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=head1 NAME |
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Coro::EV - do events the coro-way |
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=head1 SYNOPSIS |
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use Coro; |
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use Coro::EV; |
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|
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EV::loop; |
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=head1 DESCRIPTION |
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This module does two things: First, it offers some utility functions that |
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might be useful for coroutines, and secondly, it integrates Coro into the |
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EV main loop: |
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Before the process blocks (in EV::loop) to wait for events, this module |
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will schedule and run all ready (= runnable) coroutines of the same or |
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higher priority. After that, it will cede once to a coroutine of lower |
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priority, then continue in the event loop. |
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That means that coroutines with the same or higher pripority as the |
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coroutine running the main loop will inhibit event processing, while |
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coroutines of lower priority will get the CPU, but cannot completeley |
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inhibit event processing. |
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|
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=head2 RUNNING WITH OR WITHOUT A MAINLOOP |
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In general, you should always run EV::loop, either in your main program, |
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or in a separate coroutine. If you don't do that and all coroutines start |
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waiting for some events, this module will run the event loop once, but |
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this is very inefficient. |
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|
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=head1 FUNCTIONS |
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|
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=over 4 |
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=cut |
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package Coro::EV; |
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|
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no warnings; |
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use strict; |
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|
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use Carp; |
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no warnings; |
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|
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use Coro; |
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|
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use EV (); |
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use XSLoader; |
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|
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BEGIN { |
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our $VERSION = 4.91; |
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local $^W = 0; # avoid redefine warning for Coro::ready; |
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XSLoader::load __PACKAGE__, $VERSION; |
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} |
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our $IDLE = new Coro sub { |
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while () { |
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&_loop_oneshot; |
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&Coro::schedule; |
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} |
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}; |
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$IDLE->{desc} = "[EV idle process]"; |
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$Coro::idle = sub { $IDLE->ready }; |
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|
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=item $revents = Coro::EV::timed_io_once $fileno_or_fh, $events, $timeout |
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Blocks the coroutine until either the given event set has occured on the |
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fd, or the timeout has been reached (if timeout is zero, there is no |
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timeout). Returns the received flags. |
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|
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=cut |
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|
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sub timed_io_once($$;$) { |
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&_timed_io_once; |
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do { &Coro::schedule } while !$#_; |
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pop |
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} |
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|
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=item Coro::EV::timer_once $after |
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Blocks the coroutine for at least C<$after> seconds. |
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=cut |
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sub timer_once($) { |
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&_timer_once; |
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do { &Coro::schedule } while !$#_; |
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pop |
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} |
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|
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sub readable_ev { |
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_readable_ev $_[0], my $done; |
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do { &Coro::schedule } while !defined $done; |
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$done |
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} |
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sub writable_ev { |
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_writable_ev $_[0], my $done; |
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do { &Coro::schedule } while !defined $done; |
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$done |
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} |
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1; |
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=back |
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=head1 AUTHOR |
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|
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Marc Lehmann <schmorp@schmorp.de> |
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http://home.schmorp.de/ |
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=cut |
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