The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/parser/html/nsHtml5OwningUTF16Buffer.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,87 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +#include "nsHtml5OwningUTF16Buffer.h"
     1.9 +
    1.10 +nsHtml5OwningUTF16Buffer::nsHtml5OwningUTF16Buffer(char16_t* aBuffer)
    1.11 +  : nsHtml5UTF16Buffer(aBuffer, 0),
    1.12 +    next(nullptr),
    1.13 +    key(nullptr)
    1.14 +{
    1.15 +  MOZ_COUNT_CTOR(nsHtml5OwningUTF16Buffer);
    1.16 +}
    1.17 +
    1.18 +nsHtml5OwningUTF16Buffer::nsHtml5OwningUTF16Buffer(void* aKey)
    1.19 +  : nsHtml5UTF16Buffer(nullptr, 0),
    1.20 +    next(nullptr),
    1.21 +    key(aKey)
    1.22 +{
    1.23 +  MOZ_COUNT_CTOR(nsHtml5OwningUTF16Buffer);
    1.24 +}
    1.25 +
    1.26 +nsHtml5OwningUTF16Buffer::~nsHtml5OwningUTF16Buffer()
    1.27 +{
    1.28 +  MOZ_COUNT_DTOR(nsHtml5OwningUTF16Buffer);
    1.29 +  DeleteBuffer();
    1.30 +
    1.31 +  // This is to avoid dtor recursion on 'next', bug 706932.
    1.32 +  nsRefPtr<nsHtml5OwningUTF16Buffer> tail;
    1.33 +  tail.swap(next);
    1.34 +  while (tail && tail->mRefCnt == 1) {
    1.35 +    nsRefPtr<nsHtml5OwningUTF16Buffer> tmp;
    1.36 +    tmp.swap(tail->next);
    1.37 +    tail.swap(tmp);
    1.38 +  }
    1.39 +}
    1.40 +
    1.41 +// static
    1.42 +already_AddRefed<nsHtml5OwningUTF16Buffer>
    1.43 +nsHtml5OwningUTF16Buffer::FalliblyCreate(int32_t aLength)
    1.44 +{
    1.45 +  const mozilla::fallible_t fallible = mozilla::fallible_t();
    1.46 +  char16_t* newBuf = new (fallible) char16_t[aLength];
    1.47 +  if (!newBuf) {
    1.48 +    return nullptr;
    1.49 +  }
    1.50 +  nsRefPtr<nsHtml5OwningUTF16Buffer> newObj =
    1.51 +    new (fallible) nsHtml5OwningUTF16Buffer(newBuf);
    1.52 +  if (!newObj) {
    1.53 +    delete[] newBuf;
    1.54 +    return nullptr;
    1.55 +  }
    1.56 +  return newObj.forget();
    1.57 +}
    1.58 +
    1.59 +void
    1.60 +nsHtml5OwningUTF16Buffer::Swap(nsHtml5OwningUTF16Buffer* aOther)
    1.61 +{
    1.62 +  nsHtml5UTF16Buffer::Swap(aOther);
    1.63 +}
    1.64 +
    1.65 +
    1.66 +// Not using macros for AddRef and Release in order to be able to refcount on
    1.67 +// and create on different threads.
    1.68 +
    1.69 +nsrefcnt
    1.70 +nsHtml5OwningUTF16Buffer::AddRef()
    1.71 +{
    1.72 +  NS_PRECONDITION(int32_t(mRefCnt) >= 0, "Illegal refcount.");
    1.73 +  ++mRefCnt;
    1.74 +  NS_LOG_ADDREF(this, mRefCnt, "nsHtml5OwningUTF16Buffer", sizeof(*this));
    1.75 +  return mRefCnt;
    1.76 +}
    1.77 +
    1.78 +nsrefcnt
    1.79 +nsHtml5OwningUTF16Buffer::Release()
    1.80 +{
    1.81 +  NS_PRECONDITION(0 != mRefCnt, "Release without AddRef.");
    1.82 +  --mRefCnt;
    1.83 +  NS_LOG_RELEASE(this, mRefCnt, "nsHtml5OwningUTF16Buffer");
    1.84 +  if (mRefCnt == 0) {
    1.85 +    mRefCnt = 1; /* stabilize */
    1.86 +    delete this;
    1.87 +    return 0;
    1.88 +  }
    1.89 +  return mRefCnt;
    1.90 +}