unsigned long iftonl(const char* interface)
{
int pos;
int len;
unsigned long a;
unsigned long b;
unsigned long c;
unsigned long d;
unsigned long addr;
unsigned nread;
nread = 0;
pos = 0;
len = strlen(interface);
a = BufferToUInt64(interface + pos, len - pos, &nread);
if (nread == 0 || a > 255)
return INADDR_NONE;
pos += nread;
if (interface[pos++] != '.')
return INADDR_NONE;
b = BufferToUInt64(interface + pos, len - pos, &nread);
if (nread == 0 || b > 255)
return INADDR_NONE;
pos += nread;
if (interface[pos++] != '.')
return INADDR_NONE;
c = BufferToUInt64(interface + pos, len - pos, &nread);
if (nread == 0 || c > 255)
return INADDR_NONE;
pos += nread;
if (interface[pos++] != '.')
return INADDR_NONE;
d = BufferToUInt64(interface + pos, len - pos, &nread);
if (nread == 0 || d > 255)
return INADDR_NONE;
pos += nread;
if (interface[pos] != '\0' &&
interface[pos] != ':')
return INADDR_NONE;
addr = (d & 0xff) << 24 | (c & 0xff) << 16 | (b & 0xff) << 8 | (a & 0xff);
return addr;
}
uint64_t QuorumDatabase::GetUint64(const char* name)
{
ReadBuffer key(name);
ReadBuffer value;
uint64_t u64;
unsigned nread;
int ret;
ret = paxosShard->Get(key, value);
if (!ret)
return false;
nread = 0;
u64 = BufferToUInt64(value.GetBuffer(), value.GetLength(), &nread);
if (nread != value.GetLength())
{
Log_Trace();
u64 = 0;
}
return u64;
}
void MessageConnection::OnRead()
{
bool yield, closed;
unsigned pos, msglength, nread, msgbegin, msgend, required;
uint64_t start;
Stopwatch sw;
ReadBuffer msg;
if (!readActive)
{
if (resumeRead.IsActive())
STOP_FAIL(1, "Program bug: resumeRead.IsActive() should be false.");
EventLoop::Add(&resumeRead);
return;
}
sw.Start();
Log_Trace("Read buffer: %B", tcpread.buffer);
tcpread.requested = IO_READ_ANY;
pos = 0;
start = NowClock();
yield = false;
while(true)
{
msglength = BufferToUInt64(tcpread.buffer->GetBuffer() + pos,
tcpread.buffer->GetLength() - pos, &nread);
if (msglength > tcpread.buffer->GetSize() - NumDigits(msglength) - 1)
{
Log_Trace();
required = msglength + NumDigits(msglength) + 1;
if (required > MESSAGING_MAX_SIZE)
{
Log_Trace();
OnClose();
return;
}
tcpread.buffer->Allocate(required);
break;
}
if (nread == 0 || (unsigned) tcpread.buffer->GetLength() - pos <= nread)
break;
if (tcpread.buffer->GetCharAt(pos + nread) != ':')
{
Log_Trace("Message protocol error");
OnClose();
return;
}
msgbegin = pos + nread + 1;
msgend = pos + nread + 1 + msglength;
if ((unsigned) tcpread.buffer->GetLength() < msgend)
{
// read more
//tcpread.requested = msgend - pos;
break;
}
msg.SetBuffer(tcpread.buffer->GetBuffer() + msgbegin);
msg.SetLength(msglength);
closed = OnMessage(msg);
if (closed)
return;
pos = msgend;
// if the user called Close() in OnMessageRead()
if (state != CONNECTED)
return;
if (tcpread.buffer->GetLength() == msgend)
break;
if (NowClock() - start >= YIELD_TIME || !readActive)
{
// let other code run every YIELD_TIME msec
yield = true;
if (resumeRead.IsActive())
STOP_FAIL(1, "Program bug: resumeRead.IsActive() should be false.");
EventLoop::Add(&resumeRead);
break;
}
}
if (pos > 0)
{
memmove(tcpread.buffer->GetBuffer(), tcpread.buffer->GetBuffer() + pos,
tcpread.buffer->GetLength() - pos);
tcpread.buffer->Shorten(pos);
}
if (state == CONNECTED
&& !tcpread.active && !yield)
IOProcessor::Add(&tcpread);
sw.Stop();
Log_Trace("time spent in OnRead(): %U", sw.Elapsed());
}
