// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "Symbian Foundation License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// processlaunch.cpp

// 

//

#include <f32file.h>

#include "cprocesslaunch.h"

//----------------------------------------------------------------------------	

/** called by the launcher! Launch the process by specified parameters

find the process and launch it

@param aParams A reference to TProcessStartParams object

@return Symbian error code

@see TProcessStartParams

@internalTechnology

@released

 */

TInt CProcessLaunch::ProcessLaunch(TProcessStartParams& aParams)

// now prevents multiple instances of the same image being launched!

// So P&S servers now look like realCServer2 servers.

	{

	TFullName fullName;

	_LIT(KStar, "*");

	TParse parser;

	parser.SetNoWild(aParams.GetProcessFileName(), NULL, NULL);

	fullName.Append(parser.NameAndExt());

	fullName.Append(KStar);

	TFindProcess processFinder(fullName);

	TInt err = KErrNotFound;

	while (err = processFinder.Next(fullName), err == KErrNone)

		{

		RProcess process;

		TInt processOpenErr = process.Open(processFinder);

		if (processOpenErr == KErrNone)

			{

			TExitType exitType = process.ExitType();

			if (exitType == EExitPending)

				{

				// Found a running instance of the process,

				// so return without starting another instance.

				process.Close();

				return KErrNone;

				}

			}

			process.Close();		

		}

	// No running instance found, so start one.

	return (DoProcessLaunch(aParams));

	}

/** Create the process by specified parameters and wait for the request

@param aParams A reference to TProcessStartParams object

@return Symbian error code

@see TProcessStartParams

@internalTechnology

@released

 */

TInt CProcessLaunch::DoProcessLaunch(TProcessStartParams& aParams)

	{

	RProcess process;

 	TInt r=process.Create(aParams.GetProcessFileName(),aParams.GetAsCommandLine());

	if (r!=KErrNone)

		{

		return r;

		}

	// are we expecing to rendezvous with the process we have created above

	if(aParams.GetRendezvousRequired())

		{

		TRequestStatus stat;

		process.Rendezvous(stat);

		if (stat!=KRequestPending)

			{

			process.Kill(0);

			}

		else

			{

			process.Resume();

			}

		User::WaitForRequest(stat);

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

		}

	process.Close();

	return r;

	}