[13.x] Resume sleeping when Sleep is interrupted by a signal

src/Illuminate/Support/Sleep.php

@@ -342,7 +342,14 @@ protected function goodnight()
 
         while ($while()) {
             if ($seconds > 0) {
-                sleep($seconds);
+                $secondsToSleep = $seconds;
+
+                // sleep() returns the number of seconds left to sleep if it was
+                // interrupted by a signal, such as those sent by a queue worker,
+                // so we keep sleeping until the requested duration has elapsed.
+                while ($secondsToSleep > 0) {
+                    $secondsToSleep = sleep($secondsToSleep);
+                }
 
                 $remaining = $remaining->subSeconds($seconds);
             }

tests/Support/SleepTest.php

@@ -32,6 +32,29 @@ public function testItSleepsForSeconds()
         $this->assertEqualsWithDelta(1, $end - $start, 0.03);
     }
 
+    public function testItKeepsSleepingWhenInterruptedBySignal()
+    {
+        if (! function_exists('pcntl_alarm')) {
+            $this->markTestSkipped('The pcntl extension is required.');
+        }
+
+        pcntl_async_signals(true);
+        pcntl_signal(SIGALRM, fn () => null);
+
+        // Schedule a signal that will interrupt the sleep after one second.
+        pcntl_alarm(1);
+
+        $start = microtime(true);
+        Sleep::for(2)->seconds();
+        $elapsed = microtime(true) - $start;
+
+        pcntl_alarm(0);
+        pcntl_signal(SIGALRM, SIG_DFL);
+        pcntl_async_signals(false);
+
+        $this->assertGreaterThanOrEqual(2, round($elapsed, 1));
+    }
+
     public function testCallbacksMayBeExecutedUsingThen()
     {
         $this->assertEquals(123, Sleep::for(1)->milliseconds()->then(fn () => 123));