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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkRecord_DEFINED | 8 #ifndef SkRecord_DEFINED |
9 #define SkRecord_DEFINED | 9 #define SkRecord_DEFINED |
10 | 10 |
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58 R mutate(unsigned i, F& f) { | 58 R mutate(unsigned i, F& f) { |
59 SkASSERT(i < this->count()); | 59 SkASSERT(i < this->count()); |
60 return fRecords[i].mutate<R>(fTypes[i], f); | 60 return fRecords[i].mutate<R>(fTypes[i], f); |
61 } | 61 } |
62 // TODO: It'd be nice to infer R from F for visit and mutate if we ever get
std::result_of. | 62 // TODO: It'd be nice to infer R from F for visit and mutate if we ever get
std::result_of. |
63 | 63 |
64 // Allocate contiguous space for count Ts, to be freed when the SkRecord is
destroyed. | 64 // Allocate contiguous space for count Ts, to be freed when the SkRecord is
destroyed. |
65 // Here T can be any class, not just those from SkRecords. Throws on failur
e. | 65 // Here T can be any class, not just those from SkRecords. Throws on failur
e. |
66 template <typename T> | 66 template <typename T> |
67 T* alloc(size_t count = 1) { | 67 T* alloc(size_t count = 1) { |
68 return (T*)fAlloc.allocThrow(sizeof(T) * count); | 68 // Bump up to the next pointer width if needed, so all allocations start
pointer-aligned. |
| 69 return (T*)fAlloc.allocThrow(SkAlignPtr(sizeof(T) * count)); |
69 } | 70 } |
70 | 71 |
71 // Add a new command of type T to the end of this SkRecord. | 72 // Add a new command of type T to the end of this SkRecord. |
72 // You are expected to placement new an object of type T onto this pointer. | 73 // You are expected to placement new an object of type T onto this pointer. |
73 template <typename T> | 74 template <typename T> |
74 T* append() { | 75 T* append() { |
75 if (fCount == fReserved) { | 76 if (fCount == fReserved) { |
76 fReserved = SkTMax(kFirstReserveCount, fReserved*2); | 77 fReserved = SkTMax(kFirstReserveCount, fReserved*2); |
77 fRecords.realloc(fReserved); | 78 fRecords.realloc(fReserved); |
78 fTypes.realloc(fReserved); | 79 fTypes.realloc(fReserved); |
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225 SkChunkAlloc fAlloc; | 226 SkChunkAlloc fAlloc; |
226 SkAutoTMalloc<Record> fRecords; | 227 SkAutoTMalloc<Record> fRecords; |
227 SkAutoTMalloc<Type8> fTypes; | 228 SkAutoTMalloc<Type8> fTypes; |
228 // fCount and fReserved measure both fRecords and fTypes, which always grow
in lock step. | 229 // fCount and fReserved measure both fRecords and fTypes, which always grow
in lock step. |
229 unsigned fCount; | 230 unsigned fCount; |
230 unsigned fReserved; | 231 unsigned fReserved; |
231 const unsigned kFirstReserveCount; | 232 const unsigned kFirstReserveCount; |
232 }; | 233 }; |
233 | 234 |
234 #endif//SkRecord_DEFINED | 235 #endif//SkRecord_DEFINED |
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