/// <summary>
/// Ensure that the modified range list exists.
/// </summary>
private void EnsureRangeList()
{
if (_modifiedRanges == null)
{
_modifiedRanges = new BufferModifiedRangeList(_context);
}
}
/// <summary>
/// Inherit ranges from another modified range list.
/// </summary>
/// <param name="ranges">The range list to inherit from</param>
/// <param name="rangeAction">The action to call for each modified range</param>
public void InheritRanges(BufferModifiedRangeList ranges, Action <ulong, ulong> rangeAction)
{
BufferModifiedRange[] inheritRanges;
lock (ranges._lock)
{
inheritRanges = ranges.ToArray();
}
lock (_lock)
{
foreach (BufferModifiedRange range in inheritRanges)
{
Add(range);
}
}
ulong currentSync = _context.SyncNumber;
foreach (BufferModifiedRange range in inheritRanges)
{
if (range.SyncNumber != currentSync)
{
rangeAction(range.Address, range.Size);
}
}
}
/// <summary>
/// Inherit modified ranges from another buffer.
/// </summary>
/// <param name="from">The buffer to inherit from</param>
public void InheritModifiedRanges(Buffer from)
{
if (from._modifiedRanges != null)
{
if (from._syncActionRegistered && !_syncActionRegistered)
{
_context.RegisterSyncAction(SyncAction);
_syncActionRegistered = true;
}
Action <ulong, ulong> registerRangeAction = (ulong address, ulong size) =>
{
if (_useGranular)
{
_memoryTrackingGranular.RegisterAction(address, size, _externalFlushDelegate);
}
else
{
_memoryTracking.RegisterAction(_externalFlushDelegate);
}
};
if (_modifiedRanges == null)
{
_modifiedRanges = from._modifiedRanges;
_modifiedRanges.ReregisterRanges(registerRangeAction);
from._modifiedRanges = null;
}
else
{
_modifiedRanges.InheritRanges(from._modifiedRanges, registerRangeAction);
}
}
}
/// <summary>
/// Called when part of the memory for this buffer has been unmapped.
/// Calls are from non-GPU threads.
/// </summary>
/// <param name="address">Start address of the unmapped region</param>
/// <param name="size">Size of the unmapped region</param>
public void Unmapped(ulong address, ulong size)
{
BufferModifiedRangeList modifiedRanges = _modifiedRanges;
modifiedRanges?.Clear(address, size);
UnmappedSequence++;
}