Operating Systems

Deadlock & Banker's Algorithm

Learn deadlock detection, safe state analysis and resource allocation using Banker's Algorithm with interactive simulation.

Deadlock Simulator

Analyze process execution and detect safe or unsafe states.

A situation where processes wait forever for resources.

System can allocate resources safely without deadlock.

Prevents unsafe resource allocation dynamically.

Manages CPU, memory and device resource distribution.

Resource A

Resource B

Resource C

The system can execute processes safely without entering deadlock.

Process	Allocation	Maximum	Need
P0	0 , 1 , 0	7 , 5 , 3	7 , 4 , 3
P1	2 , 0 , 0	3 , 2 , 2	1 , 2 , 2
P2	3 , 0 , 2	9 , 0 , 2	6 , 0 , 0
P3	2 , 1 , 1	2 , 2 , 2	0 , 1 , 1
P4	0 , 0 , 2	4 , 3 , 3	4 , 3 , 1

Deadlock occurs when multiple processes hold resources while waiting for other resources locked by other processes.

Banker's Algorithm checks whether resource allocation keeps the system in a safe state before granting requests.

If a safe sequence exists, processes can complete execution without deadlock.