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=head1 NAME |
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Coro::Specific - manage coroutone-specific variables. |
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=head1 SYNOPSIS |
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use Coro::Specific; |
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my $ref = new Coro::Specific; |
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$$ref = 5; |
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print $$ref; |
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=head1 DESCRIPTION |
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This module can be used to create variables (or better: references to |
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them) that are specific to the currently executing coroutine. This module |
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does not automatically load the Coro module (so the overhead will be small |
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when no coroutines are used). |
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=over 4 |
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=cut |
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package Coro::Specific; |
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pcg |
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BEGIN { eval { require warnings } && warnings->unimport ("uninitialized") } |
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$VERSION = 0.97; |
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=item new |
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Create a new coroutine-specific scalar and return a reference to it. The |
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scalar is guarenteed to be "undef". Once such a scalar has been allocated |
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you cannot deallocate it (yet), so allocate only when you must. |
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=cut |
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my $idx; |
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sub new { |
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my $var; |
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tie $var, Coro::Specific::; |
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\$var; |
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} |
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sub TIESCALAR { |
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my $idx = $idx++; |
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bless \$idx, $_[0]; |
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} |
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sub FETCH { |
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$Coro::current->{specific}[${$_[0]}]; |
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} |
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sub STORE { |
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$Coro::current->{specific}[${$_[0]}] = $_[1]; |
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} |
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#sub DESTROY { |
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# push @idx, $$_[0]; |
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#} |
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1; |
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=back |
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=head1 BUGS |
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The actual coroutine specific values do not automatically get destroyed |
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when the Coro::Specific object gets destroyed. |
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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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