c - Signal counter while waiting on condition variable -


does condition variable have number - number of times has been signaled associated (like semaphore)? i.e., if 5 threads signal condition variable, , assuming of them canceled, possible condition variable waited on 5 other threads, afterwards? or, 1 thread unblock after calling wait?

if 5 threads signal condition variable, , assuming of them canceled, possible condition variable waited on 5 other threads, afterwards?

although language , implementation specific, typically answer there not number. if condition signalled without there being threads waiting on condition signals lost. if 5 signals generated , thread waits on condition, has wait next signal delivered.

now question c (i assume posix threads) can add details pthread_cond_signal() manual:

the pthread_cond_broadcast() , pthread_cond_signal() functions shall have no effect if there no threads blocked on cond.

there no counter keeps track of posix condition signals.


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