lockmanager_l.h File Reference

#include <gwenhywfar/types.h>

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Typedefs
typedef struct LCS_LOCKMANAGER	LCS_LOCKMANAGER
Functions
LCS_LOCKMANAGER *	LCS_LockManager_new (const char *objectTypeName)
void	LCS_LockManager_free (LCS_LOCKMANAGER *lm)
const char *	LCS_LockManager_GetObjectTypeName (const LCS_LOCKMANAGER *lm)
uint32_t	LCS_LockManager_RequestLock (LCS_LOCKMANAGER *lm, uint32_t clid, int duration, int maxLocks)
int	LCS_LockManager_RequestLockWithId (LCS_LOCKMANAGER *lm, uint32_t lockid, uint32_t clid, int duration, int maxLocks)
uint32_t	LCS_LockManager_GetNextRequestId ()
int	LCS_LockManager_CheckRequest (LCS_LOCKMANAGER *lm, uint32_t reqid)
int	LCS_LockManager_Unlock (LCS_LOCKMANAGER *lm, uint32_t reqid)
int	LCS_LockManager_RemoveRequest (LCS_LOCKMANAGER *lm, uint32_t reqid)
void	LCS_LockManager_RemoveAllClientRequests (LCS_LOCKMANAGER *lm, uint32_t clid)
int	LCS_LockManager_HasLockRequests (const LCS_LOCKMANAGER *lm)
int	LCS_LockManager_CheckAccess (LCS_LOCKMANAGER *lm, uint32_t reqid)

---

Typedef Documentation

typedef struct LCS_LOCKMANAGER LCS_LOCKMANAGER

---

Function Documentation

LCS_LOCKMANAGER* LCS_LockManager_new

(

const char *

objectTypeName

)

Parameters:

objectTypeName

just for debugging (e.g. "Reader", "Card")

void LCS_LockManager_free

(

LCS_LOCKMANAGER *

lm

)

const char* LCS_LockManager_GetObjectTypeName

(

const LCS_LOCKMANAGER *

lm

)

uint32_t LCS_LockManager_RequestLock	(	LCS_LOCKMANAGER *	lm,
		uint32_t	clid,
		int	duration,
		int	maxLocks
	)

Request a lock on the card. The locking time will be at most the number of seconds given in the parameter duration.

Returns:

0 on error, lock request id otherwise

Parameters:

	duration	maximum number of seconds the lock will hold
	maxLocks	maximum number of locks allowed for this client

int LCS_LockManager_RequestLockWithId	(	LCS_LOCKMANAGER *	lm,
		uint32_t	lockid,
		uint32_t	clid,
		int	duration,
		int	maxLocks
	)

Request a lock on the card. The locking time will be at most the number of seconds given in the parameter duration.

Returns:

-1 on error, o if ok

Parameters:

	duration	maximum number of seconds the lock will hold
	maxLocks	maximum number of locks allowed for this client

uint32_t LCS_LockManager_GetNextRequestId

(

)

int LCS_LockManager_CheckRequest	(	LCS_LOCKMANAGER *	lm,
		uint32_t	reqid
	)

Returns:

-1 on error, 0 if request granted, 1 of not

int LCS_LockManager_Unlock	(	LCS_LOCKMANAGER *	lm,
		uint32_t	reqid
	)

Removes a lock applied by the combination of LCS_LockManager_RequestLock and LCS_LockManager_CheckRequest.

int LCS_LockManager_RemoveRequest	(	LCS_LOCKMANAGER *	lm,
		uint32_t	reqid
	)

Removes a lock request from the list of waiting requests. The request to be removed MUST NOT be the currently active one (use LCS_LockManager_Unlock in this case).

Returns:

0 if ok, !=0 on error

void LCS_LockManager_RemoveAllClientRequests	(	LCS_LOCKMANAGER *	lm,
		uint32_t	clid
	)

Removes all lock requests for the given client. If the client already acquired a lock on this card then it will be removed (thus unlocking the card for use by other clients).

int LCS_LockManager_HasLockRequests

(

const LCS_LOCKMANAGER *

lm

)

int LCS_LockManager_CheckAccess	(	LCS_LOCKMANAGER *	lm,
		uint32_t	reqid
	)