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diff --git a/indra/llvfs/llpidlock.h b/indra/llvfs/llpidlock.h
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+/** 
+ * @file llpidlock.h
+ * @brief System information debugging classes.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2007, 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://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.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_PIDLOCK_H
+#define LL_PIDLOCK_H
+#include "llnametable.h"
+
+class LLSD;
+class LLFrameTimer;
+
+#if LL_WINDOWS	//For windows platform.
+
+#include <windows.h>
+
+#define getpid GetCurrentProcessId
+
+#else	//Everyone Else
+
+#include <signal.h>
+
+#endif //Everyone else.
+
+namespace LLPidLock
+{
+    void initClass(); // { (void) LLPidLockFile::instance(); }
+
+	bool requestLock( LLNameTable<void *> *name_table=NULL, bool autosave=TRUE,
+					  bool force_immediate=FALSE, F32 timeout=300.0);
+	bool checkLock(); 
+	void releaseLock(); 
+	bool isClean(); 
+
+	//getters
+	LLNameTable<void *> * getNameTable(); 
+	bool getAutosave(); 
+	bool getClean(); 
+	std::string getSaveName(); 
+
+	//setters
+	void setClean(bool clean); 
+	void setSaveName(std::string savename); 
+};
+
+#endif // LL_PIDLOCK_H