internal /*public*/ void DoDelete(HttpContext context)
{
string key = CreateKey(context.Request);
CacheStoreProvider cacheInternal = HttpRuntime.Cache.InternalCache;
CachedContent content = (CachedContent)cacheInternal.Get(key);
/* If the item isn't there, we probably took too long to run. */
if (content == null)
{
ReportNotFound(context);
return;
}
int lockCookie;
if (!GetOptionalNonNegativeInt32HeaderValue(context, StateHeaders.LOCKCOOKIE_NAME, out lockCookie))
{
return;
}
content._spinLock.AcquireWriterLock();
try {
if (content._content == null)
{
ReportNotFound(context);
return;
}
/* Only remove the item if we are the owner */
if (content._locked && (lockCookie == -1 || content._lockCookie != lockCookie))
{
ReportLocked(context, content);
return;
}
/*
* If not locked, keep it locked until it is completely removed.
* Prevent overwriting when we drop the lock.
*/
content._locked = true;
content._lockCookie = 0;
}
finally {
content._spinLock.ReleaseWriterLock();
}
cacheInternal.Remove(key);
}
// Remove an item. Note that the item is originally obtained by GetExclusive
// Same note as Set on lockId
public override void RemoveItem(HttpContext context,
String id,
object lockId,
SessionStateStoreData item)
{
Debug.Assert(lockId != null, "lockId != null");
string key = CreateSessionStateCacheKey(id);
CacheStoreProvider cacheInternal = HttpRuntime.Cache.InternalCache;
int lockCookie = (int)lockId;
SessionIDManager.CheckIdLength(id, true /* throwOnFail */);
InProcSessionState state = (InProcSessionState)cacheInternal.Get(key);
/* If the item isn't there, we probably took too long to run. */
if (state == null)
{
return;
}
state._spinLock.AcquireWriterLock();
try {
/* Only remove the item if we are the owner */
if (!state._locked || state._lockCookie != lockCookie)
{
return;
}
/* prevent overwriting when we drop the lock */
state._lockCookie = 0;
}
finally {
state._spinLock.ReleaseWriterLock();
}
cacheInternal.Remove(key);
TraceSessionStats();
}
// Remove CachedPathData when the first request for the path results in a
// 400 range error. We need to remove all data up the path to account for
// virtual files.
// An example of a 400 range error is "path not found".
static internal void RemoveBadPathData(CachedPathData pathData)
{
CacheStoreProvider cacheInternal = HttpRuntime.Cache.InternalCache;
string configPath = pathData._configPath;
string key = CreateKey(configPath);
while (pathData != null && !pathData.CompletedFirstRequest && !pathData.Exists)
{
cacheInternal.Remove(key);
configPath = ConfigPathUtility.GetParent(configPath);
if (configPath == null)
{
break;
}
key = CreateKey(configPath);
pathData = (CachedPathData)cacheInternal.Get(key);
}
}