Sockets, Threads and Resource Locking Flashcards
1
Q
What does a socket allow?
A
A socket allows for two nodes on a network to talk to each other.
2
Q
What are the advantages of threads over a forked process?
A
They are faster to create, switch between, and communicate between.
3
Q
How are threads implemented in C?
A
They are not supported by language standard but are provided by POSIX in the form of pthreads.
4
Q
What is mutex used for?
A
locking and unlocking a resource
5
Q
What does a Semaphore do?
A
It is a signalling mechanism that protects a resource from being overwritten.
6
Q
How is the Semaphore implemented?
A
If the Semaphore count is 0 then the thread waits until it isn’t to access the resource. The count is incremented and decremented as resources are accessed and released.
