void CCommandQueue::ProcessNextCommand()
{
if (m_inside_commandqueue)
return;
if (m_exclusiveEngineLock)
return;
if (m_pEngine->IsBusy())
return;
++m_inside_commandqueue;
if (m_CommandList.empty()) {
// Possible sequence of events:
// - Engine emits listing and operation finished
// - Connection gets terminated
// - Interface cannot obtain listing since not connected
// - Yet getting operation successful
// To keep things flowing, we need to advance the recursive operation.
m_state.GetRemoteRecursiveOperation()->NextOperation();
}
while (!m_CommandList.empty()) {
auto const& commandInfo = m_CommandList.front();
int res = m_pEngine->Execute(*commandInfo.command);
ProcessReply(res, commandInfo.command->GetId());
if (res == FZ_REPLY_WOULDBLOCK) {
break;
}
}
--m_inside_commandqueue;
if (m_CommandList.empty()) {
if (m_exclusiveEngineRequest)
GrantExclusiveEngineRequest();
else
m_state.NotifyHandlers(STATECHANGE_REMOTE_IDLE);
if (!m_state.SuccessfulConnect()) {
m_state.SetSite(Site());
}
}
}
void CCommandQueue::RequestExclusiveEngine(bool requestExclusive)
{
wxASSERT(!m_exclusiveEngineLock || !requestExclusive);
if (!m_exclusiveEngineRequest && requestExclusive)
{
m_requestId = ++m_requestIdCounter;
if (m_requestId < 0)
{
m_requestIdCounter = 0;
m_requestId = 0;
}
if (m_CommandList.empty())
{
m_pState->NotifyHandlers(STATECHANGE_REMOTE_IDLE);
GrantExclusiveEngineRequest();
return;
}
}
if (!requestExclusive)
m_exclusiveEngineLock = false;
m_exclusiveEngineRequest = requestExclusive;
m_pState->NotifyHandlers(STATECHANGE_REMOTE_IDLE);
}
void CCommandQueue::ProcessNextCommand()
{
if (m_inside_commandqueue)
return;
if (m_exclusiveEngineLock)
return;
if (m_pEngine->IsBusy())
return;
m_inside_commandqueue = true;
if (m_CommandList.empty()) {
// Possible sequence of events:
// - Engine emits listing and operation finished
// - Connection gets terminated
// - Interface cannot obtain listing since not connected
// - Yet getting operation successful
// To keep things flowing, we need to advance the recursive operation.
m_pState->GetRecursiveOperationHandler()->NextOperation();
}
while (!m_CommandList.empty())
{
CCommand *pCommand = m_CommandList.front();
int res = m_pEngine->Command(*pCommand);
if (pCommand->GetId() != cmd_cancel &&
pCommand->GetId() != cmd_connect &&
pCommand->GetId() != cmd_disconnect)
{
if (res == FZ_REPLY_NOTCONNECTED)
{
// Try automatic reconnect
const CServer* pServer = m_pState->GetServer();
if (pServer)
{
CCommand *pCommand = new CConnectCommand(*pServer);
m_CommandList.push_front(pCommand);
continue;
}
}
}
if (res == FZ_REPLY_WOULDBLOCK)
break;
else if (res == FZ_REPLY_OK)
{
delete pCommand;
m_CommandList.pop_front();
continue;
}
else if (res == FZ_REPLY_ALREADYCONNECTED)
{
res = m_pEngine->Command(CDisconnectCommand());
if (res == FZ_REPLY_WOULDBLOCK)
{
m_CommandList.push_front(new CDisconnectCommand);
break;
}
else if (res != FZ_REPLY_OK)
{
wxBell();
delete pCommand;
m_CommandList.pop_front();
continue;
}
}
else
{
wxBell();
if (pCommand->GetId() == cmd_list)
m_pState->ListingFailed(res);
m_CommandList.pop_front();
delete pCommand;
}
}
m_inside_commandqueue = false;
if (m_CommandList.empty())
{
if (m_exclusiveEngineRequest)
GrantExclusiveEngineRequest();
else
m_pState->NotifyHandlers(STATECHANGE_REMOTE_IDLE);
if (!m_pState->SuccessfulConnect())
m_pState->SetServer(0);
}
}
