1 /* 2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "host/libs/graphics_detector/lib.h" 18 19 #include <android-base/logging.h> 20 #include <android-base/strings.h> 21 #include <dlfcn.h> 22 23 namespace cuttlefish { 24 operator ()(void * library)25void Lib::LibraryCloser::operator()(void* library) { 26 if (library != nullptr) { 27 dlclose(library); 28 } 29 } 30 Load(const char * name)31std::optional<Lib> Lib::Load(const char* name) { 32 Lib lib; 33 lib.lib_ = ManagedLibrary(dlopen(name, RTLD_NOW | RTLD_LOCAL)); 34 if (!lib.lib_) { 35 LOG(ERROR) << "Failed to load library: " << name; 36 return std::nullopt; 37 } 38 39 LOG(VERBOSE) << "Loaded library: " << name; 40 return std::move(lib); 41 } 42 GetSymbol(const char * name)43Lib::FunctionPtr Lib::GetSymbol(const char* name) { 44 return reinterpret_cast<FunctionPtr>(dlsym(lib_.get(), name)); 45 } 46 47 } // namespace cuttlefish 48