public OverlappedContext()
{
if (OverlappedContext.completeCallback == null)
{
OverlappedContext.completeCallback = Fx.ThunkCallback(new IOCompletionCallback(CompleteCallback));
}
if (OverlappedContext.eventCallback == null)
{
OverlappedContext.eventCallback = Fx.ThunkCallback(new WaitOrTimerCallback(EventCallback));
}
if (OverlappedContext.cleanupCallback == null)
{
OverlappedContext.cleanupCallback = Fx.ThunkCallback(new WaitOrTimerCallback(CleanupCallback));
}
this.bufferHolder = new object[] { OverlappedContext.dummyBuffer };
this.overlapped = new Overlapped();
this.nativeOverlapped = this.overlapped.UnsafePack(OverlappedContext.completeCallback, this.bufferHolder);
// When replacing the buffer, we need to provoke the CLR to fix up the handle of the pin.
this.pinnedHandle = GCHandle.FromIntPtr(*((IntPtr*)nativeOverlapped +
(IntPtr.Size == 4 ? HandleOffsetFromOverlapped32 : HandleOffsetFromOverlapped64)));
this.pinnedTarget = this.pinnedHandle.Target;
// Create the permanently rooted holder and put it in the Overlapped.
this.rootedHolder = new RootedHolder();
this.overlapped.AsyncResult = rootedHolder;
}
public unsafe OverlappedContext()
{
if (completeCallback == null)
{
completeCallback = Fx.ThunkCallback(new IOCompletionCallback(OverlappedContext.CompleteCallback));
}
if (eventCallback == null)
{
eventCallback = Fx.ThunkCallback(new WaitOrTimerCallback(OverlappedContext.EventCallback));
}
if (cleanupCallback == null)
{
cleanupCallback = Fx.ThunkCallback(new WaitOrTimerCallback(OverlappedContext.CleanupCallback));
}
this.bufferHolder = new object[] { dummyBuffer };
this.overlapped = new Overlapped();
this.nativeOverlapped = this.overlapped.UnsafePack(completeCallback, this.bufferHolder);
this.pinnedHandle = GCHandle.FromIntPtr(*((IntPtr*) (this.nativeOverlapped + (((IntPtr.Size == 4) ? -4 : -3) * sizeof(IntPtr)))));
this.pinnedTarget = this.pinnedHandle.Target;
this.rootedHolder = new RootedHolder();
this.overlapped.AsyncResult = this.rootedHolder;
}
