--- /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;
+ }