Resources

Resource Management

• in general, the kernel does not track resources, except for specific situations
• does not keep track of tasks, unless they are active (care of taken by the scheduler) or blocked (care of taken indirectly by an alarm, if any).
• advantage: save time and memory, no need for create() and delete() methods, memory for resources can be allocated automatically or manually –> freedom
• disadvantage: resources must be tracked by the application.

Allocation and Deallocation

• up to the application, see memory

Initialization

• kernel assumes, that resources provided by the application are always in a valid state.
• initialization is zeroing plus setting some members

Resource Leaks

• must be prevented by the application

Resource Contention

• must be resolved by the application
• the kernel simply provides the means therefore, such as mutexes.