static void CheckForDeadlocks(object arg)
{
lock (executing)
{
bool newSuspects = false;
List <AmnesiaDbCommand> suspects = null;
foreach (var cmd in executing)
{
if ((DateTime.Now - cmd.executionStartTime).TotalMilliseconds > DEADLOCK_WARNING_MS && !cmd.deadlockSuspected)
{
if (!cmd.deadlockSuspected)
{
cmd.deadlockSuspected = true;
newSuspects = true;
}
if (suspects == null)
{
suspects = new List <AmnesiaDbCommand>();
}
suspects.Add(cmd);
}
}
if (newSuspects)
{
for (int i = 0; i < suspects.Count; ++i)
{
AmnesiaDbCommand cmd = suspects[i];
if (i == 0)
{
Session.AsyncLog.Write("These commands have been executing for a long time and may be deadlocked:");
}
Session.AsyncLog.Write("#{2} [+{0}ms] {1}", (DateTime.Now - cmd.executionStartTime).TotalMilliseconds, cmd.CommandText, i + 1);
Session.AsyncLog.Write(new StackTrace(cmd.executingThread, true).ToString());
}
}
}
}
