// Copyright (c) 2007-2009 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 "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:

// e32\euser\epoc\win32\uc_cwhelp.cpp

// This file contains the CodeWarrior specific helper code common to eexe and edll

// 

//

#include <e32std.h>

#include <e32std_private.h>

// Define LAZY_INIT to allow the runtime to construct itself only when necessary.  This uses less

// TLS indicies, but is a more fragile approach.

//

#define LAZY_INIT

extern "C" {

//

// Dummy versions of CodeWarrior runtime functions.

//

// These are only called when we are linked against the DLL version of the runtime, or if these

// functions aren't present in the static runtime.

//

// The original functions are defined in:

//   c:/apps/Metrowerks/OEM3.1/Symbian_Support/MSL/MSL_C/MSL_Win32/Src/ThreadLocalData.c

//   c:/apps/Metrowerks/OEM3.1/Symbian_Support/MSL/MSL_C/MSL_Win32/Src/startup.win32.c

//

#ifdef LAZY_INIT

extern int _InitializeThreadDataIndex(void);

extern int *__get_MSL_init_count(void);

__declspec(weak) int *__get_MSL_init_count(void)

	{

	return NULL;

	}

#else

extern int _CRTStartup();

#endif

extern void _CleanUpMSL(void);

}

TBool InitCWRuntime()

	{

#ifdef LAZY_INIT

	return ETrue;

#else

	return _CRTStartup();

#endif

	}

TBool CleanupCWRuntime()

	{

#ifdef LAZY_INIT

	int* init_count_ptr = __get_MSL_init_count();

	if (!init_count_ptr)					// if we couldn't link this function, don't attempt cleanup

		return ETrue;		

	if (!_InitializeThreadDataIndex())		// make sure runtime is initialised to known state

		return EFalse;

	if (++(*init_count_ptr) != 1)			// make it look like _CRTStartup was called

		return EFalse;

#else

	if (*__get_MSL_init_count() < 1)		// _CRTStartup should have been called at least once

		return EFalse;

	*__get_MSL_init_count() = 1;			// reset to one so _CleanUpMSL runs

#endif

	_CleanUpMSL();							// call into runtime to do cleanup

	return ETrue;

	}