void Daemon::grouped( Channel channel ) {
NOTE();
OutputMessage response( MessageType::Control );
if ( _state != State::FormingGroup ) {
response.tag( Code::Refuse );
channel->send( response );
return;
}
Channel top, bottom;
std::tie( top, bottom ) = Communicator::socketPair();
response.tag( Code::OK );
channel->send( response );
int pid = ::fork();
if ( pid == -1 )
throw brick::net::SystemException( "fork" );
if ( pid == 0 )
becomeChild( std::move( bottom ) );
else {
_childPid = pid;
becomeParent( std::move( top ) );
}
}
void OptimisticTickSyncAlgo::createSpeculativeProcess()
{
pid_t forkpid = fork();
if (-1 == forkpid) {
/* I am the parent, and an error was detected */
perror("createSpeculativeProcess: fork");
exit(0);
}
else if (0 == forkpid) {
/* I am a child */
becomeChild();
}
else {
/* I am a parent */
gotChild(forkpid);
}
}
