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初始化

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zhenhui
2026-03-02 13:44:38 +08:00
commit 05b785083c
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<?php
/**
* This file is part of webman.
*
* Licensed under The MIT License
* For full copyright and license information, please see the MIT-LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @author walkor<walkor@workerman.net>
* @copyright walkor<walkor@workerman.net>
* @link http://www.workerman.net/
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
namespace process;
use FilesystemIterator;
use RecursiveDirectoryIterator;
use RecursiveIteratorIterator;
use SplFileInfo;
use Workerman\Timer;
use Workerman\Worker;
/**
* Class FileMonitor
* @package process
*/
class Monitor
{
/**
* @var array
*/
protected $paths = [];
/**
* @var array
*/
protected $extensions = [];
/**
* @var string
*/
public static $lockFile = __DIR__ . '/../runtime/monitor.lock';
/**
* Pause monitor
* @return void
*/
public static function pause()
{
file_put_contents(static::$lockFile, time());
}
/**
* Resume monitor
* @return void
*/
public static function resume(): void
{
clearstatcache();
if (is_file(static::$lockFile)) {
unlink(static::$lockFile);
}
}
/**
* Whether monitor is paused
* @return bool
*/
public static function isPaused(): bool
{
clearstatcache();
return file_exists(static::$lockFile);
}
/**
* FileMonitor constructor.
* @param $monitorDir
* @param $monitorExtensions
* @param array $options
*/
public function __construct($monitorDir, $monitorExtensions, array $options = [])
{
static::resume();
$this->paths = (array)$monitorDir;
$this->extensions = $monitorExtensions;
if (!Worker::getAllWorkers()) {
return;
}
$disableFunctions = explode(',', ini_get('disable_functions'));
if (in_array('exec', $disableFunctions, true)) {
echo "\nMonitor file change turned off because exec() has been disabled by disable_functions setting in " . PHP_CONFIG_FILE_PATH . "/php.ini\n";
} else {
if ($options['enable_file_monitor'] ?? true) {
Timer::add(1, function () {
$this->checkAllFilesChange();
});
}
}
$memoryLimit = $this->getMemoryLimit($options['memory_limit'] ?? null);
if ($memoryLimit && ($options['enable_memory_monitor'] ?? true)) {
Timer::add(60, [$this, 'checkMemory'], [$memoryLimit]);
}
}
/**
* @param $monitorDir
* @return bool
*/
public function checkFilesChange($monitorDir): bool
{
static $lastMtime, $tooManyFilesCheck;
if (!$lastMtime) {
$lastMtime = time();
}
clearstatcache();
if (!is_dir($monitorDir)) {
if (!is_file($monitorDir)) {
return false;
}
$iterator = [new SplFileInfo($monitorDir)];
} else {
// recursive traversal directory
$dirIterator = new RecursiveDirectoryIterator($monitorDir, FilesystemIterator::SKIP_DOTS | FilesystemIterator::FOLLOW_SYMLINKS);
$iterator = new RecursiveIteratorIterator($dirIterator);
}
$count = 0;
foreach ($iterator as $file) {
$count ++;
/** var SplFileInfo $file */
if (is_dir($file->getRealPath())) {
continue;
}
// check mtime
if ($lastMtime < $file->getMTime() && in_array($file->getExtension(), $this->extensions, true)) {
$var = 0;
exec('"'.PHP_BINARY . '" -l ' . $file, $out, $var);
if ($var) {
$lastMtime = $file->getMTime();
continue;
}
$lastMtime = $file->getMTime();
echo $file . " update and reload\n";
// send SIGUSR1 signal to master process for reload
if (DIRECTORY_SEPARATOR === '/') {
posix_kill(posix_getppid(), SIGUSR1);
} else {
return true;
}
break;
}
}
if (!$tooManyFilesCheck && $count > 1000) {
echo "Monitor: There are too many files ($count files) in $monitorDir which makes file monitoring very slow\n";
$tooManyFilesCheck = 1;
}
return false;
}
/**
* @return bool
*/
public function checkAllFilesChange(): bool
{
if (static::isPaused()) {
return false;
}
foreach ($this->paths as $path) {
if ($this->checkFilesChange($path)) {
return true;
}
}
return false;
}
/**
* @param $memoryLimit
* @return void
*/
public function checkMemory($memoryLimit)
{
if (static::isPaused() || $memoryLimit <= 0) {
return;
}
$ppid = posix_getppid();
$childrenFile = "/proc/$ppid/task/$ppid/children";
if (!is_file($childrenFile) || !($children = file_get_contents($childrenFile))) {
return;
}
foreach (explode(' ', $children) as $pid) {
$pid = (int)$pid;
$statusFile = "/proc/$pid/status";
if (!is_file($statusFile) || !($status = file_get_contents($statusFile))) {
continue;
}
$mem = 0;
if (preg_match('/VmRSS\s*?:\s*?(\d+?)\s*?kB/', $status, $match)) {
$mem = $match[1];
}
$mem = (int)($mem / 1024);
if ($mem >= $memoryLimit) {
posix_kill($pid, SIGINT);
}
}
}
/**
* Get memory limit
* @return float
*/
protected function getMemoryLimit($memoryLimit)
{
if ($memoryLimit === 0) {
return 0;
}
$usePhpIni = false;
if (!$memoryLimit) {
$memoryLimit = ini_get('memory_limit');
$usePhpIni = true;
}
if ($memoryLimit == -1) {
return 0;
}
$unit = strtolower($memoryLimit[strlen($memoryLimit) - 1]);
if ($unit === 'g') {
$memoryLimit = 1024 * (int)$memoryLimit;
} else if ($unit === 'm') {
$memoryLimit = (int)$memoryLimit;
} else if ($unit === 'k') {
$memoryLimit = ((int)$memoryLimit / 1024);
} else {
$memoryLimit = ((int)$memoryLimit / (1024 * 1024));
}
if ($memoryLimit < 30) {
$memoryLimit = 30;
}
if ($usePhpIni) {
$memoryLimit = (int)(0.8 * $memoryLimit);
}
return $memoryLimit;
}
}