Initial revision
From-SVN: r104578
This commit is contained in:
Tom Tromey
@@ -0,0 +1,255 @@
|
||||
/* gnuIcCurrent.java --
|
||||
Copyright (C) 2005 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. */
|
||||
|
||||
|
||||
package gnu.CORBA.Interceptor;
|
||||
|
||||
import gnu.CORBA.CDR.cdrBufOutput;
|
||||
import gnu.CORBA.Poa.ORB_1_4;
|
||||
|
||||
import org.omg.CORBA.Any;
|
||||
import org.omg.CORBA.BAD_INV_ORDER;
|
||||
import org.omg.CORBA.TCKind;
|
||||
import org.omg.CORBA.portable.InputStream;
|
||||
import org.omg.CORBA.portable.ObjectImpl;
|
||||
import org.omg.PortableInterceptor.Current;
|
||||
import org.omg.PortableInterceptor.CurrentHelper;
|
||||
import org.omg.PortableInterceptor.InvalidSlot;
|
||||
|
||||
import java.util.Hashtable;
|
||||
import java.util.Iterator;
|
||||
import java.util.Map;
|
||||
|
||||
/**
|
||||
* Supports the "Interceptor current" concept, providing the slot value
|
||||
* information for the current thread. When making the invocation, this
|
||||
* information is copied to the Current, returned by ClientRequestInfo.
|
||||
*
|
||||
* There is only one instance of this class per ORB. It maintains a thread to
|
||||
* information map.
|
||||
*
|
||||
* @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
|
||||
*/
|
||||
public class gnuIcCurrent extends ObjectImpl implements Current
|
||||
{
|
||||
/**
|
||||
* Use serialVersionUID for interoperability.
|
||||
*/
|
||||
private static final long serialVersionUID = 1;
|
||||
|
||||
/**
|
||||
* The ORB, controllin this Current. It provides data about the required size
|
||||
* of the slot array.
|
||||
*/
|
||||
final ORB_1_4 orb;
|
||||
|
||||
/**
|
||||
* The table, mapping threads to records.
|
||||
*/
|
||||
private Hashtable threads = new Hashtable();
|
||||
|
||||
/**
|
||||
* An empty array when no slots are defined, computed once.
|
||||
*/
|
||||
static final Any[] NO_SLOTS = new Any[ 0 ];
|
||||
|
||||
/**
|
||||
* Create the IC current.
|
||||
*/
|
||||
public gnuIcCurrent(ORB_1_4 an_orb)
|
||||
{
|
||||
orb = an_orb;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the array of POA current repository ids.
|
||||
*
|
||||
* @return a single member array, containing value, returned by the
|
||||
* {@link CurrentHelper#id}, normally
|
||||
* "IDL:omg.org/PortableInterceptor/Current:1.0".
|
||||
*/
|
||||
public String[] _ids()
|
||||
{
|
||||
return new String[] { CurrentHelper.id() };
|
||||
}
|
||||
|
||||
/**
|
||||
* Add the entry to the map.
|
||||
*/
|
||||
public void put(Thread t, Any[] record)
|
||||
{
|
||||
synchronized (threads)
|
||||
{
|
||||
threads.put(t, record);
|
||||
|
||||
// Remove non-running threads, avoiding memory leak.
|
||||
if (threads.size() > 12)
|
||||
{
|
||||
Iterator it = threads.entrySet().iterator();
|
||||
while (it.hasNext())
|
||||
{
|
||||
Map.Entry e = (Map.Entry) it.next();
|
||||
Thread tx = (Thread) e.getKey();
|
||||
if (!tx.isAlive())
|
||||
{
|
||||
it.remove();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if this thread is registered.
|
||||
*/
|
||||
public boolean has(Thread t)
|
||||
{
|
||||
synchronized (threads)
|
||||
{
|
||||
return threads.containsKey(t);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove the entry from the map.
|
||||
*/
|
||||
public void remove(Thread t)
|
||||
{
|
||||
synchronized (threads)
|
||||
{
|
||||
threads.remove(t);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get array of all slots, as it is applicable for the current thread. If the
|
||||
* slots were not previously allocated, they are allocated during this call.
|
||||
*/
|
||||
Any[] get_slots()
|
||||
{
|
||||
Any[] r;
|
||||
synchronized (threads)
|
||||
{
|
||||
r = (Any[]) threads.get(Thread.currentThread());
|
||||
if (r == null)
|
||||
{
|
||||
r = new Any[ orb.icSlotSize ];
|
||||
|
||||
for (int i = 0; i < r.length; i++)
|
||||
{
|
||||
Any a = orb.create_any();
|
||||
a.type(orb.get_primitive_tc(TCKind.tk_null));
|
||||
r [ i ] = a;
|
||||
}
|
||||
|
||||
put(Thread.currentThread(), r);
|
||||
}
|
||||
return r;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get copu array of all slots, as it is applicable for the current thread. If
|
||||
* the slots were not previously allocated, they are allocated during this
|
||||
* call.
|
||||
*/
|
||||
public Any[] clone_slots()
|
||||
{
|
||||
if (orb.icSlotSize == 0)
|
||||
{
|
||||
return NO_SLOTS;
|
||||
}
|
||||
else
|
||||
{
|
||||
Any[] r = get_slots();
|
||||
Any[] copy = new Any[ r.length ];
|
||||
|
||||
cdrBufOutput buf = new cdrBufOutput();
|
||||
buf.setOrb(orb);
|
||||
|
||||
for (int i = 0; i < copy.length; i++)
|
||||
{
|
||||
r [ i ].write_value(buf);
|
||||
}
|
||||
|
||||
InputStream input = buf.create_input_stream();
|
||||
|
||||
for (int i = 0; i < copy.length; i++)
|
||||
{
|
||||
copy [ i ] = orb.create_any();
|
||||
copy [ i ].read_value(input, r [ i ].type());
|
||||
}
|
||||
|
||||
return copy;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get value for the slot with the given id. If the array of Currents has not
|
||||
* been yet allocated for the current thread, it is allocated during the
|
||||
* invocation of this method.
|
||||
*/
|
||||
public Any get_slot(int slot_id) throws InvalidSlot, BAD_INV_ORDER
|
||||
{
|
||||
try
|
||||
{
|
||||
return get_slots() [ slot_id ];
|
||||
}
|
||||
catch (ArrayIndexOutOfBoundsException e)
|
||||
{
|
||||
throw new InvalidSlot("Slot " + slot_id);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Set value for the slot with the given id. If the array of Currents has not
|
||||
* been yet allocated for the current thread, it is allocated during the
|
||||
* invocation of this method.
|
||||
*/
|
||||
public void set_slot(int slot_id, Any data)
|
||||
throws InvalidSlot, BAD_INV_ORDER
|
||||
{
|
||||
try
|
||||
{
|
||||
get_slots() [ slot_id ] = data;
|
||||
}
|
||||
catch (ArrayIndexOutOfBoundsException e)
|
||||
{
|
||||
throw new InvalidSlot("Slot " + slot_id);
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user