void CachedResource::removeClient(CachedResourceClient* client)
{
OwnPtr<CachedResourceCallback> callback = m_clientsAwaitingCallback.take(client);
if (callback) {
ASSERT(!m_clients.contains(client));
callback->cancel();
callback.clear();
} else {
ASSERT(m_clients.contains(client));
m_clients.remove(client);
didRemoveClient(client);
}
bool deleted = deleteIfPossible();
if (!deleted && !hasClients()) {
if (inCache()) {
memoryCache()->removeFromLiveResourcesSize(this);
memoryCache()->removeFromLiveDecodedResourcesList(this);
}
if (!m_switchingClientsToRevalidatedResource)
allClientsRemoved();
destroyDecodedDataIfNeeded();
if (response().cacheControlContainsNoStore() && url().protocolIs("https")) {
// RFC2616 14.9.2:
// "no-store: ... MUST make a best-effort attempt to remove the information from volatile storage as promptly as possible"
// "... History buffers MAY store such responses as part of their normal operation."
// We allow non-secure content to be reused in history, but we do not allow secure content to be reused.
memoryCache()->remove(this);
}
memoryCache()->prune();
}
// This object may be dead here.
}
void Resource::removeClient(ResourceClient* client)
{
ASSERT(hasClient(client));
if (m_finishedClients.contains(client))
m_finishedClients.remove(client);
else if (m_clientsAwaitingCallback.contains(client))
m_clientsAwaitingCallback.remove(client);
else
m_clients.remove(client);
didRemoveClient(client);
if (m_clientsAwaitingCallback.isEmpty())
ResourceCallback::callbackHandler()->cancel(this);
bool deleted = deleteIfPossible();
if (!deleted && !hasClients()) {
memoryCache()->makeDead(this);
if (!m_switchingClientsToRevalidatedResource)
allClientsRemoved();
// RFC2616 14.9.2:
// "no-store: ... MUST make a best-effort attempt to remove the information from volatile storage as promptly as possible"
// "... History buffers MAY store such responses as part of their normal operation."
// We allow non-secure content to be reused in history, but we do not allow secure content to be reused.
if (hasCacheControlNoStoreHeader() && url().protocolIs("https")) {
memoryCache()->remove(this);
memoryCache()->prune();
} else {
memoryCache()->prune(this);
}
}
// This object may be dead here.
}
void CachedResource::clearLoader()
{
ASSERT(m_loader);
m_identifierForLoadWithoutResourceLoader = m_loader->identifier();
m_loader = nullptr;
deleteIfPossible();
}
void CachedResource::unregisterHandle(CachedResourceHandleBase* h)
{
ASSERT(m_handleCount > 0);
--m_handleCount;
if (m_resourceToRevalidate)
m_handlesToRevalidate.remove(h);
if (!m_handleCount)
deleteIfPossible();
}
void CachedResource::clearResourceToRevalidate()
{
ASSERT(m_resourceToRevalidate);
if (m_switchingClientsToRevalidatedResource)
return;
// A resource may start revalidation before this method has been called, so check that this resource is still the proxy resource before clearing it out.
if (m_resourceToRevalidate->m_proxyResource == this) {
m_resourceToRevalidate->m_proxyResource = 0;
m_resourceToRevalidate->deleteIfPossible();
}
m_handlesToRevalidate.clear();
m_resourceToRevalidate = 0;
deleteIfPossible();
}
void CachedResource::clearResourceToRevalidate()
{
ASSERT(m_resourceToRevalidate);
ASSERT(m_resourceToRevalidate->m_proxyResource == this);
if (m_switchingClientsToRevalidatedResource)
return;
m_resourceToRevalidate->m_proxyResource = nullptr;
m_resourceToRevalidate->deleteIfPossible();
m_handlesToRevalidate.clear();
m_resourceToRevalidate = nullptr;
deleteIfPossible();
}
void Resource::unregisterHandle(ResourcePtrBase* h)
{
assertAlive();
ASSERT(m_handleCount > 0);
--m_handleCount;
if (!m_handleCount) {
if (deleteIfPossible())
return;
unlock();
} else if (m_handleCount == 1 && memoryCache()->contains(this)) {
unlock();
if (!hasClients())
memoryCache()->prune(this);
}
}
void CachedResource::removeClient(CachedResourceClient& client)
{
auto callback = m_clientsAwaitingCallback.take(&client);
if (callback) {
ASSERT(!m_clients.contains(&client));
callback->cancel();
callback = nullptr;
} else {
ASSERT(m_clients.contains(&client));
m_clients.remove(&client);
didRemoveClient(client);
}
if (deleteIfPossible()) {
// `this` object is dead here.
return;
}
if (hasClients())
return;
auto& memoryCache = MemoryCache::singleton();
if (allowsCaching() && inCache()) {
memoryCache.removeFromLiveResourcesSize(*this);
memoryCache.removeFromLiveDecodedResourcesList(*this);
}
if (!m_switchingClientsToRevalidatedResource)
allClientsRemoved();
destroyDecodedDataIfNeeded();
if (!allowsCaching())
return;
if (response().cacheControlContainsNoStore() && url().protocolIs("https")) {
// RFC2616 14.9.2:
// "no-store: ... MUST make a best-effort attempt to remove the information from volatile storage as promptly as possible"
// "... History buffers MAY store such responses as part of their normal operation."
// We allow non-secure content to be reused in history, but we do not allow secure content to be reused.
memoryCache.remove(*this);
}
memoryCache.pruneSoon();
}
