Async++ 是一个用于C++11的轻量级并发框架

Async++ 是一个用于C++11的轻量级并发框架

Async++

Async++ is a lightweight concurrency framework for C++11. The concept was inspired by the Microsoft PPL library and the N3428 C++ standard proposal.

Example

Here is a short example which shows some features of Async++:

#include #include int main(){ auto task1 = async::spawn([] { std::cout << "Task 1 executes asynchronously" << std::endl; }); auto task2 = async::spawn([]() -> int { std::cout << "Task 2 executes in parallel with task 1" << std::endl; return 42; }); auto task3 = task2.then([](int value) -> int { std::cout << "Task 3 executes after task 2, which returned " << value << std::endl; return value * 3; }); auto task4 = async::when_all(task1, task3); auto task5 = task4.then([](std::tuple, async::task> results) { std::cout << "Task 5 executes after tasks 1 and 3. Task 3 returned " << std::get<1>(results).get() << std::endl; }); task5.get(); std::cout << "Task 5 has completed" << std::endl; async::parallel_invoke([] { std::cout << "This is executed in parallel..." << std::endl; }, [] { std::cout << "with this" << std::endl; }); async::parallel_for(async::irange(0, 5), [](int x) { std::cout << x; }); std::cout << std::endl; int r = async::parallel_reduce({1, 2, 3, 4}, 0, [](int x, int y) { return x + y; }); std::cout << "The sum of {1, 2, 3, 4} is " << r << std::endl;}// Output (order may vary in some places):// Task 1 executes asynchronously// Task 2 executes in parallel with task 1// Task 3 executes after task 2, which returned 42// Task 5 executes after tasks 1 and 3. Task 3 returned 126// Task 5 has completed// This is executed in parallel...// with this// 01234// The sum of {1, 2, 3, 4} is 10

Supported Platforms

The only requirement to use Async++ is a C++11 compiler and standard library. Unfortunately C++11 is not yet fully implemented on most platforms. Here is the list of OS and compiler combinations which are known to work.

Linux: Works with GCC 4.7+, Clang 3.2+ and Intel compiler 15+.Mac: Works with Apple Clang (using libc++). GCC also works but you must get a recent version (4.7+).iOS: Works with Apple Clang (using libc++). Note: because iOS has no thread local support, the library uses a workaround based on pthreads.Windows: Works with GCC 4.8+ (with pthread-win32) and Visual Studio 2013+.

Building and Installing

Instructions for compiling Async++ and using it in your code are available on the Building and Installing page.

Documentation

The Async++ documentation is split into four parts:

Tasks: This describes task objects which are the core Async++. Reading this first is strongly recommended.Parallel algorithms: This describes functions to run work on ranges in parallel.Schedulers: This describes the low-level details of Async++ and how to customize it.API Reference: This gives detailed descriptions of all the classes and functions available in Async++.

Contact

You can contact me by email at amanieu@gmail.com.

版权声明：本文内容由网络用户投稿，版权归原作者所有，本站不拥有其著作权，亦不承担相应法律责任。如果您发现本站中有涉嫌抄袭或描述失实的内容，请联系我们jiasou666@gmail.com 处理，核实后本网站将在24小时内删除侵权内容。