void CreateForwardReference(ulong targetAddress, GcObject source, int referenceNumber)
{
ForwardReference nextForwardReference;
addressToForwardReferences.TryGetValue(targetAddress, out nextForwardReference);
addressToForwardReferences[targetAddress] = new ForwardReference(source, referenceNumber, nextForwardReference);
}
private void ReadEventPipeTimeInfo()
{
// Read and check the type name
_deserializer.ReadStringAndVerify("Microsoft.DotNet.Runtime.EventPipeFile");
// Read tag and check
_deserializer.ReadByteAndVerify(0x6 /*EndObject tag*/);
// Read end of event stream marker
ForwardReference reference = _deserializer.ReadForwardReference();
_endOfEventStream = _deserializer.ResolveForwardReference(reference, preserveCurrent: true);
// Read the date and time of trace start.
var year = _deserializer.ReadInt16();
var month = _deserializer.ReadInt16();
var dayOfWeek = _deserializer.ReadInt16();
var day = _deserializer.ReadInt16();
var hour = _deserializer.ReadInt16();
var minute = _deserializer.ReadInt16();
var second = _deserializer.ReadInt16();
var milliseconds = _deserializer.ReadInt16();
_syncTimeUTC = new DateTime(year, month, day, hour, minute, second, milliseconds, DateTimeKind.Utc);
// Read the start timestamp.
sessionStartTimeQPC = (long)_deserializer.ReadInt64();
_syncTimeQPC = sessionStartTimeQPC;
// Read the clock frequency.
_QPCFreq = _deserializer.ReadInt64();
}
GcObject CreateRootObject()
{
GcObject rootObject = GcObject.CreateGcObject(rootCount);
rootObject.TypeSizeStackTraceId = GetOrCreateGcType("<root>");
GcObject unknownObject = GcObject.CreateGcObject(0);
unknownObject.TypeSizeStackTraceId = GetOrCreateGcType("<unknown type>");
for (int i = 0; i < rootCount; i++)
{
if (roots[i] == null)
{
roots[i] = idToObject[rootIDs[i]];
if (roots[i] == null)
{
roots[i] = unknownObject;
}
}
roots[i].parent = null;
roots[i].InterestLevel = InterestLevel.Interesting;
rootObject.SetReference(i, roots[i]);
}
// patch up any unresolved forward references by making them point to "unknownObject"
foreach (ForwardReference head in addressToForwardReferences.Values)
{
for (ForwardReference forwardReference = head; forwardReference != null; forwardReference = forwardReference.next)
{
forwardReference.source.SetReference(forwardReference.referenceNumber, unknownObject);
}
}
addressToForwardReferences.Clear();
return(rootObject);
}
public void FromStream(Deserializer deserializer)
{
_fileFormatVersionNumber = deserializer.VersionBeingRead;
if (deserializer.VersionBeingRead >= 3)
{
var startEventStreamReference = deserializer.ReadForwardReference();
_startEventOfStream = deserializer.ResolveForwardReference(startEventStreamReference, preserveCurrent: true);
}
ForwardReference reference = deserializer.ReadForwardReference();
_endOfEventStream = deserializer.ResolveForwardReference(reference, preserveCurrent: true);
// The start time is stored as a SystemTime which is a bunch of shorts, convert to DateTime.
short year = deserializer.ReadInt16();
short month = deserializer.ReadInt16();
short dayOfWeek = deserializer.ReadInt16();
short day = deserializer.ReadInt16();
short hour = deserializer.ReadInt16();
short minute = deserializer.ReadInt16();
short second = deserializer.ReadInt16();
short milliseconds = deserializer.ReadInt16();
_syncTimeUTC = new DateTime(year, month, day, hour, minute, second, milliseconds, DateTimeKind.Utc);
deserializer.Read(out _syncTimeQPC);
deserializer.Read(out _QPCFreq);
sessionStartTimeQPC = _syncTimeQPC;
if (deserializer.VersionBeingRead >= 3)
{
deserializer.Read(out pointerSize);
deserializer.Read(out _processId);
deserializer.Read(out numberOfProcessors);
deserializer.Read(out _expectedCPUSamplingRate);
}
else
{
_processId = 0; // V1 && V2 tests expect 0 for process Id
pointerSize = 8; // V1 EventPipe only supports Linux which is x64 only.
numberOfProcessors = 1;
_startEventOfStream = deserializer.Current; // Events immediately after the header.
}
}
internal ForwardReference(GcObject source, int referenceNumber, ForwardReference next)
{
this.source = source;
this.referenceNumber = referenceNumber;
this.next = next;
}