/// <summary>
///
/// </summary>
/// <param name="sourceAddress"></param>
/// <param name="segmentId"></param>
/// <param name="destinationAddress"></param>
/// <param name="numBytesToWrite"></param>
/// <param name="callback"></param>
/// <param name="context"></param>
public override void WriteAsync(IntPtr sourceAddress,
int segmentId,
ulong destinationAddress,
uint numBytesToWrite,
DeviceIOCompletionCallback callback,
object context)
{
Debug.Assert(destinationAddress + numBytesToWrite <= (ulong)sz_segment, "Out of space in segment - LocalMemoryDevice does not support variable-sized segments needed for the object log");
// We ensure capability of writing to next segment, because there is no
// extra buffer space allocated in this device
HandleCapacity(segmentId + 1);
var q = ioQueue[segmentId % parallelism];
var req = new IORequestLocalMemory
{
srcAddress = (void *)sourceAddress,
dstAddress = ram_segments[segmentId] + destinationAddress,
bytes = numBytesToWrite,
callback = callback,
context = context
};
if (latencyTicks > 0)
{
req.startTime = DateTime.UtcNow.Ticks;
}
q.Enqueue(req);
}
/// <summary>
///
/// </summary>
/// <param name="segmentId"></param>
/// <param name="sourceAddress"></param>
/// <param name="destinationAddress"></param>
/// <param name="readLength"></param>
/// <param name="callback"></param>
/// <param name="context"></param>
public override void ReadAsync(int segmentId, ulong sourceAddress,
IntPtr destinationAddress,
uint readLength,
DeviceIOCompletionCallback callback,
object context)
{
var q = ioQueue[segmentId % parallelism];
var req = new IORequestLocalMemory
{
srcAddress = ram_segments[segmentId] + sourceAddress,
dstAddress = (void *)destinationAddress,
bytes = readLength,
callback = callback,
context = context
};
q.Enqueue(req);
}
/// <summary>
///
/// </summary>
/// <param name="sourceAddress"></param>
/// <param name="segmentId"></param>
/// <param name="destinationAddress"></param>
/// <param name="numBytesToWrite"></param>
/// <param name="callback"></param>
/// <param name="context"></param>
public override void WriteAsync(IntPtr sourceAddress,
int segmentId,
ulong destinationAddress,
uint numBytesToWrite,
DeviceIOCompletionCallback callback,
object context)
{
// We ensure capability of writing to next segment, because there is no
// extra buffer space allocated in this device
HandleCapacity(segmentId + 1);
var q = ioQueue[segmentId % parallelism];
var req = new IORequestLocalMemory
{
srcAddress = (void *)sourceAddress,
dstAddress = ram_segments[segmentId] + destinationAddress,
bytes = numBytesToWrite,
callback = callback,
context = context
};
q.Enqueue(req);
}