1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
7 #include "content/child/resource_dispatcher.h"
9 #include "base/basictypes.h"
10 #include "base/bind.h"
11 #include "base/compiler_specific.h"
12 #include "base/debug/alias.h"
13 #include "base/files/file_path.h"
14 #include "base/memory/shared_memory.h"
15 #include "base/message_loop/message_loop.h"
16 #include "base/metrics/histogram.h"
17 #include "base/strings/string_util.h"
18 #include "content/child/request_extra_data.h"
19 #include "content/child/request_info.h"
20 #include "content/child/site_isolation_policy.h"
21 #include "content/child/sync_load_response.h"
22 #include "content/child/threaded_data_provider.h"
23 #include "content/common/inter_process_time_ticks_converter.h"
24 #include "content/common/resource_messages.h"
25 #include "content/public/child/request_peer.h"
26 #include "content/public/child/resource_dispatcher_delegate.h"
27 #include "content/public/common/resource_response.h"
28 #include "content/public/common/resource_type.h"
29 #include "net/base/net_errors.h"
30 #include "net/base/net_util.h"
31 #include "net/base/request_priority.h"
32 #include "net/http/http_response_headers.h"
33 #include "webkit/child/resource_loader_bridge.h"
35 using webkit_glue::ResourceLoaderBridge
;
41 // Converts |time| from a remote to local TimeTicks, overwriting the original
43 void RemoteToLocalTimeTicks(
44 const InterProcessTimeTicksConverter
& converter
,
45 base::TimeTicks
* time
) {
46 RemoteTimeTicks remote_time
= RemoteTimeTicks::FromTimeTicks(*time
);
47 *time
= converter
.ToLocalTimeTicks(remote_time
).ToTimeTicks();
50 void CrashOnMapFailure() {
52 DWORD last_err
= GetLastError();
53 base::debug::Alias(&last_err
);
58 // Each resource request is assigned an ID scoped to this process.
60 // NOTE: The resource_dispatcher_host also needs probably unique
61 // request_ids, so they count down from -2 (-1 is a special we're
62 // screwed value), while the renderer process counts up.
63 static int next_request_id
= 0;
64 return next_request_id
++;
69 // ResourceLoaderBridge implementation ----------------------------------------
71 class IPCResourceLoaderBridge
: public ResourceLoaderBridge
{
73 IPCResourceLoaderBridge(ResourceDispatcher
* dispatcher
,
74 const RequestInfo
& request_info
);
75 virtual ~IPCResourceLoaderBridge();
77 // ResourceLoaderBridge
78 virtual void SetRequestBody(ResourceRequestBody
* request_body
) OVERRIDE
;
79 virtual bool Start(RequestPeer
* peer
) OVERRIDE
;
80 virtual void Cancel() OVERRIDE
;
81 virtual void SetDefersLoading(bool value
) OVERRIDE
;
82 virtual void DidChangePriority(net::RequestPriority new_priority
,
83 int intra_priority_value
) OVERRIDE
;
84 virtual bool AttachThreadedDataReceiver(
85 blink::WebThreadedDataReceiver
* threaded_data_receiver
) OVERRIDE
;
86 virtual void SyncLoad(SyncLoadResponse
* response
) OVERRIDE
;
89 // The resource dispatcher for this loader. The bridge doesn't own it, but
90 // it's guaranteed to outlive the bridge.
91 ResourceDispatcher
* dispatcher_
;
93 // The request to send, created on initialization for modification and
95 ResourceHostMsg_Request request_
;
97 // ID for the request, valid once Start()ed, -1 if not valid yet.
100 // The routing id used when sending IPC messages.
103 // The security origin of the frame that initiates this request.
106 bool is_synchronous_request_
;
109 IPCResourceLoaderBridge::IPCResourceLoaderBridge(
110 ResourceDispatcher
* dispatcher
,
111 const RequestInfo
& request_info
)
112 : dispatcher_(dispatcher
),
114 routing_id_(request_info
.routing_id
),
115 is_synchronous_request_(false) {
116 DCHECK(dispatcher_
) << "no resource dispatcher";
117 request_
.method
= request_info
.method
;
118 request_
.url
= request_info
.url
;
119 request_
.first_party_for_cookies
= request_info
.first_party_for_cookies
;
120 request_
.referrer
= request_info
.referrer
;
121 request_
.referrer_policy
= request_info
.referrer_policy
;
122 request_
.headers
= request_info
.headers
;
123 request_
.load_flags
= request_info
.load_flags
;
124 request_
.origin_pid
= request_info
.requestor_pid
;
125 request_
.resource_type
= request_info
.request_type
;
126 request_
.priority
= request_info
.priority
;
127 request_
.request_context
= request_info
.request_context
;
128 request_
.appcache_host_id
= request_info
.appcache_host_id
;
129 request_
.download_to_file
= request_info
.download_to_file
;
130 request_
.has_user_gesture
= request_info
.has_user_gesture
;
131 request_
.enable_load_timing
= request_info
.enable_load_timing
;
133 const RequestExtraData kEmptyData
;
134 const RequestExtraData
* extra_data
;
135 if (request_info
.extra_data
)
136 extra_data
= static_cast<RequestExtraData
*>(request_info
.extra_data
);
138 extra_data
= &kEmptyData
;
139 request_
.visiblity_state
= extra_data
->visibility_state();
140 request_
.render_frame_id
= extra_data
->render_frame_id();
141 request_
.is_main_frame
= extra_data
->is_main_frame();
142 request_
.parent_is_main_frame
= extra_data
->parent_is_main_frame();
143 request_
.parent_render_frame_id
= extra_data
->parent_render_frame_id();
144 request_
.allow_download
= extra_data
->allow_download();
145 request_
.transition_type
= extra_data
->transition_type();
146 request_
.should_replace_current_entry
=
147 extra_data
->should_replace_current_entry();
148 request_
.transferred_request_child_id
=
149 extra_data
->transferred_request_child_id();
150 request_
.transferred_request_request_id
=
151 extra_data
->transferred_request_request_id();
152 request_
.service_worker_provider_id
=
153 extra_data
->service_worker_provider_id();
154 frame_origin_
= extra_data
->frame_origin();
157 IPCResourceLoaderBridge::~IPCResourceLoaderBridge() {
158 // we remove our hook for the resource dispatcher only when going away, since
159 // it doesn't keep track of whether we've force terminated the request
160 if (request_id_
>= 0) {
161 // this operation may fail, as the dispatcher will have preemptively
162 // removed us when the renderer sends the ReceivedAllData message.
163 dispatcher_
->RemovePendingRequest(request_id_
);
167 void IPCResourceLoaderBridge::SetRequestBody(
168 ResourceRequestBody
* request_body
) {
169 DCHECK(request_id_
== -1) << "request already started";
170 request_
.request_body
= request_body
;
173 // Writes a footer on the message and sends it
174 bool IPCResourceLoaderBridge::Start(RequestPeer
* peer
) {
175 if (request_id_
!= -1) {
176 NOTREACHED() << "Starting a request twice";
180 // generate the request ID, and append it to the message
181 request_id_
= dispatcher_
->AddPendingRequest(peer
,
182 request_
.resource_type
,
186 request_
.download_to_file
);
188 return dispatcher_
->message_sender()->Send(
189 new ResourceHostMsg_RequestResource(routing_id_
, request_id_
, request_
));
192 void IPCResourceLoaderBridge::Cancel() {
193 if (request_id_
< 0) {
194 NOTREACHED() << "Trying to cancel an unstarted request";
198 if (!is_synchronous_request_
) {
199 // This also removes the the request from the dispatcher.
200 dispatcher_
->CancelPendingRequest(request_id_
);
204 void IPCResourceLoaderBridge::SetDefersLoading(bool value
) {
205 if (request_id_
< 0) {
206 NOTREACHED() << "Trying to (un)defer an unstarted request";
210 dispatcher_
->SetDefersLoading(request_id_
, value
);
213 void IPCResourceLoaderBridge::DidChangePriority(
214 net::RequestPriority new_priority
,
215 int intra_priority_value
) {
216 if (request_id_
< 0) {
217 NOTREACHED() << "Trying to change priority of an unstarted request";
221 dispatcher_
->DidChangePriority(
222 request_id_
, new_priority
, intra_priority_value
);
225 bool IPCResourceLoaderBridge::AttachThreadedDataReceiver(
226 blink::WebThreadedDataReceiver
* threaded_data_receiver
) {
227 if (request_id_
< 0) {
228 NOTREACHED() << "Trying to attach threaded receiver on unstarted request";
232 return dispatcher_
->AttachThreadedDataReceiver(request_id_
,
233 threaded_data_receiver
);
236 void IPCResourceLoaderBridge::SyncLoad(SyncLoadResponse
* response
) {
237 if (request_id_
!= -1) {
238 NOTREACHED() << "Starting a request twice";
239 response
->error_code
= net::ERR_FAILED
;
243 request_id_
= MakeRequestID();
244 is_synchronous_request_
= true;
246 SyncLoadResult result
;
247 IPC::SyncMessage
* msg
= new ResourceHostMsg_SyncLoad(routing_id_
, request_id_
,
249 // NOTE: This may pump events (see RenderThread::Send).
250 if (!dispatcher_
->message_sender()->Send(msg
)) {
251 response
->error_code
= net::ERR_FAILED
;
255 response
->error_code
= result
.error_code
;
256 response
->url
= result
.final_url
;
257 response
->headers
= result
.headers
;
258 response
->mime_type
= result
.mime_type
;
259 response
->charset
= result
.charset
;
260 response
->request_time
= result
.request_time
;
261 response
->response_time
= result
.response_time
;
262 response
->encoded_data_length
= result
.encoded_data_length
;
263 response
->load_timing
= result
.load_timing
;
264 response
->devtools_info
= result
.devtools_info
;
265 response
->data
.swap(result
.data
);
266 response
->download_file_path
= result
.download_file_path
;
269 // ResourceDispatcher ---------------------------------------------------------
271 ResourceDispatcher::ResourceDispatcher(IPC::Sender
* sender
)
272 : message_sender_(sender
),
275 io_timestamp_(base::TimeTicks()) {
278 ResourceDispatcher::~ResourceDispatcher() {
281 // ResourceDispatcher implementation ------------------------------------------
283 bool ResourceDispatcher::OnMessageReceived(const IPC::Message
& message
) {
284 if (!IsResourceDispatcherMessage(message
)) {
290 PickleIterator
iter(message
);
291 if (!message
.ReadInt(&iter
, &request_id
)) {
292 NOTREACHED() << "malformed resource message";
296 PendingRequestInfo
* request_info
= GetPendingRequestInfo(request_id
);
298 // Release resources in the message if it is a data message.
299 ReleaseResourcesInDataMessage(message
);
303 if (request_info
->is_deferred
) {
304 request_info
->deferred_message_queue
.push_back(new IPC::Message(message
));
307 // Make sure any deferred messages are dispatched before we dispatch more.
308 if (!request_info
->deferred_message_queue
.empty()) {
309 FlushDeferredMessages(request_id
);
310 // The request could have been deferred now. If yes then the current
311 // message has to be queued up. The request_info instance should remain
312 // valid here as there are pending messages for it.
313 DCHECK(pending_requests_
.find(request_id
) != pending_requests_
.end());
314 if (request_info
->is_deferred
) {
315 request_info
->deferred_message_queue
.push_back(new IPC::Message(message
));
320 DispatchMessage(message
);
324 ResourceDispatcher::PendingRequestInfo
*
325 ResourceDispatcher::GetPendingRequestInfo(int request_id
) {
326 PendingRequestList::iterator it
= pending_requests_
.find(request_id
);
327 if (it
== pending_requests_
.end()) {
328 // This might happen for kill()ed requests on the webkit end.
331 return &(it
->second
);
334 void ResourceDispatcher::OnUploadProgress(int request_id
, int64 position
,
336 PendingRequestInfo
* request_info
= GetPendingRequestInfo(request_id
);
340 request_info
->peer
->OnUploadProgress(position
, size
);
342 // Acknowledge receipt
343 message_sender_
->Send(new ResourceHostMsg_UploadProgress_ACK(request_id
));
346 void ResourceDispatcher::OnReceivedResponse(
347 int request_id
, const ResourceResponseHead
& response_head
) {
348 TRACE_EVENT0("loader", "ResourceDispatcher::OnReceivedResponse");
349 PendingRequestInfo
* request_info
= GetPendingRequestInfo(request_id
);
352 request_info
->response_start
= ConsumeIOTimestamp();
355 RequestPeer
* new_peer
=
356 delegate_
->OnReceivedResponse(
357 request_info
->peer
, response_head
.mime_type
, request_info
->url
);
359 request_info
->peer
= new_peer
;
362 // Updates the response_url if the response was fetched by a ServiceWorker,
363 // and it was not generated inside the ServiceWorker.
364 if (response_head
.was_fetched_via_service_worker
&&
365 !response_head
.original_url_via_service_worker
.is_empty()) {
366 request_info
->response_url
= response_head
.original_url_via_service_worker
;
369 ResourceResponseInfo renderer_response_info
;
370 ToResourceResponseInfo(*request_info
, response_head
, &renderer_response_info
);
371 request_info
->site_isolation_metadata
=
372 SiteIsolationPolicy::OnReceivedResponse(request_info
->frame_origin
,
373 request_info
->response_url
,
374 request_info
->resource_type
,
375 request_info
->origin_pid
,
376 renderer_response_info
);
377 request_info
->peer
->OnReceivedResponse(renderer_response_info
);
380 void ResourceDispatcher::OnReceivedCachedMetadata(
381 int request_id
, const std::vector
<char>& data
) {
382 PendingRequestInfo
* request_info
= GetPendingRequestInfo(request_id
);
387 request_info
->peer
->OnReceivedCachedMetadata(&data
.front(), data
.size());
390 void ResourceDispatcher::OnSetDataBuffer(int request_id
,
391 base::SharedMemoryHandle shm_handle
,
393 base::ProcessId renderer_pid
) {
394 TRACE_EVENT0("loader", "ResourceDispatcher::OnSetDataBuffer");
395 PendingRequestInfo
* request_info
= GetPendingRequestInfo(request_id
);
399 bool shm_valid
= base::SharedMemory::IsHandleValid(shm_handle
);
400 CHECK((shm_valid
&& shm_size
> 0) || (!shm_valid
&& !shm_size
));
402 request_info
->buffer
.reset(
403 new base::SharedMemory(shm_handle
, true)); // read only
405 bool ok
= request_info
->buffer
->Map(shm_size
);
407 // Added to help debug crbug/160401.
408 base::ProcessId renderer_pid_copy
= renderer_pid
;
409 base::debug::Alias(&renderer_pid_copy
);
411 base::SharedMemoryHandle shm_handle_copy
= shm_handle
;
412 base::debug::Alias(&shm_handle_copy
);
418 request_info
->buffer_size
= shm_size
;
421 void ResourceDispatcher::OnReceivedData(int request_id
,
424 int encoded_data_length
) {
425 TRACE_EVENT0("loader", "ResourceDispatcher::OnReceivedData");
426 DCHECK_GT(data_length
, 0);
427 PendingRequestInfo
* request_info
= GetPendingRequestInfo(request_id
);
428 bool send_ack
= true;
429 if (request_info
&& data_length
> 0) {
430 CHECK(base::SharedMemory::IsHandleValid(request_info
->buffer
->handle()));
431 CHECK_GE(request_info
->buffer_size
, data_offset
+ data_length
);
433 // Ensure that the SHM buffer remains valid for the duration of this scope.
434 // It is possible for CancelPendingRequest() to be called before we exit
436 linked_ptr
<base::SharedMemory
> retain_buffer(request_info
->buffer
);
438 base::TimeTicks time_start
= base::TimeTicks::Now();
440 const char* data_start
= static_cast<char*>(request_info
->buffer
->memory());
442 CHECK(data_start
+ data_offset
);
443 const char* data_ptr
= data_start
+ data_offset
;
445 // Check whether this response data is compliant with our cross-site
446 // document blocking policy. We only do this for the first packet.
447 std::string alternative_data
;
448 if (request_info
->site_isolation_metadata
.get()) {
449 request_info
->blocked_response
=
450 SiteIsolationPolicy::ShouldBlockResponse(
451 request_info
->site_isolation_metadata
, data_ptr
, data_length
,
453 request_info
->site_isolation_metadata
.reset();
455 // When the response is blocked we may have any alternative data to
456 // send to the renderer. When |alternative_data| is zero-sized, we do not
457 // call peer's callback.
458 if (request_info
->blocked_response
&& !alternative_data
.empty()) {
459 data_ptr
= alternative_data
.data();
460 data_length
= alternative_data
.size();
461 encoded_data_length
= alternative_data
.size();
465 if (!request_info
->blocked_response
|| !alternative_data
.empty()) {
466 if (request_info
->threaded_data_provider
) {
467 request_info
->threaded_data_provider
->OnReceivedDataOnForegroundThread(
468 data_ptr
, data_length
, encoded_data_length
);
469 // A threaded data provider will take care of its own ACKing, as the
470 // data may be processed later on another thread.
473 request_info
->peer
->OnReceivedData(
474 data_ptr
, data_length
, encoded_data_length
);
478 UMA_HISTOGRAM_TIMES("ResourceDispatcher.OnReceivedDataTime",
479 base::TimeTicks::Now() - time_start
);
482 // Acknowledge the reception of this data.
484 message_sender_
->Send(new ResourceHostMsg_DataReceived_ACK(request_id
));
487 void ResourceDispatcher::OnDownloadedData(int request_id
,
489 int encoded_data_length
) {
490 // Acknowledge the reception of this message.
491 message_sender_
->Send(new ResourceHostMsg_DataDownloaded_ACK(request_id
));
493 PendingRequestInfo
* request_info
= GetPendingRequestInfo(request_id
);
497 request_info
->peer
->OnDownloadedData(data_len
, encoded_data_length
);
500 void ResourceDispatcher::OnReceivedRedirect(
502 const net::RedirectInfo
& redirect_info
,
503 const ResourceResponseHead
& response_head
) {
504 TRACE_EVENT0("loader", "ResourceDispatcher::OnReceivedRedirect");
505 PendingRequestInfo
* request_info
= GetPendingRequestInfo(request_id
);
508 request_info
->response_start
= ConsumeIOTimestamp();
510 ResourceResponseInfo renderer_response_info
;
511 ToResourceResponseInfo(*request_info
, response_head
, &renderer_response_info
);
512 if (request_info
->peer
->OnReceivedRedirect(redirect_info
,
513 renderer_response_info
)) {
514 // Double-check if the request is still around. The call above could
515 // potentially remove it.
516 request_info
= GetPendingRequestInfo(request_id
);
519 // We update the response_url here so that we can send it to
520 // SiteIsolationPolicy later when OnReceivedResponse is called.
521 request_info
->response_url
= redirect_info
.new_url
;
522 request_info
->pending_redirect_message
.reset(
523 new ResourceHostMsg_FollowRedirect(request_id
));
524 if (!request_info
->is_deferred
) {
525 FollowPendingRedirect(request_id
, *request_info
);
528 CancelPendingRequest(request_id
);
532 void ResourceDispatcher::FollowPendingRedirect(
534 PendingRequestInfo
& request_info
) {
535 IPC::Message
* msg
= request_info
.pending_redirect_message
.release();
537 message_sender_
->Send(msg
);
540 void ResourceDispatcher::OnRequestComplete(
542 const ResourceMsg_RequestCompleteData
& request_complete_data
) {
543 TRACE_EVENT0("loader", "ResourceDispatcher::OnRequestComplete");
545 PendingRequestInfo
* request_info
= GetPendingRequestInfo(request_id
);
548 request_info
->completion_time
= ConsumeIOTimestamp();
549 request_info
->buffer
.reset();
550 request_info
->buffer_size
= 0;
552 RequestPeer
* peer
= request_info
->peer
;
555 RequestPeer
* new_peer
=
556 delegate_
->OnRequestComplete(
557 request_info
->peer
, request_info
->resource_type
,
558 request_complete_data
.error_code
);
560 request_info
->peer
= new_peer
;
563 base::TimeTicks renderer_completion_time
= ToRendererCompletionTime(
564 *request_info
, request_complete_data
.completion_time
);
565 // The request ID will be removed from our pending list in the destructor.
566 // Normally, dispatching this message causes the reference-counted request to
568 peer
->OnCompletedRequest(request_complete_data
.error_code
,
569 request_complete_data
.was_ignored_by_handler
,
570 request_complete_data
.exists_in_cache
,
571 request_complete_data
.security_info
,
572 renderer_completion_time
,
573 request_complete_data
.encoded_data_length
);
576 int ResourceDispatcher::AddPendingRequest(RequestPeer
* callback
,
577 ResourceType resource_type
,
579 const GURL
& frame_origin
,
580 const GURL
& request_url
,
581 bool download_to_file
) {
582 // Compute a unique request_id for this renderer process.
583 int id
= MakeRequestID();
584 pending_requests_
[id
] = PendingRequestInfo(callback
,
593 bool ResourceDispatcher::RemovePendingRequest(int request_id
) {
594 PendingRequestList::iterator it
= pending_requests_
.find(request_id
);
595 if (it
== pending_requests_
.end())
598 PendingRequestInfo
& request_info
= it
->second
;
600 bool release_downloaded_file
= request_info
.download_to_file
;
602 ReleaseResourcesInMessageQueue(&request_info
.deferred_message_queue
);
603 pending_requests_
.erase(it
);
605 if (release_downloaded_file
) {
606 message_sender_
->Send(
607 new ResourceHostMsg_ReleaseDownloadedFile(request_id
));
613 void ResourceDispatcher::CancelPendingRequest(int request_id
) {
614 PendingRequestList::iterator it
= pending_requests_
.find(request_id
);
615 if (it
== pending_requests_
.end()) {
616 DVLOG(1) << "unknown request";
620 // Cancel the request, and clean it up so the bridge will receive no more
622 message_sender_
->Send(new ResourceHostMsg_CancelRequest(request_id
));
623 RemovePendingRequest(request_id
);
626 void ResourceDispatcher::SetDefersLoading(int request_id
, bool value
) {
627 PendingRequestList::iterator it
= pending_requests_
.find(request_id
);
628 if (it
== pending_requests_
.end()) {
629 DLOG(ERROR
) << "unknown request";
632 PendingRequestInfo
& request_info
= it
->second
;
634 request_info
.is_deferred
= value
;
635 } else if (request_info
.is_deferred
) {
636 request_info
.is_deferred
= false;
638 FollowPendingRedirect(request_id
, request_info
);
640 base::MessageLoop::current()->PostTask(
642 base::Bind(&ResourceDispatcher::FlushDeferredMessages
,
643 weak_factory_
.GetWeakPtr(),
648 void ResourceDispatcher::DidChangePriority(int request_id
,
649 net::RequestPriority new_priority
,
650 int intra_priority_value
) {
651 DCHECK(ContainsKey(pending_requests_
, request_id
));
652 message_sender_
->Send(new ResourceHostMsg_DidChangePriority(
653 request_id
, new_priority
, intra_priority_value
));
656 bool ResourceDispatcher::AttachThreadedDataReceiver(
657 int request_id
, blink::WebThreadedDataReceiver
* threaded_data_receiver
) {
658 PendingRequestInfo
* request_info
= GetPendingRequestInfo(request_id
);
659 DCHECK(request_info
);
661 if (request_info
->buffer
!= NULL
) {
662 DCHECK(!request_info
->threaded_data_provider
);
663 request_info
->threaded_data_provider
= new ThreadedDataProvider(
664 request_id
, threaded_data_receiver
, request_info
->buffer
,
665 request_info
->buffer_size
);
672 ResourceDispatcher::PendingRequestInfo::PendingRequestInfo()
674 threaded_data_provider(NULL
),
675 resource_type(RESOURCE_TYPE_SUB_RESOURCE
),
677 download_to_file(false),
678 blocked_response(false),
682 ResourceDispatcher::PendingRequestInfo::PendingRequestInfo(
684 ResourceType resource_type
,
686 const GURL
& frame_origin
,
687 const GURL
& request_url
,
688 bool download_to_file
)
690 threaded_data_provider(NULL
),
691 resource_type(resource_type
),
692 origin_pid(origin_pid
),
695 frame_origin(frame_origin
),
696 response_url(request_url
),
697 download_to_file(download_to_file
),
698 request_start(base::TimeTicks::Now()),
699 blocked_response(false) {}
701 ResourceDispatcher::PendingRequestInfo::~PendingRequestInfo() {
702 if (threaded_data_provider
)
703 threaded_data_provider
->Stop();
706 void ResourceDispatcher::DispatchMessage(const IPC::Message
& message
) {
707 IPC_BEGIN_MESSAGE_MAP(ResourceDispatcher
, message
)
708 IPC_MESSAGE_HANDLER(ResourceMsg_UploadProgress
, OnUploadProgress
)
709 IPC_MESSAGE_HANDLER(ResourceMsg_ReceivedResponse
, OnReceivedResponse
)
710 IPC_MESSAGE_HANDLER(ResourceMsg_ReceivedCachedMetadata
,
711 OnReceivedCachedMetadata
)
712 IPC_MESSAGE_HANDLER(ResourceMsg_ReceivedRedirect
, OnReceivedRedirect
)
713 IPC_MESSAGE_HANDLER(ResourceMsg_SetDataBuffer
, OnSetDataBuffer
)
714 IPC_MESSAGE_HANDLER(ResourceMsg_DataReceived
, OnReceivedData
)
715 IPC_MESSAGE_HANDLER(ResourceMsg_DataDownloaded
, OnDownloadedData
)
716 IPC_MESSAGE_HANDLER(ResourceMsg_RequestComplete
, OnRequestComplete
)
717 IPC_END_MESSAGE_MAP()
720 void ResourceDispatcher::FlushDeferredMessages(int request_id
) {
721 PendingRequestList::iterator it
= pending_requests_
.find(request_id
);
722 if (it
== pending_requests_
.end()) // The request could have become invalid.
724 PendingRequestInfo
& request_info
= it
->second
;
725 if (request_info
.is_deferred
)
727 // Because message handlers could result in request_info being destroyed,
728 // we need to work with a stack reference to the deferred queue.
730 q
.swap(request_info
.deferred_message_queue
);
732 IPC::Message
* m
= q
.front();
736 // If this request is deferred in the context of the above message, then
737 // we should honor the same and stop dispatching further messages.
738 // We need to find the request again in the list as it may have completed
739 // by now and the request_info instance above may be invalid.
740 PendingRequestList::iterator index
= pending_requests_
.find(request_id
);
741 if (index
!= pending_requests_
.end()) {
742 PendingRequestInfo
& pending_request
= index
->second
;
743 if (pending_request
.is_deferred
) {
744 pending_request
.deferred_message_queue
.swap(q
);
751 ResourceLoaderBridge
* ResourceDispatcher::CreateBridge(
752 const RequestInfo
& request_info
) {
753 return new IPCResourceLoaderBridge(this, request_info
);
756 void ResourceDispatcher::ToResourceResponseInfo(
757 const PendingRequestInfo
& request_info
,
758 const ResourceResponseHead
& browser_info
,
759 ResourceResponseInfo
* renderer_info
) const {
760 *renderer_info
= browser_info
;
761 if (request_info
.request_start
.is_null() ||
762 request_info
.response_start
.is_null() ||
763 browser_info
.request_start
.is_null() ||
764 browser_info
.response_start
.is_null() ||
765 browser_info
.load_timing
.request_start
.is_null()) {
768 InterProcessTimeTicksConverter
converter(
769 LocalTimeTicks::FromTimeTicks(request_info
.request_start
),
770 LocalTimeTicks::FromTimeTicks(request_info
.response_start
),
771 RemoteTimeTicks::FromTimeTicks(browser_info
.request_start
),
772 RemoteTimeTicks::FromTimeTicks(browser_info
.response_start
));
774 net::LoadTimingInfo
* load_timing
= &renderer_info
->load_timing
;
775 RemoteToLocalTimeTicks(converter
, &load_timing
->request_start
);
776 RemoteToLocalTimeTicks(converter
, &load_timing
->proxy_resolve_start
);
777 RemoteToLocalTimeTicks(converter
, &load_timing
->proxy_resolve_end
);
778 RemoteToLocalTimeTicks(converter
, &load_timing
->connect_timing
.dns_start
);
779 RemoteToLocalTimeTicks(converter
, &load_timing
->connect_timing
.dns_end
);
780 RemoteToLocalTimeTicks(converter
, &load_timing
->connect_timing
.connect_start
);
781 RemoteToLocalTimeTicks(converter
, &load_timing
->connect_timing
.connect_end
);
782 RemoteToLocalTimeTicks(converter
, &load_timing
->connect_timing
.ssl_start
);
783 RemoteToLocalTimeTicks(converter
, &load_timing
->connect_timing
.ssl_end
);
784 RemoteToLocalTimeTicks(converter
, &load_timing
->send_start
);
785 RemoteToLocalTimeTicks(converter
, &load_timing
->send_end
);
786 RemoteToLocalTimeTicks(converter
, &load_timing
->receive_headers_end
);
788 // Collect UMA on the inter-process skew.
789 bool is_skew_additive
= false;
790 if (converter
.IsSkewAdditiveForMetrics()) {
791 is_skew_additive
= true;
792 base::TimeDelta skew
= converter
.GetSkewForMetrics();
793 if (skew
>= base::TimeDelta()) {
795 "InterProcessTimeTicks.BrowserAhead_BrowserToRenderer", skew
);
798 "InterProcessTimeTicks.BrowserBehind_BrowserToRenderer", -skew
);
801 UMA_HISTOGRAM_BOOLEAN(
802 "InterProcessTimeTicks.IsSkewAdditive_BrowserToRenderer",
806 base::TimeTicks
ResourceDispatcher::ToRendererCompletionTime(
807 const PendingRequestInfo
& request_info
,
808 const base::TimeTicks
& browser_completion_time
) const {
809 if (request_info
.completion_time
.is_null()) {
810 return browser_completion_time
;
813 // TODO(simonjam): The optimal lower bound should be the most recent value of
814 // TimeTicks::Now() returned to WebKit. Is it worth trying to cache that?
815 // Until then, |response_start| is used as it is the most recent value
816 // returned for this request.
817 int64 result
= std::max(browser_completion_time
.ToInternalValue(),
818 request_info
.response_start
.ToInternalValue());
819 result
= std::min(result
, request_info
.completion_time
.ToInternalValue());
820 return base::TimeTicks::FromInternalValue(result
);
823 base::TimeTicks
ResourceDispatcher::ConsumeIOTimestamp() {
824 if (io_timestamp_
== base::TimeTicks())
825 return base::TimeTicks::Now();
826 base::TimeTicks result
= io_timestamp_
;
827 io_timestamp_
= base::TimeTicks();
832 bool ResourceDispatcher::IsResourceDispatcherMessage(
833 const IPC::Message
& message
) {
834 switch (message
.type()) {
835 case ResourceMsg_UploadProgress::ID
:
836 case ResourceMsg_ReceivedResponse::ID
:
837 case ResourceMsg_ReceivedCachedMetadata::ID
:
838 case ResourceMsg_ReceivedRedirect::ID
:
839 case ResourceMsg_SetDataBuffer::ID
:
840 case ResourceMsg_DataReceived::ID
:
841 case ResourceMsg_DataDownloaded::ID
:
842 case ResourceMsg_RequestComplete::ID
:
853 void ResourceDispatcher::ReleaseResourcesInDataMessage(
854 const IPC::Message
& message
) {
855 PickleIterator
iter(message
);
857 if (!message
.ReadInt(&iter
, &request_id
)) {
858 NOTREACHED() << "malformed resource message";
862 // If the message contains a shared memory handle, we should close the handle
863 // or there will be a memory leak.
864 if (message
.type() == ResourceMsg_SetDataBuffer::ID
) {
865 base::SharedMemoryHandle shm_handle
;
866 if (IPC::ParamTraits
<base::SharedMemoryHandle
>::Read(&message
,
869 if (base::SharedMemory::IsHandleValid(shm_handle
))
870 base::SharedMemory::CloseHandle(shm_handle
);
876 void ResourceDispatcher::ReleaseResourcesInMessageQueue(MessageQueue
* queue
) {
877 while (!queue
->empty()) {
878 IPC::Message
* message
= queue
->front();
879 ReleaseResourcesInDataMessage(*message
);
885 } // namespace content