Index: content/browser/loader/resource_dispatcher_host_impl.cc |
diff --git a/content/browser/loader/resource_dispatcher_host_impl.cc b/content/browser/loader/resource_dispatcher_host_impl.cc |
index a6859df7766d121ad3eae10400f07f5aa514637a..657b385d92993f6612524de071949fcb7e24e7d8 100644 |
--- a/content/browser/loader/resource_dispatcher_host_impl.cc |
+++ b/content/browser/loader/resource_dispatcher_host_impl.cc |
@@ -127,6 +127,15 @@ const int kUserGestureWindowMs = 3500; |
// use. Arbitrarily chosen. |
const double kMaxRequestsPerProcessRatio = 0.45; |
+bool IsDetachableResourceType(ResourceType::Type type) { |
+ switch (type) { |
+ case ResourceType::PREFETCH: |
+ return true; |
+ default: |
+ return false; |
+ } |
+} |
+ |
// Aborts a request before an URLRequest has actually been created. |
void AbortRequestBeforeItStarts(ResourceMessageFilter* filter, |
IPC::Message* sync_result, |
@@ -406,13 +415,16 @@ void ResourceDispatcherHostImpl::CancelRequestsForContext( |
for (LoaderList::iterator i = loaders_to_cancel.begin(); |
i != loaders_to_cancel.end(); ++i) { |
// There is no strict requirement that this be the case, but currently |
- // downloads, streams and transferred requests are the only requests that |
- // aren't cancelled when the associated processes go away. It may be OK for |
- // this invariant to change in the future, but if this assertion fires |
- // without the invariant changing, then it's indicative of a leak. |
- DCHECK((*i)->GetRequestInfo()->is_download() || |
- (*i)->GetRequestInfo()->is_stream() || |
- (*i)->is_transferring()); |
+ // downloads, streams, detachable requests, and transferred requests are the |
+ // only requests that aren't cancelled when the associated processes go |
+ // away. It may be OK for this invariant to change in the future, but if |
+ // this assertion fires without the invariant changing, then it's indicative |
+ // of a leak. |
+ DCHECK( |
+ (*i)->GetRequestInfo()->is_download() || |
+ (*i)->GetRequestInfo()->is_stream() || |
+ (*i)->GetRequestInfo()->is_detached() || |
+ (*i)->is_transferring()); |
} |
#endif |
@@ -694,18 +706,19 @@ void ResourceDispatcherHostImpl::DidReceiveRedirect(ResourceLoader* loader, |
void ResourceDispatcherHostImpl::DidReceiveResponse(ResourceLoader* loader) { |
ResourceRequestInfoImpl* info = loader->GetRequestInfo(); |
+ |
// There should be an entry in the map created when we dispatched the |
- // request. |
+ // request unless it's been detached and the renderer has died. |
OfflineMap::iterator policy_it( |
offline_policy_map_.find(info->GetGlobalRoutingID())); |
if (offline_policy_map_.end() != policy_it) { |
policy_it->second->UpdateStateForSuccessfullyStartedRequest( |
loader->request()->response_info()); |
} else { |
- // We should always have an entry in offline_policy_map_ from when |
- // this request traversed Begin{Download,SaveFile,Request}. |
+ // Unless detached, we should have an entry in offline_policy_map_ from |
+ // when this request traversed Begin{Download,SaveFile,Request}. |
// TODO(rdsmith): This isn't currently true; see http://crbug.com/241176. |
- NOTREACHED(); |
+ DCHECK(info->is_detached()); |
} |
int render_process_id, render_view_id; |
@@ -1073,6 +1086,7 @@ void ResourceDispatcherHostImpl::BeginRequest( |
request_data.transition_type, |
false, // is download |
false, // is stream |
+ false, // is detachable |
allow_download, |
request_data.has_user_gesture, |
request_data.referrer_policy, |
@@ -1101,6 +1115,8 @@ void ResourceDispatcherHostImpl::BeginRequest( |
handler.reset(new SyncResourceHandler(request, sync_result, this)); |
} else { |
handler.reset(new AsyncResourceHandler(request, this)); |
+ if (IsDetachableResourceType(request_data.resource_type)) |
+ extra_info->set_is_detachable(true); |
} |
// The RedirectToFileResourceHandler depends on being next in the chain. |
@@ -1219,7 +1235,8 @@ ResourceRequestInfoImpl* ResourceDispatcherHostImpl::CreateRequestInfo( |
ResourceType::SUB_RESOURCE, |
PAGE_TRANSITION_LINK, |
download, // is_download |
- false, // is_stream |
+ false, // is_stream |
+ false, // is_detachable |
download, // allow_download |
false, // has_user_gesture |
WebKit::WebReferrerPolicyDefault, |
@@ -1315,8 +1332,8 @@ void ResourceDispatcherHostImpl::ResumeDeferredNavigation( |
} |
// The object died, so cancel and detach all requests associated with it except |
-// for downloads, which belong to the browser process even if initiated via a |
-// renderer. |
+// for downloads and detachable resources, which belong to the browser process |
+// even if initiated via a renderer. |
void ResourceDispatcherHostImpl::CancelRequestsForProcess(int child_id) { |
CancelRequestsForRoute(child_id, -1 /* cancel all */); |
registered_temp_files_.erase(child_id); |
@@ -1341,14 +1358,15 @@ void ResourceDispatcherHostImpl::CancelRequestsForRoute(int child_id, |
GlobalRequestID id(child_id, i->first.request_id); |
DCHECK(id == i->first); |
- |
- // Don't cancel navigations that are transferring to another process, |
- // since they belong to another process now. |
+ // Don't cancel navigations that are expected to live beyond this process. |
if (IsTransferredNavigation(id)) |
any_requests_transferring = true; |
- if (!info->is_download() && !info->is_stream() && |
- !IsTransferredNavigation(id) && |
- (route_id == -1 || route_id == info->GetRouteID())) { |
+ |
+ if (info->is_detachable()) { |
+ i->second->Detach(); |
+ } else if (!info->is_download() && !info->is_stream() && |
+ !IsTransferredNavigation(id) && |
+ (route_id == -1 || route_id == info->GetRouteID())) { |
matching_requests.push_back(id); |
} |
} |