/*

  * Copyright (C) 2004-2012 David Anderson

  *

  * This file is part of SourcePawn.

  *

  * SourcePawn 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 3 of the License, or (at your option)

  * any later version.

  * 

  * SourcePawn 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

  * SourcePawn. If not, see http://www.gnu.org/licenses/.

  */

 #include "GlobalRoots.h"

 #include "Zone.h"

 #include "Spaces-inl.h"

 #include "Heap-inl.h"

 using namespace ke;

 GlobalRoots::GlobalRoots(Zone *zone)

   : zone_(zone)

 {

 }

 GlobalRoots::~GlobalRoots()

 {

     InlineList<HeapRoot>::iterator iter = roots_.begin();

     while (iter != roots_.end()) {

 		HeapRoot *root = *iter;

         iter = roots_.erase(iter);

 		delete root;

     }

 }

 bool

 GlobalRoots::initialize()

 {

     return true;

 }

 void

 GlobalRoots::accept(VirtualObjectVisitor *visitor)

 {

     for (InlineList<HeapRoot>::iterator iter = roots_.begin(); iter != roots_.end(); iter++)

         visitor->visit(&iter->obj);

 }

 HeapRoot *

 GlobalRoots::create(Handle<Object> obj)

 {

     HeapRoot *root = new HeapRoot();

     if (!root) {

         ZONE()->reportOutOfMemory();

         return NULL;

     }

     root->obj = obj;

     root->refcount = 1;

     roots_.append(root);

     return root;

 }

 void

 GlobalRoots::incref(HeapRoot *root)

 {

     root->refcount++;

 }

 void

 GlobalRoots::decref(HeapRoot *root)

 {

     assert(root->refcount > 0);

     if (--root->refcount == 0) {

         roots_.remove(root);

         delete root;

     }

 }