std::future 介绍
1 #include <iostream>
2 #include <thread>
3 #include <future>
4
5 using namespace std;
6
7 void DoWork(promise<int> thePromise)
8 {
9 // ... Do some work ...
10 // And ultimately store the result in the promise.
11 thePromise.set_value(42);
12 }
13
14 int main()
15 {
16 // Create a promise to pass to the thread.
17 promise<int> myPromise;
18 // Get the future of the promise.
19 std::future<int> theFuture = myPromise.get_future();
20 // Create a thread and move the promise into it.
21 thread theThread{ DoWork, std::move(myPromise) };
22
23 // Do some more work...
24
25 // Get the result.
26 int result = theFuture.get();
27 cout << "Result: " << result << endl;
28
29 // Make sure to join the thread.
30 theThread.join();
31
32 return 0;
33 }
参考资料
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