NAME select, pselect, FD_CLR, FD_ISSET, FD_SET, FD_ZERO, fd_set - synchronous ... void FD_ZERO(fd_set * set ); int pselect(int nfds , fd_set *_Nullable restrict readfdsNAME select, pselect, FD_CLR, FD_ISSET, FD_SET, FD_ZERO, fd_set - synchronous ... void FD_ZERO(fd_set * set ); int pselect(int nfds , fd_set *_Nullable restrict readfdsNAME select, pselect, FD_CLR, FD_ISSET, FD_SET, FD_ZERO, fd_set - synchronous ... void FD_ZERO(fd_set * set ); int pselect(int nfds , fd_set *_Nullable restrict readfdsNAME select, pselect, FD_CLR, FD_ISSET, FD_SET, FD_ZERO, fd_set - synchronous ... void FD_ZERO(fd_set * set ); int pselect(int nfds , fd_set *_Nullable restrict readfdssupports the other file-descriptor multiplexing APIs: pselect (2) and ppoll (2). close (2) Whensupports the other file-descriptor multiplexing APIs: pselect (2) and ppoll (2). close (2) When