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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 SkOnce_DEFINED | 8 #ifndef SkOnce_DEFINED |
9 #define SkOnce_DEFINED | 9 #define SkOnce_DEFINED |
10 | 10 |
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22 // SkOnce(&once, set_up_my_singleton, &singleton); | 22 // SkOnce(&once, set_up_my_singleton, &singleton); |
23 // SkASSERT(NULL != singleton); | 23 // SkASSERT(NULL != singleton); |
24 // return *singleton; | 24 // return *singleton; |
25 // } | 25 // } |
26 // | 26 // |
27 // OnceTest.cpp also should serve as a few other simple examples. | 27 // OnceTest.cpp also should serve as a few other simple examples. |
28 // | 28 // |
29 // You may optionally pass SkOnce a second function to be called at exit for cle
anup. | 29 // You may optionally pass SkOnce a second function to be called at exit for cle
anup. |
30 | 30 |
31 #include "SkDynamicAnnotations.h" | 31 #include "SkDynamicAnnotations.h" |
32 #include "SkThread.h" | |
33 #include "SkTypes.h" | 32 #include "SkTypes.h" |
34 | 33 |
| 34 #include "../../src/core/SkThread.h" |
| 35 |
35 #define SK_ONCE_INIT { false, { 0, SkDEBUGCODE(0) } } | 36 #define SK_ONCE_INIT { false, { 0, SkDEBUGCODE(0) } } |
36 #define SK_DECLARE_STATIC_ONCE(name) static SkOnceFlag name = SK_ONCE_INIT | 37 #define SK_DECLARE_STATIC_ONCE(name) static SkOnceFlag name = SK_ONCE_INIT |
37 | 38 |
38 struct SkOnceFlag; // If manually created, initialize with SkOnceFlag once = SK
_ONCE_INIT | 39 struct SkOnceFlag; // If manually created, initialize with SkOnceFlag once = SK
_ONCE_INIT |
39 | 40 |
40 template <typename Func, typename Arg> | 41 template <typename Func, typename Arg> |
41 inline void SkOnce(SkOnceFlag* once, Func f, Arg arg, void(*atExit)() = NULL); | 42 inline void SkOnce(SkOnceFlag* once, Func f, Arg arg, void(*atExit)() = NULL); |
42 | 43 |
43 // If you've already got a lock and a flag to use, this variant lets you avoid a
n extra SkOnceFlag. | 44 // If you've already got a lock and a flag to use, this variant lets you avoid a
n extra SkOnceFlag. |
44 template <typename Lock, typename Func, typename Arg> | 45 template <typename Lock, typename Func, typename Arg> |
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168 } | 169 } |
169 | 170 |
170 template <typename Func, typename Arg> | 171 template <typename Func, typename Arg> |
171 inline void SkOnce(SkOnceFlag* once, Func f, Arg arg, void(*atExit)()) { | 172 inline void SkOnce(SkOnceFlag* once, Func f, Arg arg, void(*atExit)()) { |
172 return SkOnce(&once->done, &once->lock, f, arg, atExit); | 173 return SkOnce(&once->done, &once->lock, f, arg, atExit); |
173 } | 174 } |
174 | 175 |
175 #undef SK_ANNOTATE_BENIGN_RACE | 176 #undef SK_ANNOTATE_BENIGN_RACE |
176 | 177 |
177 #endif // SkOnce_DEFINED | 178 #endif // SkOnce_DEFINED |
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