private static ulong[] GetPmcCounters(UInt16 extendedDataCount, IntPtr extendedData)
{
for (int ext = 0; ext < extendedDataCount; ext++)
{
unsafe
{
EventHeaderExtendedDataItem extendedDataItem =
*((EventHeaderExtendedDataItem *)extendedData.ToPointer());
if (extendedDataItem.ExtType != EventHeaderExtType.PmcCounters)
{
continue;
}
int len = extendedDataItem.DataSize / sizeof(UInt64);
var pmcCodes = new ulong[len];
fixed(UInt64 *pCodes = pmcCodes)
{
TypeServiceUtil.MemCopy((byte *)extendedDataItem.DataPtr.ToPointer(), (byte *)pCodes,
len * sizeof(UInt64));
}
return(pmcCodes);
}
}
return(s_EmptyPmcCounters);
}
private static Guid GetRelatedActivityId(UInt16 extendedDataCount, IntPtr extendedData, UInt16 flags)
{
Guid relatedActivityId = Guid.Empty;
for (int ext = 0; ext < extendedDataCount; ext++)
{
unsafe
{
EventHeaderExtendedDataItem extendedDataItem =
*((EventHeaderExtendedDataItem *)extendedData.ToPointer());
if (extendedDataItem.ExtType != EventHeaderExtType.RelatedActivityId)
{
continue;
}
var value = new byte[16];
fixed(byte *pb = value)
{
TypeServiceUtil.MemCopy((byte *)extendedDataItem.DataPtr.ToPointer(), pb, 16);
}
relatedActivityId = new Guid(value);
break;
}
}
return(relatedActivityId);
}
public byte[] ReadBytes(uint length)
{
var value = new byte[length];
fixed(byte *pb = value)
{
TypeServiceUtil.MemCopy(_data, pb, (int)length);
}
_data += length;
return(value);
}