boost signal handling

[silentbuddhist]

Hi,

I am newbie to boost c++ world. For portability sake, I am planning to use boost libraries on signal handling. I want my application to trap all the termination signals sent to the application and convert that into proper application closure. The sample code I use for this is,

#include <boost/asio.hpp>
#include <boost/bind.hpp>
#include <boost/asio/signal_set.hpp>
#include <boost/asio/impl/io_service.hpp>
#include <stdio.h>



void handler(
const boost::system::error_code& error,
int signal_number)
{
if (!error)
{
printf( "Signal received\n" );
// A signal occurred.
}
}


int main()
{
boost::asio::io_service srv;
// Construct a signal set registered for process termination.
boost::asio::signal_set signals(srv, SIGINT, SIGTERM);

// Start an asynchronous wait for one of the signals to occur.
signals.async_wait(handler);

for(;;);
}

When I do ctrl+c from the execution terminal, the handler is not getting called at all ( But the singal is captured ). There should be some issue while assigning the signal handler for the signal. Anybody can help me on this?

[kev82]

Don't take this as correct, because it's only based on a vague memory of something I read months ago, but I think that you need to call io_service.run() (or a similar function) to process asynchronous events.