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chore(napi): Remove unstable libuv methods (#17416)

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This commit removes the libuv pollyfills introduced with Node-API
support.

It is too much Node-specific. Most Node-API modules that depend on libuv
are already giving up the benefits of Node-API. We should rather
encourage modules to use `ThreadSafeFunction` or `AsyncWork` to
interface with the event loop.

Relevant discussion a few months ago:
https://github.com/denoland/deno/pull/13633#discussion_r904916178

cc @bartlomieju
This commit is contained in:
Divy Srivastava 2023-01-14 05:02:42 -08:00 • committed by GitHub
parent b4ce48c80a
commit b9cd19a1e8
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2 changed files with 1 additions and 68 deletions
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3
cli/napi/env.rs
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@ -141,8 +141,7 @@ fn napi_module_register(module: *const NapiModule) -> Result {
#[napi_sym::napi_sym] #[napi_sym::napi_sym]
fn napi_get_uv_event_loop(_env: *mut Env, uv_loop: *mut *mut ()) -> Result { fn napi_get_uv_event_loop(_env: *mut Env, uv_loop: *mut *mut ()) -> Result {
// Don't error out because addons may pass this to // There is no uv_loop in Deno
// our libuv _polyfills_.
*uv_loop = std::ptr::null_mut(); *uv_loop = std::ptr::null_mut();
Ok(()) Ok(())
} }

66
cli/napi/mod.rs
View file

@ -20,69 +20,3 @@ pub mod env;
pub mod js_native_api; pub mod js_native_api;
pub mod threadsafe_functions; pub mod threadsafe_functions;
pub mod util; pub mod util;
use std::os::raw::c_int;
use std::os::raw::c_void;
pub type uv_async_t = *mut uv_async;
pub type uv_loop_t = *mut c_void;
pub type uv_async_cb = extern "C" fn(handle: uv_async_t);
use deno_core::futures::channel::mpsc;
#[repr(C)]
pub struct uv_async {
pub data: Option<*mut c_void>,
callback: uv_async_cb,
sender: Option<
mpsc::UnboundedSender<deno_runtime::deno_napi::PendingNapiAsyncWork>,
>,
ref_sender: Option<
mpsc::UnboundedSender<deno_runtime::deno_napi::ThreadSafeFunctionStatus>,
>,
}
#[no_mangle]
pub extern "C" fn uv_default_loop() -> uv_loop_t {
std::ptr::null_mut()
}
/// # Safety
/// libuv APIs
#[no_mangle]
pub unsafe extern "C" fn uv_async_init(
_loop: uv_loop_t,
async_: uv_async_t,
cb: uv_async_cb,
) -> c_int {
(*async_).callback = cb;
deno_runtime::deno_napi::ASYNC_WORK_SENDER.with(|sender| {
(*async_).sender = Some(sender.borrow().clone().unwrap());
});
deno_runtime::deno_napi::THREAD_SAFE_FN_SENDER.with(|sender| {
sender
.borrow()
.clone()
.unwrap()
.unbounded_send(deno_runtime::deno_napi::ThreadSafeFunctionStatus::Alive)
.unwrap();
(*async_).ref_sender = Some(sender.borrow().clone().unwrap());
});
0
}
/// # Safety
/// libuv APIs
#[no_mangle]
pub unsafe extern "C" fn uv_async_send(async_: uv_async_t) -> c_int {
let sender = (*async_).sender.as_ref().unwrap();
let fut = Box::new(move || {
((*async_).callback)(async_);
});
match sender.unbounded_send(fut) {
Ok(_) => 0,
Err(_) => 1,
}
}