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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 #ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_ | 5 #ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_ |
6 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_ | 6 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/callback.h" | 10 #include "base/callback.h" |
11 #include "base/memory/scoped_ptr.h" | 11 #include "base/memory/scoped_ptr.h" |
| 12 #include "content/browser/download/download_request_core.h" |
12 #include "content/browser/loader/resource_handler.h" | 13 #include "content/browser/loader/resource_handler.h" |
13 #include "content/public/browser/download_interrupt_reasons.h" | 14 #include "content/public/browser/download_interrupt_reasons.h" |
14 #include "content/public/browser/download_manager.h" | 15 #include "content/public/browser/download_manager.h" |
15 #include "content/public/browser/download_save_info.h" | 16 #include "content/public/browser/download_save_info.h" |
16 #include "content/public/browser/download_url_parameters.h" | 17 #include "content/public/browser/download_url_parameters.h" |
17 | 18 |
18 namespace net { | 19 namespace net { |
19 class URLRequest; | 20 class URLRequest; |
20 } // namespace net | 21 } // namespace net |
21 | 22 |
22 namespace content { | 23 namespace content { |
23 class ByteStreamReader; | 24 class ByteStreamReader; |
24 class ByteStreamWriter; | 25 class ByteStreamWriter; |
25 class DownloadRequestHandle; | 26 class DownloadRequestHandle; |
26 class PowerSaveBlocker; | 27 class PowerSaveBlocker; |
27 struct DownloadCreateInfo; | 28 struct DownloadCreateInfo; |
28 | 29 |
29 // Forwards data to the download thread. | 30 // Forwards data to the download thread. |
30 class CONTENT_EXPORT DownloadResourceHandler | 31 class CONTENT_EXPORT DownloadResourceHandler |
31 : public ResourceHandler, | 32 : public ResourceHandler, |
32 public base::SupportsWeakPtr<DownloadResourceHandler> { | 33 public base::SupportsWeakPtr<DownloadResourceHandler> { |
33 public: | 34 public: |
34 struct DownloadTabInfo; | 35 struct DownloadTabInfo; |
35 | 36 |
36 // Size of the buffer used between the DownloadResourceHandler and the | |
37 // downstream receiver of its output. | |
38 static const int kDownloadByteStreamSize; | |
39 | |
40 // started_cb will be called exactly once on the UI thread. | 37 // started_cb will be called exactly once on the UI thread. |
41 // |id| should be invalid if the id should be automatically assigned. | 38 // |id| should be invalid if the id should be automatically assigned. |
42 DownloadResourceHandler( | 39 DownloadResourceHandler( |
43 uint32 id, | 40 uint32 id, |
44 net::URLRequest* request, | 41 net::URLRequest* request, |
45 const DownloadUrlParameters::OnStartedCallback& started_cb, | 42 const DownloadUrlParameters::OnStartedCallback& started_cb, |
46 scoped_ptr<DownloadSaveInfo> save_info); | 43 scoped_ptr<DownloadSaveInfo> save_info); |
47 | 44 |
48 bool OnRequestRedirected(const net::RedirectInfo& redirect_info, | 45 bool OnRequestRedirected(const net::RedirectInfo& redirect_info, |
49 ResourceResponse* response, | 46 ResourceResponse* response, |
(...skipping 30 matching lines...) Expand all Loading... |
80 void CancelRequest(); | 77 void CancelRequest(); |
81 | 78 |
82 std::string DebugString() const; | 79 std::string DebugString() const; |
83 | 80 |
84 private: | 81 private: |
85 ~DownloadResourceHandler() override; | 82 ~DownloadResourceHandler() override; |
86 | 83 |
87 // Arrange for started_cb_ to be called on the UI thread with the | 84 // Arrange for started_cb_ to be called on the UI thread with the |
88 // below values, nulling out started_cb_. Should only be called | 85 // below values, nulling out started_cb_. Should only be called |
89 // on the IO thread. | 86 // on the IO thread. |
90 void CallStartedCB(DownloadItem* item, | 87 void CallStartedCB(DownloadInterruptReason interrupt_reason); |
91 DownloadInterruptReason interrupt_reason); | 88 |
| 89 void OnCoreReadyToRead(); |
92 | 90 |
93 uint32 download_id_; | 91 uint32 download_id_; |
| 92 |
94 // This is read only on the IO thread, but may only | 93 // This is read only on the IO thread, but may only |
95 // be called on the UI thread. | 94 // be called on the UI thread. |
96 DownloadUrlParameters::OnStartedCallback started_cb_; | 95 DownloadUrlParameters::OnStartedCallback started_cb_; |
97 scoped_ptr<DownloadSaveInfo> save_info_; | |
98 | 96 |
99 // Stores information about the download that must be acquired on the UI | 97 // Stores information about the download that must be acquired on the UI |
100 // thread before StartOnUIThread is called. | 98 // thread before StartOnUIThread is called. |
101 // Created on IO thread, but only accessed on UI thread. |tab_info_| holds | 99 // Created on IO thread, but only accessed on UI thread. |tab_info_| holds |
102 // the pointer until we pass it off to StartOnUIThread or DeleteSoon. | 100 // the pointer until we pass it off to StartOnUIThread or DeleteSoon. |
103 // Marked as a scoped_ptr<> to indicate ownership of the structure, but | 101 // Marked as a scoped_ptr<> to indicate ownership of the structure, but |
104 // deletion must occur on the IO thread. | 102 // deletion must occur on the IO thread. |
105 scoped_ptr<DownloadTabInfo> tab_info_; | 103 scoped_ptr<DownloadTabInfo> tab_info_; |
106 | 104 |
107 // Data flow | 105 DownloadRequestCore core_; |
108 scoped_refptr<net::IOBuffer> read_buffer_; // From URLRequest. | |
109 scoped_ptr<ByteStreamWriter> stream_writer_; // To rest of system. | |
110 | |
111 // Keeps the system from sleeping while this ResourceHandler is alive. If the | |
112 // system enters power saving mode while a request is alive, it can cause the | |
113 // request to fail and the associated download will be interrupted. | |
114 scoped_ptr<PowerSaveBlocker> power_save_blocker_; | |
115 | |
116 // The following are used to collect stats. | |
117 base::TimeTicks download_start_time_; | |
118 base::TimeTicks last_read_time_; | |
119 base::TimeTicks last_stream_pause_time_; | |
120 base::TimeDelta total_pause_time_; | |
121 size_t last_buffer_size_; | |
122 int64 bytes_read_; | |
123 | |
124 int pause_count_; | |
125 bool was_deferred_; | |
126 | |
127 // For DCHECKing | |
128 bool on_response_started_called_; | |
129 | |
130 static const int kReadBufSize = 32768; // bytes | |
131 static const int kThrottleTimeMs = 200; // milliseconds | |
132 | |
133 DISALLOW_COPY_AND_ASSIGN(DownloadResourceHandler); | 106 DISALLOW_COPY_AND_ASSIGN(DownloadResourceHandler); |
134 }; | 107 }; |
135 | 108 |
136 } // namespace content | 109 } // namespace content |
137 | 110 |
138 #endif // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_ | 111 #endif // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_RESOURCE_HANDLER_H_ |
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