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diff --git a/linden/indra/newview/llfloatermemleak.cpp b/linden/indra/newview/llfloatermemleak.cpp
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+++ b/linden/indra/newview/llfloatermemleak.cpp
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+/** 
+ * @file llfloatermemleak.cpp
+ * @brief LLFloatermemleak class definition
+ *
+ * $LicenseInfo:firstyear=2007&license=viewergpl$
+ * 
+ * Copyright (c) 2007-2008, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llfloatermemleak.h"
+
+#include "lluictrlfactory.h"
+#include "llbutton.h"
+#include "llspinctrl.h"
+#include "llresmgr.h"
+
+#include "llmath.h"
+#include "llviewerwindow.h"
+
+LLFloaterMemLeak* LLFloaterMemLeak::sInstance = NULL;
+U32 LLFloaterMemLeak::sMemLeakingSpeed = 0 ; //bytes leaked per frame
+U32 LLFloaterMemLeak::sMaxLeakedMem = 0 ; //maximum allowed leaked memory
+U32 LLFloaterMemLeak::sTotalLeaked = 0 ;
+S32 LLFloaterMemLeak::sStatus = LLFloaterMemLeak::STOP ;
+BOOL LLFloaterMemLeak::sbAllocationFailed = FALSE ;
+
+LLFloaterMemLeak::LLFloaterMemLeak() : LLFloater("Memory Leaking Simulation Floater")
+{
+}
+
+LLFloaterMemLeak::~LLFloaterMemLeak()
+{
+        release() ;
+                
+        sMemLeakingSpeed = 0 ; //bytes leaked per frame
+        sMaxLeakedMem = 0 ; //maximum allowed leaked memory     
+        sInstance = NULL ;
+}
+
+void LLFloaterMemLeak::release()
+{
+        for(S32 i = 0 ; i < (S32)mLeakedMem.size() ; i++)
+        {
+                delete[] mLeakedMem[i] ;
+        }
+        mLeakedMem.clear() ;
+
+        sStatus = STOP ;
+        sTotalLeaked = 0 ;
+        sbAllocationFailed = FALSE ;
+}
+
+void LLFloaterMemLeak::stop()
+{
+        sStatus = STOP ;
+        sbAllocationFailed = TRUE ;
+}
+
+void LLFloaterMemLeak::idle()
+{
+        if(STOP == sStatus)
+        {
+                return ;
+        }
+
+        sbAllocationFailed = FALSE ;
+        
+        if(RELEASE == sStatus)
+        {
+                release() ;
+                return ;
+        }
+
+        char* p = NULL ;
+        if(sMemLeakingSpeed > 0 && sTotalLeaked < sMaxLeakedMem)
+        {
+                p = new char[sMemLeakingSpeed] ;
+
+                if(p)
+                {
+                        mLeakedMem.push_back(p) ;
+                        sTotalLeaked += sMemLeakingSpeed ;
+                }
+        }
+        if(!p)
+        {
+                sStatus = STOP ;
+                sbAllocationFailed = TRUE ;
+        }
+}
+
+//----------------------
+void LLFloaterMemLeak::onChangeLeakingSpeed(LLUICtrl* ctrl, void* userData)
+{
+        LLFloaterMemLeak *mem_leak = (LLFloaterMemLeak *)userData;              
+        if (mem_leak)
+        {
+                F32 tmp ;
+                tmp = mem_leak->childGetValue("leak_speed").asReal();
+
+                if(tmp > (F32)0xFFFFFFFF)
+                {
+                        sMemLeakingSpeed = 0xFFFFFFFF ;
+                }
+                else
+                {
+                        sMemLeakingSpeed = (U32)tmp ;
+                }
+        }
+}
+
+void LLFloaterMemLeak::onChangeMaxMemLeaking(LLUICtrl* ctrl, void* userData)
+{
+        LLFloaterMemLeak *mem_leak = (LLFloaterMemLeak *)userData;              
+        if (mem_leak)
+        {
+                F32 tmp ;
+                tmp = mem_leak->childGetValue("max_leak").asReal();
+                if(tmp > (F32)0xFFF)
+                {
+                        sMaxLeakedMem = 0xFFFFFFFF ;
+                }
+                else
+                {
+                        sMaxLeakedMem = ((U32)tmp) << 20 ;
+                }
+        }
+}
+
+void LLFloaterMemLeak::onClickStart(void* userData)
+{
+        sStatus = START ;
+}
+
+void LLFloaterMemLeak::onClickStop(void* userData)
+{
+        sStatus = STOP ;
+}
+
+void LLFloaterMemLeak::onClickRelease(void* userData)
+{
+        sStatus = RELEASE ;
+}
+
+void LLFloaterMemLeak::onClickClose(void* userData)
+{
+        if (sInstance)
+        {
+                sInstance->setVisible(FALSE);
+        }
+}
+
+//----------------------------------------------
+
+BOOL LLFloaterMemLeak::postBuild(void) 
+{
+        childSetCommitCallback("leak_speed", onChangeLeakingSpeed, this);
+        childSetCommitCallback("max_leak", onChangeMaxMemLeaking, this);
+
+        childSetAction("start_btn", onClickStart, this);
+        childSetAction("stop_btn", onClickStop, this);
+        childSetAction("release_btn", onClickRelease, this);
+        childSetAction("close_btn", onClickClose, this);
+
+        return TRUE ;
+}
+
+void LLFloaterMemLeak::draw()
+{
+        //show total memory leaked
+        if(sTotalLeaked > 0)
+        {
+                std::string bytes_string;
+                LLResMgr::getInstance()->getIntegerString(bytes_string, sTotalLeaked >> 10 );
+                childSetTextArg("total_leaked_label", "[SIZE]", bytes_string);
+        }
+        else
+        {
+                childSetTextArg("total_leaked_label", "[SIZE]", LLStringExplicit("0"));
+        }
+
+        if(sbAllocationFailed)
+        {
+                childSetTextArg("note_label_1", "[NOTE1]", LLStringExplicit("Memory leaking simulation stops. Reduce leaking speed or"));
+                childSetTextArg("note_label_2", "[NOTE2]", LLStringExplicit("increase max leaked memory, then press Start to continue."));
+        }
+        else
+        {
+                childSetTextArg("note_label_1", "[NOTE1]", LLStringExplicit(""));
+                childSetTextArg("note_label_2", "[NOTE2]", LLStringExplicit(""));
+        }
+
+        LLFloater::draw();
+}
+
+// static instance of it
+LLFloaterMemLeak* LLFloaterMemLeak::instance()
+{
+        if (!sInstance)
+        {
+                sInstance = new LLFloaterMemLeak();
+                LLUICtrlFactory::getInstance()->buildFloater(sInstance, "floater_mem_leaking.xml", NULL, FALSE);
+
+                if(sInstance)
+                {
+                        F32 a, b ;
+                        a = sInstance->childGetValue("leak_speed").asReal();
+                        if(a > (F32)(0xFFFFFFFF))
+                        {
+                                sMemLeakingSpeed = 0xFFFFFFFF ;
+                        }
+                        else
+                        {
+                                sMemLeakingSpeed = (U32)a ;
+                        }
+                        b = sInstance->childGetValue("max_leak").asReal();
+                        if(b > (F32)0xFFF)
+                        {
+                                sMaxLeakedMem = 0xFFFFFFFF ;
+                        }
+                        else
+                        {
+                                sMaxLeakedMem = ((U32)b) << 20 ;
+                        }
+
+                        sbAllocationFailed = FALSE ;
+                }
+        }
+        return sInstance ;
+}
+
+void LLFloaterMemLeak::show(void*)
+{
+        instance()->open();
+}
+
+LLFloaterMemLeak* LLFloaterMemLeak::getInstance()
+{
+        return sInstance ;
+}
+