/*

* Copyright (c) 2006-2010 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:  

*

*/

#include "t_oomclient.h"

#include "../inc/clientserver.h"

const TInt KServerDefaultMessageSlots = 1; //Number of message slots available per session.

const TInt KServerRetryCount = 2;

static TInt StartServer()

//

// Start the server process. Simultaneous launching

// of two such processes should be detected when the second one attempts to

// create the server object, failing with KErrAlreadyExists.

//

	{

	const TUidType serverUid(KNullUid,KNullUid,KServerUid3);

	RProcess server;

	TInt r=server.Create(KAllocServerImg,KNullDesC,serverUid);

	if (r!=KErrNone)

		return r;

	TRequestStatus stat;

	server.Rendezvous(stat);

	if (stat!=KRequestPending)

		server.Kill(0);		// abort startup

	else

		server.Resume();	// logon OK - start the server

	User::WaitForRequest(stat);		// wait for start or death

	// we can't use the 'exit reason' if the server panicked as this

	// is the panic 'reason' and may be '0' which cannot be distinguished

	// from KErrNone

	r=(server.ExitType()==EExitPanic) ? KErrGeneral : stat.Int();

	server.Close();

	return r;

	}

EXPORT_C TInt ROOMAllocSession::Connect()

//

// Connect to the server, attempting to start it if necessary

//

	{

	TInt retry=KServerRetryCount;

	for (;;)

		{

		TInt r=CreateSession(KAllocServerName,TVersion(0,0,0),KServerDefaultMessageSlots);

		if (r!=KErrNotFound && r!=KErrServerTerminated)

			return r;

		if (--retry==0)

			return r;

		r=StartServer();

		if (r!=KErrNone && r!=KErrAlreadyExists)

			return r;

		}

	}

EXPORT_C TInt ROOMAllocSession::Reset()

	{

	return SendReceive(EAllocServReset);

	}

EXPORT_C TInt ROOMAllocSession::StartAllocating()

	{

	return SendReceive(EAllocServStart);

	}

EXPORT_C TInt ROOMAllocSession::StopAllocating()

	{

	return SendReceive(EAllocServStop);

	}

EXPORT_C TInt ROOMAllocSession::MemoryLow(TUid aPlugin)

	{

	return SendReceive(EAllocServMemoryLow, TIpcArgs(aPlugin.iUid));

	}

EXPORT_C TInt ROOMAllocSession::MemoryGood(TUid aPlugin)

	{

	return SendReceive(EAllocServMemoryGood, TIpcArgs(aPlugin.iUid));

	}

EXPORT_C TInt ROOMAllocSession::Configure(TUid aPlugin, TUint aAllocRate, TUint aAllocInitial, TUint aAllocLimit)

	{

	return SendReceive(EAllocServConfig,TIpcArgs(aPlugin.iUid, aAllocRate, aAllocInitial, aAllocLimit));

	}