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Disk cache: apply the free-space reading where it's taken, evict off the UI thread at open (#2551)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
arnav-hiwarkar
2026-10-28 22:45:48 +05:30
co-authored by Claude Opus 5.5
parent 74ea0be88f
commit 8ab492d8cd
3 changed files with 31 additions and 8 deletions
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crates/render/src/disk_cache.rs
+12 -1
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@@ -320,10 +320,12 @@ impl DiskCache {
dropped: AtomicU64::new(0),
failed: AtomicU64::new(0),
tmp_counter: AtomicU64::new(0),
queue: Arc::new((Mutex::new(Queue { jobs: Default::default(), busy: false }), Condvar::new())),
queue: Arc::new((Mutex::new(Queue { jobs: Default::default(), busy: cfg!(not(target_arch = "wasm32")) }), Condvar::new())),
min_layer_ms: AtomicU64::new(30),
});
dc.rescan();
// Shrinking a large cache deletes many files: the writer thread does it.
#[cfg(target_arch = "wasm32")]
dc.evict();
#[cfg(not(target_arch = "wasm32"))]
{
@@ -644,6 +646,15 @@ impl DiskCache {
#[cfg(not(target_arch = "wasm32"))]
fn writer(dc: std::sync::Weak<DiskCache>, q: Arc<(Mutex<Queue>, Condvar)>) {
let (m, cv) = &*q;
// The eviction at open (a lower limit than the folder holds), off the opening thread;
// `busy` starts set, so `flush` waits for it.
if let Some(cache) = dc.upgrade() {
cache.evict();
}
if let Ok(mut g) = m.lock() {
g.busy = false;
}
cv.notify_all();
loop {
let job = {
let Ok(mut g) = m.lock() else { return };