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#!/usr/bin/perl |
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|
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# the classical producer/consumer example, using semaphores |
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# one process produces items, send s a signal. |
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# another process waits for that signal and |
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# consumed the item. |
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|
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use Coro; |
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use Coro::Process; |
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use Coro::Semaphore; |
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|
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my $produced = new Coro::Semaphore; |
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my $finished = new Coro::Semaphore 0; |
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|
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async { |
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for my $i (0..9) { |
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print "produced $i\n"; |
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push @buffer, $i; |
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$produced->up; |
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yield if @buffer > 5; # simulate memory pressure ;) |
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} |
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print "work done\n"; |
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$finished->up; |
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$idle; |
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}; |
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|
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async { |
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while () { |
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$produced->down; |
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my $i = shift @buffer; |
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print "consumed $i\n"; |
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} |
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}; |
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|
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$finished->down; |
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|
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print "job finished\n"; |
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