Event flags to poll for from <poll.h>. POLLIN indicates that you * should monitor this file descriptor for becoming ready to read from, * and POLLOUT indicates that you should monitor this file descriptor for * nonblocking write readiness.
See Implementation
Event flags to poll for from <poll.h>. POLLIN indicates that you * should monitor this file descriptor for becoming ready to read from, * and POLLOUT indicates that you should monitor this file descriptor for * nonblocking write readiness.