1e41f4b71Sopenharmony_ci# Utils 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci## Introduction 4e41f4b71Sopenharmony_ci 5e41f4b71Sopenharmony_ciUtils provides OpenHarmony basic components, which provide enhanced C, C++, and JS APIs for OpenHarmony service subsystems and upper-layer applications. Utils provides the following components in **/commonlibrary**: 6e41f4b71Sopenharmony_ci``` 7e41f4b71Sopenharmony_ci/commonlibrary 8e41f4b71Sopenharmony_ci ├── c_utils # c and c++ utils. 9e41f4b71Sopenharmony_ci ├── ets_utils # extended TypeScript (eTS) utils. 10e41f4b71Sopenharmony_ci └── utils_lite # Utils in c and JS for LiteOS. 11e41f4b71Sopenharmony_ci``` 12e41f4b71Sopenharmony_ciThe following lists the functions provided by each utils. 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci**c_utils** 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci- Enhanced APIs for operations related to files, paths, and strings 17e41f4b71Sopenharmony_ci- APIs for read/write locks, semaphores, timers, threads, and thread pools 18e41f4b71Sopenharmony_ci- APIs for security data containers and data serialization 19e41f4b71Sopenharmony_ci- Error codes for each subsystem 20e41f4b71Sopenharmony_ci 21e41f4b71Sopenharmony_ci**ets_utils** 22e41f4b71Sopenharmony_ci 23e41f4b71Sopenharmony_ci- JS APIs for URI, URL, and XML operations 24e41f4b71Sopenharmony_ci- JS APIs for string encoding and decoding 25e41f4b71Sopenharmony_ci- JS APIs for process-related operations 26e41f4b71Sopenharmony_ci- Multithreading capability in JS 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ci**utils_lite** 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci- Hardware Abstraction Layer (HAL) APIs for file operations 31e41f4b71Sopenharmony_ci- APIs for internal functions, such as the timer 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci## Related Documents 34e41f4b71Sopenharmony_ci[Utils Development Guide](https://gitee.com/openharmony/docs/blob/master/en/device-dev/subsystems/subsys-utils-guide.md) 35e41f4b71Sopenharmony_ci 36e41f4b71Sopenharmony_ci## Repositories Involved 37e41f4b71Sopenharmony_ci 38e41f4b71Sopenharmony_ci**Utils** 39e41f4b71Sopenharmony_ci 40e41f4b71Sopenharmony_ci 41e41f4b71Sopenharmony_ci[commonlibrary\_c\_utils](https://gitee.com/openharmony/commonlibrary_c_utils) 42e41f4b71Sopenharmony_ci 43e41f4b71Sopenharmony_ci[commonlibrary\_ets\_utils](https://gitee.com/openharmony/commonlibrary_ets_utils) 44e41f4b71Sopenharmony_ci 45e41f4b71Sopenharmony_ci[commonlibrary\_utils\_lite](https://gitee.com/openharmony/commonlibrary_utils_lite) 46