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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "content/browser/loader/resource_scheduler.h" | 5 #include "content/browser/loader/resource_scheduler.h" |
| 6 | 6 |
| 7 #include "base/stl_util.h" | 7 #include "base/stl_util.h" |
| 8 #include "content/common/resource_messages.h" | 8 #include "content/common/resource_messages.h" |
| 9 #include "content/browser/loader/resource_message_delegate.h" | 9 #include "content/browser/loader/resource_message_delegate.h" |
| 10 #include "content/public/browser/resource_controller.h" | 10 #include "content/public/browser/resource_controller.h" |
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| 266 } | 266 } |
| 267 | 267 |
| 268 void ResourceScheduler::StartRequest(ScheduledResourceRequest* request, | 268 void ResourceScheduler::StartRequest(ScheduledResourceRequest* request, |
| 269 Client* client) { | 269 Client* client) { |
| 270 client->in_flight_requests.insert(request); | 270 client->in_flight_requests.insert(request); |
| 271 request->Start(); | 271 request->Start(); |
| 272 } | 272 } |
| 273 | 273 |
| 274 void ResourceScheduler::ReprioritizeRequest(ScheduledResourceRequest* request, | 274 void ResourceScheduler::ReprioritizeRequest(ScheduledResourceRequest* request, |
| 275 net::RequestPriority new_priority) { | 275 net::RequestPriority new_priority) { |
| 276 if (request->url_request()->load_flags() & net::LOAD_IGNORE_LIMITS) { | |
| 277 // We should not be re-prioritizing requests with the | |
| 278 // IGNORE_LIMITS flag. | |
| 279 NOTREACHED(); | |
| 280 return; | |
| 281 } | |
| 282 net::RequestPriority old_priority = request->url_request()->priority(); | 276 net::RequestPriority old_priority = request->url_request()->priority(); |
| 283 DCHECK_NE(new_priority, old_priority); | 277 DCHECK_NE(new_priority, old_priority); |
| 284 request->url_request()->SetPriority(new_priority); | 278 request->url_request()->SetPriority(new_priority); |
| 285 ClientMap::iterator client_it = client_map_.find(request->client_id()); | 279 ClientMap::iterator client_it = client_map_.find(request->client_id()); |
| 286 if (client_it == client_map_.end()) { | 280 if (client_it == client_map_.end()) { |
| 287 // The client was likely deleted shortly before we received this IPC. | 281 // The client was likely deleted shortly before we received this IPC. |
| 288 return; | 282 return; |
| 289 } | 283 } |
| 290 | 284 |
| 291 Client *client = client_it->second; | 285 Client *client = client_it->second; |
| 292 if (!client->pending_requests.IsQueued(request)) { | 286 if (!client->pending_requests.IsQueued(request)) { |
| 293 DCHECK(ContainsKey(client->in_flight_requests, request)); | 287 DCHECK(ContainsKey(client->in_flight_requests, request)); |
| 294 // Request has already started. | 288 // Request has already started. |
| 295 return; | 289 return; |
| 296 } | 290 } |
| 297 | 291 |
| 298 client->pending_requests.Erase(request); | 292 client->pending_requests.Erase(request); |
| 299 client->pending_requests.Insert(request, | 293 client->pending_requests.Insert(request, request->url_request()->priority()); |
| 300 request->url_request()->priority()); | |
| 301 | 294 |
| 302 if (new_priority > old_priority) { | 295 if (new_priority > old_priority) { |
| 303 // Check if this request is now able to load at its new priority. | 296 // Check if this request is now able to load at its new priority. |
| 304 LoadAnyStartablePendingRequests(client); | 297 LoadAnyStartablePendingRequests(client); |
| 305 } | 298 } |
| 306 } | 299 } |
| 307 | 300 |
| 308 void ResourceScheduler::LoadAnyStartablePendingRequests(Client* client) { | 301 void ResourceScheduler::LoadAnyStartablePendingRequests(Client* client) { |
| 309 while (!client->pending_requests.IsEmpty()) { | 302 while (!client->pending_requests.IsEmpty()) { |
| 310 ScheduledResourceRequest* request = client->pending_requests.FirstMax(); | 303 ScheduledResourceRequest* request = client->pending_requests.FirstMax(); |
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| 392 | 385 |
| 393 return true; | 386 return true; |
| 394 } | 387 } |
| 395 | 388 |
| 396 ResourceScheduler::ClientId ResourceScheduler::MakeClientId( | 389 ResourceScheduler::ClientId ResourceScheduler::MakeClientId( |
| 397 int child_id, int route_id) { | 390 int child_id, int route_id) { |
| 398 return (static_cast<ResourceScheduler::ClientId>(child_id) << 32) | route_id; | 391 return (static_cast<ResourceScheduler::ClientId>(child_id) << 32) | route_id; |
| 399 } | 392 } |
| 400 | 393 |
| 401 } // namespace content | 394 } // namespace content |
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