IO::Poll

Section: Perl Programmers Reference Guide (3perl)
Updated: 2019-04-20
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NAME

IO::Poll - Object interface to system poll call

SYNOPSIS

    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);

DESCRIPTION

"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 ti "poll"

AUTHOR

Graham Barr. Currently maintained by the Perl Porters. Please report all bugs to <perlbug@perl.org>.

IO::Poll

NAME

SYNOPSIS

DESCRIPTION

METHODS

SEE ALSO

AUTHOR

COPYRIGHT

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