<?php
$c1 = new chan();

$num = 10;
go(function () use ($c1,$num) {
    $read_list = [$c1];
    $write_list = null;
    echo "select yield\n";
    $result = chan::select($read_list, $write_list, 2);
    echo "select resume res: ".var_export($result,1)."\n";
    if ($read_list)
    {
        foreach($read_list as $ch)
        {
            for ($i=0;$i<$num;$i++)
            {
                $ret = $ch->pop();
                echo "pop [#$i] ret:".var_export($ret,1)."\n";
            }
        }
    }
});

go(function () use ($c1,$num) {
    echo "push start\n";
    for ($i=0;$i<$num;$i++)
    {
        if ($i == 2) {
            echo "start sleep\n";
            co:sleep(1);
            echo "end sleep\n";
        }
        $ret = $c1->push("data-$i");
        echo "push [#$i] ret:".var_export($ret,1)."\n";
    }

});
echo "main end\n";