Lockers

There are 2 libraries implementing 2 types of MutEx es and Semaphores, both for linux.

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lockers.h Mutual exlusion provided by the usage of a queue.

MutEx: Prevents starvation by using a queue of waiting threads. Uses sleep and signals to reduce overhead.

Semaphore: Has fixed number of resources. Prevents starvation by using a queue of waiting threads. Uses sleep and signals to reduce overhead.

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lockers2.h Similar to pthread mutex and semaphore. Mutual exclusion provided by using atomic CAS.

MutEx: Uses atomic CAS. No starvation prevention (maybe the futex provides it). Uses futexes for reduced overhead.

Semaphore: Uses the defined mutex to work with the semaphore values. No starvation prevention (maybe the futex provides it). Uses futexes for reduced overhead.