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diff --git a/vendor/drush/drush/src/Commands/core/XhprofCommands.php b/vendor/drush/drush/src/Commands/core/XhprofCommands.php
new file mode 100644
index 000000000..d5cdad756
--- /dev/null
+++ b/vendor/drush/drush/src/Commands/core/XhprofCommands.php
@@ -0,0 +1,90 @@
+<?php
+
+namespace Drush\Commands\core;
+
+use Consolidation\AnnotatedCommand\AnnotationData;
+use Consolidation\AnnotatedCommand\CommandData;
+use Drush\Drush;
+use Symfony\Component\Console\Input\InputInterface;
+use Drush\Commands\DrushCommands;
+
+class XhprofCommands extends DrushCommands
+{
+
+    const XH_PROFILE_MEMORY = false;
+    const XH_PROFILE_CPU = false;
+    const XH_PROFILE_BUILTINS = true;
+
+
+  // @todo Add a command for launching the built-in web server pointing to the HTML site of xhprof.
+  // @todo Write a topic explaining how to use this.
+
+    /**
+     * @hook option *
+     *
+     * @option xh-link URL to your XHProf report site.
+     */
+    public function optionsetXhProf($options = ['xh-link' => self::REQ])
+    {
+    }
+
+    /**
+     * Enable profiling via XHProf
+     *
+     * @hook post-command *
+     */
+    public function xhprofPost($result, CommandData $commandData)
+    {
+        if (self::xhprofIsEnabled()) {
+            $namespace = 'Drush';
+            $xhprof_data = xhprof_disable();
+            $xhprof_runs = new \XHProfRuns_Default();
+            $run_id =  $xhprof_runs->save_run($xhprof_data, $namespace);
+            $namespace = 'Drush';
+            $url = Drush::config()->get('xh.link') . '/index.php?run=' . urlencode($run_id) . '&source=' . urlencode($namespace);
+            $this->logger()->notice(dt('XHProf run saved. View report at !url', ['!url' => $url]));
+        }
+    }
+
+    /**
+     * Enable profiling via XHProf
+     *
+     * @hook init *
+     */
+    public function xhprofInitialize(InputInterface $input, AnnotationData $annotationData)
+    {
+        if (self::xhprofIsEnabled($input)) {
+            $config = Drush::config()->get('xh');
+            $flags = self::xhprofFlags($config);
+            \xhprof_enable($flags);
+        }
+    }
+
+    public static function xhprofIsEnabled()
+    {
+        if (Drush::config()->get('xh.link')) {
+            if (!extension_loaded('xhprof') && !extension_loaded('tideways')) {
+                throw new \Exception(dt('You must enable the xhprof or tideways PHP extensions in your CLI PHP in order to profile.'));
+            }
+            return true;
+        }
+    }
+
+    /**
+     * Determines flags.
+     */
+    public static function xhprofFlags(array $config)
+    {
+        $flags = 0;
+        if (!(isset($config['profile-builtins']) ? $config['profile-builtins']: self::XH_PROFILE_BUILTINS)) {
+            $flags |= XHPROF_FLAGS_NO_BUILTINS;
+        }
+        if (isset($config['profile-cpu']) ? $config['profile-cpu'] : self::XH_PROFILE_CPU) {
+            $flags |= XHPROF_FLAGS_CPU;
+        }
+        if (isset($config['profile-memory']) ? $config['profile-memory'] : self::XH_PROFILE_MEMORY) {
+            $flags |= XHPROF_FLAGS_MEMORY;
+        }
+        return $flags;
+    }
+}