public void OnWriterCompletedThrowsNotSupportedException()
{
PipeReader reader = PipeReader.Create(Stream.Null);
Assert.Throws <NotSupportedException>(() => reader.OnWriterCompleted((_, __) => { }, null));
reader.Complete();
}
public void OnWriterCompletedNoops()
{
bool fired = false;
PipeReader reader = PipeReader.Create(Stream.Null);
reader.OnWriterCompleted((_, __) => { fired = true; }, null);
reader.Complete();
Assert.False(fired);
}
public void OnWriterCompletedThrowsNotSupportedException()
{
bool fired = false;
PipeReader reader = PipeReader.Create(Stream.Null);
reader.OnWriterCompleted((_, __) => { fired = true; }, null);
reader.Complete();
Assert.False(fired);
}
private async Task CloneAsync(string path, PipeReader from, PipeWriter to)
{
try {
to.OnReaderCompleted((ex, o) => {
// if (ex != null) Console.Error.WriteLine(ex);
((PipeReader)o).Complete(ex);
}, from);
from.OnWriterCompleted((ex, o) =>
{
// if (ex != null) Console.Error.WriteLine(ex);
((PipeWriter)o).Complete(ex);
}, to);
try { File.Delete(path); } catch {}
while (true)
{
var result = await from.ReadAsync();
var buffer = result.Buffer;
if (result.IsCompleted && buffer.IsEmpty)
{
break;
}
using (var file = new FileStream(path, FileMode.Append, FileAccess.Write))
{
foreach (var segment in buffer)
{
// append it to the file
bool leased = false;
if (!MemoryMarshal.TryGetArray(segment, out var arr))
{
var tmp = ArrayPool <byte> .Shared.Rent(segment.Length);
segment.CopyTo(tmp);
arr = new ArraySegment <byte>(tmp, 0, segment.Length);
leased = true;
}
await file.WriteAsync(arr.Array, arr.Offset, arr.Count);
await file.FlushAsync();
if (leased)
{
ArrayPool <byte> .Shared.Return(arr.Array);
}
// and flush it upstream
await to.WriteAsync(segment);
}
}
from.AdvanceTo(buffer.End);
}
}
catch { }
}
public void OnWriterCompletedNoops()
{
bool fired = false;
PipeReader reader = PipeReader.Create(Stream.Null);
#pragma warning disable CS0618 // Type or member is obsolete
reader.OnWriterCompleted((_, __) => { fired = true; }, null);
#pragma warning restore CS0618 // Type or member is obsolete
reader.Complete();
Assert.False(fired);
}
public LibuvOutputConsumer(
PipeReader pipe,
LibuvThread thread,
UvStreamHandle socket,
string connectionId,
ILibuvTrace log)
{
_pipe = pipe;
_thread = thread;
_socket = socket;
_connectionId = connectionId;
_log = log;
_pipe.OnWriterCompleted(OnWriterCompleted, this);
}
internal static Task WaitForWriterCompletionAsync(this PipeReader reader)
{
Requires.NotNull(reader, nameof(reader));
var writerDone = new TaskCompletionSource <object?>();
reader.OnWriterCompleted(
(ex, wdObject) =>
{
var wd = (TaskCompletionSource <object?>)wdObject;
if (ex != null)
{
wd.SetException(ex);
}
else
{
wd.SetResult(null);
}
},
writerDone);
return(writerDone.Task);
}
internal static Task WaitForWriterCompletionAsync(this PipeReader reader)
{
Requires.NotNull(reader, nameof(reader));
var writerDone = new TaskCompletionSource <object?>();
#pragma warning disable CS0618 // Type or member is obsolete
reader.OnWriterCompleted(
(ex, wdObject) =>
{
var wd = (TaskCompletionSource <object?>)wdObject;
if (ex != null)
{
wd.SetException(ex);
}
else
{
wd.SetResult(null);
}
},
writerDone);
#pragma warning restore CS0618 // Type or member is obsolete
return(writerDone.Task);
}
// note - consider deprecated: https://github.com/dotnet/corefx/issues/38362 public override void OnWriterCompleted(Action <Exception, object> callback, object state) => _reader.OnWriterCompleted(callback, state);
public override void OnWriterCompleted(Action <Exception?, object> callback, object state)
{
_pipeReader.OnWriterCompleted(callback, state);
}