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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 SkTaskGroup_DEFINED | 8 #ifndef SkTaskGroup_DEFINED |
9 #define SkTaskGroup_DEFINED | 9 #define SkTaskGroup_DEFINED |
10 | 10 |
11 #include "SkTypes.h" | 11 #include "SkTypes.h" |
12 | 12 |
13 struct SkRunnable; | 13 struct SkRunnable; |
14 | 14 |
15 class SkTaskGroup : SkNoncopyable { | 15 class SkTaskGroup : SkNoncopyable { |
16 public: | 16 public: |
17 // Create one of these in main() to enable SkTaskGroups globally. | 17 // Create one of these in main() to enable SkTaskGroups globally. |
18 struct Enabler : SkNoncopyable { | 18 struct Enabler : SkNoncopyable { |
19 explicit Enabler(int threads = -1); // Default is system-reported core
count. | 19 explicit Enabler(int threads = -1); // Default is system-reported core
count. |
20 ~Enabler(); | 20 ~Enabler(); |
21 }; | 21 }; |
22 | 22 |
23 SkTaskGroup(); | 23 SkTaskGroup(); |
24 ~SkTaskGroup() { this->wait(); } | 24 ~SkTaskGroup() { this->wait(); } |
25 | 25 |
26 // Add a task to this SkTaskGroup. It will likely run on another thread. | 26 // Add a task to this SkTaskGroup. It will likely run on another thread. |
27 // Neither add() method takes owership of any of its parameters. | 27 // Neither add() method takes owership of any of its parameters. |
28 void add(SkRunnable*); | 28 void add(SkRunnable*); |
29 void add(void (*fn)(void*), void* arg); | 29 |
| 30 template <typename T> |
| 31 void add(void (*fn)(T*), T* arg) { this->add((void_fn)fn, (void*)arg); } |
| 32 |
| 33 // Add a batch of N tasks, all calling fn with different arguments. |
| 34 // Equivalent to a loop over add(fn, arg), but with perhaps less synchroniza
tion overhead. |
| 35 template <typename T> |
| 36 void batch(void (*fn)(T*), T* args, int N) { this->batch((void_fn)fn, args,
N, sizeof(T)); } |
30 | 37 |
31 // Block until all Tasks previously add()ed to this SkTaskGroup have run. | 38 // Block until all Tasks previously add()ed to this SkTaskGroup have run. |
32 // You may safely reuse this SkTaskGroup after wait() returns. | 39 // You may safely reuse this SkTaskGroup after wait() returns. |
33 void wait(); | 40 void wait(); |
34 | 41 |
35 private: | 42 private: |
| 43 typedef void(*void_fn)(void*); |
| 44 |
| 45 void add (void_fn, void* arg); |
| 46 void batch(void_fn, void* args, int N, size_t stride); |
| 47 |
36 /*atomic*/ int32_t fPending; | 48 /*atomic*/ int32_t fPending; |
37 }; | 49 }; |
38 | 50 |
39 #endif//SkTaskGroup_DEFINED | 51 #endif//SkTaskGroup_DEFINED |
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