88 lines
2.8 KiB
Rust
88 lines
2.8 KiB
Rust
use crate::accounts_index::{AccountsIndexConfig, IndexValue};
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use crate::bucket_map_holder::BucketMapHolder;
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use crate::in_mem_accounts_index::InMemAccountsIndex;
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use std::fmt::Debug;
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use std::{
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sync::{
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atomic::{AtomicBool, Ordering},
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Arc,
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},
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thread::{Builder, JoinHandle},
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};
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// eventually hold the bucket map
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// Also manages the lifetime of the background processing threads.
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// When this instance is dropped, it will drop the bucket map and cleanup
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// and it will stop all the background threads and join them.
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pub struct AccountsIndexStorage<T: IndexValue> {
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// for managing the bg threads
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exit: Arc<AtomicBool>,
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handles: Option<Vec<JoinHandle<()>>>,
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// eventually the backing storage
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pub storage: Arc<BucketMapHolder<T>>,
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pub in_mem: Vec<Arc<InMemAccountsIndex<T>>>,
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}
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impl<T: IndexValue> Debug for AccountsIndexStorage<T> {
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fn fmt(&self, _f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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Ok(())
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}
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}
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impl<T: IndexValue> Drop for AccountsIndexStorage<T> {
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fn drop(&mut self) {
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self.exit.store(true, Ordering::Relaxed);
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self.storage.wait_dirty_or_aged.notify_all();
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if let Some(handles) = self.handles.take() {
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handles
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.into_iter()
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.for_each(|handle| handle.join().unwrap());
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}
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}
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}
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impl<T: IndexValue> AccountsIndexStorage<T> {
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pub fn new(bins: usize, config: &Option<AccountsIndexConfig>) -> AccountsIndexStorage<T> {
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let num_threads = std::cmp::max(2, num_cpus::get() / 4);
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let threads = config
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.as_ref()
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.and_then(|config| config.flush_threads)
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.unwrap_or(num_threads);
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let storage = Arc::new(BucketMapHolder::new(bins, config, threads));
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let in_mem = (0..bins)
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.into_iter()
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.map(|bin| Arc::new(InMemAccountsIndex::new(&storage, bin)))
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.collect::<Vec<_>>();
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let exit = Arc::new(AtomicBool::default());
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let handles = Some(
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(0..threads)
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.into_iter()
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.map(|_| {
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let storage_ = Arc::clone(&storage);
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let exit_ = Arc::clone(&exit);
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let in_mem_ = in_mem.clone();
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// note that rayon use here causes us to exhaust # rayon threads and many tests running in parallel deadlock
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Builder::new()
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.name("solana-idx-flusher".to_string())
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.spawn(move || {
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storage_.background(exit_, in_mem_);
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})
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.unwrap()
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})
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.collect(),
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);
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Self {
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exit,
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handles,
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storage,
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in_mem,
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}
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}
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}
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