From b3d7df55357ea6fc6f5141b64a9638ddb39b0f63 Mon Sep 17 00:00:00 2001
From: Igor Zinkovsky <igor@deno.com>
Date: Wed, 17 Apr 2024 07:19:55 -0700
Subject: perf: v8 code cache (#23081)
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This PR enables V8 code cache for ES modules and for `require` scripts
through `op_eval_context`. Code cache artifacts are transparently stored
and fetched using sqlite db and are passed to V8. `--no-code-cache` can
be used to disable.

---------

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
---
 runtime/code_cache.rs | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 runtime/code_cache.rs

(limited to 'runtime/code_cache.rs')

diff --git a/runtime/code_cache.rs b/runtime/code_cache.rs
new file mode 100644
index 000000000..ccc070365
--- /dev/null
+++ b/runtime/code_cache.rs
@@ -0,0 +1,31 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+
+pub enum CodeCacheType {
+  EsModule,
+  Script,
+}
+
+impl CodeCacheType {
+  pub fn as_str(&self) -> &str {
+    match self {
+      Self::EsModule => "esmodule",
+      Self::Script => "script",
+    }
+  }
+}
+
+pub trait CodeCache: Send + Sync {
+  fn get_sync(
+    &self,
+    specifier: &str,
+    code_cache_type: CodeCacheType,
+    source_hash: &str,
+  ) -> Option<Vec<u8>>;
+  fn set_sync(
+    &self,
+    specifier: &str,
+    code_cache_type: CodeCacheType,
+    source_hash: &str,
+    data: &[u8],
+  );
+}
-- 
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