/// <summary>
/// WeakIntern the given InternableString.
/// </summary>
public string InternableToString(ref InternableString candidate)
{
if (candidate.Length == 0)
{
return(string.Empty);
}
InternResult resultForStatistics = Intern(ref candidate, out string internedString);
#if DEBUG
string expectedString = candidate.ExpensiveConvertToString();
if (!String.Equals(internedString, expectedString))
{
throw new InvalidOperationException(String.Format("Interned string {0} should have been {1}", internedString, expectedString));
}
#endif
if (_internCallCountsByString != null)
{
lock (_internCallCountsByString)
{
switch (resultForStatistics)
{
case InternResult.FoundInWeakStringCache:
_regularInternHits++;
break;
case InternResult.AddedToWeakStringCache:
_regularInternMisses++;
break;
}
_internCallCountsByString.TryGetValue(internedString, out int priorCount);
_internCallCountsByString[internedString] = priorCount + 1;
if (!candidate.ReferenceEquals(internedString))
{
// Reference changed so 'candidate' is now released and should save memory.
_internEliminatedStrings++;
_internEliminatedChars += candidate.Length;
}
}
}
return(internedString);
}
/// <summary>
/// Version of Intern that gathers statistics
/// </summary>
private string InternWithStatistics <T>(T candidate) where T : IInternable
{
lock (_missedHardcodedStrings)
{
InternResult internResult = TryIntern(candidate, out string result);
switch (internResult)
{
case InternResult.MatchedHardcodedString:
_hardcodedInternHits++;
break;
case InternResult.FoundInWeakStringCache:
_regularInternHits++;
break;
case InternResult.AddedToWeakStringCache:
_regularInternMisses++;
break;
case InternResult.RejectedFromInterning:
_rejectedStrings++;
break;
}
if (internResult != InternResult.MatchedHardcodedString && internResult != InternResult.RejectedFromInterning)
{
_missedHardcodedStrings.TryGetValue(result, out int priorCount);
_missedHardcodedStrings[result] = priorCount + 1;
}
if (!candidate.ReferenceEquals(result))
{
// Reference changed so 'candidate' is now released and should save memory.
_internEliminatedStrings++;
_internEliminatedChars += candidate.Length;
}
return(result);
}
}
