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=head1 NAME |
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Coro::Timer - timers and timeouts, independent of any event loop |
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=head1 SYNOPSIS |
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# This package is mostly obsoleted by Coro::AnyEvent. |
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use Coro::Timer qw(timeout); |
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# nothing exported by default |
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=head1 DESCRIPTION |
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|
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This package has been mostly obsoleted by L<Coro::AnyEvent>, the only |
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really useful function left in here is C<timeout>. |
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=over 4 |
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=cut |
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package Coro::Timer; |
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use common::sense; |
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|
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use Carp (); |
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use base Exporter::; |
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use Coro (); |
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use Coro::AnyEvent (); |
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|
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our $VERSION = 6.57; |
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our @EXPORT_OK = qw(timeout sleep); |
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# compatibility with older programs |
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*sleep = \&Coro::AnyEvent::sleep; |
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=item $flag = timeout $seconds |
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This function will wake up the current coroutine after $seconds seconds |
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and sets $flag to true (it is false initially). If $flag goes out |
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of scope earlier then nothing happens. |
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|
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This is used by Coro itself to implement the C<timed_down>, C<timed_wait> |
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etc. primitives. It is used like this: |
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|
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sub timed_wait { |
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my $timeout = Coro::Timer::timeout 60; |
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while (condition false) { |
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Coro::schedule; # wait until woken up or timeout |
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return 0 if $timeout; # timed out |
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} |
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return 1; # condition satisfied |
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} |
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=cut |
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sub timeout($) { |
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my $current = $Coro::current; |
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my $timeout; |
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bless [ |
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\$timeout, |
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(AE::timer $_[0], 0, sub { |
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$timeout = 1; |
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$current->ready; |
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}), |
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], "Coro::Timer::Timeout"; |
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} |
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package Coro::Timer::Timeout; |
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sub bool { ${ $_[0][0] } } |
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use overload 'bool' => \&bool, '0+' => \&bool; |
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1; |
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=back |
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=head1 AUTHOR/SUPPORT/CONTACT |
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|
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Marc A. Lehmann <schmorp@schmorp.de> |
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http://software.schmorp.de/pkg/Coro.html |
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=cut |
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