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Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/CORBA/Interceptor/gnuIcCurrent.java')
| -rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/CORBA/Interceptor/gnuIcCurrent.java | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/CORBA/Interceptor/gnuIcCurrent.java b/gcc-4.4.3/libjava/classpath/gnu/CORBA/Interceptor/gnuIcCurrent.java new file mode 100644 index 000000000..a33afc336 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/CORBA/Interceptor/gnuIcCurrent.java @@ -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.BufferedCdrOutput; +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 ]; + + BufferedCdrOutput buf = new BufferedCdrOutput(); + 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); + } + } +}
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