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151 lines
3.2 KiB
C++
151 lines
3.2 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_FML_MAPPING_H_
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#define FLUTTER_FML_MAPPING_H_
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#include <initializer_list>
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#include <memory>
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#include <string>
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#include <vector>
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#include "flutter/fml/build_config.h"
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#include "flutter/fml/file.h"
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#include "flutter/fml/macros.h"
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#include "flutter/fml/native_library.h"
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#include "flutter/fml/unique_fd.h"
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namespace fml {
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class Mapping {
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public:
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Mapping();
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virtual ~Mapping();
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virtual size_t GetSize() const = 0;
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virtual const uint8_t* GetMapping() const = 0;
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private:
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FML_DISALLOW_COPY_AND_ASSIGN(Mapping);
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};
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class FileMapping final : public Mapping {
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public:
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enum class Protection {
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kRead,
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kWrite,
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kExecute,
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};
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FileMapping(const fml::UniqueFD& fd,
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std::initializer_list<Protection> protection = {
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Protection::kRead});
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~FileMapping() override;
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static std::unique_ptr<FileMapping> CreateReadOnly(const std::string& path);
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static std::unique_ptr<FileMapping> CreateReadOnly(
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const fml::UniqueFD& base_fd,
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const std::string& sub_path = "");
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static std::unique_ptr<FileMapping> CreateReadExecute(
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const std::string& path);
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static std::unique_ptr<FileMapping> CreateReadExecute(
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const fml::UniqueFD& base_fd,
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const std::string& sub_path = "");
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// |Mapping|
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size_t GetSize() const override;
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// |Mapping|
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const uint8_t* GetMapping() const override;
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uint8_t* GetMutableMapping();
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bool IsValid() const;
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private:
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bool valid_ = false;
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size_t size_ = 0;
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uint8_t* mapping_ = nullptr;
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uint8_t* mutable_mapping_ = nullptr;
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#if OS_WIN
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fml::UniqueFD mapping_handle_;
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#endif
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FML_DISALLOW_COPY_AND_ASSIGN(FileMapping);
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};
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class DataMapping final : public Mapping {
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public:
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DataMapping(std::vector<uint8_t> data);
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DataMapping(const std::string& string);
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~DataMapping() override;
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// |Mapping|
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size_t GetSize() const override;
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// |Mapping|
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const uint8_t* GetMapping() const override;
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private:
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std::vector<uint8_t> data_;
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FML_DISALLOW_COPY_AND_ASSIGN(DataMapping);
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};
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class NonOwnedMapping final : public Mapping {
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public:
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using ReleaseProc = std::function<void(const uint8_t* data, size_t size)>;
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NonOwnedMapping(const uint8_t* data,
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size_t size,
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const ReleaseProc& release_proc = nullptr);
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~NonOwnedMapping() override;
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// |Mapping|
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size_t GetSize() const override;
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// |Mapping|
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const uint8_t* GetMapping() const override;
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private:
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const uint8_t* const data_;
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const size_t size_;
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const ReleaseProc release_proc_;
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FML_DISALLOW_COPY_AND_ASSIGN(NonOwnedMapping);
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};
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class SymbolMapping final : public Mapping {
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public:
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SymbolMapping(fml::RefPtr<fml::NativeLibrary> native_library,
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const char* symbol_name);
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~SymbolMapping() override;
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// |Mapping|
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size_t GetSize() const override;
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// |Mapping|
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const uint8_t* GetMapping() const override;
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private:
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fml::RefPtr<fml::NativeLibrary> native_library_;
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const uint8_t* mapping_ = nullptr;
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FML_DISALLOW_COPY_AND_ASSIGN(SymbolMapping);
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};
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} // namespace fml
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#endif // FLUTTER_FML_MAPPING_H_
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