internal static unsafe BufferDescriptor Read(LogHeader logHeader, CachedBinaryReader reader, EventListener listener)
{
var pos = reader.Position;
var header = BufferHeader.Read (reader);
if (header == null)
return null;
if (!reader.LoadData (header.Length)) {
reader.Position = pos;
return null;
}
fixed (byte* buffer = reader.buffer) {
// FIXME: unset the buffer pointer after this block!
reader.SetBufferPointer (buffer);
var result = new BufferDescriptor (pos, header);
try {
listener.ReadBufferEvents (logHeader, result, reader);
} catch (Exception e) {
Console.WriteLine ("error while reading event !");
Console.WriteLine (e);
}
return result;
}
}
internal void ReadBufferEvents(LogHeader logHeader, BufferDescriptor buffer, CachedBinaryReader reader)
{
CurrentBuffer = buffer;
HandleBufferStartRead ();
while (!reader.IsBufferEmpty) {
byte info = reader.ReadByte ();
var type = (byte)(info & 0xF);
byte extendedInfo = (byte)(info & 0xF0);
ulong timeDiff;
switch (type) {
case EventType.Method: {
timeDiff = reader.ReadULeb128 ();
Time += timeDiff;
buffer.RecordTime (Time);
switch (extendedInfo) {
case TypeMethod.Leave:
var method = reader.ReadSLeb128 ();
MethodBase += method;
HandleMethodLeave ();
break;
case TypeMethod.Enter:
method = reader.ReadSLeb128 ();
MethodBase += method;
HandleMethodEnter ();
break;
case TypeMethod.ExcLeave:
method = reader.ReadSLeb128 ();
MethodBase += method;
HandleMethodExcLeave ();
break;
case TypeMethod.Jit:
method = reader.ReadSLeb128 ();
MethodBase += method;
var codeAddress = FixPointer (logHeader, buffer.Header.PtrBase + reader.ReadSLeb128 ());
var codeSize = reader.ReadULeb128 ();
var name = reader.ReadNullTerminatedString ();
HandleMethodJit (codeAddress, codeSize, name);
break;
default:
throw new InvalidOperationException ("Unknown method event type:" + extendedInfo);
}
break;
}
case EventType.Alloc: {
timeDiff = reader.ReadULeb128 ();
Time += timeDiff;
buffer.RecordTime (Time);
var ptr = reader.ReadSLeb128 ();
var obj = reader.ReadSLeb128 ();
var size = reader.ReadULeb128 ();
Backtrace backtrace;
if ((extendedInfo & TypeAlloc.BacktraceBit) == TypeAlloc.BacktraceBit) {
backtrace = Backtrace.Read (reader);
} else {
backtrace = null;
}
HandleAlloc (ptr, obj, size, backtrace);
break;
}
case EventType.Gc: {
timeDiff = reader.ReadULeb128 ();
Time += timeDiff;
buffer.RecordTime (Time);
switch (extendedInfo) {
case TypeGc.Event:
var gcEventType = (MonoGCEvent)reader.ReadULeb128 ();
var generation = reader.ReadULeb128 ();
HandleGc (gcEventType, generation);
break;
case TypeGc.Resize:
var heapSize = reader.ReadULeb128 ();
HandleResizeGc (heapSize);
break;
case TypeGc.Move:
ulong num = reader.ReadULeb128 ();
var objAddr = new long[num];
for (ulong i = 0; i < num; i++) {
objAddr [i] = reader.ReadSLeb128 ();
}
HandleMoveGc (objAddr);
break;
case TypeGc.HandleCreated:
var handleType = (System.Runtime.InteropServices.GCHandleType)reader.ReadULeb128 ();
var handle = reader.ReadULeb128 ();
var obja = reader.ReadSLeb128 ();
HandleHandleCreatedGc (handleType, handle, obja);
break;
case TypeGc.HandleDestroyed:
handleType = (System.Runtime.InteropServices.GCHandleType)reader.ReadULeb128 ();
handle = reader.ReadULeb128 ();
HandleHandleDestroyedGc (handleType, handle);
break;
default:
throw new InvalidOperationException ("unknown gc type:" + extendedInfo);
}
break;
}
case EventType.Metadata: {
timeDiff = reader.ReadULeb128 ();
Time += timeDiff;
buffer.RecordTime (Time);
byte mtype = reader.ReadByte ();
long pointer = reader.ReadSLeb128 ();
switch (mtype) {
case TypeMetadata.Class:
var image = reader.ReadSLeb128 ();
var flags = reader.ReadULeb128 ();
if (flags != 0)
throw new Exception ("Flags should be 0");
var name = reader.ReadNullTerminatedString ();
HandleMetaDataClass (pointer, image, name);
break;
case TypeMetadata.Image:
flags = reader.ReadULeb128 ();
if (flags != 0)
throw new Exception ("Flags should be 0");
name = reader.ReadNullTerminatedString ();
HandleMetaDataImage (pointer, name);
break;
case TypeMetadata.Thread:
flags = reader.ReadULeb128 ();
if (flags != 0)
throw new Exception ("Flags should be 0");
name = reader.ReadNullTerminatedString ();
HandleMetaDataThread (pointer, name);
break;
default:
throw new InvalidOperationException ("Unknown metadata event type:" + type);
}
break;
}
case EventType.Exception: {
timeDiff = reader.ReadULeb128 ();
Time += timeDiff;
buffer.RecordTime (Time);
switch (extendedInfo & (TypeException.BacktraceBit - 1)) {
case TypeException.Clause:
var clauseType = reader.ReadULeb128 ();
var clauseNum = reader.ReadULeb128 ();
var method = reader.ReadSLeb128 ();
MethodBase += method;
HandleExceptionClause (clauseType, clauseNum);
break;
case TypeException.Throw:
var obj = reader.ReadSLeb128 ();
Backtrace backtrace;
if ((extendedInfo & TypeException.BacktraceBit) == TypeException.BacktraceBit) {
backtrace = Backtrace.Read (reader);
} else {
backtrace = null;
}
HandleExceptionThrow (obj, backtrace);
break;
default:
throw new InvalidOperationException ("Unknown exception event type:" + (extendedInfo & (TypeException.BacktraceBit - 1)));
}
break;
}
case EventType.Monitor: {
timeDiff = reader.ReadULeb128 ();
Time += timeDiff;
buffer.RecordTime (Time);
var obj = reader.ReadSLeb128 ();
byte ev = (byte)((extendedInfo >> 4) & 0x3);
Backtrace backtrace;
if (ev == TypeMonitor.ProfilerMonitorContention && (extendedInfo & TypeMonitor.BacktraceBit) == TypeMonitor.BacktraceBit) {
backtrace = Backtrace.Read (reader);
} else {
backtrace = null;
}
HandleMonitor (obj, backtrace);
break;
}
case EventType.Sample:
switch (extendedInfo) {
case TypeSample.Hit:
var sampleType = (SampleType)reader.ReadULeb128 ();
var timeStamp = reader.ReadULeb128 ();
var count = reader.ReadULeb128 ();
var instructionPointers = new long[count];
for (ulong i = 0; i < count; i++) {
instructionPointers[i] = FixPointer (logHeader, buffer.Header.PtrBase + reader.ReadSLeb128 ());
}
buffer.RecordTime (timeStamp);
HandleSampleHit (sampleType, timeStamp, instructionPointers);
break;
case TypeSample.USym:
var address = FixPointer (logHeader, buffer.Header.PtrBase + reader.ReadSLeb128 ());
var size = reader.ReadULeb128 ();
var name = reader.ReadNullTerminatedString ();
HandleSampleUSym (address, size, name);
break;
case TypeSample.UBin:
timeDiff = reader.ReadULeb128 ();
Time += timeDiff;
buffer.RecordTime (Time);
address = reader.ReadSLeb128 ();
var offset = reader.ReadULeb128 ();
size = reader.ReadULeb128 ();
name = reader.ReadNullTerminatedString ();
HandleSampleUBin (address, offset, size, name);
break;
case TypeSample.CountersDesc:
var counters = new List<Tuple<ulong, string, ulong, ulong, ulong, ulong>> ();
var len = reader.ReadULeb128 ();
for (ulong i = 0; i < len; i++) {
var csection = reader.ReadULeb128 ();
var cname = reader.ReadNullTerminatedString ();
var ctype = reader.ReadULeb128 ();
var cunit = reader.ReadULeb128 ();
var cvariance = reader.ReadULeb128 ();
var cindex = reader.ReadULeb128 ();
counters.Add (Tuple.Create<ulong, string, ulong, ulong, ulong, ulong> (
csection, cname, ctype, cunit, cvariance, cindex
));
}
HandleSampleCountersDesc (counters);
break;
case TypeSample.Counters:
var samples = new List<Tuple<ulong, ulong, object>> ();
var timestamp = reader.ReadULeb128 ();
while (true) {
var sindex = reader.ReadULeb128 ();
if (sindex == 0)
break;
object sval;
var stype = reader.ReadULeb128 ();
switch (stype) {
case TypeCountersSample.Int:
case TypeCountersSample.Long:
case TypeCountersSample.Word:
case TypeCountersSample.TimeInterval:
CountersSampleValues [sindex] = sval = reader.ReadSLeb128 ()
+ (CountersSampleValues.ContainsKey (sindex) ? (long)(CountersSampleValues [sindex]) : 0);
break;
case TypeCountersSample.UInt:
case TypeCountersSample.ULong:
CountersSampleValues [sindex] = sval = reader.ReadULeb128 ()
+ (CountersSampleValues.ContainsKey (sindex) ? (ulong)(CountersSampleValues [sindex]) : 0);
break;
case TypeCountersSample.Double:
sval = reader.ReadDouble ();
break;
case TypeCountersSample.String:
sval = reader.ReadULeb128 () == 1 ? reader.ReadNullTerminatedString () : null;
break;
default:
throw new InvalidOperationException ("Unknown counter sample type:" + stype);
}
samples.Add (Tuple.Create<ulong, ulong, object> (sindex, stype, sval));
}
HandleSampleCounters (timestamp, samples);
break;
default:
throw new InvalidOperationException ("Unknown sample event:" + extendedInfo);
}
break;
case EventType.Heap: {
switch (extendedInfo) {
case TypeHeap.Start:
timeDiff = reader.ReadULeb128 ();
Time += timeDiff;
buffer.RecordTime (Time);
HandleHeapStart ();
break;
case TypeHeap.End:
timeDiff = reader.ReadULeb128 ();
Time += timeDiff;
buffer.RecordTime (Time);
HandleHeapEnd ();
break;
case TypeHeap.Object:
var obj = reader.ReadSLeb128 ();
var cl = reader.ReadSLeb128 ();
var size = reader.ReadULeb128 ();
ulong num = reader.ReadULeb128 ();
var objectRefs = new long[num];
var relOffsets = new ulong[num];
for (ulong i = 0; i < num; i++) {
relOffsets [i] = reader.ReadULeb128 ();
objectRefs [i] = reader.ReadSLeb128 ();
}
HandleHeapObject (obj, cl, size, relOffsets, objectRefs);
break;
case TypeHeap.Root:
ulong numRoots = reader.ReadULeb128 ();
var numGc = reader.ReadULeb128 ();
var objects = new long [numRoots];
var rootTypes = new MonoProfileGCRootType [numRoots];
var extraInfos = new ulong [numRoots];
for (ulong i = 0; i < numRoots; i++) {
objects[i] = reader.ReadSLeb128 ();
rootTypes[i] = (MonoProfileGCRootType)reader.ReadULeb128 ();
extraInfos[i] = reader.ReadULeb128 ();
}
HandleHeapRoot (numRoots, numGc, objects, rootTypes, extraInfos);
break;
default:
throw new InvalidOperationException ("Unknown heap event type:" + extendedInfo);
}
break;
}
default:
throw new InvalidOperationException ("invalid event type " + type);
}
}
CurrentBuffer = null;
HandleBufferEndRead ();
}
public BufferDescriptor TryReadBuffer(BufferDescriptor bufferDescriptor, EventListener listener)
{
if (bufferDescriptor != null)
Reader.Position = bufferDescriptor.FilePosition;
return BufferDescriptor.Read (Header, Reader, listener);
}