This is the way

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Filip Tibell 2024-01-17 19:58:27 +01:00
parent feaeca4b97
commit ff812a5a77
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5 changed files with 585 additions and 17 deletions

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Cargo.lock generated
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checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
[[package]]
name = "windows_x86_64_gnullvm"
version = "0.52.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1a657e1e9d3f514745a572a6846d3c7aa7dbe1658c056ed9c3344c4109a6949e"
[[package]]
name = "windows_x86_64_msvc"
version = "0.48.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
[[package]]
name = "windows_x86_64_msvc"
version = "0.52.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dff9641d1cd4be8d1a070daf9e3773c5f67e78b4d9d42263020c057706765c04"

View file

@ -7,6 +7,8 @@ edition = "2021"
anyhow = "1.0"
dashmap = "5.5"
gxhash = "2.3"
self_cell = "1.0"
smol = "2.0"
tokio = { version = "1.0", features = ["full"] }
mlua = { version = "0.9", features = ["luau", "luau-jit"] }
mlua = { version = "0.9", features = ["luau", "luau-jit", "async"] }

View file

@ -1,5 +1,7 @@
mod tokio;
mod smol;
// mod tokio;
fn main() {
tokio::main();
let _ = smol::main();
// let _ = tokio::main();
}

73
src/smol/executor.rs Normal file
View file

@ -0,0 +1,73 @@
use std::{rc::Rc, sync::Arc};
use mlua::prelude::*;
use smol::*;
struct LuaSmol<'ex> {
lua_exec: Rc<LocalExecutor<'ex>>,
main_exec: Arc<Executor<'ex>>,
}
// HACK: self_cell is not actually used to make a self-referential struct here,
// it is instead used to guarantee the lifetime of the executors. It does not
// need to refer to Lua during construction at all but the end result is the
// same and we let the self_cell crate handle all the unsafe code for us.
self_cell::self_cell!(
struct LuaExecutorInner {
owner: Rc<Lua>,
#[not_covariant]
dependent: LuaSmol,
}
);
impl LuaExecutorInner {
fn create(lua: Rc<Lua>) -> Self {
LuaExecutorInner::new(lua, |_| {
let lua_exec = Rc::new(LocalExecutor::new());
let main_exec = Arc::new(Executor::new());
LuaSmol {
lua_exec,
main_exec,
}
})
}
}
pub struct LuaExecutor {
_lua: Rc<Lua>,
inner: LuaExecutorInner,
}
impl LuaExecutor {
pub fn new(lua: Rc<Lua>) -> Self {
Self {
_lua: Rc::clone(&lua),
inner: LuaExecutorInner::create(lua),
}
}
pub fn run<'outer_fn, F>(&'outer_fn self, futures_spawner: F) -> LuaResult<()>
where
F: for<'lua> FnOnce(
&'lua Lua,
&'outer_fn LocalExecutor<'lua>,
&'outer_fn Executor<'lua>,
) -> LuaResult<()>,
{
self.inner.with_dependent(|lua, rt_executors| {
// 1. Spawn futures using the provided function
let lua_exec = &rt_executors.lua_exec;
let main_exec = &rt_executors.main_exec;
futures_spawner(lua, lua_exec, main_exec)?;
// 2. Run them all until lua executor completes
block_on(main_exec.run(async {
while !lua_exec.is_empty() {
lua_exec.tick().await;
}
}));
// 3. Yay!
Ok(())
})
}
}

58
src/smol/mod.rs Normal file
View file

@ -0,0 +1,58 @@
use std::{
rc::Rc,
time::{Duration, Instant},
};
use mlua::prelude::*;
use smol::*;
const NUM_TEST_BATCHES: usize = 20;
const NUM_TEST_THREADS: usize = 50_000;
const MAIN_CHUNK: &str = r#"
wait(0.01 * math.random())
"#;
mod executor;
use executor::*;
pub fn main() -> LuaResult<()> {
let lua = Rc::new(Lua::new());
let rt = LuaExecutor::new(Rc::clone(&lua));
lua.globals().set(
"wait",
lua.create_async_function(|_, duration: f64| async move {
let before = Instant::now();
let after = Timer::after(Duration::from_secs_f64(duration)).await;
Ok((after - before).as_secs_f64())
})?,
)?;
let start = Instant::now();
let main_fn = lua.load(MAIN_CHUNK).into_function()?;
for _ in 0..NUM_TEST_BATCHES {
rt.run(|lua, lua_exec, _| {
// TODO: Figure out how to create a scheduler queue that we can
// append threads to, both front and back, and resume them in order
for _ in 0..NUM_TEST_THREADS {
let thread = lua.create_thread(main_fn.clone())?;
let task = lua_exec.spawn(async move {
if let Err(err) = thread.into_async::<_, ()>(()).await {
println!("error: {}", err);
}
Ok::<_, LuaError>(())
});
task.detach();
}
Ok(())
})?;
}
println!("elapsed: {:?}", start.elapsed());
Ok(())
}