--- /dev/null
+++ b/include/Log.class.php
@@ -1,1 +1,205 @@
-
+<?php
+/**
+ * GitPHP Log
+ *
+ * Logging class
+ *
+ * @author Christopher Han <xiphux@gmail.com>
+ * @copyright Copyright (c) 2010 Christopher Han
+ * @package GitPHP
+ */
+
+/**
+ * Logging class
+ *
+ * @package GitPHP
+ */
+class GitPHP_Log
+{
+	/**
+	 * instance
+	 *
+	 * Stores the singleton instance
+	 *
+	 * @access protected
+	 * @static
+	 */
+	protected static $instance;
+
+	/**
+	 * enabled
+	 *
+	 * Stores whether logging is enabled
+	 *
+	 * @access protected
+	 */
+	protected $enabled = false;
+
+	/**
+	 * startTime
+	 *
+	 * Stores the starting instant
+	 *
+	 * @access protected
+	 */
+	protected $startTime;
+
+	/**
+	 * startMem
+	 *
+	 * Stores the starting memory
+	 *
+	 * @access protected
+	 */
+	protected $startMem;
+
+	/**
+	 * entries
+	 *
+	 * Stores the log entries
+	 *
+	 * @access protected
+	 */
+	protected $entries = array();
+
+	/**
+	 * GetInstance
+	 *
+	 * Returns the singleton instance
+	 *
+	 * @access public
+	 * @static
+	 * @return mixed instance of logging clas
+	 */
+	public static function GetInstance()
+	{
+		if (!self::$instance) {
+			self::$instance = new GitPHP_Log();
+		}
+
+		return self::$instance;
+	}
+
+	/**
+	 * __construct
+	 *
+	 * Constructor
+	 *
+	 * @access public
+	 * @return Log object
+	 */
+	public function __construct()
+	{
+		$this->startTime = microtime(true);
+		$this->startMem = memory_get_usage();
+
+		$this->enabled = GitPHP_Config::GetInstance()->GetValue('debug', false);
+	}
+
+	/**
+	 * SetStartTime
+	 *
+	 * Sets start time
+	 *
+	 * @access public
+	 * @param float $start starting microtime
+	 */
+	public function SetStartTime($start)
+	{
+		$this->startTime = $start;
+	}
+
+	/**
+	 * SetStartMemory
+	 *
+	 * Sets start memory
+	 *
+	 * @access public
+	 * @param integer $start starting memory
+	 */
+	public function SetStartMemory($start)
+	{
+		$this->startMem = $start;
+	}
+
+	/**
+	 * Log
+	 *
+	 * Log an entry
+	 *
+	 * @access public
+	 * @param string $message message to log
+	 */
+	public function Log($message)
+	{
+		if (!$this->enabled)
+			return;
+
+		$entry = array();
+		$entry['time'] = microtime(true);
+		$entry['mem'] = memory_get_usage();
+		$entry['msg'] = $message;
+		$this->entries[] = $entry;
+	}
+
+	/**
+	 * GetEnabled
+	 *
+	 * Gets whether logging is enabled
+	 *
+	 * @access public
+	 * @return boolean true if logging is enabled
+	 */
+	public function GetEnabled()
+	{
+		return $this->enabled;
+	}
+
+	/**
+	 * SetEnabled
+	 *
+	 * Sets whether logging is enabled
+	 *
+	 * @access public
+	 * @param boolean $enable true if logging is enabled
+	 */
+	public function SetEnabled($enable)
+	{
+		$this->enabled = $enable;
+	}
+
+	/**
+	 * GetEntries
+	 *
+	 * Calculates times and gets log entries
+	 *
+	 * @access public
+	 * @return array log entries
+	 */
+	public function GetEntries()
+	{
+		$data = array();
+	
+		if ($this->enabled) {
+			$endTime = microtime(true);
+			$endMem = memory_get_usage();
+
+			$lastTime = $this->startTime;
+			$lastMem = $this->startMem;
+
+			$data[] = '[' . $this->startTime . '] [' . $this->startMem . ' bytes] Start';
+
+			foreach ($this->entries as $entry) {
+				$data[] = '[' . $entry['time'] . '] [' . ($entry['time'] - $this->startTime) . ' sec since start] [' . ($entry['time'] - $lastTime) . ' sec since last] [' . $entry['mem'] . ' bytes] [' . ($entry['mem'] - $this->startMem) . ' bytes since start] [' . ($entry['mem'] - $lastMem) . ' bytes since last] ' . $entry['msg'];
+				$lastTime = $entry['time'];
+				$lastMem = $entry['mem'];
+			}
+
+			$data[] = '[' . $endTime . '] [' . ($endTime - $this->startTime) . ' sec since start] [' . ($endTime - $lastTime) . ' sec since last] [' . $endMem . ' bytes] [' . ($endMem - $this->startMem) . ' bytes since start] [' . ($endMem - $lastMem) . ' bytes since last] End';
+		}
+
+		return $data;
+	}
+
+}
+

--- a/include/git/GitExe.class.php
+++ b/include/git/GitExe.class.php
@@ -92,7 +92,13 @@
 		
 		$fullCommand = $this->binary . ' ' . $gitDir . ' ' . $command . ' ' . implode(' ', $args);
 
-		return shell_exec($fullCommand);
+		GitPHP_Log::GetInstance()->Log('Begin executing "' . $fullCommand . '"');
+
+		$ret = shell_exec($fullCommand);
+
+		GitPHP_Log::GetInstance()->Log('Finish executing "' . $fullCommand . '"');
+
+		return $ret;
 	}
 
 	/**

--- a/index.php
+++ b/index.php
@@ -8,6 +8,9 @@
  * @copyright Copyright (c) 2010 Christopher Han
  * @package GitPHP
  */
+
+define('GITPHP_START_TIME', microtime(true));
+define('GITPHP_START_MEM', memory_get_usage());
 
 /**
  * Define some paths
@@ -30,6 +33,8 @@
 
 require_once(GITPHP_INCLUDEDIR . 'Config.class.php');
 
+require_once(GITPHP_INCLUDEDIR . 'Log.class.php');
+
 require_once(GITPHP_GITOBJECTDIR . 'ProjectList.class.php');
 
 require_once(GITPHP_INCLUDEDIR . 'MessageException.class.php');
@@ -47,6 +52,14 @@
 	} catch (Exception $e) {
 	}
 	GitPHP_Config::GetInstance()->LoadConfig(GITPHP_CONFIGDIR . 'gitphp.conf.php');
+
+	/*
+	 * Debug
+	 */
+	if (GitPHP_Log::GetInstance()->GetEnabled()) {
+		GitPHP_Log::GetInstance()->SetStartTime(GITPHP_START_TIME);
+		GitPHP_Log::GetInstance()->SetStartMemory(GITPHP_START_MEM);
+	}
 
 	/*
 	 * Project list
@@ -83,5 +96,12 @@
 
 }
 
+if (GitPHP_Log::GetInstance()->GetEnabled()) {
+	$entries = GitPHP_Log::GetInstance()->GetEntries();
+	foreach ($entries as $logline) {
+		echo "\n" . $logline;
+	}
+}
+
 ?>