1 files changed, 13 insertions, 1 deletions
diff --git a/ext/http/slab.rs b/ext/http/slab.rs
index 9f7c1f3e9..dbe1a6635 100644
--- a/ext/http/slab.rs
+++ b/ext/http/slab.rs
@@ -32,7 +32,7 @@ pub struct HttpSlabRecord {
 }
 
 thread_local! {
-  static SLAB: RefCell<Slab<HttpSlabRecord>> = RefCell::new(Slab::with_capacity(1024));
+  static SLAB: RefCell<Slab<HttpSlabRecord>> = const { RefCell::new(Slab::new()) };
 }
 
 macro_rules! http_trace {
@@ -56,6 +56,18 @@ pub struct SlabEntry(
   RefMut<'static, Slab<HttpSlabRecord>>,
 );
 
+const SLAB_CAPACITY: usize = 1024;
+
+pub fn slab_init() {
+  SLAB.with(|slab: &RefCell<Slab<HttpSlabRecord>>| {
+    // Note that there might already be an active HTTP server, so this may just
+    // end up adding room for an additional SLAB_CAPACITY items. All HTTP servers
+    // on a single thread share the same slab.
+    let mut slab = slab.borrow_mut();
+    slab.reserve(SLAB_CAPACITY);
+  })
+}
+
 pub fn slab_get(index: SlabId) -> SlabEntry {
   http_trace!(index, "slab_get");
   let mut lock: RefMut<'static, Slab<HttpSlabRecord>> = SLAB.with(|x| {