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<?php |
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declare(strict_types=1); |
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namespace KevinGH\Box\Console; |
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use KevinGH\Box\Box; |
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use Symfony\Component\Console\Output\OutputInterface; |
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use Symfony\Component\Console\Style\SymfonyStyle; |
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/** |
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* @private |
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*/ |
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final class FileDescriptorManipulator |
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{ |
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/** |
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* Bumps the maximum number of open file descriptor if necessary. |
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* |
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* @return callable callable to call to restore the original maximum number of open files descriptors |
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*/ |
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public static function bumpOpenFileDescriptorLimit(int $filesCount, SymfonyStyle $io): callable |
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{ |
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$filesCount += 128; // Add a little extra for good measure |
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if (false === function_exists('posix_getrlimit') || false === function_exists('posix_setrlimit')) { |
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$io->writeln( |
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'<info>[debug] Could not check the maximum number of open file descriptors: the functions "posix_getrlimit()" and ' |
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.'"posix_setrlimit" could not be found.</info>', |
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OutputInterface::VERBOSITY_DEBUG |
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); |
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return static function (): void {}; |
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} |
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$softLimit = posix_getrlimit()['soft openfiles']; |
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$hardLimit = posix_getrlimit()['hard openfiles']; |
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if ($softLimit >= $filesCount) { |
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return static function (): void {}; |
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} |
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$io->writeln( |
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sprintf( |
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'<info>[debug] Increased the maximum number of open file descriptors from ("%s", "%s") to ("%s", "%s")' |
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.'</info>', |
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$softLimit, |
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$hardLimit, |
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$filesCount, |
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'unlimited' |
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), |
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OutputInterface::VERBOSITY_DEBUG |
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); |
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posix_setrlimit( |
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POSIX_RLIMIT_NOFILE, |
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$filesCount, |
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'unlimited' === $hardLimit ? POSIX_RLIMIT_INFINITY : $hardLimit |
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); |
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return static function () use ($io, $softLimit, $hardLimit): void { |
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if (function_exists('posix_setrlimit') && isset($softLimit, $hardLimit)) { |
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posix_setrlimit( |
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POSIX_RLIMIT_NOFILE, |
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$softLimit, |
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'unlimited' === $hardLimit ? POSIX_RLIMIT_INFINITY : $hardLimit |
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); |
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$io->writeln( |
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'<info>[debug] Restored the maximum number of open file descriptors</info>', |
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OutputInterface::VERBOSITY_DEBUG |
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); |
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} |
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}; |
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} |
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private function __construct() |
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{ |
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} |
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} |
humbug /
box
