OLD | NEW |
---|---|
(Empty) | |
1 // Copyright (c) 2014 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 | |
5 #ifndef PPAPI_PROXY_FILE_MAPPING_RESOURCE_H_ | |
6 #define PPAPI_PROXY_FILE_MAPPING_RESOURCE_H_ | |
7 | |
8 #include "ppapi/proxy/file_io_resource.h" | |
9 #include "ppapi/proxy/plugin_resource.h" | |
10 #include "ppapi/proxy/ppapi_proxy_export.h" | |
11 #include "ppapi/thunk/ppb_file_mapping_api.h" | |
12 | |
13 namespace ppapi { | |
14 namespace proxy { | |
15 | |
16 // The proxy-side resource for PPB_FileMapping. | |
17 class PPAPI_PROXY_EXPORT FileMappingResource | |
18 : public PluginResource, | |
19 public thunk::PPB_FileMapping_API { | |
20 public: | |
21 FileMappingResource(Connection connection, PP_Instance instance); | |
22 | |
23 private: | |
24 virtual ~FileMappingResource(); | |
25 | |
26 // Resource implementation. | |
27 virtual thunk::PPB_FileMapping_API* AsPPB_FileMapping_API() OVERRIDE; | |
28 | |
29 // PPB_FileMapping_API implementation. | |
30 virtual int32_t Map(PP_Instance instance, | |
31 PP_Resource file_io, | |
32 int64_t length, | |
33 uint32_t map_protection, | |
34 uint32_t map_flags, | |
bbudge
2014/01/27 18:56:44
nit: These could be named 'protection' and 'flags'
| |
35 int64_t offset, | |
36 void** address, | |
37 scoped_refptr<TrackedCallback> callback) OVERRIDE; | |
38 virtual int32_t Unmap(PP_Instance instance, | |
39 const void* address, | |
40 int64_t length, | |
41 scoped_refptr<TrackedCallback> callback) OVERRIDE; | |
42 virtual int64_t GetMapPageSize(PP_Instance instance) OVERRIDE; | |
43 | |
44 struct MapResult { | |
45 MapResult() : result(PP_ERROR_FAILED), address(NULL) { | |
46 } | |
47 int32_t result; | |
48 void* address; | |
49 }; | |
50 void OnMapCompleted(void** mapped_address_out_param, | |
51 int64_t length, | |
52 scoped_refptr<TrackedCallback> callback, | |
53 const MapResult& map_result); | |
54 | |
55 // These functions perform potentially blocking operations so they should not | |
56 // be called on the main thread or while we hold the proxy lock. Their | |
57 // implementation is platform specific. See file_mapping_resource_posix.cc and | |
58 // file_mapping_resource_win.cc. | |
59 static MapResult DoMapBlocking( | |
60 scoped_refptr<FileIOResource::FileHandleHolder> handle, | |
61 void* address_hint, | |
62 int64_t length, | |
63 uint32_t map_protection, | |
64 uint32_t map_flags, | |
65 int64_t offset); | |
66 static int32_t DoUnmapBlocking(const void* address, int64_t length); | |
67 // DoGetMapPageSize is platform-specific, but fast enough that we can call it | |
68 // on the main thread with the lock. | |
69 static int64_t DoGetMapPageSize(); | |
70 | |
71 DISALLOW_COPY_AND_ASSIGN(FileMappingResource); | |
72 }; | |
73 | |
74 } // namespace proxy | |
75 } // namespace ppapi | |
76 | |
77 #endif // PPAPI_PROXY_FILE_MAPPING_RESOURCE_H_ | |
OLD | NEW |