1 files changed, 5 insertions, 0 deletions
diff --git a/compiler/rustc_query_system/src/query/mod.rs b/compiler/rustc_query_system/src/query/mod.rs
index ef21af7dafb..855769dacc3 100644
--- a/compiler/rustc_query_system/src/query/mod.rs
+++ b/compiler/rustc_query_system/src/query/mod.rs
@@ -16,6 +16,7 @@ mod caches;
 pub use self::caches::{DefIdCache, DefaultCache, QueryCache, SingleCache, VecCache};
 
 mod config;
+use rustc_data_structures::jobserver::Proxy;
 use rustc_data_structures::sync::{DynSend, DynSync};
 use rustc_errors::DiagInner;
 use rustc_hashes::Hash64;
@@ -151,6 +152,10 @@ pub enum QuerySideEffect {
 pub trait QueryContext: HasDepContext {
     type QueryInfo: Clone;
 
+    /// Gets a jobserver reference which is used to release then acquire
+    /// a token while waiting on a query.
+    fn jobserver_proxy(&self) -> &Proxy;
+
     fn next_job_id(self) -> QueryJobId;
 
     /// Get the query information from the TLS context.