blob: 0d86cdb82934fefa17274c4a99e714f7751aa8b0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkTaskGroup_DEFINED
#define SkTaskGroup_DEFINED
#include <functional>
#include "SkTypes.h"
#include "SkAtomics.h"
#include "SkTemplates.h"
class SkTaskGroup : SkNoncopyable {
public:
// Create one of these in main() to enable SkTaskGroups globally.
struct Enabler : SkNoncopyable {
explicit Enabler(int threads = -1); // Default is system-reported core count.
~Enabler();
};
SkTaskGroup();
~SkTaskGroup() { this->wait(); }
// Add a task to this SkTaskGroup. It will likely run on another thread.
void add(std::function<void(void)> fn);
// Add a batch of N tasks, all calling fn with different arguments.
void batch(int N, std::function<void(int)> fn);
// Block until all Tasks previously add()ed to this SkTaskGroup have run.
// You may safely reuse this SkTaskGroup after wait() returns.
void wait();
private:
SkAtomic<int32_t> fPending;
};
// Returns best estimate of number of CPU cores available to use.
int sk_num_cores();
#endif//SkTaskGroup_DEFINED
|
