From d7977c25a83fd2b5713c6bb1a8214ef5023f1469 Mon Sep 17 00:00:00 2001
From: Pekka Enberg <penberg@iki.fi>
Date: Wed, 17 Sep 2025 11:46:14 +0300
Subject: [PATCH] core/vtab: Mark VTabModuleImpl as Send and Sync

---
 core/vtab.rs                 | 4 ++--
 extensions/core/src/vtabs.rs | 5 +++++
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/core/vtab.rs b/core/vtab.rs
index bc3da6d9a..c19bdc15b 100644
--- a/core/vtab.rs
+++ b/core/vtab.rs
@@ -412,7 +412,7 @@ impl Drop for ExtVirtualTableCursor {
     }
 }
 
-pub trait InternalVirtualTable: std::fmt::Debug {
+pub trait InternalVirtualTable: std::fmt::Debug + Send + Sync {
     fn name(&self) -> String;
     fn open(
         &self,
@@ -427,7 +427,7 @@ pub trait InternalVirtualTable: std::fmt::Debug {
     fn sql(&self) -> String;
 }
 
-pub trait InternalVirtualTableCursor {
+pub trait InternalVirtualTableCursor: Send + Sync {
     /// next returns `Ok(true)` if there are more rows, and `Ok(false)` otherwise.
     fn next(&mut self) -> Result<bool, LimboError>;
     fn rowid(&self) -> i64;
diff --git a/extensions/core/src/vtabs.rs b/extensions/core/src/vtabs.rs
index 5db7137a0..449b26269 100644
--- a/extensions/core/src/vtabs.rs
+++ b/extensions/core/src/vtabs.rs
@@ -30,6 +30,11 @@ pub struct VTabModuleImpl {
     pub best_idx: BestIdxFn,
 }
 
+// SAFETY: VTabModuleImpl contains function pointers and a name pointer that are
+// immutable after creation and, therefore, safe to share between threads.
+unsafe impl Send for VTabModuleImpl {}
+unsafe impl Sync for VTabModuleImpl {}
+
 #[repr(C)]
 pub struct VTabCreateResult {
     pub code: ResultCode,