parser/html/nsHtml5OwningUTF16Buffer.cpp@925c144e1f1f (annotated)
parser/html/nsHtml5OwningUTF16Buffer.cpp
Fri, 16 Jan 2015 18:13:44 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Fri, 16 Jan 2015 18:13:44 +0100
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
- permissions
- -rw-r--r--
Integrate suggestion from review to improve consistency with existing code.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #include "nsHtml5OwningUTF16Buffer.h" |
| michael@0 | 6 | |
| michael@0 | 7 | nsHtml5OwningUTF16Buffer::nsHtml5OwningUTF16Buffer(char16_t* aBuffer) |
| michael@0 | 8 | : nsHtml5UTF16Buffer(aBuffer, 0), |
| michael@0 | 9 | next(nullptr), |
| michael@0 | 10 | key(nullptr) |
| michael@0 | 11 | { |
| michael@0 | 12 | MOZ_COUNT_CTOR(nsHtml5OwningUTF16Buffer); |
| michael@0 | 13 | } |
| michael@0 | 14 | |
| michael@0 | 15 | nsHtml5OwningUTF16Buffer::nsHtml5OwningUTF16Buffer(void* aKey) |
| michael@0 | 16 | : nsHtml5UTF16Buffer(nullptr, 0), |
| michael@0 | 17 | next(nullptr), |
| michael@0 | 18 | key(aKey) |
| michael@0 | 19 | { |
| michael@0 | 20 | MOZ_COUNT_CTOR(nsHtml5OwningUTF16Buffer); |
| michael@0 | 21 | } |
| michael@0 | 22 | |
| michael@0 | 23 | nsHtml5OwningUTF16Buffer::~nsHtml5OwningUTF16Buffer() |
| michael@0 | 24 | { |
| michael@0 | 25 | MOZ_COUNT_DTOR(nsHtml5OwningUTF16Buffer); |
| michael@0 | 26 | DeleteBuffer(); |
| michael@0 | 27 | |
| michael@0 | 28 | // This is to avoid dtor recursion on 'next', bug 706932. |
| michael@0 | 29 | nsRefPtr<nsHtml5OwningUTF16Buffer> tail; |
| michael@0 | 30 | tail.swap(next); |
| michael@0 | 31 | while (tail && tail->mRefCnt == 1) { |
| michael@0 | 32 | nsRefPtr<nsHtml5OwningUTF16Buffer> tmp; |
| michael@0 | 33 | tmp.swap(tail->next); |
| michael@0 | 34 | tail.swap(tmp); |
| michael@0 | 35 | } |
| michael@0 | 36 | } |
| michael@0 | 37 | |
| michael@0 | 38 | // static |
| michael@0 | 39 | already_AddRefed<nsHtml5OwningUTF16Buffer> |
| michael@0 | 40 | nsHtml5OwningUTF16Buffer::FalliblyCreate(int32_t aLength) |
| michael@0 | 41 | { |
| michael@0 | 42 | const mozilla::fallible_t fallible = mozilla::fallible_t(); |
| michael@0 | 43 | char16_t* newBuf = new (fallible) char16_t[aLength]; |
| michael@0 | 44 | if (!newBuf) { |
| michael@0 | 45 | return nullptr; |
| michael@0 | 46 | } |
| michael@0 | 47 | nsRefPtr<nsHtml5OwningUTF16Buffer> newObj = |
| michael@0 | 48 | new (fallible) nsHtml5OwningUTF16Buffer(newBuf); |
| michael@0 | 49 | if (!newObj) { |
| michael@0 | 50 | delete[] newBuf; |
| michael@0 | 51 | return nullptr; |
| michael@0 | 52 | } |
| michael@0 | 53 | return newObj.forget(); |
| michael@0 | 54 | } |
| michael@0 | 55 | |
| michael@0 | 56 | void |
| michael@0 | 57 | nsHtml5OwningUTF16Buffer::Swap(nsHtml5OwningUTF16Buffer* aOther) |
| michael@0 | 58 | { |
| michael@0 | 59 | nsHtml5UTF16Buffer::Swap(aOther); |
| michael@0 | 60 | } |
| michael@0 | 61 | |
| michael@0 | 62 | |
| michael@0 | 63 | // Not using macros for AddRef and Release in order to be able to refcount on |
| michael@0 | 64 | // and create on different threads. |
| michael@0 | 65 | |
| michael@0 | 66 | nsrefcnt |
| michael@0 | 67 | nsHtml5OwningUTF16Buffer::AddRef() |
| michael@0 | 68 | { |
| michael@0 | 69 | NS_PRECONDITION(int32_t(mRefCnt) >= 0, "Illegal refcount."); |
| michael@0 | 70 | ++mRefCnt; |
| michael@0 | 71 | NS_LOG_ADDREF(this, mRefCnt, "nsHtml5OwningUTF16Buffer", sizeof(*this)); |
| michael@0 | 72 | return mRefCnt; |
| michael@0 | 73 | } |
| michael@0 | 74 | |
| michael@0 | 75 | nsrefcnt |
| michael@0 | 76 | nsHtml5OwningUTF16Buffer::Release() |
| michael@0 | 77 | { |
| michael@0 | 78 | NS_PRECONDITION(0 != mRefCnt, "Release without AddRef."); |
| michael@0 | 79 | --mRefCnt; |
| michael@0 | 80 | NS_LOG_RELEASE(this, mRefCnt, "nsHtml5OwningUTF16Buffer"); |
| michael@0 | 81 | if (mRefCnt == 0) { |
| michael@0 | 82 | mRefCnt = 1; /* stabilize */ |
| michael@0 | 83 | delete this; |
| michael@0 | 84 | return 0; |
| michael@0 | 85 | } |
| michael@0 | 86 | return mRefCnt; |
| michael@0 | 87 | } |
