SH-4297 WIP interesting: viewer-interesting starts loading cached scene late

dependency cleanup - removed a lot of unecessary includes

1 files changed, 79 insertions, 0 deletions

diff --git a/indra/llcommon/llpointer.h b/indra/llcommon/llpointer.h
index c827996db1..9a0726c338 100755
--- a/indra/llcommon/llpointer.h
+++ b/indra/llcommon/llpointer.h
@@ -27,6 +27,7 @@
 #define LLPOINTER_H
 
 #include "llerror.h"	// *TODO: consider eliminating this
+#include "llmutex.h"
 
 //----------------------------------------------------------------------------
 // RefCount objects should generally only be accessed by way of LLPointer<>'s
@@ -213,4 +214,82 @@ private:
 	bool mStayUnique;
 };
 
+//============================================================================
+
+// see llmemory.h for LLPointer<> definition
+
+class LL_COMMON_API LLThreadSafeRefCount
+{
+public:
+	static void initThreadSafeRefCount(); // creates sMutex
+	static void cleanupThreadSafeRefCount(); // destroys sMutex
+	
+private:
+	static LLMutex* sMutex;
+
+protected:
+	virtual ~LLThreadSafeRefCount(); // use unref()
+	
+public:
+	LLThreadSafeRefCount();
+	LLThreadSafeRefCount(const LLThreadSafeRefCount&);
+	LLThreadSafeRefCount& operator=(const LLThreadSafeRefCount& ref) 
+	{
+		if (sMutex)
+		{
+			sMutex->lock();
+		}
+		mRef = 0;
+		if (sMutex)
+		{
+			sMutex->unlock();
+		}
+		return *this;
+	}
+	
+	void ref()
+	{
+		if (sMutex) sMutex->lock();
+		mRef++; 
+		if (sMutex) sMutex->unlock();
+	} 
+
+	S32 unref()
+	{
+		llassert(mRef >= 1);
+		if (sMutex) sMutex->lock();
+		S32 res = --mRef;
+		if (sMutex) sMutex->unlock();
+		if (0 == res) 
+		{
+			delete this; 
+			return 0;
+		}
+		return res;
+	}	
+	S32 getNumRefs() const
+	{
+		return mRef;
+	}
+
+private: 
+	S32	mRef; 
+};
+
+/**
+ * intrusive pointer support for LLThreadSafeRefCount
+ * this allows you to use boost::intrusive_ptr with any LLThreadSafeRefCount-derived type
+ */
+namespace boost
+{
+	inline void intrusive_ptr_add_ref(LLThreadSafeRefCount* p) 
+	{
+		p->ref();
+	}
+
+	inline void intrusive_ptr_release(LLThreadSafeRefCount* p) 
+	{
+		p->unref(); 
+	}
+};
 #endif