The Tor Browser / file comparison
comparison: gfx/skia/trunk/include/core/SkTRegistry.h
gfx/skia/trunk/include/core/SkTRegistry.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:d6c40c01ba81 |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2009 The Android Open Source Project | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 | |
| 10 #ifndef SkTRegistry_DEFINED | |
| 11 #define SkTRegistry_DEFINED | |
| 12 | |
| 13 #include "SkTypes.h" | |
| 14 | |
| 15 /** Template class that registers itself (in the constructor) into a linked-list | |
| 16 and provides a function-pointer. This can be used to auto-register a set of | |
| 17 services, e.g. a set of image codecs. | |
| 18 */ | |
| 19 template <typename T> class SkTRegistry : SkNoncopyable { | |
| 20 public: | |
| 21 typedef T Factory; | |
| 22 | |
| 23 explicit SkTRegistry(T fact) : fFact(fact) { | |
| 24 #ifdef SK_BUILD_FOR_ANDROID | |
| 25 // work-around for double-initialization bug | |
| 26 { | |
| 27 SkTRegistry* reg = gHead; | |
| 28 while (reg) { | |
| 29 if (reg == this) { | |
| 30 return; | |
| 31 } | |
| 32 reg = reg->fChain; | |
| 33 } | |
| 34 } | |
| 35 #endif | |
| 36 fChain = gHead; | |
| 37 gHead = this; | |
| 38 } | |
| 39 | |
| 40 static const SkTRegistry* Head() { return gHead; } | |
| 41 | |
| 42 const SkTRegistry* next() const { return fChain; } | |
| 43 const Factory& factory() const { return fFact; } | |
| 44 | |
| 45 private: | |
| 46 Factory fFact; | |
| 47 SkTRegistry* fChain; | |
| 48 | |
| 49 static SkTRegistry* gHead; | |
| 50 }; | |
| 51 | |
| 52 // The caller still needs to declare an instance of this somewhere | |
| 53 template <typename T> SkTRegistry<T>* SkTRegistry<T>::gHead; | |
| 54 | |
| 55 #endif |
