В Linuxman 2 select
НАЗВАНИЕ select, pselect, FD_CLR, FD_ISSET, FD_SET, FD_ZERO - синхронное мультиплексирование ввода-вывода
Во FreeBSD - есть еще такая пометка: "The default size of FD_SETSIZE is currently 1024. In order to accommodate programs which might potentially use a larger number of open files with select(), it is possible to increase this size by having the...
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