Multithreaded, concurrent, asynchronous, deadlock

Thread: A thread is an execution unit of a process, a thread is a basic unit that is dispatched and dispatched independently by the system, and multithreading techniques are designed to improve CPU utilization.

Concurrency: Concurrent execution does not concurrently execute the CPU, at any time or only one thread can occupy the CPU, but the frequency of CPU switching between multiple threads is fast, giving the illusion.

Asynchronous:

Deadlock: A resource can only be used by one process, before it is not used or released, other processes can not be forcibly deprived, a process if the resource is requested but encountered a blocking situation, the obtained resources are not put on the state, a number of processes to form a tail-to-end, cyclic waiting for the resource relationship.

Multithreaded, concurrent, asynchronous, deadlock