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 85
