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Side by Side Diff: content/browser/renderer_host/resource_queue.h

Issue 7800015: prune down content_dll change to just the CONTENT_EXPORTS (Closed)
Patch Set: update copyright headers, merge Created 9 years, 3 months ago
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1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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 #ifndef CONTENT_BROWSER_RENDERER_HOST_RESOURCE_QUEUE_H_ 5 #ifndef CONTENT_BROWSER_RENDERER_HOST_RESOURCE_QUEUE_H_
6 #define CONTENT_BROWSER_RENDERER_HOST_RESOURCE_QUEUE_H_ 6 #define CONTENT_BROWSER_RENDERER_HOST_RESOURCE_QUEUE_H_
7 #pragma once 7 #pragma once
8 8
9 #include <map> 9 #include <map>
10 #include <set> 10 #include <set>
11 11
12 #include "base/basictypes.h" 12 #include "base/basictypes.h"
13 #include "content/common/content_export.h"
13 14
14 namespace net { 15 namespace net {
15 class URLRequest; 16 class URLRequest;
16 } // namespace net 17 } // namespace net
17 18
18 class ResourceDispatcherHostRequestInfo; 19 class ResourceDispatcherHostRequestInfo;
19 class ResourceQueue; 20 class ResourceQueue;
20 struct GlobalRequestID; 21 struct GlobalRequestID;
21 22
22 // Makes decisions about delaying or not each net::URLRequest in the queue. 23 // Makes decisions about delaying or not each net::URLRequest in the queue.
23 // All methods are called on the IO thread. 24 // All methods are called on the IO thread.
24 class ResourceQueueDelegate { 25 class ResourceQueueDelegate {
25 public: 26 public:
26 // Gives the delegate a pointer to the queue object. 27 // Gives the delegate a pointer to the queue object.
27 virtual void Initialize(ResourceQueue* resource_queue) = 0; 28 virtual void Initialize(ResourceQueue* resource_queue) = 0;
28 29
29 // Should return true if it wants the |request| to not be started at this 30 // Should return true if it wants the |request| to not be started at this
30 // point. To start the delayed request, ResourceQueue::StartDelayedRequest 31 // point. To start the delayed request, ResourceQueue::StartDelayedRequest
31 // should be used. 32 // should be used.
32 virtual bool ShouldDelayRequest( 33 virtual bool ShouldDelayRequest(
33 net::URLRequest* request, 34 net::URLRequest* request,
34 const ResourceDispatcherHostRequestInfo& request_info, 35 const ResourceDispatcherHostRequestInfo& request_info,
35 const GlobalRequestID& request_id) = 0; 36 const GlobalRequestID& request_id) = 0;
36 37
37 // Called just before ResourceQueue shutdown. After that, the delegate 38 // Called just before ResourceQueue shutdown. After that, the delegate
38 // should not use the ResourceQueue. 39 // should not use the ResourceQueue.
39 virtual void WillShutdownResourceQueue() = 0; 40 virtual void WillShutdownResourceQueue() = 0;
40 41
41 protected: 42 protected:
42 virtual ~ResourceQueueDelegate(); 43 CONTENT_EXPORT virtual ~ResourceQueueDelegate();
43 }; 44 };
44 45
45 // Makes it easy to delay starting URL requests until specified conditions are 46 // Makes it easy to delay starting URL requests until specified conditions are
46 // met. 47 // met.
47 class ResourceQueue { 48 class ResourceQueue {
48 public: 49 public:
49 typedef std::set<ResourceQueueDelegate*> DelegateSet; 50 typedef std::set<ResourceQueueDelegate*> DelegateSet;
50 51
51 // UI THREAD ONLY ------------------------------------------------------------ 52 // UI THREAD ONLY ------------------------------------------------------------
52 53
(...skipping 16 matching lines...) Expand all
69 void AddRequest(net::URLRequest* request, 70 void AddRequest(net::URLRequest* request,
70 const ResourceDispatcherHostRequestInfo& request_info); 71 const ResourceDispatcherHostRequestInfo& request_info);
71 72
72 // Tells the queue that the net::URLRequest object associated with 73 // Tells the queue that the net::URLRequest object associated with
73 // |request_id| is no longer valid. 74 // |request_id| is no longer valid.
74 void RemoveRequest(const GlobalRequestID& request_id); 75 void RemoveRequest(const GlobalRequestID& request_id);
75 76
76 // A delegate should call StartDelayedRequest when it wants to allow the 77 // A delegate should call StartDelayedRequest when it wants to allow the
77 // request to start. If it was the last delegate that demanded the request 78 // request to start. If it was the last delegate that demanded the request
78 // to be delayed, the request will be started. 79 // to be delayed, the request will be started.
79 void StartDelayedRequest(ResourceQueueDelegate* delegate, 80 CONTENT_EXPORT void StartDelayedRequest(ResourceQueueDelegate* delegate,
80 const GlobalRequestID& request_id); 81 const GlobalRequestID& request_id);
81 82
82 private: 83 private:
83 typedef std::map<GlobalRequestID, net::URLRequest*> RequestMap; 84 typedef std::map<GlobalRequestID, net::URLRequest*> RequestMap;
84 typedef std::map<GlobalRequestID, DelegateSet> InterestedDelegatesMap; 85 typedef std::map<GlobalRequestID, DelegateSet> InterestedDelegatesMap;
85 86
86 // The registered delegates. Will not change after the queue has been 87 // The registered delegates. Will not change after the queue has been
87 // initialized. 88 // initialized.
88 DelegateSet delegates_; 89 DelegateSet delegates_;
89 90
90 // Stores net::URLRequest objects associated with each GlobalRequestID. This 91 // Stores net::URLRequest objects associated with each GlobalRequestID. This
91 // helps decoupling the queue from ResourceDispatcherHost. 92 // helps decoupling the queue from ResourceDispatcherHost.
92 RequestMap requests_; 93 RequestMap requests_;
93 94
94 // Maps a GlobalRequestID to the set of delegates that want to prevent the 95 // Maps a GlobalRequestID to the set of delegates that want to prevent the
95 // associated request from starting yet. 96 // associated request from starting yet.
96 InterestedDelegatesMap interested_delegates_; 97 InterestedDelegatesMap interested_delegates_;
97 98
98 // True when we are shutting down. 99 // True when we are shutting down.
99 bool shutdown_; 100 bool shutdown_;
100 101
101 DISALLOW_COPY_AND_ASSIGN(ResourceQueue); 102 DISALLOW_COPY_AND_ASSIGN(ResourceQueue);
102 }; 103 };
103 104
104 #endif // CONTENT_BROWSER_RENDERER_HOST_RESOURCE_QUEUE_H_ 105 #endif // CONTENT_BROWSER_RENDERER_HOST_RESOURCE_QUEUE_H_
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