corba/src/share/classes/com/sun/corba/se/impl/interceptors/ThreadCurrentStack.sjava
--- a/corba/src/share/classes/com/sun/corba/se/impl/interceptors/ThreadCurrentStack.sjava Fri Aug 09 14:24:17 2013 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,164 +0,0 @@
-/*
- * Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code 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
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package com.sun.corba.se.impl.interceptors;
-
-import com.sun.corba.se.impl.corba.AnyImpl;
-import org.omg.PortableInterceptor.Current;
-import org.omg.PortableInterceptor.InvalidSlot;
-
-import com.sun.corba.se.impl.util.MinorCodes;
-import com.sun.corba.se.impl.core.ORB;
-
-/**
- * ThreadCurrentStack is the container of PICurrent instances for each thread
- */
-public class ThreadCurrentStack
-{
- // PICurrentPool is the container for reusable PICurrents
- private class PICurrentPool {
-
- // Contains a list of reusable PICurrents
- private java.util.ArrayList pool;
-
- // High water mark for the pool
- // If the pool size reaches this limit then putPICurrent will
- // not put PICurrent to the pool.
- private static final int HIGH_WATER_MARK = 5;
-
- // currentIndex points to the last PICurrent in the list
- private int currentIndex;
-
- PICurrentPool( ) {
- pool = new java.util.ArrayList( HIGH_WATER_MARK );
- currentIndex = 0;
- }
-
- /**
- * Puts PICurrent to the re-usable pool.
- */
- void putPICurrent( PICurrent current ) {
- // If there are enough PICurrents in the pool, then don't add
- // this current to the pool.
- if( currentIndex >= HIGH_WATER_MARK ) {
- return;
- }
- pool.add(currentIndex , current);
- currentIndex++;
- }
-
- /**
- * Gets PICurrent from the re-usable pool.
- */
- PICurrent getPICurrent( ) {
- // If there are no entries in the pool then return null
- if( currentIndex == 0 ) {
- return null;
- }
- // Works like a stack, Gets the last one added first
- currentIndex--;
- return (PICurrent) pool.get(currentIndex);
- }
- }
-
- // Contains all the active PICurrents for each thread.
- // The ArrayList is made to behave like a stack.
- private java.util.ArrayList currentContainer;
-
- // Keeps track of number of PICurrents in the stack.
- private int currentIndex;
-
- // For Every Thread there will be a pool of re-usable ThreadCurrent's
- // stored in PICurrentPool
- private PICurrentPool currentPool;
-
- // The orb associated with this ThreadCurrentStack
- private ORB piOrb;
-
- /**
- * Constructs the stack and and PICurrentPool
- */
- ThreadCurrentStack( ORB piOrb, PICurrent current ) {
- this.piOrb = piOrb;
- currentIndex = 0;
- currentContainer = new java.util.ArrayList( );
- currentPool = new PICurrentPool( );
- currentContainer.add( currentIndex, current );
- currentIndex++;
- }
-
-
- /**
- * pushPICurrent goes through the following steps
- * 1: Checks to see if there is any PICurrent in PICurrentPool
- * If present then use that instance to push into the ThreadCurrentStack
- *
- * 2:If there is no PICurrent in the pool, then creates a new one and pushes
- * that into the ThreadCurrentStack
- */
- void pushPICurrent( ) {
- PICurrent current = currentPool.getPICurrent( );
- if( current == null ) {
- // get an existing PICurrent to get the slotSize
- PICurrent currentTemp = peekPICurrent();
- current = new PICurrent( piOrb, currentTemp.getSlotSize( ));
- }
- currentContainer.add( currentIndex, current );
- currentIndex++;
- }
-
- /**
- * popPICurrent does the following
- * 1: pops the top PICurrent in the ThreadCurrentStack
- *
- * 2: resets the slots in the PICurrent which resets the slotvalues to
- * null if there are any previous sets.
- *
- * 3: pushes the reset PICurrent into the PICurrentPool to reuse
- */
- void popPICurrent( ) {
- // Do not pop the PICurrent, If there is only one.
- // This should not happen, But an extra check for safety.
- if( currentIndex <= 1 ) {
- throw new org.omg.CORBA.INTERNAL(
- "Cannot pop the only PICurrent in the stack",
- MinorCodes.CANT_POP_ONLY_CURRENT_2,
- CompletionStatus.COMPLETED_NO );
- }
- currentIndex--;
- PICurrent current = (PICurrent)currentContainer.get( currentIndex );
- current.resetSlots( );
- currentPool.putPICurrent( current );
- }
-
- /**
- * peekPICurrent gets the top PICurrent in the ThreadCurrentStack without
- * popping.
- */
- PICurrent peekPICurrent( ) {
- return (PICurrent) currentContainer.get( currentIndex - 1);
- }
-
-}