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fiber/libs/task/examples/priority.cpp
Oliver Kowalke 39ec793737 initial checkin
2011-02-09 18:41:35 +01:00

65 lines
1.3 KiB
C++

// Copyright Oliver Kowalke 2009.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <iostream>
#include <cstdlib>
#include <stdexcept>
#include <string>
#include <boost/bind.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>
#include "boost/task.hpp"
namespace pt = boost::posix_time;
namespace tsk = boost::tasks;
inline
void print_fn( std::string const& msg)
{ printf("%s", msg.c_str() ); }
inline
void long_running_fn()
{ boost::this_thread::sleep( pt::milliseconds( 250) ); }
int main( int argc, char *argv[])
{
try
{
tsk::static_pool< tsk::unbounded_prio_queue< int > > pool( tsk::poolsize( 1) );
tsk::task< void > t1( long_running_fn);
tsk::task< void > t2( print_fn, "a text.\n");
tsk::task< void > t3( print_fn, " is ");
tsk::task< void > t4( print_fn, "This");
tsk::async(
boost::move( t1),
3,
pool);
tsk::async(
boost::move( t2),
0,
pool);
tsk::async(
boost::move( t3),
1,
pool);
tsk::async(
boost::move( t4),
2,
pool);
return EXIT_SUCCESS;
}
catch ( std::exception const& e)
{ std::cerr << "exception: " << e.what() << std::endl; }
catch ( ... )
{ std::cerr << "unhandled" << std::endl; }
return EXIT_FAILURE;
}