/***
* @brief Read input from the user
* @param prompt the prompt to display
* @param line what the user typed
*/
void cli::getline( const std::string& prompt, std::string& line)
{
// getting file descriptor for C++ streams is near impossible
// so we just assume it's the same as the C stream...
#ifdef HAVE_EDITLINE
#ifndef WIN32
if( isatty( fileno( stdin ) ) )
#else
// it's implied by
// https://msdn.microsoft.com/en-us/library/f4s0ddew.aspx
// that this is the proper way to do this on Windows, but I have
// no access to a Windows compiler and thus,
// no idea if this actually works
if( _isatty( _fileno( stdin ) ) )
#endif
{
rl_set_complete_func(my_rl_complete);
rl_set_list_possib_func(cli_completion);
rl_set_check_secret_func(cli_check_secret);
static fc::thread getline_thread("getline");
getline_thread.async( [&](){
char* line_read = nullptr;
std::cout.flush(); //readline doesn't use cin, so we must manually flush _out
line_read = readline(prompt.c_str());
if( line_read == nullptr )
FC_THROW_EXCEPTION( fc::eof_exception, "" );
line = line_read;
// we don't need here to add line in editline's history, cause it will be doubled
free(line_read);
}).wait();
}
else
#endif
{
std::cout << prompt;
// sync_call( cin_thread, [&](){ std::getline( *input_stream, line ); }, "getline");
fc::getline( fc::cin, line );
return;
}
}
void mining_loop()
{
while( !_mining_loop_complete.canceled() )
{
try {
if( _current_block.prev == block_id_type() || !_callback || _effort < 0.01 || _prev_header.next_difficulty == 0 )
{
ilog( "${current.prev} _effort ${effort} prev_header: ${prev_header}",
("current.prev",_current_block.prev)("effort",_effort)("prev_header",_prev_header) );
fc::usleep( fc::microseconds( 1000*1000 ) );
continue;
}
auto start = fc::time_point::now();
block_header tmp = _current_block;
tmp.timestamp = fc::time_point::now();
auto next_diff = _prev_header.next_difficulty * 300*1000000ll / (tmp.timestamp - _prev_header.timestamp).count();
tmp.next_difficulty = (_prev_header.next_difficulty * 24 + next_diff ) / 25;
tmp.noncea = 0;
tmp.nonceb = 0;
auto tmp_id = tmp.id();
auto seed = fc::sha256::hash( (char*)&tmp_id, sizeof(tmp_id) );
auto pairs = momentum_search( seed );
for( auto collision : pairs )
{
tmp.noncea = collision.first;
tmp.nonceb = collision.second;
FC_ASSERT( _min_votes > 0 );
FC_ASSERT( _prev_header.next_difficulty > 0 );
ilog( "difficlty ${d} target ${t} tmp.get_difficulty ${dd} mv ${mv} min: ${min} block:\n${block}", ("min",_min_votes)("mv",_miner_votes)("dd",tmp.get_difficulty())
("d",(tmp.get_difficulty() * _miner_votes)/_min_votes)("t",_prev_header.next_difficulty)("block",_current_block) );
if( (tmp.get_difficulty() * _miner_votes)/_min_votes >= _prev_header.next_difficulty )
{
if( _callback )
{
auto cb = _callback;
_main_thread->async( [cb,tmp](){cb( tmp );} );
}
_effort = 0;
break;
}
}
// search space...
auto end = fc::time_point::now();
// wait while checking for cancel...
if( _effort < 1.0 )
{
auto calc_time = (end-start).count();
auto wait_time = ((1-_effort)/_effort) * calc_time;
auto wait_until = end + fc::microseconds(wait_time);
if( wait_until > fc::time_point::now() && !_mining_loop_complete.canceled() )
{
ilog( "." );
fc::usleep( fc::microseconds( 1000*100 ) );
}
}
else
{
ilog( "." );
fc::usleep( fc::microseconds(1000*10) );
}
}
catch ( const fc::exception& e )
{
wlog( "${e}", ("e",e.to_detail_string() ));
}
} // while
} /// mining_loop
