IO::Poll3p
Object interface to system poll call
Usage
use IO::Poll qw(POLLRDNORM POLLWRNORM POLLIN POLLHUP);$poll = IO::Poll->new();$poll->mask($input_handle => POLLIN);$poll->mask($output_handle => POLLOUT);$poll->poll($timeout);$ev = $poll->events($input);
Overview
"IO::Poll" is a simple interface to the system level poll routine.
Methods
- mask ( IO [, EVENT_MASK ] )
-
If EVENT_MASK is given, then, if EVENT_MASK is non-zero, IO is added to the list of file descriptors and the next call to poll will check for any event specified in EVENT_MASK. If EVENT_MASK is zero then IO will be removed from the list of file descriptors.
If EVENT_MASK is not given then the return value will be the current event mask value for IO.
- poll ( [ TIMEOUT ] )
-
Call the system level poll routine. If TIMEOUT is not specified then the call will block. Returns the number of handles which had events happen, or -1 on error.
- events ( IO )
-
Returns the event mask which represents the events that happened on IO during the last call to
"poll".
- remove ( IO )
-
Remove IO from the list of file descriptors for the next poll.
- handles( [ EVENT_MASK ] )
-
Returns a list of handles. If EVENT_MASK is not given then a list of all handles known will be returned. If EVENT_MASK is given then a list of handles will be returned which had one of the events specified by EVENT_MASK happen during the last call to
"poll".
Releases
32 releases since OpenBSD 5.0; the text changed 20 times.