From a7feda2da8829522c5232b4b945dcb9b1e91245c Mon Sep 17 00:00:00 2001
From: Luo Jinghua <sunmoon1997@gmail.com>
Date: Sat, 19 Nov 2011 13:10:32 +0800
Subject: SexyAppFramework: Fixed the input driver factory leak

---
 .../source/SexyAppFramework/InputDriverFactory.cpp | 52 +++++++++++++++++++---
 .../source/SexyAppFramework/InputDriverFactory.h   | 10 +++--
 2 files changed, 54 insertions(+), 8 deletions(-)

diff --git a/osframework/source/SexyAppFramework/InputDriverFactory.cpp b/osframework/source/SexyAppFramework/InputDriverFactory.cpp
index 8be3c15..fad538f 100644
--- a/osframework/source/SexyAppFramework/InputDriverFactory.cpp
+++ b/osframework/source/SexyAppFramework/InputDriverFactory.cpp
@@ -21,13 +21,55 @@ InputDriverFactory::~InputDriverFactory ()
 {
 }
 
-InputDriverFactory*  InputDriverFactory::GetInputDriverFactory ()
+namespace Sexy {
+
+class StaticInputDriverFactory
 {
-	static InputDriverFactory  * theInputDriverFactory;
+public:
+	struct StaticData {
+		InputDriverFactory* mFactory;
+		bool mDone;
+	};
+
+	StaticInputDriverFactory(StaticData* data)
+	{
+		mData = data;
+	}
+
+	InputDriverFactory* Get(StaticData* data)
+	{
+		if (data->mDone)
+			return 0;
+
+		if (data->mFactory)
+			return data->mFactory;
+
+		data->mFactory = new InputDriverFactory;
+		return data->mFactory;
+	}
+
+	~StaticInputDriverFactory()
+	{
+		if (!mData)
+			return;
+
+		mData->mDone = true;
+		if (mData->mFactory)
+			delete mData->mFactory;
+	}
 
-	if (!theInputDriverFactory)
-		theInputDriverFactory = new InputDriverFactory ();
-	return theInputDriverFactory;
+private:
+	StaticData* mData;
+};
+
+static StaticInputDriverFactory::StaticData aData;
+static StaticInputDriverFactory inputDriverFactory(&aData);
+
+}
+
+InputDriverFactory* InputDriverFactory::GetInputDriverFactory ()
+{
+	return inputDriverFactory.Get(&aData);
 }
 
 /* This is a hack that preventing gcc from striping drivers out of
diff --git a/osframework/source/SexyAppFramework/InputDriverFactory.h b/osframework/source/SexyAppFramework/InputDriverFactory.h
index fbe5158..6808a2d 100644
--- a/osframework/source/SexyAppFramework/InputDriverFactory.h
+++ b/osframework/source/SexyAppFramework/InputDriverFactory.h
@@ -29,9 +29,11 @@ class InputDriverFactory: public DriverFactory
 	static InputDriverFactory*  GetInputDriverFactory ();
 
  private:
-	void		     Load();
+	void		            Load();
 
  private:
+	friend class StaticInputDriverFactory;
+
 	InputDriverFactory ();
 	~InputDriverFactory ();
 };
@@ -45,7 +47,8 @@ class InputDriverRegistor
 		InputDriverFactory* factory;
 
 		factory = InputDriverFactory::GetInputDriverFactory ();
-		factory->AddDriver (mDriver);
+		if (factory)
+			factory->AddDriver (mDriver);
 	}
 
 	~InputDriverRegistor()
@@ -53,7 +56,8 @@ class InputDriverRegistor
 		InputDriverFactory* factory;
 
 		factory = InputDriverFactory::GetInputDriverFactory ();
-		factory->RemoveDriver (mDriver);
+		if (factory)
+			factory->RemoveDriver (mDriver);
 	}
 
  private:
-- 
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