Merge pull request #739 from truemedian/prevent-bad-uv-run

fix: prevent calling uv.run while already running.
luvit · Nov 21, 2024 · 3ff02c8 · 3ff02c8
2 parents 117adf7 + 1ddd3fb
commit 3ff02c8
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/loop.c b/src/loop.c
@@ -32,6 +32,11 @@ static const char *const luv_runmodes[] = {
 static int luv_run(lua_State* L) {
   int mode = luaL_checkoption(L, 1, "default", luv_runmodes);
   luv_ctx_t* ctx = luv_context(L);
+  if (ctx->mode != -1) {
+    lua_pushnil(L);
+    lua_pushstring(L, "loop already running");
+    return 2;
+  }
   ctx->mode = mode;
   int ret = uv_run(ctx->loop, (uv_run_mode)mode);
   ctx->mode = -1;