reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame^] | 1 | /* libs/graphics/sgl/SkTemplatesPriv.h |
| 2 | ** |
| 3 | ** Copyright 2006, The Android Open Source Project |
| 4 | ** |
| 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
| 8 | ** |
| 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | ** |
| 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
| 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #ifndef SkTemplatesPriv_DEFINED |
| 19 | #define SkTemplatesPriv_DEFINED |
| 20 | |
| 21 | #include "SkTemplates.h" |
| 22 | |
| 23 | //////////////////////////////////////////////////////////////////////////////// |
| 24 | |
| 25 | #ifdef SK_BUILD_FOR_WIN32 |
| 26 | #define SK_PLACEMENT_NEW(result, classname, storage, storageSize) \ |
| 27 | result = SkNEW(classname) |
| 28 | |
| 29 | #define SK_PLACEMENT_NEW_ARGS(result, classname, storage, storageSize, args) \ |
| 30 | result = SkNEW_ARGS(classname, args) |
| 31 | #else |
| 32 | #include <new> |
| 33 | #define SK_PLACEMENT_NEW(result, classname, storage, storagesize) \ |
| 34 | do { \ |
| 35 | if (storagesize) \ |
| 36 | { \ |
| 37 | SkASSERT(storageSize >= sizeof(classname)); \ |
| 38 | result = new(storage) classname; \ |
| 39 | } \ |
| 40 | else \ |
| 41 | result = SkNEW(classname); \ |
| 42 | } while (0) |
| 43 | |
| 44 | #define SK_PLACEMENT_NEW_ARGS(result, classname, storage, storagesize, args) \ |
| 45 | do { \ |
| 46 | if (storagesize) \ |
| 47 | { \ |
| 48 | SkASSERT(storageSize >= sizeof(classname)); \ |
| 49 | result = new(storage) classname args; \ |
| 50 | } \ |
| 51 | else \ |
| 52 | result = SkNEW_ARGS(classname, args); \ |
| 53 | } while (0) |
| 54 | #endif |
| 55 | |
| 56 | //////////////////////////////////////////////////////////////////////////////// |
| 57 | |
| 58 | template <class T> class SkAutoTPlacementDelete { |
| 59 | public: |
| 60 | SkAutoTPlacementDelete(T* obj, void* storage) : fObj(obj), fStorage(storage) |
| 61 | { |
| 62 | } |
| 63 | ~SkAutoTPlacementDelete() |
| 64 | { |
| 65 | if (fObj) |
| 66 | { |
| 67 | if (fObj == fStorage) |
| 68 | fObj->~T(); |
| 69 | else |
| 70 | delete fObj; |
| 71 | } |
| 72 | } |
| 73 | T* detach() |
| 74 | { |
| 75 | T* obj = fObj; |
| 76 | fObj = NULL; |
| 77 | return obj; |
| 78 | } |
| 79 | private: |
| 80 | T* fObj; |
| 81 | void* fStorage; |
| 82 | }; |
| 83 | |
| 84 | #endif |