// common implementation
static internal CacheInternal Create() {
CacheCommon cacheCommon = new CacheCommon();
CacheInternal cacheInternal;
#if USE_MEMORY_CACHE
if (UseMemoryCache) {
cacheInternal = new MemCache(cacheCommon);
cacheCommon.AddSRefTarget(cacheInternal);
}
else {
#endif
int numSubCaches = 0;
uint numCPUs = (uint) SystemInfo.GetNumProcessCPUs();
// the number of subcaches is the minimal power of 2 greater
// than or equal to the number of cpus
numSubCaches = 1;
numCPUs -= 1;
while (numCPUs > 0) {
numSubCaches <<= 1;
numCPUs >>= 1;
}
if (numSubCaches == 1) {
cacheInternal = new CacheSingle(cacheCommon, null, 0);
}
else {
cacheInternal = new CacheMultiple(cacheCommon, numSubCaches);
}
#if USE_MEMORY_CACHE
}
#endif
cacheCommon.SetCacheInternal(cacheInternal);
cacheCommon.ResetFromConfigSettings();
return cacheInternal;
}
CacheMultiple _cacheMultiple; /* the CacheMultiple containing this cache */
/*
* Constructs a new Cache.
*/
internal CacheSingle(CacheCommon cacheCommon, CacheMultiple cacheMultiple, int iSubCache) : base(cacheCommon) {
_cacheMultiple = cacheMultiple;
_iSubCache = iSubCache;
_entries = new Hashtable(CacheKeyComparer.GetInstance());
_expires = new CacheExpires(this);
_usage = new CacheUsage(this);
_lock = new object();
_insertBlock = new ManualResetEvent(true);
cacheCommon.AddSRefTarget(this);
}