gfx/skia/trunk/include/core/SkTRegistry.h@6474c204b198 (annotated)
gfx/skia/trunk/include/core/SkTRegistry.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | |
| michael@0 | 2 | /* |
| michael@0 | 3 | * Copyright 2009 The Android Open Source Project |
| michael@0 | 4 | * |
| michael@0 | 5 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 6 | * found in the LICENSE file. |
| michael@0 | 7 | */ |
| michael@0 | 8 | |
| michael@0 | 9 | |
| michael@0 | 10 | #ifndef SkTRegistry_DEFINED |
| michael@0 | 11 | #define SkTRegistry_DEFINED |
| michael@0 | 12 | |
| michael@0 | 13 | #include "SkTypes.h" |
| michael@0 | 14 | |
| michael@0 | 15 | /** Template class that registers itself (in the constructor) into a linked-list |
| michael@0 | 16 | and provides a function-pointer. This can be used to auto-register a set of |
| michael@0 | 17 | services, e.g. a set of image codecs. |
| michael@0 | 18 | */ |
| michael@0 | 19 | template <typename T> class SkTRegistry : SkNoncopyable { |
| michael@0 | 20 | public: |
| michael@0 | 21 | typedef T Factory; |
| michael@0 | 22 | |
| michael@0 | 23 | explicit SkTRegistry(T fact) : fFact(fact) { |
| michael@0 | 24 | #ifdef SK_BUILD_FOR_ANDROID |
| michael@0 | 25 | // work-around for double-initialization bug |
| michael@0 | 26 | { |
| michael@0 | 27 | SkTRegistry* reg = gHead; |
| michael@0 | 28 | while (reg) { |
| michael@0 | 29 | if (reg == this) { |
| michael@0 | 30 | return; |
| michael@0 | 31 | } |
| michael@0 | 32 | reg = reg->fChain; |
| michael@0 | 33 | } |
| michael@0 | 34 | } |
| michael@0 | 35 | #endif |
| michael@0 | 36 | fChain = gHead; |
| michael@0 | 37 | gHead = this; |
| michael@0 | 38 | } |
| michael@0 | 39 | |
| michael@0 | 40 | static const SkTRegistry* Head() { return gHead; } |
| michael@0 | 41 | |
| michael@0 | 42 | const SkTRegistry* next() const { return fChain; } |
| michael@0 | 43 | const Factory& factory() const { return fFact; } |
| michael@0 | 44 | |
| michael@0 | 45 | private: |
| michael@0 | 46 | Factory fFact; |
| michael@0 | 47 | SkTRegistry* fChain; |
| michael@0 | 48 | |
| michael@0 | 49 | static SkTRegistry* gHead; |
| michael@0 | 50 | }; |
| michael@0 | 51 | |
| michael@0 | 52 | // The caller still needs to declare an instance of this somewhere |
| michael@0 | 53 | template <typename T> SkTRegistry<T>* SkTRegistry<T>::gHead; |
| michael@0 | 54 | |
| michael@0 | 55 | #endif |
