Merge branch 'main' into marchcat/y-merge

# Conflicts:
#	autobuild.xml
#	indra/llcommon/llsys.cpp

29 files changed, 389 insertions, 816 deletions

diff --git a/indra/llcommon/classic_callback.h b/indra/llcommon/classic_callback.h
index 1ad6dbc58f..009c25d67c 100644
--- a/indra/llcommon/classic_callback.h
+++ b/indra/llcommon/classic_callback.h
@@ -119,11 +119,11 @@ public:
      * ClassicCallback must not itself be copied or moved! Once you've passed
      * get_userdata() to some API, this object MUST remain at that address.
      */
-    // However, we can't yet count on C++17 Class Template Argument Deduction,
-    // which means makeClassicCallback() is still useful, which means we MUST
-    // be able to return one to construct into caller's instance (move ctor).
-    // Possible defense: bool 'referenced' data member set by get_userdata(),
-    // with an llassert_always(! referenced) check in the move constructor.
+    // However, makeClassicCallback() is useful for deducing the CALLABLE
+    // type, which means we MUST be able to return one to construct into
+    // caller's instance (move ctor). Possible defense: bool 'referenced' data
+    // member set by get_userdata(), with an llassert_always(! referenced)
+    // check in the move constructor.
     ClassicCallback(ClassicCallback const&) = delete;
     ClassicCallback(ClassicCallback&&) = default; // delete;
     ClassicCallback& operator=(ClassicCallback const&) = delete;
diff --git a/indra/llcommon/llapp.cpp b/indra/llcommon/llapp.cpp
index b99166991f..90d0c28eb1 100644
--- a/indra/llcommon/llapp.cpp
+++ b/indra/llcommon/llapp.cpp
@@ -104,7 +104,6 @@ BOOL LLApp::sLogInSignal = FALSE;
 // Keeps track of application status
 LLScalarCond<LLApp::EAppStatus> LLApp::sStatus{LLApp::APP_STATUS_STOPPED};
 LLAppErrorHandler LLApp::sErrorHandler = NULL;
-BOOL LLApp::sErrorThreadRunning = FALSE;
 
 
 LLApp::LLApp()
@@ -787,13 +786,8 @@ void default_unix_signal_handler(int signum, siginfo_t *info, void *)
 				return;
 			}		
 			
-			// Flag status to ERROR, so thread_error does its work.
+			// Flag status to ERROR
 			LLApp::setError();
-			// Block in the signal handler until somebody says that we're done.
-			while (LLApp::sErrorThreadRunning && !LLApp::isStopped())
-			{
-				ms_sleep(10);
-			}
 			
 			if (LLApp::sLogInSignal)
 			{
diff --git a/indra/llcommon/llapp.h b/indra/llcommon/llapp.h
index c832c8b142..a892bfeb1e 100644
--- a/indra/llcommon/llapp.h
+++ b/indra/llcommon/llapp.h
@@ -291,7 +291,6 @@ protected:
 
 	static void setStatus(EAppStatus status);		// Use this to change the application status.
 	static LLScalarCond<EAppStatus> sStatus; // Reflects current application status
-	static BOOL sErrorThreadRunning; // Set while the error thread is running
 	static BOOL sDisableCrashlogger; // Let the OS handle crashes for us.
 	std::wstring mCrashReportPipeStr;  //Name of pipe to use for crash reporting.
 
diff --git a/indra/llcommon/llbase64.cpp b/indra/llcommon/llbase64.cpp
index bb85fe32a3..433b54f6f8 100644
--- a/indra/llcommon/llbase64.cpp
+++ b/indra/llcommon/llbase64.cpp
@@ -42,7 +42,7 @@ std::string LLBase64::encode(const U8* input, size_t input_size)
 		&& input_size > 0)
 	{
 		// Yes, it returns int.
-		int b64_buffer_length = apr_base64_encode_len(narrow(input_size));
+		int b64_buffer_length = apr_base64_encode_len(narrow<size_t>(input_size));
 		char* b64_buffer = new char[b64_buffer_length];
 		
 		// This is faster than apr_base64_encode() if you know
@@ -52,7 +52,7 @@ std::string LLBase64::encode(const U8* input, size_t input_size)
 		b64_buffer_length = apr_base64_encode_binary(
 			b64_buffer,
 			input,
-			narrow(input_size));
+			narrow<size_t>(input_size));
 		output.assign(b64_buffer);
 		delete[] b64_buffer;
 	}
diff --git a/indra/llcommon/llcoros.cpp b/indra/llcommon/llcoros.cpp
index 1d383f174d..c13900f74a 100644
--- a/indra/llcommon/llcoros.cpp
+++ b/indra/llcommon/llcoros.cpp
@@ -123,7 +123,7 @@ LLCoros::LLCoros():
     // Previously we used
     // boost::context::guarded_stack_allocator::default_stacksize();
     // empirically this is insufficient.
-    mStackSize(768*1024),
+    mStackSize(900*1024),
     // mCurrent does NOT own the current CoroData instance -- it simply
     // points to it. So initialize it with a no-op deleter.
     mCurrent{ [](CoroData*){} }
diff --git a/indra/llcommon/lldictionary.h b/indra/llcommon/lldictionary.h
index 5800ec5e5d..18664e340e 100644
--- a/indra/llcommon/lldictionary.h
+++ b/indra/llcommon/lldictionary.h
@@ -87,11 +87,10 @@ protected:
 	}
 	void addEntry(Index index, Entry *entry)
 	{
-		if (lookup(index))
+		if (!this->emplace(index, entry).second) 
 		{
 			LL_ERRS() << "Dictionary entry already added (attempted to add duplicate entry)" << LL_ENDL;
 		}
-		(*this)[index] = entry;
 	}
 };
 
diff --git a/indra/llcommon/llpointer.h b/indra/llcommon/llpointer.h
index f9de0c7929..64aceddf32 100644
--- a/indra/llcommon/llpointer.h
+++ b/indra/llcommon/llpointer.h
@@ -46,33 +46,32 @@
 template <class Type> class LLPointer
 {
 public:
-
-	LLPointer() : 
+	LLPointer() :
 		mPointer(NULL)
 	{
 	}
 
-	LLPointer(Type* ptr) : 
+	LLPointer(Type* ptr) :
 		mPointer(ptr)
 	{
 		ref();
 	}
 
-	LLPointer(const LLPointer<Type>& ptr) : 
+	LLPointer(const LLPointer<Type>& ptr) :
 		mPointer(ptr.mPointer)
 	{
 		ref();
 	}
 
-	// support conversion up the type hierarchy.  See Item 45 in Effective C++, 3rd Ed.
+	// Support conversion up the type hierarchy. See Item 45 in Effective C++, 3rd Ed.
 	template<typename Subclass>
-	LLPointer(const LLPointer<Subclass>& ptr) : 
+	LLPointer(const LLPointer<Subclass>& ptr) :
 		mPointer(ptr.get())
 	{
 		ref();
 	}
 
-	~LLPointer()								
+	~LLPointer()
 	{
 		unref();
 	}
@@ -83,39 +82,39 @@ public:
 	const Type&	operator*() const				{ return *mPointer; }
 	Type&	operator*()							{ return *mPointer; }
 
-	operator BOOL()  const						{ return (mPointer != NULL); }
-	operator bool()  const						{ return (mPointer != NULL); }
+	operator BOOL() const						{ return (mPointer != NULL); }
+	operator bool() const						{ return (mPointer != NULL); }
 	bool operator!() const						{ return (mPointer == NULL); }
 	bool isNull() const							{ return (mPointer == NULL); }
 	bool notNull() const						{ return (mPointer != NULL); }
 
-	operator Type*()       const				{ return mPointer; }
-	bool operator !=(Type* ptr) const           { return (mPointer != ptr); 	}
-	bool operator ==(Type* ptr) const           { return (mPointer == ptr); 	}
-	bool operator ==(const LLPointer<Type>& ptr) const           { return (mPointer == ptr.mPointer); 	}
-	bool operator < (const LLPointer<Type>& ptr) const           { return (mPointer < ptr.mPointer); 	}
-	bool operator > (const LLPointer<Type>& ptr) const           { return (mPointer > ptr.mPointer); 	}
+	operator Type*() const						{ return mPointer; }
+	bool operator !=(Type* ptr) const			{ return (mPointer != ptr); }
+	bool operator ==(Type* ptr) const			{ return (mPointer == ptr); }
+	bool operator ==(const LLPointer<Type>& ptr) const { return (mPointer == ptr.mPointer); }
+	bool operator < (const LLPointer<Type>& ptr) const { return (mPointer < ptr.mPointer); }
+	bool operator > (const LLPointer<Type>& ptr) const { return (mPointer > ptr.mPointer); }
 
-	LLPointer<Type>& operator =(Type* ptr)                   
-	{ 
+	LLPointer<Type>& operator =(Type* ptr)
+	{
 		assign(ptr);
-		return *this; 
+		return *this;
 	}
 
-	LLPointer<Type>& operator =(const LLPointer<Type>& ptr)  
-	{ 
+	LLPointer<Type>& operator =(const LLPointer<Type>& ptr)
+	{
 		assign(ptr);
-		return *this; 
+		return *this;
 	}
 
 	// support assignment up the type hierarchy. See Item 45 in Effective C++, 3rd Ed.
 	template<typename Subclass>
-	LLPointer<Type>& operator =(const LLPointer<Subclass>& ptr)  
-	{ 
+	LLPointer<Type>& operator =(const LLPointer<Subclass>& ptr)
+	{
 		assign(ptr.get());
-		return *this; 
+		return *this;
 	}
-	
+
 	// Just exchange the pointers, which will not change the reference counts.
 	static void swap(LLPointer<Type>& a, LLPointer<Type>& b)
 	{
@@ -129,16 +128,6 @@ protected:
 	void ref();                             
 	void unref();
 #else
-
-	void assign(const LLPointer<Type>& ptr)
-	{
-		if( mPointer != ptr.mPointer )
-		{
-			unref(); 
-			mPointer = ptr.mPointer;
-			ref();
-		}
-	}
 	void ref()                             
 	{ 
 		if (mPointer)
@@ -161,7 +150,18 @@ protected:
 			}
 		}
 	}
-#endif
+#endif // LL_LIBRARY_INCLUDE
+
+	void assign(const LLPointer<Type>& ptr)
+	{
+		if (mPointer != ptr.mPointer)
+		{
+			unref();
+			mPointer = ptr.mPointer;
+			ref();
+		}
+	}
+
 protected:
 	Type*	mPointer;
 };
@@ -169,18 +169,18 @@ protected:
 template <class Type> class LLConstPointer
 {
 public:
-	LLConstPointer() : 
+	LLConstPointer() :
 		mPointer(NULL)
 	{
 	}
 
-	LLConstPointer(const Type* ptr) : 
+	LLConstPointer(const Type* ptr) :
 		mPointer(ptr)
 	{
 		ref();
 	}
 
-	LLConstPointer(const LLConstPointer<Type>& ptr) : 
+	LLConstPointer(const LLConstPointer<Type>& ptr) :
 		mPointer(ptr.mPointer)
 	{
 		ref();
@@ -188,7 +188,7 @@ public:
 
 	// support conversion up the type hierarchy.  See Item 45 in Effective C++, 3rd Ed.
 	template<typename Subclass>
-	LLConstPointer(const LLConstPointer<Subclass>& ptr) : 
+	LLConstPointer(const LLConstPointer<Subclass>& ptr) :
 		mPointer(ptr.get())
 	{
 		ref();
@@ -203,55 +203,55 @@ public:
 	const Type*	operator->() const				{ return mPointer; }
 	const Type&	operator*() const				{ return *mPointer; }
 
-	operator BOOL()  const						{ return (mPointer != NULL); }
-	operator bool()  const						{ return (mPointer != NULL); }
+	operator BOOL() const						{ return (mPointer != NULL); }
+	operator bool() const						{ return (mPointer != NULL); }
 	bool operator!() const						{ return (mPointer == NULL); }
 	bool isNull() const							{ return (mPointer == NULL); }
 	bool notNull() const						{ return (mPointer != NULL); }
 
-	operator const Type*()       const			{ return mPointer; }
-	bool operator !=(const Type* ptr) const     { return (mPointer != ptr); 	}
-	bool operator ==(const Type* ptr) const     { return (mPointer == ptr); 	}
-	bool operator ==(const LLConstPointer<Type>& ptr) const           { return (mPointer == ptr.mPointer); 	}
-	bool operator < (const LLConstPointer<Type>& ptr) const           { return (mPointer < ptr.mPointer); 	}
-	bool operator > (const LLConstPointer<Type>& ptr) const           { return (mPointer > ptr.mPointer); 	}
+	operator const Type*() const				{ return mPointer; }
+	bool operator !=(const Type* ptr) const		{ return (mPointer != ptr); }
+	bool operator ==(const Type* ptr) const		{ return (mPointer == ptr); }
+	bool operator ==(const LLConstPointer<Type>& ptr) const { return (mPointer == ptr.mPointer); }
+	bool operator < (const LLConstPointer<Type>& ptr) const { return (mPointer < ptr.mPointer); }
+	bool operator > (const LLConstPointer<Type>& ptr) const { return (mPointer > ptr.mPointer); }
 
-	LLConstPointer<Type>& operator =(const Type* ptr)                   
+	LLConstPointer<Type>& operator =(const Type* ptr)
 	{
 		if( mPointer != ptr )
 		{
-			unref(); 
-			mPointer = ptr; 
+			unref();
+			mPointer = ptr;
 			ref();
 		}
 
-		return *this; 
+		return *this;
 	}
 
-	LLConstPointer<Type>& operator =(const LLConstPointer<Type>& ptr)  
-	{ 
+	LLConstPointer<Type>& operator =(const LLConstPointer<Type>& ptr)
+	{
 		if( mPointer != ptr.mPointer )
 		{
-			unref(); 
+			unref();
 			mPointer = ptr.mPointer;
 			ref();
 		}
-		return *this; 
+		return *this;
 	}
 
 	// support assignment up the type hierarchy. See Item 45 in Effective C++, 3rd Ed.
 	template<typename Subclass>
-	LLConstPointer<Type>& operator =(const LLConstPointer<Subclass>& ptr)  
-	{ 
+	LLConstPointer<Type>& operator =(const LLConstPointer<Subclass>& ptr)
+	{
 		if( mPointer != ptr.get() )
 		{
-			unref(); 
+			unref();
 			mPointer = ptr.get();
 			ref();
 		}
-		return *this; 
+		return *this;
 	}
-	
+
 	// Just exchange the pointers, which will not change the reference counts.
 	static void swap(LLConstPointer<Type>& a, LLConstPointer<Type>& b)
 	{
@@ -262,11 +262,11 @@ public:
 
 protected:
 #ifdef LL_LIBRARY_INCLUDE
-	void ref();                             
+	void ref();
 	void unref();
-#else
-	void ref()                             
-	{ 
+#else // LL_LIBRARY_INCLUDE
+	void ref()
+	{
 		if (mPointer)
 		{
 			mPointer->ref();
@@ -277,9 +277,9 @@ protected:
 	{
 		if (mPointer)
 		{
-			const Type *tempp = mPointer;
+			const Type *temp = mPointer;
 			mPointer = NULL;
-			tempp->unref();
+			temp->unref();
 			if (mPointer != NULL)
 			{
 				LL_WARNS() << "Unreference did assignment to non-NULL because of destructor" << LL_ENDL;
@@ -287,7 +287,8 @@ protected:
 			}
 		}
 	}
-#endif
+#endif // LL_LIBRARY_INCLUDE
+
 protected:
 	const Type*	mPointer;
 };
@@ -297,13 +298,13 @@ class LLCopyOnWritePointer : public LLPointer<Type>
 {
 public:
 	typedef LLCopyOnWritePointer<Type> self_t;
-    typedef LLPointer<Type> pointer_t;
-    
-	LLCopyOnWritePointer() 
+	typedef LLPointer<Type> pointer_t;
+
+	LLCopyOnWritePointer()
 	:	mStayUnique(false)
 	{}
 
-	LLCopyOnWritePointer(Type* ptr) 
+	LLCopyOnWritePointer(Type* ptr)
 	:	LLPointer<Type>(ptr),
 		mStayUnique(false)
 	{}
diff --git a/indra/llcommon/llrand.cpp b/indra/llcommon/llrand.cpp
index 33afc50cf7..0192111574 100644
--- a/indra/llcommon/llrand.cpp
+++ b/indra/llcommon/llrand.cpp
@@ -58,7 +58,9 @@
  * to restore uniform distribution.
  */
 
-static LLRandLagFib2281 gRandomGenerator(LLUUID::getRandomSeed());
+// gRandomGenerator is a stateful static object, which is therefore not
+// inherently thread-safe.
+static thread_local LLRandLagFib2281 gRandomGenerator(LLUUID::getRandomSeed());
 
 // no default implementation, only specific F64 and F32 specializations
 template <typename REAL>
@@ -71,7 +73,7 @@ inline F64 ll_internal_random<F64>()
 	// CPUs (or at least multi-threaded processes) seem to
 	// occasionally give an obviously incorrect random number -- like
 	// 5^15 or something. Sooooo, clamp it as described above.
-	F64 rv = gRandomGenerator();
+	F64 rv{ gRandomGenerator() };
 	if(!((rv >= 0.0) && (rv < 1.0))) return fmod(rv, 1.0);
 	return rv;
 }
@@ -79,7 +81,13 @@ inline F64 ll_internal_random<F64>()
 template <>
 inline F32 ll_internal_random<F32>()
 {
-    return F32(ll_internal_random<F64>());
+	// *HACK: clamp the result as described above.
+	// Per Monty, it's important to clamp using the correct fmodf() rather
+	// than expanding to F64 for fmod() and then truncating back to F32. Prior
+	// to this change, we were getting sporadic ll_frand() == 1.0 results.
+	F32 rv{ narrow<F32>(gRandomGenerator()) };
+	if(!((rv >= 0.0f) && (rv < 1.0f))) return fmodf(rv, 1.0f);
+	return rv;
 }
 
 /*------------------------------ F64 aliases -------------------------------*/
diff --git a/indra/llcommon/llrefcount.cpp b/indra/llcommon/llrefcount.cpp
index 6852b5536a..3da94e7a8d 100644
--- a/indra/llcommon/llrefcount.cpp
+++ b/indra/llcommon/llrefcount.cpp
@@ -30,7 +30,7 @@
 #include "llerror.h"
 
 // maximum reference count before sounding memory leak alarm
-const S32 gMaxRefCount = S32_MAX;
+const S32 gMaxRefCount = LL_REFCOUNT_FREE;
 
 LLRefCount::LLRefCount(const LLRefCount& other)
 :	mRef(0)
@@ -49,7 +49,7 @@ LLRefCount::LLRefCount() :
 }
 
 LLRefCount::~LLRefCount()
-{ 
+{
 	if (mRef != LL_REFCOUNT_FREE && mRef != 0)
 	{
 		LL_ERRS() << "deleting non-zero reference" << LL_ENDL;
diff --git a/indra/llcommon/llrefcount.h b/indra/llcommon/llrefcount.h
index 2080da1565..15e7175fc8 100644
--- a/indra/llcommon/llrefcount.h
+++ b/indra/llcommon/llrefcount.h
@@ -51,24 +51,20 @@ protected:
 public:
 	LLRefCount();
 
-    inline void validateRefCount() const
-    {
-        llassert(mRef > 0); // ref count below 0, likely corrupted
-        llassert(mRef < gMaxRefCount); // ref count excessive, likely memory leak
-    }
-
 	inline void ref() const
-	{ 
-		mRef++; 
-        validateRefCount();
-	} 
+	{
+		llassert(mRef != LL_REFCOUNT_FREE); // object is deleted
+		mRef++;
+		llassert(mRef < gMaxRefCount); // ref count excessive, likely memory leak
+	}
 
 	inline S32 unref() const
 	{
-        validateRefCount();
+		llassert(mRef != LL_REFCOUNT_FREE); // object is deleted
+		llassert(mRef > 0); // ref count below 1, likely corrupted
 		if (0 == --mRef)
 		{
-            mRef = LL_REFCOUNT_FREE; // set to nonsense yet recognizable value to aid in debugging
+			mRef = LL_REFCOUNT_FREE; // set to nonsense yet recognizable value to aid in debugging
 			delete this;
 			return 0;
 		}
@@ -82,8 +78,8 @@ public:
 		return mRef;
 	}
 
-private: 
-	mutable S32	mRef; 
+private:
+	mutable S32	mRef;
 };
 
 
@@ -106,7 +102,7 @@ protected:
 public:
 	LLThreadSafeRefCount();
 	LLThreadSafeRefCount(const LLThreadSafeRefCount&);
-	LLThreadSafeRefCount& operator=(const LLThreadSafeRefCount& ref) 
+	LLThreadSafeRefCount& operator=(const LLThreadSafeRefCount& ref)
 	{
 		mRef = 0;
 		return *this;
@@ -114,8 +110,8 @@ public:
 
 	void ref()
 	{
-		mRef++; 
-	} 
+		mRef++;
+	}
 
 	void unref()
 	{
@@ -136,36 +132,36 @@ public:
 		return currentVal;
 	}
 
-private: 
-	LLAtomicS32 mRef; 
+private:
+	LLAtomicS32 mRef;
 };
 
 /**
  * intrusive pointer support for LLThreadSafeRefCount
  * this allows you to use boost::intrusive_ptr with any LLThreadSafeRefCount-derived type
  */
-inline void intrusive_ptr_add_ref(LLThreadSafeRefCount* p) 
+inline void intrusive_ptr_add_ref(LLThreadSafeRefCount* p)
 {
 	p->ref();
 }
 
-inline void intrusive_ptr_release(LLThreadSafeRefCount* p) 
+inline void intrusive_ptr_release(LLThreadSafeRefCount* p)
 {
-	p->unref(); 
+	p->unref();
 }
 
 /**
  * intrusive pointer support
  * this allows you to use boost::intrusive_ptr with any LLRefCount-derived type
  */
-inline void intrusive_ptr_add_ref(LLRefCount* p) 
+inline void intrusive_ptr_add_ref(LLRefCount* p)
 {
 	p->ref();
 }
 
-inline void intrusive_ptr_release(LLRefCount* p) 
+inline void intrusive_ptr_release(LLRefCount* p)
 {
-	p->unref(); 
+	p->unref();
 }
 
 #endif
diff --git a/indra/llcommon/llsd.h b/indra/llcommon/llsd.h
index cdb9a7ed8a..8ed254919c 100644
--- a/indra/llcommon/llsd.h
+++ b/indra/llcommon/llsd.h
@@ -197,12 +197,12 @@ public:
 				  typename std::enable_if<std::is_integral<VALUE>::value &&
 										  ! std::is_same<VALUE, Boolean>::value,
 										  bool>::type = true>
-		LLSD(VALUE v): LLSD(Integer(narrow(v))) {}
+		LLSD(VALUE v): LLSD(Integer(narrow<VALUE>(v))) {}
 		// support construction from F32 et al.
 		template <typename VALUE,
 				  typename std::enable_if<std::is_floating_point<VALUE>::value,
 										  bool>::type = true>
-		LLSD(VALUE v): LLSD(Real(narrow(v))) {}
+		LLSD(VALUE v): LLSD(Real(narrow<VALUE>(v))) {}
 	//@}
 	
 	/** @name Scalar Assignment */
diff --git a/indra/llcommon/llsdserialize.cpp b/indra/llcommon/llsdserialize.cpp
index a475be6293..76171f2dfd 100644
--- a/indra/llcommon/llsdserialize.cpp
+++ b/indra/llcommon/llsdserialize.cpp
@@ -2174,7 +2174,7 @@ std::string zip_llsd(LLSD& data)
 
 	U8 out[CHUNK];
 
-	strm.avail_in = narrow(source.size());
+	strm.avail_in = narrow<size_t>(source.size());
 	strm.next_in = (U8*) source.data();
 	U8* output = NULL;
 
diff --git a/indra/llcommon/llsdserialize_xml.cpp b/indra/llcommon/llsdserialize_xml.cpp
index 38b11eb32b..db61f4ae41 100644
--- a/indra/llcommon/llsdserialize_xml.cpp
+++ b/indra/llcommon/llsdserialize_xml.cpp
@@ -196,12 +196,12 @@ S32 LLSDXMLFormatter::format_impl(const LLSD& data, std::ostream& ostr,
 			// *FIX: memory inefficient.
 			// *TODO: convert to use LLBase64
 			ostr << pre << "<binary encoding=\"base64\">";
-			int b64_buffer_length = apr_base64_encode_len(narrow(buffer.size()));
+			int b64_buffer_length = apr_base64_encode_len(narrow<size_t>(buffer.size()));
 			char* b64_buffer = new char[b64_buffer_length];
 			b64_buffer_length = apr_base64_encode_binary(
 				b64_buffer,
 				&buffer[0],
-				narrow(buffer.size()));
+				narrow<size_t>(buffer.size()));
 			ostr.write(b64_buffer, b64_buffer_length - 1);
 			delete[] b64_buffer;
 			ostr << "</binary>" << post;
@@ -404,11 +404,18 @@ S32 LLSDXMLParser::Impl::parse(std::istream& input, LLSD& data)
 		if (buffer)
 		{
 			((char*) buffer)[count ? count - 1 : 0] = '\0';
+            if (mEmitErrors)
+            {
+                LL_INFOS() << "LLSDXMLParser::Impl::parse: XML_STATUS_ERROR parsing:" << (char*)buffer << LL_ENDL;
+            }
 		}
-		if (mEmitErrors)
-		{
-		LL_INFOS() << "LLSDXMLParser::Impl::parse: XML_STATUS_ERROR parsing:" << (char*) buffer << LL_ENDL;
-		}
+        else
+        {
+            if (mEmitErrors)
+            {
+                LL_INFOS() << "LLSDXMLParser::Impl::parse: XML_STATUS_ERROR, null buffer" << LL_ENDL;
+            }
+        }
 		data = LLSD();
 		return LLSDParser::PARSE_FAILURE;
 	}
diff --git a/indra/llcommon/llstring.cpp b/indra/llcommon/llstring.cpp
index 82dc7c9f80..a746cc11ec 100644
--- a/indra/llcommon/llstring.cpp
+++ b/indra/llcommon/llstring.cpp
@@ -1406,9 +1406,17 @@ bool LLStringUtil::formatDatetime(std::string& replacement, std::string token,
 		}
 		else
 		{
+#if 0
+			// EXT-1565 : Zai Lynch, James Linden : 15/Oct/09
+			// [BSI] Feedback: Viewer clock mentions SLT, but would prefer it to show PST/PDT
 			// "slt" = Second Life Time, which is deprecated.
 			// If not utc or user local time, fallback to Pacific time
 			replacement = LLStringOps::getPacificDaylightTime() ? "PDT" : "PST";
+#else
+			// SL-20370 : Steeltoe Linden : 29/Sep/23
+			// Change "PDT" to "SLT" on menu bar
+			replacement = "SLT";
+#endif
 		}
 		return true;
 	}
diff --git a/indra/llcommon/llsys.cpp b/indra/llcommon/llsys.cpp
index f6b99b7d85..42400e90af 100644
--- a/indra/llcommon/llsys.cpp
+++ b/indra/llcommon/llsys.cpp
@@ -916,7 +916,7 @@ void LLMemoryInfo::stream(std::ostream& s) const
 	// Now stream stats
 	for (const auto& [key, value] : inMap(mStatsMap))
 	{
-		s << pfx << std::setw(narrow(key_width+1)) << (key + ':') << ' ';
+		s << pfx << std::setw(narrow<size_t>(key_width+1)) << (key + ':') << ' ';
 		if (value.isInteger())
 			s << std::setw(12) << value.asInteger();
 		else if (value.isReal())
diff --git a/indra/llcommon/llthread.cpp b/indra/llcommon/llthread.cpp
index 4eaa05c335..cd4975d9d3 100644
--- a/indra/llcommon/llthread.cpp
+++ b/indra/llcommon/llthread.cpp
@@ -113,15 +113,16 @@ LL_COMMON_API bool on_main_thread()
     return (LLThread::currentID() == main_thread());
 }
 
-LL_COMMON_API void assert_main_thread()
+LL_COMMON_API bool assert_main_thread()
 {
     auto curr = LLThread::currentID();
     auto main = main_thread();
-    if (curr != main)
-    {
-        LL_WARNS() << "Illegal execution from thread id " << curr
-            << " outside main thread " << main << LL_ENDL;
-    }
+    if (curr == main)
+        return true;
+
+    LL_WARNS() << "Illegal execution from thread id " << curr
+               << " outside main thread " << main << LL_ENDL;
+    return false;
 }
 
 // this function has become moot
diff --git a/indra/llcommon/llthread.h b/indra/llcommon/llthread.h
index 50202631e7..9f1c589fcd 100644
--- a/indra/llcommon/llthread.h
+++ b/indra/llcommon/llthread.h
@@ -152,7 +152,7 @@ public:
 
 //============================================================================
 
-extern LL_COMMON_API void assert_main_thread();
+extern LL_COMMON_API bool assert_main_thread();
 extern LL_COMMON_API bool on_main_thread();
 
 #endif // LL_LLTHREAD_H
diff --git a/indra/llcommon/lltrace.cpp b/indra/llcommon/lltrace.cpp
index ff671a8370..87457ad907 100644
--- a/indra/llcommon/lltrace.cpp
+++ b/indra/llcommon/lltrace.cpp
@@ -33,8 +33,6 @@
 namespace LLTrace
 {
 
-MemStatHandle gTraceMemStat("LLTrace");
-
 StatBase::StatBase( const char* name, const char* description ) 
 :	mName(name),
 	mDescription(description ? description : "")
@@ -65,7 +63,7 @@ void TimeBlockTreeNode::setParent( BlockTimerStatHandle* parent )
 	llassert_always(parent != mBlock);
 	llassert_always(parent != NULL);
 
-	TimeBlockTreeNode* parent_tree_node = get_thread_recorder()->getTimeBlockTreeNode(narrow(parent->getIndex()));
+	TimeBlockTreeNode* parent_tree_node = get_thread_recorder()->getTimeBlockTreeNode(narrow<size_t>(parent->getIndex()));
 	if (!parent_tree_node) return;
 
 	if (mParent)
diff --git a/indra/llcommon/lltrace.h b/indra/llcommon/lltrace.h
index 580cf0a5fd..21a5803a76 100644
--- a/indra/llcommon/lltrace.h
+++ b/indra/llcommon/lltrace.h
@@ -193,61 +193,6 @@ void add(CountStatHandle<T>& count, VALUE_T value)
 #endif
 }
 
-template<>
-class StatType<MemAccumulator::AllocationFacet>
-:	public StatType<MemAccumulator>
-{
-public:
-
-	StatType(const char* name, const char* description = "")
-	:	StatType<MemAccumulator>(name, description)
-	{}
-};
-
-template<>
-class StatType<MemAccumulator::DeallocationFacet>
-:	public StatType<MemAccumulator>
-{
-public:
-
-	StatType(const char* name, const char* description = "")
-	:	StatType<MemAccumulator>(name, description)
-	{}
-};
-
-class MemStatHandle : public StatType<MemAccumulator>
-{
-public:
-	typedef StatType<MemAccumulator> stat_t;
-	MemStatHandle(const char* name, const char* description = "")
-	:	stat_t(name, description)
-	{
-		mName = name;
-	}
-
-	void setName(const char* name)
-	{
-        LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-		mName = name;
-		setKey(name);
-	}
-
-	/*virtual*/ const char* getUnitLabel() const { return "KB"; }
-
-	StatType<MemAccumulator::AllocationFacet>& allocations() 
-	{
-        LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-		return static_cast<StatType<MemAccumulator::AllocationFacet>&>(*(StatType<MemAccumulator>*)this);
-	}
-
-	StatType<MemAccumulator::DeallocationFacet>& deallocations() 
-	{
-        LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-		return static_cast<StatType<MemAccumulator::DeallocationFacet>&>(*(StatType<MemAccumulator>*)this);
-	}
-};
-
-
 // measures effective memory footprint of specified type
 // specialize to cover different types
 template<typename T, typename IS_MEM_TRACKABLE = void, typename IS_UNITS = void>
@@ -334,33 +279,6 @@ struct MeasureMem<std::basic_string<T>, IS_MEM_TRACKABLE, IS_BYTES>
 	}
 };
 
-
-template<typename T>
-inline void claim_alloc(MemStatHandle& measurement, const T& value)
-{
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-#if LL_TRACE_ENABLED
-	auto size = MeasureMem<T>::measureFootprint(value);
-	if(size == 0) return;
-	MemAccumulator& accumulator = measurement.getCurrentAccumulator();
-	accumulator.mSize.sample(accumulator.mSize.hasValue() ? accumulator.mSize.getLastValue() + (F64)size : (F64)size);
-	accumulator.mAllocations.record(size);
-#endif
-}
-
-template<typename T>
-inline void disclaim_alloc(MemStatHandle& measurement, const T& value)
-{
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-#if LL_TRACE_ENABLED
-	auto size = MeasureMem<T>::measureFootprint(value);
-	if(size == 0) return;
-	MemAccumulator& accumulator = measurement.getCurrentAccumulator();
-	accumulator.mSize.sample(accumulator.mSize.hasValue() ? accumulator.mSize.getLastValue() - (F64)size : -(F64)size);
-	accumulator.mDeallocations.add(size);
-#endif
-}
-
 }
 
 #endif // LL_LLTRACE_H
diff --git a/indra/llcommon/lltraceaccumulators.cpp b/indra/llcommon/lltraceaccumulators.cpp
index 6bd886ae98..b5b32cba38 100644
--- a/indra/llcommon/lltraceaccumulators.cpp
+++ b/indra/llcommon/lltraceaccumulators.cpp
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file lltracesampler.cpp
  *
  * $LicenseInfo:firstyear=2001&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2012, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -32,73 +32,52 @@
 namespace LLTrace
 {
 
-extern MemStatHandle gTraceMemStat;
-
-
 ///////////////////////////////////////////////////////////////////////
 // AccumulatorBufferGroup
 ///////////////////////////////////////////////////////////////////////
 
-AccumulatorBufferGroup::AccumulatorBufferGroup() 
+AccumulatorBufferGroup::AccumulatorBufferGroup()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	claim_alloc(gTraceMemStat, mCounts.capacity() * sizeof(CountAccumulator));
-	claim_alloc(gTraceMemStat, mSamples.capacity() * sizeof(SampleAccumulator));
-	claim_alloc(gTraceMemStat, mEvents.capacity() * sizeof(EventAccumulator));
-	claim_alloc(gTraceMemStat, mStackTimers.capacity() * sizeof(TimeBlockAccumulator));
-	claim_alloc(gTraceMemStat, mMemStats.capacity() * sizeof(MemAccumulator));
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 }
 
 AccumulatorBufferGroup::AccumulatorBufferGroup(const AccumulatorBufferGroup& other)
 :	mCounts(other.mCounts),
 	mSamples(other.mSamples),
 	mEvents(other.mEvents),
-	mStackTimers(other.mStackTimers),
-	mMemStats(other.mMemStats)
+	mStackTimers(other.mStackTimers)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	claim_alloc(gTraceMemStat, mCounts.capacity() * sizeof(CountAccumulator));
-	claim_alloc(gTraceMemStat, mSamples.capacity() * sizeof(SampleAccumulator));
-	claim_alloc(gTraceMemStat, mEvents.capacity() * sizeof(EventAccumulator));
-	claim_alloc(gTraceMemStat, mStackTimers.capacity() * sizeof(TimeBlockAccumulator));
-	claim_alloc(gTraceMemStat, mMemStats.capacity() * sizeof(MemAccumulator));
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 }
 
 AccumulatorBufferGroup::~AccumulatorBufferGroup()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	disclaim_alloc(gTraceMemStat, mCounts.capacity() * sizeof(CountAccumulator));
-	disclaim_alloc(gTraceMemStat, mSamples.capacity() * sizeof(SampleAccumulator));
-	disclaim_alloc(gTraceMemStat, mEvents.capacity() * sizeof(EventAccumulator));
-	disclaim_alloc(gTraceMemStat, mStackTimers.capacity() * sizeof(TimeBlockAccumulator));
-	disclaim_alloc(gTraceMemStat, mMemStats.capacity() * sizeof(MemAccumulator));
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 }
 
 void AccumulatorBufferGroup::handOffTo(AccumulatorBufferGroup& other)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	other.mCounts.reset(&mCounts);
 	other.mSamples.reset(&mSamples);
 	other.mEvents.reset(&mEvents);
 	other.mStackTimers.reset(&mStackTimers);
-	other.mMemStats.reset(&mMemStats);
 }
 
 void AccumulatorBufferGroup::makeCurrent()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mCounts.makeCurrent();
 	mSamples.makeCurrent();
 	mEvents.makeCurrent();
 	mStackTimers.makeCurrent();
-	mMemStats.makeCurrent();
 
 	ThreadRecorder* thread_recorder = get_thread_recorder();
 	AccumulatorBuffer<TimeBlockAccumulator>& timer_accumulator_buffer = mStackTimers;
 	// update stacktimer parent pointers
 	for (size_t i = 0, end_i = mStackTimers.size(); i < end_i; i++)
 	{
-		TimeBlockTreeNode* tree_node = thread_recorder->getTimeBlockTreeNode(narrow(i));
+		TimeBlockTreeNode* tree_node = thread_recorder->getTimeBlockTreeNode(narrow<size_t>(i));
 		if (tree_node)
 		{
 			timer_accumulator_buffer[i].mParent = tree_node->mParent;
@@ -109,12 +88,11 @@ void AccumulatorBufferGroup::makeCurrent()
 //static
 void AccumulatorBufferGroup::clearCurrent()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	AccumulatorBuffer<CountAccumulator>::clearCurrent();	
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	AccumulatorBuffer<CountAccumulator>::clearCurrent();
 	AccumulatorBuffer<SampleAccumulator>::clearCurrent();
 	AccumulatorBuffer<EventAccumulator>::clearCurrent();
 	AccumulatorBuffer<TimeBlockAccumulator>::clearCurrent();
-	AccumulatorBuffer<MemAccumulator>::clearCurrent();
 }
 
 bool AccumulatorBufferGroup::isCurrent() const
@@ -124,44 +102,39 @@ bool AccumulatorBufferGroup::isCurrent() const
 
 void AccumulatorBufferGroup::append( const AccumulatorBufferGroup& other )
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mCounts.addSamples(other.mCounts, SEQUENTIAL);
 	mSamples.addSamples(other.mSamples, SEQUENTIAL);
 	mEvents.addSamples(other.mEvents, SEQUENTIAL);
-	mMemStats.addSamples(other.mMemStats, SEQUENTIAL);
 	mStackTimers.addSamples(other.mStackTimers, SEQUENTIAL);
 }
 
 void AccumulatorBufferGroup::merge( const AccumulatorBufferGroup& other)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mCounts.addSamples(other.mCounts, NON_SEQUENTIAL);
 	mSamples.addSamples(other.mSamples, NON_SEQUENTIAL);
 	mEvents.addSamples(other.mEvents, NON_SEQUENTIAL);
-	mMemStats.addSamples(other.mMemStats, NON_SEQUENTIAL);
 	// for now, hold out timers from merge, need to be displayed per thread
 	//mStackTimers.addSamples(other.mStackTimers, NON_SEQUENTIAL);
 }
 
 void AccumulatorBufferGroup::reset(AccumulatorBufferGroup* other)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mCounts.reset(other ? &other->mCounts : NULL);
 	mSamples.reset(other ? &other->mSamples : NULL);
 	mEvents.reset(other ? &other->mEvents : NULL);
 	mStackTimers.reset(other ? &other->mStackTimers : NULL);
-	mMemStats.reset(other ? &other->mMemStats : NULL);
 }
 
 void AccumulatorBufferGroup::sync()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	if (isCurrent())
 	{
 		F64SecondsImplicit time_stamp = LLTimer::getTotalSeconds();
-
 		mSamples.sync(time_stamp);
-		mMemStats.sync(time_stamp);
 	}
 }
 
@@ -197,10 +170,9 @@ F64 SampleAccumulator::mergeSumsOfSquares(const SampleAccumulator& a, const Samp
 	return a.getSumOfSquares();
 }
 
-
 void SampleAccumulator::addSamples( const SampleAccumulator& other, EBufferAppendType append_type )
 {
-    if (append_type == NON_SEQUENTIAL)
+	if (append_type == NON_SEQUENTIAL)
 	{
 		return;
 	}
@@ -299,7 +271,7 @@ void EventAccumulator::addSamples( const EventAccumulator& other, EBufferAppendT
 
 void EventAccumulator::reset( const EventAccumulator* other )
 {
-    mNumSamples = 0;
+	mNumSamples = 0;
 	mSum = 0;
 	mMin = F32(NaN);
 	mMax = F32(NaN);
@@ -308,5 +280,4 @@ void EventAccumulator::reset( const EventAccumulator* other )
 	mLastValue = other ? other->mLastValue : NaN;
 }
 
-
 }
diff --git a/indra/llcommon/lltraceaccumulators.h b/indra/llcommon/lltraceaccumulators.h
index 7267a44300..b9d577be9e 100644
--- a/indra/llcommon/lltraceaccumulators.h
+++ b/indra/llcommon/lltraceaccumulators.h
@@ -1,26 +1,26 @@
 
-/** 
+/**
  * @file lltraceaccumulators.h
  * @brief Storage for accumulating statistics
  *
  * $LicenseInfo:firstyear=2001&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2012, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -28,7 +28,6 @@
 #ifndef LL_LLTRACEACCUMULATORS_H
 #define LL_LLTRACEACCUMULATORS_H
 
-
 #include "stdtypes.h"
 #include "llpreprocessor.h"
 #include "llunits.h"
@@ -66,7 +65,7 @@ namespace LLTrace
 			: mStorageSize(0),
 			mStorage(NULL)
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			const AccumulatorBuffer& other = *getDefaultBuffer();
 			resize(sNextStorageSlot);
 			for (S32 i = 0; i < sNextStorageSlot; i++)
@@ -77,7 +76,7 @@ namespace LLTrace
 
 		~AccumulatorBuffer()
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			if (isCurrent())
 			{
 				LLThreadLocalSingletonPointer<ACCUMULATOR>::setInstance(NULL);
@@ -85,14 +84,14 @@ namespace LLTrace
 			delete[] mStorage;
 		}
 
-		LL_FORCE_INLINE ACCUMULATOR& operator[](size_t index) 
-		{ 
-			return mStorage[index]; 
+		LL_FORCE_INLINE ACCUMULATOR& operator[](size_t index)
+		{
+			return mStorage[index];
 		}
 
 		LL_FORCE_INLINE const ACCUMULATOR& operator[](size_t index) const
-		{ 
-			return mStorage[index]; 
+		{
+			return mStorage[index];
 		}
 
 
@@ -100,7 +99,7 @@ namespace LLTrace
 			: mStorageSize(0),
 			mStorage(NULL)
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			resize(sNextStorageSlot);
 			for (S32 i = 0; i < sNextStorageSlot; i++)
 			{
@@ -110,7 +109,7 @@ namespace LLTrace
 
 		void addSamples(const AccumulatorBuffer<ACCUMULATOR>& other, EBufferAppendType append_type)
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			llassert(mStorageSize >= sNextStorageSlot && other.mStorageSize >= sNextStorageSlot);
 			for (size_t i = 0; i < sNextStorageSlot; i++)
 			{
@@ -120,7 +119,7 @@ namespace LLTrace
 
 		void copyFrom(const AccumulatorBuffer<ACCUMULATOR>& other)
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			llassert(mStorageSize >= sNextStorageSlot && other.mStorageSize >= sNextStorageSlot);
 			for (size_t i = 0; i < sNextStorageSlot; i++)
 			{
@@ -130,7 +129,7 @@ namespace LLTrace
 
 		void reset(const AccumulatorBuffer<ACCUMULATOR>* other = NULL)
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			llassert(mStorageSize >= sNextStorageSlot);
 			for (size_t i = 0; i < sNextStorageSlot; i++)
 			{
@@ -140,7 +139,7 @@ namespace LLTrace
 
 		void sync(F64SecondsImplicit time_stamp)
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			llassert(mStorageSize >= sNextStorageSlot);
 			for (size_t i = 0; i < sNextStorageSlot; i++)
 			{
@@ -160,13 +159,13 @@ namespace LLTrace
 
 		static void clearCurrent()
 		{
-            LLThreadLocalSingletonPointer<ACCUMULATOR>::setInstance(NULL);
+			LLThreadLocalSingletonPointer<ACCUMULATOR>::setInstance(NULL);
 		}
 
 		// NOTE: this is not thread-safe.  We assume that slots are reserved in the main thread before any child threads are spawned
 		size_t reserveSlot()
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			size_t next_slot = sNextStorageSlot++;
 			if (next_slot >= mStorageSize)
 			{
@@ -180,7 +179,7 @@ namespace LLTrace
 
 		void resize(size_t new_size)
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			if (new_size <= mStorageSize) return;
 
 			ACCUMULATOR* old_storage = mStorage;
@@ -214,14 +213,14 @@ namespace LLTrace
 			return mStorageSize;
 		}
 
-		static size_t getNumIndices() 
+		static size_t getNumIndices()
 		{
 			return sNextStorageSlot;
 		}
 
 		static self_t* getDefaultBuffer()
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			static bool sInitialized = false;
 			if (!sInitialized)
 			{
@@ -336,7 +335,7 @@ namespace LLTrace
 
 		void sample(F64 value)
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			F64SecondsImplicit time_stamp = LLTimer::getTotalSeconds();
 
 			// store effect of last value
@@ -399,7 +398,7 @@ namespace LLTrace
 		F64		mMean,
 				mSumOfSquares;
 
-		F64SecondsImplicit	
+		F64SecondsImplicit
 				mLastSampleTimeStamp,
 				mTotalSamplingTime;
 
@@ -409,7 +408,7 @@ namespace LLTrace
 		S32		mNumSamples;
 		// distinct from mNumSamples, since we might have inherited a last value from
 		// a previous sampling period
-		bool	mHasValue;		
+		bool	mHasValue;
 	};
 
 	class CountAccumulator
@@ -457,14 +456,14 @@ namespace LLTrace
 
 	class alignas(32) TimeBlockAccumulator
 	{
-    public:
+	public:
 		typedef F64Seconds value_t;
 		static F64Seconds getDefaultValue() { return F64Seconds(0); }
 
 		typedef TimeBlockAccumulator self_t;
 
 		// fake classes that allows us to view different facets of underlying statistic
-		struct CallCountFacet 
+		struct CallCountFacet
 		{
 			typedef S32 value_t;
 		};
@@ -515,12 +514,12 @@ namespace LLTrace
 		BlockTimerStatHandle* getParent() { return mParent; }
 
 		BlockTimerStatHandle*					mBlock;
-		BlockTimerStatHandle*					mParent;	
+		BlockTimerStatHandle*					mParent;
 		std::vector<BlockTimerStatHandle*>		mChildren;
 		bool						mCollapsed;
 		bool						mNeedsSorting;
 	};
-	
+
 	struct BlockTimerStackRecord
 	{
 		class BlockTimer*	mActiveTimer;
@@ -528,65 +527,6 @@ namespace LLTrace
 		U64					mChildTime;
 	};
 
-	struct MemAccumulator
-	{
-		typedef F64Bytes value_t;
-		static F64Bytes getDefaultValue() { return F64Bytes(0); }
-
-		typedef MemAccumulator self_t;
-
-		// fake classes that allows us to view different facets of underlying statistic
-		struct AllocationFacet 
-		{
-			typedef F64Bytes value_t;
-			static F64Bytes getDefaultValue() { return F64Bytes(0); }
-		};
-
-		struct DeallocationFacet 
-		{
-			typedef F64Bytes value_t;
-			static F64Bytes getDefaultValue() { return F64Bytes(0); }
-		};
-
-		void addSamples(const MemAccumulator& other, EBufferAppendType append_type)
-		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-			mAllocations.addSamples(other.mAllocations, append_type);
-			mDeallocations.addSamples(other.mDeallocations, append_type);
-
-			if (append_type == SEQUENTIAL)
-			{
-				mSize.addSamples(other.mSize, SEQUENTIAL);
-			}
-			else
-			{
-				F64 allocation_delta(other.mAllocations.getSum() - other.mDeallocations.getSum());
-				mSize.sample(mSize.hasValue() 
-					? mSize.getLastValue() + allocation_delta 
-					: allocation_delta);
-			}
-		}
-
-		void reset(const MemAccumulator* other)
-		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-			mSize.reset(other ? &other->mSize : NULL);
-			mAllocations.reset(other ? &other->mAllocations : NULL);
-			mDeallocations.reset(other ? &other->mDeallocations : NULL);
-		}
-
-		void sync(F64SecondsImplicit time_stamp) 
-		{
-			mSize.sync(time_stamp);
-		}
-
-		bool hasValue() const			 { return mSize.hasValue(); }
-
-		SampleAccumulator	mSize;
-		EventAccumulator	mAllocations;
-		CountAccumulator	mDeallocations;
-	};
-
 	struct AccumulatorBufferGroup : public LLRefCount
 	{
 		AccumulatorBufferGroup();
@@ -607,9 +547,7 @@ namespace LLTrace
 		AccumulatorBuffer<SampleAccumulator>	mSamples;
 		AccumulatorBuffer<EventAccumulator>		mEvents;
 		AccumulatorBuffer<TimeBlockAccumulator> mStackTimers;
-		AccumulatorBuffer<MemAccumulator> 	mMemStats;
 	};
 }
 
 #endif // LL_LLTRACEACCUMULATORS_H
-
diff --git a/indra/llcommon/lltracerecording.cpp b/indra/llcommon/lltracerecording.cpp
index bb3d667a42..075e7c1d28 100644
--- a/indra/llcommon/lltracerecording.cpp
+++ b/indra/llcommon/lltracerecording.cpp
@@ -1,24 +1,24 @@
-/** 
+/**
  * @file lltracesampler.cpp
  *
  * $LicenseInfo:firstyear=2001&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2012, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -32,7 +32,7 @@
 #include "lltracethreadrecorder.h"
 #include "llthread.h"
 
-inline F64 lerp(F64 a, F64 b, F64 u) 
+inline F64 lerp(F64 a, F64 b, F64 u)
 {
 	return a + ((b - a) * u);
 }
@@ -40,34 +40,29 @@ inline F64 lerp(F64 a, F64 b, F64 u)
 namespace LLTrace
 {
 
-extern MemStatHandle gTraceMemStat;
-
 ///////////////////////////////////////////////////////////////////////
 // Recording
 ///////////////////////////////////////////////////////////////////////
 
-Recording::Recording(EPlayState state) 
+Recording::Recording(EPlayState state)
 :	mElapsedSeconds(0),
 	mActiveBuffers(NULL)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	claim_alloc(gTraceMemStat, this);
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mBuffers = new AccumulatorBufferGroup();
-	claim_alloc(gTraceMemStat, mBuffers);
 	setPlayState(state);
 }
 
 Recording::Recording( const Recording& other )
 :	mActiveBuffers(NULL)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	claim_alloc(gTraceMemStat, this);
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	*this = other;
 }
 
 Recording& Recording::operator = (const Recording& other)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	// this will allow us to seamlessly start without affecting any data we've acquired from other
 	setPlayState(PAUSED);
 
@@ -85,14 +80,11 @@ Recording& Recording::operator = (const Recording& other)
 	return *this;
 }
 
-
 Recording::~Recording()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	disclaim_alloc(gTraceMemStat, this);
-	disclaim_alloc(gTraceMemStat, mBuffers);
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 
-	// allow recording destruction without thread recorder running, 
+	// allow recording destruction without thread recorder running,
 	// otherwise thread shutdown could crash if a recording outlives the thread recorder
 	// besides, recording construction and destruction is fine without a recorder...just don't attempt to start one
 	if (isStarted() && LLTrace::get_thread_recorder() != NULL)
@@ -107,14 +99,14 @@ void Recording::update()
 #if LL_TRACE_ENABLED
 	if (isStarted())
 	{
-        LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+		LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 		mElapsedSeconds += mSamplingTimer.getElapsedTimeF64();
 
-		// must have 
-		llassert(mActiveBuffers != NULL 
+		// must have
+		llassert(mActiveBuffers != NULL
 				&& LLTrace::get_thread_recorder() != NULL);
 
-		if(!mActiveBuffers->isCurrent() && LLTrace::get_thread_recorder() != NULL)
+		if (!mActiveBuffers->isCurrent() && LLTrace::get_thread_recorder() != NULL)
 		{
 			AccumulatorBufferGroup* buffers = mBuffers.write();
 			LLTrace::get_thread_recorder()->deactivate(buffers);
@@ -128,7 +120,7 @@ void Recording::update()
 
 void Recording::handleReset()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 #if LL_TRACE_ENABLED
 	mBuffers.write()->reset();
 
@@ -139,7 +131,7 @@ void Recording::handleReset()
 
 void Recording::handleStart()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 #if LL_TRACE_ENABLED
 	mSamplingTimer.reset();
 	mBuffers.setStayUnique(true);
@@ -151,7 +143,7 @@ void Recording::handleStart()
 
 void Recording::handleStop()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 #if LL_TRACE_ENABLED
 	mElapsedSeconds += mSamplingTimer.getElapsedTimeF64();
 	// must have thread recorder running on this thread
@@ -204,7 +196,6 @@ F64Seconds Recording::getSum(const StatType<TimeBlockAccumulator::SelfTimeFacet>
 	return F64Seconds(((F64)(accumulator.mSelfTimeCounter) + (F64)(active_accumulator ? active_accumulator->mSelfTimeCounter : 0)) / (F64)LLTrace::BlockTimer::countsPerSecond());
 }
 
-
 S32 Recording::getSum(const StatType<TimeBlockAccumulator::CallCountFacet>& stat)
 {
 	update();
@@ -219,7 +210,7 @@ F64Seconds Recording::getPerSec(const StatType<TimeBlockAccumulator>& stat)
 	const TimeBlockAccumulator& accumulator = mBuffers->mStackTimers[stat.getIndex()];
 	const TimeBlockAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mStackTimers[stat.getIndex()] : NULL;
 
-	return F64Seconds((F64)(accumulator.mTotalTimeCounter + (active_accumulator ? active_accumulator->mTotalTimeCounter : 0)) 
+	return F64Seconds((F64)(accumulator.mTotalTimeCounter + (active_accumulator ? active_accumulator->mTotalTimeCounter : 0))
 				/ ((F64)LLTrace::BlockTimer::countsPerSecond() * mElapsedSeconds.value()));
 }
 
@@ -241,144 +232,9 @@ F32 Recording::getPerSec(const StatType<TimeBlockAccumulator::CallCountFacet>& s
 	return (F32)(accumulator.mCalls + (active_accumulator ? active_accumulator->mCalls : 0)) / mElapsedSeconds.value();
 }
 
-bool Recording::hasValue(const StatType<MemAccumulator>& stat)
-{
-	update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return accumulator.mSize.hasValue() || (active_accumulator && active_accumulator->mSize.hasValue() ? active_accumulator->mSize.hasValue() : false);
-}
-
-F64Kilobytes Recording::getMin(const StatType<MemAccumulator>& stat)
-{
-	update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return F64Bytes(llmin(accumulator.mSize.getMin(), (active_accumulator && active_accumulator->mSize.hasValue() ? active_accumulator->mSize.getMin() : F32_MAX)));
-}
-
-F64Kilobytes Recording::getMean(const StatType<MemAccumulator>& stat)
-{
-	update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	
-	if (active_accumulator && active_accumulator->mSize.hasValue())
-	{
-        F32 t = 0.0f;
-        S32 div = accumulator.mSize.getSampleCount() + active_accumulator->mSize.getSampleCount();
-        if (div > 0)
-        {
-            t = active_accumulator->mSize.getSampleCount() / div;
-        }
-		return F64Bytes(lerp(accumulator.mSize.getMean(), active_accumulator->mSize.getMean(), t));
-	}
-	else
-	{
-		return F64Bytes(accumulator.mSize.getMean());
-	}
-}
-
-F64Kilobytes Recording::getMax(const StatType<MemAccumulator>& stat)
-{
-    update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return F64Bytes(llmax(accumulator.mSize.getMax(), active_accumulator && active_accumulator->mSize.hasValue() ? active_accumulator->mSize.getMax() : F32_MIN));
-}
-
-F64Kilobytes Recording::getStandardDeviation(const StatType<MemAccumulator>& stat)
-{
-    update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	if (active_accumulator && active_accumulator->hasValue())
-	{
-		F64 sum_of_squares = SampleAccumulator::mergeSumsOfSquares(accumulator.mSize, active_accumulator->mSize);
-		return F64Bytes(sqrtf(sum_of_squares / (accumulator.mSize.getSamplingTime().value() + active_accumulator->mSize.getSamplingTime().value())));
-	}
-	else
-	{
-		return F64Bytes(accumulator.mSize.getStandardDeviation());
-	}
-}
-
-F64Kilobytes Recording::getLastValue(const StatType<MemAccumulator>& stat)
-{
-    update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return F64Bytes(active_accumulator ? active_accumulator->mSize.getLastValue() : accumulator.mSize.getLastValue());
-}
-
-bool Recording::hasValue(const StatType<MemAccumulator::AllocationFacet>& stat)
-{
-    update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return accumulator.mAllocations.hasValue() || (active_accumulator ? active_accumulator->mAllocations.hasValue() : false);
-}
-
-F64Kilobytes Recording::getSum(const StatType<MemAccumulator::AllocationFacet>& stat)
-{
-    update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return F64Bytes(accumulator.mAllocations.getSum() + (active_accumulator ? active_accumulator->mAllocations.getSum() : 0));
-}
-
-F64Kilobytes Recording::getPerSec(const StatType<MemAccumulator::AllocationFacet>& stat)
-{
-    update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return F64Bytes((accumulator.mAllocations.getSum() + (active_accumulator ? active_accumulator->mAllocations.getSum() : 0)) / mElapsedSeconds.value());
-}
-
-S32 Recording::getSampleCount(const StatType<MemAccumulator::AllocationFacet>& stat)
-{
-    update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return accumulator.mAllocations.getSampleCount() + (active_accumulator ? active_accumulator->mAllocations.getSampleCount() : 0);
-}
-
-bool Recording::hasValue(const StatType<MemAccumulator::DeallocationFacet>& stat)
-{
-    update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return accumulator.mDeallocations.hasValue() || (active_accumulator ? active_accumulator->mDeallocations.hasValue() : false);
-}
-
-
-F64Kilobytes Recording::getSum(const StatType<MemAccumulator::DeallocationFacet>& stat)
-{
-    update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return F64Bytes(accumulator.mDeallocations.getSum() + (active_accumulator ? active_accumulator->mDeallocations.getSum() : 0));
-}
-
-F64Kilobytes Recording::getPerSec(const StatType<MemAccumulator::DeallocationFacet>& stat)
-{
-    update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return F64Bytes((accumulator.mDeallocations.getSum() + (active_accumulator ? active_accumulator->mDeallocations.getSum() : 0)) / mElapsedSeconds.value());
-}
-
-S32 Recording::getSampleCount(const StatType<MemAccumulator::DeallocationFacet>& stat)
-{
-    update();
-	const MemAccumulator& accumulator = mBuffers->mMemStats[stat.getIndex()];
-	const MemAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mMemStats[stat.getIndex()] : NULL;
-	return accumulator.mDeallocations.getSampleCount() + (active_accumulator ? active_accumulator->mDeallocations.getSampleCount() : 0);
-}
-
 bool Recording::hasValue(const StatType<CountAccumulator>& stat)
 {
-    update();
+	update();
 	const CountAccumulator& accumulator = mBuffers->mCounts[stat.getIndex()];
 	const CountAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mCounts[stat.getIndex()] : NULL;
 	return accumulator.hasValue() || (active_accumulator ? active_accumulator->hasValue() : false);
@@ -386,7 +242,7 @@ bool Recording::hasValue(const StatType<CountAccumulator>& stat)
 
 F64 Recording::getSum(const StatType<CountAccumulator>& stat)
 {
-    update();
+	update();
 	const CountAccumulator& accumulator = mBuffers->mCounts[stat.getIndex()];
 	const CountAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mCounts[stat.getIndex()] : NULL;
 	return accumulator.getSum() + (active_accumulator ? active_accumulator->getSum() : 0);
@@ -394,7 +250,7 @@ F64 Recording::getSum(const StatType<CountAccumulator>& stat)
 
 F64 Recording::getPerSec( const StatType<CountAccumulator>& stat )
 {
-    update();
+	update();
 	const CountAccumulator& accumulator = mBuffers->mCounts[stat.getIndex()];
 	const CountAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mCounts[stat.getIndex()] : NULL;
 	F64 sum = accumulator.getSum() + (active_accumulator ? active_accumulator->getSum() : 0);
@@ -403,7 +259,7 @@ F64 Recording::getPerSec( const StatType<CountAccumulator>& stat )
 
 S32 Recording::getSampleCount( const StatType<CountAccumulator>& stat )
 {
-    update();
+	update();
 	const CountAccumulator& accumulator = mBuffers->mCounts[stat.getIndex()];
 	const CountAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mCounts[stat.getIndex()] : NULL;
 	return accumulator.getSampleCount() + (active_accumulator ? active_accumulator->getSampleCount() : 0);
@@ -411,7 +267,7 @@ S32 Recording::getSampleCount( const StatType<CountAccumulator>& stat )
 
 bool Recording::hasValue(const StatType<SampleAccumulator>& stat)
 {
-    update();
+	update();
 	const SampleAccumulator& accumulator = mBuffers->mSamples[stat.getIndex()];
 	const SampleAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mSamples[stat.getIndex()] : NULL;
 	return accumulator.hasValue() || (active_accumulator && active_accumulator->hasValue());
@@ -419,7 +275,7 @@ bool Recording::hasValue(const StatType<SampleAccumulator>& stat)
 
 F64 Recording::getMin( const StatType<SampleAccumulator>& stat )
 {
-    update();
+	update();
 	const SampleAccumulator& accumulator = mBuffers->mSamples[stat.getIndex()];
 	const SampleAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mSamples[stat.getIndex()] : NULL;
 	return llmin(accumulator.getMin(), active_accumulator && active_accumulator->hasValue() ? active_accumulator->getMin() : F32_MAX);
@@ -427,7 +283,7 @@ F64 Recording::getMin( const StatType<SampleAccumulator>& stat )
 
 F64 Recording::getMax( const StatType<SampleAccumulator>& stat )
 {
-    update();
+	update();
 	const SampleAccumulator& accumulator = mBuffers->mSamples[stat.getIndex()];
 	const SampleAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mSamples[stat.getIndex()] : NULL;
 	return llmax(accumulator.getMax(), active_accumulator && active_accumulator->hasValue() ? active_accumulator->getMax() : F32_MIN);
@@ -435,17 +291,17 @@ F64 Recording::getMax( const StatType<SampleAccumulator>& stat )
 
 F64 Recording::getMean( const StatType<SampleAccumulator>& stat )
 {
-    update();
+	update();
 	const SampleAccumulator& accumulator = mBuffers->mSamples[stat.getIndex()];
 	const SampleAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mSamples[stat.getIndex()] : NULL;
 	if (active_accumulator && active_accumulator->hasValue())
 	{
-        F32 t = 0.0f;
-        S32 div = accumulator.getSampleCount() + active_accumulator->getSampleCount();
-        if (div > 0)
-        {
-            t = active_accumulator->getSampleCount() / div;
-        }
+		F32 t = 0.0f;
+		S32 div = accumulator.getSampleCount() + active_accumulator->getSampleCount();
+		if (div > 0)
+		{
+			t = active_accumulator->getSampleCount() / div;
+		}
 		return lerp(accumulator.getMean(), active_accumulator->getMean(), t);
 	}
 	else
@@ -456,7 +312,7 @@ F64 Recording::getMean( const StatType<SampleAccumulator>& stat )
 
 F64 Recording::getStandardDeviation( const StatType<SampleAccumulator>& stat )
 {
-    update();
+	update();
 	const SampleAccumulator& accumulator = mBuffers->mSamples[stat.getIndex()];
 	const SampleAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mSamples[stat.getIndex()] : NULL;
 
@@ -473,7 +329,7 @@ F64 Recording::getStandardDeviation( const StatType<SampleAccumulator>& stat )
 
 F64 Recording::getLastValue( const StatType<SampleAccumulator>& stat )
 {
-    update();
+	update();
 	const SampleAccumulator& accumulator = mBuffers->mSamples[stat.getIndex()];
 	const SampleAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mSamples[stat.getIndex()] : NULL;
 	return (active_accumulator && active_accumulator->hasValue() ? active_accumulator->getLastValue() : accumulator.getLastValue());
@@ -481,7 +337,7 @@ F64 Recording::getLastValue( const StatType<SampleAccumulator>& stat )
 
 S32 Recording::getSampleCount( const StatType<SampleAccumulator>& stat )
 {
-    update();
+	update();
 	const SampleAccumulator& accumulator = mBuffers->mSamples[stat.getIndex()];
 	const SampleAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mSamples[stat.getIndex()] : NULL;
 	return accumulator.getSampleCount() + (active_accumulator && active_accumulator->hasValue() ? active_accumulator->getSampleCount() : 0);
@@ -489,7 +345,7 @@ S32 Recording::getSampleCount( const StatType<SampleAccumulator>& stat )
 
 bool Recording::hasValue(const StatType<EventAccumulator>& stat)
 {
-    update();
+	update();
 	const EventAccumulator& accumulator = mBuffers->mEvents[stat.getIndex()];
 	const EventAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mEvents[stat.getIndex()] : NULL;
 	return accumulator.hasValue() || (active_accumulator && active_accumulator->hasValue());
@@ -497,7 +353,7 @@ bool Recording::hasValue(const StatType<EventAccumulator>& stat)
 
 F64 Recording::getSum( const StatType<EventAccumulator>& stat)
 {
-    update();
+	update();
 	const EventAccumulator& accumulator = mBuffers->mEvents[stat.getIndex()];
 	const EventAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mEvents[stat.getIndex()] : NULL;
 	return (F64)(accumulator.getSum() + (active_accumulator && active_accumulator->hasValue() ? active_accumulator->getSum() : 0));
@@ -505,7 +361,7 @@ F64 Recording::getSum( const StatType<EventAccumulator>& stat)
 
 F64 Recording::getMin( const StatType<EventAccumulator>& stat )
 {
-    update();
+	update();
 	const EventAccumulator& accumulator = mBuffers->mEvents[stat.getIndex()];
 	const EventAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mEvents[stat.getIndex()] : NULL;
 	return llmin(accumulator.getMin(), active_accumulator && active_accumulator->hasValue() ? active_accumulator->getMin() : F32_MAX);
@@ -513,7 +369,7 @@ F64 Recording::getMin( const StatType<EventAccumulator>& stat )
 
 F64 Recording::getMax( const StatType<EventAccumulator>& stat )
 {
-    update();
+	update();
 	const EventAccumulator& accumulator = mBuffers->mEvents[stat.getIndex()];
 	const EventAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mEvents[stat.getIndex()] : NULL;
 	return llmax(accumulator.getMax(), active_accumulator && active_accumulator->hasValue() ? active_accumulator->getMax() : F32_MIN);
@@ -521,17 +377,17 @@ F64 Recording::getMax( const StatType<EventAccumulator>& stat )
 
 F64 Recording::getMean( const StatType<EventAccumulator>& stat )
 {
-    update();
+	update();
 	const EventAccumulator& accumulator = mBuffers->mEvents[stat.getIndex()];
 	const EventAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mEvents[stat.getIndex()] : NULL;
 	if (active_accumulator && active_accumulator->hasValue())
 	{
 		F32 t = 0.0f;
-        S32 div = accumulator.getSampleCount() + active_accumulator->getSampleCount();
-        if (div > 0)
-        {
-            t = active_accumulator->getSampleCount() / div;
-        }
+		S32 div = accumulator.getSampleCount() + active_accumulator->getSampleCount();
+		if (div > 0)
+		{
+			t = active_accumulator->getSampleCount() / div;
+		}
 		return lerp(accumulator.getMean(), active_accumulator->getMean(), t);
 	}
 	else
@@ -542,7 +398,7 @@ F64 Recording::getMean( const StatType<EventAccumulator>& stat )
 
 F64 Recording::getStandardDeviation( const StatType<EventAccumulator>& stat )
 {
-    update();
+	update();
 	const EventAccumulator& accumulator = mBuffers->mEvents[stat.getIndex()];
 	const EventAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mEvents[stat.getIndex()] : NULL;
 
@@ -559,7 +415,7 @@ F64 Recording::getStandardDeviation( const StatType<EventAccumulator>& stat )
 
 F64 Recording::getLastValue( const StatType<EventAccumulator>& stat )
 {
-    update();
+	update();
 	const EventAccumulator& accumulator = mBuffers->mEvents[stat.getIndex()];
 	const EventAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mEvents[stat.getIndex()] : NULL;
 	return active_accumulator ? active_accumulator->getLastValue() : accumulator.getLastValue();
@@ -567,7 +423,7 @@ F64 Recording::getLastValue( const StatType<EventAccumulator>& stat )
 
 S32 Recording::getSampleCount( const StatType<EventAccumulator>& stat )
 {
-    update();
+	update();
 	const EventAccumulator& accumulator = mBuffers->mEvents[stat.getIndex()];
 	const EventAccumulator* active_accumulator = mActiveBuffers ? &mActiveBuffers->mEvents[stat.getIndex()] : NULL;
 	return accumulator.getSampleCount() + (active_accumulator ? active_accumulator->getSampleCount() : 0);
@@ -577,7 +433,7 @@ S32 Recording::getSampleCount( const StatType<EventAccumulator>& stat )
 // PeriodicRecording
 ///////////////////////////////////////////////////////////////////////
 
-PeriodicRecording::PeriodicRecording( size_t num_periods, EPlayState state) 
+PeriodicRecording::PeriodicRecording( size_t num_periods, EPlayState state)
 :	mAutoResize(num_periods == 0),
 	mCurPeriod(0),
 	mNumRecordedPeriods(0),
@@ -585,15 +441,13 @@ PeriodicRecording::PeriodicRecording( size_t num_periods, EPlayState state)
 	// code in several methods.
 	mRecordingPeriods(num_periods ? num_periods : 1)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	setPlayState(state);
-	claim_alloc(gTraceMemStat, this);
 }
 
 PeriodicRecording::~PeriodicRecording()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	disclaim_alloc(gTraceMemStat, this);
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 }
 
 void PeriodicRecording::nextPeriod()
@@ -615,12 +469,11 @@ void PeriodicRecording::nextPeriod()
 
 void PeriodicRecording::appendRecording(Recording& recording)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	getCurRecording().appendRecording(recording);
 	nextPeriod();
 }
 
-
 void PeriodicRecording::appendPeriodicRecording( PeriodicRecording& other )
 {
 	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
@@ -693,16 +546,14 @@ F64Seconds PeriodicRecording::getDuration() const
 	return duration;
 }
 
-
 LLTrace::Recording PeriodicRecording::snapshotCurRecording() const
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	Recording recording_copy(getCurRecording());
 	recording_copy.stop();
 	return recording_copy;
 }
 
-
 Recording& PeriodicRecording::getLastRecording()
 {
 	return getPrevRecording(1);
@@ -737,19 +588,19 @@ const Recording& PeriodicRecording::getPrevRecording( size_t offset ) const
 
 void PeriodicRecording::handleStart()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	getCurRecording().start();
 }
 
 void PeriodicRecording::handleStop()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	getCurRecording().pause();
 }
 
 void PeriodicRecording::handleReset()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	getCurRecording().stop();
 
 	if (mAutoResize)
@@ -771,13 +622,13 @@ void PeriodicRecording::handleReset()
 
 void PeriodicRecording::handleSplitTo(PeriodicRecording& other)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	getCurRecording().splitTo(other.getCurRecording());
 }
 
 F64 PeriodicRecording::getPeriodMin( const StatType<EventAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/ )
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 	bool has_value = false;
@@ -792,14 +643,14 @@ F64 PeriodicRecording::getPeriodMin( const StatType<EventAccumulator>& stat, siz
 		}
 	}
 
-	return has_value 
-			? min_val 
+	return has_value
+			? min_val
 			: NaN;
 }
 
 F64 PeriodicRecording::getPeriodMax( const StatType<EventAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/ )
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 	bool has_value = false;
@@ -814,15 +665,15 @@ F64 PeriodicRecording::getPeriodMax( const StatType<EventAccumulator>& stat, siz
 		}
 	}
 
-	return has_value 
-			? max_val 
+	return has_value
+			? max_val
 			: NaN;
 }
 
 // calculates means using aggregates per period
 F64 PeriodicRecording::getPeriodMean( const StatType<EventAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/ )
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 	F64 mean = 0;
@@ -838,14 +689,14 @@ F64 PeriodicRecording::getPeriodMean( const StatType<EventAccumulator>& stat, si
 		}
 	}
 
-	return valid_period_count 
+	return valid_period_count
 			? mean / (F64)valid_period_count
 			: NaN;
 }
 
 F64 PeriodicRecording::getPeriodStandardDeviation( const StatType<EventAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/ )
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 	F64 period_mean = getPeriodMean(stat, num_periods);
@@ -870,7 +721,7 @@ F64 PeriodicRecording::getPeriodStandardDeviation( const StatType<EventAccumulat
 
 F64 PeriodicRecording::getPeriodMin( const StatType<SampleAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/ )
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 	bool has_value = false;
@@ -885,14 +736,14 @@ F64 PeriodicRecording::getPeriodMin( const StatType<SampleAccumulator>& stat, si
 		}
 	}
 
-	return has_value 
-			? min_val 
+	return has_value
+			? min_val
 			: NaN;
 }
 
 F64 PeriodicRecording::getPeriodMax(const StatType<SampleAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 	bool has_value = false;
@@ -907,15 +758,15 @@ F64 PeriodicRecording::getPeriodMax(const StatType<SampleAccumulator>& stat, siz
 		}
 	}
 
-	return has_value 
-			? max_val 
+	return has_value
+			? max_val
 			: NaN;
 }
 
 
 F64 PeriodicRecording::getPeriodMean( const StatType<SampleAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/ )
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 	S32 valid_period_count = 0;
@@ -938,7 +789,7 @@ F64 PeriodicRecording::getPeriodMean( const StatType<SampleAccumulator>& stat, s
 
 F64 PeriodicRecording::getPeriodMedian( const StatType<SampleAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/ )
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 	std::vector<F64> buf;
@@ -964,7 +815,7 @@ F64 PeriodicRecording::getPeriodMedian( const StatType<SampleAccumulator>& stat,
 
 F64 PeriodicRecording::getPeriodStandardDeviation( const StatType<SampleAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/ )
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 	F64 period_mean = getPeriodMean(stat, num_periods);
@@ -987,105 +838,13 @@ F64 PeriodicRecording::getPeriodStandardDeviation( const StatType<SampleAccumula
 			: NaN;
 }
 
-
-F64Kilobytes PeriodicRecording::getPeriodMin( const StatType<MemAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/ )
-{
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	num_periods = llmin(num_periods, getNumRecordedPeriods());
-
-	F64Kilobytes min_val(std::numeric_limits<F64>::max());
-	for (size_t i = 1; i <= num_periods; i++)
-	{
-		Recording& recording = getPrevRecording(i);
-		min_val = llmin(min_val, recording.getMin(stat));
-	}
-
-	return min_val;
-}
-
-F64Kilobytes PeriodicRecording::getPeriodMin(const MemStatHandle& stat, size_t num_periods)
-{
-	return getPeriodMin(static_cast<const StatType<MemAccumulator>&>(stat), num_periods);
-}
-
-F64Kilobytes PeriodicRecording::getPeriodMax(const StatType<MemAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/)
-{
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	num_periods = llmin(num_periods, getNumRecordedPeriods());
-
-	F64Kilobytes max_val(0.0);
-	for (size_t i = 1; i <= num_periods; i++)
-	{
-		Recording& recording = getPrevRecording(i);
-		max_val = llmax(max_val, recording.getMax(stat));
-	}
-
-	return max_val;
-}
-
-F64Kilobytes PeriodicRecording::getPeriodMax(const MemStatHandle& stat, size_t num_periods)
-{
-	return getPeriodMax(static_cast<const StatType<MemAccumulator>&>(stat), num_periods);
-}
-
-F64Kilobytes PeriodicRecording::getPeriodMean( const StatType<MemAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/ )
-{
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	num_periods = llmin(num_periods, getNumRecordedPeriods());
-
-	F64Kilobytes mean(0);
-
-	for (size_t i = 1; i <= num_periods; i++)
-	{
-		Recording& recording = getPrevRecording(i);
-		mean += recording.getMean(stat);
-	}
-
-	return mean / F64(num_periods);
-}
-
-F64Kilobytes PeriodicRecording::getPeriodMean(const MemStatHandle& stat, size_t num_periods)
-{
-	return getPeriodMean(static_cast<const StatType<MemAccumulator>&>(stat), num_periods);
-}
-
-F64Kilobytes PeriodicRecording::getPeriodStandardDeviation( const StatType<MemAccumulator>& stat, size_t num_periods /*= std::numeric_limits<size_t>::max()*/ )
-{
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
-	num_periods = llmin(num_periods, getNumRecordedPeriods());
-
-	F64Kilobytes period_mean = getPeriodMean(stat, num_periods);
-	S32 valid_period_count = 0;
-	F64 sum_of_squares = 0;
-
-	for (size_t i = 1; i <= num_periods; i++)
-	{
-		Recording& recording = getPrevRecording(i);
-		if (recording.hasValue(stat))
-		{
-			F64Kilobytes delta = recording.getMean(stat) - period_mean;
-			sum_of_squares += delta.value() * delta.value();
-			valid_period_count++;
-		}
-	}
-
-	return F64Kilobytes(valid_period_count
-			? sqrt(sum_of_squares / (F64)valid_period_count)
-			: NaN);
-}
-
-F64Kilobytes PeriodicRecording::getPeriodStandardDeviation(const MemStatHandle& stat, size_t num_periods)
-{
-	return getPeriodStandardDeviation(static_cast<const StatType<MemAccumulator>&>(stat), num_periods);
-}
-
 ///////////////////////////////////////////////////////////////////////
 // ExtendableRecording
 ///////////////////////////////////////////////////////////////////////
 
 void ExtendableRecording::extend()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	// push the data back to accepted recording
 	mAcceptedRecording.appendRecording(mPotentialRecording);
 	// flush data, so we can start from scratch
@@ -1094,76 +853,72 @@ void ExtendableRecording::extend()
 
 void ExtendableRecording::handleStart()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mPotentialRecording.start();
 }
 
 void ExtendableRecording::handleStop()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mPotentialRecording.pause();
 }
 
 void ExtendableRecording::handleReset()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mAcceptedRecording.reset();
 	mPotentialRecording.reset();
 }
 
 void ExtendableRecording::handleSplitTo(ExtendableRecording& other)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mPotentialRecording.splitTo(other.mPotentialRecording);
 }
 
-
 ///////////////////////////////////////////////////////////////////////
 // ExtendablePeriodicRecording
 ///////////////////////////////////////////////////////////////////////
 
-
-ExtendablePeriodicRecording::ExtendablePeriodicRecording() 
-:	mAcceptedRecording(0), 
+ExtendablePeriodicRecording::ExtendablePeriodicRecording()
+:	mAcceptedRecording(0),
 	mPotentialRecording(0)
 {}
 
 void ExtendablePeriodicRecording::extend()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	// push the data back to accepted recording
 	mAcceptedRecording.appendPeriodicRecording(mPotentialRecording);
 	// flush data, so we can start from scratch
 	mPotentialRecording.reset();
 }
 
-
 void ExtendablePeriodicRecording::handleStart()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mPotentialRecording.start();
 }
 
 void ExtendablePeriodicRecording::handleStop()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mPotentialRecording.pause();
 }
 
 void ExtendablePeriodicRecording::handleReset()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mAcceptedRecording.reset();
 	mPotentialRecording.reset();
 }
 
 void ExtendablePeriodicRecording::handleSplitTo(ExtendablePeriodicRecording& other)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	mPotentialRecording.splitTo(other.mPotentialRecording);
 }
 
-
 PeriodicRecording& get_frame_recording()
 {
 	static thread_local PeriodicRecording sRecording(200, PeriodicRecording::STARTED);
@@ -1174,7 +929,7 @@ PeriodicRecording& get_frame_recording()
 
 void LLStopWatchControlsMixinCommon::start()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	switch (mPlayState)
 	{
 	case STOPPED:
@@ -1196,7 +951,7 @@ void LLStopWatchControlsMixinCommon::start()
 
 void LLStopWatchControlsMixinCommon::stop()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	switch (mPlayState)
 	{
 	case STOPPED:
@@ -1216,7 +971,7 @@ void LLStopWatchControlsMixinCommon::stop()
 
 void LLStopWatchControlsMixinCommon::pause()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	switch (mPlayState)
 	{
 	case STOPPED:
@@ -1236,7 +991,7 @@ void LLStopWatchControlsMixinCommon::pause()
 
 void LLStopWatchControlsMixinCommon::unpause()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	switch (mPlayState)
 	{
 	case STOPPED:
@@ -1256,7 +1011,7 @@ void LLStopWatchControlsMixinCommon::unpause()
 
 void LLStopWatchControlsMixinCommon::resume()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	switch (mPlayState)
 	{
 	case STOPPED:
@@ -1277,7 +1032,7 @@ void LLStopWatchControlsMixinCommon::resume()
 
 void LLStopWatchControlsMixinCommon::restart()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	switch (mPlayState)
 	{
 	case STOPPED:
@@ -1301,13 +1056,13 @@ void LLStopWatchControlsMixinCommon::restart()
 
 void LLStopWatchControlsMixinCommon::reset()
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	handleReset();
 }
 
 void LLStopWatchControlsMixinCommon::setPlayState( EPlayState state )
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+	LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 	switch(state)
 	{
 	case STOPPED:
diff --git a/indra/llcommon/lltracerecording.h b/indra/llcommon/lltracerecording.h
index a6b1a67d02..61b9096ae2 100644
--- a/indra/llcommon/lltracerecording.h
+++ b/indra/llcommon/lltracerecording.h
@@ -1,25 +1,25 @@
-/** 
+/**
  * @file lltracerecording.h
  * @brief Sampling object for collecting runtime statistics originating from lltrace.
  *
  * $LicenseInfo:firstyear=2001&license=viewerlgpl$
  * Second Life Viewer Source Code
  * Copyright (C) 2012, Linden Research, Inc.
- * 
+ *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation;
  * version 2.1 of the License only.
- * 
+ *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
+ *
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
  */
@@ -112,7 +112,6 @@ private:
 	// atomically stop this object while starting the other
 	// no data can be missed in between stop and start
 	virtual void handleSplitTo(DERIVED& other) {};
-
 };
 
 namespace LLTrace
@@ -129,8 +128,6 @@ namespace LLTrace
 	template<typename T>
 	class EventStatHandle;
 
-	class MemStatHandle;
-
 	template<typename T>
 	struct RelatedTypes
 	{
@@ -152,7 +149,7 @@ namespace LLTrace
 		typedef S32 sum_t;
 	};
 
-	class Recording 
+	class Recording
 	:	public LLStopWatchControlsMixin<Recording>
 	{
 	public:
@@ -182,24 +179,6 @@ namespace LLTrace
 		F64Seconds getPerSec(const StatType<TimeBlockAccumulator::SelfTimeFacet>& stat);
 		F32 getPerSec(const StatType<TimeBlockAccumulator::CallCountFacet>& stat);
 
-		// Memory accessors
-		bool hasValue(const StatType<MemAccumulator>& stat);
-		F64Kilobytes getMin(const StatType<MemAccumulator>& stat);
-		F64Kilobytes getMean(const StatType<MemAccumulator>& stat);
-		F64Kilobytes getMax(const StatType<MemAccumulator>& stat);
-		F64Kilobytes getStandardDeviation(const StatType<MemAccumulator>& stat);
-		F64Kilobytes getLastValue(const StatType<MemAccumulator>& stat);
-
-		bool hasValue(const StatType<MemAccumulator::AllocationFacet>& stat);
-		F64Kilobytes getSum(const StatType<MemAccumulator::AllocationFacet>& stat);
-		F64Kilobytes getPerSec(const StatType<MemAccumulator::AllocationFacet>& stat);
-		S32 getSampleCount(const StatType<MemAccumulator::AllocationFacet>& stat);
-
-		bool hasValue(const StatType<MemAccumulator::DeallocationFacet>& stat);
-		F64Kilobytes getSum(const StatType<MemAccumulator::DeallocationFacet>& stat);
-		F64Kilobytes getPerSec(const StatType<MemAccumulator::DeallocationFacet>& stat);
-		S32 getSampleCount(const StatType<MemAccumulator::DeallocationFacet>& stat);
-
 		// CountStatHandle accessors
 		bool hasValue(const StatType<CountAccumulator>& stat);
 		F64 getSum(const StatType<CountAccumulator>& stat);
@@ -318,7 +297,7 @@ namespace LLTrace
 		/*virtual*/ void handleSplitTo(Recording& other);
 
 		// returns data for current thread
-		class ThreadRecorder* getThreadRecorder(); 
+		class ThreadRecorder* getThreadRecorder();
 
 		LLTimer											mSamplingTimer;
 		F64Seconds										mElapsedSeconds;
@@ -335,10 +314,10 @@ namespace LLTrace
 		~PeriodicRecording();
 
 		void nextPeriod();
-		auto getNumRecordedPeriods() 
-		{ 
+		auto getNumRecordedPeriods()
+		{
 			// current period counts if not active
-			return mNumRecordedPeriods + (isStarted() ? 0 : 1); 
+			return mNumRecordedPeriods + (isStarted() ? 0 : 1);
 		}
 
 		F64Seconds getDuration() const;
@@ -367,7 +346,7 @@ namespace LLTrace
 			}
 			return num_samples;
 		}
-        
+
 		//
 		// PERIODIC MIN
 		//
@@ -376,7 +355,7 @@ namespace LLTrace
 		template <typename T>
 		typename T::value_t getPeriodMin(const StatType<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 			bool has_value = false;
@@ -391,15 +370,15 @@ namespace LLTrace
 				}
 			}
 
-			return has_value 
-				? min_val 
+			return has_value
+				? min_val
 				: T::getDefaultValue();
 		}
 
 		template<typename T>
 		T getPeriodMin(const CountStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return T(getPeriodMin(static_cast<const StatType<CountAccumulator>&>(stat), num_periods));
 		}
 
@@ -407,7 +386,7 @@ namespace LLTrace
 		template<typename T>
 		T getPeriodMin(const SampleStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return T(getPeriodMin(static_cast<const StatType<SampleAccumulator>&>(stat), num_periods));
 		}
 
@@ -415,17 +394,14 @@ namespace LLTrace
 		template<typename T>
 		T getPeriodMin(const EventStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return T(getPeriodMin(static_cast<const StatType<EventAccumulator>&>(stat), num_periods));
 		}
 
-		F64Kilobytes getPeriodMin(const StatType<MemAccumulator>& stat, size_t num_periods = std::numeric_limits<size_t>::max());
-		F64Kilobytes getPeriodMin(const MemStatHandle& stat, size_t num_periods = std::numeric_limits<size_t>::max());
-
 		template <typename T>
 		typename RelatedTypes<typename T::value_t>::fractional_t getPeriodMinPerSec(const StatType<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 			typename RelatedTypes<typename T::value_t>::fractional_t min_val(std::numeric_limits<F64>::max());
@@ -440,7 +416,7 @@ namespace LLTrace
 		template<typename T>
 		typename RelatedTypes<T>::fractional_t getPeriodMinPerSec(const CountStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return typename RelatedTypes<T>::fractional_t(getPeriodMinPerSec(static_cast<const StatType<CountAccumulator>&>(stat), num_periods));
 		}
 
@@ -452,7 +428,7 @@ namespace LLTrace
 		template <typename T>
 		typename T::value_t getPeriodMax(const StatType<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 			bool has_value = false;
@@ -467,15 +443,15 @@ namespace LLTrace
 				}
 			}
 
-			return has_value 
-				? max_val 
+			return has_value
+				? max_val
 				: T::getDefaultValue();
 		}
 
 		template<typename T>
 		T getPeriodMax(const CountStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return T(getPeriodMax(static_cast<const StatType<CountAccumulator>&>(stat), num_periods));
 		}
 
@@ -483,7 +459,7 @@ namespace LLTrace
 		template<typename T>
 		T getPeriodMax(const SampleStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return T(getPeriodMax(static_cast<const StatType<SampleAccumulator>&>(stat), num_periods));
 		}
 
@@ -491,17 +467,14 @@ namespace LLTrace
 		template<typename T>
 		T getPeriodMax(const EventStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return T(getPeriodMax(static_cast<const StatType<EventAccumulator>&>(stat), num_periods));
 		}
 
-		F64Kilobytes getPeriodMax(const StatType<MemAccumulator>& stat, size_t num_periods = std::numeric_limits<size_t>::max());
-		F64Kilobytes getPeriodMax(const MemStatHandle& stat, size_t num_periods = std::numeric_limits<size_t>::max());
-
 		template <typename T>
 		typename RelatedTypes<typename T::value_t>::fractional_t getPeriodMaxPerSec(const StatType<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 			F64 max_val = std::numeric_limits<F64>::min();
@@ -516,7 +489,7 @@ namespace LLTrace
 		template<typename T>
 		typename RelatedTypes<T>::fractional_t getPeriodMaxPerSec(const CountStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return typename RelatedTypes<T>::fractional_t(getPeriodMaxPerSec(static_cast<const StatType<CountAccumulator>&>(stat), num_periods));
 		}
 
@@ -528,7 +501,7 @@ namespace LLTrace
 		template <typename T>
 		typename RelatedTypes<typename T::value_t>::fractional_t getPeriodMean(const StatType<T >& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 			typename RelatedTypes<typename T::value_t>::fractional_t mean(0);
@@ -549,14 +522,14 @@ namespace LLTrace
 		template<typename T>
 		typename RelatedTypes<T>::fractional_t getPeriodMean(const CountStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return typename RelatedTypes<T>::fractional_t(getPeriodMean(static_cast<const StatType<CountAccumulator>&>(stat), num_periods));
 		}
 		F64 getPeriodMean(const StatType<SampleAccumulator>& stat, size_t num_periods = std::numeric_limits<size_t>::max());
-		template<typename T> 
+		template<typename T>
 		typename RelatedTypes<T>::fractional_t getPeriodMean(const SampleStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return typename RelatedTypes<T>::fractional_t(getPeriodMean(static_cast<const StatType<SampleAccumulator>&>(stat), num_periods));
 		}
 
@@ -564,17 +537,14 @@ namespace LLTrace
 		template<typename T>
 		typename RelatedTypes<T>::fractional_t getPeriodMean(const EventStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return typename RelatedTypes<T>::fractional_t(getPeriodMean(static_cast<const StatType<EventAccumulator>&>(stat), num_periods));
 		}
 
-		F64Kilobytes getPeriodMean(const StatType<MemAccumulator>& stat, size_t num_periods = std::numeric_limits<size_t>::max());
-		F64Kilobytes getPeriodMean(const MemStatHandle& stat, size_t num_periods = std::numeric_limits<size_t>::max());
-		
 		template <typename T>
 		typename RelatedTypes<typename T::value_t>::fractional_t getPeriodMeanPerSec(const StatType<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			num_periods = llmin(num_periods, getNumRecordedPeriods());
 
 			typename RelatedTypes<typename T::value_t>::fractional_t mean = 0;
@@ -596,7 +566,7 @@ namespace LLTrace
 		template<typename T>
 		typename RelatedTypes<T>::fractional_t getPeriodMeanPerSec(const CountStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return typename RelatedTypes<T>::fractional_t(getPeriodMeanPerSec(static_cast<const StatType<CountAccumulator>&>(stat), num_periods));
 		}
 
@@ -635,10 +605,10 @@ namespace LLTrace
 
 		F64 getPeriodStandardDeviation(const StatType<SampleAccumulator>& stat, size_t num_periods = std::numeric_limits<size_t>::max());
 
-		template<typename T> 
+		template<typename T>
 		typename RelatedTypes<T>::fractional_t getPeriodStandardDeviation(const SampleStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return typename RelatedTypes<T>::fractional_t(getPeriodStandardDeviation(static_cast<const StatType<SampleAccumulator>&>(stat), num_periods));
 		}
 
@@ -646,13 +616,10 @@ namespace LLTrace
 		template<typename T>
 		typename RelatedTypes<T>::fractional_t getPeriodStandardDeviation(const EventStatHandle<T>& stat, size_t num_periods = std::numeric_limits<size_t>::max())
 		{
-            LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
+			LL_PROFILE_ZONE_SCOPED_CATEGORY_STATS;
 			return typename RelatedTypes<T>::fractional_t(getPeriodStandardDeviation(static_cast<const StatType<EventAccumulator>&>(stat), num_periods));
 		}
 
-		F64Kilobytes getPeriodStandardDeviation(const StatType<MemAccumulator>& stat, size_t num_periods = std::numeric_limits<size_t>::max());
-		F64Kilobytes getPeriodStandardDeviation(const MemStatHandle& stat, size_t num_periods = std::numeric_limits<size_t>::max());
-
 	private:
 		// implementation for LLStopWatchControlsMixin
 		/*virtual*/ void handleStart();
@@ -731,7 +698,7 @@ namespace LLTrace
 
 		PeriodicRecording& getResults()				{ return mAcceptedRecording; }
 		const PeriodicRecording& getResults() const	{return mAcceptedRecording;}
-		
+
 		void nextPeriod() { mPotentialRecording.nextPeriod(); }
 
 	private:
diff --git a/indra/llcommon/lltracethreadrecorder.cpp b/indra/llcommon/lltracethreadrecorder.cpp
index 282c454a2a..914bfb55dc 100644
--- a/indra/llcommon/lltracethreadrecorder.cpp
+++ b/indra/llcommon/lltracethreadrecorder.cpp
@@ -32,7 +32,7 @@
 
 namespace LLTrace
 {
-extern MemStatHandle gTraceMemStat;
+//extern MemStatHandle gTraceMemStat;
 
 static ThreadRecorder* sMasterThreadRecorder = NULL;
 
@@ -81,9 +81,9 @@ void ThreadRecorder::init()
 
 	BlockTimer::getRootTimeBlock().getCurrentAccumulator().mActiveCount = 1;
 
-	claim_alloc(gTraceMemStat, this);
-	claim_alloc(gTraceMemStat, mRootTimer);
-	claim_alloc(gTraceMemStat, sizeof(TimeBlockTreeNode) * mNumTimeBlockTreeNodes);
+	//claim_alloc(gTraceMemStat, this);
+	//claim_alloc(gTraceMemStat, mRootTimer);
+	//claim_alloc(gTraceMemStat, sizeof(TimeBlockTreeNode) * mNumTimeBlockTreeNodes);
 #endif
 }
 
@@ -101,9 +101,9 @@ ThreadRecorder::~ThreadRecorder()
 #if LL_TRACE_ENABLED
 	LLThreadLocalSingletonPointer<BlockTimerStackRecord>::setInstance(NULL);
 
-	disclaim_alloc(gTraceMemStat, this);
-	disclaim_alloc(gTraceMemStat, sizeof(BlockTimer));
-	disclaim_alloc(gTraceMemStat, sizeof(TimeBlockTreeNode) * mNumTimeBlockTreeNodes);
+	//disclaim_alloc(gTraceMemStat, this);
+	//disclaim_alloc(gTraceMemStat, sizeof(BlockTimer));
+	//disclaim_alloc(gTraceMemStat, sizeof(TimeBlockTreeNode) * mNumTimeBlockTreeNodes);
 
 	deactivate(&mThreadRecordingBuffers);
 
diff --git a/indra/llcommon/lluriparser.cpp b/indra/llcommon/lluriparser.cpp
index e4f229dd16..f79a98a56d 100644
--- a/indra/llcommon/lluriparser.cpp
+++ b/indra/llcommon/lluriparser.cpp
@@ -164,8 +164,10 @@ void LLUriParser::extractParts()
 #if LL_DARWIN
 typedef void(*sighandler_t)(int);
 jmp_buf return_to_normalize;
+static int sLastSignal = 0;
 void uri_signal_handler(int signal)
 {
+    sLastSignal = signal;
     // Apparently signal handler throwing an exception doesn't work.
     // This is ugly and unsafe due to not unwinding content of uriparser library,
     // but unless we have a way to catch this as NSexception, jump appears to be the only option.
@@ -179,8 +181,10 @@ S32 LLUriParser::normalize()
 	if (!mRes)
 	{
 #if LL_DARWIN
-        sighandler_t last_handler;
-        last_handler = signal(SIGILL, &uri_signal_handler);		// illegal instruction
+        sighandler_t last_sigill_handler, last_sigbus_handler;
+        last_sigill_handler = signal(SIGILL, &uri_signal_handler);		// illegal instruction
+        last_sigbus_handler = signal(SIGBUS, &uri_signal_handler);
+        
         if (setjmp(return_to_normalize))
         {
             // Issue: external library crashed via signal
@@ -194,8 +198,9 @@ S32 LLUriParser::normalize()
             // if this can be handled by NSexception, it needs to be remade
             llassert(0);
 
-            LL_WARNS() << "Uriparser crashed with SIGILL, while processing: " << mNormalizedUri << LL_ENDL;
-            signal(SIGILL, last_handler);
+            LL_WARNS() << "Uriparser crashed with " << sLastSignal << " , while processing: " << mNormalizedUri << LL_ENDL;
+            signal(SIGILL, last_sigill_handler);
+            signal(SIGBUS, last_sigbus_handler);
             return 1;
         }
 #endif
@@ -203,7 +208,8 @@ S32 LLUriParser::normalize()
         mRes = uriNormalizeSyntaxExA(&mUri, URI_NORMALIZE_SCHEME | URI_NORMALIZE_HOST);
 
 #if LL_DARWIN
-        signal(SIGILL, last_handler);
+        signal(SIGILL, last_sigill_handler);
+        signal(SIGBUS, last_sigbus_handler);
 #endif
 
         if (!mRes)
@@ -226,7 +232,7 @@ S32 LLUriParser::normalize()
         }
 	}
 
-	if(mTmpScheme)
+	if(mTmpScheme && mNormalizedUri.size() > 7)
 	{
 		mNormalizedUri = mNormalizedUri.substr(7);
 		mTmpScheme = false;
diff --git a/indra/llcommon/stdtypes.h b/indra/llcommon/stdtypes.h
index 0b43d7ad4b..3aba9dda00 100644
--- a/indra/llcommon/stdtypes.h
+++ b/indra/llcommon/stdtypes.h
@@ -156,18 +156,15 @@ typedef int intptr_t;
  * type.
  */
 // narrow_holder is a struct that accepts the passed value as its original
-// type and provides templated conversion functions to other types. Once we're
-// building with compilers that support Class Template Argument Deduction, we
-// can rename this class template 'narrow' and eliminate the narrow() factory
-// function below.
+// type and provides templated conversion functions to other types.
 template <typename FROM>
-class narrow_holder
+class narrow
 {
 private:
     FROM mValue;
 
 public:
-    narrow_holder(FROM value): mValue(value) {}
+    narrow(FROM value): mValue(value) {}
 
     /*---------------------- Narrowing unsigned to signed ----------------------*/
     template <typename TO,
@@ -207,13 +204,4 @@ public:
     }
 };
 
-/// narrow() factory function returns a narrow_holder<FROM>(), which can be
-/// implicitly converted to the target type.
-template <typename FROM>
-inline
-narrow_holder<FROM> narrow(FROM value)
-{
-    return { value };
-}
-
 #endif
diff --git a/indra/llcommon/tests/threadsafeschedule_test.cpp b/indra/llcommon/tests/threadsafeschedule_test.cpp
index c421cc7b1c..8851590189 100644
--- a/indra/llcommon/tests/threadsafeschedule_test.cpp
+++ b/indra/llcommon/tests/threadsafeschedule_test.cpp
@@ -46,11 +46,12 @@ namespace tut
         // the real time required for each push() call. Explicitly increment
         // the timestamp for each one -- but since we're passing explicit
         // timestamps, make the queue reorder them.
-        queue.push(Queue::TimeTuple(Queue::Clock::now() + 200ms, "ghi"));
+        auto now{ Queue::Clock::now() };
+        queue.push(Queue::TimeTuple(now + 200ms, "ghi"));
         // Given the various push() overloads, you have to match the type
         // exactly: conversions are ambiguous.
         queue.push("abc"s);
-        queue.push(Queue::Clock::now() + 100ms, "def");
+        queue.push(now + 100ms, "def");
         queue.close();
         auto entry = queue.pop();
         ensure_equals("failed to pop first", std::get<0>(entry), "abc"s);
diff --git a/indra/llcommon/threadpool.cpp b/indra/llcommon/threadpool.cpp
index 3a9a5a2062..c48989358e 100644
--- a/indra/llcommon/threadpool.cpp
+++ b/indra/llcommon/threadpool.cpp
@@ -60,12 +60,15 @@ struct sleepy_robin: public boost::fibers::algo::round_robin
 /*****************************************************************************
 *   ThreadPoolBase
 *****************************************************************************/
-LL::ThreadPoolBase::ThreadPoolBase(const std::string& name, size_t threads,
-                                   WorkQueueBase* queue):
+LL::ThreadPoolBase::ThreadPoolBase(const std::string& name,
+                                   size_t threads,
+                                   WorkQueueBase* queue,
+                                   bool auto_shutdown):
     super(name),
     mName("ThreadPool:" + name),
     mThreadCount(getConfiguredWidth(name, threads)),
-    mQueue(queue)
+    mQueue(queue),
+    mAutomaticShutdown(auto_shutdown)
 {}
 
 void LL::ThreadPoolBase::start()
@@ -79,6 +82,14 @@ void LL::ThreadPoolBase::start()
                 run(tname);
             });
     }
+
+    if (!mAutomaticShutdown)
+    {
+        // Some threads, like main window's might need to run a bit longer
+        // to wait for a proper shutdown message
+        return;
+    }
+
     // Listen on "LLApp", and when the app is shutting down, close the queue
     // and join the workers.
     LLEventPumps::instance().obtain("LLApp").listen(
@@ -109,8 +120,11 @@ void LL::ThreadPoolBase::close()
         mQueue->close();
         for (auto& pair: mThreads)
         {
-            LL_DEBUGS("ThreadPool") << mName << " waiting on thread " << pair.first << LL_ENDL;
-            pair.second.join();
+            if (pair.second.joinable())
+            {
+                LL_DEBUGS("ThreadPool") << mName << " waiting on thread " << pair.first << LL_ENDL;
+                pair.second.join();
+            }
         }
         LL_DEBUGS("ThreadPool") << mName << " shutdown complete" << LL_ENDL;
     }
diff --git a/indra/llcommon/threadpool.h b/indra/llcommon/threadpool.h
index 60f4a0ce1b..74056aea17 100644
--- a/indra/llcommon/threadpool.h
+++ b/indra/llcommon/threadpool.h
@@ -40,7 +40,7 @@ namespace LL
          * overrides this parameter.
          */
         ThreadPoolBase(const std::string& name, size_t threads,
-                       WorkQueueBase* queue);
+                       WorkQueueBase* queue, bool auto_shutdown = true);
         virtual ~ThreadPoolBase();
 
         /**
@@ -55,7 +55,7 @@ namespace LL
          * ThreadPool listens for application shutdown messages on the "LLApp"
          * LLEventPump. Call close() to shut down this ThreadPool early.
          */
-        void close();
+        virtual void close();
 
         std::string getName() const { return mName; }
         size_t getWidth() const { return mThreads.size(); }
@@ -87,13 +87,14 @@ namespace LL
 
     protected:
         std::unique_ptr<WorkQueueBase> mQueue;
+        std::vector<std::pair<std::string, std::thread>> mThreads;
+        bool mAutomaticShutdown;
 
     private:
         void run(const std::string& name);
 
         std::string mName;
         size_t mThreadCount;
-        std::vector<std::pair<std::string, std::thread>> mThreads;
     };
 
     /**
@@ -117,8 +118,11 @@ namespace LL
          * Constraining the queue can cause a submitter to block. Do not
          * constrain any ThreadPool accepting work from the main thread.
          */
-        ThreadPoolUsing(const std::string& name, size_t threads=1, size_t capacity=1024*1024):
-            ThreadPoolBase(name, threads, new queue_t(name, capacity))
+        ThreadPoolUsing(const std::string& name,
+                        size_t threads=1,
+                        size_t capacity=1024*1024,
+                        bool auto_shutdown = true):
+            ThreadPoolBase(name, threads, new queue_t(name, capacity), auto_shutdown)
         {}
         ~ThreadPoolUsing() override {}