Package edu.wpi.first.util

Class WPIUtilJNI

java.lang.Object

edu.wpi.first.util.WPIUtilJNI

public final class WPIUtilJNI
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	WPIUtilJNI.Helper

Constructor Summary

Constructors

Constructor	Description
WPIUtilJNI()

Method Summary

Modifier and Type	Method	Description
static void	addPortForwarder(int port, String remoteHost, int remotePort)
static int	createEvent(boolean manualReset, boolean initialState)
static int	createMulticastServiceAnnouncer(String serviceName, String serviceType, int port, String[] keys, String[] values)
static int	createMulticastServiceResolver(String serviceType)
static int	createSemaphore(int initialCount, int maximumCount)
static void	destroyEvent(int eventHandle)
static void	destroySemaphore(int semHandle)
static void	disableMockTime()
static void	enableMockTime()
static void	forceLoad()	Force load the library.
static void	freeMulticastServiceAnnouncer(int handle)
static void	freeMulticastServiceResolver(int handle)
static boolean	getMulticastServiceAnnouncerHasImplementation(int handle)
static ServiceData[]	getMulticastServiceResolverData(int handle)
static int	getMulticastServiceResolverEventHandle(int handle)
static boolean	getMulticastServiceResolverHasImplementation(int handle)
static long	getSystemTime()
static long	now()
static boolean	releaseSemaphore(int semHandle, int releaseCount)
static void	removePortForwarder(int port)
static void	resetEvent(int eventHandle)
static void	setEvent(int eventHandle)
static void	setMockTime(long time)
static void	startMulticastServiceAnnouncer(int handle)
static void	startMulticastServiceResolver(int handle)
static void	stopMulticastServiceAnnouncer(int handle)
static void	stopMulticastServiceResolver(int handle)
static void	waitForObject(int handle)	Waits for an handle to be signaled.
static int[]	waitForObjects(int[] handles)	Waits for one or more handles to be signaled.
static int[]	waitForObjectsTimeout(int[] handles, double timeout)	Waits for one or more handles to be signaled, with timeout.
static boolean	waitForObjectTimeout(int handle, double timeout)	Waits for an handle to be signaled, with timeout.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

WPIUtilJNI

public WPIUtilJNI()

Method Details

forceLoad

public static void forceLoad() throws IOException

Force load the library.

Throws:

IOException - if the library failed to load

enableMockTime

public static void enableMockTime()

disableMockTime

public static void disableMockTime()

setMockTime

public static void setMockTime(long time)

now

public static long now()

getSystemTime

public static long getSystemTime()

addPortForwarder

public static void addPortForwarder(int port, String remoteHost, int remotePort)

removePortForwarder

public static void removePortForwarder(int port)

createEvent

public static int createEvent(boolean manualReset, boolean initialState)

destroyEvent

public static void destroyEvent(int eventHandle)

setEvent

public static void setEvent(int eventHandle)

resetEvent

public static void resetEvent(int eventHandle)

createSemaphore

public static int createSemaphore(int initialCount, int maximumCount)

destroySemaphore

public static void destroySemaphore(int semHandle)

releaseSemaphore

public static boolean releaseSemaphore(int semHandle, int releaseCount)

waitForObject

public static void waitForObject(int handle) throws InterruptedException

Waits for an handle to be signaled.

Parameters:

handle - handle to wait on

Throws:

InterruptedException - on failure (e.g. object was destroyed)

waitForObjectTimeout

public static boolean waitForObjectTimeout(int handle, double timeout) throws InterruptedException

Waits for an handle to be signaled, with timeout.

Parameters:

handle - handle to wait on

timeout - timeout in seconds

Returns:

True if timeout reached without handle being signaled

Throws:

InterruptedException - on failure (e.g. object was destroyed)

waitForObjects

public static int[] waitForObjects(int[] handles) throws InterruptedException

Waits for one or more handles to be signaled.

Invalid handles are treated as signaled; the returned array will have the handle error bit set for any invalid handles.

Parameters:

handles - array of handles to wait on

Returns:

array of signaled handles

Throws:

InterruptedException - on failure (e.g. no objects were signaled)

waitForObjectsTimeout

public static int[] waitForObjectsTimeout(int[] handles, double timeout) throws InterruptedException

Waits for one or more handles to be signaled, with timeout.

Invalid handles are treated as signaled; the returned array will have the handle error bit set for any invalid handles.

Parameters:

handles - array of handles to wait on

timeout - timeout in seconds

Returns:

array of signaled handles; empty if timeout reached without any handle being signaled

Throws:

InterruptedException - on failure (e.g. no objects were signaled and no timeout)

createMulticastServiceAnnouncer

public static int createMulticastServiceAnnouncer(String serviceName, String serviceType, int port, String[] keys, String[] values)

freeMulticastServiceAnnouncer

public static void freeMulticastServiceAnnouncer(int handle)

startMulticastServiceAnnouncer

public static void startMulticastServiceAnnouncer(int handle)

stopMulticastServiceAnnouncer

public static void stopMulticastServiceAnnouncer(int handle)

getMulticastServiceAnnouncerHasImplementation

public static boolean getMulticastServiceAnnouncerHasImplementation(int handle)

createMulticastServiceResolver

public static int createMulticastServiceResolver(String serviceType)

freeMulticastServiceResolver

public static void freeMulticastServiceResolver(int handle)

startMulticastServiceResolver

public static void startMulticastServiceResolver(int handle)

stopMulticastServiceResolver

public static void stopMulticastServiceResolver(int handle)

getMulticastServiceResolverHasImplementation

public static boolean getMulticastServiceResolverHasImplementation(int handle)

getMulticastServiceResolverEventHandle

public static int getMulticastServiceResolverEventHandle(int handle)

getMulticastServiceResolverData

public static ServiceData[] getMulticastServiceResolverData(int handle)