added Process::getLastOutputTime() method

src/Symfony/Component/Process/CHANGELOG.md

@@ -4,7 +4,8 @@ CHANGELOG
 4.4.0
 -----
 
-* deprecated `Process::inheritEnvironmentVariables()`: env variables are always inherited.
+ * deprecated `Process::inheritEnvironmentVariables()`: env variables are always inherited.
+ * added `Process::getLastOutputTime()` method
 
 4.2.0
 -----

src/Symfony/Component/Process/Process.php

@@ -954,6 +954,16 @@ class Process implements \IteratorAggregate
         fseek($this->stderr, $this->incrementalErrorOutputOffset);
     }
 
+    /**
+     * Gets the last output time in seconds
+     *
+     * @return float|null The last output time in seconds or null if it isn't started
+     */
+    public function getLastOutputTime(): ?float
+    {
+        return $this->lastOutputTime;
+    }
+
     /**
      * Gets the command line to be executed.
      *