void GDBStubUpdate(struct GDBStub* stub) {
if (stub->socket == INVALID_SOCKET) {
if (stub->d.state == DEBUGGER_PAUSED) {
stub->d.state = DEBUGGER_RUNNING;
}
return;
}
if (stub->connection == INVALID_SOCKET) {
if (stub->shouldBlock) {
Socket reads = stub->socket;
SocketPoll(1, &reads, 0, 0, SOCKET_TIMEOUT);
}
stub->connection = SocketAccept(stub->socket, 0);
if (!SOCKET_FAILED(stub->connection)) {
if (!SocketSetBlocking(stub->connection, false)) {
goto connectionLost;
}
mDebuggerEnter(&stub->d, DEBUGGER_ENTER_ATTACHED, 0);
} else if (SocketWouldBlock()) {
return;
} else {
goto connectionLost;
}
}
while (true) {
if (stub->shouldBlock) {
Socket reads = stub->connection;
SocketPoll(1, &reads, 0, 0, SOCKET_TIMEOUT);
}
ssize_t messageLen = SocketRecv(stub->connection, stub->line, GDB_STUB_MAX_LINE - 1);
if (messageLen == 0) {
goto connectionLost;
}
if (messageLen == -1) {
if (SocketWouldBlock()) {
return;
}
goto connectionLost;
}
stub->line[messageLen] = '\0';
mLOG(DEBUGGER, DEBUG, "< %s", stub->line);
ssize_t position = 0;
while (position < messageLen) {
position += _parseGDBMessage(stub, &stub->line[position]);
}
}
connectionLost:
mLOG(DEBUGGER, WARN, "Connection lost");
GDBStubHangup(stub);
}
int API_recv(SOCKETDESC *desc, void *data, size_t cbMaxData)
{
PyClient *client = (PyClient *) desc->prv;
if (client == NULL)
{
PyErr_Format(PyExc_IOError, "No client object");
PRINTMARK();
return -1;
}
int result;
while (true)
{
result = recv ( client->sockfd, (char *) data, cbMaxData, MSG_NOSIGNAL);
if (result == 0)
{
PRINTMARK();
PyErr_Format(PyExc_IOError, "Connection reset by peer while reading on socket");
return -1;
}
if (result > 0)
{
PRINTMARK();
break;
}
PRINTMARK();
if (!SocketWouldBlock(client->sockfd))
{
PyErr_Format(PyExc_IOError, "Socket error %d when reading", SocketGetLastError());
return -1;
}
PRINTMARK();
if (API_wouldBlock_gevent(client->sock, client->sockfd, 1, 10) == 0)
{
PRINTMARK();
return -1;
}
PRINTMARK();
}
return result;
}
