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diff --git a/linden/indra/llcommon/llsys.h b/linden/indra/llcommon/llsys.h
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+/** 
+ * @file llsys.h
+ * @brief System information debugging classes.
+ *
+ * Copyright (c) 2001-2007, Linden Research, Inc.
+ * 
+ * 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://secondlife.com/developers/opensource/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://secondlife.com/developers/opensource/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.
+ */
+
+#ifndef LL_SYS_H
+#define LL_SYS_H
+
+//
+// The LLOSInfo, LLCPUInfo, and LLMemoryInfo classes are essentially
+// the same, but query different machine subsystems. Here's how you
+// use an LLCPUInfo object:
+//
+//  LLCPUInfo info;
+//  llinfos << info << llendl;
+//
+
+#include <iosfwd>
+#include <string>
+
+class LLOSInfo
+{
+public:
+        LLOSInfo();
+        void stream(std::ostream& s) const;
+
+        const std::string& getOSString() const;
+
+        S32 mMajorVer;
+        S32 mMinorVer;
+        S32 mBuild;
+
+#ifndef LL_WINDOWS
+        static S32 getMaxOpenFiles();
+#endif
+
+        static U32 getProcessVirtualSizeKB();
+        static U32 getProcessResidentSizeKB();
+private:
+        std::string mOSString;
+};
+
+
+class LLCPUInfo
+{
+public:
+        LLCPUInfo();    
+        void stream(std::ostream& s) const;
+
+        std::string getCPUString() const;
+        std::string getCPUStringTerse() const;
+
+        BOOL  hasSSE() const    { return mHasSSE; }
+        BOOL  hasSSE2() const   { return mHasSSE2; }
+        S32       getMhz() const        { return mCPUMhz; }
+
+        // Family is "AMD Duron" or "Intel Pentium Pro"
+        const std::string& getFamily() const { return mFamily; }
+
+private:
+        BOOL mHasSSE;
+        BOOL mHasSSE2;
+        S32 mCPUMhz;
+        std::string mFamily;
+};
+
+class LLMemoryInfo
+{
+public:
+        LLMemoryInfo();
+        void stream(std::ostream& s) const;
+
+        U32 getPhysicalMemory() const;
+};
+
+
+std::ostream& operator<<(std::ostream& s, const LLOSInfo& info);
+std::ostream& operator<<(std::ostream& s, const LLCPUInfo& info);
+std::ostream& operator<<(std::ostream& s, const LLMemoryInfo& info);
+
+// gunzip srcfile into dstfile.  Returns FALSE on error.
+BOOL gunzip_file(const char *srcfile, const char *dstfile);
+// gzip srcfile into dstfile.  Returns FALSE on error.
+BOOL gzip_file(const char *srcfile, const char *dstfile);
+
+extern LLCPUInfo gSysCPU;
+
+#endif // LL_LLSYS_H