nsCacheSession::nsCacheSession(const char * clientID,
nsCacheStoragePolicy storagePolicy,
bool streamBased)
: mClientID(clientID),
mInfo(0)
{
SetStoragePolicy(storagePolicy);
if (streamBased) MarkStreamBased();
else SetStoragePolicy(nsICache::STORE_IN_MEMORY);
MarkDoomEntriesIfExpired();
}
nsresult
nsCacheEntry::RequestAccess(nsCacheRequest * request, nsCacheAccessMode *accessGranted)
{
nsresult rv = NS_OK;
if (!IsInitialized()) {
// brand new, unbound entry
request->mKey = nsnull; // steal ownership of the key string
if (request->IsStreamBased()) MarkStreamBased();
MarkInitialized();
*accessGranted = request->AccessRequested() & nsICache::ACCESS_WRITE;
NS_ASSERTION(*accessGranted, "new cache entry for READ-ONLY request");
PR_APPEND_LINK(request, &mRequestQ);
return rv;
}
if (IsDoomed()) return NS_ERROR_CACHE_ENTRY_DOOMED;
if (IsStreamData() != request->IsStreamBased()) {
*accessGranted = nsICache::ACCESS_NONE;
return request->IsStreamBased() ?
NS_ERROR_CACHE_DATA_IS_NOT_STREAM : NS_ERROR_CACHE_DATA_IS_STREAM;
}
if (PR_CLIST_IS_EMPTY(&mDescriptorQ)) {
// 1st descriptor for existing bound entry
*accessGranted = request->AccessRequested();
if (*accessGranted & nsICache::ACCESS_WRITE) {
MarkInvalid();
} else {
MarkValid();
}
} else {
// nth request for existing, bound entry
*accessGranted = request->AccessRequested() & ~nsICache::ACCESS_WRITE;
if (!IsValid())
rv = NS_ERROR_CACHE_WAIT_FOR_VALIDATION;
}
PR_APPEND_LINK(request,&mRequestQ);
return rv;
}
nsCacheEntry::nsCacheEntry(nsCString * key,
PRBool streamBased,
nsCacheStoragePolicy storagePolicy)
: mKey(key),
mFetchCount(0),
mLastFetched(0),
mLastModified(0),
mExpirationTime(NO_EXPIRATION_TIME),
mFlags(0),
mDataSize(0),
mCacheDevice(nsnull),
mData(nsnull)
{
MOZ_COUNT_CTOR(nsCacheEntry);
PR_INIT_CLIST(this);
PR_INIT_CLIST(&mRequestQ);
PR_INIT_CLIST(&mDescriptorQ);
if (streamBased) MarkStreamBased();
SetStoragePolicy(storagePolicy);
}
