vanetsim.scenario.KnownRSUsList Class Reference

Public Member Functions
	KnownRSUsList ()
synchronized void	updateRSU (RSU rsu, long ID, int x, int y, boolean isEncrypted)
void	checkOutdatedRSUs ()
RSU	findNearestRSU (int rsuX, int rsuY, int destX, int destY, int maxDistance)
KnownRSU[]	getFirstKnownRSU ()
int	getSize ()
void	clear ()

Static Public Member Functions
static void	setTimePassed (int time)

Detailed Description

A list of all known Road-Side-Units which was discovered through beacons. In contrast to the KnownPenalties- class, an own class is used for storing the information about the RSUs. Although this means slightly more overhead, it should not be a big case and allows better extensibility.
A simple hash algorithm based on the RSU ID is used to get better performance. The hash determines the corresponding linked list(beginnings of linked lists are found in head_). Known RSUs with the same hash are connected together through their next_ and previous_ values (see KnownRSU-class).

Constructor & Destructor Documentation

vanetsim.scenario.KnownRSUsList.KnownRSUsList ( )

inline

Empty constructor.

Member Function Documentation

void vanetsim.scenario.KnownRSUsList.checkOutdatedRSUs ( )

inline

Checks if a RSU is too old so that it can be removed. Note that this function is not synchronized! You need to make sure that no other thread uses any function on this object at the same time!

void vanetsim.scenario.KnownRSUsList.clear ( )

inline

Clears everything from this data structure.

RSU vanetsim.scenario.KnownRSUsList.findNearestRSU ( int  rsuX, int  rsuY, int  destX, int  destY, int  maxDistance  )

inline

Finds the nearest known RSU to a destination. Only searches for non encrypted RSUs

Parameters

rsuX	the x coordinate of the calling RSU
rsuY	the y coordinate of the calling RSU
destX	the x coordinate of the destination
destY	the y coordinate of the destination
maxDistance	the maximum distance the nearest RSU max have from the calling RSU

Returns

the nearest RSU or null if the calling RSU is the nearest

KnownRSU [] vanetsim.scenario.KnownRSUsList.getFirstKnownRSU ( )

inline

Gets an hashed array with known RSUs (array length depends on the HASH_SIZE). You can iterate through all known RSUs by using getNext() until you get to a null element on all elements of this array

Returns

the array with known RSUs

int vanetsim.scenario.KnownRSUsList.getSize ( )

inline

Gets the amount of known RSUs stored.

Returns

the size

static void vanetsim.scenario.KnownRSUsList.setTimePassed ( int  time )

inlinestatic

Sets the time passed since simulation start.

Parameters

time	the new time in milliseconds

synchronized void vanetsim.scenario.KnownRSUsList.updateRSU ( RSU  rsu, long  ID, int  x, int  y, boolean  isEncrypted  )

inline

Update a RSU or add it if it doesn't exist yet.

Parameters

rsu	a reference to the RSU
ID	the ID of the RSU
x	the x coordinate
y	the y coordinate
isEncrypted	if Beacon was encrypted

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The documentation for this class was generated from the following file:

• /Users/andreastomandl/Desktop/Vanet-Sim/Simulator/src/vanetsim/scenario/KnownRSUsList.java