* migrate threading related interface from API 1.0 to 2.0 * fix code style * fix @ref issue in doc * change <> to quotation marks * restore threading related interface API 1.0 * restore the changes of legacy code
* migrate threading related interface from API 1.0 to 2.0 * fix code style * fix @ref issue in doc * change <> to quotation marks * restore threading related interface API 1.0 * restore the changes of legacy code