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java.rmi.dgc

Interface DGC

All Superinterfaces:
Remote
Known Implementing Classes:
DGCImpl, DGCImpl_Stub
public interface DGC
extends Remote
The DGC implementation is used for the server side during the distributed garbage collection. This interface contains the two methods: dirty and clean. A dirty call is made when a remote reference is unmarshaled in a client. A corresponding clean call is made by client it no longer uses that remote reference. A reference to a remote object is also automatically released after so called lease period that starts after the dirty call is received. It is the client's responsibility to renew the leases, by making additional dirty calls before such leases expire.

Method Summary

void
clean(ObjID[] ids, long sequenceNum, VMID vmid, boolean strong)
Mark the given objects as no longer used on the client side.
Lease
dirty(ObjID[] ids, long sequenceNum, Lease lease)
Mark the given objects referecnes as used on the client side.

Method Details

clean

public void clean(ObjID[] ids,
                  long sequenceNum,
                  VMID vmid,
                  boolean strong)
            throws RemoteException
Mark the given objects as no longer used on the client side.
Parameters:
ids - the ids of the objects that are no longer used.
sequenceNum - the number of the call (used to detect and discard late
vmid - the VMID of the client.
strong - make the "strong" clean call ("strong" calls are scheduled after the failed dirty calls).

dirty

public Lease dirty(ObjID[] ids,
                   long sequenceNum,
                   Lease lease)
            throws RemoteException
Mark the given objects referecnes as used on the client side.
Parameters:
ids - the ids of the used objects.
sequenceNum - the number of the call (used to detect and discard late calls).
lease - the requested lease
Returns:
the granted lease
DGC.java -- Copyright (c) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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