public bool VerifyPoisonMessage(string poisonId, out int crashCount)
{
if (string.IsNullOrEmpty(poisonId))
{
throw new ArgumentNullException("poisonId");
}
if (!this.Enabled || this.storeDriverPoisonInfo.Count == 0)
{
crashCount = 0;
return(false);
}
CrashProperties crashProperties = null;
if (this.storeDriverPoisonInfo.TryGetValue(poisonId, out crashProperties))
{
if (this.IsExpired(crashProperties))
{
this.MarkPoisonMessageHandled(poisonId);
}
else if (this.IsMessagePoison(crashProperties))
{
crashCount = (int)crashProperties.CrashCount;
return(true);
}
}
crashCount = 0;
return(false);
}
public virtual void SavePoisonContext()
{
if (!this.Enabled)
{
return;
}
if (PoisonHandler <TPoisonHandlerContext> .Context == null)
{
TraceHelper.GeneralTracer.TracePass(TraceHelper.MessageProbeActivityId, 0L, "No poison context information stored on the crashing thread. Exiting...");
return;
}
using (RegistryKey registryKey = Registry.LocalMachine.CreateSubKey(this.storeDriverPoisonMsgLocation))
{
TPoisonHandlerContext tpoisonHandlerContext = PoisonHandler <TPoisonHandlerContext> .Context;
string text = tpoisonHandlerContext.ToString();
int num = 1;
if (registryKey.GetValue(text) != null)
{
if (registryKey.GetValueKind(text) != RegistryValueKind.MultiString)
{
registryKey.DeleteValue(text, false);
}
else
{
string[] array = (string[])registryKey.GetValue(text);
if (array == null || array.Length != 2)
{
registryKey.DeleteValue(text, false);
}
else if (!int.TryParse(array[0], out num))
{
registryKey.DeleteValue(text, false);
}
else
{
num++;
}
}
}
else
{
this.DeleteOldestPoisonEntryIfNecessary(registryKey);
}
CrashProperties crashProperties = new CrashProperties((double)num, DateTime.UtcNow);
registryKey.SetValue(text, new string[]
{
Convert.ToString(crashProperties.CrashCount),
crashProperties.LastCrashTime.ToString("u")
}, RegistryValueKind.MultiString);
this.storeDriverPoisonInfo[text] = crashProperties;
}
}
protected virtual bool IsExpired(CrashProperties crashProperties)
{
if (crashProperties == null)
{
return(false);
}
try
{
if (DateTime.UtcNow > crashProperties.LastCrashTime + this.poisonEntryExpiryWindow)
{
return(true);
}
}
catch (ArgumentOutOfRangeException)
{
return(true);
}
return(false);
}
public virtual void Load()
{
using (RegistryKey registryKey = Registry.LocalMachine.CreateSubKey(this.storeDriverPoisonMsgLocation))
{
foreach (string text in registryKey.GetValueNames())
{
bool flag = registryKey.GetValueKind(text) != RegistryValueKind.MultiString;
string[] array = (string[])registryKey.GetValue(text);
if (array.Length != 2)
{
flag = true;
}
int value;
DateTime lastCrashTime;
if (flag)
{
TraceHelper.GeneralTracer.TraceFail <string, RegistryKey>(TraceHelper.MessageProbeActivityId, 0L, "Invalid value {0} in {1} registry key. Deleting it.", text, registryKey);
registryKey.DeleteValue(text, false);
}
else if (!int.TryParse(array[0], out value) || !DateTime.TryParseExact(array[1], "u", DateTimeFormatInfo.InvariantInfo, DateTimeStyles.AllowLeadingWhite | DateTimeStyles.AllowTrailingWhite | DateTimeStyles.AllowInnerWhite | DateTimeStyles.RoundtripKind, out lastCrashTime))
{
TraceHelper.GeneralTracer.TraceFail <string, RegistryKey>(TraceHelper.MessageProbeActivityId, 0L, "Invalid value {0} in {1} registry key. Deleting it.", text, registryKey);
registryKey.DeleteValue(text, false);
}
else
{
CrashProperties crashProperties = new CrashProperties(Convert.ToDouble(value), lastCrashTime);
if (!this.IsExpired(crashProperties))
{
this.storeDriverPoisonInfo[text] = crashProperties;
}
else
{
registryKey.DeleteValue(text, false);
}
}
}
}
this.loaded = true;
}
protected override bool IsMessagePoison(CrashProperties crashProperties)
{
return(!this.IsExpired(crashProperties) && base.IsMessagePoison(crashProperties));
}
protected virtual bool IsMessagePoison(CrashProperties crashProperties)
{
return(crashProperties.CrashCount >= (double)this.PoisonThreshold);
}
