1/*
2 * Copyright (C) 2009 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "RopeImpl.h"
28
29namespace JSC {
30
31void RopeImpl::derefFibersNonRecursive(Vector<RopeImpl*, 32>& workQueue)
32{
33    unsigned fiberCount = this->fiberCount();
34    for (unsigned i = 0; i < fiberCount; ++i) {
35        Fiber& fiber = m_fibers[i];
36        if (isRope(fiber)) {
37            RopeImpl* nextRope = static_cast<RopeImpl*>(fiber);
38            if (nextRope->hasOneRef())
39                workQueue.append(nextRope);
40            else
41                nextRope->deref();
42        } else
43            static_cast<StringImpl*>(fiber)->deref();
44    }
45}
46
47void RopeImpl::destructNonRecursive()
48{
49    Vector<RopeImpl*, 32> workQueue;
50
51    derefFibersNonRecursive(workQueue);
52    delete this;
53
54    while (!workQueue.isEmpty()) {
55        RopeImpl* rope = workQueue.last();
56        workQueue.removeLast();
57        rope->derefFibersNonRecursive(workQueue);
58        delete rope;
59    }
60}
61
62} // namespace JSC
63