private void DoMetrics(LinuxEvent linuxEvent)
{
KeyValuePair <LinuxThreadState, LinuxEvent> sampleInfo;
if (this.EndingStates.TryGetValue(linuxEvent.ThreadID, out sampleInfo))
{
linuxEvent.Period = linuxEvent.TimeMSec - sampleInfo.Value.TimeMSec;
}
// This is check for completed scheduler events, ones that start with prev_comm and have
// corresponding next_comm.
if (linuxEvent.Kind == EventKind.Scheduler)
{
SchedulerEvent schedEvent = (SchedulerEvent)linuxEvent;
if (this.EndingStates.ContainsKey(schedEvent.Switch.PreviousThreadID) &&
this.EndingStates[schedEvent.Switch.PreviousThreadID].Key == LinuxThreadState.CPU_TIME) // Blocking
{
sampleInfo = this.EndingStates[schedEvent.Switch.PreviousThreadID];
this.EndingStates[schedEvent.Switch.PreviousThreadID] =
new KeyValuePair <LinuxThreadState, LinuxEvent>(LinuxThreadState.BLOCKED_TIME, linuxEvent);
linuxEvent.Period = linuxEvent.TimeMSec - sampleInfo.Value.TimeMSec;
}
if (this.EndingStates.TryGetValue(schedEvent.Switch.NextThreadID, out sampleInfo) &&
sampleInfo.Key == LinuxThreadState.BLOCKED_TIME) // Unblocking
{
this.EndingStates[schedEvent.Switch.NextThreadID] =
new KeyValuePair <LinuxThreadState, LinuxEvent>(LinuxThreadState.CPU_TIME, linuxEvent);
// sampleInfo.Value.Period = linuxEvent.Time - sampleInfo.Value.Time;
this.AddThreadPeriod(linuxEvent.ThreadID, sampleInfo.Value.TimeMSec, linuxEvent.TimeMSec);
}
}
else if (linuxEvent.Kind == EventKind.Cpu)
{
int threadid;
if (this.EndingCpuUsage.TryGetValue(linuxEvent.CpuNumber, out threadid) && threadid != linuxEvent.ThreadID) // Unblocking
{
if (this.EndingStates.TryGetValue(threadid, out sampleInfo))
{
this.EndingStates[threadid] =
new KeyValuePair <LinuxThreadState, LinuxEvent>(LinuxThreadState.CPU_TIME, linuxEvent);
sampleInfo.Value.Period = linuxEvent.TimeMSec - sampleInfo.Value.TimeMSec;
this.AddThreadPeriod(linuxEvent.ThreadID, sampleInfo.Value.TimeMSec, linuxEvent.TimeMSec);
}
}
}
this.EndingCpuUsage[linuxEvent.CpuNumber] = linuxEvent.ThreadID;
}
/// <summary>
/// Given a Linux event gotten from the trace, make its corresponding sample for the stack source.
/// </summary>
public StackSourceSample CreateSampleFor(LinuxEvent linuxEvent, BlockedTimeAnalyzer blockedTimeAnalyzer)
{
IEnumerable <Frame> frames = linuxEvent.CallerStacks;
StackSourceCallStackIndex stackIndex = this.currentStackIndex;
var sample = new StackSourceSample(this);
sample.TimeRelativeMSec = linuxEvent.TimeMSec;
sample.Metric = 1;
stackIndex = this.InternFrames(frames.GetEnumerator(), stackIndex, linuxEvent.ProcessID, linuxEvent.ThreadID, blockedTimeAnalyzer);
sample.StackIndex = stackIndex;
return(sample);
}
public void UpdateThreadState(LinuxEvent linuxEvent)
{
if (this.TimeStamp < linuxEvent.TimeMSec)
{
this.TimeStamp = linuxEvent.TimeMSec;
}
if (!this.BeginningStates.ContainsKey(linuxEvent.ThreadID))
{
this.BeginningStates.Add(
linuxEvent.ThreadID,
new KeyValuePair <LinuxThreadState, LinuxEvent>(LinuxThreadState.CPU_TIME, linuxEvent));
this.EndingStates[linuxEvent.ThreadID] = this.BeginningStates[linuxEvent.ThreadID];
}
this.DoMetrics(linuxEvent);
}
public void LinuxEventSampleAssociation(LinuxEvent linuxEvent, StackSourceSample sample)
{
this.LinuxEventSamples[linuxEvent] = sample;
}