org.jgroups.protocols
Class SHARED_LOOPBACK

java.lang.Object
  org.jgroups.stack.Protocol
      org.jgroups.protocols.TP
          org.jgroups.protocols.SHARED_LOOPBACK

public class SHARED_LOOPBACK
extends TP

Loopback transport shared by all channels within the same VM. Property for testing is that no messages are lost. Allows us to test various protocols (with ProtocolTester) at maximum speed.

Author:

Bela Ban

Nested Class Summary

Nested classes/interfaces inherited from class org.jgroups.protocols.TP

TP.Bundler, TP.DefaultBundler, TP.DefaultBundler2, TP.ProtocolAdapter, TP.TransferQueueBundler, TP.TransferQueueBundler2

Field Summary

Fields inherited from class org.jgroups.protocols.TP

bind_addr, bind_interface_str, bind_port, bundler, bundler_capacity, bundler_type, can_bind_to_mcast_addr, channel_name, connect_count, connectLock, default_thread_factory, diag_handler, diagnostics_addr, diagnostics_bind_interfaces, diagnostics_passcode, diagnostics_port, diagnostics_ttl, discard_incompatible_packets, enable_bundling, enable_diagnostics, enable_unicast_bundling, external_addr, external_port, f, global_thread_factory, header, last_discovery_request, LIST, local_addr, log_discard_msgs, log_discard_msgs_version, logical_addr_cache, logical_addr_cache_expiration, logical_addr_cache_max_size, loopback, max_bundle_size, max_bundle_timeout, members, MULTICAST, num_bytes_received, num_bytes_sent, num_incoming_msgs_received, num_msgs_received, num_msgs_sent, num_oob_msgs_received, OOB, oob_thread_factory, oob_thread_pool, oob_thread_pool_enabled, oob_thread_pool_keep_alive_time, oob_thread_pool_max_threads, oob_thread_pool_min_threads, oob_thread_pool_queue, oob_thread_pool_queue_enabled, oob_thread_pool_queue_max_size, physical_addr_max_fetch_attempts, port_range, preregistered_probe_handlers, print_function, receive_interfaces, receive_on_all_interfaces, singleton_name, socket_factory, suppress_log_different_cluster, suppress_log_different_version, suppress_time_different_cluster_warnings, suppress_time_different_version_warnings, thread_naming_pattern, thread_pool, thread_pool_enabled, thread_pool_keep_alive_time, thread_pool_max_threads, thread_pool_min_threads, thread_pool_queue, thread_pool_queue_enabled, thread_pool_queue_max_size, thread_pool_rejection_policy, tick_time, timer, timer_keep_alive_time, timer_max_threads, timer_min_threads, timer_queue_max_size, timer_rejection_policy, timer_thread_factory, timer_type, up_prots, wheel_size, who_has_cache, who_has_cache_timeout

Fields inherited from class org.jgroups.stack.Protocol

down_prot, ergonomics, id, log, name, stack, stats, up_prot

Constructor Summary

SHARED_LOOPBACK()

Method Summary

void	destroy() This method is called on a Channel.close().
java.lang.Object	down(Event evt) Caller by the layer above this layer.
static java.lang.String	dumpRoutingTable()
java.lang.String	getInfo()
protected PhysicalAddress	getPhysicalAddress()
protected static void	register(java.lang.String channel_name, Address local_addr, SHARED_LOOPBACK shared_loopback)
void	sendMulticast(byte[] data, int offset, int length) Send to all members in the group.
protected void	sendToSingleMember(Address dest, byte[] buf, int offset, int length)
void	sendUnicast(PhysicalAddress dest, byte[] data, int offset, int length) Send a unicast to 1 member.
boolean	supportsMulticasting() Whether or not hardware multicasting is supported
java.lang.String	toString()
protected static void	unregister(java.lang.String channel_name, Address local_addr)

Methods inherited from class org.jgroups.protocols.TP

addPhysicalAddressToCache, clearDifferentClusterCache, clearDifferentVersionCache, clearLogicalAddressCache, createThreadPool, dispatchToThreadPool, doSend, dumpTimerTasks, evictLogicalAddressCache, evictLogicalAddressCache, fetchLocalAddresses, getAllPhysicalAddressesFromCache, getBindAddress, getBindPort, getBundlerBufferSize, getDefaultThreadPool, getDefaultThreadPoolThreadFactory, getDifferentClusterMessages, getDifferentVersionMessages, getLogDiscardMessages, getLogDiscardMessagesVersion, getMaxBundleSize, getMaxBundleTimeout, getNumBytesReceived, getNumBytesSent, getNumMessagesReceived, getNumMessagesSent, getNumThreads, getNumTimerTasks, getOOBMaxQueueSize, getOOBMessages, getOOBPoolSize, getOOBQueueSize, getOOBThreadPool, getOOBThreadPoolKeepAliveTime, getOOBThreadPoolMaxThreads, getOOBThreadPoolMinThreads, getOOBThreadPoolThreadFactory, getPhysicalAddressFromCache, getPortRange, getReceiveInterfaces, getRegularMaxQueueSize, getRegularMessages, getRegularPoolSize, getRegularQueueSize, getSingletonName, getSocketFactory, getThreadFactory, getThreadNamingPattern, getThreadPoolKeepAliveTime, getThreadPoolMaxThreads, getThreadPoolMinThreads, getTimer, getTimerClass, getTimerKeepAliveTime, getTimerMaxThreads, getTimerMinThreads, getTimerQueueSize, getTimerThreadFactory, getTimerThreads, getUpProtocols, handleConnect, handleDisconnect, handleDownEvent, init, isDefaulThreadPoolEnabled, isDiscardIncompatiblePackets, isEnableBundling, isEnableUnicastBundling, isLoopback, isMulticastCapable, isOOBThreadPoolEnabled, isReceiveOnAllInterfaces, isSingleton, passMessageUp, passToAllUpProtocols, printLogicalAddressCache, printWhoHasCache, readMessage, readMessageList, receive, registerLocalAddress, registerProbeHandler, removeLogicalAddressFromCache, resetStats, send, sendToAllPhysicalAddresses, setBindAddress, setBindPort, setBindToAllInterfaces, setDefaultThreadPool, setDefaultThreadPoolThreadFactory, setDiagnosticsHandler, setDiscardIncompatiblePackets, setEnableBundling, setEnableUnicastBundling, setInAllThreadFactories, setLogDiscardMessages, setLogDiscardMessagesVersion, setLoopback, setMaxBundleSize, setMaxBundleTimeout, setOOBRejectionPolicy, setOOBThreadPool, setOOBThreadPoolKeepAliveTime, setOOBThreadPoolMaxThreads, setOOBThreadPoolMinThreads, setOOBThreadPoolThreadFactory, setPortRange, setRegularRejectionPolicy, setSocketFactory, setSourceAddress, setThreadFactory, setThreadNames, setThreadPoolKeepAliveTime, setThreadPoolMaxThreads, setThreadPoolMinThreads, setThreadPoolQueueEnabled, setTimer, setTimerKeepAliveTime, setTimerMaxThreads, setTimerMinThreads, setTimerThreadFactory, shutdownThreadPool, start, stop, unregisterProbeHandler, unsetThreadNames, up, writeMessage, writeMessageList

Methods inherited from class org.jgroups.stack.Protocol

dumpStats, enableStats, getConfigurableObjects, getDownProtocol, getDownServices, getId, getIdsAbove, getLevel, getName, getProtocolStack, getTransport, getUpProtocol, getUpServices, getValue, isErgonomics, printStats, providedDownServices, providedUpServices, requiredDownServices, requiredUpServices, resetStatistics, setDownProtocol, setErgonomics, setId, setLevel, setProtocolStack, setUpProtocol, setValue, setValues, statsEnabled

Methods inherited from class java.lang.Object

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

Constructor Detail

SHARED_LOOPBACK

public SHARED_LOOPBACK()

Method Detail

supportsMulticasting

public boolean supportsMulticasting()

Description copied from class: TP

Whether or not hardware multicasting is supported

Specified by:

supportsMulticasting in class TP

toString

public java.lang.String toString()

Overrides:

toString in class TP

dumpRoutingTable

public static java.lang.String dumpRoutingTable()

sendMulticast

public void sendMulticast(byte[] data,
                          int offset,
                          int length)
                   throws java.lang.Exception

Description copied from class: TP

Send to all members in the group. UDP would use an IP multicast message, whereas TCP would send N messages, one for each member

Specified by:

sendMulticast in class TP

Parameters:

data - The data to be sent. This is not a copy, so don't modify it

Throws:

java.lang.Exception

sendUnicast

public void sendUnicast(PhysicalAddress dest,
                        byte[] data,
                        int offset,
                        int length)
                 throws java.lang.Exception

Description copied from class: TP

Send a unicast to 1 member. Note that the destination address is a *physical*, not a logical address

Specified by:

sendUnicast in class TP

Parameters:

dest - Must be a non-null unicast address

data - The data to be sent. This is not a copy, so don't modify it

Throws:

java.lang.Exception

sendToSingleMember

protected void sendToSingleMember(Address dest,
                                  byte[] buf,
                                  int offset,
                                  int length)
                           throws java.lang.Exception

Overrides:

sendToSingleMember in class TP

Throws:

java.lang.Exception

getInfo

public java.lang.String getInfo()

Specified by:

getInfo in class TP

getPhysicalAddress

protected PhysicalAddress getPhysicalAddress()

Specified by:

getPhysicalAddress in class TP

down

public java.lang.Object down(Event evt)

Description copied from class: TP

Caller by the layer above this layer. Usually we just put this Message into the send queue and let one or more worker threads handle it. A worker thread then removes the Message from the send queue, performs a conversion and adds the modified Message to the send queue of the layer below it, by calling down()).

Overrides:

down in class TP

destroy

public void destroy()

Description copied from class: Protocol

This method is called on a Channel.close(). Does some cleanup; after the call the VM will terminate

Overrides:

destroy in class TP

register

protected static void register(java.lang.String channel_name,
                               Address local_addr,
                               SHARED_LOOPBACK shared_loopback)

unregister

protected static void unregister(java.lang.String channel_name,
                                 Address local_addr)