lib.h

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/*
 * Copyright (C) 2023 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#pragma once
 
#include <functional>
#include <memory>
 
#include "cuttlefish/host/graphics_detector/expected.h"
 
namespace gfxstream {
 
class Lib {
 public:
  static gfxstream::expected<Lib, std::string> Load(const char* name);
 
  Lib() = default;
 
  Lib(const Lib&) = delete;
  Lib& operator=(const Lib&) = delete;
 
  Lib(Lib&&) = default;
  Lib& operator=(Lib&&) = default;
 
  using FunctionPtr = void (*)(void);
 
  FunctionPtr GetSymbol(const char* name);
 
 private:
  struct LibraryCloser {
   public:
    void operator()(void* library);
  };
 
  using ManagedLibrary = std::unique_ptr<void, LibraryCloser>;
 
  ManagedLibrary lib_;
};
 
}  // namespace gfxstream