refactor(ext/http): Use const thread-local initializer for slightly better perf (#19881)

Benchmarking shows numbers are pretty close, however this is recommended
for the best possible thread-local performance and may improve in future
Rust compiler revisions.

1 files changed, 5 insertions, 0 deletions

diff --git a/ext/http/http_next.rs b/ext/http/http_next.rs
index e95839005..5635fbd4b 100644
--- a/ext/http/http_next.rs
+++ b/ext/http/http_next.rs
@@ -12,6 +12,7 @@ use crate::response_body::ResponseBytesInner;
 use crate::response_body::V8StreamHttpResponseBody;
 use crate::slab::slab_drop;
 use crate::slab::slab_get;
+use crate::slab::slab_init;
 use crate::slab::slab_insert;
 use crate::slab::SlabId;
 use crate::websocket_upgrade::WebSocketUpgrade;
@@ -836,6 +837,8 @@ pub fn op_http_serve<HTTP>(
 where
   HTTP: HttpPropertyExtractor,
 {
+  slab_init();
+
   let listener =
     HTTP::get_listener_for_rid(&mut state.borrow_mut(), listener_rid)?;
 
@@ -886,6 +889,8 @@ pub fn op_http_serve_on<HTTP>(
 where
   HTTP: HttpPropertyExtractor,
 {
+  slab_init();
+
   let connection =
     HTTP::get_connection_for_rid(&mut state.borrow_mut(), connection_rid)?;