/*

  * Copyright (C) 2012 David Anderson

  *

  * This file is part of JITCraft.

  *

  * JITCraft 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.

  * 

  * Foobar 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

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

  */

 #include "Heap.h"

 #include "Heap-inl.h"

 #include "Spaces-inl.h"

 using namespace jc;

 Heap::Heap(Zone *zone)

   : zone_(zone)

 {

 }

 bool

 Heap::initialize()

 {

     if (!lifoSpace_.initialize())

         return false;

     if (!oldSpace_.initialize())

         return false;

     if (!mapSpace_.initialize())

         return false;

     if ((metaMap_ = allocateMap(MapKind_Meta, sizeof(Map))) == NULL)

         return false;

     metaMap_->init(metaMap_);

     return true;

 }

 Map *

 Heap::allocateMap(MapKind kind, size_t bytes)

 {

     size_t actualBytes = Align(bytes, kObjectAlignment);

     Address addr = mapSpace_.allocate(actualBytes);

     if (!addr) {

         assert(false);

         return NULL;

     }

     // Note that we use a NULL type initially, and reinterpret-cast to get

     // the Type pointer, so we can allocate the self-referencing meta type.

     Object *obj = InitAddressIntoObject(addr, NULL);

     Map *map = reinterpret_cast<Map *>(obj);

     map->setKind(kind);

     return map;

 }

 Address

 Heap::newOldObject(size_t bytes)

 {

     return oldSpace_.allocate(bytes);

 }