napi_ref_threadsafe_function

NAPI_EXTERN napi_status
napi_ref_threadsafe_function(node_api_basic_env env, napi_threadsafe_function func); 拷贝

• [in] env：调用该 API 时所处的环境。
• [in] func：要引用的线程安全函数。

此 API 用于指示在主线程上运行的事件循环在 func 被销毁之前不应退出。与 uv_ref 类似，它也是幂等的。

【This API is used to indicate that the event loop running on the main thread should not exit until func has been destroyed. Similar to uv_ref it is also idempotent.】

napi_unref_threadsafe_function 并不会将线程安全函数标记为可销毁，napi_ref_threadsafe_function 也不会阻止其被销毁。napi_acquire_threadsafe_function 和 napi_release_threadsafe_function 可用于该目的。

【Neither does napi_unref_threadsafe_function mark the thread-safe functions as able to be destroyed nor does napi_ref_threadsafe_function prevent it from being destroyed. napi_acquire_threadsafe_function and napi_release_threadsafe_function are available for that purpose.】

此 API 只能从主线程调用。

【This API may only be called from the main thread.】