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[英]Cannot compile boost::asio::spawn program using a boost::asio::yield_context
[英]How to build a program using boost::asio::spawn
如何構建使用boost lib的程序?
我無法建立使用boost::asio:spawn
的示例。
G ++版本:7.3
Boost Lib版本:1.69
碼:
#include <iostream>
#include <boost/asio.hpp>
#include <boost/asio/spawn.hpp>
int main ()
{
boost::asio::io_service io_service;
// Spawn coroutine.
boost::asio::spawn(io_service,
[&io_service](boost::asio::yield_context yield_context) {
// Add more 'work' to the io_service.
io_service.post([] {
std::cout << "Other work" << std::endl;
});
// Wait on a timer within the coroutine.
boost::asio::deadline_timer timer(io_service);
timer.expires_from_now(boost::posix_time::seconds(1));
std::cout << "Start wait" << std::endl;
timer.async_wait(yield_context);
std::cout << "Woke up" << std::endl;
});
io_service.run();
}
錯誤:
boost::asio::experimental::co_spawn has not been declared
我試圖重現您的問題,但不能(使用與您報告相同的版本)。
另請參閱Live Live Wandbox(GCC7.3 / boost1.69) 。
這是我用來構建的內容:
g++ -std=c++11 -pthread -I ~/custom/boost_1_69_0/ -L ~/custom/boost_1_69_0/stage/lib/ test.cpp -lboost_{thread,context,coroutine,system} -DBOOST_COROUTINES_NO_DEPRECATION_WARNING
這是bash oneliner的原因:
g++ -std=c++11 -pthread \\ -I /home/sehe/custom/boost_1_69_0/ \\ -L /home/sehe/custom/boost_1_69_0/stage/lib/ \\ test.cpp \\ -lboost_thread \\ -lboost_context \\ -lboost_coroutine \\ -lboost_system \\ -DBOOST_COROUTINES_NO_DEPRECATION_WARNING
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