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| 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 protection, |
| 34 uint32_t 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 protection, |
| 64 uint32_t 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_ |
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