[gnome-music/wip/mschraal/asyncqueue-rework: 4/4] asyncqueue: Start as much tasks as allowed

[Marinus Schraal <mschraal src gnome org>]

commit 93183b7ad96e2343844a2b592e3a1ce2dbe6b77f
Author: Marinus Schraal <mschraal gnome org>
Date:   Sun Sep 26 12:03:29 2021 +0200

    asyncqueue: Start as much tasks as allowed
    
    Previously dispatch would add one task per call even if more allowed
    async slots were available.
    
    Fill out the available active pool slots instead.

 gnomemusic/asyncqueue.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/gnomemusic/asyncqueue.py b/gnomemusic/asyncqueue.py
index 7d8ca47dd..2b13c041d 100644
--- a/gnomemusic/asyncqueue.py
+++ b/gnomemusic/asyncqueue.py
@@ -82,10 +82,11 @@ class AsyncQueue(GObject.GObject):
     def _dispatch(self) -> bool:
         tick = time.time()
 
-        if len(self._async_pool) == 0:
-            self._timeout_id = 0
-            return GLib.SOURCE_REMOVE
-        elif len(self._async_active_pool) < self._max_async:
+        while len(self._async_active_pool) < self._max_async:
+            if len(self._async_pool) == 0:
+                self._timeout_id = 0
+                return GLib.SOURCE_REMOVE
+
             async_obj_id = list(self._async_pool.keys())[0]
             async_task_args = self._async_pool.pop(async_obj_id)
             async_obj = async_task_args[0]