From 03c1b0009c4b53eccc568ed939bfe1ef654a156f Mon Sep 17 00:00:00 2001
From: Dima Gerasimov <karlicoss@gmail.com>
Date: Mon, 26 Nov 2018 02:29:56 +0000
Subject: [PATCH] Fix 'Too many open files' error.

Happened before after continuous archiving of few hundreds links.

Fix by:
* setting process object to `None` to trigger GC finalizer cleanup of pipe descriptors
* protecting against double cleanup
---
 archiver/util.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/archiver/util.py b/archiver/util.py
index 14f8ccff..e4c7dbe3 100644
--- a/archiver/util.py
+++ b/archiver/util.py
@@ -161,7 +161,13 @@ def progress(seconds=TIMEOUT, prefix=''):
 
     def end():
         """immediately finish progress and clear the progressbar line"""
+        nonlocal p
+        if p is None: # protect from double termination
+            return
+
         p.terminate()
+        p = None
+
         sys.stdout.write('\r{}{}\r'.format((' ' * TERM_WIDTH), ANSI['reset']))  # clear whole terminal line
         sys.stdout.flush()