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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 // This is the browser side of the resource dispatcher, it receives requests | 5 // This is the browser side of the resource dispatcher, it receives requests |
6 // from the child process (i.e. [Renderer, Plugin, Worker]ProcessHost), and | 6 // from the child process (i.e. [Renderer, Plugin, Worker]ProcessHost), and |
7 // dispatches them to URLRequests. It then forwards the messages from the | 7 // dispatches them to URLRequests. It then forwards the messages from the |
8 // URLRequests back to the correct process for handling. | 8 // URLRequests back to the correct process for handling. |
9 // | 9 // |
10 // See http://dev.chromium.org/developers/design-documents/multi-process-resourc
e-loading | 10 // See http://dev.chromium.org/developers/design-documents/multi-process-resourc
e-loading |
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28 #include "content/browser/renderer_host/resource_loader.h" | 28 #include "content/browser/renderer_host/resource_loader.h" |
29 #include "content/browser/renderer_host/resource_loader_delegate.h" | 29 #include "content/browser/renderer_host/resource_loader_delegate.h" |
30 #include "content/common/content_export.h" | 30 #include "content/common/content_export.h" |
31 #include "content/public/browser/child_process_data.h" | 31 #include "content/public/browser/child_process_data.h" |
32 #include "content/public/browser/notification_types.h" | 32 #include "content/public/browser/notification_types.h" |
33 #include "content/public/browser/resource_dispatcher_host.h" | 33 #include "content/public/browser/resource_dispatcher_host.h" |
34 #include "ipc/ipc_message.h" | 34 #include "ipc/ipc_message.h" |
35 #include "net/url_request/url_request.h" | 35 #include "net/url_request/url_request.h" |
36 #include "webkit/glue/resource_type.h" | 36 #include "webkit/glue/resource_type.h" |
37 | 37 |
38 class DownloadFileManager; | |
39 class ResourceHandler; | 38 class ResourceHandler; |
40 class SaveFileManager; | 39 class SaveFileManager; |
41 class WebContentsImpl; | 40 class WebContentsImpl; |
42 struct ResourceHostMsg_Request; | 41 struct ResourceHostMsg_Request; |
43 struct ViewMsg_SwapOut_Params; | 42 struct ViewMsg_SwapOut_Params; |
44 | 43 |
45 namespace net { | 44 namespace net { |
46 class CookieList; | 45 class CookieList; |
47 class URLRequestJobFactory; | 46 class URLRequestJobFactory; |
48 } | 47 } |
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139 | 138 |
140 // Intended for unit-tests only. Overrides the outstanding requests bound. | 139 // Intended for unit-tests only. Overrides the outstanding requests bound. |
141 void set_max_outstanding_requests_cost_per_process(int limit) { | 140 void set_max_outstanding_requests_cost_per_process(int limit) { |
142 max_outstanding_requests_cost_per_process_ = limit; | 141 max_outstanding_requests_cost_per_process_ = limit; |
143 } | 142 } |
144 | 143 |
145 // The average private bytes increase of the browser for each new pending | 144 // The average private bytes increase of the browser for each new pending |
146 // request. Experimentally obtained. | 145 // request. Experimentally obtained. |
147 static const int kAvgBytesPerOutstandingRequest = 4400; | 146 static const int kAvgBytesPerOutstandingRequest = 4400; |
148 | 147 |
149 DownloadFileManager* download_file_manager() const { | |
150 return download_file_manager_; | |
151 } | |
152 | |
153 SaveFileManager* save_file_manager() const { | 148 SaveFileManager* save_file_manager() const { |
154 return save_file_manager_; | 149 return save_file_manager_; |
155 } | 150 } |
156 | 151 |
157 // Called when the unload handler for a cross-site request has finished. | 152 // Called when the unload handler for a cross-site request has finished. |
158 void OnSwapOutACK(const ViewMsg_SwapOut_Params& params); | 153 void OnSwapOutACK(const ViewMsg_SwapOut_Params& params); |
159 | 154 |
160 // Called when the renderer loads a resource from its internal cache. | 155 // Called when the renderer loads a resource from its internal cache. |
161 void OnDidLoadResourceFromMemoryCache(const GURL& url, | 156 void OnDidLoadResourceFromMemoryCache(const GURL& url, |
162 const std::string& security_info, | 157 const std::string& security_info, |
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351 DeletableFilesMap; // key is request id | 346 DeletableFilesMap; // key is request id |
352 typedef std::map<int, DeletableFilesMap> | 347 typedef std::map<int, DeletableFilesMap> |
353 RegisteredTempFiles; // key is child process id | 348 RegisteredTempFiles; // key is child process id |
354 RegisteredTempFiles registered_temp_files_; | 349 RegisteredTempFiles registered_temp_files_; |
355 | 350 |
356 // A timer that periodically calls UpdateLoadStates while pending_requests_ | 351 // A timer that periodically calls UpdateLoadStates while pending_requests_ |
357 // is not empty. | 352 // is not empty. |
358 scoped_ptr<base::RepeatingTimer<ResourceDispatcherHostImpl> > | 353 scoped_ptr<base::RepeatingTimer<ResourceDispatcherHostImpl> > |
359 update_load_states_timer_; | 354 update_load_states_timer_; |
360 | 355 |
361 // We own the download file writing thread and manager | |
362 scoped_refptr<DownloadFileManager> download_file_manager_; | |
363 | |
364 // We own the save file manager. | 356 // We own the save file manager. |
365 scoped_refptr<SaveFileManager> save_file_manager_; | 357 scoped_refptr<SaveFileManager> save_file_manager_; |
366 | 358 |
367 // Request ID for browser initiated requests. request_ids generated by | 359 // Request ID for browser initiated requests. request_ids generated by |
368 // child processes are counted up from 0, while browser created requests | 360 // child processes are counted up from 0, while browser created requests |
369 // start at -2 and go down from there. (We need to start at -2 because -1 is | 361 // start at -2 and go down from there. (We need to start at -2 because -1 is |
370 // used as a special value all over the resource_dispatcher_host for | 362 // used as a special value all over the resource_dispatcher_host for |
371 // uninitialized variables.) This way, we no longer have the unlikely (but | 363 // uninitialized variables.) This way, we no longer have the unlikely (but |
372 // observed in the real world!) event where we have two requests with the same | 364 // observed in the real world!) event where we have two requests with the same |
373 // request_id_. | 365 // request_id_. |
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411 // http://crbug.com/90971 - Assists in tracking down use-after-frees on | 403 // http://crbug.com/90971 - Assists in tracking down use-after-frees on |
412 // shutdown. | 404 // shutdown. |
413 std::set<const ResourceContext*> active_resource_contexts_; | 405 std::set<const ResourceContext*> active_resource_contexts_; |
414 | 406 |
415 DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHostImpl); | 407 DISALLOW_COPY_AND_ASSIGN(ResourceDispatcherHostImpl); |
416 }; | 408 }; |
417 | 409 |
418 } // namespace content | 410 } // namespace content |
419 | 411 |
420 #endif // CONTENT_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_IMPL_H_ | 412 #endif // CONTENT_BROWSER_RENDERER_HOST_RESOURCE_DISPATCHER_HOST_IMPL_H_ |
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