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| 1 /* | |
| 2 * Copyright (C) 2012 Google, 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 #ifndef RefCountedSupplement_h | |
| 27 #define RefCountedSupplement_h | |
| 28 | |
| 29 #include "platform/Supplementable.h" | |
| 30 #include "wtf/RefCounted.h" | |
| 31 #include "wtf/RefPtr.h" | |
| 32 | |
| 33 namespace blink { | |
| 34 | |
| 35 #if !ENABLE(OILPAN) | |
| 36 template<class T, class S> | |
| 37 class RefCountedSupplement : public RefCounted<S> { | |
| 38 public: | |
| 39 typedef RefCountedSupplement<T, S> ThisType; | |
| 40 | |
| 41 virtual ~RefCountedSupplement() { } | |
| 42 | |
| 43 class Wrapper final : public Supplement<T> { | |
| 44 public: | |
| 45 explicit Wrapper(PassRefPtr<ThisType> wrapped) : m_wrapped(wrapped) { } | |
| 46 virtual ~Wrapper() { } | |
| 47 #if ENABLE(SECURITY_ASSERT) | |
| 48 bool isRefCountedWrapper() const override { return true; } | |
| 49 #endif | |
| 50 ThisType* wrapped() const { return m_wrapped.get(); } | |
| 51 | |
| 52 private: | |
| 53 | |
| 54 RefPtr<ThisType> m_wrapped; | |
| 55 }; | |
| 56 | |
| 57 static void provideTo(Supplementable<T>& host, const char* key, PassRefPtr<T
hisType> supplement) | |
| 58 { | |
| 59 host.provideSupplement(key, adoptPtr(new Wrapper(supplement))); | |
| 60 } | |
| 61 | |
| 62 static ThisType* from(Supplementable<T>& host, const char* key) | |
| 63 { | |
| 64 Supplement<T>* found = static_cast<Supplement<T>*>(host.requireSupplemen
t(key)); | |
| 65 if (!found) | |
| 66 return 0; | |
| 67 ASSERT_WITH_SECURITY_IMPLICATION(found->isRefCountedWrapper()); | |
| 68 return static_cast<Wrapper*>(found)->wrapped(); | |
| 69 } | |
| 70 }; | |
| 71 #endif | |
| 72 | |
| 73 } // namespace blink | |
| 74 | |
| 75 #endif // RefCountedSupplement_h | |
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Chromium Code Reviews
Issue 1851743002:
Simplify Supplementables post Oilpan. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master