uka.gm
Class GM

java.lang.Object
  uka.gm.GM

public class GM

extends java.lang.Object

Author:

Bernhard Haumacher, Thomas Moschny

Nested Class Summary

(package private) static class	GM.HPort
static class	GM.UID
static class	GM.VPort

Field Summary

static boolean	AVAILABLE
static int	DEFAULT_HPORT
(package private) static GM.HPort	firstHPort
(package private) static GM.HPort[]	hports
(package private) static int[]	hportsInUse
(package private) static int	hportsInUseCnt
(package private) static int	KNOWN_VPORTS Note: an array of size MAX_VPORTS is statically allocated, so do not increase the amount of available vports to infinity!
(package private) static int	lastAllocatedVPort
(package private) static int	MAX_HPORTS
static int	MAX_MESSAGE_SIZE
static int	RECEIVES_BEFORE_WAIT
static int	SENDS_BEFORE_WAIT
(package private) static GM.VPort[]	vports Array of already allocated virtual ports.
(package private) static int	VPORTS
(package private) static int	vportsInUseCnt

Constructor Summary

GM()

Method Summary

private static void	createHPort(int device, int hportNr)
static GM.VPort	createVPort(int vportNr) Create a new virtual port object for communication over the GM network interface.
private static void	gmClose(int hport)
static void	gmDump()
private static void	gmFinalize()
private static java.lang.String	gmGetHostName(int hport)
private static int	gmGetNodeID(int hport)
private static int	gmGetNodeID(int hport, byte[] uid)
private static int	gmGetNodeID(int hport, java.lang.String name)
private static byte[]	gmGetUID(int hport, int node)
private static void	gmInit()
private static int	gmMaxMessageSize()
private static int	gmMaxThreads(int hport)
private static int	gmNumPorts(int hport)
private static void	gmOpen(int device, int port_id, java.lang.String name)
private static long	gmReceive(int hport, int vport, byte[] buffer, int offset, int cnt)
private static long	gmSend(int hport, int vport, int hportTo, int nodeTo, int vportTo, byte[] buffer, int offset, int cnt)
(package private) static int	mapVPortToHPort(int vportNr)
static java.lang.String	usedHPorts()

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_HPORT

public static final int DEFAULT_HPORT

See Also:

Constant Field Values

RECEIVES_BEFORE_WAIT

public static final int RECEIVES_BEFORE_WAIT

See Also:

Constant Field Values

SENDS_BEFORE_WAIT

public static final int SENDS_BEFORE_WAIT

See Also:

Constant Field Values

AVAILABLE

public static final boolean AVAILABLE

KNOWN_VPORTS

static final int KNOWN_VPORTS

Note: an array of size MAX_VPORTS is statically allocated, so do not increase the amount of available vports to infinity!

See Also:

Constant Field Values

VPORTS

static final int VPORTS

See Also:

Constant Field Values

vportsInUseCnt

static int vportsInUseCnt

lastAllocatedVPort

static int lastAllocatedVPort

vports

static GM.VPort[] vports

Array of already allocated virtual ports. The port number zero reserved.

MAX_HPORTS

static final int MAX_HPORTS

See Also:

Constant Field Values

hportsInUseCnt

static int hportsInUseCnt

firstHPort

static GM.HPort firstHPort

hports

static GM.HPort[] hports

hportsInUse

static int[] hportsInUse

MAX_MESSAGE_SIZE

public static final int MAX_MESSAGE_SIZE

Constructor Detail

GM

public GM()

Method Detail

createVPort

public static GM.VPort createVPort(int vportNr)
                            throws java.io.IOException

Create a new virtual port object for communication over the GM network interface. The port number must be in the range 1..MAX_VPORTS. If the port number zero is specified, an arbitrary free virtual port is allocated with a port number >= KNOWN_VPORTS.

Throws:

java.io.IOException

usedHPorts

public static java.lang.String usedHPorts()

mapVPortToHPort

static int mapVPortToHPort(int vportNr)
                    throws java.io.IOException

Throws:

java.io.IOException

createHPort

private static void createHPort(int device,
                                int hportNr)
                         throws java.io.IOException

Throws:

java.io.IOException

gmInit

private static void gmInit()
                    throws java.io.IOException

Throws:

java.io.IOException

gmFinalize

private static void gmFinalize()

gmOpen

private static void gmOpen(int device,
                           int port_id,
                           java.lang.String name)
                    throws java.io.IOException

Throws:

java.io.IOException

gmClose

private static void gmClose(int hport)
                     throws java.io.IOException

Throws:

java.io.IOException

gmReceive

private static long gmReceive(int hport,
                              int vport,
                              byte[] buffer,
                              int offset,
                              int cnt)
                       throws java.io.IOException

Throws:

java.io.IOException

gmSend

private static long gmSend(int hport,
                           int vport,
                           int hportTo,
                           int nodeTo,
                           int vportTo,
                           byte[] buffer,
                           int offset,
                           int cnt)
                    throws java.io.IOException

Throws:

java.io.IOException

gmNumPorts

private static int gmNumPorts(int hport)

gmMaxMessageSize

private static int gmMaxMessageSize()

gmMaxThreads

private static int gmMaxThreads(int hport)

gmGetNodeID

private static int gmGetNodeID(int hport)

gmGetNodeID

private static int gmGetNodeID(int hport,
                               java.lang.String name)

gmGetNodeID

private static int gmGetNodeID(int hport,
                               byte[] uid)

gmGetHostName

private static java.lang.String gmGetHostName(int hport)

gmGetUID

private static byte[] gmGetUID(int hport,
                               int node)

gmDump

public static void gmDump()