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N°8910 - Upgrade Symfony packages (#811)
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@@ -13,8 +13,21 @@ namespace Symfony\Component\Console\SignalRegistry;
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final class SignalRegistry
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{
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/**
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* @var array<int, array<callable>>
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*/
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private array $signalHandlers = [];
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/**
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* @var array<array<int, array<callable>>>
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*/
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private array $stack = [];
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/**
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* @var array<int, callable|int|string>
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*/
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private array $originalHandlers = [];
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public function __construct()
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{
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if (\function_exists('pcntl_async_signals')) {
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@@ -24,17 +37,21 @@ final class SignalRegistry
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public function register(int $signal, callable $signalHandler): void
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{
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if (!isset($this->signalHandlers[$signal])) {
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$previousCallback = pcntl_signal_get_handler($signal);
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$previous = pcntl_signal_get_handler($signal);
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if (\is_callable($previousCallback)) {
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$this->signalHandlers[$signal][] = $previousCallback;
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if (!isset($this->originalHandlers[$signal])) {
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$this->originalHandlers[$signal] = $previous;
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}
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if (!isset($this->signalHandlers[$signal])) {
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if (\is_callable($previous) && [$this, 'handle'] !== $previous) {
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$this->signalHandlers[$signal][] = $previous;
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}
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}
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$this->signalHandlers[$signal][] = $signalHandler;
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pcntl_signal($signal, $this->handle(...));
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pcntl_signal($signal, [$this, 'handle']);
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}
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public static function isSupported(): bool
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@@ -54,4 +71,38 @@ final class SignalRegistry
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$signalHandler($signal, $hasNext);
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}
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}
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/**
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* Pushes the current active handlers onto the stack and clears the active list.
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*
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* This prepares the registry for a new set of handlers within a specific scope.
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*
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* @internal
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*/
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public function pushCurrentHandlers(): void
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{
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$this->stack[] = $this->signalHandlers;
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$this->signalHandlers = [];
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}
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/**
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* Restores the previous handlers from the stack, making them active.
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*
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* This also restores the original OS-level signal handler if no
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* more handlers are registered for a signal that was just popped.
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*
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* @internal
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*/
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public function popPreviousHandlers(): void
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{
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$popped = $this->signalHandlers;
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$this->signalHandlers = array_pop($this->stack) ?? [];
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// Restore OS handler if no more Symfony handlers for this signal
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foreach ($popped as $signal => $handlers) {
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if (!($this->signalHandlers[$signal] ?? false) && isset($this->originalHandlers[$signal])) {
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pcntl_signal($signal, $this->originalHandlers[$signal]);
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}
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}
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}
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}
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