Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(89)

Side by Side Diff: content/browser/renderer_host/pepper/pepper_filesystem_provider_backend_chromeos.h

Issue 1093383002: [WIP] Provided file system from NACL. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Moved several modules to chromeos folder. Created 5 years, 5 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch
OLDNEW
(Empty)
1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 #ifndef PEPPER_FILESYSTEM_PROVIDER_HOST_H
5 #define PEPPER_FILESYSTEM_PROVIDER_HOST_H
6
7 #include <chrono>
8 #include <queue>
9 #include <string>
10 #include <vector>
11
12 #include "base/basictypes.h"
13 #include "base/callback.h"
14 #include "base/memory/weak_ptr.h"
15 #include "chrome/browser/chromeos/file_system_provider/file_system_plugin/plugin _operation_router.h"
16 #include "content/browser/renderer_host/pepper/pepper_filesystem_provider_host.h "
17 #include "content/common/content_export.h"
18 #include "ppapi/c/dev/ppb_filesystemprovider_dev.h"
19 #include "ppapi/c/pp_file_info.h"
20 #include "ppapi/host/host_message_context.h"
21
22
23 namespace content {
24
25 class CONTENT_EXPORT PepperFilesystemProviderBackendChromeOS
26 : public PepperFilesystemProviderBackend
27 , public chromeos::file_system_provider::
28 PluginOperationRouter::PluginOperationRouterClient {
29 public:
30
31 struct ProvidedFilesystemInfo{
32 ProvidedFilesystemInfo();
33 std::string filesystem_id;
34 std::string display_name;
35 std::string plugin_name;
36 bool writable;
37 int32_t opened_files_limit;
38 };
39 struct ShmBuffer {
40 ShmBuffer(uint32_t size, scoped_ptr<base::SharedMemory> shm);
41 ~ShmBuffer();
42 uint32_t size;
43 scoped_ptr<base::SharedMemory> shm;
44 };
45 // Waiting room for shared memory
46 class ShmChannelController{
47 public:
48 typedef base::Callback<bool(scoped_ptr<base::ListValue>)>
49 FlushRequestCallback;
50 ShmChannelController( uint32_t size, FlushRequestCallback callback );
51 ~ShmChannelController();
52 // This will discard the request if no room is found
53 bool EnqueueRequest(scoped_ptr<base::ListValue> response);
54 bool PushNextRequest();
55 bool AckLastPushedRequest();
56 private:
57 uint32_t size();
58 uint32_t max_size;
59 ScopedVector<base::ListValue> replies;
60 bool ready;
61 FlushRequestCallback callback;
62 };
63 public:
64 // Creates a new PepperFilesystemProviderBackendChromeOS
65 PepperFilesystemProviderBackendChromeOS(content::BrowserPpapiHost *host,
66 PP_Instance, PP_Resource);
67 ~PepperFilesystemProviderBackendChromeOS()override;
68 private:
69 // Handles the mount requests from plugins
70 int32_t SendMountRequest(
71 ppapi::host::HostMessageContext *context,
72 const base::ListValue&
73 /*std::string fsid,
74 std::string display_name,
75 bool writable,
76 int32_t opened_files_limit*/)override;
77 // Handles unmount requests from plugins
78 int32_t SendUnmountRequest(
79 ppapi::host::HostMessageContext* context,
80 const std::string& fsid )override;
81 // Handles plugin notifications. These are responses to browser request
82 int32_t OnPluginResponse(ppapi::host::HostMessageContext *context,
83 const base::ListValue &)override;
84 int32_t OnPluginWriteAck(ppapi::host::HostMessageContext *context)override;
85 int32_t OnPluginNotification(ppapi::host::HostMessageContext *context,
86 const base::ListValue &)override;
87 // Helper Function to Send a notification to the backend
88 static void SendNotificationOnUI(const ProvidedFilesystemInfo&,
89 scoped_ptr<base::ListValue>);
90 // Helper Functions that register desired events with
91 // the PluginEventRouter
92 void RegisterFilesystemListenedOperations();
93 void UnregisterFilesystemListenedOperations();
94
95 // The next 2 functions are for the mount logic
96 static base::File::Error RegisterFilesystemOnUI(
97 ProvidedFilesystemInfo filesystem_info);
98 void MountReplyOnIO(
99 ppapi::host::ReplyMessageContext reply_msg,
100 ProvidedFilesystemInfo filesystem_info,
101 base::File::Error err );
102 // The next 2 functions are for the unmount logic
103 static base::File::Error UnregisterFilesystemOnUI(
104 ProvidedFilesystemInfo filesystem_info);
105 void UnmountReplyOnIO(
106 ppapi::host::ReplyMessageContext reply_msg,
107 base::File::Error err );
108
109 // PluginOperationsRouterClient interface
110 void OnDispatchOperationRequest(
111 chromeos::file_system_provider::RequestType,
112 scoped_ptr<base::ListValue> request)override;
113
114 // Composes success messages that are expected
115 // by the filesystem backend
116 static int32_t OnSuccessResponse(int operation,
117 const ProvidedFilesystemInfo& filesystem_info,
118 scoped_ptr<base::ListValue> response);
119 // Composes error messages that are expected
120 // by the filesystem backend
121 static int32_t OnErrorResponse(
122 const ProvidedFilesystemInfo& filesystem_info,
123 scoped_ptr<base::ListValue> response);
124
125 // Utility function that is used for inserting the request payload into
126 // the shared memory and send it to the plugin
127 bool FlushRequest(scoped_ptr<base::ListValue> request);
128 // Initializes the shared memory buffer and notifies the plugin
129 bool InitializeMemoryBuffer( );
130 // Replaces a defined slot inside the list with a copied chunk
131 // from shared memory
132 bool AddFromSharedMemoryToMessage(base::ListValue& message);
133 // Extracts from the message a defined slot from inside the list
134 // and places it in memory.
135 bool AddFromMessageToSharedMemory(base::ListValue& message);
136 // Removes a custom header that it's use to make the processing easier
137 // and pre-processes the message
138 bool PreprocessMessage(base::ListValue& message,
139 bool& message_status,
140 int& operation_type);
141 void SendReadAck();
142 // The filesystem info
143 ProvidedFilesystemInfo filesystem_info_;
144 // Flag for status
145 bool mounted_;
146 // 1st: Read Buffer - kReaderBufferSize
147 // 2nd: Write Buffer - kWriterBufferSize
148 scoped_ptr<ShmBuffer> read_write_buffer_;
149 // Not owned. These are owned by the parent ResourceHost
150 ppapi::host::PpapiHost* host_;
151 PP_Resource resource_;
152 scoped_ptr<ShmChannelController> write_channel_controller_;
153 // Sabin Remove this
154 std::chrono::time_point<std::chrono::system_clock> time_stamp_;
155 base::WeakPtrFactory<PepperFilesystemProviderBackendChromeOS> weak_factory_;
156 DISALLOW_COPY_AND_ASSIGN(PepperFilesystemProviderBackendChromeOS);
157 };
158
159 namespace filesystem_provider_internal {
160 struct MountOperationTranslator{
161 MountOperationTranslator(){}
162 ~MountOperationTranslator(){}
163
164 static scoped_ptr<MountOperationTranslator> PopulateFromResponse(
165 const base::ListValue& request);
166 // The filesystem identifier of the filesystem related to this operation.
167 std::string file_system_id;
168 // The display name for the filesystem
169 std::string display_name;
170 // A flag that indicates if the filesystem is writable or not
171 bool writable;
172 // The opened files limit indicator. If 0 there is no file limit
173 int opened_files_limit;
174 };
175 } // namespace filesystem_provider_internal
176 } // namespace content
177
178 #endif // PEPPER_FILESYSTEM_PROVIDER_HOST_H
179
OLDNEW

Powered by Google App Engine
This is Rietveld 408576698