///////////////////////////////cc.p////////////////////////////////////////
prefix_ senf::NetdeviceController::NetdeviceController(std::string const & interface_name)
+ : sockfd_ (sockfd())
{
- openSocket();
struct ifreq ifr;
::memset( &ifr, 0, sizeof(ifr));
interface_name.copy( ifr.ifr_name, IFNAMSIZ);
}
prefix_ senf::NetdeviceController::NetdeviceController(int interface_index)
+ : sockfd_ (sockfd())
{
- openSocket();
ifindex_ = interface_index;
}
return ifindex_;
}
-prefix_ senf::NetdeviceController::~NetdeviceController()
-{
- close( sockfd_);
-}
-
-prefix_ void senf::NetdeviceController::openSocket()
-{
- sockfd_ = ::socket( PF_INET, SOCK_DGRAM, 0);
- if ( sockfd_ < 0)
- SENF_THROW_SYSTEM_EXCEPTION("Could not open socket for NetdeviceController.");
-}
-
prefix_ void senf::NetdeviceController::ifrName(ifreq& ifr)
const
{
::memset( &ifr, 0, sizeof(ifr));
ifr.ifr_ifindex = ifindex_;
- if ( ::ioctl( sockfd_, SIOCGIFNAME, &ifr ) < 0 )
+ if ( ::ioctl( sockfd_->fd, SIOCGIFNAME, &ifr ) < 0 )
SENF_THROW_SYSTEM_EXCEPTION("NetdeviceController")
<< " could not discover the name of the interface with index " << ifindex_ << ".";
}
prefix_ void senf::NetdeviceController::doIoctl(ifreq& ifr, int request)
const
{
- if ( ::ioctl( sockfd_, request, &ifr ) < 0 )
+ if ( ::ioctl( sockfd_->fd, request, &ifr ) < 0 )
SENF_THROW_SYSTEM_EXCEPTION("NetdeviceController::doIoctl failed.");
}
+///////////////////////////////////////////////////////////////////////////
+// senf::NetdeviceController::SockFd
+
+prefix_ senf::NetdeviceController::SockFd::SockFd()
+ : fd (::socket(PF_INET, SOCK_DGRAM, 0))
+{
+ if ( fd < 0)
+ SENF_THROW_SYSTEM_EXCEPTION("Could not open socket for NetdeviceController.");
+}
+
+prefix_ senf::NetdeviceController::SockFd::~SockFd()
+{
+ ::close(fd);
+}
+
+prefix_ senf::NetdeviceController::SockFd::ptr senf::NetdeviceController::sockfd()
+{
+ static boost::weak_ptr<SockFd> sockfd;
+ SockFd::ptr p (sockfd.lock());
+ if (!p)
+ sockfd = p = SockFd::ptr(new SockFd());
+ return p;
+}
+
///////////////////////////////cc.e////////////////////////////////////////
#undef prefix_
//#include "NetdeviceController.mpp"