Merge pull request #14180 from oberblastmeister/lsp_exit_perf

fix slow closing of lsp clients when exiting vim

runtime/lua/vim/lsp.lua

@@ -1179,11 +1179,38 @@ function lsp._vim_exit_handler()
     client.stop()
   end
 
-  if not vim.wait(500, function() return tbl_isempty(active_clients) end, 50) then
+  local function wait_async(timeout, ms, predicate, cb)
+    local timer = uv.new_timer()
+    local time = 0
+
+    local function done(in_time)
+      timer:stop()
+      timer:close()
+      cb(in_time)
+    end
+
+    timer:start(0, ms, function()
+      if predicate() == true then
+        done(true)
+        return
+      end
+
+      if time == timeout then
+        done(false)
+        return
+      end
+
+      time = time + ms
+    end)
+  end
+
+  wait_async(500, 50, function() return tbl_isempty(active_clients) end, function(in_time)
+    if not in_time then
       for _, client in pairs(active_clients) do
         client.stop(true)
       end
     end
+  end)
 end
 
 nvim_command("autocmd VimLeavePre * lua vim.lsp._vim_exit_handler()")