| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef PPAPI_PROXY_FILE_MAPPING_RESOURCE_H_ |
| #define PPAPI_PROXY_FILE_MAPPING_RESOURCE_H_ |
| |
| #include "ppapi/proxy/file_io_resource.h" |
| #include "ppapi/proxy/plugin_resource.h" |
| #include "ppapi/proxy/ppapi_proxy_export.h" |
| #include "ppapi/thunk/ppb_file_mapping_api.h" |
| |
| namespace ppapi { |
| namespace proxy { |
| |
| // The proxy-side resource for PPB_FileMapping. |
| class PPAPI_PROXY_EXPORT FileMappingResource |
| : public PluginResource, |
| public thunk::PPB_FileMapping_API { |
| public: |
| FileMappingResource(Connection connection, PP_Instance instance); |
| |
| private: |
| virtual ~FileMappingResource(); |
| |
| // Resource implementation. |
| virtual thunk::PPB_FileMapping_API* AsPPB_FileMapping_API() override; |
| |
| // PPB_FileMapping_API implementation. |
| virtual int32_t Map(PP_Instance instance, |
| PP_Resource file_io, |
| int64_t length, |
| uint32_t protection, |
| uint32_t flags, |
| int64_t offset, |
| void** address, |
| scoped_refptr<TrackedCallback> callback) override; |
| virtual int32_t Unmap(PP_Instance instance, |
| const void* address, |
| int64_t length, |
| scoped_refptr<TrackedCallback> callback) override; |
| virtual int64_t GetMapPageSize(PP_Instance instance) override; |
| |
| struct MapResult { |
| MapResult() : result(PP_ERROR_FAILED), address(NULL) { |
| } |
| int32_t result; |
| void* address; |
| }; |
| void OnMapCompleted(void** mapped_address_out_param, |
| int64_t length, |
| scoped_refptr<TrackedCallback> callback, |
| const MapResult& map_result); |
| |
| // These functions perform potentially blocking operations so they should not |
| // be called on the main thread or while we hold the proxy lock. Their |
| // implementation is platform specific. See file_mapping_resource_posix.cc and |
| // file_mapping_resource_win.cc. |
| static MapResult DoMapBlocking( |
| scoped_refptr<FileIOResource::FileHolder> file_holder, |
| void* address_hint, |
| int64_t length, |
| uint32_t protection, |
| uint32_t flags, |
| int64_t offset); |
| static int32_t DoUnmapBlocking(const void* address, int64_t length); |
| // DoGetMapPageSize is platform-specific, but fast enough that we can call it |
| // on the main thread with the lock. |
| static int64_t DoGetMapPageSize(); |
| |
| DISALLOW_COPY_AND_ASSIGN(FileMappingResource); |
| }; |
| |
| } // namespace proxy |
| } // namespace ppapi |
| |
| #endif // PPAPI_PROXY_FILE_MAPPING_RESOURCE_H_ |