public static HGlobalBuffer GetRetainableEventDataBuffer(this KStudioEvent eventObj)
{
HGlobalBuffer value = null;
if (eventObj != null)
{
lock (KStudioEventExtensions.buffers)
{
// this list should be short (at max a couple dozen); if it starts to get longer than that,
// something is probably saving more large raw event data than it should be or the GC isn't kicking in.
Debug.Assert(KStudioEventExtensions.buffers.Count < 100);
List <int> toRemove = new List <int>();
for (int i = 0; i < KStudioEventExtensions.buffers.Count; ++i)
{
WeakReferenceTuple tuple = KStudioEventExtensions.buffers[i];
KStudioEvent eventKey;
if (tuple.EventReference.TryGetTarget(out eventKey))
{
HGlobalBuffer bufferValue;
if (tuple.BufferReference.TryGetTarget(out bufferValue))
{
if (eventKey == eventObj)
{
value = bufferValue;
break;
}
}
else
{
toRemove.Insert(0, i);
}
}
else
{
toRemove.Insert(0, i);
}
}
foreach (int i in toRemove)
{
KStudioEventExtensions.buffers.RemoveAt(i);
}
if (value == null)
{
uint bufferSize;
IntPtr buffer;
eventObj.AccessUnderlyingEventDataBuffer(out bufferSize, out buffer);
if (bufferSize != 0)
{
value = new HGlobalBuffer(bufferSize);
UnsafeNativeMethods.RtlMoveMemory(value.Buffer, buffer, bufferSize);
WeakReferenceTuple newTuple = new WeakReferenceTuple(eventObj, value);
KStudioEventExtensions.buffers.Insert(0, newTuple);
}
}
}
}
return(value);
}
public static HGlobalBuffer GetRetainableEventDataBuffer(this KStudioEvent eventObj)
{
HGlobalBuffer value = null;
if (eventObj != null)
{
lock (KStudioEventExtensions.buffers)
{
// this list should be short (at max a couple dozen); if it starts to get longer than that,
// something is probably saving more large raw event data than it should be or the GC isn't kicking in.
Debug.Assert(KStudioEventExtensions.buffers.Count < 100);
List<int> toRemove = new List<int>();
for (int i = 0; i < KStudioEventExtensions.buffers.Count; ++i)
{
WeakReferenceTuple tuple = KStudioEventExtensions.buffers[i];
KStudioEvent eventKey;
if (tuple.EventReference.TryGetTarget(out eventKey))
{
HGlobalBuffer bufferValue;
if (tuple.BufferReference.TryGetTarget(out bufferValue))
{
if (eventKey == eventObj)
{
value = bufferValue;
break;
}
}
else
{
toRemove.Insert(0, i);
}
}
else
{
toRemove.Insert(0, i);
}
}
foreach (int i in toRemove)
{
KStudioEventExtensions.buffers.RemoveAt(i);
}
if (value == null)
{
uint bufferSize;
IntPtr buffer;
eventObj.AccessUnderlyingEventDataBuffer(out bufferSize, out buffer);
if (bufferSize != 0)
{
value = new HGlobalBuffer(bufferSize);
UnsafeNativeMethods.RtlMoveMemory(value.Buffer, buffer, bufferSize);
WeakReferenceTuple newTuple = new WeakReferenceTuple(eventObj, value);
KStudioEventExtensions.buffers.Insert(0, newTuple);
}
}
}
}
return value;
}
public WeakReferenceTuple(KStudioEvent eventObj, HGlobalBuffer buffer)
{
EventReference = new WeakReference <KStudioEvent>(eventObj);
BufferReference = new WeakReference <HGlobalBuffer>(buffer);
}
public WeakReferenceTuple(KStudioEvent eventObj, HGlobalBuffer buffer)
{
EventReference = new WeakReference<KStudioEvent>(eventObj);
BufferReference = new WeakReference<HGlobalBuffer>(buffer);
}