--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sdkcreationmw/sdkruntimes/loggingapi/src/EcmtClient.cpp	Mon Mar 08 12:09:11 2010 +0530
@@ -0,0 +1,282 @@
+/*
+* Copyright (c) 2002-2005 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:  Client interface for EcmtServer
+*
+*/
+
+
+// INCLUDE FILES
+#include <e32svr.h>
+#include "EcmtClient.h"
+#include "EcmtUids.h"
+#include "EcmtClientServerCommon.h"
+#include "EcmtServerListener.h"
+
+_LIT(KEcmtServerFilename, "\\sys\\bin\\EcmtCore.exe");
+const TInt KServerStartTimeout = 30000000; // 30 sec
+const TInt KServerCheckTimeout = 1000000;  // 1 sec
+
+// ============================= LOCAL FUNCTIONS =============================
+
+// ---------------------------------------------------------------------------
+// StartServer
+// Starts the Ecmt server if it is not yet running.
+// ---------------------------------------------------------------------------
+static TInt StartServer()
+{
+    TFindServer findServer( KEcmtServerName );
+    TFullName name;
+    // Try to find Ecmt server
+    TInt result = findServer.Next( name );
+
+    if ( result != KErrNone )
+    {
+        // Server not yet running, so must launch it.
+        // Create a semaphore that will be signaled by server when
+        // it has completed its "boot" sequence.
+        RSemaphore semaphore;
+        result = semaphore.CreateGlobal( KEcmtSemaphoreName, 0 );
+
+        if ( result == KErrNone || result == KErrAlreadyExists )
+        {
+            // Semaphore created succesfully (or it existed already)
+            // so launch the server process.
+            RProcess server;
+
+            const TUid KEcmtServerUid = { KECMT_SERVER_UID };
+            const TUidType serverUid( KNullUid, KNullUid, KEcmtServerUid );
+
+            result = server.Create(KEcmtServerFilename, KNullDesC, serverUid);
+            if (result == KErrNone)
+            {
+                server.Resume();
+
+                TTime now, deadline;
+                now.HomeTime();
+                deadline.HomeTime();
+                deadline += TTimeIntervalMicroSeconds32(KServerStartTimeout);
+                result = KErrTimedOut;
+                while (result == KErrTimedOut && now < deadline)
+                {
+                    result = (server.ExitType() == EExitPending) ?
+                        semaphore.Wait(KServerCheckTimeout) : 
+                        KErrGeneral;
+                }
+
+                server.Close();
+            }
+        }
+        else
+        {
+            semaphore.Wait(KServerStartTimeout);
+        }
+
+        semaphore.Close();
+    }
+    return result;
+}
+
+// ============================ MEMBER FUNCTIONS =============================
+
+// ---------------------------------------------------------------------------
+// REcmt::REcmt
+// ---------------------------------------------------------------------------
+EXPORT_C REcmt::REcmt( ) : iServerListener(0)
+{
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::~REcmt
+// ---------------------------------------------------------------------------
+EXPORT_C REcmt::~REcmt( )
+{
+    delete iServerListener;
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::Connect
+// ---------------------------------------------------------------------------
+EXPORT_C TInt REcmt::Connect( )
+{
+    // Start server (unless it is already running)
+    TInt error = StartServer();
+
+    if (KErrNone == error)
+    {
+        error = CreateSession( KEcmtServerName,
+                               TVersion( KEcmtServerMajorVersionNumber,
+                                         KEcmtServerMinorVersionNumber,
+                                         KEcmtServerBuildVersionNumber ) );
+    }
+    return error;
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::Close
+// ---------------------------------------------------------------------------
+EXPORT_C void REcmt::Close( )
+{
+    if ( iServerListener )
+    {
+        delete iServerListener;
+        iServerListener = 0;
+    }
+    RHandleBase::Close();
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::SetServerObserver
+// ---------------------------------------------------------------------------
+EXPORT_C void REcmt::SetServerObserverL( MEcmtServerObserver* /* aObserver */ )
+{
+    User::Leave( KErrNotSupported );
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::SetServerObserver
+// ---------------------------------------------------------------------------
+EXPORT_C void REcmt::SetServerObserverL( TUid aUid, MEcmtServerObserver* aObserver )
+{
+    iServerListener = new (ELeave) CEcmtServerListener( aObserver, *this ); 
+
+    TIpcArgs messageParameters( aUid.iUid );
+    SendReceive( EEcmtNotifyUid, messageParameters ); // ignore return code
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::RequestServerNotification
+// ---------------------------------------------------------------------------
+void REcmt::RequestServerNotification( TDes8& aDes, TRequestStatus& aStatus )
+{
+    TIpcArgs messageParameters( &aDes );
+    SendReceive( EEcmtRequestServerNotification, messageParameters, aStatus );
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::CancelRequestServerMessage
+// ---------------------------------------------------------------------------
+void REcmt::CancelRequestServerNotification( )
+{
+    SendReceive( EEcmtCancelRequestServerNotification, TIpcArgs( ) );
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::Send
+// ---------------------------------------------------------------------------
+EXPORT_C void REcmt::Send( const TUint uid, const TDesC8& aData )
+{
+    TIpcArgs messageParameters( uid, &aData );
+    SendReceive( EEcmtRequestSendData, messageParameters );
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::Write
+// ---------------------------------------------------------------------------
+EXPORT_C void REcmt::Write( const TDesC16& aText )
+{
+    TIpcArgs messageParameters( &aText );
+    SendReceive( EEcmtRequestSendText, messageParameters );
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::WriteFormat
+// ---------------------------------------------------------------------------
+EXPORT_C void REcmt::WriteFormat( TRefByValue<const TDesC16> aFmt, ... )
+{
+    VA_LIST list;
+    VA_START( list, aFmt );
+
+    TBuf16<KFormatMaxSize> buf;
+    buf.FormatList( aFmt, list );
+    Write( buf );
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::GetServer
+// Returns thread local instance of REcmt client
+// ---------------------------------------------------------------------------
+REcmt* REcmt::GetServer()
+{
+    // Create a new REcmt reference for the static write functions, if a
+    // reference has not been created earlier.
+    REcmt* r = static_cast<REcmt*>(UserSvr::DllTls(KECMT_SERVER_UID));
+    if (!r)
+    {
+        r = new REcmt();
+        if (r)
+        {
+            TInt err = UserSvr::DllSetTls(KECMT_SERVER_UID, r);
+            if (err == KErrNone)
+            {
+                r->Connect();
+                if (err == KErrNone)
+                {
+                    return r;
+                }
+
+                // Cleanup
+                UserSvr::DllSetTls(KECMT_SERVER_UID, NULL);
+            }
+            delete r;
+            r = NULL;
+        }
+    }
+    
+    return r;
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::SWrite
+// ---------------------------------------------------------------------------
+EXPORT_C void REcmt::SWrite(const TDesC16& aText)
+{
+    REcmt* r = GetServer();
+    if (r)
+    {
+        r->Write(aText);
+    }
+}
+
+// ---------------------------------------------------------------------------
+// REcmt::SWriteFormat
+// ---------------------------------------------------------------------------
+EXPORT_C void REcmt::SWriteFormat(TRefByValue<const TDesC16> aFmt, ...)
+{
+    REcmt* r = GetServer();
+    if (r)
+    {
+        VA_LIST list;
+        VA_START( list, aFmt );
+        r->WriteFormat(aFmt, list);
+    }
+}
+
+// -----------------------------------------------------------------------------
+// REcmt::SClose
+// Deallocates thread local instance of REcmt client
+// -----------------------------------------------------------------------------
+EXPORT_C void REcmt::SClose()
+{
+    // Don't use GetServer() here because it may create a new REcmt instance,
+    // which would be exactly opposite to what we are trying to do here.
+    REcmt* r = static_cast<REcmt*>(UserSvr::DllTls(KECMT_SERVER_UID));
+    if (r)
+    {
+        r->Close();
+        delete r;
+        UserSvr::DllSetTls(KECMT_SERVER_UID, NULL);
+    }
+}
+
+//  End of File