Semaphores in one thread

Question

I was wondering if a mutex or semaphore can be used if there is only one thread?

Thank you for your help.

Answer 1

I design thread protection in my components because they are reusable and scalable components designed to work in any environment that I can really expect. Many times they are initially used in a single-thread environment. Often, implementation scales expand to include more threads. Then I do not need to chase resources to protect against new access scenarios.

Answer 2

Mutex , Mutex , . , Mutex .

Answer 3

, , , , . , ( ).

Answer 4

. , . , .

Answer 5

system-wide semaphores ( ) inter-process communication.

You can signal from a single-threaded process to another single-threaded process using acquire()/release()-ing for a semaphore with a name, for example.

Answer 6

In case the environment supports system interrupts, it adds non-linear behavior. A semaphore can be used to sleep in the main thread until an interrupt is triggered.