55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
/*
|
|
VIM: let b:lcppflags="-std=c++14 -O2 -pthread -I."
|
|
VIM: let b:wcppflags="/O2 /EHsc /DWIN32"
|
|
VIM-: let b:cppflags=g:Iboost.g:Itbb
|
|
VIM-: let b:ldflags=g:Lboost.g:Ltbb
|
|
VIM-: let b:ldlibpath=g:Bboost.g:Btbb
|
|
VIM-: let b:argv=""
|
|
*/
|
|
#include <iostream>
|
|
#include <exception>
|
|
#include <chrono>
|
|
#include <future>
|
|
|
|
int main ( void )
|
|
{try{
|
|
auto begin = std::chrono::high_resolution_clock::now();
|
|
|
|
std::promise<int> p;
|
|
auto f = p.get_future().share();
|
|
|
|
std::thread t1([f](){
|
|
std::cout << ' ' << f.get() << std::endl;
|
|
});
|
|
|
|
std::thread t2([f](){
|
|
std::cout << ' ' << f.get() << std::endl;
|
|
});
|
|
|
|
|
|
p.set_value(55);
|
|
|
|
t1.join();
|
|
t2.join();
|
|
|
|
//......
|
|
|
|
auto end = std::chrono::high_resolution_clock::now();
|
|
std::chrono::duration<double> seconds = end - begin;
|
|
std::cout << "Time: " << seconds.count() << std::endl;
|
|
return 0;
|
|
}
|
|
catch ( const std::exception& e )
|
|
{
|
|
std::cerr << std::endl
|
|
<< "std::exception(\"" << e.what() << "\")." << std::endl;
|
|
return 2;
|
|
}
|
|
catch ( ... )
|
|
{
|
|
std::cerr << std::endl
|
|
<< "unknown exception." << std::endl;
|
|
return 1;
|
|
}}
|
|
|