From 5f5f9232c1ce63235c6c2a5aa80c3b8b1ec761be Mon Sep 17 00:00:00 2001
From: glubsy <glubsy@users.noreply.github.com>
Date: Tue, 28 Jul 2020 16:44:06 +0200
Subject: [PATCH] Properly wait for multiprocesses to exit

* Fix for #693
---
 core/pe/matchblock.py | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/core/pe/matchblock.py b/core/pe/matchblock.py
index 6f2a0a27..953d39ab 100644
--- a/core/pe/matchblock.py
+++ b/core/pe/matchblock.py
@@ -9,7 +9,6 @@
 import logging
 import multiprocessing
 from itertools import combinations
-from time import sleep
 
 from hscommon.util import extract, iterconsume
 from hscommon.trans import tr
@@ -255,9 +254,7 @@ def getmatches(pictures, cache_path, threshold, match_scaled=False, j=job.nulljo
             ref.dimensions  # pre-read dimensions for display in results
             other.dimensions
             result.append(get_match(ref, other, percentage))
-    # HACK this is a workaround for when the progress bar gets stuck sometimes,
-    # as we enter a deadlock somewhere and the sub-processes become zombies.
-    sleep(1)
+    pool.join()
     return result