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=head1 NAME |
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Coro::Signal - coroutine signals (binary semaphores) |
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=head1 SYNOPSIS |
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use Coro::Signal; |
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$sig = new Coro::Signal; |
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$sig->wait; # wait for signal |
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# ... some other "thread" |
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$sig->send; |
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=head1 DESCRIPTION |
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=over 4 |
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=cut |
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package Coro::Signal; |
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use Coro::Process (); |
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$VERSION = 0.01; |
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sub new { |
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bless [], $_[0]; |
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} |
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|
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sub wait { |
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my $self = shift; |
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if ($self->[0]) { |
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$self->[0] = 0; |
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} else { |
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push @{$self->[1]}, $Coro::current; |
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Coro::Process::schedule; |
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} |
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} |
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sub send { |
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my $self = shift; |
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if (@{$self->[1]}) { |
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(shift @{$self->[1]})->ready; |
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} else { |
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$self->[0] = 1; |
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} |
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} |
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sub awaited { |
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!!@{$self->[1]}; |
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} |
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1; |
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=back |
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=head1 AUTHOR |
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Marc Lehmann <pcg@goof.com> |
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http://www.goof.com/pcg/marc/ |
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=cut |
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