Allow easy use of XHProf when running phpunit tests from the command line.

tests/PHPUnit/bootstrap.php

@@ -25,6 +25,32 @@ if (!defined('PIWIK_INCLUDE_SEARCH_PATH')) {
 error_reporting(E_ALL | E_NOTICE);
 @date_default_timezone_set('UTC');
 
+$useXhprof = true;
+if ($useXhprof) {
+    require_once PIWIK_INCLUDE_PATH . '/tests/lib/xhprof-0.9.2/xhprof_lib/utils/xhprof_runs.php';
+    
+    if (!isset($profilerNamespace)) {
+        $firstLineOfGitHead = file(PIWIK_INCLUDE_PATH . '/.git/HEAD');
+        $firstLineOfGitHead = $firstLineOfGitHead[0];
+        
+        $parts = explode("/", $firstLineOfGitHead);
+        $currentGitBranch = trim($parts[2]);
+        
+        $profilerNamespace = "piwik.$currentGitBranch";
+    }
+    
+    xhprof_enable(XHPROF_FLAGS_CPU + XHPROF_FLAGS_MEMORY);
+    
+    register_shutdown_function(function () use($profilerNamespace) {
+        $xhprofData = xhprof_disable();
+
+        $xhprofRuns = new \XHProfRuns_Default();
+        $runId = $xhprofRuns->save_run($xhprofData, $profilerNamespace);
+        
+        echo "\n\nPROFILER RUN URL: /tests/lib/xhprof-0.9.2/xhprof_html/?source=$profilerNamespace&run=$runId\n\n";
+    });
+}
+
 require_once PIWIK_INCLUDE_PATH . '/libs/upgradephp/upgrade.php';
 require_once PIWIK_INCLUDE_PATH . '/core/testMinimumPhpVersion.php';
 require_once PIWIK_INCLUDE_PATH . '/core/Loader.php';