refactor(core): Allow multiple overflown responses in single poll (#9433)

This commit rewrites "JsRuntime::poll" function to fix a corner case that
might caused "overflown_response" to be overwritten by other overflown response.

The logic has been changed to allow returning multiple overflown response
alongside responses from shared queue.

1 files changed, 5 insertions, 6 deletions

diff --git a/core/core.js b/core/core.js
index a96ce81d7..bda6739a2 100644
--- a/core/core.js
+++ b/core/core.js
@@ -155,12 +155,7 @@ SharedQueue Binary Layout
     asyncHandlers[opId] = cb;
   }
 
-  function handleAsyncMsgFromRust(opId, buf) {
-    if (buf) {
-      // This is the overflow_response case of deno::JsRuntime::poll().
-      asyncHandlers[opId](buf);
-      return;
-    }
+  function handleAsyncMsgFromRust() {
     while (true) {
       const opIdBuf = shift();
       if (opIdBuf == null) {
@@ -169,6 +164,10 @@ SharedQueue Binary Layout
       assert(asyncHandlers[opIdBuf[0]] != null);
       asyncHandlers[opIdBuf[0]](opIdBuf[1]);
     }
+
+    for (let i = 0; i < arguments.length; i += 2) {
+      asyncHandlers[arguments[i]](arguments[i + 1]);
+    }
   }
 
   function dispatch(opName, control, ...zeroCopy) {