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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 BLIMP_ENGINE_MOJO_BLOB_CHANNEL_SERVICE_H_ | 5 #ifndef BLIMP_ENGINE_MOJO_BLOB_CHANNEL_SERVICE_H_ |
6 #define BLIMP_ENGINE_MOJO_BLOB_CHANNEL_SERVICE_H_ | 6 #define BLIMP_ENGINE_MOJO_BLOB_CHANNEL_SERVICE_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 #include <vector> | |
9 | 10 |
11 #include "base/memory/weak_ptr.h" | |
12 #include "base/threading/thread_checker.h" | |
10 #include "blimp/engine/mojo/blob_channel.mojom.h" | 13 #include "blimp/engine/mojo/blob_channel.mojom.h" |
14 #include "blimp/net/blob_channel/blob_channel_sender.h" | |
11 #include "mojo/public/cpp/bindings/binding_set.h" | 15 #include "mojo/public/cpp/bindings/binding_set.h" |
12 | 16 |
13 namespace blimp { | 17 namespace blimp { |
14 | |
15 class BlobChannelSender; | |
16 | |
17 namespace engine { | 18 namespace engine { |
18 | 19 |
19 // Service for processing BlobChannel requests from the renderer. | 20 // Service for processing BlobChannel requests from the renderer. |
20 // Runs on the browser process. | 21 // Runs on the IO thread of the browser process. |
Wez
2016/08/19 19:15:50
nit: Is the caller responsible for calling it on t
Kevin M
2016/08/19 21:43:33
Done.
| |
22 // Calls to the UI thread are executed using the UI thread's TaskRunner. | |
Wez
2016/08/19 19:15:50
nit: This comment seems tautologous; how else woul
Kevin M
2016/08/19 21:43:33
Acknowledged.
| |
21 class BlobChannelService : public mojom::BlobChannel { | 23 class BlobChannelService : public mojom::BlobChannel { |
22 public: | 24 public: |
23 // |blob_channel_sender| must outlive the Mojo connection. | 25 // |blob_channel_sender|: The BlobChannelSender object which will receive |
24 explicit BlobChannelService(BlobChannelSender* blob_channel_sender); | 26 // blobs and answer delivery status queries. |
27 // |task_runner|: The UI thread task runner. | |
Wez
2016/08/19 19:15:50
Can we instead clarify _why_ the caller needs to p
Kevin M
2016/08/19 21:43:33
Done.
| |
28 BlobChannelService( | |
29 base::WeakPtr<BlobChannelSender> blob_channel_sender, | |
30 scoped_refptr<base::SingleThreadTaskRunner> task_runner); | |
Wez
2016/08/19 19:15:50
ui_task_runner?
Here and above, though, the desir
Kevin M
2016/08/19 21:43:33
Done.
Wez
2016/08/20 00:40:24
Is it necessary that this is all on the UI thread?
Kevin M
2016/08/22 19:46:56
Done.
| |
25 | 31 |
26 ~BlobChannelService() override; | 32 ~BlobChannelService() override; |
27 | 33 |
28 // Factory method called by Mojo. | 34 // Factory method called by Mojo. |
29 // Binds |this| to the connection specified by |request|. | 35 // Binds |this| to the connection specified by |request|. |
30 void BindRequest(mojo::InterfaceRequest<mojom::BlobChannel> request); | 36 void BindRequest(mojo::InterfaceRequest<mojom::BlobChannel> request); |
31 | 37 |
32 private: | 38 private: |
39 std::vector<BlobChannelSender::CacheStateEntry> GetCachedBlobIdsOnUiThread(); | |
40 | |
41 // Called when the list of blob IDs arrives from the BlobChannelSender on the | |
42 // UI thread. | |
Wez
2016/08/19 19:15:50
IIUC they "arrive" only because we request them, s
Kevin M
2016/08/19 21:43:33
Done.
| |
43 void ReceivedBlobIds( | |
44 const BlobChannelService::GetCachedBlobIdsCallback& response_callback, | |
45 const std::vector<BlobChannelSender::CacheStateEntry>& ids); | |
46 | |
33 // BlobChannel implementation. | 47 // BlobChannel implementation. |
34 void GetCachedBlobIds( | 48 void GetCachedBlobIds( |
35 const GetCachedBlobIdsCallback& response_callback) override; | 49 const GetCachedBlobIdsCallback& response_callback) override; |
36 void PutBlob(const std::string& id, | 50 void PutBlob(const std::string& id, |
37 mojo::ScopedSharedBufferHandle data, | 51 mojo::ScopedSharedBufferHandle data, |
38 uint32_t size) override; | 52 uint32_t size) override; |
39 void DeliverBlob(const std::string& id) override; | 53 void DeliverBlob(const std::string& id) override; |
40 | 54 |
41 mojo::BindingSet<mojom::BlobChannel> bindings_; | 55 mojo::BindingSet<mojom::BlobChannel> bindings_; |
42 | 56 |
43 // Sender object which will receive the blobs passed over the Mojo service. | 57 // Sender object which will receive the blobs passed over the Mojo service. |
44 BlobChannelSender* blob_channel_sender_; | 58 base::WeakPtr<BlobChannelSender> blob_channel_sender_; |
59 | |
60 // UI thread TaskRunner. | |
61 scoped_refptr<base::SingleThreadTaskRunner> task_runner_; | |
62 | |
63 base::ThreadChecker thread_checker_; | |
45 | 64 |
46 DISALLOW_COPY_AND_ASSIGN(BlobChannelService); | 65 DISALLOW_COPY_AND_ASSIGN(BlobChannelService); |
47 }; | 66 }; |
48 | 67 |
49 } // namespace engine | 68 } // namespace engine |
50 } // namespace blimp | 69 } // namespace blimp |
51 | 70 |
52 #endif // BLIMP_ENGINE_MOJO_BLOB_CHANNEL_SERVICE_H_ | 71 #endif // BLIMP_ENGINE_MOJO_BLOB_CHANNEL_SERVICE_H_ |
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