1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 * vim: set ts=4 sw=4 et tw=99 ft=cpp:
4 * ***** BEGIN LICENSE BLOCK *****
5 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
7 * The contents of this file are subject to the Mozilla Public License Version
8 * 1.1 (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
10 * http://www.mozilla.org/MPL/
12 * Software distributed under the License is distributed on an "AS IS" basis,
13 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14 * for the specific language governing rights and limitations under the
17 * The Original Code is Mozilla SpiderMonkey JavaScript 1.9.1 code, released
20 * The Initial Developer of the Original Code is
21 * The Mozilla Foundation
24 * Igor Bukanov <igor@mir2.org>
26 * Alternatively, the contents of this file may be used under the terms of
27 * either of the GNU General Public License Version 2 or later (the "GPL"),
28 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29 * in which case the provisions of the GPL or the LGPL are applicable instead
30 * of those above. If you wish to allow use of your version of this file only
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33 * decision by deleting the provisions above and replace them with the notice
34 * and other provisions required by the GPL or the LGPL. If you do not delete
35 * the provisions above, a recipient may use your version of this file under
36 * the terms of any one of the MPL, the GPL or the LGPL.
38 * ***** END LICENSE BLOCK ***** */
48 #if defined(WINCE) && !defined(MOZ_MEMORY_WINCE6)
49 const size_t GC_CHUNK_SHIFT = 21;
51 const size_t GC_CHUNK_SHIFT = 20;
54 const size_t GC_CHUNK_SIZE = size_t(1) << GC_CHUNK_SHIFT;
55 const size_t GC_CHUNK_MASK = GC_CHUNK_SIZE - 1;
63 class GCChunkAllocator {
68 void *chunk = doAlloc();
69 JS_ASSERT(!(reinterpret_cast<jsuword>(chunk) & GC_CHUNK_MASK));
73 void free(void *chunk) {
75 JS_ASSERT(!(reinterpret_cast<jsuword>(chunk) & GC_CHUNK_MASK));
80 virtual void *doAlloc() {
81 return AllocGCChunk();
84 virtual void doFree(void *chunk) {
88 /* No copy or assignment semantics. */
89 GCChunkAllocator(const GCChunkAllocator &);
90 void operator=(const GCChunkAllocator &);
93 extern GCChunkAllocator defaultGCChunkAllocator;
97 #endif /* jsgchunk_h__ */