/// <summary>
/// Start trace collection.
/// </summary>
/// <param name="processId">Runtime process to trace</param>
/// <param name="configuration">buffer size and provider configuration</param>
/// <param name="sessionId">session id</param>
/// <returns>Stream</returns>
public static Stream CollectTracing(int processId, SessionConfiguration configuration, out ulong sessionId)
{
sessionId = 0;
var message = new IpcMessage(DiagnosticsServerCommandSet.EventPipe, (byte)EventPipeCommandId.CollectTracing, configuration.Serialize());
var stream = IpcClient.SendMessage(processId, message, out var response);
switch ((DiagnosticsServerCommandId)response.Header.CommandId)
{
case DiagnosticsServerCommandId.OK:
sessionId = BitConverter.ToUInt64(response.Payload);
break;
case DiagnosticsServerCommandId.Error:
// bad...
var hr = BitConverter.ToInt32(response.Payload);
throw new Exception($"Session start FAILED 0x{hr:X8}");
default:
break;
}
return(stream);
}
