New Alternative to poll() Interface

/dev/poll is a second form of polling for the completion of I/O events that provides much higher performance when a very large number of events must be polled for on file descriptors that remain open for a long time. This feature supplements poll(2); it does not replace poll(2).

For more information, see the System Interface Guide.

This feature was first available in the Solaris 7 5/99 release.