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get rids of the horrendous spinlock in favor of synchronoise

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Tamo 2022-09-14 13:10:53 +02:00 committed by Clément Renault
parent 7b6673dc1d
commit 366a344474
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3 changed files with 12 additions and 5 deletions
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1
Cargo.lock generated
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@ -1791,6 +1791,7 @@ dependencies = [
"nelson", "nelson",
"roaring 0.9.0", "roaring 0.9.0",
"serde", "serde",
"synchronoise",
"tempfile", "tempfile",
"thiserror", "thiserror",
"time", "time",

1
index-scheduler/Cargo.toml
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@ -19,6 +19,7 @@ tempfile = "3.3.0"
thiserror = "1.0.30" thiserror = "1.0.30"
time = { version = "0.3.7", features = ["serde-well-known", "formatting", "parsing", "macros"] } time = { version = "0.3.7", features = ["serde-well-known", "formatting", "parsing", "macros"] }
uuid = { version = "1.1.2", features = ["serde", "v4"] } uuid = { version = "1.1.2", features = ["serde", "v4"] }
synchronoise = "1.0.1"
[dev-dependencies] [dev-dependencies]
nelson = { git = "https://github.com/meilisearch/nelson.git", rev = "675f13885548fb415ead8fbb447e9e6d9314000a"} nelson = { git = "https://github.com/meilisearch/nelson.git", rev = "675f13885548fb415ead8fbb447e9e6d9314000a"}

15
index-scheduler/src/lib.rs
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@ -10,6 +10,7 @@ pub use error::Error;
use file_store::FileStore; use file_store::FileStore;
use index::Index; use index::Index;
use index_mapper::IndexMapper; use index_mapper::IndexMapper;
use synchronoise::SignalEvent;
pub use task::Task; pub use task::Task;
use task::{Kind, KindWithContent, Status}; use task::{Kind, KindWithContent, Status};
use time::OffsetDateTime; use time::OffsetDateTime;
@ -73,10 +74,16 @@ pub struct IndexScheduler {
index_mapper: IndexMapper, index_mapper: IndexMapper,
// set to true when there is work to do. // set to true when there is work to do.
wake_up: Arc<AtomicBool>, wake_up: Arc<SignalEvent>,
} }
impl IndexScheduler { impl IndexScheduler {
pub fn new() -> Self {
// we want to start the loop right away in case meilisearch was ctrl+Ced while processing things
let wake_up = SignalEvent::auto(true);
todo!()
}
/// Return the index corresponding to the name. If it wasn't opened before /// Return the index corresponding to the name. If it wasn't opened before
/// it'll be opened. But if it doesn't exist on disk it'll throw an /// it'll be opened. But if it doesn't exist on disk it'll throw an
/// `IndexNotFound` error. /// `IndexNotFound` error.
@ -166,8 +173,7 @@ impl IndexScheduler {
/// This worker function must be run in a different thread and must be run only once. /// This worker function must be run in a different thread and must be run only once.
fn run(&self) { fn run(&self) {
loop { loop {
// TODO: TAMO: remove this horrible spinlock in favor of a sleep / channel / we’ll see self.wake_up.wait();
while !self.wake_up.swap(false, Ordering::Relaxed) {}
let mut wtxn = match self.env.write_txn() { let mut wtxn = match self.env.write_txn() {
Ok(wtxn) => wtxn, Ok(wtxn) => wtxn,
@ -370,7 +376,6 @@ impl IndexScheduler {
/// Notify the scheduler there is or may be work to do. /// Notify the scheduler there is or may be work to do.
pub fn notify(&self) { pub fn notify(&self) {
self.wake_up self.wake_up.signal()
.store(true, std::sync::atomic::Ordering::Relaxed);
} }
} }