From 0c28b6a11afde43ec20da59521423714123aca72 Mon Sep 17 00:00:00 2001
From: Marshall Bowers <elliott.codes@gmail.com>
Date: Mon, 17 Jun 2024 11:52:05 -0400
Subject: [PATCH] rustdoc: Don't start indexing if a crate is already being
 indexed (#13149)

This PR updates the rustdoc indexing to not start indexing a crate that
is already being indexed.

Currently the indexing of a crate might get continuously interrupted by
the user's typing, resulting in thrashing of the indexing task and never
indexing the crate in its entirety.

Release Notes:

- N/A
---
 crates/rustdoc/src/store.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/crates/rustdoc/src/store.rs b/crates/rustdoc/src/store.rs
index 50ebf83510f3db4880180776a7e1462eff3acfd1..56859144ff6f2b9114476ee454f73d04708d0027 100644
--- a/crates/rustdoc/src/store.rs
+++ b/crates/rustdoc/src/store.rs
@@ -89,6 +89,10 @@ impl RustdocStore {
         crate_name: CrateName,
         provider: Box<dyn RustdocProvider + Send + Sync + 'static>,
     ) -> Shared<Task<Result<(), Arc<anyhow::Error>>>> {
+        if let Some(existing_task) = self.indexing_tasks_by_crate.read().get(&crate_name) {
+            return existing_task.clone();
+        }
+
         let indexing_task = self
             .executor
             .spawn({