/*

 * 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;

    }

}