/*******************************************************************************
The content of this file includes portions of the AUDIOKINETIC Wwise Technology
released in source code form as part of the SDK installer package.

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Licensees holding valid commercial licenses to the AUDIOKINETIC Wwise Technology
may use this file in accordance with the end user license agreement provided 
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"Apache License"); you may not use this file except in compliance with the 
Apache License. You may obtain a copy of the Apache License at 
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  Copyright (c) 2023 Audiokinetic Inc.
*******************************************************************************/

// AkSyncLoader.h

/// \file 
/// Class for synchronous calls of asynchronous models

#ifndef _AK_SYNC_CALLER_H_
#define _AK_SYNC_CALLER_H_

#include <AK/Tools/Common/AkPlatformFuncs.h>

namespace AK
{
	namespace SoundEngine
	{
		/// AkSyncLoader: Init to create a sync event, call the asynchronous method, passing
		/// it the address of this object as the cookie, then call Wait. 
		class AkSyncCaller
		{
		public:
#if defined(AK_SUPPORT_THREADS)
			/// Initialize.
			AKRESULT Init()
			{
				if ( AKPLATFORM::AkCreateEvent( m_hEvent ) != AK_Success )
				{
					AKASSERT( !"Could not create synchronization event" );
					return AK_Fail;
				}
				return AK_Success;
			}

			/// Wait until the async function calls its callback.
			AKRESULT Wait( AKRESULT in_eResult )
			{
				if ( in_eResult != AK_Success )
				{
					AKPLATFORM::AkDestroyEvent( m_hEvent );
					return in_eResult;
				}

				// Task queueing successful. Block until completion.
				AKPLATFORM::AkWaitForEvent( m_hEvent );
				AKPLATFORM::AkDestroyEvent( m_hEvent );

				return m_eResult;
			}

			/// Call this from callback to release blocked thread.
			inline void Done() { AKPLATFORM::AkSignalEvent( m_hEvent ); }
#else
			AKRESULT Init() { m_bIsDone = false; return AK_Success;
			 }
			inline bool IsDone() { return m_bIsDone; }
			inline void Done() { m_bIsDone = true; }
#endif

			AKRESULT	m_eResult;	///< Operation result

		private:
#if defined(AK_SUPPORT_THREADS)
			AkEvent		m_hEvent;	///< Sync event
#else
			bool m_bIsDone;
#endif
		};
	}
}

#endif // _AK_SYNC_CALLER_H_