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f16fe44303
Pull request #14019 enabled initial support for realms, but it did not include support for async ops anywhere other than the main realm. The main issue was that the `js_recv_cb` callback, which resolves promises corresponding to async ops, was only set for the main realm, so async ops in other realms would never resolve. Furthermore, promise ID's are specific to each realm, which meant that async ops from other realms would result in a wrong promise from the main realm being resolved. This change creates a `ContextState` struct, similar to `JsRuntimeState` but stored in a slot of each `v8::Context`, which contains a `js_recv_cb` callback for each realm. Combined with a new list of known realms, which stores them as `v8::Weak<v8::Context>`, and a change in the `#[op]` macro to pass the current context to `queue_async_op`, this makes it possible to send the results of promises for different realms to their realm, and prevent the ID's from getting mixed up. Additionally, since promise ID's are no longer unique to the isolate, having a single set of unrefed ops doesn't work. This change therefore also moves `unrefed_ops` from `JsRuntimeState` to `ContextState`, and adds the lengths of the unrefed op sets for all known realms to get the total number of unrefed ops to compare in the event loop. Co-authored-by: Luis Malheiro <luismalheiro@gmail.com> |
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| Cargo.toml | ||
| lib.rs | ||
| README.md | ||
deno_ops
proc_macro for generating highly optimized V8 functions from Deno ops.
// Declare an op.
#[op]
pub fn op_add(_: &mut OpState, a: i32, b: i32) -> Result<i32, AnyError> {
Ok(a + b)
}
// Register with an extension.
Extension::builder()
.ops(vec![op_add::decl()])
.build();