serialqueue: Kick the background thread from serialqueue_exit

Wake the background thread up when exiting - as this makes the exit
complete faster (and have more predictable timing).

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 10 insertions, 9 deletions

diff --git a/klippy/serialqueue.c b/klippy/serialqueue.c
index 444c5ea4..23ed6858 100644
--- a/klippy/serialqueue.c
+++ b/klippy/serialqueue.c
@@ -448,6 +448,15 @@ check_wake_receive(struct serialqueue *sq)
     }
 }
 
+// Write to the internal pipe to wake the background thread if in poll
+static void
+kick_bg_thread(struct serialqueue *sq)
+{
+    int ret = write(sq->pipe_fds[1], ".", 1);
+    if (ret < 0)
+        report_errno("pipe write", ret);
+}
+
 // Update internal state when the receive sequence increases
 static void
 update_receive_seq(struct serialqueue *sq, double eventtime, uint64_t rseq)
@@ -832,6 +841,7 @@ void
 serialqueue_exit(struct serialqueue *sq)
 {
     pollreactor_do_exit(&sq->pr);
+    kick_bg_thread(sq);
     int ret = pthread_join(sq->tid, NULL);
     if (ret)
         report_errno("pthread_join", ret);
@@ -848,15 +858,6 @@ serialqueue_alloc_commandqueue(void)
     return cq;
 }
 
-// Write to the internal pipe to wake the background thread if in poll
-static void
-kick_bg_thread(struct serialqueue *sq)
-{
-    int ret = write(sq->pipe_fds[1], ".", 1);
-    if (ret < 0)
-        report_errno("pipe write", ret);
-}
-
 // Add a batch of messages to the given command_queue
 void
 serialqueue_send_batch(struct serialqueue *sq, struct command_queue *cq