/* BEGIN_ICS_COPYRIGHT3 ****************************************

Copyright (c) 2015, Intel Corporation

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** END_ICS_COPYRIGHT3   ****************************************/

/* [ICS VERSION STRING: unknown] */

#ifndef _IBA_PUBLIC_IRESMGR_H_
#define _IBA_PUBLIC_IRESMGR_H_

#include "iba/public/ilist.h"
#include "iba/public/ireqmgr.h"
#include "iba/public/iobjmgr.h"


#ifdef __cplusplus
extern "C"
{
#endif



/*
 * The free pool object provides an asynchronous free pool of available objects.
 * If no objects are available, it queues a request.  A free pool manages 
 * resources but does not create them.
 */


/*
 * Free pool object definition.
 */
typedef struct _FREE_POOL
{
	/* Available elements in free pool. */
	STACK		m_Stack;			/* DO NOT USE!! */

	/* Pending requests for elements. */
	QUEUE		m_RequestQueue;		/* DO NOT USE!! */

	/* Requests are dynamically allocated and added to the stack. */
	STACK		m_FreeRequestStack;	/* DO NOT USE!! */

	boolean		m_Initialized;		/* DO NOT USE!! */

} FREE_POOL;



/*
 * Function declarations.
 */

/* Create a new free pool. */
void		
FreePoolInitState( 
	IN FREE_POOL* const pFreePool );

boolean		
FreePoolInit(
	IN FREE_POOL* const pFreePool, 
	IN const uint32 MinItems );

void		
FreePoolDestroy( 
	IN FREE_POOL* const pFreePool );

/* Get/free resources. */
boolean		
FreePoolPut( 
	IN FREE_POOL* const pFreePool, 
	IN void* const pObject );

boolean		
FreePoolPutArray( 
	IN FREE_POOL* const pFreePool, 
	IN void* const pArray,
	IN const uint32 ItemCount, 
	IN const uint32 ItemSize );

void*		
FreePoolGet( 
	IN FREE_POOL* const pFreePool);

/* Check the free pool to see if a request can be completed, queue
 * a request, or get a request that can be completed.
 */
uint32		
FreePoolCheck( 
	IN const FREE_POOL* const pFreePool, 
	IN const uint32 Count, 
	IN const boolean PartialOk );

boolean		
FreePoolQueueRequest( 
	IN FREE_POOL* const pFreePool, 
	IN const uint32 Count,
	IN const boolean PartialOk, 
	IN REQ_CALLBACK pfnCallback, 
	IN void* const Context1, 
	IN void* const Context2 );

boolean		
FreePoolDequeueRequest( 
	IN FREE_POOL* const pFreePool,
	OUT REQUEST_OBJECT* const pRequest );

/* Return number of objects in the free pool. */
uint32		
FreePoolFreeCount( 
	IN const FREE_POOL* const pFreePool );

/* Initialize every object in the resource manager with the specified
 * function.
 */
void		
FreePoolApplyFunc( 
	IN const FREE_POOL* const pFreePool, 
	IN LIST_APPLY_FUNC pfnFunc,
	IN void* const Context );



/*
 * The resource manager object manages the allocation, deallocation, and 
 * distribution of objects.
 */


/*
 * Resource manager object definition.
 */
typedef struct _RES_MGR
{
	/* Private data structure used by the resource manager object. */
	/* Users should not access these variables directly. */
	FREE_POOL	m_FreePool;		/* DO NOT USE!! */

	/* These variables are exposed to the user to allow the memory to be */
	/* pinned, registered, etc. */
	uint32		m_ItemCount;	/* DO NOT USE!! */
	void		*m_pArray;		/* DO NOT USE!! */
	uint32		m_ArraySize;	/* DO NOT USE!! */

} RES_MGR;


/*
 * Function declarations.
 */

/* Create a new resource manager. */

/* Initializes, Allocates/frees the resources dynamically. */
void		
ResMgrInitState( 
	IN RES_MGR* const pResMgr );

boolean		
ResMgrInit( 
	IN RES_MGR* const pResMgr, 
	IN const uint32 ObjectCount, 
	IN uint32 ObjectSize, 
	IN const uint32 ByteAlignment, 
	IN const uint32 AlignmentOffset );

void		
ResMgrDestroy( 
	IN RES_MGR* const pResMgr );

/* Get/free resources. */
boolean		
ResMgrPut( 
	IN RES_MGR* const pResMgr, 
	IN void* const pObject );

boolean		
ResMgrPutArray( 
	IN RES_MGR* const pResMgr, 
	IN void* const pArray,
	IN const uint32 ItemCount, 
	IN const uint32 ItemSize );

void*		
ResMgrGet( 
	IN RES_MGR* const pResMgr );

/* Check the free pool to see if a request can be completed, queue
 * a request, or get a request that can be completed.
 */
uint32		
ResMgrCheck( 
	IN const RES_MGR* const pResMgr, 
	IN const uint32 Count, 
	IN const boolean PartialOk );

boolean		
ResMgrQueueRequest( 
	IN RES_MGR* const pResMgr, 
	IN const uint32 Count,
	IN const boolean PartialOk, 
	IN REQ_CALLBACK Callback, 
	IN void* const Context1, 
	IN void* const Context2 );

boolean		
ResMgrDequeueRequest( 
	IN RES_MGR* const pResMgr, 
	OUT REQUEST_OBJECT* const pRequest );

/* Return number of objects in the free pool. */
uint32		
ResMgrFreeCount( 
	IN const RES_MGR* const pResMgr );

/* Initialize every object in the resource manager with the specified
 * function.
 */
void		
ResMgrApplyFunc( 
	IN const RES_MGR* const pResMgr, 
	IN LIST_APPLY_FUNC Func,
	IN void* const Context );

#ifdef __cplusplus
}	/* extern "C" */
#endif

#endif /* _IBA_PUBLIC_IRESMGR_H_ */