id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
4749	Problem with deadline_timer on MacOSX	jc_monnin@…	chris_kohlhoff	"When multiple threads call io_service::run() and there is one active deadline_timer, deadline_timer takes much more time to invoke the handler that specified.[[BR]]

This has been observed on MacOSX 10.6, XCode 3.2.2 using the test application posted below. The time between the 1st and 2nd invoke of ""print1"" is almost 5 minutes instead of 1 second.[[BR]]

It runs fine on Windows and Linux and when defining BOOST_ASIO_DISABLE_KQUEUE, the problem disappears on MacOSX.

{{{
#include <iostream>
#include <boost/asio.hpp>
#include <boost/thread.hpp>
#include <boost/bind.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>

class printer
{
public:
	printer(boost::asio::io_service& io)
	: strand_(io),
	timer1_(io, boost::posix_time::seconds(1)),
	count_(0)
	{
		timer1_.async_wait(strand_.wrap(boost::bind(&printer::print1, this)));
	}
	
	~printer()
	{
		std::cout << ""Final count is "" << count_ << ""\n"";
	}
	
	void print1()
	{
		if (count_ < 10)
		{
			std::cout << ""Timer 1: "" << count_ << ""\n"";
			++count_;
			
			timer1_.expires_at(timer1_.expires_at() + boost::posix_time::seconds(1));
			timer1_.async_wait(strand_.wrap(boost::bind(&printer::print1, this)));
		}
	}
		
private:
	boost::asio::strand strand_;
	boost::asio::deadline_timer timer1_;
	int count_;
};

int main()
{
	boost::asio::io_service io;
	printer p(io);
	boost::thread t(boost::bind(&boost::asio::io_service::run, &io));
	io.run();
	t.join();
	
	return 0;
}
}}}"	Bugs	closed	To Be Determined	asio	Boost 1.44.0	Problem	duplicate		samjmill@…