static Task?BeginSendRemainderInBackground(PooledMultiplexer @this, RespConnection connection,
List <IBatchedOperation> values, CancellationToken cancellationToken)
{
return(connection.PreferSync ? Task.Run(() =>
{
var len = values.Count;
try
{
for (int i = 1; i < len; i++)
{
Send(@this, connection, values[i], flush: i == len - 1);
}
}
catch (Exception ex)
{
connection.Doom();
Debug.WriteLine(ex.Message);
}
}) : Task.Run(async() =>
{
var len = values.Count;
try
{
for (int i = 1; i < len; i++)
{
await SendAsync(@this, connection, values[i], cancellationToken, flush: i == len - 1).ConfigureAwait(false);
}
}
catch (Exception ex)
{
connection.Doom();
Debug.WriteLine(ex.Message);
}
}));
}
internal async Task CallAsync(RespConnection connection, List <IBatchedOperation> operations, CancellationToken cancellationToken)
{
try
{
int len = operations.Count;
if (len == 0)
{
return;
}
// push the fisrt *before* we context-switch; the rest can wait
await SendAsync(this, connection, operations[0], cancellationToken, true).ConfigureAwait(false);
Task?bgSend = len == 1 ? null : BeginSendRemainderInBackground(this, connection, operations, default);
foreach (var op in operations) // then receive all
{
using var response = await connection.ReceiveAsync().ConfigureAwait(false);
try
{
response.Value.ThrowIfError();
op.ProcessResponse(response.Value);
}
catch (Exception ex)
{
op.TrySetException(ex);
}
}
if (bgSend != null)
{
Wait(bgSend);
}
}
catch (Exception ex)
{
connection.Doom();
foreach (var op in operations) // fault anything that is left after a global explosion
{
op.TrySetException(ex);
}
}
}