linux - What signal number do pthread_cond_wait and pthread_cond_signal use internally? -


do pthread_cond_wait , pthread_cond_signal use sigwait , kill (from signal.h), respectively, internally?

if yes, signal number use, mean, value passed int kill(pid_t pid, int sig) sig?

in general implementation these don't need regular unix signals. instead, relies on atomic operations on shared memory location , couple of os primitives "sleep" , "wakeup".


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