already_AddRefed<CacheEntryHandle> CacheEntry::ReopenTruncated(bool aMemoryOnly,
nsICacheEntryOpenCallback* aCallback)
{
LOG(("CacheEntry::ReopenTruncated [this=%p]", this));
mLock.AssertCurrentThreadOwns();
// Hold callbacks invocation, AddStorageEntry would invoke from doom prematurly
mPreventCallbacks = true;
nsRefPtr<CacheEntryHandle> handle;
nsRefPtr<CacheEntry> newEntry;
{
mozilla::MutexAutoUnlock unlock(mLock);
// The following call dooms this entry (calls DoomAlreadyRemoved on us)
nsresult rv = CacheStorageService::Self()->AddStorageEntry(
GetStorageID(), GetURI(), GetEnhanceID(),
mUseDisk && !aMemoryOnly,
true, // always create
true, // truncate existing (this one)
getter_AddRefs(handle));
if (NS_SUCCEEDED(rv)) {
newEntry = handle->Entry();
LOG((" exchanged entry %p by entry %p, rv=0x%08x", this, newEntry.get(), rv));
newEntry->AsyncOpen(aCallback, nsICacheStorage::OPEN_TRUNCATE);
} else {
LOG((" exchanged of entry %p failed, rv=0x%08x", this, rv));
AsyncDoom(nullptr);
}
}
mPreventCallbacks = false;
if (!newEntry)
return nullptr;
newEntry->TransferCallbacks(*this);
mCallbacks.Clear();
// Must return a new write handle, since the consumer is expected to
// write to this newly recreated entry. The |handle| is only a common
// reference counter and doesn't revert entry state back when write
// fails and also doesn't update the entry frecency. Not updating
// frecency causes entries to not be purged from our memory pools.
nsRefPtr<CacheEntryHandle> writeHandle =
newEntry->NewWriteHandle();
return writeHandle.forget();
}
already_AddRefed<CacheEntryHandle> CacheEntry::ReopenTruncated(bool aMemoryOnly,
nsICacheEntryOpenCallback* aCallback)
{
LOG(("CacheEntry::ReopenTruncated [this=%p]", this));
mLock.AssertCurrentThreadOwns();
// Hold callbacks invocation, AddStorageEntry would invoke from doom prematurly
mPreventCallbacks = true;
nsRefPtr<CacheEntryHandle> handle;
nsRefPtr<CacheEntry> newEntry;
{
mozilla::MutexAutoUnlock unlock(mLock);
// The following call dooms this entry (calls DoomAlreadyRemoved on us)
nsresult rv = CacheStorageService::Self()->AddStorageEntry(
GetStorageID(), GetURI(), GetEnhanceID(),
mUseDisk && !aMemoryOnly,
true, // always create
true, // truncate existing (this one)
getter_AddRefs(handle));
LOG((" exchanged entry %p by entry %p, rv=0x%08x", this, newEntry.get(), rv));
if (NS_SUCCEEDED(rv)) {
newEntry = handle->Entry();
newEntry->AsyncOpen(aCallback, nsICacheStorage::OPEN_TRUNCATE);
}
else {
AsyncDoom(nullptr);
}
}
mPreventCallbacks = false;
if (!newEntry)
return nullptr;
newEntry->TransferCallbacks(*this);
mCallbacks.Clear();
return handle.forget();
}