public const int REC_PER_PAGE_DEFAULT = 7; //must be prime
#endregion
#region .ctor
internal Table(CacheStore store, string name, TableOptions opt)
{
var bucketCount = opt != null ? opt.BucketCount : 0;
var recPerPage = opt != null ? opt.RecPerPage : 0;
var lockCount = opt != null ? opt.LockCount : 0;
if (opt != null)
{
MaxAgeSec = opt.MaxAgeSec;
ParallelSweep = opt.ParallelSweep;
}
Debug.Assert(store != null);
Debug.Assert(name != null);
if (bucketCount <= 0)
{
bucketCount = BUCKET_COUNT_DEFAULT;
}
if (recPerPage <= 0)
{
recPerPage = REC_PER_PAGE_DEFAULT;
}
if (bucketCount == recPerPage)
{
recPerPage += 7; //prime
store.log(Log.MessageType.Warning,
StringConsts.CACHE_TABLE_CTOR_SIZES_WARNING,
parameters: "Table: {0} BucketCount: {1} RecPerPage: {2}".Args(name, bucketCount, recPerPage));
}
m_Store = store;
m_Name = name;
m_BucketCount = bucketCount;
m_RecPerPage = recPerPage;
m_Buckets = new Bucketed[m_BucketCount];
m_LockCount = lockCount > 0 ? lockCount : System.Environment.ProcessorCount * 16;
m_Locks = new object[m_LockCount];
for (var i = 0; i < m_LockCount; i++)
{
m_Locks[i] = new object();
}
}
private void sweepBucket(DateTime now, Bucketed bucketed)
{
if (bucketed == null)
{
return;
}
if (bucketed is CacheRec)
{
sweepCacheRec(now, (CacheRec)bucketed);
return;
}
var page = (Page)bucketed;
for (int i = 0; i < m_RecPerPage; i++)
{
var rec = page.m_Records[i];
if (rec != null)
{
sweepCacheRec(now, rec);
}
}
Interlocked.Increment(ref stat_SweepPageCount);
}
