/*
* Copyright (c) 2001-2006 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:  EAP and WLAN authentication protocols.
*
*/

/*
* %version: 5 %
*/

#if !defined( _EAP_AM_SEMAPHORE_SYMBIAN_H_ )
#define _EAP_AM_SEMAPHORE_SYMBIAN_H_

// INCLUDES
#include "eap_am_types.h"
#include "eap_variable_data.h"
#include "eap_am_export.h"
#include <abs_eap_am_semaphore.h>

// CLASS DECLARATION
class EAP_EXPORT eap_am_semaphore_symbian_c
: public abs_eap_am_semaphore_c
, public eap_am_semaphore_base_c
{
private:

	/// Object is Symbian implementation of the semaphore.
	RSemaphore m_semaphore;

	/// Object is Symbian implementation of the thread which is owner of the semaphore.
	RThread m_owner_thread;

	bool m_is_valid;
	
	u32_t m_count;

	// On purpose unimplemented constructors.
	eap_am_semaphore_symbian_c(eap_am_semaphore_symbian_c &source);
	const eap_am_semaphore_symbian_c & operator=(const eap_am_semaphore_symbian_c& source);

public:

	EAP_FUNC_IMPORT virtual ~eap_am_semaphore_symbian_c();

	EAP_FUNC_IMPORT eap_am_semaphore_symbian_c(	const i32_t initial_count,const i32_t maximum_count);

	EAP_FUNC_IMPORT eap_am_semaphore_symbian_c(const eap_am_semaphore_symbian_c * const owner);

	/// Function returns pointer to Symbian semaphore.
	EAP_FUNC_IMPORT const RSemaphore * get_semaphore() const;

	/// Function returns pointer to owner thread of the semaphore.
	EAP_FUNC_IMPORT const RThread * get_owner_thread() const;

	
	// - - - - - - - - - - - - - - - - - - - - - - - -
	// From abs_eap_am_semaphore_c
	
	/**
	 * This function reserves the semaphore. Thread will block until the semaphore is released
	 * by other owner of the semaphore.
	 */
	EAP_FUNC_IMPORT eap_status_e semaphore_reserve();

	/**
	 * This function releases the semaphore. Other blocking thread will continue execution.
	 */
	EAP_FUNC_IMPORT eap_status_e semaphore_release();

	/**
	 * The semaphore handle must be dublicated in Symbian operating system for each thread.
	 */
	EAP_FUNC_IMPORT  abs_eap_am_semaphore_c * dublicate_semaphore();

	EAP_FUNC_IMPORT u32_t get_count() const;

	/**
	 * Returns the validity of the semaphore.
	 */
	EAP_FUNC_IMPORT bool get_is_valid() const;

	// - - - - - - - - - - - - - - - - - - - - - - - -
};

#endif //#if !defined( _EAP_AM_SEMAPHORE_SYMBIAN_H_ )



// End of file
