Revert "Refactor dispatch handling (#2452)"

Due to performance regression:
https://github.com/denoland/deno/commit/dc60fe9f300043f191286ef804a365e16e455f87#commitcomment-33943711

This reverts commit dc60fe9f300043f191286ef804a365e16e455f87.

1 files changed, 2 insertions, 15 deletions

diff --git a/core/shared_queue.js b/core/shared_queue.js
index b413f011e..75f370ce4 100644
--- a/core/shared_queue.js
+++ b/core/shared_queue.js
@@ -151,27 +151,14 @@ SharedQueue Binary Layout
 
   function handleAsyncMsgFromRust(buf) {
     if (buf) {
-      handleAsyncMsgFromRustInner(buf);
+      asyncHandler(buf);
     } else {
       while ((buf = shift()) != null) {
-        handleAsyncMsgFromRustInner(buf);
+        asyncHandler(buf);
       }
     }
   }
 
-  function handleAsyncMsgFromRustInner(buf) {
-    // DataView to extract cmdId value.
-    const dataView = new DataView(buf.buffer, buf.byteOffset, 4);
-    const promiseId = dataView.getInt32(0);
-    // Uint8 buffer view shifted right and shortened 4 bytes to remove cmdId from view window.
-    const bufViewFinal = new Uint8Array(
-      buf.buffer,
-      buf.byteOffset + 4,
-      buf.byteLength - 4
-    );
-    asyncHandler(promiseId, bufViewFinal);
-  }
-
   function dispatch(control, zeroCopy = null) {
     maybeInit();
     // First try to push control to shared.