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47 lines
1.6 KiB
47 lines
1.6 KiB
<?php |
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require __DIR__ . '/../vendor/autoload.php'; |
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$args = getopt('i:o:t:'); |
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$if = isset($args['i']) ? $args['i'] : '/dev/zero'; |
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$of = isset($args['o']) ? $args['o'] : '/dev/null'; |
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$t = isset($args['t']) ? $args['t'] : 1; |
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// passing file descriptors requires mapping paths (https://bugs.php.net/bug.php?id=53465) |
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$if = str_replace('/dev/fd/', 'php://fd/', $if); |
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$of = str_replace('/dev/fd/', 'php://fd/', $of); |
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$loop = new React\EventLoop\StreamSelectLoop(); |
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// setup information stream |
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$info = new React\Stream\Stream(STDERR, $loop); |
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$info->pause(); |
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if (extension_loaded('xdebug')) { |
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$info->write('NOTICE: The "xdebug" extension is loaded, this has a major impact on performance.' . PHP_EOL); |
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} |
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$info->write('piping from ' . $if . ' to ' . $of . ' (for max ' . $t . ' second(s)) ...'. PHP_EOL); |
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// setup input and output streams and pipe inbetween |
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$in = new React\Stream\Stream(fopen($if, 'r'), $loop); |
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$out = new React\Stream\Stream(fopen($of, 'w'), $loop); |
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$out->pause(); |
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$in->pipe($out); |
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// stop input stream in $t seconds |
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$start = microtime(true); |
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$timeout = $loop->addTimer($t, function () use ($in, &$bytes) { |
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$in->close(); |
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}); |
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// print stream position once stream closes |
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$in->on('close', function () use ($in, $start, $timeout, $info) { |
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$t = microtime(true) - $start; |
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$timeout->cancel(); |
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$bytes = ftell($in->stream); |
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$info->write('read ' . $bytes . ' byte(s) in ' . round($t, 3) . ' second(s) => ' . round($bytes / 1024 / 1024 / $t, 1) . ' MiB/s' . PHP_EOL); |
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$info->write('peak memory usage of ' . round(memory_get_peak_usage(true) / 1024 / 1024, 1) . ' MiB' . PHP_EOL); |
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}); |
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$loop->run();
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