private int GetBusyCount()
{
var readDone = TargetObject.ReadField <bool>("m_ReadDone");
var reservedCount = TargetObject.ReadField <int>("m_ReservedCount");
var waitListObject = TargetObject.ReadObjectField("m_WaitList");
var waitListSize = waitListObject.ReadField <int>("_size");
var writeListObject = TargetObject.ReadObjectField("m_WriteList");
var writeListSize = writeListObject.ReadField <int>("_size");
return((readDone ? 0 : 1) + 2 * (waitListSize + writeListSize) + reservedCount);
}
public void Dump(ILogger logger)
{
AsyncRecord asyncRecord = new AsyncRecord(TargetObject);
if (TargetObject.Type.GetFieldByName("m_stateFlags") != null)
{
asyncRecord.TaskStateFlags = TargetObject.ReadField <int>("m_stateFlags");
}
//DebugObjectFields();
ClrInstanceField?stateMachineField = TargetObject.Type.GetFieldByName("StateMachine");
if (stateMachineField != null)
{
asyncRecord.IsStateMachine = true;
asyncRecord.IsValueType = stateMachineField.IsValueType;
int stateFieldOffset = -1;
if (asyncRecord.IsValueType)
{
asyncRecord.StateMachineAddr = new(TargetObject.Address + (ulong)stateMachineField.Offset);
asyncRecord.StateMachineMT = new(stateMachineField.Type.MethodTable);
//stateFieldOffset = stateMachineField.Type.GetFieldByName("<>1__state").Offset;
asyncRecord.StateValue = stateMachineField.Type.GetFieldByName("<>1__state").Read <int>(TargetObject.Address, false);
}
else
{
throw new NotImplementedException();
}
if (stateFieldOffset >= 0 && (asyncRecord.IsValueType || stateFieldOffset != 0))
{
asyncRecord.StateValue = Context.Heap.Runtime.DataTarget.DataReader.Read <int>(asyncRecord.StateMachineAddr.Value + (ulong)stateFieldOffset + 8);
}
}
var stateMachineObject = TargetObject.ReadValueTypeField("StateMachine");
//using (logger.BeginScope(GetAsyncMethodName(stateMachineObject.Type.Name)))
{
if (stateMachineObject.Type.GetFieldByName("<>1__state") == null)
{
logger.LogInformation("state is not found. skipping");
return;
}
var state = stateMachineObject.ReadField <int>("<>1__state");
if (_fullLog)
{
logger.LogInformation($"__state: {state}");
}
if (stateMachineObject.Type.Fields.Any(f => f.Name == "<>4__this"))
{
var thisObject = stateMachineObject.ReadObjectField("<>4__this");
//logger.LogInformation($"this type = {thisObject.Type.Name}");
logger.LogInformation($"{GetAsyncMethodName(stateMachineObject.Type.Name)} in {thisObject.Type.Name}");
}
foreach (var field in stateMachineObject.Type.Fields.Where(field => field.Name.StartsWith("<>u__", StringComparison.Ordinal)).OrderBy(field => field.Name))
{
if (!field.Type.IsValueType)
{
// TODO
logger.LogWarning("SKIP if (!field.Type.IsValueClass)");
continue;
}
var uField = stateMachineObject.ReadValueTypeField(field.Name);
if (!uField.Type.Name.StartsWith("System", StringComparison.Ordinal))
{
// TODO
logger.LogWarning("SKIP if (!uField.Type.Name.StartsWith");
continue;
}
if (uField.Address == Address.Null.Value)
{
// TODO
logger.LogWarning("SKIP uField.Address == NullAddress");
continue;
}
if (uField.Type.Name.StartsWith("System.Runtime.CompilerServices.ValueTaskAwaiter", StringComparison.Ordinal))
{
var valueValueClass = uField.ReadValueTypeField("_value"); // ValueTask
var obj = valueValueClass.ReadObjectField("_obj");
var token = valueValueClass.ReadField <short>("_token");
var continueOnCapturedContext = valueValueClass.ReadField <bool>("_continueOnCapturedContext");
logger.LogInformation($"obj: {obj}\n\ttoken: {token}\n\tcontinueOnCapturedContext: {continueOnCapturedContext}");
// TODO
// logger.LogWarning("SKIP System.Runtime.CompilerServices.ValueTaskAwaiter");
continue;
}
if (uField.Type.Name.StartsWith("System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable<", StringComparison.Ordinal))
{
var valueTask = uField.ReadValueTypeField("_value");
var valueTaskProxy = new ValueTaskProxy(Context, valueTask);
var completed = valueTaskProxy.IsCompleted;
}
else
{
ClrObject uTaskObject = uField.ReadObjectField("m_task");
var statusTask = "NULL";
if (!uTaskObject.IsNull)
{
var taskProxy = new TaskProxy(Context, uTaskObject);
statusTask = $"{taskProxy.Status} (IsCompleted:{taskProxy.IsCompleted}) {field.Type.Name}";
// TASK is System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1+AsyncStateMachineBox`1[[System.Threading.Tasks.VoidTaskResult, System.Private.CoreLib],[Npgsql.NpgsqlReadBuffer+<>c__DisplayClass31_0+<<Ensure>g__EnsureLong|0>d, Npgsql]]
foreach (var refAddress in Context.HeapIndex.GetReferencesTo(uTaskObject.Address))
{
var refObject = Context.Heap.GetObject(refAddress);
if (_fullLog)
{
logger.LogInformation($"ref by {refObject}");
}
if (refObject.Type.EnumerateInterfaces().Any(clrInterface => clrInterface.Name == "System.Runtime.CompilerServices.IAsyncStateMachineBox"))
{
new AsyncStateMachineBoxProxy(Context, refObject).Dump(logger);
}
}
}
//if (_fullLog)
logger.LogInformation($"{field.Name}: {statusTask}");
}
}
}
}