public async Task <CommandError> ExecCmd(DevCommandEnum cmd, params object[] args)
{
if (!_cmdhandler.TryGetValue(cmd, out var handler))
{
AppLogger.Error("Device Command Not Found:");
return(CommandError.CommandNotFound);
}
var task = new LastCommand {
Cmd = cmd, FuncId = handler.FuncId
};
if (handler.DontCheckResponse)
{
task = null;
}
var isSending = false;
//spin lock
while (Interlocked.CompareExchange(ref _taskLockTag, CASHelper.LockUsed, CASHelper.LockFree) != CASHelper.LockFree)
{
}
if (_lastCommand != null)
{
isSending = true;
}
else
{
_lastCommand = task;
}
//free lock
Interlocked.CompareExchange(ref _taskLockTag, CASHelper.LockFree, CASHelper.LockUsed);
if (isSending)
{
return(CommandError.SendingCommand);
}
var buf = new RecycleBuffer(handler.CntSize, _bufMgr);
var buffer = buf.Buffer;
handler.FillCnt(buffer, args);
buffer[0] = handler.FuncId;
if (handler.DontCheckResponse)
{
_clientFrameSender.OnNext(DisposableValue.Create(new ArraySegment <byte>(buffer), buf));
return(CommandError.Success);
}
_currentTaskCtl = new TaskCompletionSource <CommandError>();
_clientFrameSender.OnNext(DisposableValue.Create(new ArraySegment <byte>(buffer), buf));
#if !DisableDevTimeout
ScheduleTimeout();
#endif
return(await _currentTaskCtl.Task);
}
public async Task <CommandError> ExecCmd(DevCommandEnum cmd, params object[] args)
{
if (!_cmdhandler.TryGetValue(cmd, out var handler))
{
AppLogger.Error("Device Command Not Found:");
return(CommandError.CommandNotFound);
}
var task = new LastCommand {
Cmd = cmd, FuncId = handler.FuncId
};
if (handler.DontCheckResponse)
{
task = null;
}
var isSending = false;
//spin lock
while (Interlocked.CompareExchange(ref _taskLockTag, CASHelper.LockUsed, CASHelper.LockFree) != CASHelper.LockFree)
{
}
if (_lastCommand != null)
{
isSending = true;
}
else
{
_lastCommand = task;
}
//free lock
Interlocked.CompareExchange(ref _taskLockTag, CASHelper.LockFree, CASHelper.LockUsed);
if (isSending)
{
return(CommandError.SendingCommand);
}
var buf = new RecycleBuffer(handler.CntSize, _bufMgr);
var buffer = buf.Buffer;
var cmdState = handler.FillCnt(buffer, args);
buffer[0] = handler.FuncId;
if (handler.DontCheckResponse)
{
_clientFrameSender.OnNext(buf.AsDisposableValue());
handler.HandlerSuccessAsync(cmdState);
return(CommandError.Success);
}
_currentTaskCtl = new TaskCompletionSource <CommandError>();
var loclCtl = _currentTaskCtl;
_clientFrameSender.OnNext(buf.AsDisposableValue());
#if !DisableDevTimeout
if (_enableTimeout)
{
ScheduleTimeout();
}
#endif
try
{
var waitingTask = loclCtl.Task;
var result = await waitingTask;
if (result == CommandError.Success)
{
handler.HandlerSuccessAsync(cmdState);
}
return(result);
}
catch (Exception ex)
{
AppLogger.Error(ex.Message);
return(CommandError.Failed);
}
}
