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cyber: remove poco shared library dependency
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| /****************************************************************************** | ||
| * Copyright 2018 The Apollo Authors. All Rights Reserved. | ||
| * | ||
| * 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. | ||
| *****************************************************************************/ | ||
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| #ifndef CYBER_CLASS_LOADER_UTILITY_EXCEPTION_H_ | ||
| #define CYBER_CLASS_LOADER_UTILITY_EXCEPTION_H_ | ||
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| #include <string> | ||
| #include <exception> | ||
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| namespace apollo { | ||
| namespace cyber { | ||
| namespace class_loader { | ||
| namespace utility { | ||
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| #define DECLARE_EXCEPTION_CLASS(CLS, BASE) \ | ||
| class CLS : public BASE { \ | ||
| public: \ | ||
| explicit CLS(const std::string& err_msg) : err_msg_(err_msg) {} \ | ||
| const char* what() const noexcept override { \ | ||
| return err_msg_.c_str(); \ | ||
| } \ | ||
| private: \ | ||
| std::string err_msg_; \ | ||
| }; | ||
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| DECLARE_EXCEPTION_CLASS(LibraryAlreadyLoadedException, std::exception) | ||
| DECLARE_EXCEPTION_CLASS(LibraryLoadException, std::exception) | ||
| DECLARE_EXCEPTION_CLASS(NotFoundException, std::exception) | ||
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| } // namespace utility | ||
| } // namespace class_loader | ||
| } // namespace cyber | ||
| } // namespace apollo | ||
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| #endif // CYBER_CLASS_LOADER_UTILITY_EXCEPTION_H_ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| /****************************************************************************** | ||
| * Copyright 2018 The Apollo Authors. All Rights Reserved. | ||
| * | ||
| * 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. | ||
| *****************************************************************************/ | ||
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| #include "cyber/class_loader/utility/shared_library.h" | ||
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| #include <dlfcn.h> | ||
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| namespace apollo { | ||
| namespace cyber { | ||
| namespace class_loader { | ||
| namespace utility { | ||
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| SharedLibrary::SharedLibrary() : handle_(nullptr) {} | ||
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| SharedLibrary::SharedLibrary(const std::string& filename) { | ||
| Load(filename, 0); | ||
| } | ||
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| SharedLibrary::SharedLibrary(const std::string& filename, int flags) { | ||
| Load(filename, flags); | ||
| } | ||
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| void SharedLibrary::Load(const std::string& filename) { | ||
| Load(filename, 0); | ||
| } | ||
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| void SharedLibrary::Load(const std::string& filename, int flags) { | ||
| std::lock_guard<std::mutex> lock(mutex_); | ||
| if (handle_) throw LibraryAlreadyLoadedException(filename); | ||
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| int real_flag = RTLD_LAZY; | ||
| if (flags & SHLIB_LOCAL) { | ||
| real_flag |= SHLIB_LOCAL; | ||
| } else { | ||
| real_flag |= SHLIB_GLOBAL; | ||
| } | ||
| handle_ = dlopen(filename.c_str(), real_flag); | ||
| if (!handle_) { | ||
| const char* err = dlerror(); | ||
| throw LibraryLoadException(err ? std::string(err) : filename); | ||
| } | ||
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| filename_ = filename; | ||
| } | ||
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| void SharedLibrary::Unload() { | ||
| std::lock_guard<std::mutex> lock(mutex_); | ||
| if (handle_) { | ||
| dlclose(handle_); | ||
| handle_ = nullptr; | ||
| } | ||
| } | ||
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| bool SharedLibrary::IsLoaded() { | ||
| std::lock_guard<std::mutex> lock(mutex_); | ||
| return handle_ != nullptr; | ||
| } | ||
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| bool SharedLibrary::HasSymbol(const std::string& name) { | ||
| return GetSymbol(name) != nullptr; | ||
| } | ||
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| void* SharedLibrary::GetSymbol(const std::string& name) { | ||
| std::lock_guard<std::mutex> lock(mutex_); | ||
| if (!handle_) return nullptr; | ||
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| void* result = dlsym(handle_, name.c_str()); | ||
| if (!result) { | ||
| throw NotFoundException(name); | ||
| } | ||
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| return result; | ||
| } | ||
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| SharedLibrary::~SharedLibrary() { | ||
| Unload(); | ||
| } | ||
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| } // namespace utility | ||
| } // namespace class_loader | ||
| } // namespace cyber | ||
| } // namespace apollo |
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