void ApplicationCacheHost::dispose()
{
// FIXME: Oilpan: remove the dispose step when the owning DocumentLoader
// becomes a garbage collected object. Until that time, have the
// DocumentLoader dispose and disable this ApplicationCacheHost when
// it is finalized. Releasing the WebApplicationCacheHost is needed
// to prevent further embedder notifications, which risk accessing an
// invalid DocumentLoader.
setApplicationCache(0);
m_host.clear();
m_documentLoader = nullptr;
}
bool ApplicationCacheHost::swapCache()
{
ApplicationCache* cache = applicationCache();
if (!cache)
return false;
// If the group of application caches to which cache belongs has the lifecycle status obsolete, unassociate document from cache.
if (cache->group()->isObsolete()) {
cache->group()->disassociateDocumentLoader(m_documentLoader);
return true;
}
// If there is no newer cache, raise an INVALID_STATE_ERR exception.
ApplicationCache* newestCache = cache->group()->newestCache();
if (cache == newestCache)
return false;
ASSERT(cache->group() == newestCache->group());
setApplicationCache(newestCache);
InspectorInstrumentation::updateApplicationCacheStatus(m_documentLoader->frame());
return true;
}
