1 files changed, 63 insertions, 0 deletions
diff --git a/vendor/react/event-loop/src/SignalsHandler.php b/vendor/react/event-loop/src/SignalsHandler.php
new file mode 100644
index 0000000..10d125d
--- /dev/null
+++ b/vendor/react/event-loop/src/SignalsHandler.php
@@ -0,0 +1,63 @@
+<?php
+
+namespace React\EventLoop;
+
+/**
+ * @internal
+ */
+final class SignalsHandler
+{
+    private $signals = array();
+
+    public function add($signal, $listener)
+    {
+        if (!isset($this->signals[$signal])) {
+            $this->signals[$signal] = array();
+        }
+
+        if (\in_array($listener, $this->signals[$signal])) {
+            return;
+        }
+
+        $this->signals[$signal][] = $listener;
+    }
+
+    public function remove($signal, $listener)
+    {
+        if (!isset($this->signals[$signal])) {
+            return;
+        }
+
+        $index = \array_search($listener, $this->signals[$signal], true);
+        unset($this->signals[$signal][$index]);
+
+        if (isset($this->signals[$signal]) && \count($this->signals[$signal]) === 0) {
+            unset($this->signals[$signal]);
+        }
+    }
+
+    public function call($signal)
+    {
+        if (!isset($this->signals[$signal])) {
+            return;
+        }
+
+        foreach ($this->signals[$signal] as $listener) {
+            \call_user_func($listener, $signal);
+        }
+    }
+
+    public function count($signal)
+    {
+        if (!isset($this->signals[$signal])) {
+            return 0;
+        }
+
+        return \count($this->signals[$signal]);
+    }
+
+    public function isEmpty()
+    {
+        return !$this->signals;
+    }
+}