Types of Deadlock in Operating Systems

Описание: 1. Resource Deadlock
Occurs when two or more processes are each waiting for resources held by the others, causing a circular chain of dependencies.

2. Communication Deadlock
Happens when processes are waiting to communicate with each other, but none can proceed because they are all waiting for a message from another process.

3. Thread Deadlock
Specific to multi-threaded environments, this type occurs when threads are blocked forever, waiting for resources held by other threads within the same application.

4. I/O Deadlock
Arises when processes are waiting for I/O operations to complete, but the I/O devices are held by other processes, causing a deadlock situation.

5. Hardware Deadlock
Occurs in systems with shared hardware resources when multiple processes compete for access, creating cyclic dependencies.

6. Software Deadlock
Caused by programming errors, such as incorrect implementation of synchronization mechanisms like semaphores and mutexes, leading processes to wait indefinitely.

7. Circular Wait Deadlock
A subtype of resource deadlock where a closed chain of processes exists, each holding a resource and waiting for a resource held by the next process in the chain.

8. No Preemption Deadlock
Happens when resources cannot be forcibly taken away from the processes holding them, causing a stalemate situation.