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Subject: [Boost-users] playing with boost::unique_futures
From: Conoscenza Silente (abruzzoforteegentile_at_[hidden])
Date: 2010-03-11 18:07:15
Hi all
I am doing my first steps in using boost::unique_future and below the
example of usage
that arose my question.
Looking at the C++0x I can see that you can create a future using
std::async.
If I understood correctly the good thing of it is that, based on some policy
that I imaging to be related
to number of core availables+other things, std::async will choice for you
whether to run your functions
in a specific thread, or using a ThreadPool or other available resources.
With the code I did below, once I have 2 functions I am forced to use alwyas
2 threads.
Do you know what are the alternatives in Boost/ Boost Thread and if right
now there is/there
will be an equivalent of std::async in Boost?
Thanks
int firstBigOne(){
for( int i = 0; i < 3; i++ ){
std::cout << "firstBigOne" << std::endl;
boost::this_thread::sleep( boost::posix_time::milliseconds(200) );
}
return 10;
}
int secondBigOne(){
for( int i = 0; i < 4; i++ ){
std::cout << "secondBigONe" << std::endl;
boost::this_thread::sleep( boost::posix_time::milliseconds(200) );
}
return 20;
}
void TestC(){
try{
boost::packaged_task<int> pt1(firstBigOne);
boost::packaged_task<int> pt2(secondBigOne);
boost::unique_future<int> f1=pt1.get_future();
boost::unique_future<int> f2=pt2.get_future();
boost::thread t1( boost::move( pt1 ));
boost::thread t2( boost::move( pt2 ));
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