Most of the Operating System including Linux and Windows uses which of the following method to deal with deadlock? code example

Example: deadlock in os

Deadlock is a situation where a set of processes 
are blocked because each process is holding a resource 
and waiting for another resource acquired by some other
process.Process 1 is holding Resource 1 and waiting for
resource 2 which is acquired by process 2, and process 2
is waiting for resource 1.