mirror of https://github.com/axmolengine/axmol.git
120 lines
3.7 KiB
C++
120 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is SpiderMonkey code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Gregor Wagner <anygregor@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef jscell_h___
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#define jscell_h___
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#include "jspubtd.h"
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struct JSCompartment;
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namespace js {
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namespace gc {
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struct ArenaHeader;
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struct Chunk;
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/* The GC allocation kinds. */
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enum AllocKind {
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FINALIZE_OBJECT0,
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FINALIZE_OBJECT0_BACKGROUND,
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FINALIZE_OBJECT2,
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FINALIZE_OBJECT2_BACKGROUND,
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FINALIZE_OBJECT4,
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FINALIZE_OBJECT4_BACKGROUND,
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FINALIZE_OBJECT8,
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FINALIZE_OBJECT8_BACKGROUND,
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FINALIZE_OBJECT12,
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FINALIZE_OBJECT12_BACKGROUND,
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FINALIZE_OBJECT16,
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FINALIZE_OBJECT16_BACKGROUND,
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FINALIZE_OBJECT_LAST = FINALIZE_OBJECT16_BACKGROUND,
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FINALIZE_SCRIPT,
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FINALIZE_SHAPE,
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FINALIZE_BASE_SHAPE,
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FINALIZE_TYPE_OBJECT,
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#if JS_HAS_XML_SUPPORT
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FINALIZE_XML,
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#endif
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FINALIZE_SHORT_STRING,
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FINALIZE_STRING,
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FINALIZE_EXTERNAL_STRING,
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FINALIZE_LAST = FINALIZE_EXTERNAL_STRING
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};
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static const unsigned FINALIZE_LIMIT = FINALIZE_LAST + 1;
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static const unsigned FINALIZE_OBJECT_LIMIT = FINALIZE_OBJECT_LAST + 1;
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/*
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* Live objects are marked black. How many other additional colors are available
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* depends on the size of the GCThing. Objects marked gray are eligible for
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* cycle collection.
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*/
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static const uint32_t BLACK = 0;
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static const uint32_t GRAY = 1;
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/*
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* A GC cell is the base class for all GC things.
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*/
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struct Cell {
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static const size_t CellShift = 3;
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static const size_t CellSize = size_t(1) << CellShift;
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static const size_t CellMask = CellSize - 1;
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inline uintptr_t address() const;
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inline ArenaHeader *arenaHeader() const;
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inline Chunk *chunk() const;
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inline AllocKind getAllocKind() const;
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JS_ALWAYS_INLINE bool isMarked(uint32_t color = BLACK) const;
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JS_ALWAYS_INLINE bool markIfUnmarked(uint32_t color = BLACK) const;
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JS_ALWAYS_INLINE void unmark(uint32_t color) const;
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inline JSCompartment *compartment() const;
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#ifdef DEBUG
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inline bool isAligned() const;
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#endif
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};
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} /* namespace gc */
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} /* namespace js */
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#endif /* jscell_h___ */
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