What are the special
programming problems in systems with interleaving or distributed concurrency?
Firstly, whether we have an interleaved system, or a real
distributed system, we have to protect Critical Regions of
code. These are sections of code that may alter the value of
Shared Variables. Because of concurrency, it is possible
for incorrect values to arise, where the sequence of operations
on these variables is not carefully controlled.
This is discussed further in Chapter 3.
Secondly, we have to control ownership of resources. A number
of incorrect behaviors can result from incorrect sequences of
resource allocation. These are:
Lack of Fairness