LuaState 集合维护有问题，当有多个LuaState，关闭再创建的时候会有问题

[xiaoyaofeng]

LuaStateFactory.java update

/*

• $Id: LuaStateFactory.java,v 1.4 2006/12/22 14:06:40 thiago Exp $
• Copyright (C) 2003-2007 Kepler Project. *
• Permission is hereby granted, free of charge, to any person obtaining
• a copy of this software and associated documentation files (the
• "Software"), to deal in the Software without restriction, including
• without limitation the rights to use, copy, modify, merge, publish,
• distribute, sublicense, and/or sell copies of the Software, and to
• permit persons to whom the Software is furnished to do so, subject to
• the following conditions: *
• The above copyright notice and this permission notice shall be
• included in all copies or substantial portions of the Software. *
• THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
• EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
• MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
• IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
• CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
• TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
• SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */

package org.keplerproject.luajava;

import java.util.ArrayList; import java.util.List;

/**

• This class is responsible for instantiating new LuaStates.

• When a new LuaState is instantiated it is put into a List

• and an index is returned. This index is registred in Lua

• and it is used to find the right LuaState when lua calls

• a Java Function.

• @author Thiago Ponte / public final class LuaStateFactory { /*

  • Array with all luaState's instances */ private static final List states = new ArrayList();

  /**

  • Non-public constructor. */ private LuaStateFactory() {}

  /**

  • Method that creates a new instance of LuaState

  • @return LuaState */ public synchronized static LuaState newLuaState() { int idx = getNextStateIndex(); LuaState L = new LuaState(idx);

    int size = states.size(); if (idx>=size ) {//当集合为空的时候 i== 0 && size == 0 states.add(idx, L); }else if (idx<size && idx >= 0) {//当集合的 states.set(idx, L) ; } else { //异常情况 } return L; }

  /**

  • Returns a existing instance of LuaState
  • @param index
  • @return LuaState */ public synchronized static LuaState getExistingState(int index) { return (LuaState) states.get(index); }

  /**

  • Receives a existing LuaState and checks if it exists in the states list.

  • If it doesn't exist adds it to the list.

  • @param L

  • @return int */ public synchronized static int insertLuaState(LuaState L) { int idx; for (idx = 0 ; idx < states.size() ; idx++) { LuaState state = (LuaState) states.get(idx);

    if (state != null)
    {
        if (state.getCPtrPeer() == L.getCPtrPeer())
            return idx;
    }
    

    }

    idx = getNextStateIndex();

    int size = states.size(); if (idx>=size ) {//当集合为空的时候 i== 0 && size == 0 states.add(idx, L); }else if (idx<size && idx >= 0) {// states.set(idx, L) ; } else { //异常情况 }

    return idx; }

  /**

  • removes the luaState from the states list
  • @param idx */ public synchronized static void removeLuaState(int idx) { int size = states.size(); if (idx<size) { states.set(idx, null); }else { states.add(idx, null); } }

  /**

  • Get next available index

  • @return int */ private synchronized static int getNextStateIndex() { int i; for ( i=0 ; i < states.size() && states.get(i) != null ; i++ );

    return i; } }