private OpportunisticIntern()
{
_smallMruSize = AssignViaEnvironment("MSBUILDSMALLINTERNSIZE", 50);
_largeMruSize = AssignViaEnvironment("MSBUILDLARGEINTERNSIZE", 100);
_hugeMruSize = AssignViaEnvironment("MSBUILDHUGEINTERNSIZE", 100);
_smallMruThreshold = AssignViaEnvironment("MSBUILDSMALLINTERNTHRESHOLD", 50);
_largeMruThreshold = AssignViaEnvironment("MSBUILDLARGEINTERNTHRESHOLD", 70);
_hugeMruThreshold = AssignViaEnvironment("MSBUILDHUGEINTERNTHRESHOLD", 200);
_ginormousThreshold = AssignViaEnvironment("MSBUILDGINORMOUSINTERNTHRESHOLD", 8000);
_interner = _useLegacyInterner
? (IInternerImplementation) new BucketedPrioritizedStringList(gatherStatistics: false, _smallMruSize, _largeMruSize, _hugeMruSize,
_smallMruThreshold, _largeMruThreshold, _hugeMruThreshold, _ginormousThreshold, _useSimpleConcurrency)
: (IInternerImplementation) new WeakStringCacheInterner(gatherStatistics: false);
}
/// <summary>
/// Turn on statistics gathering.
/// </summary>
internal void EnableStatisticsGathering()
{
if (_useLegacyInterner)
{
// Statistics include several 'what if' scenarios such as doubling the size of the MRU lists.
_interner = new BucketedPrioritizedStringList(gatherStatistics: true, _smallMruSize, _largeMruSize, _hugeMruSize, _smallMruThreshold, _largeMruThreshold, _hugeMruThreshold, _ginormousThreshold, _useSimpleConcurrency);
_whatIfInfinite = new BucketedPrioritizedStringList(gatherStatistics: true, int.MaxValue, int.MaxValue, int.MaxValue, _smallMruThreshold, _largeMruThreshold, _hugeMruThreshold, _ginormousThreshold, _useSimpleConcurrency);
_whatIfDoubled = new BucketedPrioritizedStringList(gatherStatistics: true, _smallMruSize * 2, _largeMruSize * 2, _hugeMruSize * 2, _smallMruThreshold, _largeMruThreshold, _hugeMruThreshold, _ginormousThreshold, _useSimpleConcurrency);
_whatIfHalved = new BucketedPrioritizedStringList(gatherStatistics: true, _smallMruSize / 2, _largeMruSize / 2, _hugeMruSize / 2, _smallMruThreshold, _largeMruThreshold, _hugeMruThreshold, _ginormousThreshold, _useSimpleConcurrency);
_whatIfZero = new BucketedPrioritizedStringList(gatherStatistics: true, 0, 0, 0, _smallMruThreshold, _largeMruThreshold, _hugeMruThreshold, _ginormousThreshold, _useSimpleConcurrency);
}
else
{
_interner = new WeakStringCacheInterner(gatherStatistics: true);
}
}