--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/emailservices/emailservermonitor/src/emailservermonitorutilities.cpp	Thu Dec 17 08:39:21 2009 +0200
@@ -0,0 +1,107 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+* Implementation of EmailServerMonitor utility functions
+*
+*/
+//  Include Files  
+
+#include <e32base.h>
+#include <e32std.h>
+#include <e32des16.h>                   // Descriptors
+
+#include "emailtrace.h"
+#include "emailservermonitorutilities.h"
+
+// One second as micro seconds
+const TInt KEmailServerMonitorOneSecond = 1000000;
+
+// ---------------------------------------------------------------------------
+// Wait some time to give other applications and servers some time to shut
+// down themselves gracefully
+// ---------------------------------------------------------------------------
+//
+void Wait( TInt aWaitTimeInSeconds /*= KDefaultTimeToWaitInSeconds*/ )
+    {
+    FUNC_LOG;
+    User::After( aWaitTimeInSeconds * KEmailServerMonitorOneSecond );
+    }
+
+// ---------------------------------------------------------------------------
+// Checks if the process is already running
+// ---------------------------------------------------------------------------
+//
+TBool IsProcessRunning( TSecureId aUid, RProcess* aProcess /* = NULL */ )
+    {
+    FUNC_LOG;
+    
+    // Get our own UID, if we are checking wheter our own process is running,
+    // we are basically checking is there some other instance already running.
+    // So it's allowed to have one process running (ourselves), but not more.
+    // In normal case already one instance is counted as running.
+    TInt numberOfInstancesRunning = 0;
+    TInt numberOfInstancesAllowed = 0;
+    RProcess ownProcess;
+    if( ownProcess.SecureId() == aUid )
+        {
+        numberOfInstancesAllowed++;
+        }
+    ownProcess.Close();
+    
+    TFileName fileName;
+    TFindProcess finder;
+    while ( finder.Next( fileName ) == KErrNone )
+        {
+        RProcess process;
+        TInt outcome = process.Open( fileName );
+        if ( outcome != KErrNone )
+            {
+            INFO( "Could not open process. Checking next one." );
+            continue;
+            }
+        
+        // Check is this the searched process and is the process running
+        if ( process.SecureId() == aUid && 
+             process.ExitType() == EExitPending )
+            {
+            numberOfInstancesRunning++;
+
+            if ( numberOfInstancesRunning > numberOfInstancesAllowed )
+                {
+                // We either found second instance of ourselves or first
+                // instance of other searched process
+                process.Close();
+                // If process handle given, update it with found process
+                if( aProcess )
+                    {
+                    aProcess->Close();
+                    TInt error = aProcess->Open( fileName );
+                    // If process handle was given, it's assumed to be
+                    // up-to-date if we return success, so we need to return
+                    // failure if we can't reopen any of the found process'.
+                    // This should be very very rare case.
+                    if( error != KErrNone )
+                        {
+                        continue;
+                        }
+                    }
+                return ETrue;
+                }
+            }
+        
+        process.Close();
+        }
+    
+    return EFalse;
+    }