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https://github.com/denoland/deno.git
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90c0381272
In Rust, it is UB if a slice is mutated while borrowed except through the slice itself, and it is also UB if a mutable slice is read while borrowed. The op macro allows borrowing an `ArrayBuffer{,View}` as a memory slice for the duration of an op, but this is not sound for async ops, since the `ArrayBuffer` could be accessed from JS during the await points. This PR therefore disallows such automatic borrowing only for async ops. Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
140 lines
4.8 KiB
Text
140 lines
4.8 KiB
Text
#[allow(non_camel_case_types)]
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///Auto-generated by `deno_ops`, i.e: `#[op]`
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///
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///Use `op_async_result::decl()` to get an op-declaration
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///you can include in a `deno_core::Extension`.
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pub struct op_async_result;
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#[doc(hidden)]
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impl op_async_result {
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pub fn name() -> &'static str {
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stringify!(op_async_result)
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}
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pub fn v8_fn_ptr<'scope>() -> deno_core::v8::FunctionCallback {
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use deno_core::v8::MapFnTo;
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Self::v8_func.map_fn_to()
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}
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pub fn decl<'scope>() -> deno_core::OpDecl {
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deno_core::OpDecl {
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name: Self::name(),
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v8_fn_ptr: Self::v8_fn_ptr(),
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enabled: true,
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fast_fn: Some(
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Box::new(op_async_result_fast {
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_phantom: ::std::marker::PhantomData,
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}),
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),
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is_async: true,
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is_unstable: false,
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is_v8: false,
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argc: 1usize,
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}
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}
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#[inline]
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#[allow(clippy::too_many_arguments)]
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async fn call(state: Rc<RefCell<OpState>>, rid: ResourceId) -> Result<u32, Error> {}
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pub fn v8_func<'scope>(
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scope: &mut deno_core::v8::HandleScope<'scope>,
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args: deno_core::v8::FunctionCallbackArguments,
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mut rv: deno_core::v8::ReturnValue,
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) {
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use deno_core::futures::FutureExt;
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let ctx = unsafe {
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&*(deno_core::v8::Local::<deno_core::v8::External>::cast(args.data()).value()
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as *const deno_core::_ops::OpCtx)
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};
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let op_id = ctx.id;
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let realm_idx = ctx.realm_idx;
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let promise_id = args.get(0);
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let promise_id = deno_core::v8::Local::<
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deno_core::v8::Integer,
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>::try_from(promise_id)
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.map(|l| l.value() as deno_core::PromiseId)
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.map_err(deno_core::anyhow::Error::from);
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let promise_id: deno_core::PromiseId = match promise_id {
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Ok(promise_id) => promise_id,
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Err(err) => {
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deno_core::_ops::throw_type_error(
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scope,
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format!("invalid promise id: {}", err),
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);
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return;
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}
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};
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let arg_0 = args.get(1usize as i32);
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let arg_0 = match deno_core::serde_v8::from_v8(scope, arg_0) {
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Ok(v) => v,
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Err(err) => {
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let msg = format!(
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"Error parsing args at position {}: {}", 1usize,
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deno_core::anyhow::Error::from(err)
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);
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return deno_core::_ops::throw_type_error(scope, msg);
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}
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};
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let get_class = {
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let state = ::std::cell::RefCell::borrow(&ctx.state);
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state.tracker.track_async(op_id);
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state.get_error_class_fn
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};
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deno_core::_ops::queue_async_op(
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ctx,
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scope,
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false,
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async move {
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let result = Self::call(ctx.state.clone(), arg_0).await;
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(
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realm_idx,
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promise_id,
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op_id,
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deno_core::_ops::to_op_result(get_class, result),
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)
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},
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);
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}
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}
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struct op_async_result_fast {
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_phantom: ::std::marker::PhantomData<()>,
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}
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impl<'scope> deno_core::v8::fast_api::FastFunction for op_async_result_fast {
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fn function(&self) -> *const ::std::ffi::c_void {
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op_async_result_fast_fn as *const ::std::ffi::c_void
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}
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fn args(&self) -> &'static [deno_core::v8::fast_api::Type] {
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use deno_core::v8::fast_api::Type::*;
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use deno_core::v8::fast_api::CType;
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&[V8Value, Int32, Uint32, CallbackOptions]
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}
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fn return_type(&self) -> deno_core::v8::fast_api::CType {
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deno_core::v8::fast_api::CType::Void
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}
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}
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fn op_async_result_fast_fn<'scope>(
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_: deno_core::v8::Local<deno_core::v8::Object>,
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__promise_id: i32,
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rid: ResourceId,
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fast_api_callback_options: *mut deno_core::v8::fast_api::FastApiCallbackOptions,
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) -> () {
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use deno_core::v8;
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use deno_core::_ops;
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let __opts: &mut v8::fast_api::FastApiCallbackOptions = unsafe {
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&mut *fast_api_callback_options
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};
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let __ctx = unsafe {
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&*(v8::Local::<v8::External>::cast(unsafe { __opts.data.data }).value()
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as *const _ops::OpCtx)
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};
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let state = __ctx.state.clone();
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let result = op_async_result::call(state, rid);
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let __op_id = __ctx.id;
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let __state = ::std::cell::RefCell::borrow(&__ctx.state);
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__state.tracker.track_async(__op_id);
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let realm_idx = __ctx.realm_idx;
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let __get_class = __state.get_error_class_fn;
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let result = _ops::queue_fast_async_op(
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__ctx,
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async move {
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let result = result.await;
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(realm_idx, __promise_id, __op_id, _ops::to_op_result(__get_class, result))
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},
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);
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}
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