eval: Fix jobwait() to process multiple jobs concurrently

The new event processing architecture changed `jobwait()` semantics: Only one
job is processed at time since process_wait only focuses on one queue.

This fixes the problem with a few changes:

- Allow the event queue polled by `process_wait` to be overriden by a new
  argument.
- Allow the parent queue to be overriden with `queue_replace_parent`
- Create a temporary queue that serves as the parent for all jobs passed to
  `jobwait()`

1 files changed, 2 insertions, 2 deletions

diff --git a/src/nvim/event/loop.c b/src/nvim/event/loop.c
index 1a50ec0d9a..3d3288f858 100644
--- a/src/nvim/event/loop.c
+++ b/src/nvim/event/loop.c
@@ -22,7 +22,7 @@ void loop_init(Loop *loop, void *data)
   loop->uv.data = loop;
   loop->children = kl_init(WatcherPtr);
   loop->children_stop_requests = 0;
-  loop->events = queue_new_parent(on_put, loop);
+  loop->events = queue_new_parent(loop_on_put, loop);
   loop->fast_events = queue_new_child(loop->events);
   uv_signal_init(&loop->uv, &loop->children_watcher);
   uv_timer_init(&loop->uv, &loop->children_kill_timer);
@@ -59,7 +59,7 @@ void loop_poll_events(Loop *loop, int ms)
   queue_process_events(loop->fast_events);
 }
 
-static void on_put(Queue *queue, void *data)
+void loop_on_put(Queue *queue, void *data)
 {
   Loop *loop = data;
   // Sometimes libuv will run pending callbacks(timer for example) before