public unsafe ThreadPoolBoundHandleOverlapped(IOCompletionCallback callback, object state, object pinData, PreAllocatedOverlapped preAllocated)
{
_userCallback = callback;
_userState = state;
_preAllocated = preAllocated;
_nativeOverlapped = Pack(CompletionCallback, pinData);
_nativeOverlapped->OffsetLow = 0; // CLR reuses NativeOverlapped instances and does not reset these
_nativeOverlapped->OffsetHigh = 0;
}
internal OverlappedValueTaskSource(SafeFileHandle fileHandle)
{
_fileHandle = fileHandle;
_source.RunContinuationsAsynchronously = true;
_preallocatedOverlapped = PreAllocatedOverlapped.UnsafeCreate(s_ioCallback, this, null);
}
public unsafe void MultipleOperationsOverMultipleHandles()
{
const int DATA_SIZE = 2;
SafeHandle handle1 = HandleFactory.CreateAsyncFileHandleForWrite(@"MultipleOperationsOverMultipleHandle1.tmp");
SafeHandle handle2 = HandleFactory.CreateAsyncFileHandleForWrite(@"MultipleOperationsOverMultipleHandle2.tmp");
ThreadPoolBoundHandle boundHandle1 = ThreadPoolBoundHandle.BindHandle(handle1);
ThreadPoolBoundHandle boundHandle2 = ThreadPoolBoundHandle.BindHandle(handle2);
OverlappedContext result1 = new OverlappedContext();
OverlappedContext result2 = new OverlappedContext();
byte[] data1 = new byte[DATA_SIZE];
data1[0] = (byte)'A';
data1[1] = (byte)'B';
byte[] data2 = new byte[DATA_SIZE];
data2[0] = (byte)'C';
data2[1] = (byte)'D';
PreAllocatedOverlapped preAlloc1 = new PreAllocatedOverlapped(OnOverlappedOperationCompleted, result1, data1);
PreAllocatedOverlapped preAlloc2 = new PreAllocatedOverlapped(OnOverlappedOperationCompleted, result2, data2);
for (int i = 0; i < 10; i++)
{
NativeOverlapped *overlapped1 = boundHandle1.AllocateNativeOverlapped(preAlloc1);
NativeOverlapped *overlapped2 = boundHandle2.AllocateNativeOverlapped(preAlloc2);
fixed(byte *p1 = data1, p2 = data2)
{
int retval = DllImport.WriteFile(boundHandle1.Handle, p1, DATA_SIZE, IntPtr.Zero, overlapped1);
if (retval == 0)
{
Assert.Equal(DllImport.ERROR_IO_PENDING, Marshal.GetLastWin32Error());
}
retval = DllImport.WriteFile(boundHandle2.Handle, p2, DATA_SIZE, IntPtr.Zero, overlapped2);
if (retval == 0)
{
Assert.Equal(DllImport.ERROR_IO_PENDING, Marshal.GetLastWin32Error());
}
// Wait for overlapped operations to complete
WaitHandle.WaitAll(new WaitHandle[] { result1.Event, result2.Event });
}
boundHandle1.FreeNativeOverlapped(overlapped1);
boundHandle2.FreeNativeOverlapped(overlapped2);
result1.Event.Reset();
result2.Event.Reset();
Assert.Equal(0, result1.ErrorCode);
Assert.Equal(0, result2.ErrorCode);
Assert.Equal(DATA_SIZE, result1.BytesWritten);
Assert.Equal(DATA_SIZE, result2.BytesWritten);
}
boundHandle1.Dispose();
boundHandle2.Dispose();
preAlloc1.Dispose();
preAlloc2.Dispose();
handle1.Dispose();
handle2.Dispose();
}
public unsafe ThreadPoolBoundHandleOverlapped(IOCompletionCallback callback, object state, object pinData, PreAllocatedOverlapped preAllocated)
{
_userCallback = callback;
_userState = state;
_preAllocated = preAllocated;
_nativeOverlapped = Pack(s_completionCallback, pinData);
_nativeOverlapped->OffsetLow = 0; // CLR reuses NativeOverlapped instances and does not reset these
_nativeOverlapped->OffsetHigh = 0;
}
public unsafe NativeOverlapped* AllocateNativeOverlapped(PreAllocatedOverlapped preAllocated);
internal ValueTaskSource(AsyncWindowsFileStreamStrategy strategy)
{
_strategy = strategy;
_source.RunContinuationsAsynchronously = true;
_preallocatedOverlapped = PreAllocatedOverlapped.UnsafeCreate(s_ioCallback, this, null);
}
public unsafe void PreAllocatedOverlapped_EmptyArrayAsPinData_DoesNotThrow()
{
using (new PreAllocatedOverlapped((_, __, ___) => { }, new object(), new byte[0])) { }
using (PreAllocatedOverlapped.UnsafeCreate((_, __, ___) => { }, new object(), new byte[0])) { }
}
public unsafe void PreAllocatedOverlapped_NullAsPinData_DoesNotThrow()
{
using (new PreAllocatedOverlapped((_, __, ___) => { }, new object(), (byte[])null)) { }
using (PreAllocatedOverlapped.UnsafeCreate((_, __, ___) => { }, new object(), (byte[])null)) { }
}
public unsafe void PreAllocatedOverlapped_NullAsContext_DoesNotThrow()
{
using (new PreAllocatedOverlapped((_, __, ___) => { }, (object)null, new byte[256])) { }
using (PreAllocatedOverlapped.UnsafeCreate((_, __, ___) => { }, (object)null, new byte[256])) { }
}
public unsafe void PreAllocatedOverlapped_ReturnedNativeOverlapped_OffsetLowAndOffsetHighSetToZero()
{
using (new PreAllocatedOverlapped((_, __, ___) => { }, new object(), new byte[256])) { }
using (PreAllocatedOverlapped.UnsafeCreate((_, __, ___) => { }, new object(), new byte[256])) { }
}
protected PipeValueTaskSource(PipeStream pipeStream)
{
_pipeStream = pipeStream;
_source.RunContinuationsAsynchronously = true;
_preallocatedOverlapped = new PreAllocatedOverlapped(s_ioCallback, this, null);
}