E
F
Topological Sorting
DFS
A
B
C
D
E
F
Topological Sorting
DFS
A
B
C
D
E
F
Topological Sorting
DFS
A
B
C
D
E
F
Topological Sorting
DFS
A
B
C
D
E
F
Topological Sorting
DFS
A
B
C
D
E
F
Topological Sorting
DFS
A
B
C
D
E
F
Topological Sorting
DFS
A
B
C
D
E
F
Topological Sorting
DFS
A
B
C
D
E
F
B
Topological Sorting
DFS
A
B
C
D
E
F
B
D
Topological Sorting
DFS
A
B
C
D
E
F
B
D
C
Topological Sorting
DFS
A
B
C
D
E
F
B
D
C
Topological Sorting
DFS
A
B
C
D
E
F
B
D
C
Topological Sorting
DFS
A
B
C
D
E
F
B
D
C
A
Topological Sorting
DFS
A
B
C
D
E
F
B
D
C
A
F
Topological Sorting
DFS
A
B
C
D
E
F
B
D
C
A
F
Topological Sorting
DFS
A
B
C
D
E
F
B
D
C
A
F
E
Topological Sorting
DFS
B
D
C
A
F
E
Topological Sort Order
Topological Sorting
DFS
B
D
C
A
F
E
Topological Sort Order
Topological Sorting
DFS
B
D
C
A
F
E
Topological Sort Order
Topological Sorting
DFS
B
D
C
A
F
E
Topological Sort Order
Topological Sorting
DFS
B
D
C
A
F
E
Topological Sort Order
Topological Sorting
DFS
B
D
C
A
F
E
Topological Sort Order
Topological Sorting
DFS
B
D
C
A
F
E
Topological Sort Order
Topological Sorting
Deadlock Detection
using
Resource-Allocation Graph
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
R3
R_3
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
R3
R_3
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
R3
R_3
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
R3
R_3
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
R3
R_3
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
R3
R_3
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
R3
R_3
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
R3
R_3
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
R3
R_3
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
R3
R_3
Resource-Allocation Graph
R1
R_1
R4
R_4
R3
R_3
R5
R_5
R2
R_2
P1
P_1
P5
P_5
P3
P_3
P4
P_4
P2
P_2
P5
P_5
R3
R_3
Cycle Detected !!!
There is a Deadlock !
Code
Thank you Mam!
19AIE203 Topological Sorting Data Structures and Algorithms - 2
OS Sem3 Project
By Incredeble us
OS Sem3 Project
- 77
