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<?php |
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/** |
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* File ProcessorCounter.php |
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* |
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* @author Edward Pfremmer <[email protected]> |
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*/ |
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namespace Epfremme\ProcessQueue\System; |
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/** |
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* Class ProcessorCounter |
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* |
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* @package Epfremme\ProcessQueue\Process |
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*/ |
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class ProcessorCounter |
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{ |
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const DEFAULT_CPU_COUNT = 4; |
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/** |
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* @var int |
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*/ |
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private $cpuCount; |
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/** |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return (string) $this->getCpuCount(); |
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} |
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/** |
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* @return int |
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*/ |
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public function getCpuCount() |
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{ |
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if ($this->cpuCount) { |
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return $this->cpuCount; |
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} |
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if ($this->hasProcInfo()) { |
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return $this->getProcCount(); |
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} |
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if ($this->isWindows()) { |
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return $this->getWinCount(); |
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} |
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return $this->getSysctlCount(); |
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} |
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/** |
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* @return bool |
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*/ |
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private function hasProcInfo() |
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{ |
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return is_file('/proc/cpuinfo'); |
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} |
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/** |
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* @return bool |
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*/ |
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private function isWindows() |
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{ |
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return 'WIN' == strtoupper(substr(PHP_OS, 0, 3)); |
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} |
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/** |
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* @return int |
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*/ |
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private function getSysctlCount() |
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{ |
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$process = @popen('sysctl -a', 'rb'); |
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if (false !== $process) { |
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$output = stream_get_contents($process); |
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preg_match('/hw.ncpu: (\d+)/', $output, $matches); |
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pclose($process); |
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} |
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return !empty($matches) ? intval($matches[1][0]) : self::DEFAULT_CPU_COUNT; |
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} |
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/** |
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* @return int |
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*/ |
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private function getProcCount() |
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{ |
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$cpuinfo = file_get_contents('/proc/cpuinfo'); |
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preg_match_all('/^processor/m', $cpuinfo, $matches); |
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return !empty($matches[0]) ? count($matches[0]) : self::DEFAULT_CPU_COUNT; |
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} |
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/** |
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* @return int |
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*/ |
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private function getWinCount() |
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{ |
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$process = @popen('wmic cpu get NumberOfCores', 'rb'); |
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if (false !== $process) { |
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fgets($process); |
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$count = intval(fgets($process)); |
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pclose($process); |
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} |
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return !empty($count) ? $count : self::DEFAULT_CPU_COUNT; |
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} |
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} |
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epfremmer /
process-queue
