1 /*
   2  * Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.corba.se.spi.orb;
  27 
  28 import java.util.Map ;
  29 import java.util.HashMap ;
  30 import java.util.Properties ;
  31 import java.util.concurrent.ConcurrentHashMap;
  32 import java.util.logging.Logger ;
  33 
  34 import java.security.AccessController ;
  35 import java.security.PrivilegedAction ;
  36 
  37 import org.omg.CORBA.TCKind ;
  38 
  39 import com.sun.corba.se.pept.broker.Broker ;
  40 import com.sun.corba.se.pept.transport.ByteBufferPool;
  41 
  42 import com.sun.corba.se.spi.protocol.RequestDispatcherRegistry ;
  43 import com.sun.corba.se.spi.protocol.ClientDelegateFactory ;
  44 import com.sun.corba.se.spi.protocol.CorbaServerRequestDispatcher ;
  45 import com.sun.corba.se.spi.protocol.CorbaMessageMediator ;
  46 import com.sun.corba.se.spi.protocol.PIHandler ;
  47 import com.sun.corba.se.spi.resolver.LocalResolver ;
  48 import com.sun.corba.se.spi.resolver.Resolver ;
  49 import com.sun.corba.se.spi.transport.CorbaContactInfoListFactory ;
  50 import com.sun.corba.se.spi.legacy.connection.LegacyServerSocketEndPointInfo;
  51 import com.sun.corba.se.spi.legacy.connection.LegacyServerSocketManager;
  52 import com.sun.corba.se.spi.monitoring.MonitoringConstants;
  53 import com.sun.corba.se.spi.monitoring.MonitoringManager;
  54 import com.sun.corba.se.spi.monitoring.MonitoringManagerFactory;
  55 import com.sun.corba.se.spi.monitoring.MonitoringFactories;
  56 
  57 import com.sun.corba.se.spi.ior.IdentifiableFactoryFinder ;
  58 import com.sun.corba.se.spi.ior.TaggedComponentFactoryFinder ;
  59 import com.sun.corba.se.spi.ior.ObjectKey ;
  60 import com.sun.corba.se.spi.ior.ObjectKeyFactory ;
  61 import com.sun.corba.se.spi.ior.IOR ;
  62 
  63 import com.sun.corba.se.spi.orbutil.closure.Closure ;
  64 
  65 import com.sun.corba.se.spi.orb.Operation ;
  66 import com.sun.corba.se.spi.orb.ORBData ;
  67 import com.sun.corba.se.spi.orb.ORBVersion ;
  68 import com.sun.corba.se.spi.orbutil.threadpool.ThreadPoolManager;
  69 
  70 import com.sun.corba.se.spi.oa.OAInvocationInfo ;
  71 import com.sun.corba.se.spi.transport.CorbaTransportManager;
  72 
  73 import com.sun.corba.se.spi.logging.LogWrapperFactory ;
  74 import com.sun.corba.se.spi.logging.LogWrapperBase ;
  75 import com.sun.corba.se.spi.logging.CORBALogDomains ;
  76 
  77 import com.sun.corba.se.spi.copyobject.CopierManager ;
  78 
  79 import com.sun.corba.se.spi.presentation.rmi.PresentationManager ;
  80 import com.sun.corba.se.spi.presentation.rmi.PresentationDefaults ;
  81 
  82 import com.sun.corba.se.spi.servicecontext.ServiceContextRegistry ;
  83 
  84 // XXX needs an SPI or else it does not belong here
  85 import com.sun.corba.se.impl.corba.TypeCodeImpl ;
  86 import com.sun.corba.se.impl.corba.TypeCodeFactory ;
  87 
  88 // XXX Should there be a SPI level constants ?
  89 import com.sun.corba.se.impl.orbutil.ORBConstants ;
  90 
  91 import com.sun.corba.se.impl.oa.poa.BadServerIdHandler ;
  92 
  93 import com.sun.corba.se.impl.transport.ByteBufferPoolImpl;
  94 
  95 import com.sun.corba.se.impl.logging.ORBUtilSystemException ;
  96 import com.sun.corba.se.impl.logging.OMGSystemException ;
  97 
  98 import com.sun.corba.se.impl.presentation.rmi.PresentationManagerImpl ;
  99 
 100 public abstract class ORB extends com.sun.corba.se.org.omg.CORBA.ORB
 101     implements Broker, TypeCodeFactory
 102 {
 103     // As much as possible, this class should be stateless.  However,
 104     // there are a few reasons why it is not:
 105     //
 106     // 1. The ORB debug flags are defined here because they are accessed
 107     //    frequently, and we do not want a cast to the impl just for that.
 108     // 2. typeCodeMap and primitiveTypeCodeConstants are here because they
 109     //    are needed in both ORBImpl and ORBSingleton.
 110     // 3. Logging support is here so that we can avoid problems with
 111     //    incompletely initialized ORBs that need to perform logging.
 112 
 113     // Flag set at compile time to debug flag processing: this can't
 114     // be one of the xxxDebugFlags because it is used to debug the mechanism
 115     // that sets the xxxDebugFlags!
 116     public static boolean ORBInitDebug = false;
 117 
 118     // Currently defined debug flags.  Any additions must be called xxxDebugFlag.
 119     // All debug flags must be public boolean types.
 120     // These are set by passing the flag -ORBDebug x,y,z in the ORB init args.
 121     // Note that x,y,z must not contain spaces.
 122     public boolean transportDebugFlag = false ;
 123     public boolean subcontractDebugFlag = false ;
 124     public boolean poaDebugFlag = false ;
 125     public boolean poaConcurrencyDebugFlag = false ;
 126     public boolean poaFSMDebugFlag = false ;
 127     public boolean orbdDebugFlag = false ;
 128     public boolean namingDebugFlag = false ;
 129     public boolean serviceContextDebugFlag = false ;
 130     public boolean transientObjectManagerDebugFlag = false ;
 131     public boolean giopVersionDebugFlag = false;
 132     public boolean shutdownDebugFlag = false;
 133     public boolean giopDebugFlag = false;
 134     public boolean invocationTimingDebugFlag = false ;
 135 
 136     // SystemException log wrappers.  Protected so that they can be used in
 137     // subclasses.
 138     protected static ORBUtilSystemException staticWrapper ;
 139     protected ORBUtilSystemException wrapper ;
 140     protected OMGSystemException omgWrapper ;
 141 
 142     // This map is needed for resolving recursive type code placeholders
 143     // based on the unique repository id.
 144     // XXX Should this be a WeakHashMap for GC?
 145     private Map typeCodeMap ;
 146 
 147     private TypeCodeImpl[] primitiveTypeCodeConstants ;
 148 
 149     // ByteBufferPool - needed by both ORBImpl and ORBSingleton
 150     ByteBufferPool byteBufferPool;
 151 
 152     // Local testing
 153     // XXX clean this up, probably remove these
 154     public abstract boolean isLocalHost( String hostName ) ;
 155     public abstract boolean isLocalServerId( int subcontractId, int serverId ) ;
 156 
 157     // Invocation stack manipulation
 158     public abstract OAInvocationInfo peekInvocationInfo() ;
 159     public abstract void pushInvocationInfo( OAInvocationInfo info ) ;
 160     public abstract OAInvocationInfo popInvocationInfo() ;
 161 
 162     public abstract CorbaTransportManager getCorbaTransportManager();
 163     public abstract LegacyServerSocketManager getLegacyServerSocketManager();
 164 
 165     // wrapperMap maintains a table of LogWrapper instances used by
 166     // different classes to log exceptions.  The key is a StringPair
 167     // representing LogDomain and ExceptionGroup.
 168     private Map wrapperMap ;
 169 
 170     static class Holder {
 171         static final PresentationManager defaultPresentationManager =
 172             setupPresentationManager();
 173     }
 174 
 175     private static final Map<Object, PresentationManager> pmContexts = new HashMap<>();
 176 
 177     private static Map staticWrapperMap = new ConcurrentHashMap();
 178 
 179     protected MonitoringManager monitoringManager;
 180 
 181     private static PresentationManager setupPresentationManager() {
 182         staticWrapper = ORBUtilSystemException.get(
 183             CORBALogDomains.RPC_PRESENTATION ) ;
 184 
 185         boolean useDynamicStub =
 186             ((Boolean)AccessController.doPrivileged(
 187                 new PrivilegedAction() {
 188                     public java.lang.Object run() {
 189                         return Boolean.valueOf( Boolean.getBoolean (
 190                             ORBConstants.USE_DYNAMIC_STUB_PROPERTY ) ) ;
 191                     }
 192                 }
 193             )).booleanValue() ;
 194 
 195         PresentationManager.StubFactoryFactory dynamicStubFactoryFactory =
 196             (PresentationManager.StubFactoryFactory)AccessController.doPrivileged(
 197                 new PrivilegedAction() {
 198                     public java.lang.Object run() {
 199                         PresentationManager.StubFactoryFactory sff =
 200                             PresentationDefaults.getProxyStubFactoryFactory() ;
 201 
 202                         String className = System.getProperty(
 203                             ORBConstants.DYNAMIC_STUB_FACTORY_FACTORY_CLASS,
 204                             "com.sun.corba.se.impl.presentation.rmi.bcel.StubFactoryFactoryBCELImpl" ) ;
 205 
 206                         try {
 207                             // First try the configured class name, if any
 208                             Class<?> cls =
 209                                 sun.corba.SharedSecrets.getJavaCorbaAccess().loadClass(className);
 210                             sff = (PresentationManager.StubFactoryFactory)cls.newInstance();
 211                         } catch (Exception exc) {
 212                             // Use the default. Log the error as a warning.
 213                             staticWrapper.errorInSettingDynamicStubFactoryFactory(
 214                                 exc, className ) ;
 215                         }
 216 
 217                         return sff ;
 218                     }
 219                 }
 220             ) ;
 221 
 222         PresentationManager pm = new PresentationManagerImpl( useDynamicStub ) ;
 223         pm.setStubFactoryFactory( false,
 224             PresentationDefaults.getStaticStubFactoryFactory() ) ;
 225         pm.setStubFactoryFactory( true, dynamicStubFactoryFactory ) ;
 226         return pm;
 227     }
 228 
 229     public void destroy() {
 230         wrapper = null;
 231         omgWrapper = null;
 232         typeCodeMap = null;
 233         primitiveTypeCodeConstants = null;
 234         byteBufferPool = null;
 235     }
 236 
 237     /**
 238      * Returns the Presentation Manager for the current thread group, using the ThreadGroup-specific
 239      * AppContext to hold it. Creates and records one if needed.
 240      */
 241     public static PresentationManager getPresentationManager()
 242     {
 243         SecurityManager sm = System.getSecurityManager();
 244         sun.misc.JavaAWTAccess javaAwtAccess = sun.misc.SharedSecrets.getJavaAWTAccess();
 245         if (sm != null && javaAwtAccess != null) {
 246             final Object appletContext = javaAwtAccess.getAppletContext();
 247             if (appletContext != null) {
 248                 synchronized (pmContexts) {
 249                     return pmContexts.putIfAbsent(appletContext, setupPresentationManager());
 250                 }
 251             }
 252         }
 253 
 254         // No security manager or AppletAppContext
 255         return Holder.defaultPresentationManager;
 256     }
 257 
 258     /** Get the appropriate StubFactoryFactory.  This
 259      * will be dynamic or static depending on whether
 260      * com.sun.CORBA.ORBUseDynamicStub is true or false.
 261      */
 262     public static PresentationManager.StubFactoryFactory
 263         getStubFactoryFactory()
 264     {
 265         PresentationManager gPM = getPresentationManager();
 266         boolean useDynamicStubs = gPM.useDynamicStubs() ;
 267         return gPM.getStubFactoryFactory( useDynamicStubs ) ;
 268     }
 269 
 270     protected ORB()
 271     {
 272         // Initialize logging first, since it is needed nearly
 273         // everywhere (for example, in TypeCodeImpl).
 274         wrapperMap = new ConcurrentHashMap();
 275         wrapper = ORBUtilSystemException.get( this,
 276             CORBALogDomains.RPC_PRESENTATION ) ;
 277         omgWrapper = OMGSystemException.get( this,
 278             CORBALogDomains.RPC_PRESENTATION ) ;
 279 
 280         typeCodeMap = new HashMap();
 281 
 282         primitiveTypeCodeConstants = new TypeCodeImpl[] {
 283             new TypeCodeImpl(this, TCKind._tk_null),
 284             new TypeCodeImpl(this, TCKind._tk_void),
 285             new TypeCodeImpl(this, TCKind._tk_short),
 286             new TypeCodeImpl(this, TCKind._tk_long),
 287             new TypeCodeImpl(this, TCKind._tk_ushort),
 288             new TypeCodeImpl(this, TCKind._tk_ulong),
 289             new TypeCodeImpl(this, TCKind._tk_float),
 290             new TypeCodeImpl(this, TCKind._tk_double),
 291             new TypeCodeImpl(this, TCKind._tk_boolean),
 292             new TypeCodeImpl(this, TCKind._tk_char),
 293             new TypeCodeImpl(this, TCKind._tk_octet),
 294             new TypeCodeImpl(this, TCKind._tk_any),
 295             new TypeCodeImpl(this, TCKind._tk_TypeCode),
 296             new TypeCodeImpl(this, TCKind._tk_Principal),
 297             new TypeCodeImpl(this, TCKind._tk_objref),
 298             null,       // tk_struct
 299             null,       // tk_union
 300             null,       // tk_enum
 301             new TypeCodeImpl(this, TCKind._tk_string),
 302             null,       // tk_sequence
 303             null,       // tk_array
 304             null,       // tk_alias
 305             null,       // tk_except
 306             new TypeCodeImpl(this, TCKind._tk_longlong),
 307             new TypeCodeImpl(this, TCKind._tk_ulonglong),
 308             new TypeCodeImpl(this, TCKind._tk_longdouble),
 309             new TypeCodeImpl(this, TCKind._tk_wchar),
 310             new TypeCodeImpl(this, TCKind._tk_wstring),
 311             new TypeCodeImpl(this, TCKind._tk_fixed),
 312             new TypeCodeImpl(this, TCKind._tk_value),
 313             new TypeCodeImpl(this, TCKind._tk_value_box),
 314             new TypeCodeImpl(this, TCKind._tk_native),
 315             new TypeCodeImpl(this, TCKind._tk_abstract_interface)
 316         } ;
 317 
 318         monitoringManager =
 319             MonitoringFactories.getMonitoringManagerFactory( ).
 320                 createMonitoringManager(
 321                 MonitoringConstants.DEFAULT_MONITORING_ROOT,
 322                 MonitoringConstants.DEFAULT_MONITORING_ROOT_DESCRIPTION);
 323     }
 324 
 325     // Typecode support: needed in both ORBImpl and ORBSingleton
 326     public TypeCodeImpl get_primitive_tc(int kind)
 327     {
 328         synchronized (this) {
 329             checkShutdownState();
 330         }
 331         try {
 332             return primitiveTypeCodeConstants[kind] ;
 333         } catch (Throwable t) {
 334             throw wrapper.invalidTypecodeKind( t, new Integer(kind) ) ;
 335         }
 336     }
 337 
 338     public synchronized void setTypeCode(String id, TypeCodeImpl code)
 339     {
 340         checkShutdownState();
 341         typeCodeMap.put(id, code);
 342     }
 343 
 344     public synchronized TypeCodeImpl getTypeCode(String id)
 345     {
 346         checkShutdownState();
 347         return (TypeCodeImpl)typeCodeMap.get(id);
 348     }
 349 
 350     public MonitoringManager getMonitoringManager( ) {
 351         synchronized (this) {
 352             checkShutdownState();
 353         }
 354         return monitoringManager;
 355     }
 356 
 357     // Special non-standard set_parameters method for
 358     // creating a precisely controlled ORB instance.
 359     // An ORB created by this call is affected only by
 360     // those properties passes explicitly in props, not by
 361     // the system properties and orb.properties files as
 362     // with the standard ORB.init methods.
 363     public abstract void set_parameters( Properties props ) ;
 364 
 365     // ORB versioning
 366     public abstract ORBVersion getORBVersion() ;
 367     public abstract void setORBVersion( ORBVersion version ) ;
 368 
 369     // XXX This needs a better name
 370     public abstract IOR getFVDCodeBaseIOR() ;
 371 
 372     /**
 373      * Handle a bad server id for the given object key.  This should
 374      * always through an exception: either a ForwardException to
 375      * allow another server to handle the request, or else an error
 376      * indication.  XXX Remove after ORT for ORBD work is integrated.
 377      */
 378     public abstract void handleBadServerId( ObjectKey okey ) ;
 379     public abstract void setBadServerIdHandler( BadServerIdHandler handler ) ;
 380     public abstract void initBadServerIdHandler() ;
 381 
 382     public abstract void notifyORB() ;
 383 
 384     public abstract PIHandler getPIHandler() ;
 385 
 386     public abstract void checkShutdownState();
 387 
 388     // Dispatch support: in the ORB because it is needed for shutdown.
 389     // This is used by the first level server side subcontract.
 390     public abstract boolean isDuringDispatch() ;
 391     public abstract void startingDispatch();
 392     public abstract void finishedDispatch();
 393 
 394     /** Return this ORB's transient server ID.  This is needed for
 395      * initializing object adapters.
 396      */
 397     public abstract int getTransientServerId();
 398 
 399     public abstract ServiceContextRegistry getServiceContextRegistry() ;
 400 
 401     public abstract RequestDispatcherRegistry getRequestDispatcherRegistry();
 402 
 403     public abstract ORBData getORBData() ;
 404 
 405     public abstract void setClientDelegateFactory( ClientDelegateFactory factory ) ;
 406 
 407     public abstract ClientDelegateFactory getClientDelegateFactory() ;
 408 
 409     public abstract void setCorbaContactInfoListFactory( CorbaContactInfoListFactory factory ) ;
 410 
 411     public abstract CorbaContactInfoListFactory getCorbaContactInfoListFactory() ;
 412 
 413     // XXX These next 7 methods should be moved to a ResolverManager.
 414 
 415     /** Set the resolver used in this ORB.  This resolver will be used for list_initial_services
 416      * and resolve_initial_references.
 417      */
 418     public abstract void setResolver( Resolver resolver ) ;
 419 
 420     /** Get the resolver used in this ORB.  This resolver will be used for list_initial_services
 421      * and resolve_initial_references.
 422      */
 423     public abstract Resolver getResolver() ;
 424 
 425     /** Set the LocalResolver used in this ORB.  This LocalResolver is used for
 426      * register_initial_reference only.
 427      */
 428     public abstract void setLocalResolver( LocalResolver resolver ) ;
 429 
 430     /** Get the LocalResolver used in this ORB.  This LocalResolver is used for
 431      * register_initial_reference only.
 432      */
 433     public abstract LocalResolver getLocalResolver() ;
 434 
 435     /** Set the operation used in string_to_object calls.  The Operation must expect a
 436      * String and return an org.omg.CORBA.Object.
 437      */
 438     public abstract void setURLOperation( Operation stringToObject ) ;
 439 
 440     /** Get the operation used in string_to_object calls.  The Operation must expect a
 441      * String and return an org.omg.CORBA.Object.
 442      */
 443     public abstract Operation getURLOperation() ;
 444 
 445     /** Set the ServerRequestDispatcher that should be used for handling INS requests.
 446      */
 447     public abstract void setINSDelegate( CorbaServerRequestDispatcher insDelegate ) ;
 448 
 449     // XXX The next 5 operations should be moved to an IORManager.
 450 
 451     /** Factory finders for the various parts of the IOR: tagged components, tagged
 452      * profiles, and tagged profile templates.
 453      */
 454     public abstract TaggedComponentFactoryFinder getTaggedComponentFactoryFinder() ;
 455     public abstract IdentifiableFactoryFinder getTaggedProfileFactoryFinder() ;
 456     public abstract IdentifiableFactoryFinder getTaggedProfileTemplateFactoryFinder() ;
 457 
 458     public abstract ObjectKeyFactory getObjectKeyFactory() ;
 459     public abstract void setObjectKeyFactory( ObjectKeyFactory factory ) ;
 460 
 461     // Logging SPI
 462 
 463     /**
 464      * Returns the logger based on the category.
 465      */
 466     public Logger getLogger( String domain )
 467     {
 468         synchronized (this) {
 469             checkShutdownState();
 470         }
 471         ORBData odata = getORBData() ;
 472 
 473         // Determine the correct ORBId.  There are 3 cases:
 474         // 1. odata is null, which happens if we are getting a logger before
 475         //    ORB initialization is complete.  In this case we cannot determine
 476         //    the ORB ID (it's not known yet), so we set the ORBId to
 477         //    _INITIALIZING_.
 478         // 2. odata is not null, so initialization is complete, but ORBId is set to
 479         //    the default "".  To avoid a ".." in
 480         //    the log domain, we simply use _DEFAULT_ in this case.
 481         // 3. odata is not null, ORBId is not "": just use the ORBId.
 482         String ORBId ;
 483         if (odata == null)
 484             ORBId = "_INITIALIZING_" ;
 485         else {
 486             ORBId = odata.getORBId() ;
 487             if (ORBId.equals(""))
 488                 ORBId = "_DEFAULT_" ;
 489         }
 490 
 491         return getCORBALogger( ORBId, domain ) ;
 492     }
 493 
 494     public static Logger staticGetLogger( String domain )
 495     {
 496         return getCORBALogger( "_CORBA_", domain ) ;
 497     }
 498 
 499     private static Logger getCORBALogger( String ORBId, String domain )
 500     {
 501         String fqLogDomain = CORBALogDomains.TOP_LEVEL_DOMAIN + "." +
 502             ORBId + "." + domain;
 503 
 504         return Logger.getLogger( fqLogDomain, ORBConstants.LOG_RESOURCE_FILE );
 505     }
 506 
 507     /** get the log wrapper class (its type is dependent on the exceptionGroup) for the
 508      * given log domain and exception group in this ORB instance.
 509      */
 510     public LogWrapperBase getLogWrapper( String logDomain,
 511         String exceptionGroup, LogWrapperFactory factory )
 512     {
 513         StringPair key = new StringPair( logDomain, exceptionGroup ) ;
 514 
 515         LogWrapperBase logWrapper = (LogWrapperBase)wrapperMap.get( key );
 516         if (logWrapper == null) {
 517             logWrapper = factory.create( getLogger( logDomain ) );
 518             wrapperMap.put( key, logWrapper );
 519         }
 520 
 521         return logWrapper;
 522     }
 523 
 524     /** get the log wrapper class (its type is dependent on the exceptionGroup) for the
 525      * given log domain and exception group in this ORB instance.
 526      */
 527     public static LogWrapperBase staticGetLogWrapper( String logDomain,
 528         String exceptionGroup, LogWrapperFactory factory )
 529     {
 530         StringPair key = new StringPair( logDomain, exceptionGroup ) ;
 531 
 532         LogWrapperBase logWrapper = (LogWrapperBase)staticWrapperMap.get( key );
 533         if (logWrapper == null) {
 534             logWrapper = factory.create( staticGetLogger( logDomain ) );
 535             staticWrapperMap.put( key, logWrapper );
 536         }
 537 
 538         return logWrapper;
 539     }
 540 
 541     // get a reference to a ByteBufferPool, a pool of NIO ByteBuffers
 542     // NOTE: ByteBuffer pool must be unique per ORB, not per process.
 543     //       There can be more than one ORB per process.
 544     //       This method must also be inherited by both ORB and ORBSingleton.
 545     public ByteBufferPool getByteBufferPool()
 546     {
 547         synchronized (this) {
 548             checkShutdownState();
 549         }
 550         if (byteBufferPool == null)
 551             byteBufferPool = new ByteBufferPoolImpl(this);
 552 
 553         return byteBufferPool;
 554     }
 555 
 556     public abstract void setThreadPoolManager(ThreadPoolManager mgr);
 557 
 558     public abstract ThreadPoolManager getThreadPoolManager();
 559 
 560     public abstract CopierManager getCopierManager() ;
 561 }
 562 
 563 // End of file.