mirror of
https://github.com/denoland/deno
synced 2024-10-13 11:32:29 +00:00
161cf7cdfd
This change simplifies how we execute V8. Previously V8 Isolates jumped around threads every time they were woken up. This was overly complex and potentially hurting performance in a myriad ways. Now isolates run on their own dedicated thread and never move. - blocking_json spawns a thread and does not use a thread pool - op_host_poll_worker and op_host_resume_worker are non-operational - removes Worker::get_message and Worker::post_message - ThreadSafeState::workers table contains WorkerChannel entries instead of actual Worker instances. - MainWorker and CompilerWorker are no longer Futures. - The multi-threaded version of deno_core_http_bench was removed. - AyncOps no longer need to be Send + Sync This PR is very large and several tests were disabled to speed integration: - installer_test_local_module_run - installer_test_remote_module_run - _015_duplicate_parallel_import - _026_workers
147 lines
3.4 KiB
Rust
147 lines
3.4 KiB
Rust
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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use super::dispatch_json::{JsonOp, Value};
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use crate::ops::json_op;
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use crate::state::ThreadSafeState;
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use deno_core::*;
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#[cfg(unix)]
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use super::dispatch_json::Deserialize;
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#[cfg(unix)]
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use crate::deno_error::bad_resource;
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#[cfg(unix)]
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use deno_core::Resource;
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#[cfg(unix)]
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use futures::future::{poll_fn, FutureExt};
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#[cfg(unix)]
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use serde_json;
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#[cfg(unix)]
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use std::task::Waker;
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#[cfg(unix)]
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use tokio::signal::unix::{signal, Signal, SignalKind};
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pub fn init(i: &mut Isolate, s: &ThreadSafeState) {
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i.register_op(
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"signal_bind",
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s.core_op(json_op(s.stateful_op(op_signal_bind))),
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);
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i.register_op(
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"signal_unbind",
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s.core_op(json_op(s.stateful_op(op_signal_unbind))),
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);
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i.register_op(
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"signal_poll",
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s.core_op(json_op(s.stateful_op(op_signal_poll))),
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);
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}
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#[cfg(unix)]
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/// The resource for signal stream.
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/// The second element is the waker of polling future.
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pub struct SignalStreamResource(pub Signal, pub Option<Waker>);
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#[cfg(unix)]
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impl Resource for SignalStreamResource {}
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#[cfg(unix)]
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#[derive(Deserialize)]
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struct BindSignalArgs {
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signo: i32,
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}
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#[cfg(unix)]
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#[derive(Deserialize)]
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struct SignalArgs {
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rid: i32,
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}
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#[cfg(unix)]
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fn op_signal_bind(
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state: &ThreadSafeState,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, ErrBox> {
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let args: BindSignalArgs = serde_json::from_value(args)?;
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let mut table = state.lock_resource_table();
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let rid = table.add(
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"signal",
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Box::new(SignalStreamResource(
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signal(SignalKind::from_raw(args.signo)).expect(""),
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None,
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)),
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);
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Ok(JsonOp::Sync(json!({
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"rid": rid,
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})))
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}
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#[cfg(unix)]
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fn op_signal_poll(
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state: &ThreadSafeState,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, ErrBox> {
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let args: SignalArgs = serde_json::from_value(args)?;
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let rid = args.rid as u32;
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let state_ = state.clone();
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let future = poll_fn(move |cx| {
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let mut table = state_.lock_resource_table();
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if let Some(mut signal) = table.get_mut::<SignalStreamResource>(rid) {
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signal.1 = Some(cx.waker().clone());
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return signal.0.poll_recv(cx);
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}
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std::task::Poll::Ready(None)
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})
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.then(|result| async move { Ok(json!({ "done": result.is_none() })) });
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Ok(JsonOp::AsyncUnref(future.boxed_local()))
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}
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#[cfg(unix)]
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pub fn op_signal_unbind(
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state: &ThreadSafeState,
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args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, ErrBox> {
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let args: SignalArgs = serde_json::from_value(args)?;
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let rid = args.rid as u32;
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let mut table = state.lock_resource_table();
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let resource = table.get::<SignalStreamResource>(rid);
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if let Some(signal) = resource {
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if let Some(waker) = &signal.1 {
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// Wakes up the pending poll if exists.
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// This prevents the poll future from getting stuck forever.
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waker.clone().wake();
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}
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}
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table.close(rid).ok_or_else(bad_resource)?;
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Ok(JsonOp::Sync(json!({})))
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}
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#[cfg(not(unix))]
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pub fn op_signal_bind(
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_state: &ThreadSafeState,
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_args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, ErrBox> {
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unimplemented!();
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}
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#[cfg(not(unix))]
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fn op_signal_unbind(
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_state: &ThreadSafeState,
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_args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, ErrBox> {
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unimplemented!();
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}
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#[cfg(not(unix))]
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fn op_signal_poll(
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_state: &ThreadSafeState,
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_args: Value,
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_zero_copy: Option<ZeroCopyBuf>,
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) -> Result<JsonOp, ErrBox> {
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unimplemented!();
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}
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