UV_ONCE_INIT       27 src/unix/threadpool.c static uv_once_t once = UV_ONCE_INIT;
UV_ONCE_INIT       40 src/win/core.c static uv_once_t uv_init_guard_ = UV_ONCE_INIT;
UV_ONCE_INIT       41 src/win/core.c static uv_once_t uv_default_loop_init_guard_ = UV_ONCE_INIT;
UV_ONCE_INIT       47 src/win/poll.c static uv_once_t overlapped_dummy_init_guard_ = UV_ONCE_INIT;
UV_ONCE_INIT       50 src/win/process.c static uv_once_t uv_global_job_handle_init_guard_ = UV_ONCE_INIT;