| // Copyright (c) 2012 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 CONTENT_BROWSER_FILE_DESCRIPTOR_INFO_IMPL_H_ |
| #define CONTENT_BROWSER_FILE_DESCRIPTOR_INFO_IMPL_H_ |
| |
| #include <stddef.h> |
| |
| #include <map> |
| #include <memory> |
| #include <vector> |
| |
| #include "base/files/memory_mapped_file.h" |
| #include "content/common/content_export.h" |
| #include "content/public/browser/posix_file_descriptor_info.h" |
| |
| namespace content { |
| |
| class PosixFileDescriptorInfoImpl : public PosixFileDescriptorInfo { |
| public: |
| CONTENT_EXPORT static std::unique_ptr<PosixFileDescriptorInfo> Create(); |
| |
| ~PosixFileDescriptorInfoImpl() override; |
| void Share(int id, base::PlatformFile fd) override; |
| void ShareWithRegion(int id, |
| base::PlatformFile fd, |
| const base::MemoryMappedFile::Region& region) override; |
| void Transfer(int id, base::ScopedFD fd) override; |
| const base::FileHandleMappingVector& GetMapping() const override; |
| base::FileHandleMappingVector GetMappingWithIDAdjustment( |
| int delta) const override; |
| base::PlatformFile GetFDAt(size_t i) const override; |
| int GetIDAt(size_t i) const override; |
| const base::MemoryMappedFile::Region& GetRegionAt(size_t i) const override; |
| size_t GetMappingSize() const override; |
| bool OwnsFD(base::PlatformFile file) const override; |
| base::ScopedFD ReleaseFD(base::PlatformFile file) override; |
| |
| private: |
| PosixFileDescriptorInfoImpl(); |
| |
| void AddToMapping(int id, |
| base::PlatformFile fd, |
| const base::MemoryMappedFile::Region& region); |
| bool HasID(int id) const; |
| base::FileHandleMappingVector mapping_; |
| // Maps the ID of a FD to the region to use for that FD, the whole file if not |
| // in the map. |
| std::map<int, base::MemoryMappedFile::Region> ids_to_regions_; |
| std::vector<base::ScopedFD> owned_descriptors_; |
| }; |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_FILE_DESCRIPTOR_INFO_IMPL_H_ |