sl@0: // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // e32\euser\epoc\win32\uc_cwhelp.cpp
sl@0: // This file contains the CodeWarrior specific helper code common to eexe and edll
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include <e32std.h>
sl@0: #include <e32std_private.h>
sl@0: 
sl@0: // Define LAZY_INIT to allow the runtime to construct itself only when necessary.  This uses less
sl@0: // TLS indicies, but is a more fragile approach.
sl@0: //
sl@0: #define LAZY_INIT
sl@0: 
sl@0: extern "C" {
sl@0: 
sl@0: //
sl@0: // Dummy versions of CodeWarrior runtime functions.
sl@0: //
sl@0: // These are only called when we are linked against the DLL version of the runtime, or if these
sl@0: // functions aren't present in the static runtime.
sl@0: //
sl@0: // The original functions are defined in:
sl@0: //   c:/apps/Metrowerks/OEM3.1/Symbian_Support/MSL/MSL_C/MSL_Win32/Src/ThreadLocalData.c
sl@0: //   c:/apps/Metrowerks/OEM3.1/Symbian_Support/MSL/MSL_C/MSL_Win32/Src/startup.win32.c
sl@0: //
sl@0: 
sl@0: #ifdef LAZY_INIT
sl@0: 	
sl@0: extern int _InitializeThreadDataIndex(void);
sl@0: extern int *__get_MSL_init_count(void);
sl@0: 	
sl@0: __declspec(weak) int *__get_MSL_init_count(void)
sl@0: 	{
sl@0: 	return NULL;
sl@0: 	}
sl@0: 	
sl@0: #else
sl@0: 
sl@0: extern int _CRTStartup();
sl@0: 	
sl@0: #endif
sl@0: 	
sl@0: extern void _CleanUpMSL(void);
sl@0: 
sl@0: }
sl@0: 
sl@0: TBool InitCWRuntime()
sl@0: 	{
sl@0: #ifdef LAZY_INIT
sl@0: 	return ETrue;
sl@0: #else
sl@0: 	return _CRTStartup();
sl@0: #endif
sl@0: 	}
sl@0: 
sl@0: TBool CleanupCWRuntime()
sl@0: 	{
sl@0: #ifdef LAZY_INIT
sl@0: 	int* init_count_ptr = __get_MSL_init_count();
sl@0: 	if (!init_count_ptr)					// if we couldn't link this function, don't attempt cleanup
sl@0: 		return ETrue;		
sl@0: 	if (!_InitializeThreadDataIndex())		// make sure runtime is initialised to known state
sl@0: 		return EFalse;
sl@0: 	if (++(*init_count_ptr) != 1)			// make it look like _CRTStartup was called
sl@0: 		return EFalse;
sl@0: #else
sl@0: 	if (*__get_MSL_init_count() < 1)		// _CRTStartup should have been called at least once
sl@0: 		return EFalse;
sl@0: 	*__get_MSL_init_count() = 1;			// reset to one so _CleanUpMSL runs
sl@0: #endif
sl@0: 	_CleanUpMSL();							// call into runtime to do cleanup
sl@0: 	return ETrue;
sl@0: 	}