internal void SetOperationFlags(ReadFlags readFlags, ref ReadOptions readOptions, bool noKey = false) => this.SetOperationFlags(GetOperationFlags(readFlags, noKey), readOptions.StopAddress);
public ValueTask <FasterKV <Key, Value> .ReadAsyncResult <Input, Output, Context> > ReadAtAddressAsync(ref Input input, ref ReadOptions readOptions,
Context userContext = default, long serialNo = 0, CancellationToken cancellationToken = default)
{
Debug.Assert(!clientSession.fht.epoch.ThisInstanceProtected());
Key key = default;
return(clientSession.fht.ReadAsync(FasterSession, clientSession.ctx, ref key, ref input, ref readOptions, userContext, serialNo, cancellationToken, noKey: true));
}
public Status Read(ref Key key, ref Input input, ref Output output, ref ReadOptions readOptions, out RecordMetadata recordMetadata, Context userContext = default, long serialNo = 0)
{
Debug.Assert(clientSession.fht.epoch.ThisInstanceProtected());
return(clientSession.fht.ContextRead(ref key, ref input, ref output, ref readOptions, out recordMetadata, userContext, FasterSession, serialNo, clientSession.ctx));
}
public Status ReadAtAddress(ref Input input, ref Output output, ref ReadOptions readOptions, Context userContext = default, long serialNo = 0)
{
Debug.Assert(clientSession.fht.epoch.ThisInstanceProtected());
return(clientSession.fht.ContextReadAtAddress(ref input, ref output, ref readOptions, userContext, FasterSession, serialNo, clientSession.ctx));
}
internal ValueTask <ReadAsyncResult <Input, Output, Context> > ReadAsync <Input, Output, Context>(IFasterSession <Key, Value, Input, Output, Context> fasterSession,
FasterExecutionContext <Input, Output, Context> currentCtx,
ref Key key, ref Input input, ref ReadOptions readOptions, Context context, long serialNo, CancellationToken token, bool noKey = false)
{
var pcontext = default(PendingContext <Input, Output, Context>);
var operationFlags = PendingContext <Input, Output, Context> .GetOperationFlags(MergeReadFlags(currentCtx.ReadFlags, readOptions.ReadFlags), noKey);
pcontext.SetOperationFlags(operationFlags, readOptions.StopAddress);
var diskRequest = default(AsyncIOContext <Key, Value>);
Output output = default;
fasterSession.UnsafeResumeThread();
try
{
OperationStatus internalStatus;
do
{
internalStatus = InternalRead(ref key, ref input, ref output, readOptions.StartAddress, ref context, ref pcontext, fasterSession, currentCtx, serialNo);
}while (internalStatus == OperationStatus.RETRY_NOW);
Debug.Assert(internalStatus != OperationStatus.RETRY_LATER);
if (OperationStatusUtils.TryConvertToStatusCode(internalStatus, out Status status))
{
return(new ValueTask <ReadAsyncResult <Input, Output, Context> >(new ReadAsyncResult <Input, Output, Context>(new(internalStatus), output, new RecordMetadata(pcontext.recordInfo, pcontext.logicalAddress))));
}
status = HandleOperationStatus(currentCtx, currentCtx, ref pcontext, fasterSession, internalStatus, true, out diskRequest);
if (!status.IsPending)
{
return(new ValueTask <ReadAsyncResult <Input, Output, Context> >(new ReadAsyncResult <Input, Output, Context>(status, output, new RecordMetadata(pcontext.recordInfo, pcontext.logicalAddress))));
}
}
finally
{
Debug.Assert(serialNo >= currentCtx.serialNum, "Operation serial numbers must be non-decreasing");
currentCtx.serialNum = serialNo;
fasterSession.UnsafeSuspendThread();
}
return(SlowReadAsync(this, fasterSession, currentCtx, pcontext, diskRequest, token));
}